From: Kevin O'Connor Date: Sat, 31 Dec 2011 08:30:40 +0000 (-0500) Subject: vgabios: Rename vga.c to vgabios.c. X-Git-Url: http://wien.tomnetworks.com/gitweb/?p=seabios.git;a=commitdiff_plain;h=e1e000b177427bde534ac7e6ca885c2226bb60d6 vgabios: Rename vga.c to vgabios.c. Also, rename vgatables.h to vgabios.h. Signed-off-by: Kevin O'Connor --- diff --git a/Makefile b/Makefile index 3d60b88..2346ee3 100644 --- a/Makefile +++ b/Makefile @@ -169,7 +169,7 @@ $(OUT)bios.bin.elf $(OUT)bios.bin: $(OUT)rom.o tools/checkrom.py ################ VGA build rules # VGA src files -SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \ +SRCVGA=src/output.c src/util.c vgasrc/vgabios.c vgasrc/vgafb.c vgasrc/vgaio.c \ vgasrc/vgatables.c vgasrc/vgafonts.c \ vgasrc/clext.c vgasrc/bochsvga.c vgasrc/geodelx.c diff --git a/vgasrc/bochsvga.c b/vgasrc/bochsvga.c index 99d4041..9dd142b 100644 --- a/vgasrc/bochsvga.c +++ b/vgasrc/bochsvga.c @@ -1,8 +1,8 @@ -#include "vgatables.h" +#include "vgabios.h" // struct vbe_modeinfo #include "vbe.h" #include "bochsvga.h" #include "util.h" -#include "config.h" // CONFIG_ +#include "config.h" // CONFIG_* #include "biosvar.h" // SET_BDA static struct mode diff --git a/vgasrc/bochsvga.h b/vgasrc/bochsvga.h index aaa3a97..f0263d7 100644 --- a/vgasrc/bochsvga.h +++ b/vgasrc/bochsvga.h @@ -1,5 +1,5 @@ -#ifndef __DISPI_H -#define __DISPI_H +#ifndef __BOCHSVGA_H +#define __BOCHSVGA_H #include "types.h" // u8 #include "ioport.h" // outb @@ -64,4 +64,4 @@ void bochsvga_clear_scr(void); int bochsvga_hires_enabled(void); u16 bochsvga_curr_mode(void); -#endif +#endif // bochsvga.h diff --git a/vgasrc/clext.c b/vgasrc/clext.c index b2c59fb..40447ff 100644 --- a/vgasrc/clext.c +++ b/vgasrc/clext.c @@ -5,7 +5,7 @@ // // This file may be distributed under the terms of the GNU LGPLv3 license. -#include "vgatables.h" // cirrus_init +#include "vgabios.h" // cirrus_init #include "biosvar.h" // GET_GLOBAL #include "util.h" // dprintf #include "bregs.h" // struct bregs diff --git a/vgasrc/geodelx.c b/vgasrc/geodelx.c index 6c0f838..1d58be0 100644 --- a/vgasrc/geodelx.c +++ b/vgasrc/geodelx.c @@ -10,7 +10,7 @@ #include "ioport.h" // outb #include "farptr.h" // SET_FARVAR #include "biosvar.h" // GET_BDA -#include "vgatables.h" // VGAREG_* +#include "vgabios.h" // VGAREG_* #include "util.h" // memset #include "config.h" #include "types.h" diff --git a/vgasrc/vga.c b/vgasrc/vga.c deleted file mode 100644 index 9e5884b..0000000 --- a/vgasrc/vga.c +++ /dev/null @@ -1,1596 +0,0 @@ -// VGA bios implementation -// -// Copyright (C) 2009 Kevin O'Connor -// Copyright (C) 2001-2008 the LGPL VGABios developers Team -// -// This file may be distributed under the terms of the GNU LGPLv3 license. - - -// TODO: -// * review correctness of converted asm by comparing with RBIL -// -// * convert vbe/clext code - -#include "bregs.h" // struct bregs -#include "biosvar.h" // GET_BDA -#include "util.h" // memset -#include "vgatables.h" // find_vga_entry -#include "optionroms.h" // struct pci_data -#include "config.h" // CONFIG_* -#include "vbe.h" // struct vbe_info -#include "geodelx.h" // geodelx_init -#include "bochsvga.h" // bochsvga_init - -// XXX -#define DEBUG_VGA_POST 1 -#define DEBUG_VGA_10 3 - - -/**************************************************************** - * PCI Data - ****************************************************************/ -#if CONFIG_VGA_PCI == 1 -struct pci_data rom_pci_data VAR16VISIBLE = { - .signature = PCI_ROM_SIGNATURE, - .vendor = CONFIG_VGA_VID, - .device = CONFIG_VGA_DID, - .dlen = 0x18, - .class_hi = 0x300, - .irevision = 1, - .type = PCIROM_CODETYPE_X86, - .indicator = 0x80, -}; -#endif - -/**************************************************************** - * Helper functions - ****************************************************************/ - -static inline void -call16_vgaint(u32 eax, u32 ebx) -{ - asm volatile( - "int $0x10\n" - "cli\n" - "cld" - : - : "a"(eax), "b"(ebx) - : "cc", "memory"); -} - -static void -perform_gray_scale_summing(u16 start, u16 count) -{ - vgahw_screen_disable(); - int i; - for (i = start; i < start+count; i++) { - u8 rgb[3]; - vgahw_get_dac_regs(GET_SEG(SS), rgb, i, 1); - - // intensity = ( 0.3 * Red ) + ( 0.59 * Green ) + ( 0.11 * Blue ) - u16 intensity = ((77 * rgb[0] + 151 * rgb[1] + 28 * rgb[2]) + 0x80) >> 8; - if (intensity > 0x3f) - intensity = 0x3f; - - vgahw_set_dac_regs(GET_SEG(SS), rgb, i, 1); - } - vgahw_screen_enable(); -} - -static void -set_cursor_shape(u8 start, u8 end) -{ - start &= 0x3f; - end &= 0x1f; - - u16 curs = (start << 8) + end; - SET_BDA(cursor_type, curs); - - u8 modeset_ctl = GET_BDA(modeset_ctl); - u16 cheight = GET_BDA(char_height); - if ((modeset_ctl & 0x01) && (cheight > 8) && (end < 8) && (start < 0x20)) { - if (end != (start + 1)) - start = ((start + 1) * cheight / 8) - 1; - else - start = ((end + 1) * cheight / 8) - 2; - end = ((end + 1) * cheight / 8) - 1; - } - vgahw_set_cursor_shape(start, end); -} - -static u16 -get_cursor_shape(u8 page) -{ - if (page > 7) - return 0; - // FIXME should handle VGA 14/16 lines - return GET_BDA(cursor_type); -} - -static void -set_cursor_pos(struct cursorpos cp) -{ - // Should not happen... - if (cp.page > 7) - return; - - // Bios cursor pos - SET_BDA(cursor_pos[cp.page], (cp.y << 8) | cp.x); - - // Set the hardware cursor - u8 current = GET_BDA(video_page); - if (cp.page != current) - return; - - // Get the dimensions - u16 nbcols = GET_BDA(video_cols); - u16 nbrows = GET_BDA(video_rows) + 1; - - // Calculate the address knowing nbcols nbrows and page num - u16 address = (SCREEN_IO_START(nbcols, nbrows, cp.page) - + cp.x + cp.y * nbcols); - - vgahw_set_cursor_pos(address); -} - -static struct cursorpos -get_cursor_pos(u8 page) -{ - if (page == 0xff) - // special case - use current page - page = GET_BDA(video_page); - if (page > 7) { - struct cursorpos cp = { 0, 0, 0xfe }; - return cp; - } - // FIXME should handle VGA 14/16 lines - u16 xy = GET_BDA(cursor_pos[page]); - struct cursorpos cp = {xy, xy>>8, page}; - return cp; -} - -static void -set_active_page(u8 page) -{ - if (page > 7) - return; - - // Get the mode - struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode)); - if (!vmode_g) - return; - - // Get pos curs pos for the right page - struct cursorpos cp = get_cursor_pos(page); - - u16 address; - if (GET_GLOBAL(vmode_g->memmodel) & TEXT) { - // Get the dimensions - u16 nbcols = GET_BDA(video_cols); - u16 nbrows = GET_BDA(video_rows) + 1; - - // Calculate the address knowing nbcols nbrows and page num - address = SCREEN_MEM_START(nbcols, nbrows, page); - SET_BDA(video_pagestart, address); - - // Start address - address = SCREEN_IO_START(nbcols, nbrows, page); - } else { - address = page * GET_GLOBAL(vmode_g->slength); - } - - vgahw_set_active_page(address); - - // And change the BIOS page - SET_BDA(video_page, page); - - dprintf(1, "Set active page %02x address %04x\n", page, address); - - // Display the cursor, now the page is active - set_cursor_pos(cp); -} - -static void -set_scan_lines(u8 lines) -{ - vgahw_set_scan_lines(lines); - if (lines == 8) - set_cursor_shape(0x06, 0x07); - else - set_cursor_shape(lines - 4, lines - 3); - SET_BDA(char_height, lines); - u16 vde = vgahw_get_vde(); - u8 rows = vde / lines; - SET_BDA(video_rows, rows - 1); - u16 cols = GET_BDA(video_cols); - SET_BDA(video_pagesize, rows * cols * 2); -} - - -/**************************************************************** - * Character writing - ****************************************************************/ - -// Scroll the screen one line. This function is designed to be called -// tail-recursive to reduce stack usage. -static void noinline -scroll_one(u16 nbrows, u16 nbcols, u8 page) -{ - struct cursorpos ul = {0, 0, page}; - struct cursorpos lr = {nbcols-1, nbrows-1, page}; - vgafb_scroll(1, -1, ul, lr); -} - -// Write a character to the screen at a given position. Implement -// special characters and scroll the screen if necessary. -static void -write_teletype(struct cursorpos *pcp, struct carattr ca) -{ - struct cursorpos cp = *pcp; - - // Get the dimensions - u16 nbrows = GET_BDA(video_rows) + 1; - u16 nbcols = GET_BDA(video_cols); - - switch (ca.car) { - case 7: - //FIXME should beep - break; - case 8: - if (cp.x > 0) - cp.x--; - break; - case '\r': - cp.x = 0; - break; - case '\n': - cp.y++; - break; - case '\t': - do { - struct carattr dummyca = {' ', ca.attr, ca.use_attr}; - vgafb_write_char(cp, dummyca); - cp.x++; - } while (cp.x < nbcols && cp.x % 8); - break; - default: - vgafb_write_char(cp, ca); - cp.x++; - } - - // Do we need to wrap ? - if (cp.x == nbcols) { - cp.x = 0; - cp.y++; - } - // Do we need to scroll ? - if (cp.y < nbrows) { - *pcp = cp; - return; - } - // Scroll screen - cp.y--; - *pcp = cp; - scroll_one(nbrows, nbcols, cp.page); -} - -// Write out a buffer of alternating characters and attributes. -static void -write_attr_string(struct cursorpos *pcp, u16 count, u16 seg, u8 *offset_far) -{ - while (count--) { - u8 car = GET_FARVAR(seg, *offset_far); - offset_far++; - u8 attr = GET_FARVAR(seg, *offset_far); - offset_far++; - - struct carattr ca = {car, attr, 1}; - write_teletype(pcp, ca); - } -} - -// Write out a buffer of characters. -static void -write_string(struct cursorpos *pcp, u8 attr, u16 count, u16 seg, u8 *offset_far) -{ - while (count--) { - u8 car = GET_FARVAR(seg, *offset_far); - offset_far++; - - struct carattr ca = {car, attr, 1}; - write_teletype(pcp, ca); - } -} - - -/**************************************************************** - * Save and restore bda state - ****************************************************************/ - -static void -save_bda_state(u16 seg, struct saveBDAstate *info) -{ - SET_FARVAR(seg, info->video_mode, GET_BDA(video_mode)); - SET_FARVAR(seg, info->video_cols, GET_BDA(video_cols)); - SET_FARVAR(seg, info->video_pagesize, GET_BDA(video_pagesize)); - SET_FARVAR(seg, info->crtc_address, GET_BDA(crtc_address)); - SET_FARVAR(seg, info->video_rows, GET_BDA(video_rows)); - SET_FARVAR(seg, info->char_height, GET_BDA(char_height)); - SET_FARVAR(seg, info->video_ctl, GET_BDA(video_ctl)); - SET_FARVAR(seg, info->video_switches, GET_BDA(video_switches)); - SET_FARVAR(seg, info->modeset_ctl, GET_BDA(modeset_ctl)); - SET_FARVAR(seg, info->cursor_type, GET_BDA(cursor_type)); - u16 i; - for (i=0; i<8; i++) - SET_FARVAR(seg, info->cursor_pos[i], GET_BDA(cursor_pos[i])); - SET_FARVAR(seg, info->video_pagestart, GET_BDA(video_pagestart)); - SET_FARVAR(seg, info->video_page, GET_BDA(video_page)); - /* current font */ - SET_FARVAR(seg, info->font0, GET_IVT(0x1f)); - SET_FARVAR(seg, info->font1, GET_IVT(0x43)); -} - -static void -restore_bda_state(u16 seg, struct saveBDAstate *info) -{ - SET_BDA(video_mode, GET_FARVAR(seg, info->video_mode)); - SET_BDA(video_cols, GET_FARVAR(seg, info->video_cols)); - SET_BDA(video_pagesize, GET_FARVAR(seg, info->video_pagesize)); - SET_BDA(crtc_address, GET_FARVAR(seg, info->crtc_address)); - SET_BDA(video_rows, GET_FARVAR(seg, info->video_rows)); - SET_BDA(char_height, GET_FARVAR(seg, info->char_height)); - SET_BDA(video_ctl, GET_FARVAR(seg, info->video_ctl)); - SET_BDA(video_switches, GET_FARVAR(seg, info->video_switches)); - SET_BDA(modeset_ctl, GET_FARVAR(seg, info->modeset_ctl)); - SET_BDA(cursor_type, GET_FARVAR(seg, info->cursor_type)); - u16 i; - for (i = 0; i < 8; i++) - SET_BDA(cursor_pos[i], GET_FARVAR(seg, info->cursor_pos[i])); - SET_BDA(video_pagestart, GET_FARVAR(seg, info->video_pagestart)); - SET_BDA(video_page, GET_FARVAR(seg, info->video_page)); - /* current font */ - SET_IVT(0x1f, GET_FARVAR(seg, info->font0)); - SET_IVT(0x43, GET_FARVAR(seg, info->font1)); -} - - -/**************************************************************** - * VGA int 10 handler - ****************************************************************/ - -// set video mode -void -vga_set_mode(u8 mode, u8 noclearmem) -{ - // find the entry in the video modes - struct vgamode_s *vmode_g = find_vga_entry(mode); - dprintf(1, "mode search %02x found %p\n", mode, vmode_g); - if (!vmode_g) - return; - - // Read the bios mode set control - u8 modeset_ctl = GET_BDA(modeset_ctl); - - // Then we know the number of lines -// FIXME - - // if palette loading (bit 3 of modeset ctl = 0) - if ((modeset_ctl & 0x08) == 0) { // Set the PEL mask - vgahw_set_pel_mask(GET_GLOBAL(vmode_g->pelmask)); - - // From which palette - u8 *palette_g = GET_GLOBAL(vmode_g->dac); - u16 palsize = GET_GLOBAL(vmode_g->dacsize) / 3; - - // Always 256*3 values - vgahw_set_dac_regs(get_global_seg(), palette_g, 0, palsize); - u16 i; - for (i = palsize; i < 0x0100; i++) { - static u8 rgb[3] VAR16; - vgahw_set_dac_regs(get_global_seg(), rgb, i, 1); - } - - if ((modeset_ctl & 0x02) == 0x02) - perform_gray_scale_summing(0x00, 0x100); - } - - vgahw_set_mode(vmode_g); - - if (noclearmem == 0x00) - clear_screen(vmode_g); - - // Set CRTC address VGA or MDA - u16 crtc_addr = VGAREG_VGA_CRTC_ADDRESS; - if (GET_GLOBAL(vmode_g->memmodel) == MTEXT) - crtc_addr = VGAREG_MDA_CRTC_ADDRESS; - - // Set the BIOS mem - u16 cheight = GET_GLOBAL(vmode_g->cheight); - SET_BDA(video_mode, mode); - SET_BDA(video_cols, GET_GLOBAL(vmode_g->twidth)); - SET_BDA(video_pagesize, GET_GLOBAL(vmode_g->slength)); - SET_BDA(crtc_address, crtc_addr); - SET_BDA(video_rows, GET_GLOBAL(vmode_g->theight)-1); - SET_BDA(char_height, cheight); - SET_BDA(video_ctl, (0x60 | noclearmem)); - SET_BDA(video_switches, 0xF9); - SET_BDA(modeset_ctl, GET_BDA(modeset_ctl) & 0x7f); - - // FIXME We nearly have the good tables. to be reworked - SET_BDA(dcc_index, 0x08); // 8 is VGA should be ok for now - SET_BDA(video_savetable - , SEGOFF(get_global_seg(), (u32)&video_save_pointer_table)); - - // FIXME - SET_BDA(video_msr, 0x00); // Unavailable on vanilla vga, but... - SET_BDA(video_pal, 0x00); // Unavailable on vanilla vga, but... - - // Set cursor shape - if (GET_GLOBAL(vmode_g->memmodel) & TEXT) - set_cursor_shape(0x06, 0x07); - // Set cursor pos for page 0..7 - int i; - for (i = 0; i < 8; i++) { - struct cursorpos cp = {0, 0, i}; - set_cursor_pos(cp); - } - - // Set active page 0 - set_active_page(0x00); - - // Write the fonts in memory - if (GET_GLOBAL(vmode_g->memmodel) & TEXT) { - call16_vgaint(0x1104, 0); - call16_vgaint(0x1103, 0); - } - // Set the ints 0x1F and 0x43 - SET_IVT(0x1f, SEGOFF(get_global_seg(), (u32)&vgafont8[128 * 8])); - - switch (cheight) { - case 8: - SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont8)); - break; - case 14: - SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont14)); - break; - case 16: - SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont16)); - break; - } -} - -static void -handle_1000(struct bregs *regs) -{ - u8 noclearmem = regs->al & 0x80; - u8 mode = regs->al & 0x7f; - - // Set regs->al - if (mode > 7) - regs->al = 0x20; - else if (mode == 6) - regs->al = 0x3f; - else - regs->al = 0x30; - - if (CONFIG_VGA_CIRRUS) { - int ret = cirrus_set_video_mode(mode, noclearmem); - if (ret) - return; - } - - if (bochsvga_enabled()) - bochsvga_hires_enable(0); - - vga_set_mode(mode, noclearmem); -} - -static void -handle_1001(struct bregs *regs) -{ - set_cursor_shape(regs->ch, regs->cl); -} - -static void -handle_1002(struct bregs *regs) -{ - struct cursorpos cp = {regs->dl, regs->dh, regs->bh}; - set_cursor_pos(cp); -} - -static void -handle_1003(struct bregs *regs) -{ - regs->cx = get_cursor_shape(regs->bh); - struct cursorpos cp = get_cursor_pos(regs->bh); - regs->dl = cp.x; - regs->dh = cp.y; -} - -// Read light pen pos (unimplemented) -static void -handle_1004(struct bregs *regs) -{ - debug_stub(regs); - regs->ax = regs->bx = regs->cx = regs->dx = 0; -} - -static void -handle_1005(struct bregs *regs) -{ - set_active_page(regs->al); -} - -static void -verify_scroll(struct bregs *regs, int dir) -{ - u8 page = GET_BDA(video_page); - struct cursorpos ul = {regs->cl, regs->ch, page}; - struct cursorpos lr = {regs->dl, regs->dh, page}; - - u16 nbrows = GET_BDA(video_rows) + 1; - if (lr.y >= nbrows) - lr.y = nbrows - 1; - u16 nbcols = GET_BDA(video_cols); - if (lr.x >= nbcols) - lr.x = nbcols - 1; - - if (ul.x > lr.x || ul.y > lr.y) - return; - - u16 nblines = regs->al; - if (!nblines || nblines > lr.y - ul.y + 1) - nblines = lr.y - ul.y + 1; - - vgafb_scroll(dir * nblines, regs->bh, ul, lr); -} - -static void -handle_1006(struct bregs *regs) -{ - verify_scroll(regs, 1); -} - -static void -handle_1007(struct bregs *regs) -{ - verify_scroll(regs, -1); -} - -static void -handle_1008(struct bregs *regs) -{ - struct carattr ca = vgafb_read_char(get_cursor_pos(regs->bh)); - regs->al = ca.car; - regs->ah = ca.attr; -} - -static void noinline -write_chars(u8 page, struct carattr ca, u16 count) -{ - struct cursorpos cp = get_cursor_pos(page); - while (count--) { - vgafb_write_char(cp, ca); - cp.x++; - } -} - -static void -handle_1009(struct bregs *regs) -{ - struct carattr ca = {regs->al, regs->bl, 1}; - write_chars(regs->bh, ca, regs->cx); -} - -static void -handle_100a(struct bregs *regs) -{ - struct carattr ca = {regs->al, regs->bl, 0}; - write_chars(regs->bh, ca, regs->cx); -} - - -static void -handle_100b00(struct bregs *regs) -{ - vgahw_set_border_color(regs->bl); -} - -static void -handle_100b01(struct bregs *regs) -{ - vgahw_set_palette(regs->bl); -} - -static void -handle_100bXX(struct bregs *regs) -{ - debug_stub(regs); -} - -static void -handle_100b(struct bregs *regs) -{ - switch (regs->bh) { - case 0x00: handle_100b00(regs); break; - case 0x01: handle_100b01(regs); break; - default: handle_100bXX(regs); break; - } -} - - -static void -handle_100c(struct bregs *regs) -{ - // XXX - page (regs->bh) is unused - vgafb_write_pixel(regs->al, regs->cx, regs->dx); -} - -static void -handle_100d(struct bregs *regs) -{ - // XXX - page (regs->bh) is unused - regs->al = vgafb_read_pixel(regs->cx, regs->dx); -} - -static void noinline -handle_100e(struct bregs *regs) -{ - // Ralf Brown Interrupt list is WRONG on bh(page) - // We do output only on the current page ! - struct carattr ca = {regs->al, regs->bl, 0}; - struct cursorpos cp = get_cursor_pos(0xff); - write_teletype(&cp, ca); - set_cursor_pos(cp); -} - -static void -handle_100f(struct bregs *regs) -{ - regs->bh = GET_BDA(video_page); - regs->al = GET_BDA(video_mode) | (GET_BDA(video_ctl) & 0x80); - regs->ah = GET_BDA(video_cols); -} - - -static void -handle_101000(struct bregs *regs) -{ - if (regs->bl > 0x14) - return; - vgahw_set_single_palette_reg(regs->bl, regs->bh); -} - -static void -handle_101001(struct bregs *regs) -{ - vgahw_set_overscan_border_color(regs->bh); -} - -static void -handle_101002(struct bregs *regs) -{ - vgahw_set_all_palette_reg(regs->es, (u8*)(regs->dx + 0)); -} - -static void -handle_101003(struct bregs *regs) -{ - vgahw_toggle_intensity(regs->bl); -} - -static void -handle_101007(struct bregs *regs) -{ - if (regs->bl > 0x14) - return; - regs->bh = vgahw_get_single_palette_reg(regs->bl); -} - -static void -handle_101008(struct bregs *regs) -{ - regs->bh = vgahw_get_overscan_border_color(); -} - -static void -handle_101009(struct bregs *regs) -{ - vgahw_get_all_palette_reg(regs->es, (u8*)(regs->dx + 0)); -} - -static void noinline -handle_101010(struct bregs *regs) -{ - u8 rgb[3] = {regs->dh, regs->ch, regs->cl}; - vgahw_set_dac_regs(GET_SEG(SS), rgb, regs->bx, 1); -} - -static void -handle_101012(struct bregs *regs) -{ - vgahw_set_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx); -} - -static void -handle_101013(struct bregs *regs) -{ - vgahw_select_video_dac_color_page(regs->bl, regs->bh); -} - -static void noinline -handle_101015(struct bregs *regs) -{ - u8 rgb[3]; - vgahw_get_dac_regs(GET_SEG(SS), rgb, regs->bx, 1); - regs->dh = rgb[0]; - regs->ch = rgb[1]; - regs->cl = rgb[2]; -} - -static void -handle_101017(struct bregs *regs) -{ - vgahw_get_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx); -} - -static void -handle_101018(struct bregs *regs) -{ - vgahw_set_pel_mask(regs->bl); -} - -static void -handle_101019(struct bregs *regs) -{ - regs->bl = vgahw_get_pel_mask(); -} - -static void -handle_10101a(struct bregs *regs) -{ - vgahw_read_video_dac_state(®s->bl, ®s->bh); -} - -static void -handle_10101b(struct bregs *regs) -{ - perform_gray_scale_summing(regs->bx, regs->cx); -} - -static void -handle_1010XX(struct bregs *regs) -{ - debug_stub(regs); -} - -static void -handle_1010(struct bregs *regs) -{ - switch (regs->al) { - case 0x00: handle_101000(regs); break; - case 0x01: handle_101001(regs); break; - case 0x02: handle_101002(regs); break; - case 0x03: handle_101003(regs); break; - case 0x07: handle_101007(regs); break; - case 0x08: handle_101008(regs); break; - case 0x09: handle_101009(regs); break; - case 0x10: handle_101010(regs); break; - case 0x12: handle_101012(regs); break; - case 0x13: handle_101013(regs); break; - case 0x15: handle_101015(regs); break; - case 0x17: handle_101017(regs); break; - case 0x18: handle_101018(regs); break; - case 0x19: handle_101019(regs); break; - case 0x1a: handle_10101a(regs); break; - case 0x1b: handle_10101b(regs); break; - default: handle_1010XX(regs); break; - } -} - - -static void -handle_101100(struct bregs *regs) -{ - vgafb_load_font(regs->es, (void*)(regs->bp+0), regs->cx - , regs->dx, regs->bl, regs->bh); -} - -static void -handle_101101(struct bregs *regs) -{ - vgafb_load_font(get_global_seg(), vgafont14, 0x100, 0, regs->bl, 14); -} - -static void -handle_101102(struct bregs *regs) -{ - vgafb_load_font(get_global_seg(), vgafont8, 0x100, 0, regs->bl, 8); -} - -static void -handle_101103(struct bregs *regs) -{ - vgahw_set_text_block_specifier(regs->bl); -} - -static void -handle_101104(struct bregs *regs) -{ - vgafb_load_font(get_global_seg(), vgafont16, 0x100, 0, regs->bl, 16); -} - -static void -handle_101110(struct bregs *regs) -{ - vgafb_load_font(regs->es, (void*)(regs->bp+0), regs->cx - , regs->dx, regs->bl, regs->bh); - set_scan_lines(regs->bh); -} - -static void -handle_101111(struct bregs *regs) -{ - vgafb_load_font(get_global_seg(), vgafont14, 0x100, 0, regs->bl, 14); - set_scan_lines(14); -} - -static void -handle_101112(struct bregs *regs) -{ - vgafb_load_font(get_global_seg(), vgafont8, 0x100, 0, regs->bl, 8); - set_scan_lines(8); -} - -static void -handle_101114(struct bregs *regs) -{ - vgafb_load_font(get_global_seg(), vgafont16, 0x100, 0, regs->bl, 16); - set_scan_lines(16); -} - -static void -handle_101130(struct bregs *regs) -{ - switch (regs->bh) { - case 0x00: { - struct segoff_s so = GET_IVT(0x1f); - regs->es = so.seg; - regs->bp = so.offset; - break; - } - case 0x01: { - struct segoff_s so = GET_IVT(0x43); - regs->es = so.seg; - regs->bp = so.offset; - break; - } - case 0x02: - regs->es = get_global_seg(); - regs->bp = (u32)vgafont14; - break; - case 0x03: - regs->es = get_global_seg(); - regs->bp = (u32)vgafont8; - break; - case 0x04: - regs->es = get_global_seg(); - regs->bp = (u32)vgafont8 + 128 * 8; - break; - case 0x05: - regs->es = get_global_seg(); - regs->bp = (u32)vgafont14alt; - break; - case 0x06: - regs->es = get_global_seg(); - regs->bp = (u32)vgafont16; - break; - case 0x07: - regs->es = get_global_seg(); - regs->bp = (u32)vgafont16alt; - break; - default: - dprintf(1, "Get font info BH(%02x) was discarded\n", regs->bh); - return; - } - // Set byte/char of on screen font - regs->cx = GET_BDA(char_height) & 0xff; - - // Set Highest char row - regs->dx = GET_BDA(video_rows); -} - -static void -handle_1011XX(struct bregs *regs) -{ - debug_stub(regs); -} - -static void -handle_1011(struct bregs *regs) -{ - switch (regs->al) { - case 0x00: handle_101100(regs); break; - case 0x01: handle_101101(regs); break; - case 0x02: handle_101102(regs); break; - case 0x03: handle_101103(regs); break; - case 0x04: handle_101104(regs); break; - case 0x10: handle_101110(regs); break; - case 0x11: handle_101111(regs); break; - case 0x12: handle_101112(regs); break; - case 0x14: handle_101114(regs); break; - case 0x30: handle_101130(regs); break; - default: handle_1011XX(regs); break; - } -} - - -static void -handle_101210(struct bregs *regs) -{ - u16 crtc_addr = GET_BDA(crtc_address); - if (crtc_addr == VGAREG_MDA_CRTC_ADDRESS) - regs->bx = 0x0103; - else - regs->bx = 0x0003; - regs->cx = GET_BDA(video_switches) & 0x0f; -} - -static void -handle_101230(struct bregs *regs) -{ - u8 mctl = GET_BDA(modeset_ctl); - u8 vswt = GET_BDA(video_switches); - switch (regs->al) { - case 0x00: - // 200 lines - mctl = (mctl & ~0x10) | 0x80; - vswt = (vswt & ~0x0f) | 0x08; - break; - case 0x01: - // 350 lines - mctl &= ~0x90; - vswt = (vswt & ~0x0f) | 0x09; - break; - case 0x02: - // 400 lines - mctl = (mctl & ~0x80) | 0x10; - vswt = (vswt & ~0x0f) | 0x09; - break; - default: - dprintf(1, "Select vert res (%02x) was discarded\n", regs->al); - break; - } - SET_BDA(modeset_ctl, mctl); - SET_BDA(video_switches, vswt); - regs->al = 0x12; -} - -static void -handle_101231(struct bregs *regs) -{ - u8 v = (regs->al & 0x01) << 3; - u8 mctl = GET_BDA(video_ctl) & ~0x08; - SET_BDA(video_ctl, mctl | v); - regs->al = 0x12; -} - -static void -handle_101232(struct bregs *regs) -{ - vgahw_enable_video_addressing(regs->al); - regs->al = 0x12; -} - -static void -handle_101233(struct bregs *regs) -{ - u8 v = ((regs->al << 1) & 0x02) ^ 0x02; - u8 v2 = GET_BDA(modeset_ctl) & ~0x02; - SET_BDA(modeset_ctl, v | v2); - regs->al = 0x12; -} - -static void -handle_101234(struct bregs *regs) -{ - u8 v = (regs->al & 0x01) ^ 0x01; - u8 v2 = GET_BDA(modeset_ctl) & ~0x01; - SET_BDA(modeset_ctl, v | v2); - regs->al = 0x12; -} - -static void -handle_101235(struct bregs *regs) -{ - debug_stub(regs); - regs->al = 0x12; -} - -static void -handle_101236(struct bregs *regs) -{ - debug_stub(regs); - regs->al = 0x12; -} - -static void -handle_1012XX(struct bregs *regs) -{ - debug_stub(regs); -} - -static void -handle_1012(struct bregs *regs) -{ - switch (regs->bl) { - case 0x10: handle_101210(regs); break; - case 0x30: handle_101230(regs); break; - case 0x31: handle_101231(regs); break; - case 0x32: handle_101232(regs); break; - case 0x33: handle_101233(regs); break; - case 0x34: handle_101234(regs); break; - case 0x35: handle_101235(regs); break; - case 0x36: handle_101236(regs); break; - default: handle_1012XX(regs); break; - } - - // XXX - cirrus has 1280, 1281, 1282, 1285, 129a, 12a0, 12a1, 12a2, 12ae -} - - -// Write string -static void noinline -handle_1013(struct bregs *regs) -{ - struct cursorpos cp = {regs->dl, regs->dh, regs->bh}; - // if row=0xff special case : use current cursor position - if (cp.y == 0xff) - cp = get_cursor_pos(cp.page); - u8 flag = regs->al; - if (flag & 2) - write_attr_string(&cp, regs->cx, regs->es, (void*)(regs->bp + 0)); - else - write_string(&cp, regs->bl, regs->cx, regs->es, (void*)(regs->bp + 0)); - - if (flag & 1) - set_cursor_pos(cp); -} - - -static void -handle_101a00(struct bregs *regs) -{ - regs->bx = GET_BDA(dcc_index); - regs->al = 0x1a; -} - -static void -handle_101a01(struct bregs *regs) -{ - SET_BDA(dcc_index, regs->bl); - dprintf(1, "Alternate Display code (%02x) was discarded\n", regs->bh); - regs->al = 0x1a; -} - -static void -handle_101aXX(struct bregs *regs) -{ - debug_stub(regs); -} - -static void -handle_101a(struct bregs *regs) -{ - switch (regs->al) { - case 0x00: handle_101a00(regs); break; - case 0x01: handle_101a01(regs); break; - default: handle_101aXX(regs); break; - } -} - - -struct funcInfo { - struct segoff_s static_functionality; - u8 bda_0x49[30]; - u8 bda_0x84[3]; - u8 dcc_index; - u8 dcc_alt; - u16 colors; - u8 pages; - u8 scan_lines; - u8 primary_char; - u8 secondar_char; - u8 misc; - u8 non_vga_mode; - u8 reserved_2f[2]; - u8 video_mem; - u8 save_flags; - u8 disp_info; - u8 reserved_34[12]; -}; - -static void -handle_101b(struct bregs *regs) -{ - u16 seg = regs->es; - struct funcInfo *info = (void*)(regs->di+0); - memset_far(seg, info, 0, sizeof(*info)); - // Address of static functionality table - SET_FARVAR(seg, info->static_functionality - , SEGOFF(get_global_seg(), (u32)static_functionality)); - - // Hard coded copy from BIOS area. Should it be cleaner ? - memcpy_far(seg, info->bda_0x49, SEG_BDA, (void*)0x49 - , sizeof(info->bda_0x49)); - memcpy_far(seg, info->bda_0x84, SEG_BDA, (void*)0x84 - , sizeof(info->bda_0x84)); - - SET_FARVAR(seg, info->dcc_index, GET_BDA(dcc_index)); - SET_FARVAR(seg, info->colors, 16); - SET_FARVAR(seg, info->pages, 8); - SET_FARVAR(seg, info->scan_lines, 2); - SET_FARVAR(seg, info->video_mem, 3); - regs->al = 0x1B; -} - - -static void -handle_101c00(struct bregs *regs) -{ - u16 flags = regs->cx; - u16 size = 0; - if (flags & 1) - size += sizeof(struct saveVideoHardware); - if (flags & 2) - size += sizeof(struct saveBDAstate); - if (flags & 4) - size += sizeof(struct saveDACcolors); - regs->bx = size; - regs->al = 0x1c; -} - -static void -handle_101c01(struct bregs *regs) -{ - u16 flags = regs->cx; - u16 seg = regs->es; - void *data = (void*)(regs->bx+0); - if (flags & 1) { - vgahw_save_state(seg, data); - data += sizeof(struct saveVideoHardware); - } - if (flags & 2) { - save_bda_state(seg, data); - data += sizeof(struct saveBDAstate); - } - if (flags & 4) - vgahw_save_dac_state(seg, data); - regs->al = 0x1c; -} - -static void -handle_101c02(struct bregs *regs) -{ - u16 flags = regs->cx; - u16 seg = regs->es; - void *data = (void*)(regs->bx+0); - if (flags & 1) { - vgahw_restore_state(seg, data); - data += sizeof(struct saveVideoHardware); - } - if (flags & 2) { - restore_bda_state(seg, data); - data += sizeof(struct saveBDAstate); - } - if (flags & 4) - vgahw_restore_dac_state(seg, data); - regs->al = 0x1c; -} - -static void -handle_101cXX(struct bregs *regs) -{ - debug_stub(regs); -} - -static void -handle_101c(struct bregs *regs) -{ - switch (regs->al) { - case 0x00: handle_101c00(regs); break; - case 0x01: handle_101c01(regs); break; - case 0x02: handle_101c02(regs); break; - default: handle_101cXX(regs); break; - } -} - -static void -handle_104f00(struct bregs *regs) -{ - u16 seg = regs->es; - struct vbe_info *info = (void*)(regs->di+0); - - if (GET_FARVAR(seg, info->signature) == VBE2_SIGNATURE) { - dprintf(4, "Get VBE Controller: VBE2 Signature found\n"); - } else if (GET_FARVAR(seg, info->signature) == VESA_SIGNATURE) { - dprintf(4, "Get VBE Controller: VESA Signature found\n"); - } else { - dprintf(4, "Get VBE Controller: Invalid Signature\n"); - } - - memset_far(seg, info, 0, sizeof(*info)); - - SET_FARVAR(seg, info->signature, VESA_SIGNATURE); - - SET_FARVAR(seg, info->version, 0x0200); - - SET_FARVAR(seg, info->oem_string, - SEGOFF(get_global_seg(), (u32)VBE_OEM_STRING)); - SET_FARVAR(seg, info->capabilities, 0x1); /* 8BIT DAC */ - - /* We generate our mode list in the reserved field of the info block */ - SET_FARVAR(seg, info->video_mode, SEGOFF(seg, regs->di + 34)); - - /* Total memory (in 64 blocks) */ - SET_FARVAR(seg, info->total_memory, bochsvga_total_mem()); - - SET_FARVAR(seg, info->oem_vendor_string, - SEGOFF(get_global_seg(), (u32)VBE_VENDOR_STRING)); - SET_FARVAR(seg, info->oem_product_string, - SEGOFF(get_global_seg(), (u32)VBE_PRODUCT_STRING)); - SET_FARVAR(seg, info->oem_revision_string, - SEGOFF(get_global_seg(), (u32)VBE_REVISION_STRING)); - - /* Fill list of modes */ - bochsvga_list_modes(seg, regs->di + 32); - - regs->al = regs->ah; /* 0x4F, Function supported */ - regs->ah = 0x0; /* 0x0, Function call successful */ -} - -static void -handle_104f01(struct bregs *regs) -{ - u16 seg = regs->es; - struct vbe_mode_info *info = (void*)(regs->di+0); - u16 mode = regs->cx; - struct vbe_modeinfo modeinfo; - int rc; - - dprintf(1, "VBE mode info request: %x\n", mode); - - rc = bochsvga_mode_info(mode, &modeinfo); - if (rc) { - dprintf(1, "VBE mode %x not found\n", mode); - regs->ax = 0x100; - return; - } - - u16 mode_attr = VBE_MODE_ATTRIBUTE_SUPPORTED | - VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE | - VBE_MODE_ATTRIBUTE_COLOR_MODE | - VBE_MODE_ATTRIBUTE_GRAPHICS_MODE; - if (modeinfo.depth == 4) - mode_attr |= VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT; - else - mode_attr |= VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE; - SET_FARVAR(seg, info->mode_attributes, mode_attr); - SET_FARVAR(seg, info->winA_attributes, - VBE_WINDOW_ATTRIBUTE_RELOCATABLE | - VBE_WINDOW_ATTRIBUTE_READABLE | - VBE_WINDOW_ATTRIBUTE_WRITEABLE); - SET_FARVAR(seg, info->winB_attributes, 0); - SET_FARVAR(seg, info->win_granularity, 64); /* Bank size 64K */ - SET_FARVAR(seg, info->win_size, 64); /* Bank size 64K */ - SET_FARVAR(seg, info->winA_seg, 0xA000); - SET_FARVAR(seg, info->winB_seg, 0x0); - SET_FARVAR(seg, info->win_func_ptr.segoff, 0x0); - SET_FARVAR(seg, info->bytes_per_scanline, modeinfo.linesize); - SET_FARVAR(seg, info->xres, modeinfo.width); - SET_FARVAR(seg, info->yres, modeinfo.height); - SET_FARVAR(seg, info->xcharsize, 8); - SET_FARVAR(seg, info->ycharsize, 16); - if (modeinfo.depth == 4) - SET_FARVAR(seg, info->planes, 4); - else - SET_FARVAR(seg, info->planes, 1); - SET_FARVAR(seg, info->bits_per_pixel, modeinfo.depth); - SET_FARVAR(seg, info->banks, - (modeinfo.linesize * modeinfo.height + 65535) / 65536); - if (modeinfo.depth == 4) - SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PLANAR); - else if (modeinfo.depth == 8) - SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PACKED_PIXEL); - else - SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_DIRECT_COLOR); - SET_FARVAR(seg, info->bank_size, 0); - u32 pages = modeinfo.vram_size / (modeinfo.height * modeinfo.linesize); - if (modeinfo.depth == 4) - SET_FARVAR(seg, info->pages, (pages / 4) - 1); - else - SET_FARVAR(seg, info->pages, pages - 1); - SET_FARVAR(seg, info->reserved0, 1); - - u8 r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos; - - switch (modeinfo.depth) { - case 15: r_size = 5; r_pos = 10; g_size = 5; g_pos = 5; - b_size = 5; b_pos = 0; a_size = 1; a_pos = 15; break; - case 16: r_size = 5; r_pos = 11; g_size = 6; g_pos = 5; - b_size = 5; b_pos = 0; a_size = 0; a_pos = 0; break; - case 24: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8; - b_size = 8; b_pos = 0; a_size = 0; a_pos = 0; break; - case 32: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8; - b_size = 8; b_pos = 0; a_size = 8; a_pos = 24; break; - default: r_size = 0; r_pos = 0; g_size = 0; g_pos = 0; - b_size = 0; b_pos = 0; a_size = 0; a_pos = 0; break; - } - - SET_FARVAR(seg, info->red_size, r_size); - SET_FARVAR(seg, info->red_pos, r_pos); - SET_FARVAR(seg, info->green_size, g_size); - SET_FARVAR(seg, info->green_pos, g_pos); - SET_FARVAR(seg, info->blue_size, b_size); - SET_FARVAR(seg, info->blue_pos, b_pos); - SET_FARVAR(seg, info->alpha_size, a_size); - SET_FARVAR(seg, info->alpha_pos, a_pos); - - if (modeinfo.depth == 32) - SET_FARVAR(seg, info->directcolor_info, - VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE); - else - SET_FARVAR(seg, info->directcolor_info, 0); - - if (modeinfo.depth > 4) - SET_FARVAR(seg, info->phys_base, modeinfo.phys_base); - else - SET_FARVAR(seg, info->phys_base, 0); - - SET_FARVAR(seg, info->reserved1, 0); - SET_FARVAR(seg, info->reserved2, 0); - SET_FARVAR(seg, info->linear_bytes_per_scanline, modeinfo.linesize); - SET_FARVAR(seg, info->bank_pages, 0); - SET_FARVAR(seg, info->linear_pages, 0); - SET_FARVAR(seg, info->linear_red_size, r_size); - SET_FARVAR(seg, info->linear_red_pos, r_pos); - SET_FARVAR(seg, info->linear_green_size, g_size); - SET_FARVAR(seg, info->linear_green_pos, g_pos); - SET_FARVAR(seg, info->linear_blue_size, b_size); - SET_FARVAR(seg, info->linear_blue_pos, b_pos); - SET_FARVAR(seg, info->linear_alpha_size, a_size); - SET_FARVAR(seg, info->linear_alpha_pos, a_pos); - SET_FARVAR(seg, info->pixclock_max, 0); - - regs->al = regs->ah; /* 0x4F, Function supported */ - regs->ah = 0x0; /* 0x0, Function call successful */ -} - -static void -handle_104f02(struct bregs *regs) -{ - //u16 seg = regs->es; - //struct vbe_crtc_info *crtc_info = (void*)(regs->di+0); - u16 mode = regs->bx; - struct vbe_modeinfo modeinfo; - int rc; - - dprintf(1, "VBE mode set: %x\n", mode); - - if (mode < 0x100) { /* VGA */ - dprintf(1, "set VGA mode %x\n", mode); - - bochsvga_hires_enable(0); - vga_set_mode(mode, 0); - } else { /* VBE */ - rc = bochsvga_mode_info(mode & 0x1ff, &modeinfo); - if (rc) { - dprintf(1, "VBE mode %x not found\n", mode & 0x1ff); - regs->ax = 0x100; - return; - } - bochsvga_hires_enable(1); - bochsvga_set_mode(mode & 0x1ff, &modeinfo); - - if (mode & 0x4000) { - /* Linear frame buffer */ - /* XXX: ??? */ - } - if (!