X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=vgasrc%2Fclext.c;h=d6fa7a22113c98d57761a0ccec36bc9bd852c213;hb=3471fdbe63f9e982ae979094b6b3e7562dae1021;hp=ed6d50736b3c980fbba8f551ae605c6bd0f5df83;hpb=e48a53795452212a259a34e685e05f38d823cafe;p=seabios.git

diff --git a/vgasrc/clext.c b/vgasrc/clext.c
index ed6d507..d6fa7a2 100644
--- a/vgasrc/clext.c
+++ b/vgasrc/clext.c
@@ -5,40 +5,21 @@
 //
 // This file may be distributed under the terms of the GNU LGPLv3 license.
 
-#include "vgatables.h" // cirrus_init
+#include "clext.h" // clext_init
+#include "vgabios.h" // VBE_VENDOR_STRING
 #include "biosvar.h" // GET_GLOBAL
 #include "util.h" // dprintf
+#include "bregs.h" // struct bregs
+#include "vbe.h" // struct vbe_info
+#include "stdvga.h" // VGAREG_SEQU_ADDRESS
+#include "pci.h" // pci_config_readl
+#include "pci_regs.h" // PCI_BASE_ADDRESS_0
 
 
 /****************************************************************
  * tables
  ****************************************************************/
 
-struct cirrus_mode_s {
-    /* + 0 */
-    u16 mode;
-    u16 width;
-    u16 height;
-    u16 depth;
-    /* + 8 */
-    u16 hidden_dac; /* 0x3c6 */
-    u16 *seq; /* 0x3c4 */
-    u16 *graph; /* 0x3ce */
-    u16 *crtc; /* 0x3d4 */
-    /* +16 */
-    u8 bitsperpixel;
-    u8 vesacolortype;
-    u8 vesaredmask;
-    u8 vesaredpos;
-    u8 vesagreenmask;
-    u8 vesagreenpos;
-    u8 vesabluemask;
-    u8 vesabluepos;
-    /* +24 */
-    u8 vesareservedmask;
-    u8 vesareservedpos;
-};
-
 /* VGA */
 static u16 cseq_vga[] VAR16 = {0x0007,0xffff};
 static u16 cgraph_vga[] VAR16 = {0x0009,0x000a,0x000b,0xffff};
@@ -94,8 +75,8 @@ static u16 ccrtc_640x480x24[] VAR16 = {
     0x2c11,
     0x5f00,0x4f01,0x4f02,0x8003,0x5204,0x1e05,0x0b06,0x3e07,
     0x4009,0x000c,0x000d,
-    0xea10,0xdf12,0x0013,0x4014,0xdf15,0x0b16,0xc317,0xff18,
-    0x001a,0x321b,0x001d,
+    0xea10,0xdf12,0xf013,0x4014,0xdf15,0x0b16,0xc317,0xff18,
+    0x001a,0x221b,0x001d,
     0xffff
 };
 /* 800x600x8 */
@@ -230,68 +211,97 @@ static u16 cseq_1600x1200x8[] VAR16 = {
 static u16 ccrtc_1600x1200x8[] VAR16 = {
     0x2911,0xc300,0x9f01,0x9f02,0x8603,0x8304,0x9405,0x2406,0xf707,
     0x6009,0x000c,0x000d,
-    0x0310,0xff12,0xa013,0x4014,0xff15,0x2416,0xc317,0xff18,
+    0x0310,0xff12,0xc813,0x4014,0xff15,0x2416,0xc317,0xff18,
     0x001a,0x221b,0x001d,
     0xffff
 };
 
