| // QEMU Cirrus CLGD 54xx VGABIOS Extension. |
| // |
| // Copyright (C) 2009 Kevin O'Connor <kevin@koconnor.net> |
| // Copyright (c) 2004 Makoto Suzuki (suzu) |
| // |
| // This file may be distributed under the terms of the GNU LGPLv3 license. |
| |
| #include "biosvar.h" // GET_GLOBAL |
| #include "bregs.h" // struct bregs |
| #include "clext.h" // clext_setup |
| #include "hw/pci.h" // pci_config_readl |
| #include "hw/pci_regs.h" // PCI_BASE_ADDRESS_0 |
| #include "output.h" // dprintf |
| #include "stdvga.h" // VGAREG_SEQU_ADDRESS |
| #include "string.h" // memset16_far |
| #include "vgabios.h" // VBE_VENDOR_STRING |
| |
| |
| /**************************************************************** |
| * Cirrus mode tables |
| ****************************************************************/ |
| |
| /* VGA */ |
| static u16 cseq_vga[] VAR16 = {0x0007,0xffff}; |
| static u16 cgraph_vga[] VAR16 = {0x0009,0x000a,0x000b,0xffff}; |
| static u16 ccrtc_vga[] VAR16 = {0x001a,0x001b,0x001d,0xffff}; |
| |
| /* extensions */ |
| static u16 cgraph_svgacolor[] VAR16 = { |
| 0x0000,0x0001,0x0002,0x0003,0x0004,0x4005,0x0506,0x0f07,0xff08, |
| 0x0009,0x000a,0x000b, |
| 0xffff |
| }; |
| /* 640x480x8 */ |
| static u16 cseq_640x480x8[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1107, |
| 0x580b,0x580c,0x580d,0x580e, |
| 0x0412,0x0013,0x2017, |
| 0x331b,0x331c,0x331d,0x331e, |
| 0xffff |
| }; |
| static u16 ccrtc_640x480x8[] VAR16 = { |
| 0x2c11, |
| 0x5f00,0x4f01,0x4f02,0x8003,0x5204,0x1e05,0x0b06,0x3e07, |
| 0x4009,0x000c,0x000d, |
| 0xea10,0xdf12,0x5013,0x4014,0xdf15,0x0b16,0xc317,0xff18, |
| 0x001a,0x221b,0x001d, |
| 0xffff |
| }; |
| /* 640x480x16 */ |
| static u16 cseq_640x480x16[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1707, |
| 0x580b,0x580c,0x580d,0x580e, |
| 0x0412,0x0013,0x2017, |
| 0x331b,0x331c,0x331d,0x331e, |
| 0xffff |
| }; |
| static u16 ccrtc_640x480x16[] VAR16 = { |
| 0x2c11, |
| 0x5f00,0x4f01,0x4f02,0x8003,0x5204,0x1e05,0x0b06,0x3e07, |
| 0x4009,0x000c,0x000d, |
| 0xea10,0xdf12,0xa013,0x4014,0xdf15,0x0b16,0xc317,0xff18, |
| 0x001a,0x221b,0x001d, |
| 0xffff |
| }; |
| /* 640x480x24 */ |
| static u16 cseq_640x480x24[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1507, |
| 0x580b,0x580c,0x580d,0x580e, |
| 0x0412,0x0013,0x2017, |
| 0x331b,0x331c,0x331d,0x331e, |
| 0xffff |
| }; |
| static u16 ccrtc_640x480x24[] VAR16 = { |
| 0x2c11, |
| 0x5f00,0x4f01,0x4f02,0x8003,0x5204,0x1e05,0x0b06,0x3e07, |
| 0x4009,0x000c,0x000d, |
| 0xea10,0xdf12,0xf013,0x4014,0xdf15,0x0b16,0xc317,0xff18, |
| 0x001a,0x221b,0x001d, |
| 0xffff |
| }; |
| /* 800x600x8 */ |
| static u16 cseq_800x600x8[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1107, |
| 0x230b,0x230c,0x230d,0x230e, |
| 0x0412,0x0013,0x2017, |
| 0x141b,0x141c,0x141d,0x141e, |
| 0xffff |
| }; |
| static u16 ccrtc_800x600x8[] VAR16 = { |
| 0x2311,0x7d00,0x6301,0x6302,0x8003,0x6b04,0x1a05,0x9806,0xf007, |