(mode & 0x8000)) { - bochsvga_clear_scr(); - } - } - - regs->al = regs->ah; /* 0x4F, Function supported */ - regs->ah = 0x0; /* 0x0, Function call successful */ -} - -static void -handle_104f03(struct bregs *regs) -{ - if (!bochsvga_hires_enabled()) { - regs->bx = GET_BDA(video_mode); - } else { - regs->bx = bochsvga_curr_mode(); - } - - dprintf(1, "VBE current mode=%x\n", regs->bx); - - regs->al = regs->ah; /* 0x4F, Function supported */ - regs->ah = 0x0; /* 0x0, Function call successful */ -} - -static void -handle_104f04(struct bregs *regs) -{ - debug_enter(regs, DEBUG_VGA_10); - regs->ax = 0x0100; -} - -static void -handle_104f05(struct bregs *regs) -{ - debug_enter(regs, DEBUG_VGA_10); - regs->ax = 0x0100; -} - -static void -handle_104f06(struct bregs *regs) -{ - debug_enter(regs, DEBUG_VGA_10); - regs->ax = 0x0100; -} - -static void -handle_104f07(struct bregs *regs) -{ - debug_enter(regs, DEBUG_VGA_10); - regs->ax = 0x0100; -} - -static void -handle_104f08(struct bregs *regs) -{ - debug_enter(regs, DEBUG_VGA_10); - regs->ax = 0x0100; -} - -static void -handle_104f0a(struct bregs *regs) -{ - debug_enter(regs, DEBUG_VGA_10); - regs->ax = 0x0100; -} - -static void -handle_104fXX(struct bregs *regs) -{ - debug_stub(regs); - regs->ax = 0x0100; -} - -static void -handle_104f(struct bregs *regs) -{ - if (!bochsvga_enabled()) { - handle_104fXX(regs); - return; - } - - switch (regs->al) { - case 0x00: handle_104f00(regs); break; - case 0x01: handle_104f01(regs); break; - case 0x02: handle_104f02(regs); break; - case 0x03: handle_104f03(regs); break; - case 0x04: handle_104f04(regs); break; - case 0x05: handle_104f05(regs); break; - case 0x06: handle_104f06(regs); break; - case 0x07: handle_104f07(regs); break; - case 0x08: handle_104f08(regs); break; - case 0x0a: handle_104f0a(regs); break; - default: handle_104fXX(regs); break; - } -} - - -static void -handle_10XX(struct bregs *regs) -{ - debug_stub(regs); -} - -// INT 10h Video Support Service Entry Point -void VISIBLE16 -handle_10(struct bregs *regs) -{ - debug_enter(regs, DEBUG_VGA_10); - switch (regs->ah) { - case 0x00: handle_1000(regs); break; - case 0x01: handle_1001(regs); break; - case 0x02: handle_1002(regs); break; - case 0x03: handle_1003(regs); break; - case 0x04: handle_1004(regs); break; - case 0x05: handle_1005(regs); break; - case 0x06: handle_1006(regs); break; - case 0x07: handle_1007(regs); break; - case 0x08: handle_1008(regs); break; - case 0x09: handle_1009(regs); break; - case 0x0a: handle_100a(regs); break; - case 0x0b: handle_100b(regs); break; - case 0x0c: handle_100c(regs); break; - case 0x0d: handle_100d(regs); break; - case 0x0e: handle_100e(regs); break; - case 0x0f: handle_100f(regs); break; - case 0x10: handle_1010(regs); break; - case 0x11: handle_1011(regs); break; - case 0x12: handle_1012(regs); break; - case 0x13: handle_1013(regs); break; - case 0x1a: handle_101a(regs); break; - case 0x1b: handle_101b(regs); break; - case 0x1c: handle_101c(regs); break; - case 0x4f: handle_104f(regs); break; - default: handle_10XX(regs); break; - } -} - - -/**************************************************************** - * VGA post - ****************************************************************/ - -static void -init_bios_area(void) -{ - // init detected hardware BIOS Area - // set 80x25 color (not clear from RBIL but usual) - u16 eqf = GET_BDA(equipment_list_flags); - SET_BDA(equipment_list_flags, (eqf & 0xffcf) | 0x20); - - // Just for the first int10 find its children - - // the default char height - SET_BDA(char_height, 0x10); - - // Clear the screen - SET_BDA(video_ctl, 0x60); - - // Set the basic screen we have - SET_BDA(video_switches, 0xf9); - - // Set the basic modeset options - SET_BDA(modeset_ctl, 0x51); - - // Set the default MSR - SET_BDA(video_msr, 0x09); -} - -void VISIBLE16 -vga_post(struct bregs *regs) -{ - debug_enter(regs, DEBUG_VGA_POST); - - vgahw_init(); - - if (CONFIG_VGA_GEODELX) - geodelx_init(); - - init_bios_area(); - - bochsvga_init(regs->ah, regs->al); - - extern void entry_10(void); - SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10)); - - if (CONFIG_VGA_CIRRUS) - cirrus_init(); - - // XXX - clear screen and display info - - build_video_param(); - - // Fixup checksum - extern u8 _rom_header_size, _rom_header_checksum; - SET_VGA(_rom_header_checksum, 0); - u8 sum = -checksum_far(get_global_seg(), 0, _rom_header_size * 512); - SET_VGA(_rom_header_checksum, sum); -} diff --git a/vgasrc/vgabios.c b/vgasrc/vgabios.c new file mode 100644 index 0000000..2ff677e --- /dev/null +++ b/vgasrc/vgabios.c @@ -0,0 +1,1596 @@ +// VGA bios implementation +// +// Copyright (C) 2009 Kevin O'Connor +// Copyright (C) 2001-2008 the LGPL VGABios developers Team +// +// This file may be distributed under the terms of the GNU LGPLv3 license. + + +// TODO: +// * review correctness of converted asm by comparing with RBIL +// +// * convert vbe/clext code + +#include "bregs.h" // struct bregs +#include "biosvar.h" // GET_BDA +#include "util.h" // memset +#include "vgabios.h" // find_vga_entry +#include "optionroms.h" // struct pci_data +#include "config.h" // CONFIG_* +#include "vbe.h" // struct vbe_info +#include "geodelx.h" // geodelx_init +#include "bochsvga.h" // bochsvga_init + +// XXX +#define DEBUG_VGA_POST 1 +#define DEBUG_VGA_10 3 + + +/**************************************************************** + * PCI Data + ****************************************************************/ +#if CONFIG_VGA_PCI == 1 +struct pci_data rom_pci_data VAR16VISIBLE = { + .signature = PCI_ROM_SIGNATURE, + .vendor = CONFIG_VGA_VID, + .device = CONFIG_VGA_DID, + .dlen = 0x18, + .class_hi = 0x300, + .irevision = 1, + .type = PCIROM_CODETYPE_X86, + .indicator = 0x80, +}; +#endif + +/**************************************************************** + * Helper functions + ****************************************************************/ + +static inline void +call16_vgaint(u32 eax, u32 ebx) +{ + asm volatile( + "int $0x10\n" + "cli\n" + "cld" + : + : "a"(eax), "b"(ebx) + : "cc", "memory"); +} + +static void +perform_gray_scale_summing(u16 start, u16 count) +{ + vgahw_screen_disable(); + int i; + for (i = start; i < start+count; i++) { + u8 rgb[3]; + vgahw_get_dac_regs(GET_SEG(SS), rgb, i, 1); + + // intensity = ( 0.3 * Red ) + ( 0.59 * Green ) + ( 0.11 * Blue ) + u16 intensity = ((77 * rgb[0] + 151 * rgb[1] + 28 * rgb[2]) + 0x80) >> 8; + if (intensity > 0x3f) + intensity = 0x3f; + + vgahw_set_dac_regs(GET_SEG(SS), rgb, i, 1); + } + vgahw_screen_enable(); +} + +static void +set_cursor_shape(u8 start, u8 end) +{ + start &= 0x3f; + end &= 0x1f; + + u16 curs = (start << 8) + end; + SET_BDA(cursor_type, curs); + + u8 modeset_ctl = GET_BDA(modeset_ctl); + u16 cheight = GET_BDA(char_height); + if ((modeset_ctl & 0x01) && (cheight > 8) && (end < 8) && (start < 0x20)) { + if (end != (start + 1)) + start = ((start + 1) * cheight / 8) - 1; + else + start = ((end + 1) * cheight / 8) - 2; + end = ((end + 1) * cheight / 8) - 1; + } + vgahw_set_cursor_shape(start, end); +} + +static u16 +get_cursor_shape(u8 page) +{ + if (page > 7) + return 0; + // FIXME should handle VGA 14/16 lines + return GET_BDA(cursor_type); +} + +static void +set_cursor_pos(struct cursorpos cp) +{ + // Should not happen... + if (cp.page > 7) + return; + + // Bios cursor pos + SET_BDA(cursor_pos[cp.page], (cp.y << 8) | cp.x); + + // Set the hardware cursor + u8 current = GET_BDA(video_page); + if (cp.page != current) + return; + + // Get the dimensions + u16 nbcols = GET_BDA(video_cols); + u16 nbrows = GET_BDA(video_rows) + 1; + + // Calculate the address knowing nbcols nbrows and page num + u16 address = (SCREEN_IO_START(nbcols, nbrows, cp.page) + + cp.x + cp.y * nbcols); + + vgahw_set_cursor_pos(address); +} + +static struct cursorpos +get_cursor_pos(u8 page) +{ + if (page == 0xff) + // special case - use current page + page = GET_BDA(video_page); + if (page > 7) { + struct cursorpos cp = { 0, 0, 0xfe }; + return cp; + } + // FIXME should handle VGA 14/16 lines + u16 xy = GET_BDA(cursor_pos[page]); + struct cursorpos cp = {xy, xy>>8, page}; + return cp; +} + +static void +set_active_page(u8 page) +{ + if (page > 7) + return; + + // Get the mode + struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode)); + if (!vmode_g) + return; + + // Get pos curs pos for the right page + struct cursorpos cp = get_cursor_pos(page); + + u16 address; + if (GET_GLOBAL(vmode_g->memmodel) & TEXT) { + // Get the dimensions + u16 nbcols = GET_BDA(video_cols); + u16 nbrows = GET_BDA(video_rows) + 1; + + // Calculate the address knowing nbcols nbrows and page num + address = SCREEN_MEM_START(nbcols, nbrows, page); + SET_BDA(video_pagestart, address); + + // Start address + address = SCREEN_IO_START(nbcols, nbrows, page); + } else { + address = page * GET_GLOBAL(vmode_g->slength); + } + + vgahw_set_active_page(address); + + // And change the BIOS page + SET_BDA(video_page, page); + + dprintf(1, "Set active page %02x address %04x\n", page, address); + + // Display the cursor, now the page is active + set_cursor_pos(cp); +} + +static void +set_scan_lines(u8 lines) +{ + vgahw_set_scan_lines(lines); + if (lines == 8) + set_cursor_shape(0x06, 0x07); + else + set_cursor_shape(lines - 4, lines - 3); + SET_BDA(char_height, lines); + u16 vde = vgahw_get_vde(); + u8 rows = vde / lines; + SET_BDA(video_rows, rows - 1); + u16 cols = GET_BDA(video_cols); + SET_BDA(video_pagesize, rows * cols * 2); +} + + +/**************************************************************** + * Character writing + ****************************************************************/ + +// Scroll the screen one line. This function is designed to be called +// tail-recursive to reduce stack usage. +static void noinline +scroll_one(u16 nbrows, u16 nbcols, u8 page) +{ + struct cursorpos ul = {0, 0, page}; + struct