+struct cirrus_mode_s {
+    u16 mode;
+    struct vgamode_s info;
+
+    u16 hidden_dac; /* 0x3c6 */
+    u16 *seq; /* 0x3c4 */
+    u16 *graph; /* 0x3ce */
+    u16 *crtc; /* 0x3d4 */
+};
+
 static struct cirrus_mode_s cirrus_modes[] VAR16 = {
-    {0x5f,640,480,8,0x00,
-     cseq_640x480x8,cgraph_svgacolor,ccrtc_640x480x8,8,
-     4,0,0,0,0,0,0,0,0},
-    {0x64,640,480,16,0xe1,
-     cseq_640x480x16,cgraph_svgacolor,ccrtc_640x480x16,16,
-     6,5,11,6,5,5,0,0,0},
-    {0x66,640,480,15,0xf0,
-     cseq_640x480x16,cgraph_svgacolor,ccrtc_640x480x16,16,
-     6,5,10,5,5,5,0,1,15},
-    {0x71,640,480,24,0xe5,
-     cseq_640x480x24,cgraph_svgacolor,ccrtc_640x480x24,24,
-     6,8,16,8,8,8,0,0,0},
-
-    {0x5c,800,600,8,0x00,
-     cseq_800x600x8,cgraph_svgacolor,ccrtc_800x600x8,8,
-     4,0,0,0,0,0,0,0,0},
-    {0x65,800,600,16,0xe1,
-     cseq_800x600x16,cgraph_svgacolor,ccrtc_800x600x16,16,
-     6,5,11,6,5,5,0,0,0},
-    {0x67,800,600,15,0xf0,
-     cseq_800x600x16,cgraph_svgacolor,ccrtc_800x600x16,16,
-     6,5,10,5,5,5,0,1,15},
-
-    {0x60,1024,768,8,0x00,
-     cseq_1024x768x8,cgraph_svgacolor,ccrtc_1024x768x8,8,
-     4,0,0,0,0,0,0,0,0},
-    {0x74,1024,768,16,0xe1,
-     cseq_1024x768x16,cgraph_svgacolor,ccrtc_1024x768x16,16,
-     6,5,11,6,5,5,0,0,0},
-    {0x68,1024,768,15,0xf0,
-     cseq_1024x768x16,cgraph_svgacolor,ccrtc_1024x768x16,16,
-     6,5,10,5,5,5,0,1,15},
-
-    {0x78,800,600,24,0xe5,
-     cseq_800x600x24,cgraph_svgacolor,ccrtc_800x600x24,24,
-     6,8,16,8,8,8,0,0,0},
-    {0x79,1024,768,24,0xe5,
-     cseq_1024x768x24,cgraph_svgacolor,ccrtc_1024x768x24,24,
-     6,8,16,8,8,8,0,0,0},
-
-    {0x6d,1280,1024,8,0x00,
-     cseq_1280x1024x8,cgraph_svgacolor,ccrtc_1280x1024x8,8,
-     4,0,0,0,0,0,0,0,0},
-    {0x69,1280,1024,15,0xf0,
-     cseq_1280x1024x16,cgraph_svgacolor,ccrtc_1280x1024x16,16,
-     6,5,10,5,5,5,0,1,15},
-    {0x75,1280,1024,16,0xe1,
-     cseq_1280x1024x16,cgraph_svgacolor,ccrtc_1280x1024x16,16,
-     6,5,11,6,5,5,0,0,0},
-
-    {0x7b,1600,1200,8,0x00,
-     cseq_1600x1200x8,cgraph_svgacolor,ccrtc_1600x1200x8,8,
-     4,0,0,0,0,0,0,0,0},
-
-    {0xfe,0,0,0,0,cseq_vga,cgraph_vga,ccrtc_vga,0,
-     0xff,0,0,0,0,0,0,0,0},
+    {0x5f,{MM_PACKED,640,480,8},0x00,
+     cseq_640x480x8,cgraph_svgacolor,ccrtc_640x480x8},
+    {0x64,{MM_DIRECT,640,480,16},0xe1,
+     cseq_640x480x16,cgraph_svgacolor,ccrtc_640x480x16},
+    {0x66,{MM_DIRECT,640,480,15},0xf0,
+     cseq_640x480x16,cgraph_svgacolor,ccrtc_640x480x16},
+    {0x71,{MM_DIRECT,640,480,24},0xe5,
+     cseq_640x480x24,cgraph_svgacolor,ccrtc_640x480x24},
+
+    {0x5c,{MM_PACKED,800,600,8},0x00,
+     cseq_800x600x8,cgraph_svgacolor,ccrtc_800x600x8},
+    {0x65,{MM_DIRECT,800,600,16},0xe1,
+     cseq_800x600x16,cgraph_svgacolor,ccrtc_800x600x16},
+    {0x67,{MM_DIRECT,800,600,15},0xf0,
+     cseq_800x600x16,cgraph_svgacolor,ccrtc_800x600x16},
+
+    {0x60,{MM_PACKED,1024,768,8},0x00,
+     cseq_1024x768x8,cgraph_svgacolor,ccrtc_1024x768x8},
+    {0x74,{MM_DIRECT,1024,768,16},0xe1,
+     cseq_1024x768x16,cgraph_svgacolor,ccrtc_1024x768x16},
+    {0x68,{MM_DIRECT,1024,768,15},0xf0,
+     cseq_1024x768x16,cgraph_svgacolor,ccrtc_1024x768x16},
+
+    {0x78,{MM_DIRECT,800,600,24},0xe5,
+     cseq_800x600x24,cgraph_svgacolor,ccrtc_800x600x24},
+    {0x79,{MM_DIRECT,1024,768,24},0xe5,
+     cseq_1024x768x24,cgraph_svgacolor,ccrtc_1024x768x24},
+
+    {0x6d,{MM_PACKED,1280,1024,8},0x00,
+     cseq_1280x1024x8,cgraph_svgacolor,ccrtc_1280x1024x8},
+    {0x69,{MM_DIRECT,1280,1024,15},0xf0,
+     cseq_1280x1024x16,cgraph_svgacolor,ccrtc_1280x1024x16},
+    {0x75,{MM_DIRECT,1280,1024,16},0xe1,
+     cseq_1280x1024x16,cgraph_svgacolor,ccrtc_1280x1024x16},
+
+    {0x7b,{MM_PACKED,1600,1200,8},0x00,
+     cseq_1600x1200x8,cgraph_svgacolor,ccrtc_1600x1200x8},
+};
+
+static struct cirrus_mode_s mode_switchback VAR16 =
+    {0xfe,{0xff},0,cseq_vga,cgraph_vga,ccrtc_vga};
+
+static struct {
+    u16 vesamode, mode;
+} cirrus_vesa_modelist[] VAR16 = {
+    // 640x480x8
+    { 0x101, 0x5f },
+    // 640x480x15
+    { 0x110, 0x66 },
+    // 640x480x16
+    { 0x111, 0x64 },
+    // 640x480x24
+    { 0x112, 0x71 },
+    // 800x600x8
+    { 0x103, 0x5c },
+    // 800x600x15
+    { 0x113, 0x67 },
+    // 800x600x16
+    { 0x114, 0x65 },
+    // 800x600x24
+    { 0x115, 0x78 },
+    // 1024x768x8
+    { 0x105, 0x60 },
+    // 1024x768x15
+    { 0x116, 0x68 },
+    // 1024x768x16
+    { 0x117, 0x74 },
+    // 1024x768x24
+    { 0x118, 0x79 },
+    // 1280x1024x8
+    { 0x107, 0x6d },
+    // 1280x1024x15
+    { 0x119, 0x69 },
+    // 1280x1024x16
+    { 0x11a, 0x75 },
 };
 
