// TODO:
// * review correctness of converted asm by comparing with RBIL
-// * refactor redundant code into sub-functions
-// * See if there is a method to the in/out stuff that can be encapsulated.
-// * remove "biosfn" prefixes
-// * verify all funcs static
//
// * convert vbe/clext code
#include "biosvar.h" // GET_BDA
#include "util.h" // memset
#include "vgatables.h" // find_vga_entry
-
-// XXX
-#define CONFIG_VBE 0
-#define CONFIG_CIRRUS 0
+#include "optionroms.h" // struct pci_data
+#include "config.h" // CONFIG_*
// XXX
#define DEBUG_VGA_POST 1
#define SET_VGA(var, val) SET_FARVAR(get_global_seg(), (var), (val))
+/****************************************************************
+ * 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)
{
}
static void
-biosfn_perform_gray_scale_summing(u16 start, u16 count)
+perform_gray_scale_summing(u16 start, u16 count)
{
vgahw_screen_disable();
int i;
}
static void
-biosfn_set_cursor_shape(u8 CH, u8 CL)
+set_cursor_shape(u8 start, u8 end)
{
- CH &= 0x3f;
- CL &= 0x1f;
+ start &= 0x3f;
+ end &= 0x1f;
- u16 curs = (CH << 8) + CL;
+ 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) && (CL < 8) && (CH < 0x20)) {
- if (CL != (CH + 1))
- CH = ((CH + 1) * cheight / 8) - 1;
+ if ((modeset_ctl & 0x01) && (cheight > 8) && (end < 8) && (start < 0x20)) {
+ if (end != (start + 1))
+ start = ((start + 1) * cheight / 8) - 1;
else
- CH = ((CL + 1) * cheight / 8) - 2;
- CL = ((CL + 1) * cheight / 8) - 1;
+ start = ((end + 1) * cheight / 8) - 2;
+ end = ((end + 1) * cheight / 8) - 1;
}
- vgahw_set_cursor_shape(CH, CL);
+ vgahw_set_cursor_shape(start, end);
}
static u16
-biosfn_get_cursor_shape(u8 page)
+get_cursor_shape(u8 page)
{
if (page > 7)
return 0;
}
static void
-biosfn_set_active_page(u8 page)
+set_active_page(u8 page)
{
if (page > 7)
return;
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
}
}
-static void
-set_scan_lines(u8 lines)
-{
- vgahw_set_scan_lines(lines);
- if (lines == 8)
- biosfn_set_cursor_shape(0x06, 0x07);
- else
- biosfn_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);
-}
+
+/****************************************************************
+ * Save and restore bda state
+ ****************************************************************/
static void
-biosfn_save_bda_state(u16 seg, struct saveBDAstate *info)
+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_pagestart, GET_BDA(video_pagestart));
SET_FARVAR(seg, info->video_page, GET_BDA(video_page));
/* current font */
- SET_FARVAR(seg, *(u32*)&info->font0_off, GET_IVT(0x1f).segoff);
- SET_FARVAR(seg, *(u32*)&info->font1_off, GET_IVT(0x43).segoff);
+ SET_FARVAR(seg, info->font0, GET_IVT(0x1f));
+ SET_FARVAR(seg, info->font1, GET_IVT(0x43));
}
static void
-biosfn_restore_bda_state(u16 seg, struct saveBDAstate *info)
+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_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_seg)
- , GET_FARVAR(seg, info->font0_off));
- SET_IVT(0x43, GET_FARVAR(seg, info->font1_seg)
- , GET_FARVAR(seg, info->font1_off));
+ SET_IVT(0x1f, GET_FARVAR(seg, info->font0));
+ SET_IVT(0x43, GET_FARVAR(seg, info->font1));
}
else
regs->al = 0x30;
- if (CONFIG_CIRRUS)
+ if (CONFIG_VGA_CIRRUS)
cirrus_set_video_mode(mode);
- if (CONFIG_VBE)
- if (vbe_has_vbe_display())
+ if (CONFIG_VGA_BOCHS)
+ if (bochs_has_vbe_display())
dispi_set_enable(VBE_DISPI_DISABLED);
// find the entry in the video modes
}
if ((modeset_ctl & 0x02) == 0x02)
- biosfn_perform_gray_scale_summing(0x00, 0x100);
+ perform_gray_scale_summing(0x00, 0x100);
}
struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
// 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_ptr, (u32)video_save_pointer_table);
- SET_BDA(video_savetable_seg, get_global_seg());
+ 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 cursor shape
if (GET_GLOBAL(vmode_g->memmodel) & TEXT)
- biosfn_set_cursor_shape(0x06, 0x07);
+ set_cursor_shape(0x06, 0x07);