cursorpos lr = {nbcols-1, nbrows-1, page}; + vgafb_scroll(1, -1, ul, lr); +} + +// Write a character to the screen at a given position. Implement +// special characters and scroll the screen if necessary. +static void +write_teletype(struct cursorpos *pcp, struct carattr ca) +{ + struct cursorpos cp = *pcp; + + // Get the dimensions + u16 nbrows = GET_BDA(video_rows) + 1; + u16 nbcols = GET_BDA(video_cols); + + switch (ca.car) { + case 7: + //FIXME should beep + break; + case 8: + if (cp.x > 0) + cp.x--; + break; + case '\r': + cp.x = 0; + break; + case '\n': + cp.y++; + break; + case '\t': + do { + struct carattr dummyca = {' ', ca.attr, ca.use_attr}; + vgafb_write_char(cp, dummyca); + cp.x++; + } while (cp.x < nbcols && cp.x % 8); + break; + default: + vgafb_write_char(cp, ca); + cp.x++; + } + + // Do we need to wrap ? + if (cp.x == nbcols) { + cp.x = 0; + cp.y++; + } + // Do we need to scroll ? + if (cp.y < nbrows) { + *pcp = cp; + return; + } + // Scroll screen + cp.y--; + *pcp = cp; + scroll_one(nbrows, nbcols, cp.page); +} + +// Write out a buffer of alternating characters and attributes. +static void +write_attr_string(struct cursorpos *pcp, u16 count, u16 seg, u8 *offset_far) +{ + while (count--) { + u8 car = GET_FARVAR(seg, *offset_far); + offset_far++; + u8 attr = GET_FARVAR(seg, *offset_far); + offset_far++; + + struct carattr ca = {car, attr, 1}; + write_teletype(pcp, ca); + } +} + +// Write out a buffer of characters. +static void +write_string(struct cursorpos *pcp, u8 attr, u16 count, u16 seg, u8 *offset_far) +{ + while (count--) { + u8 car = GET_FARVAR(seg, *offset_far); + offset_far++; + + struct carattr ca = {car, attr, 1}; + write_teletype(pcp, ca); + } +} + + +/**************************************************************** + * Save and restore bda state + ****************************************************************/ + +static void +save_bda_state(u16 seg, struct saveBDAstate *info) +{ + SET_FARVAR(seg, info->video_mode, GET_BDA(video_mode)); + SET_FARVAR(seg, info->video_cols, GET_BDA(video_cols)); + SET_FARVAR(seg, info->video_pagesize, GET_BDA(video_pagesize)); + SET_FARVAR(seg, info->crtc_address, GET_BDA(crtc_address)); + SET_FARVAR(seg, info->video_rows, GET_BDA(video_rows)); + SET_FARVAR(seg, info->char_height, GET_BDA(char_height)); + SET_FARVAR(seg, info->video_ctl, GET_BDA(video_ctl)); + SET_FARVAR(seg, info->video_switches, GET_BDA(video_switches)); + SET_FARVAR(seg, info->modeset_ctl, GET_BDA(modeset_ctl)); + SET_FARVAR(seg, info->cursor_type, GET_BDA(cursor_type)); + u16 i; + for (i=0; i<8; i++) + SET_FARVAR(seg, info->cursor_pos[i], GET_BDA(cursor_pos[i])); + SET_FARVAR(seg, info->video_pagestart, GET_BDA(video_pagestart)); + SET_FARVAR(seg, info->video_page, GET_BDA(video_page)); + /* current font */ + SET_FARVAR(seg, info->font0, GET_IVT(0x1f)); + SET_FARVAR(seg, info->font1, GET_IVT(0x43)); +} + +static void +restore_bda_state(u16 seg, struct saveBDAstate *info) +{ + SET_BDA(video_mode, GET_FARVAR(seg, info->video_mode)); + SET_BDA(video_cols, GET_FARVAR(seg, info->video_cols)); + SET_BDA(video_pagesize, GET_FARVAR(seg, info->video_pagesize)); + SET_BDA(crtc_address, GET_FARVAR(seg, info->crtc_address)); + SET_BDA(video_rows, GET_FARVAR(seg, info->video_rows)); + SET_BDA(char_height, GET_FARVAR(seg, info->char_height)); + SET_BDA(video_ctl, GET_FARVAR(seg, info->video_ctl)); + SET_BDA(video_switches, GET_FARVAR(seg, info->video_switches)); + SET_BDA(modeset_ctl, GET_FARVAR(seg, info->modeset_ctl)); + SET_BDA(cursor_type, GET_FARVAR(seg, info->cursor_type)); + u16 i; + for (i = 0; i < 8; i++) + SET_BDA(cursor_pos[i], GET_FARVAR(seg, info->cursor_pos[i])); + SET_BDA(video_pagestart, GET_FARVAR(seg, info->video_pagestart)); + SET_BDA(video_page, GET_FARVAR(seg, info->video_page)); + /* current font */ + SET_IVT(0x1f, GET_FARVAR(seg, info->font0)); + SET_IVT(0x43, GET_FARVAR(seg, info->font1)); +} + + +/**************************************************************** + * VGA int 10 handler + ****************************************************************/ + +// set video mode +void +vga_set_mode(u8 mode, u8 noclearmem) +{ + // find the entry in the video modes + struct vgamode_s *vmode_g = find_vga_entry(mode); + dprintf(1, "mode search %02x found %p\n", mode, vmode_g); + if (!vmode_g) + return; + + // Read the bios mode set control + u8 modeset_ctl = GET_BDA(modeset_ctl); + + // Then we know the number of lines +// FIXME + + // if palette loading (bit 3 of modeset ctl = 0) + if ((modeset_ctl & 0x08) == 0) { // Set the PEL mask + vgahw_set_pel_mask(GET_GLOBAL(vmode_g->pelmask)); + + // From which palette + u8 *palette_g = GET_GLOBAL(vmode_g->dac); + u16 palsize = GET_GLOBAL(vmode_g->dacsize) / 3; + + // Always 256*3 values + vgahw_set_dac_regs(get_global_seg(), palette_g, 0, palsize); + u16 i; + for (i = palsize; i < 0x0100; i++) { + static u8 rgb[3] VAR16; + vgahw_set_dac_regs(get_global_seg(), rgb, i, 1); + } + + if ((modeset_ctl & 0x02) == 0x02) + perform_gray_scale_summing(0x00, 0x100); + } + + vgahw_set_mode(vmode_g); + + if (noclearmem == 0x00) + clear_screen(vmode_g); + + // Set CRTC address VGA or MDA + u16 crtc_addr = VGAREG_VGA_CRTC_ADDRESS; + if (GET_GLOBAL(vmode_g->memmodel) == MTEXT) + crtc_addr = VGAREG_MDA_CRTC_ADDRESS; + + // Set the BIOS mem + u16 cheight = GET_GLOBAL(vmode_g->cheight); + SET_BDA(video_mode, mode); + SET_BDA(video_cols, GET_GLOBAL(vmode_g->twidth)); + SET_BDA(video_pagesize, GET_GLOBAL(vmode_g->slength)); + SET_BDA(crtc_address, crtc_addr); + SET_BDA(video_rows, GET_GLOBAL(vmode_g->theight)-1); + SET_BDA(char_height, cheight); + SET_BDA(video_ctl, (0x60 | noclearmem)); + SET_BDA(video_switches, 0xF9); + SET_BDA(modeset_ctl, GET_BDA(modeset_ctl) & 0x7f); + + // FIXME We nearly have the good tables. to be reworked + SET_BDA(dcc_index, 0x08); // 8 is VGA should be ok for now + SET_BDA(video_savetable + , SEGOFF(get_global_seg(), (u32)&video_save_pointer_table)); + + // FIXME + SET_BDA(video_msr, 0x00); // Unavailable on vanilla vga, but... + SET_BDA(video_pal, 0x00); // Unavailable on vanilla vga, but... + + // Set cursor shape + if (GET_GLOBAL(vmode_g->memmodel) & TEXT) + set_cursor_shape(0x06, 0x07); + // Set cursor pos for page 0..7 + int i; + for (i = 0; i < 8; i++) { + struct cursorpos cp = {0, 0, i}; + set_cursor_pos(cp); + } + + // Set active page 0 + set_active_page(0x00); + + // Write the fonts in memory + if (GET_GLOBAL(vmode_g->memmodel) & TEXT) { + call16_vgaint(0x1104, 0); + call16_vgaint(0x1103, 0); + } + // Set the ints 0x1F and 0x43 + SET_IVT(0x1f, SEGOFF(get_global_seg(), (u32)&vgafont8[128 * 8])); + + switch (cheight) { + case 8: + SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont8)); + break; + case 14: + SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont14)); + break; + case 16: + SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont16)); + break; + } +} + +static void +handle_1000(struct bregs *regs) +{ + u8 noclearmem = regs->al & 0x80; + u8 mode = regs->al & 0x7f; + + // Set regs->al + if (mode > 7) + regs->al = 0x20; + else if (mode == 6) + regs->al = 0x3f; + else + regs->al = 0x30; + + if (CONFIG_VGA_CIRRUS) { + int ret = cirrus_set_video_mode(mode, noclearmem); + if (ret) + return; + } + + if (bochsvga_enabled()) + bochsvga_hires_enable(0); + + vga_set_mode(mode, noclearmem); +} + +static void +handle_1001(struct bregs *regs) +{ + set_cursor_shape(regs->ch, regs->cl); +} + +static void +handle_1002(struct bregs *regs) +{ + struct cursorpos cp = {regs->dl, regs->dh, regs->bh}; + set_cursor_pos(cp); +} + +static void +handle_1003(struct bregs *regs) +{ + regs->cx = get_cursor_shape(regs->bh); + struct cursorpos cp = get_cursor_pos(regs->bh); + regs->dl = cp.x; + regs->dh = cp.y; +} + +// Read light pen pos (unimplemented) +static void +handle_1004(struct bregs *regs) +{ + debug_stub(regs); + regs->ax = regs->bx = regs->cx = regs->dx = 0; +} + +static void +handle_1005(struct bregs *regs) +{ + set_active_page(regs->al); +} + +static void +verify_scroll(struct bregs *regs, int dir) +{ + u8 page = GET_BDA(video_page); + struct cursorpos ul = {regs->cl, regs->ch, page}; + struct cursorpos lr = {regs->dl, regs->dh, page}; + + u16 nbrows = GET_BDA(video_rows) + 1; + if (lr.y >= nbrows) + lr.y = nbrows - 1; + u16 nbcols = GET_BDA(video_cols); + if (lr.x >= nbcols) + lr.x = nbcols - 1; + + if (ul.x > lr.x || ul.y > lr.y) + return; + + u16 nblines = regs->al; + if (!nblines || nblines > lr.y - ul.y + 1) + nblines = lr.y - ul.y + 1; + + vgafb_scroll(dir * nblines, regs->bh, ul, lr); +} + +static void +handle_1006(struct bregs *regs) +{ + verify_scroll(regs, 1); +} + +static void +handle_1007(struct bregs *regs) +{ + verify_scroll(regs, -1); +} + +static void +handle_1008(struct bregs *regs) +{ + struct carattr ca = vgafb_read_char(get_cursor_pos(regs->bh)); + regs->al = ca.car; + regs->ah = ca.attr; +} + +static void noinline +write_chars(u8 page, struct carattr ca, u16 count) +{ + struct cursorpos cp = get_cursor_pos(page); + while (count--) { + vgafb_write_char(cp, ca); + cp.x++; + } +} + +static void +handle_1009(struct bregs *regs) +{ + struct carattr ca = {regs->al, regs->bl, 1}; + write_chars(regs->bh, ca, regs->cx); +} + +static void +handle_100a(struct bregs *regs) +{ + struct carattr ca = {regs->al, regs->bl, 0}; + write_chars(regs->bh, ca, regs->cx); +} + + +static void +handle_100b00(struct bregs *regs) +{ + vgahw_set_border_color(regs->bl); +} + +static void +handle_100b01(struct bregs *regs) +{ + vgahw_set_palette(regs->bl); +} + +static void +handle_100bXX(struct bregs *regs) +{ + debug_stub(regs); +} + +static void +handle_100b(struct bregs *regs) +{ + switch (regs->bh) { + case 0x00: handle_100b00(regs); break; + case 0x01: handle_100b01(regs); break; + default: handle_100bXX(regs); break; + } +} + + +static void +handle_100c(struct bregs *regs) +{ + // XXX - page (regs->bh) is unused + vgafb_write_pixel(regs->al, regs->cx, regs->dx); +} + +static void +handle_100d(struct bregs *regs) +{ + // XXX - page (regs->bh) is unused + regs->al = vgafb_read_pixel(regs->cx, regs->dx); +} + +static void noinline +handle_100e(struct bregs *regs) +{ + // Ralf Brown Interrupt list is WRONG on bh(page) + // We do output only on the current page ! + struct carattr ca = {regs->al, regs->bl, 0}; + struct cursorpos cp = get_cursor_pos(0xff); + write_teletype(&cp, ca); + set_cursor_pos(cp); +} + +static void +handle_100f(struct bregs *regs) +{ + regs->bh = GET_BDA(video_page); + regs->al = GET_BDA(video_mode) | (GET_BDA(video_ctl) & 0x80); + regs->ah = GET_BDA(video_cols); +} + + +static void +handle_101000(struct bregs *regs) +{ + if (regs->bl > 0x14) + return; + vgahw_set_single_palette_reg(regs->bl, regs->bh); +} + +static void +handle_101001(struct bregs *regs) +{ + vgahw_set_overscan_border_color(regs->bh); +} + +static void +handle_101002(struct bregs *regs) +{ + vgahw_set_all_palette_reg(regs->es, (u8*)(regs->dx + 0)); +} + +static void +handle_101003(struct bregs *regs) +{ + vgahw_toggle_intensity(regs->bl); +} + +static void +handle_101007(struct bregs *regs) +{ + if (regs->bl > 0x14) + return; + regs->bh = vgahw_get_single_palette_reg(regs->bl); +} + +static void +handle_101008(struct bregs *regs) +{ + regs->bh = vgahw_get_overscan_border_color(); +} + +static void +handle_101009(struct bregs *regs) +{ + vgahw_get_all_palette_reg(regs->es, (u8*)(regs->dx + 0)); +} + +static void noinline +handle_101010(struct bregs *regs) +{ + u8 rgb[3] = {regs->dh, regs->ch, regs->cl}; + vgahw_set_dac_regs(GET_SEG(SS), rgb, regs->bx, 1); +} + +static void +handle_101012(struct bregs *regs) +{ + vgahw_set_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx); +} + +static void +handle_101013(struct bregs *regs) +{ + vgahw_select_video_dac_color_page(regs->bl, regs->bh); +} + +static void noinline +handle_101015(struct bregs *regs) +{ + u8 rgb[3]; + vgahw_get_dac_regs(GET_SEG(SS), rgb, regs->bx, 1); + regs->dh = rgb[0]; + regs->ch = rgb[1]; + regs->cl = rgb[2]; +} + +static void +handle_101017(struct bregs *regs) +{ + vgahw_get_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx); +} + +static void +handle_101018(struct bregs *regs) +{ + vgahw_set_pel_mask(regs->bl); +} + +static void +handle_101019(struct bregs *regs) +{ + regs->bl = vgahw_get_pel_mask(); +} + +static void +handle_10101a(struct bregs *regs) +{ + vgahw_read_video_dac_state(®s->bl, ®s->bh); +} + +static void +handle_10101b(struct bregs *regs) +{ + perform_gray_scale_summing(regs->bx, regs->cx); +} + +static void +handle_1010XX(struct bregs *regs) +{ + debug_stub(regs); +} + +static void +handle_1010(struct bregs *regs) +{ + switch (regs->al) { + case 0x00: handle_101000(regs); break; + case 0x01: handle_101001(regs); break; + case 0x02: handle_101002(regs); break; + case 0x03: handle_101003(regs); break; + case 0x07: handle_101007(regs); break; + case 0x08: handle_101008(regs); break; + case 0x09: handle_101009(regs); break; + case 0x10: handle_101010(regs); break; + case 0x12: handle_101012(regs); break; + case 0x13: handle_101013(regs); break; + case 0x15: handle_101015(regs); break; + case 0x17: handle_101017(regs); break; + case 0x18: handle_101018(regs); break; + case 0x19: handle_101019(regs); break; + case 0x1a: handle_10101a(regs); break; + case 0x1b: handle_10101b(regs); break; + default: handle_1010XX(regs); break; + } +} + + +static void +handle_101100(struct bregs *regs) +{ + vgafb_load_font(regs->es, (void*)(regs->bp+0), regs->cx + , regs->dx, regs->bl, regs->bh); +} + +static void +handle_101101(struct bregs *regs) +{ + vgafb_load_font(get_global_seg(), vgafont14, 0x100, 0, regs->bl, 14); +} + +static void +handle_101102(struct bregs *regs) +{ + vgafb_load_font(get_global_seg(), vgafont8, 0x100, 0, regs->bl, 8); +} + +static void +handle_101103(struct bregs *regs) +{ + vgahw_set_text_block_specifier(regs->bl); +} + +static void +handle_101104(struct bregs *regs) +{ + vgafb_load_font(get_global_seg(), vgafont16, 0x100, 0, regs->bl, 16); +} + +static void +handle_101110(struct bregs *regs) +{ + vgafb_load_font(regs->es, (void*)(regs->bp+0), regs->cx + , regs->dx, regs->bl, regs->bh); + set_scan_lines(regs->bh); +} + +static void +handle_101111(struct bregs *regs) +{ + vgafb_load_font(get_global_seg(), vgafont14, 0x100, 0, regs->bl, 14); + set_scan_lines(14); +} + +static void +handle_101112(struct bregs *regs) +{ + vgafb_load_font(get_global_seg(), vgafont8, 0x100, 0, regs->bl, 8); + set_scan_lines(8); +} + +static void +handle_101114(struct bregs *regs) +{ + vgafb_load_font(get_global_seg(), vgafont16, 0x100, 0, regs->bl, 16); + set_scan_lines(16); +} + +static void +handle_101130(struct bregs *regs) +{ + switch (regs->bh) { + case 0x00: { + struct segoff_s so = GET_IVT(0x1f); + regs->es = so.seg; + regs->bp = so.offset; + break; + } + case 0x01: { + struct segoff_s so = GET_IVT(0x43); + regs->es = so.seg; + regs->bp = so.offset; + break; + } + case 0x02: + regs->es = get_global_seg(); + regs->bp = (u32)vgafont14; + break; + case 0x03: + regs->es = get_global_seg(); + regs->bp = (u32)vgafont8; + break; + case 0x04: + regs->es = get_global_seg(); + regs->bp = (u32)vgafont8 + 128 * 8; + break; + case 0x05: + regs->es = get_global_seg(); + regs->bp = (u32)vgafont14alt; + break; + case 0x06: + regs->es = get_global_seg(); + regs->bp = (u32)vgafont16; + break; + case 0x07: + regs->es = get_global_seg(); + regs->bp = (u32)vgafont16alt; + break; + default: + dprintf(1, "Get font info BH(%02x) was discarded\n", regs->bh); + return; + } + // Set byte/char of on screen font + regs->cx = GET_BDA(char_height) & 0xff; + + // Set Highest char row + regs->dx = GET_BDA(video_rows); +} + +static void +handle_1011XX(struct bregs *regs) +{ + debug_stub(regs); +} + +static void +handle_1011(struct bregs *regs) +{ + switch (regs->al) { + case 0x00: handle_101100(regs); break; + case 0x01: handle_101101(regs); break; + case 0x02: handle_101102(regs); break; + case 0x03: handle_101103(regs); break; + case 0x04: handle_101104(regs); break; + case 0x10: handle_101110(regs); break; + case 0x11: handle_101111(regs); break; + case 0x12: handle_101112(regs); break; + case 0x14: handle_101114(regs); break; + case 0x30: handle_101130(regs); break; + default: handle_1011XX(regs); break; + } +} + + +static void +handle_101210(struct bregs *regs) +{ + u16 crtc_addr = GET_BDA(crtc_address); + if (crtc_addr == VGAREG_MDA_CRTC_ADDRESS) + regs->bx = 0x0103; + else + regs->bx = 0x0003; + regs->cx = GET_BDA(video_switches) & 0x0f; +} + +static void +handle_101230(struct bregs *regs) +{ + u8 mctl = GET_BDA(modeset_ctl); + u8 vswt = GET_BDA(video_switches); + switch (regs->al) { + case 0x00: + // 200 lines + mctl = (mctl & ~0x10) | 0x80; + vswt = (vswt & ~0x0f) | 0x08; + break; + case 0x01: + // 350 lines + mctl &= ~0x90; + vswt = (vswt & ~0x0f) | 0x09; + break; + case 0x02: + // 400 lines + mctl = (mctl & ~0x80) | 0x10; + vswt = (vswt & ~0x0f) | 0x09; + break; + default: + dprintf(1, "Select vert res (%02x) was discarded\n", regs->al); + break; + } + SET_BDA(modeset_ctl, mctl); + SET_BDA(video_switches, vswt); + regs->al = 0x12; +} + +static void +handle_101231(struct bregs *regs) +{ + u8 v = (regs->al & 0x01) << 3; + u8 mctl = GET_BDA(video_ctl) & ~0x08; + SET_BDA(video_ctl, mctl | v); + regs->al = 0x12; +} + +static void +handle_101232(struct bregs *regs) +{ + vgahw_enable_video_addressing(regs->al); + regs->al = 0x12; +} + +static void +handle_101233(struct bregs *regs) +{ + u8 v = ((regs->al << 1) & 0x02) ^ 0x02; + u8 v2 = GET_BDA(modeset_ctl) & ~0x02; + SET_BDA(modeset_ctl, v | v2); + regs->al = 0x12; +} + +static void +handle_101234(struct bregs *regs) +{ + u8 v = (regs->al & 0x01) ^ 0x01; + u8 v2 = GET_BDA(modeset_ctl) & ~0x01; + SET_BDA(modeset_ctl, v | v2); + regs->al = 0x12; +} + +static void +handle_101235(struct bregs *regs) +{ + debug_stub(regs); + regs->al = 0x12; +} + +static void +handle_101236(struct bregs *regs) +{ + debug_stub(regs); + regs->al = 0x12; +} + +static void +handle_1012XX(struct bregs *regs) +{ + debug_stub(regs); +} + +static void +handle_1012(struct bregs *regs) +{ + switch (regs->bl) { + case 0x10: handle_101210(regs); break; + case 0x30: handle_101230(regs); break; + case 0x31: handle_101231(regs); break; + case 0x32: handle_101232(regs); break; + case 0x33: handle_101233(regs); break; + case 0x34: handle_101234(regs); break; + case 0x35: handle_101235(regs); break; + case 0x36: handle_101236(regs); break; + default: handle_1012XX(regs); break; + } + + // XXX - cirrus has 1280, 1281, 1282, 1285, 129a, 12a0, 12a1, 12a2, 12ae +} + + +// Write string +static void noinline +handle_1013(struct bregs *regs) +{ + struct cursorpos cp = {regs->dl, regs->dh, regs->bh}; + // if row=0xff special case : use current cursor position + if (cp.y == 0xff) + cp = get_cursor_pos(cp.page); + u8 flag = regs->al; + if (flag & 2) + write_attr_string(&cp, regs->cx, regs->es, (void*)(regs->bp + 0)); + else + write_string(&cp, regs->bl, regs->cx, regs->es, (void*)(regs->bp + 0)); + + if (flag & 1) + set_cursor_pos(cp); +} + + +static void +handle_101a00(struct bregs *regs) +{ + regs->bx = GET_BDA(dcc_index); + regs->al = 0x1a; +} + +static void +handle_101a01(struct bregs *regs) +{ + SET_BDA(dcc_index, regs->bl); + dprintf(1, "Alternate Display code (%02x) was discarded\n", regs->bh); + regs->al = 0x1a; +} + +static void +handle_101aXX(struct bregs *regs) +{ + debug_stub(regs); +} + +static void +handle_101a(struct bregs *regs) +{ + switch (regs->al) { + case 0x00: handle_101a00(regs); break; + case 0x01: handle_101a01(regs); break; + default: handle_101aXX(regs); break; + } +} + + +struct funcInfo { + struct segoff_s static_functionality; + u8 bda_0x49[30]; + u8 bda_0x84[3]; + u8 dcc_index; + u8 dcc_alt; + u16 colors; + u8 pages; + u8 scan_lines; + u8 primary_char; + u8 secondar_char; + u8 misc; + u8 non_vga_mode; + u8 reserved_2f[2]; + u8 video_mem; + u8 save_flags; + u8 disp_info; + u8 reserved_34[12]; +}; + +static void +handle_101b(struct bregs *regs) +{ + u16 seg = regs->es; + struct funcInfo *info = (void*)(regs->di+0); + memset_far(seg, info, 0, sizeof(*info)); + // Address of static functionality table + SET_FARVAR(seg, info->static_functionality + , SEGOFF(get_global_seg(), (u32)static_functionality)); + + // Hard coded copy from BIOS area. Should it be cleaner ? + memcpy_far(seg, info->bda_0x49, SEG_BDA, (void*)0x49 + , sizeof(info->bda_0x49)); + memcpy_far(seg, info->bda_0x84, SEG_BDA, (void*)0x84 + , sizeof(info->bda_0x84)); + + SET_FARVAR(seg, info->dcc_index, GET_BDA(dcc_index)); + SET_FARVAR(seg, info->colors, 16); + SET_FARVAR(seg, info->pages, 8); + SET_FARVAR(seg, info->scan_lines, 2); + SET_FARVAR(seg, info->video_mem, 3); + regs->al = 0x1B; +} + + +static void +handle_101c00(struct bregs *regs) +{ + u16 flags = regs->cx; + u16 size = 0; + if (flags & 1) + size += sizeof(struct saveVideoHardware); + if (flags & 2) + size += sizeof(struct saveBDAstate); + if (flags & 4) + size += sizeof(struct saveDACcolors); + regs->bx = size; + regs->al = 0x1c; +} + +static void +handle_101c01(struct bregs *regs) +{ + u16 flags = regs->cx; + u16 seg = regs->es; + void *data = (void*)(regs->bx+0); + if (flags & 1) { + vgahw_save_state(seg, data); + data += sizeof(struct saveVideoHardware); + } + if (flags & 2) { + save_bda_state(seg, data); + data += sizeof(struct saveBDAstate); + } + if (flags & 4) + vgahw_save_dac_state(seg, data); + regs->al = 0x1c; +} + +static void +handle_101c02(struct bregs *regs) +{ + u16 flags = regs->cx; + u16 seg = regs->es; + void *data = (void*)(regs->bx+0); + if (flags & 1) { + vgahw_restore_state(seg, data); + data += sizeof(struct saveVideoHardware); + } + if (flags & 2) { + restore_bda_state(seg, data); + data += sizeof(struct saveBDAstate); + } + if (flags & 4) + vgahw_restore_dac_state(seg, data); + regs->al = 0x1c; +} + +static void +handle_101cXX(struct bregs *regs) +{ + debug_stub(regs); +} + +static void +handle_101c(struct bregs *regs) +{ + switch (regs->al) { + case 0x00: handle_101c00(regs); break; + case 0x01: handle_101c01(regs); break; + case 0x02: handle_101c02(regs); break; + default: handle_101cXX(regs); break; + } +} + +static void +handle_104f00(struct bregs *regs) +{ + u16 seg = regs->es; + struct vbe_info *info = (void*)(regs->di+0); + + if (GET_FARVAR(seg, info->signature) == VBE2_SIGNATURE) { + dprintf(4, "Get VBE Controller: VBE2 Signature found\n"); + } else if (GET_FARVAR(seg, info->signature) == VESA_SIGNATURE) { + dprintf(4, "Get VBE Controller: VESA Signature found\n"); + } else { + dprintf(4, "Get VBE Controller: Invalid Signature\n"); + } + + memset_far(seg, info, 0, sizeof(*info)); + + SET_FARVAR(seg, info->signature, VESA_SIGNATURE); + + SET_FARVAR(seg, info->version, 0x0200); + + SET_FARVAR(seg, info->oem_string, + SEGOFF(get_global_seg(), (u32)VBE_OEM_STRING)); + SET_FARVAR(seg, info->capabilities, 0x1); /* 8BIT DAC */ + + /* We generate our mode list in the reserved field of the info block */ + SET_FARVAR(seg, info->video_mode, SEGOFF(seg, regs->di + 34)); + + /* Total memory (in 64 blocks) */ + SET_FARVAR(seg, info->total_memory, bochsvga_total_mem()); + + SET_FARVAR(seg, info->oem_vendor_string, + SEGOFF(get_global_seg(), (u32)VBE_VENDOR_STRING)); + SET_FARVAR(seg, info->oem_product_string, + SEGOFF(get_global_seg(), (u32)VBE_PRODUCT_STRING)); + SET_FARVAR(seg, info->oem_revision_string, + SEGOFF(get_global_seg(), (u32)VBE_REVISION_STRING)); + + /* Fill list of modes */ + bochsvga_list_modes(seg, regs->di + 32); + + regs->al = regs->ah; /* 0x4F, Function supported */ + regs->ah = 0x0; /* 0x0, Function call successful */ +} + +static void +handle_104f01(struct bregs *regs) +{ + u16 seg = regs->es; + struct vbe_mode_info *info = (void*)(regs->di+0); + u16 mode = regs->cx; + struct vbe_modeinfo modeinfo; + int rc; + + dprintf(1, "VBE mode info request: %x\n", mode); + + rc = bochsvga_mode_info(mode, &modeinfo); + if (rc) { + dprintf(1, "VBE mode %x not found\n", mode); + regs->ax = 0x100; + return; + } + + u16 mode_attr = VBE_MODE_ATTRIBUTE_SUPPORTED | + VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE | + VBE_MODE_ATTRIBUTE_COLOR_MODE | + VBE_MODE_ATTRIBUTE_GRAPHICS_MODE; + if (modeinfo.depth == 4) + mode_attr |= VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT; + else + mode_attr |= VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE; + SET_FARVAR(seg, info->mode_attributes, mode_attr); + SET_FARVAR(seg, info->winA_attributes, + VBE_WINDOW_ATTRIBUTE_RELOCATABLE | + VBE_WINDOW_ATTRIBUTE_READABLE | + VBE_WINDOW_ATTRIBUTE_WRITEABLE); + SET_FARVAR(seg, info->winB_attributes, 0); + SET_FARVAR(seg, info->win_granularity, 64); /* Bank size 64K */ + SET_FARVAR(seg, info->win_size, 64); /* Bank size 64K */ + SET_FARVAR(seg, info->winA_seg, 0xA000); + SET_FARVAR(seg, info->winB_seg, 0x0); + SET_FARVAR(seg, info->win_func_ptr.segoff, 0x0); + SET_FARVAR(seg, info->bytes_per_scanline, modeinfo.linesize); + SET_FARVAR(seg, info->xres, modeinfo.width); + SET_FARVAR(seg, info->yres, modeinfo.height); + SET_FARVAR(seg, info->xcharsize, 8); + SET_FARVAR(seg, info->ycharsize, 16); + if (modeinfo.depth == 4) + SET_FARVAR(seg, info->planes, 4); + else + SET_FARVAR(seg, info->planes, 1); + SET_FARVAR(seg, info->bits_per_pixel, modeinfo.depth); + SET_FARVAR(seg, info->banks, + (modeinfo.linesize * modeinfo.height + 65535) / 65536); + if (modeinfo.depth == 4) + SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PLANAR); + else if (modeinfo.depth == 8) + SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PACKED_PIXEL); + else + SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_DIRECT_COLOR); + SET_FARVAR(seg, info->bank_size, 0); + u32 pages = modeinfo.vram_size / (modeinfo.height * modeinfo.linesize); + if (modeinfo.depth == 4) + SET_FARVAR(seg, info->pages, (pages / 4) - 1); + else + SET_FARVAR(seg, info->pages, pages - 1); + SET_FARVAR(seg, info->reserved0, 1); + + u8 r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos; + + switch (modeinfo.depth) { + case 15: r_size = 5; r_pos = 10; g_size = 5; g_pos = 5; + b_size = 5; b_pos = 0; a_size = 1; a_pos = 15; break; + case 16: r_size = 5; r_pos = 11; g_size = 6; g_pos = 5; + b_size = 5; b_pos = 0; a_size = 0; a_pos = 0; break; + case 24: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8; + b_size = 8; b_pos = 0; a_size = 0; a_pos = 0; break; + case 32: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8; + b_size = 8; b_pos = 0; a_size = 8; a_pos = 24; break; + default: r_size = 0; r_pos = 0; g_size = 0; g_pos = 0; + b_size = 0; b_pos = 0; a_size = 0; a_pos = 0; break; + } + + SET_FARVAR(seg, info->red_size, r_size); + SET_FARVAR(seg, info->red_pos, r_pos); + SET_FARVAR(seg, info->green_size, g_size); + SET_FARVAR(seg, info->green_pos, g_pos); + SET_FARVAR(seg, info->blue_size, b_size); + SET_FARVAR(seg, info->blue_pos, b_pos); + SET_FARVAR(seg, info->alpha_size, a_size); + SET_FARVAR(seg, info->alpha_pos, a_pos); + + if (modeinfo.depth == 32) + SET_FARVAR(seg, info->directcolor_info, + VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE); + else + SET_FARVAR(seg, info->directcolor_info, 0); + + if (modeinfo.depth > 4) + SET_FARVAR(seg, info->phys_base, modeinfo.phys_base); + else + SET_FARVAR(seg, info->phys_base, 0); + + SET_FARVAR(seg, info->reserved1, 0); + SET_FARVAR(seg, info->reserved2, 0); + SET_FARVAR(seg, info->linear_bytes_per_scanline, modeinfo.linesize); + SET_FARVAR(seg, info->bank_pages, 0); + SET_FARVAR(seg, info->linear_pages, 0); + SET_FARVAR(seg, info->linear_red_size, r_size); + SET_FARVAR(seg, info->linear_red_pos, r_pos); + SET_FARVAR(seg, info->linear_green_size, g_size); + SET_FARVAR(seg, info->linear_green_pos, g_pos); + SET_FARVAR(seg, info->linear_blue_size, b_size); + SET_FARVAR(seg, info->linear_blue_pos, b_pos); + SET_FARVAR(seg, info->linear_alpha_size, a_size); + SET_FARVAR(seg, info->linear_alpha_pos, a_pos); + SET_FARVAR(seg, info->pixclock_max, 0); + + regs->al = regs->ah; /* 0x4F, Function supported */ + regs->ah = 0x0; /* 0x0, Function call successful */ +} + +static void +handle_104f02(struct bregs *regs) +{ + //u16 seg = regs->es; + //struct vbe_crtc_info *crtc_info = (void*)(regs->di+0); + u16 mode = regs->bx; + struct vbe_modeinfo modeinfo; + int rc; + + dprintf(1, "VBE mode set: %x\n", mode); + + if (mode < 0x100) { /* VGA */ + dprintf(1, "set VGA mode %x\n", mode); + + bochsvga_hires_enable(0); + vga_set_mode(mode, 0); + } else { /* VBE */ + rc = bochsvga_mode_info(mode & 0x1ff, &modeinfo); + if (rc) { + dprintf(1, "VBE mode %x not found\n", mode & 0x1ff); + regs->ax = 0x100; + return; + } + bochsvga_hires_enable(1); + bochsvga_set_mode(mode & 0x1ff, &modeinfo); + + if (mode & 0x4000) { + /* Linear frame buffer */ + /* XXX: ??? */ + } + if (!(mode & 0x8000)) { + bochsvga_clear_scr(); + } + } + + regs->al = regs->ah; /* 0x4F, Function supported */ + regs->ah = 0x0; /* 0x0, Function call successful */ +} + +static void +handle_104f03(struct bregs *regs) +{ + if (!bochsvga_hires_enabled()) { + regs->bx = GET_BDA(video_mode); + } else { + regs->bx = bochsvga_curr_mode(); + } + + dprintf(1, "VBE current mode=%x\n", regs->bx); + + regs->al = regs->ah; /* 0x4F, Function supported */ + regs->ah = 0x0; /* 0x0, Function call successful */ +} + +static void +handle_104f04(struct bregs *regs) +{ + debug_enter(regs, DEBUG_VGA_10); + regs->ax = 0x0100; +} + +static void +handle_104f05(struct bregs *regs) +{ + debug_enter(regs, DEBUG_VGA_10); + regs->ax = 0x0100; +} + +static void +handle_104f06(struct bregs *regs) +{ + debug_enter(regs, DEBUG_VGA_10); + regs->ax = 0x0100; +} + +static void +handle_104f07(struct bregs *regs) +{ + debug_enter(regs, DEBUG_VGA_10); + regs->ax = 0x0100; +} + +static void +handle_104f08(struct bregs *regs) +{ + debug_enter(regs, DEBUG_VGA_10); + regs->ax = 0x0100; +} + +static void +handle_104f0a(struct bregs *regs) +{ + debug_enter(regs, DEBUG_VGA_10); + regs->ax = 0x0100; +} + +static void +handle_104fXX(struct bregs *regs) +{ + debug_stub(regs); + regs->ax = 0x0100; +} + +static void +handle_104f(struct bregs *regs) +{ + if (!bochsvga_enabled()) { + handle_104fXX(regs); + return; + } + + switch (regs->al) { + case 0x00: handle_104f00(regs); break; + case 0x01: handle_104f01(regs); break; + case 0x02: handle_104f02(regs); break; + case 0x03: handle_104f03(regs); break; + case 0x04: handle_104f04(regs); break; + case 0x05: handle_104f05(regs); break; + case 0x06: handle_104f06(regs); break; + case 0x07: handle_104f07(regs); break; + case 0x08: handle_104f08(regs); break; + case 0x0a: handle_104f0a(regs); break; + default: handle_104fXX(regs); break; + } +} + + +static void +handle_10XX(struct bregs *regs) +{ + debug_stub(regs); +} + +// INT 10h Video Support Service Entry Point +void VISIBLE16 +handle_10(struct bregs *regs) +{ + debug_enter(regs, DEBUG_VGA_10); + switch (regs->ah) { + case 0x00: handle_1000(regs); break; + case 0x01: handle_1001(regs); break; + case 0x02: handle_1002(regs); break; + case 0x03: handle_1003(regs); break; + case 0x04: handle_1004(regs); break; + case 0x05: handle_1005(regs); break; + case 0x06: handle_1006(regs); break; + case 0x07: handle_1007(regs); break; + case 0x08: handle_1008(regs); break; + case 0x09: handle_1009(regs); break; + case 0x0a: handle_100a(regs); break; + case 0x0b: handle_100b(regs); break; + case 0x0c: handle_100c(regs); break; + case 0x0d: handle_100d(regs); break; + case 0x0e: handle_100e(regs); break; + case 0x0f: handle_100f(regs); break; + case 0x10: handle_1010(regs); break; + case 0x11: handle_1011(regs); break; + case 0x12: handle_1012(regs); break; + case 0x13: handle_1013(regs); break; + case 0x1a: handle_101a(regs); break; + case 0x1b: handle_101b(regs); break; + case 0x1c: handle_101c(regs); break; + case 0x4f: handle_104f(regs); break; + default: handle_10XX(regs); break; + } +} + + +/**************************************************************** + * VGA post + ****************************************************************/ + +static void +init_bios_area(void) +{ + // init detected hardware BIOS Area + // set 80x25 color (not clear from RBIL but usual) + u16 eqf = GET_BDA(equipment_list_flags); + SET_BDA(equipment_list_flags, (eqf & 0xffcf) | 0x20); + + // Just for the first int10 find its children + + // the default char height + SET_BDA(char_height, 0x10); + + // Clear the screen + SET_BDA(video_ctl, 0x60); + + // Set the basic screen we have + SET_BDA(video_switches, 0xf9); + + // Set the basic modeset options + SET_BDA(modeset_ctl, 0x51); + + // Set the default MSR + SET_BDA(video_msr, 0x09); +} + +void VISIBLE16 +vga_post(struct bregs *regs) +{ + debug_enter(regs, DEBUG_VGA_POST); + + vgahw_init(); + + if (CONFIG_VGA_GEODELX) + geodelx_init(); + + init_bios_area(); + + bochsvga_init(regs->ah, regs->al); + + extern void entry_10(void); + SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10)); + + if (CONFIG_VGA_CIRRUS) + cirrus_init(); + + // XXX - clear screen and display info + + build_video_param(); + + // Fixup checksum + extern u8 _rom_header_size, _rom_header_checksum; + SET_VGA(_rom_header_checksum, 0); + u8 sum = -checksum_far(get_global_seg(), 0, _rom_header_size * 512); + SET_VGA(_rom_header_checksum, sum); +} diff --git a/vgasrc/vgabios.h b/vgasrc/vgabios.h new file mode 100644 index 0000000..913dd88 --- /dev/null +++ b/vgasrc/vgabios.h @@ -0,0 +1,225 @@ +#ifndef __VGABIOS_H +#define __VGABIOS_H + +#include "types.h" // u8 +#include "farptr.h" // struct segoff_s + +/* + * + * VGA registers + * + */ +#define VGAREG_ACTL_ADDRESS 0x3c0 +#define VGAREG_ACTL_WRITE_DATA 0x3c0 +#define VGAREG_ACTL_READ_DATA 0x3c1 + +#define VGAREG_INPUT_STATUS 0x3c2 +#define VGAREG_WRITE_MISC_OUTPUT 0x3c2 +#define VGAREG_VIDEO_ENABLE 0x3c3 +#define VGAREG_SEQU_ADDRESS 0x3c4 +#define VGAREG_SEQU_DATA 0x3c5 + +#define VGAREG_PEL_MASK 0x3c6 +#define VGAREG_DAC_STATE 0x3c7 +#define VGAREG_DAC_READ_ADDRESS 0x3c7 +#define VGAREG_DAC_WRITE_ADDRESS 0x3c8 +#define VGAREG_DAC_DATA 0x3c9 + +#define VGAREG_READ_FEATURE_CTL 0x3ca +#define VGAREG_READ_MISC_OUTPUT 0x3cc + +#define VGAREG_GRDC_ADDRESS 0x3ce +#define VGAREG_GRDC_DATA 0x3cf + +#define VGAREG_MDA_CRTC_ADDRESS 0x3b4 +#define VGAREG_MDA_CRTC_DATA 0x3b5 +#define VGAREG_VGA_CRTC_ADDRESS 0x3d4 +#define VGAREG_VGA_CRTC_DATA 0x3d5 + +#define VGAREG_MDA_WRITE_FEATURE_CTL 0x3ba +#define VGAREG_VGA_WRITE_FEATURE_CTL 0x3da +#define VGAREG_ACTL_RESET 0x3da + +#define VGAREG_MDA_MODECTL 0x3b8 +#define VGAREG_CGA_MODECTL 0x3d8 +#define VGAREG_CGA_PALETTE 0x3d9 + +/* Video memory */ +#define SEG_GRAPH 0xA000 +#define SEG_CTEXT 0xB800 +#define SEG_MTEXT 0xB000 + +/* + * Tables of default values for each mode + */ +#define TEXT 0x80 + +#define CTEXT (0x00 | TEXT) +#define MTEXT (0x01 | TEXT) +#define CGA 0x02 +#define PLANAR1 0x03 +#define PLANAR4 0x04 +#define LINEAR8 