 
@@ -299,9 +309,22 @@ static struct cirrus_mode_s cirrus_modes[] VAR16 = {
  * helper functions
  ****************************************************************/
 
+static u16
+cirrus_vesamode_to_mode(u16 vesamode)
+{
+    int i;
+    for (i=0; i<ARRAY_SIZE(cirrus_vesa_modelist); i++)
+        if (GET_GLOBAL(cirrus_vesa_modelist[i].vesamode) == vesamode)
+            return GET_GLOBAL(cirrus_vesa_modelist[i].mode);
+    return 0;
+}
+
 static struct cirrus_mode_s *
-cirrus_get_modeentry(u8 mode)
+cirrus_get_modeentry(int mode)
 {
+    int transmode = cirrus_vesamode_to_mode(mode);
+    if (transmode)
+        mode = transmode;
     struct cirrus_mode_s *table_g = cirrus_modes;
     while (table_g < &cirrus_modes[ARRAY_SIZE(cirrus_modes)]) {
         u16 tmode = GET_GLOBAL(table_g->mode);
@@ -312,6 +335,15 @@ cirrus_get_modeentry(u8 mode)
     return NULL;
 }
 
+struct vgamode_s *
+clext_find_mode(int mode)
+{
+    struct cirrus_mode_s *table_g = cirrus_get_modeentry(mode);
+    if (table_g)
+        return &table_g->info;
+    return stdvga_find_mode(mode);
+}
+
 static void
 cirrus_switch_mode_setregs(u16 *data, u16 port)
 {
@@ -324,14 +356,6 @@ cirrus_switch_mode_setregs(u16 *data, u16 port)
     }
 }
 