| 0x6009,0x000c,0x000d, |
| 0x7d10,0x5712,0x6413,0x4014,0x5715,0x9816,0xc317,0xff18, |
| 0x001a,0x221b,0x001d, |
| 0xffff |
| }; |
| /* 800x600x16 */ |
| static u16 cseq_800x600x16[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1707, |
| 0x230b,0x230c,0x230d,0x230e, |
| 0x0412,0x0013,0x2017, |
| 0x141b,0x141c,0x141d,0x141e, |
| 0xffff |
| }; |
| static u16 ccrtc_800x600x16[] VAR16 = { |
| 0x2311,0x7d00,0x6301,0x6302,0x8003,0x6b04,0x1a05,0x9806,0xf007, |
| 0x6009,0x000c,0x000d, |
| 0x7d10,0x5712,0xc813,0x4014,0x5715,0x9816,0xc317,0xff18, |
| 0x001a,0x221b,0x001d, |
| 0xffff |
| }; |
| /* 800x600x24 */ |
| static u16 cseq_800x600x24[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1507, |
| 0x230b,0x230c,0x230d,0x230e, |
| 0x0412,0x0013,0x2017, |
| 0x141b,0x141c,0x141d,0x141e, |
| 0xffff |
| }; |
| static u16 ccrtc_800x600x24[] VAR16 = { |
| 0x2311,0x7d00,0x6301,0x6302,0x8003,0x6b04,0x1a05,0x9806,0xf007, |
| 0x6009,0x000c,0x000d, |
| 0x7d10,0x5712,0x2c13,0x4014,0x5715,0x9816,0xc317,0xff18, |
| 0x001a,0x321b,0x001d, |
| 0xffff |
| }; |
| /* 1024x768x8 */ |
| static u16 cseq_1024x768x8[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1107, |
| 0x760b,0x760c,0x760d,0x760e, |
| 0x0412,0x0013,0x2017, |
| 0x341b,0x341c,0x341d,0x341e, |
| 0xffff |
| }; |
| static u16 ccrtc_1024x768x8[] VAR16 = { |
| 0x2911,0xa300,0x7f01,0x7f02,0x8603,0x8304,0x9405,0x2406,0xf507, |
| 0x6009,0x000c,0x000d, |
| 0x0310,0xff12,0x8013,0x4014,0xff15,0x2416,0xc317,0xff18, |
| 0x001a,0x221b,0x001d, |
| 0xffff |
| }; |
| /* 1024x768x16 */ |
| static u16 cseq_1024x768x16[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1707, |
| 0x760b,0x760c,0x760d,0x760e, |
| 0x0412,0x0013,0x2017, |
| 0x341b,0x341c,0x341d,0x341e, |
| 0xffff |
| }; |
| static u16 ccrtc_1024x768x16[] VAR16 = { |
| 0x2911,0xa300,0x7f01,0x7f02,0x8603,0x8304,0x9405,0x2406,0xf507, |
| 0x6009,0x000c,0x000d, |
| 0x0310,0xff12,0x0013,0x4014,0xff15,0x2416,0xc317,0xff18, |
| 0x001a,0x321b,0x001d, |
| 0xffff |
| }; |
| /* 1024x768x24 */ |
| static u16 cseq_1024x768x24[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1507, |
| 0x760b,0x760c,0x760d,0x760e, |
| 0x0412,0x0013,0x2017, |
| 0x341b,0x341c,0x341d,0x341e, |
| 0xffff |
| }; |
| static u16 ccrtc_1024x768x24[] VAR16 = { |
| 0x2911,0xa300,0x7f01,0x7f02,0x8603,0x8304,0x9405,0x2406,0xf507, |
| 0x6009,0x000c,0x000d, |
| 0x0310,0xff12,0x8013,0x4014,0xff15,0x2416,0xc317,0xff18, |
| 0x001a,0x321b,0x001d, |
| 0xffff |
| }; |
| /* 1280x1024x8 */ |
| static u16 cseq_1280x1024x8[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1107, |
| 0x760b,0x760c,0x760d,0x760e, |
| 0x0412,0x0013,0x2017, |
| 0x341b,0x341c,0x341d,0x341e, |
| 0xffff |
| }; |
| static u16 ccrtc_1280x1024x8[] VAR16 = { |
| 0x2911,0xc300,0x9f01,0x9f02,0x8603,0x8304,0x9405,0x2406,0xf707, |
| 0x6009,0x000c,0x000d, |
| 0x0310,0xff12,0xa013,0x4014,0xff15,0x2416,0xc317,0xff18, |