// Set cursor pos for page 0..7
int i;
for (i = 0; i < 8; i++) {
}
// Set active page 0
- biosfn_set_active_page(0x00);
+ set_active_page(0x00);
// Write the fonts in memory
if (GET_GLOBAL(vmode_g->memmodel) & TEXT) {
call16_vgaint(0x1103, 0);
}
// Set the ints 0x1F and 0x43
- SET_IVT(0x1f, get_global_seg(), (u32)&vgafont8[128 * 8]);
+ SET_IVT(0x1f, SEGOFF(get_global_seg(), (u32)&vgafont8[128 * 8]));
switch (cheight) {
case 8:
- SET_IVT(0x43, get_global_seg(), (u32)vgafont8);
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont8));
break;
case 14:
- SET_IVT(0x43, get_global_seg(), (u32)vgafont14);
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont14));
break;
case 16:
- SET_IVT(0x43, get_global_seg(), (u32)vgafont16);
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont16));
break;
}
}
static void
handle_1001(struct bregs *regs)
{
- biosfn_set_cursor_shape(regs->ch, regs->cl);
+ set_cursor_shape(regs->ch, regs->cl);
}
static void
static void
handle_1003(struct bregs *regs)
{
- regs->cx = biosfn_get_cursor_shape(regs->bh);
+ regs->cx = get_cursor_shape(regs->bh);
struct cursorpos cp = get_cursor_pos(regs->bh);
regs->dl = cp.x;
regs->dh = cp.y;
static void
handle_1005(struct bregs *regs)
{
- biosfn_set_active_page(regs->al);
+ set_active_page(regs->al);
}
static void
static void
handle_100c(struct bregs *regs)
{
- // XXX - inline
- biosfn_write_pixel(regs->bh, regs->al, regs->cx, regs->dx);
+ // XXX - page (regs->bh) is unused
+ vgafb_write_pixel(regs->al, regs->cx, regs->dx);
}
static void
handle_100d(struct bregs *regs)
{
- // XXX - inline
- biosfn_read_pixel(regs->bh, regs->cx, regs->dx, ®s->ax);
+ // XXX - page (regs->bh) is unused
+ regs->al = vgafb_read_pixel(regs->cx, regs->dx);
}
static void noinline
static void
handle_101008(struct bregs *regs)
{
- regs->bh = vgahw_get_overscan_border_color(regs);
+ regs->bh = vgahw_get_overscan_border_color();
}
static void
static void
handle_10101b(struct bregs *regs)
{
- biosfn_perform_gray_scale_summing(regs->bx, regs->cx);
+ perform_gray_scale_summing(regs->bx, regs->cx);
}
static void
{
switch (regs->bh) {
case 0x00: {
- u32 segoff = GET_IVT(0x1f).segoff;
- regs->es = segoff >> 16;
- regs->bp = segoff;
+ struct segoff_s so = GET_IVT(0x1f);
+ regs->es = so.seg;
+ regs->bp = so.offset;
break;
}
case 0x01: {
- u32 segoff = GET_IVT(0x43).segoff;
- regs->es = segoff >> 16;
- regs->bp = segoff;
+ struct segoff_s so = GET_IVT(0x43);
+ regs->es = so.seg;
+ regs->bp = so.offset;
break;
}
case 0x02:
SET_FARVAR(seg, info->static_functionality_seg, get_global_seg());
// Hard coded copy from BIOS area. Should it be cleaner ?
- memcpy_far(seg, info->bda_0x49, SEG_BDA, (void*)0x49, 30);
- memcpy_far(seg, info->bda_0x84, SEG_BDA, (void*)0x84, 3);
+ 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);
data += sizeof(struct saveVideoHardware);
}
if (flags & 2) {
- biosfn_save_bda_state(seg, data);
+ save_bda_state(seg, data);
data += sizeof(struct saveBDAstate);
}
if (flags & 4)
data += sizeof(struct saveVideoHardware);
}
if (flags & 2) {
- biosfn_restore_bda_state(seg, data);
+ restore_bda_state(seg, data);
data += sizeof(struct saveBDAstate);
}
if (flags & 4)
static void
handle_104f(struct bregs *regs)
{
- if (! CONFIG_VBE || !vbe_has_vbe_display()) {
+ if (! CONFIG_VGA_BOCHS || !bochs_has_vbe_display()) {
handle_104fXX(regs);
return;
}
****************************************************************/
static void
-init_bios_area()
+init_bios_area(void)
{
// init detected hardware BIOS Area
// set 80x25 color (not clear from RBIL but usual)
init_bios_area();
- if (CONFIG_VBE)
- vbe_init();
+ if (CONFIG_VGA_BOCHS)
+ bochs_init();
extern void entry_10(void);
- SET_IVT(0x10, get_global_seg(), (u32)entry_10);
+ SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10));
- if (CONFIG_CIRRUS)
+ if (CONFIG_VGA_CIRRUS)
cirrus_init();
// XXX - clear screen and display info