-static u16
-cirrus_get_crtc(void)
-{
-    if (inb(VGAREG_READ_MISC_OUTPUT) & 1)
-        return VGAREG_VGA_CRTC_ADDRESS;
-    return VGAREG_MDA_CRTC_ADDRESS;
-}
-
 static void
 cirrus_switch_mode(struct cirrus_mode_s *table)
 {
@@ -339,7 +363,7 @@ cirrus_switch_mode(struct cirrus_mode_s *table)
     outw(0x1206, VGAREG_SEQU_ADDRESS);
     cirrus_switch_mode_setregs(GET_GLOBAL(table->seq), VGAREG_SEQU_ADDRESS);
     cirrus_switch_mode_setregs(GET_GLOBAL(table->graph), VGAREG_GRDC_ADDRESS);
-    cirrus_switch_mode_setregs(GET_GLOBAL(table->crtc), cirrus_get_crtc());
+    cirrus_switch_mode_setregs(GET_GLOBAL(table->crtc), stdvga_get_crtc());
 
     outb(0x00, VGAREG_PEL_MASK);
     inb(VGAREG_PEL_MASK);
@@ -349,13 +373,13 @@ cirrus_switch_mode(struct cirrus_mode_s *table)
     outb(GET_GLOBAL(table->hidden_dac), VGAREG_PEL_MASK);
     outb(0xff, VGAREG_PEL_MASK);
 
-    u8 vesacolortype = GET_GLOBAL(table->vesacolortype);
-    u8 v = vgahw_get_single_palette_reg(0x10) & 0xfe;
-    if (vesacolortype == 3)
-        v |= 0x41;
-    else if (vesacolortype)
-        v |= 0x01;
-    vgahw_set_single_palette_reg(0x10, v);
+    u8 memmodel = GET_GLOBAL(table->info.memmodel);
+    u8 on = 0;
+    if (memmodel == MM_PLANAR)
+        on = 0x41;
+    else if (memmodel != MM_TEXT)
+        on = 0x01;
+    stdvga_attr_mask(0x10, 0x01, on);
 }
 
 static u8
@@ -397,22 +421,24 @@ cirrus_clear_vram(u16 param)
 }
 
 int
-cirrus_set_video_mode(u8 mode, u8 noclearmem)
+clext_set_mode(int mode, int flags)
 {
-    dprintf(1, "cirrus mode %d\n", mode);
+    dprintf(1, "cirrus mode %x\n", mode);
     SET_BDA(vbe_mode, 0);
     struct cirrus_mode_s *table_g = cirrus_get_modeentry(mode);
     if (table_g) {
         cirrus_switch_mode(table_g);
-        if (!noclearmem)
-            cirrus_clear_vram(0xffff);
+        if (!(flags & MF_LINEARFB))
+            cirrus_enable_16k_granularity();
+        if (!(flags & MF_NOCLEARMEM))
+            cirrus_clear_vram(0);
         SET_BDA(video_mode, mode);
-        return 1;
+        SET_BDA(vbe_mode, mode | flags);
+        return 0;
     }
-    table_g = cirrus_get_modeentry(0xfe);
-    cirrus_switch_mode(table_g);
+    cirrus_switch_mode(&mode_switchback);
     dprintf(1, "cirrus mode switch regular\n");
-    return 0;
+    return stdvga_set_mode(mode, flags);
 }
 
 static int
@@ -428,9 +454,9 @@ cirrus_check(void)
  ****************************************************************/
 
 static void
-cirrus_extbios_80h(struct bregs *regs)
+clext_101280(struct bregs *regs)
 {
-    u16 crtc_addr = cirrus_get_crtc();
+    u16 crtc_addr = stdvga_get_crtc();
     outb(0x27, crtc_addr);
     u8 v = inb(crtc_addr + 1);
     if (v == 0xa0)
@@ -446,29 +472,29 @@ cirrus_extbios_80h(struct bregs *regs)
 }
 
 static void
-cirrus_extbios_81h(struct bregs *regs)
+clext_101281(struct bregs *regs)
 {
     // XXX
     regs->ax = 0x0100;
 }
 