| 0x001a,0x221b,0x001d, |
| 0xffff |
| }; |
| /* 1280x1024x16 */ |
| static u16 cseq_1280x1024x16[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1707, |
| 0x760b,0x760c,0x760d,0x760e, |
| 0x0412,0x0013,0x2017, |
| 0x341b,0x341c,0x341d,0x341e, |
| 0xffff |
| }; |
| static u16 ccrtc_1280x1024x16[] VAR16 = { |
| 0x2911,0xc300,0x9f01,0x9f02,0x8603,0x8304,0x9405,0x2406,0xf707, |
| 0x6009,0x000c,0x000d, |
| 0x0310,0xff12,0x4013,0x4014,0xff15,0x2416,0xc317,0xff18, |
| 0x001a,0x321b,0x001d, |
| 0xffff |
| }; |
| |
| /* 1600x1200x8 */ |
| static u16 cseq_1600x1200x8[] VAR16 = { |
| 0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1107, |
| 0x760b,0x760c,0x760d,0x760e, |
| 0x0412,0x0013,0x2017, |
| 0x341b,0x341c,0x341d,0x341e, |
| 0xffff |
| }; |
| static u16 ccrtc_1600x1200x8[] VAR16 = { |
| 0x2911,0xc300,0x9f01,0x9f02,0x8603,0x8304,0x9405,0x2406,0xf707, |
| 0x6009,0x000c,0x000d, |
| 0x0310,0xff12,0xc813,0x4014,0xff15,0x2416,0xc317,0xff18, |
| 0x001a,0x221b,0x001d, |
| 0xffff |
| }; |
| |
| struct cirrus_mode_s { |
| u16 mode, vesamode; |
| 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,0x101,{MM_PACKED,640,480,8,8,16,SEG_GRAPH},0x00, |
| cseq_640x480x8,cgraph_svgacolor,ccrtc_640x480x8}, |
| {0x64,0x111,{MM_DIRECT,640,480,16,8,16,SEG_GRAPH},0xe1, |
| cseq_640x480x16,cgraph_svgacolor,ccrtc_640x480x16}, |
| {0x66,0x110,{MM_DIRECT,640,480,15,8,16,SEG_GRAPH},0xf0, |
| cseq_640x480x16,cgraph_svgacolor,ccrtc_640x480x16}, |
| {0x71,0x112,{MM_DIRECT,640,480,24,8,16,SEG_GRAPH},0xe5, |
| cseq_640x480x24,cgraph_svgacolor,ccrtc_640x480x24}, |
| |
| {0x5c,0x103,{MM_PACKED,800,600,8,8,16,SEG_GRAPH},0x00, |
| cseq_800x600x8,cgraph_svgacolor,ccrtc_800x600x8}, |
| {0x65,0x114,{MM_DIRECT,800,600,16,8,16,SEG_GRAPH},0xe1, |
| cseq_800x600x16,cgraph_svgacolor,ccrtc_800x600x16}, |
| {0x67,0x113,{MM_DIRECT,800,600,15,8,16,SEG_GRAPH},0xf0, |
| cseq_800x600x16,cgraph_svgacolor,ccrtc_800x600x16}, |
| |
| {0x60,0x105,{MM_PACKED,1024,768,8,8,16,SEG_GRAPH},0x00, |
| cseq_1024x768x8,cgraph_svgacolor,ccrtc_1024x768x8}, |
| {0x74,0x117,{MM_DIRECT,1024,768,16,8,16,SEG_GRAPH},0xe1, |
| cseq_1024x768x16,cgraph_svgacolor,ccrtc_1024x768x16}, |
| {0x68,0x116,{MM_DIRECT,1024,768,15,8,16,SEG_GRAPH},0xf0, |
| cseq_1024x768x16,cgraph_svgacolor,ccrtc_1024x768x16}, |
| |
| {0x78,0x115,{MM_DIRECT,800,600,24,8,16,SEG_GRAPH},0xe5, |
| cseq_800x600x24,cgraph_svgacolor,ccrtc_800x600x24}, |
| {0x79,0x118,{MM_DIRECT,1024,768,24,8,16,SEG_GRAPH},0xe5, |
| cseq_1024x768x24,cgraph_svgacolor,ccrtc_1024x768x24}, |
| |
| {0x6d,0x107,{MM_PACKED,1280,1024,8,8,16,SEG_GRAPH},0x00, |
| cseq_1280x1024x8,cgraph_svgacolor,ccrtc_1280x1024x8}, |
| {0x69,0x119,{MM_DIRECT,1280,1024,15,8,16,SEG_GRAPH},0xf0, |
| cseq_1280x1024x16,cgraph_svgacolor,ccrtc_1280x1024x16}, |
| {0x75,0x11a,{MM_DIRECT,1280,1024,16,8,16,SEG_GRAPH},0xe1, |
| cseq_1280x1024x16,cgraph_svgacolor,ccrtc_1280x1024x16}, |
| |