0x05 + +// for SVGA +#define LINEAR15 0x10 +#define LINEAR16 0x11 +#define LINEAR24 0x12 +#define LINEAR32 0x13 + +#define SCREEN_IO_START(x,y,p) (((((x)*(y)) | 0x00ff) + 1) * (p)) +#define SCREEN_MEM_START(x,y,p) SCREEN_IO_START(((x)*2),(y),(p)) + +struct vgamode_s { + u8 svgamode; + u8 memmodel; /* CTEXT,MTEXT,CGA,PL1,PL2,PL4,P8,P15,P16,P24,P32 */ + u8 twidth; + u8 theight; + u8 cheight; + u8 pixbits; + u16 sstart; + u16 slength; + + u8 pelmask; + u8 *dac; + u16 dacsize; + u8 *sequ_regs; + u8 miscreg; + u8 *crtc_regs; + u8 *actl_regs; + u8 *grdc_regs; +}; + +struct saveVideoHardware { + u8 sequ_index; + u8 crtc_index; + u8 grdc_index; + u8 actl_index; + u8 feature; + u8 sequ_regs[4]; + u8 sequ0; + u8 crtc_regs[25]; + u8 actl_regs[20]; + u8 grdc_regs[9]; + u16 crtc_addr; + u8 plane_latch[4]; +}; + +struct saveBDAstate { + u8 video_mode; + u16 video_cols; + u16 video_pagesize; + u16 crtc_address; + u8 video_rows; + u16 char_height; + u8 video_ctl; + u8 video_switches; + u8 modeset_ctl; + u16 cursor_type; + u16 cursor_pos[8]; + u16 video_pagestart; + u8 video_page; + /* current font */ + struct segoff_s font0; + struct segoff_s font1; +}; + +struct saveDACcolors { + u8 rwmode; + u8 peladdr; + u8 pelmask; + u8 dac[768]; + u8 color_select; +}; + +// vgatables.c +struct vgamode_s *find_vga_entry(u8 mode); +void build_video_param(void); +extern struct VideoSavePointer_s video_save_pointer_table; +extern u8 static_functionality[]; + +// vgafonts.c +extern u8 vgafont8[]; +extern u8 vgafont14[]; +extern u8 vgafont16[]; +extern u8 vgafont14alt[]; +extern u8 vgafont16alt[]; + +// vgabios.c +#define SET_VGA(var, val) SET_FARVAR(get_global_seg(), (var), (val)) +struct carattr { + u8 car, attr, use_attr; +}; +struct cursorpos { + u8 x, y, page; +}; +void vga_set_mode(u8 mode, u8 noclearmem); + +// vgafb.c +void clear_screen(struct vgamode_s *vmode_g); +void vgafb_scroll(int nblines, int attr + , struct cursorpos ul, struct cursorpos lr); +void vgafb_write_char(struct cursorpos cp, struct carattr ca); +struct carattr vgafb_read_char(struct cursorpos cp); +void vgafb_write_pixel(u8 color, u16 x, u16 y); +u8 vgafb_read_pixel(u16 x, u16 y); +void vgafb_load_font(u16 seg, void *src_far, u16 count + , u16 start, u8 destflags, u8 fontsize); + +// vgaio.c +void vgahw_screen_disable(void); +void vgahw_screen_enable(void); +void vgahw_set_border_color(u8 color); +void vgahw_set_overscan_border_color(u8 color); +u8 vgahw_get_overscan_border_color(void); +void vgahw_set_palette(u8 palid); +void vgahw_set_single_palette_reg(u8 reg, u8 val); +u8 vgahw_get_single_palette_reg(u8 reg); +void vgahw_set_all_palette_reg(u16 seg, u8 *data_far); +void vgahw_get_all_palette_reg(u16 seg, u8 *data_far); +void vgahw_toggle_intensity(u8 flag); +void vgahw_select_video_dac_color_page(u8 flag, u8 data); +void vgahw_read_video_dac_state(u8 *pmode, u8 *curpage); +void vgahw_set_dac_regs(u16 seg, u8 *data_far, u8 start, int count); +void vgahw_get_dac_regs(u16 seg, u8 *data_far, u8 start, int count); +void vgahw_set_pel_mask(u8 val); +u8 vgahw_get_pel_mask(void); +void vgahw_save_dac_state(u16 seg, struct saveDACcolors *info); +void vgahw_restore_dac_state(u16 seg, struct saveDACcolors *info); +void vgahw_sequ_write(u8 index, u8 value); +void vgahw_grdc_write(u8 index, u8 value); +void vgahw_set_text_block_specifier(u8 spec); +void get_font_access(void); +void release_font_access(void); +void vgahw_set_cursor_shape(u8 start, u8 end); +void vgahw_set_active_page(u16 address); +void vgahw_set_cursor_pos(u16 address); +void vgahw_set_scan_lines(u8 lines); +u16 vgahw_get_vde(void); +void vgahw_save_state(u16 seg, struct saveVideoHardware *info); +void vgahw_restore_state(u16 seg, struct saveVideoHardware *info); +void vgahw_set_mode(struct vgamode_s *vmode_g); +void vgahw_enable_video_addressing(u8 disable); +void vgahw_init(void); + +// clext.c +int cirrus_set_video_mode(u8 mode, u8 noclearmem); +void cirrus_init(void); + +// vbe.c +#define VBE_OEM_STRING "SeaBIOS VBE(C) 2011" +#define VBE_VENDOR_STRING "SeaBIOS Developers" +#define VBE_PRODUCT_STRING "SeaBIOS VBE Adapter" +#define VBE_REVISION_STRING "Rev. 1" + +struct vbe_modeinfo +{ + u16 width; + u16 height; + u8 depth; + u16 linesize; + u32 phys_base; + u32 vram_size; +}; + +#endif // vgabios.h diff --git a/vgasrc/vgafb.c b/vgasrc/vgafb.c index 1e1943d..f85cd28 100644 --- a/vgasrc/vgafb.c +++ b/vgasrc/vgafb.c @@ -7,7 +7,7 @@ #include "biosvar.h" // GET_BDA #include "util.h" // memset_far -#include "vgatables.h" // find_vga_entry +#include "vgabios.h" // find_vga_entry /**************************************************************** diff --git a/vgasrc/vgafonts.c b/vgasrc/vgafonts.c index 8c1752c..47a6437 100644 --- a/vgasrc/vgafonts.c +++ b/vgasrc/vgafonts.c @@ -1,4 +1,4 @@ -#include "vgatables.h" // vgafont8 +#include "vgabios.h" // vgafont8 /* * These fonts come from ftp://ftp.simtel.net/pub/simtelnet/msdos/screen/fntcol16.zip diff --git a/vgasrc/vgaio.c b/vgasrc/vgaio.c index 6154076..bc4c968 100644 --- a/vgasrc/vgaio.c +++ b/vgasrc/vgaio.c @@ -8,7 +8,7 @@ #include "ioport.h" // outb #include "farptr.h" // SET_FARVAR #include "biosvar.h" // GET_BDA -#include "vgatables.h" // VGAREG_* +#include "vgabios.h" // VGAREG_* // TODO // * replace direct in/out calls with wrapper functions diff --git a/vgasrc/vgatables.c b/vgasrc/vgatables.c index 47395f2..90ffa89 100644 --- a/vgasrc/vgatables.c +++ b/vgasrc/vgatables.c @@ -5,7 +5,7 @@ // // This file may be distributed under the terms of the GNU LGPLv3 license. -#include "vgatables.h" // struct VideoParamTableEntry_s +#include "vgabios.h" // struct VideoParamTableEntry_s #include "biosvar.h" // GET_GLOBAL #include "util.h" // memcpy_far diff --git a/vgasrc/vgatables.h b/vgasrc/vgatables.h deleted file mode 100644 index e0d61c9..0000000 --- a/vgasrc/vgatables.h +++ /dev/null @@ -1,225 +0,0 @@ -#ifndef __VGATABLES_H -#define __VGATABLES_H - -#include "types.h" // u8 -#include "farptr.h" // struct segoff_s - -/* - * - * VGA registers - * - */ -#define VGAREG_ACTL_ADDRESS 0x3c0 -#define VGAREG_ACTL_WRITE_DATA 0x3c0 -#define VGAREG_ACTL_READ_DATA 0x3c1 - -#define VGAREG_INPUT_STATUS 0x3c2 -#define VGAREG_WRITE_MISC_OUTPUT 0x3c2 -#define VGAREG_VIDEO_ENABLE 0x3c3 -#define VGAREG_SEQU_ADDRESS 0x3c4 -#define VGAREG_SEQU_DATA 0x3c5 - -#define VGAREG_PEL_MASK 0x3c6 -#define VGAREG_DAC_STATE 0x3c7 -#define VGAREG_DAC_READ_ADDRESS 0x3c7 -#define VGAREG_DAC_WRITE_ADDRESS 0x3c8 -#define VGAREG_DAC_DATA 0x3c9 - -#define VGAREG_READ_FEATURE_CTL 0x3ca -#define VGAREG_READ_MISC_OUTPUT 0x3cc - -#define VGAREG_GRDC_ADDRESS 0x3ce -#define VGAREG_GRDC_DATA 0x3cf - -#define VGAREG_MDA_CRTC_ADDRESS 0x3b4 -#define VGAREG_MDA_CRTC_DATA 0x3b5 -#define VGAREG_VGA_CRTC_ADDRESS 0x3d4 -#define VGAREG_VGA_CRTC_DATA 0x3d5 - -#define VGAREG_MDA_WRITE_FEATURE_CTL 0x3ba -#define VGAREG_VGA_WRITE_FEATURE_CTL 0x3da -#define VGAREG_ACTL_RESET 0x3da - -#define VGAREG_MDA_MODECTL 0x3b8 -#define VGAREG_CGA_MODECTL 0x3d8 -#define VGAREG_CGA_PALETTE 0x3d9 - -/* Video memory */ -#define SEG_GRAPH 0xA000 -#define SEG_CTEXT 0xB800 -#define SEG_MTEXT 0xB000 - -/* - * Tables of default values for each mode - */ -#define TEXT 0x80 - -#define CTEXT (0x00 | TEXT) -#define MTEXT (0x01 | TEXT) -#define CGA 0x02 -#define PLANAR1 0x03 -#define PLANAR4 0x04 -#define LINEAR8 0x05 - -// for SVGA -#define LINEAR15 0x10 -#define LINEAR16 0x11 -#define LINEAR24 0x12 -#define LINEAR32 0x13 - -#define SCREEN_IO_START(x,y,p) (((((x)*(y)) | 0x00ff) + 1) * (p)) -#define SCREEN_MEM_START(x,y,p) SCREEN_IO_START(((x)*2),(y),(p)) - -struct vgamode_s { - u8 svgamode; - u8 memmodel; /* CTEXT,MTEXT,CGA,PL1,PL2,PL4,P8,P15,P16,P24,P32 */ - u8 twidth; - u8 theight; - u8 cheight; - u8 pixbits; - u16 sstart; - u16 slength; - - u8 pelmask; - u8 *dac; - u16 dacsize; - u8 *sequ_regs; - u8 miscreg; - u8 *crtc_regs; - u8 *actl_regs; - u8 *grdc_regs; -}; - -struct saveVideoHardware { - u8 sequ_index; - u8 crtc_index; - u8 grdc_index; - u8 actl_index; - u8 feature; - u8 sequ_regs[4]; - u8 sequ0; - u8 crtc_regs[25]; - u8 actl_regs[20]; - u8 grdc_regs[9]; - u16 crtc_addr; - u8 plane_latch[4]; -}; - -struct saveBDAstate { - u8 video_mode; - u16 video_cols; - u16 video_pagesize; - u16 crtc_address; - u8 video_rows; - u16 char_height; - u8 video_ctl; - u8 video_switches; - u8 modeset_ctl; - u16 cursor_type; - u16 cursor_pos[8]; - u16 video_pagestart; - u8 video_page; - /* current font */ - struct segoff_s font0; - struct segoff_s font1; -}; - -struct saveDACcolors { - u8 rwmode; - u8 peladdr; - u8 pelmask; - u8 dac[768]; - u8 color_select; -}; - -// vgatables.c -struct vgamode_s *find_vga_entry(u8 mode); -void build_video_param(void); -extern struct VideoSavePointer_s video_save_pointer_table; -extern u8 static_functionality[]; - -// vgafonts.c -extern u8 vgafont8[]; -extern u8 vgafont14[]; -extern u8 vgafont16[]; -extern u8 vgafont14alt[]; -extern u8 vgafont16alt[]; - -// vga.c -#define SET_VGA(var, val) SET_FARVAR(get_global_seg(), (var), (val)) -struct carattr { - u8 car, attr, use_attr; -}; -struct cursorpos { - u8 x, y, page; -}; -void vga_set_mode(u8 mode, u8 noclearmem); - -// vgafb.c -void clear_screen(struct vgamode_s *vmode_g); -void vgafb_scroll(int nblines, int attr - , struct cursorpos ul, struct cursorpos lr); -void vgafb_write_char(struct cursorpos cp, struct carattr ca); -struct carattr vgafb_read_char(struct cursorpos cp); -void vgafb_write_pixel(u8 color, u16 x, u16 y); -u8 vgafb_read_pixel(u16 x, u16 y); -void vgafb_load_font(u16 seg, void *src_far, u16 count - , u16 start, u8 destflags, u8 fontsize); - -// vgaio.c -void vgahw_screen_disable(void); -void vgahw_screen_enable(void); -void vgahw_set_border_color(u8 color); -void vgahw_set_overscan_border_color(u8 color); -u8 vgahw_get_overscan_border_color(void); -void vgahw_set_palette(u8 palid); -void vgahw_set_single_palette_reg(u8 reg, u8 val); -u8 vgahw_get_single_palette_reg(u8 reg); -void vgahw_set_all_palette_reg(u16 seg, u8 *data_far); -void vgahw_get_all_palette_reg(u16 seg, u8 *data_far); -void vgahw_toggle_intensity(u8 flag); -void vgahw_select_video_dac_color_page(u8 flag, u8 data); -void vgahw_read_video_dac_state(u8 *pmode, u8 *curpage); -void vgahw_set_dac_regs(u16 seg, u8 *data_far, u8 start, int count); -void vgahw_get_dac_regs(u16 seg, u8 *data_far, u8 start, int count); -void vgahw_set_pel_mask(u8 val); -u8 vgahw_get_pel_mask(void); -void vgahw_save_dac_state(u16 seg, struct saveDACcolors *info); -void vgahw_restore_dac_state(u16 seg, struct saveDACcolors *info); -void vgahw_sequ_write(u8 index, u8 value); -void vgahw_grdc_write(u8 index, u8 value); -void vgahw_set_text_block_specifier(u8 spec); -void get_font_access(void); -void release_font_access(void); -void vgahw_set_cursor_shape(u8 start, u8 end); -void vgahw_set_active_page(u16 address); -void vgahw_set_cursor_pos(u16 address); -void vgahw_set_scan_lines(u8 lines); -u16 vgahw_get_vde(void); -void vgahw_save_state(u16 seg, struct saveVideoHardware *info); -void vgahw_restore_state(u16 seg, struct saveVideoHardware *info); -void vgahw_set_mode(struct vgamode_s *vmode_g); -void vgahw_enable_video_addressing(u8 disable); -void vgahw_init(void); - -// clext.c -int cirrus_set_video_mode(u8 mode, u8 noclearmem); -void cirrus_init(void); - -// vbe.c -#define VBE_OEM_STRING "SeaBIOS VBE(C) 2011" -#define VBE_VENDOR_STRING "SeaBIOS Developers" -#define VBE_PRODUCT_STRING "SeaBIOS VBE Adapter" -#define VBE_REVISION_STRING "Rev. 1" - -struct vbe_modeinfo -{ - u16 width; - u16 height; - u8 depth; - u16 linesize; - u32 phys_base; - u32 vram_size; -}; - -#endif // vgatables.h