 static void
-cirrus_extbios_82h(struct bregs *regs)
+clext_101282(struct bregs *regs)
 {
-    u16 crtc_addr = cirrus_get_crtc();
+    u16 crtc_addr = stdvga_get_crtc();
     outb(0x27, crtc_addr);
     regs->al = inb(crtc_addr + 1) & 0x03;
     regs->ah = 0xAF;
 }
 
 static void
-cirrus_extbios_85h(struct bregs *regs)
+clext_101285(struct bregs *regs)
 {
     regs->al = cirrus_get_memsize();
 }
 
 static void
-cirrus_extbios_9Ah(struct bregs *regs)
+clext_10129a(struct bregs *regs)
 {
     regs->ax = 0x4060;
     regs->cx = 0x1132;
@@ -483,7 +509,7 @@ ASM16(
     "retf");
 
 static void
-cirrus_extbios_A0h(struct bregs *regs)
+clext_1012a0(struct bregs *regs)
 {
     struct cirrus_mode_s *table_g = cirrus_get_modeentry(regs->al & 0x7f);
     regs->ah = (table_g ? 1 : 0);
@@ -492,38 +518,43 @@ cirrus_extbios_A0h(struct bregs *regs)
 }
 
 static void
-cirrus_extbios_A1h(struct bregs *regs)
+clext_1012a1(struct bregs *regs)
 {
     regs->bx = 0x0e00; // IBM 8512/8513, color
 }
 
 static void
-cirrus_extbios_A2h(struct bregs *regs)
+clext_1012a2(struct bregs *regs)
 {
     regs->al = 0x07; // HSync 31.5 - 64.0 kHz
 }
 
 static void
-cirrus_extbios_AEh(struct bregs *regs)
+clext_1012ae(struct bregs *regs)
 {
     regs->al = 0x01; // High Refresh 75Hz
 }
 
+static void
+clext_1012XX(struct bregs *regs)
+{
+    debug_stub(regs);
+}
+
 void
-cirrus_extbios(struct bregs *regs)
+clext_1012(struct bregs *regs)
 {
-    // XXX - regs->bl < 0x80 or > 0xaf call regular handlers.
     switch (regs->bl) {
-    case 0x80: cirrus_extbios_80h(regs); break;
-    case 0x81: cirrus_extbios_81h(regs); break;
-    case 0x82: cirrus_extbios_82h(regs); break;
-    case 0x85: cirrus_extbios_85h(regs); break;
-    case 0x9a: cirrus_extbios_9Ah(regs); break;
-    case 0xa0: cirrus_extbios_A0h(regs); break;
-    case 0xa1: cirrus_extbios_A1h(regs); break;
-    case 0xa2: cirrus_extbios_A2h(regs); break;
-    case 0xae: cirrus_extbios_AEh(regs); break;
-    default: break;
+    case 0x80: clext_101280(regs); break;
+    case 0x81: clext_101281(regs); break;
+    case 0x82: clext_101282(regs); break;
+    case 0x85: clext_101285(regs); break;
+    case 0x9a: clext_10129a(regs); break;
+    case 0xa0: clext_1012a0(regs); break;
+    case 0xa1: clext_1012a1(regs); break;
+    case 0xa2: clext_1012a2(regs); break;
+    case 0xae: clext_1012ae(regs); break;
+    default:   clext_1012XX(regs); break;
     }
 }
 
@@ -532,103 +563,178 @@ cirrus_extbios(struct bregs *regs)
  * vesa calls
  ****************************************************************/
 
-#if 0
-static u16
-cirrus_vesamode_to_mode(u16 vesamode)
+void
+clext_list_modes(u16 seg, u16 *dest, u16 *last)
 {
-    // XXX - convert assembler
-    return 0;
+    int i;
+    for (i=0; i<ARRAY_SIZE(cirrus_vesa_modelist) && dest<last; i++) {
+        SET_FARVAR(seg, *dest, GET_GLOBAL(cirrus_vesa_modelist[i].vesamode));
+        dest++;
+    }
+    stdvga_list_modes(seg, dest, last);
 }
 