| {0x7b,0xffff,{MM_PACKED,1600,1200,8,8,16,SEG_GRAPH},0x00, |
| cseq_1600x1200x8,cgraph_svgacolor,ccrtc_1600x1200x8}, |
| }; |
| |
| static struct cirrus_mode_s mode_switchback VAR16 = |
| {0xfe,0xffff,{0xff},0,cseq_vga,cgraph_vga,ccrtc_vga}; |
| |
| int |
| is_cirrus_mode(struct vgamode_s *vmode_g) |
| { |
| return (vmode_g >= &cirrus_modes[0].info |
| && vmode_g <= &cirrus_modes[ARRAY_SIZE(cirrus_modes)-1].info); |
| } |
| |
| struct vgamode_s * |
| clext_find_mode(int mode) |
| { |
| struct cirrus_mode_s *table_g = cirrus_modes; |
| while (table_g < &cirrus_modes[ARRAY_SIZE(cirrus_modes)]) { |
| if (GET_GLOBAL(table_g->mode) == mode |
| || GET_GLOBAL(table_g->vesamode) == mode) |
| return &table_g->info; |
| table_g++; |
| } |
| return stdvga_find_mode(mode); |
| } |
| |
| void |
| clext_list_modes(u16 seg, u16 *dest, u16 *last) |
| { |
| int i; |
| for (i=0; i<ARRAY_SIZE(cirrus_modes) && dest<last; i++) { |
| u16 mode = GET_GLOBAL(cirrus_modes[i].vesamode); |
| if (mode == 0xffff) |
| continue; |
| SET_FARVAR(seg, *dest, mode); |
| dest++; |
| } |
| stdvga_list_modes(seg, dest, last); |
| } |
| |
| |
| /**************************************************************** |
| * helper functions |
| ****************************************************************/ |
| |
| int |
| clext_get_window(struct vgamode_s *vmode_g, int window) |
| { |
| return stdvga_grdc_read(window + 9); |
| } |
| |
| int |
| clext_set_window(struct vgamode_s *vmode_g, int window, int val) |
| { |
| if (val >= 0x100) |
| return -1; |
| stdvga_grdc_write(window + 9, val); |
| return 0; |
| } |
| |
| int |
| clext_get_linelength(struct vgamode_s *vmode_g) |
| { |
| u16 crtc_addr = stdvga_get_crtc(); |
| u8 reg13 = stdvga_crtc_read(crtc_addr, 0x13); |
| u8 reg1b = stdvga_crtc_read(crtc_addr, 0x1b); |
| return (((reg1b & 0x10) << 4) + reg13) * 8 / stdvga_vram_ratio(vmode_g); |
| } |
| |
| int |
| clext_set_linelength(struct vgamode_s *vmode_g, int val) |
| { |
| u16 crtc_addr = stdvga_get_crtc(); |
| val = DIV_ROUND_UP(val * stdvga_vram_ratio(vmode_g), 8); |
| stdvga_crtc_write(crtc_addr, 0x13, val); |
| stdvga_crtc_mask(crtc_addr, 0x1b, 0x10, (val & 0x100) >> 4); |
| return 0; |
| } |
| |
| int |
| clext_get_displaystart(struct vgamode_s *vmode_g) |
| { |
| u16 crtc_addr = stdvga_get_crtc(); |
| u8 b2 = stdvga_crtc_read(crtc_addr, 0x0c); |
| u8 b1 = stdvga_crtc_read(crtc_addr, 0x0d); |
| u8 b3 = stdvga_crtc_read(crtc_addr, 0x1b); |
| u8 b4 = stdvga_crtc_read(crtc_addr, 0x1d); |
| int val = (b1 | (b2<<8) | ((b3 & 0x01) << 16) | ((b3 & 0x0c) << 15) |
| | ((b4 & 0x80) << 12)); |
| return val * 4 / stdvga_vram_ratio(vmode_g); |
| } |
| |
| int |
| clext_set_displaystart(struct vgamode_s *vmode_g, int val) |
| { |
| u16 crtc_addr = stdvga_get_crtc(); |
| val = val * stdvga_vram_ratio(vmode_g) / 4; |
| stdvga_crtc_write(crtc_addr, 0x0d, val); |
| stdvga_crtc_write(crtc_addr, 0x0c, val >> 8); |