 static u8
 cirrus_get_bpp_bytes(void)
 {
-    // XXX - convert assembler
-    return 0;
+    outb(0x07, VGAREG_SEQU_ADDRESS);
+    u8 v = inb(VGAREG_SEQU_DATA) & 0x0e;
+    if (v == 0x06)
+        v &= 0x02;
+    v >>= 1;
+    if (v != 0x04)
+        v++;
+    return v;
 }
 
 static void
 cirrus_set_line_offset(u16 new_line_offset)
 {
-    // XXX - convert assembler
+    new_line_offset /= 8;
+    u16 crtc_addr = stdvga_get_crtc();
+    outb(0x13, crtc_addr);
+    outb(new_line_offset, crtc_addr + 1);
+
+    outb(0x1b, crtc_addr);
+    u8 v = inb(crtc_addr + 1);
+    outb(((new_line_offset & 0x100) >> 4) | (v & 0xef), crtc_addr + 1);
 }
 
 static u16
 cirrus_get_line_offset(void)
 {
-    // XXX - convert assembler
-    return 0;
-}
+    u16 crtc_addr = stdvga_get_crtc();
+    outb(0x13, crtc_addr);
+    u8 reg13 = inb(crtc_addr + 1);
+    outb(0x1b, crtc_addr);
+    u8 reg1b = inb(crtc_addr + 1);
 
-static u16
-cirrus_get_line_offset_entry(void *table)
-{
-    // XXX - convert assembler
-    return 0;
+    return (((reg1b & 0x10) << 4) + reg13) * 8;
 }
 
 static void
-cirrus_set_start_addr(void *addr)
+cirrus_set_start_addr(u32 addr)
 {
-    // XXX - convert assembler
+    u16 crtc_addr = stdvga_get_crtc();
+    outb(0x0d, crtc_addr);
+    outb(addr, crtc_addr + 1);
+
+    outb(0x0c, crtc_addr);
+    outb(addr>>8, crtc_addr + 1);
+
+    outb(0x1d, crtc_addr);
+    u8 v = inb(crtc_addr + 1);
+    outb(((addr & 0x0800) >> 4) | (v & 0x7f), crtc_addr + 1);
+
+    outb(0x1b, crtc_addr);
+    v = inb(crtc_addr + 1);
+    outb(((addr & 0x0100) >> 8) | ((addr & 0x0600) >> 7) | (v & 0xf2)
+         , crtc_addr + 1);
 }
 
-static void *
+static u32
 cirrus_get_start_addr(void)
 {
-    // XXX - convert assembler
-    return NULL;
-}
-#endif
+    u16 crtc_addr = stdvga_get_crtc();
+    outb(0x0c, crtc_addr);
+    u8 b2 = inb(crtc_addr + 1);
 
-static void
-cirrus_vesa_00h(struct bregs *regs)
-{
-    // XXX - convert assembler
-}
+    outb(0x0d, crtc_addr);
+    u8 b1 = inb(crtc_addr + 1);
 
-static void
-cirrus_vesa_01h(struct bregs *regs)
-{
-    // XXX - convert assembler
-}
+    outb(0x1b, crtc_addr);
+    u8 b3 = inb(crtc_addr + 1);
 
-static void
-cirrus_vesa_02h(struct bregs *regs)
-{
-    // XXX - convert assembler
-}
+    outb(0x1d, crtc_addr);
+    u8 b4 = inb(crtc_addr + 1);
 
-static void
-cirrus_vesa_03h(struct bregs *regs)
-{
-    // XXX - convert assembler
+    return (b1 | (b2<<8) | ((b3 & 0x01) << 16) | ((b3 & 0x0c) << 15)
+            | ((b4 & 0x80) << 12));
 }
 
-// XXX - add cirrus_vesa_05h_farentry to vgaentry.S
-
 static void
 cirrus_vesa_05h(struct bregs *regs)
 {
-    // XXX - convert assembler
+    if (regs->bl > 1)
+        goto fail;
+    if (regs->bh == 0) {
+        // set mempage
+        if (regs->dx >= 0x100)
+            goto fail;
+        outw((regs->dx << 8) | (regs->bl + 9), VGAREG_GRDC_ADDRESS);
+    } else if (regs->bh == 1) {
+        // get mempage
+        outb(regs->bl + 9, VGAREG_GRDC_ADDRESS);
+        regs->dx = inb(VGAREG_GRDC_DATA);
+    } else
+        goto fail;
+
+    regs->ax = 0x004f;
+    return;
+fail:
+    regs->ax = 0x014f;
 }
 
 static void
 cirrus_vesa_06h(struct bregs *regs)
 {
-    // XXX - convert assembler
+    if (regs->bl > 2) {
+        regs->ax = 0x0100;
+        return;
+    }
+
+    if (regs->bl == 0x00) {
+        cirrus_set_line_offset(cirrus_get_bpp_bytes() * regs->cx);
+    } else if (regs->bl == 0x02) {
+        cirrus_set_line_offset(regs->cx);
+    }
+
+    u32 v = cirrus_get_line_offset();
+    regs->cx = v / cirrus_get_bpp_bytes();
+    regs->bx = v;
+    regs->dx = (cirrus_get_memsize() * 64 * 1024) / v;
+    regs->ax = 0x004f;
 }
 
 static void
 cirrus_vesa_07h(struct bregs *regs)
 {
-    // XXX - convert assembler
+    if (regs->bl == 0x80 || regs->bl == 0x00) {
+        u32 addr = (cirrus_get_bpp_bytes() * regs->cx
+                    + cirrus_get_line_offset() * regs->dx);
+        cirrus_set_start_addr(addr / 4);
+    } else if (regs->bl == 0x01) {
+        u32 addr = cirrus_get_start_addr() * 4;
+        u32 linelength = cirrus_get_line_offset();
+        regs->dx = addr / linelength;
+        regs->cx = (addr % linelength) / cirrus_get_bpp_bytes();
+    } else {
+        regs->ax = 0x0100;
+        return;
+    }
+
+    regs->ax = 0x004f;
 }
 
 static void
 cirrus_vesa_10h(struct bregs *regs)
 {
-    // XXX - convert assembler
+    if (regs->bl == 0x00) {
+        regs->bx = 0x0f30;
+        regs->ax = 0x004f;
+        return;
+    }
+    if (regs->bl == 0x01) {
+        SET_BDA(vbe_flag, regs->bh);
+        regs->ax = 0x004f;
+        return;
+    }
+    if (regs->bl == 0x02) {
+        regs->bh = GET_BDA(vbe_flag);
+        regs->ax = 0x004f;
+        return;
+    }
+    regs->ax = 0x014f;
 }
 
 static void
@@ -642,10 +748,6 @@ void
 cirrus_vesa(struct bregs *regs)
 {
     switch (regs->al) {
-    case 0x00: cirrus_vesa_00h(regs); break;
-    case 0x01: cirrus_vesa_01h(regs); break;
-    case 0x02: cirrus_vesa_02h(regs); break;
-    case 0x03: cirrus_vesa_03h(regs); break;
     case 0x05: cirrus_vesa_05h(regs); break;
     case 0x06: cirrus_vesa_06h(regs); break;
     case 0x07: cirrus_vesa_07h(regs); break;
@@ -659,14 +761,28 @@ cirrus_vesa(struct bregs *regs)
  * init
  ****************************************************************/
 
-void
-cirrus_init(void)
+int
+clext_init(void)
 {
+    int ret = stdvga_init();
+    if (ret)
+        return ret;
+
     dprintf(1, "cirrus init\n");
     if (! cirrus_check())
-        return;
+        return -1;
     dprintf(1, "cirrus init 2\n");
 
+    SET_VGA(VBE_enabled, 1);
+    u32 lfb_addr = 0;
+    if (CONFIG_VGA_PCI)
+        lfb_addr = (pci_config_readl(GET_GLOBAL(VgaBDF), PCI_BASE_ADDRESS_0)
+                    & PCI_BASE_ADDRESS_MEM_MASK);
+    SET_VGA(VBE_framebuffer, lfb_addr);
+    u16 totalmem = cirrus_get_memsize();
+    SET_VGA(VBE_total_memory, totalmem * 64 * 1024);
+    SET_VGA(VBE_win_granularity, 16);
+
     // memory setup
     outb(0x0f, VGAREG_SEQU_ADDRESS);
     u8 v = inb(VGAREG_SEQU_DATA);
@@ -676,4 +792,6 @@ cirrus_init(void)
     // reset bitblt
     outw(0x0431, VGAREG_GRDC_ADDRESS);
     outw(0x0031, VGAREG_GRDC_ADDRESS);
+
+    return 0;
 }