| stdvga_crtc_mask(crtc_addr, 0x1d, 0x80, (val & 0x0800) >> 4); |
| stdvga_crtc_mask(crtc_addr, 0x1b, 0x0d |
| , ((val & 0x0100) >> 8) | ((val & 0x0600) >> 7)); |
| return 0; |
| } |
| |
| int |
| clext_size_state(int states) |
| { |
| if (states & 8) |
| return -1; |
| return stdvga_size_state(states); |
| } |
| |
| int |
| clext_save_state(u16 seg, void *data, int states) |
| { |
| if (states & 8) |
| return -1; |
| return stdvga_save_state(seg, data, states); |
| } |
| |
| int |
| clext_restore_state(u16 seg, void *data, int states) |
| { |
| if (states & 8) |
| return -1; |
| return stdvga_restore_state(seg, data, states); |
| } |
| |
| |
| /**************************************************************** |
| * Mode setting |
| ****************************************************************/ |
| |
| static void |
| cirrus_switch_mode_setregs(u16 *data, u16 port) |
| { |
| for (;;) { |
| u16 val = GET_GLOBAL(*data); |
| if (val == 0xffff) |
| return; |
| outw(val, port); |
| data++; |
| } |
| } |
| |
| static void |
| cirrus_switch_mode(struct cirrus_mode_s *table) |
| { |
| // Unlock cirrus special |
| stdvga_sequ_write(0x06, 0x12); |
| 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), stdvga_get_crtc()); |
| |
| stdvga_pelmask_write(0x00); |
| stdvga_pelmask_read(); |
| stdvga_pelmask_read(); |
| stdvga_pelmask_read(); |
| stdvga_pelmask_read(); |
| stdvga_pelmask_write(GET_GLOBAL(table->hidden_dac)); |
| stdvga_pelmask_write(0xff); |
| |
| 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); |
| stdvga_attrindex_write(0x20); |
| } |
| |
| static void |
| cirrus_enable_16k_granularity(void) |
| { |
| stdvga_grdc_mask(0x0b, 0x00, 0x20); |
| } |
| |
| static void |
| cirrus_clear_vram(u16 fill) |
| { |
| cirrus_enable_16k_granularity(); |
| int count = GET_GLOBAL(VBE_total_memory) / (16 * 1024); |
| int i; |
| for (i=0; i<count; i++) { |
| stdvga_grdc_write(0x09, i); |
| memset16_far(SEG_GRAPH, 0, fill, 16 * 1024); |
| } |
| stdvga_grdc_write(0x09, 0x00); |
| } |
| |
| int |
| clext_set_mode(struct vgamode_s *vmode_g, int flags) |
| { |
| if (!is_cirrus_mode(vmode_g)) { |
| cirrus_switch_mode(&mode_switchback); |
| dprintf(1, "cirrus mode switch regular\n"); |
| return stdvga_set_mode(vmode_g, flags); |
| } |
| struct cirrus_mode_s *table_g = container_of( |
| vmode_g, struct cirrus_mode_s, info); |
| cirrus_switch_mode(table_g); |
| if (!(flags & MF_LINEARFB)) |
| cirrus_enable_16k_granularity(); |
| if (!(flags & MF_NOCLEARMEM)) |
| // fill with 0xff to keep win 2K happy |
| cirrus_clear_vram(flags & MF_LEGACY ? 0xffff : 0x0000); |
| return 0; |
| } |
| |
| |
| /**************************************************************** |
| * extbios |
| ****************************************************************/ |
| |
| static void |
| clext_101280(struct bregs *regs) |
| { |
| u8 v = stdvga_crtc_read(stdvga_get_crtc(), 0x27); |
| if (v == 0xa0) |
| // 5430 |
| regs->ax = 0x0032; |
| else if (v == 0xb8) |
| // 5446 |
| regs->ax = 0x0039; |
| else |
| regs->ax = 0x00ff; |
| regs->bx = 0x00; |
| return; |
| } |
| |
| static void |
| clext_101281(struct bregs *regs) |
| { |
| // XXX |
| regs->ax = 0x0100; |
| } |
| |
| static void |
| clext_101282(struct bregs *regs) |
| { |
| regs->al = stdvga_crtc_read(stdvga_get_crtc(), 0x27) & 0x03; |
| regs->ah = 0xAF; |
| } |
| |
| static void |
| clext_101285(struct bregs *regs) |
| { |
| regs->al = GET_GLOBAL(VBE_total_memory) / (64*1024); |
| } |
| |
| static void |
| clext_10129a(struct bregs *regs) |
| { |
| regs->ax = 0x4060; |
| regs->cx = 0x1132; |
| } |
| |
| extern void a0h_callback(void); |
| ASM16( |
| // fatal: not implemented yet |
| "a0h_callback:" |
| "cli\n" |
| "hlt\n" |
| "lretw"); |
| |
| static void |
| clext_1012a0(struct bregs *regs) |
| { |
| struct vgamode_s *table_g = clext_find_mode(regs->al & 0x7f); |
| regs->ah = (table_g ? 1 : 0); |
| regs->bx = (u32)a0h_callback; |
| regs->ds = regs->si = regs->es = regs->di = 0xffff; |
| } |
| |
| static void |
| clext_1012a1(struct bregs *regs) |
| { |
| regs->bx = 0x0e00; // IBM 8512/8513, color |
| } |
| |
| static void |
| clext_1012a2(struct bregs *regs) |
| { |
| regs->al = 0x07; // HSync 31.5 - 64.0 kHz |
| } |
| |
| static void |
| clext_1012ae(struct bregs *regs) |
| { |
| regs->al = 0x01; // High Refresh 75Hz |
| } |
| |
| static void |
| clext_1012XX(struct bregs *regs) |
| { |
| debug_stub(regs); |
| } |
| |
| void |
| clext_1012(struct bregs *regs) |
| { |
| switch (regs->bl) { |
| 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; |
| } |
| } |
| |
| |
| /**************************************************************** |
| * init |
| ****************************************************************/ |
| |
| static int |
| cirrus_check(void) |
| { |
| stdvga_sequ_write(0x06, 0x92); |
| return stdvga_sequ_read(0x06) == 0x12; |
| } |
| |
| static u8 |
| cirrus_get_memsize(void) |
| { |
| // get DRAM band width |
| u8 v = stdvga_sequ_read(0x0f); |
| u8 x = (v >> 3) & 0x03; |
| if (x == 0x03 && v & 0x80) |
| // 4MB |
| return 0x40; |
| return 0x04 << x; |
| } |
| |
| int |
| clext_setup(void) |
| { |
| int ret = stdvga_setup(); |
| if (ret) |
| return ret; |
| |
| dprintf(1, "cirrus init\n"); |
| if (! cirrus_check()) |
| return -1; |
| dprintf(1, "cirrus init 2\n"); |
| |
| // memory setup |
| stdvga_sequ_write(0x0a, stdvga_sequ_read(0x0f) & 0x18); |
| // set vga mode |
| stdvga_sequ_write(0x07, 0x00); |
| // reset bitblt |
| stdvga_grdc_write(0x31, 0x04); |
| stdvga_grdc_write(0x31, 0x00); |
| |
| if (GET_GLOBAL(HaveRunInit)) |
| return 0; |
| |
| u32 lfb_addr = 0; |
| int bdf = GET_GLOBAL(VgaBDF); |
| if (CONFIG_VGA_PCI && bdf >= 0) |
| lfb_addr = (pci_config_readl(bdf, 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); |
| |
| return 0; |
| } |
