diff options
Diffstat (limited to 'qemu/roms/seabios/vgasrc/vgainit.c')
| -rw-r--r-- | qemu/roms/seabios/vgasrc/vgainit.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/qemu/roms/seabios/vgasrc/vgainit.c b/qemu/roms/seabios/vgasrc/vgainit.c deleted file mode 100644 index 40997dbbd..000000000 --- a/qemu/roms/seabios/vgasrc/vgainit.c +++ /dev/null @@ -1,196 +0,0 @@ -// Main VGA bios initialization -// -// Copyright (C) 2009-2013 Kevin O'Connor <kevin@koconnor.net> -// Copyright (C) 2001-2008 the LGPL VGABios developers Team -// -// This file may be distributed under the terms of the GNU LGPLv3 license. - -#include "biosvar.h" // SET_BDA -#include "bregs.h" // struct bregs -#include "hw/pci.h" // pci_config_readw -#include "hw/pci_regs.h" // PCI_VENDOR_ID -#include "hw/serialio.h" // serial_debug_preinit -#include "output.h" // dprintf -#include "std/optionrom.h" // struct pci_data -#include "std/pmm.h" // struct pmmheader -#include "string.h" // checksum_far -#include "util.h" // VERSION -#include "vgabios.h" // video_save_pointer_table -#include "vgahw.h" // vgahw_setup - -struct video_save_pointer_s video_save_pointer_table VAR16; - -struct video_param_s video_param_table[29] VAR16; - -// Type of emulator platform - for dprintf with certain compile options. -int PlatformRunningOn VAR16; - - -/**************************************************************** - * PCI Data - ****************************************************************/ - -struct pci_data rom_pci_data VAR16 VISIBLE16 = { - .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, -}; - - -/**************************************************************** - * PMM call and extra stack setup - ****************************************************************/ - -u16 ExtraStackSeg VAR16 VISIBLE16; - -static void -allocate_extra_stack(void) -{ - if (!CONFIG_VGA_ALLOCATE_EXTRA_STACK) - return; - u32 pmmscan; - for (pmmscan=0; pmmscan < BUILD_BIOS_SIZE; pmmscan+=16) { - struct pmmheader *pmm = (void*)pmmscan; - if (GET_FARVAR(SEG_BIOS, pmm->signature) != PMM_SIGNATURE) - continue; - if (checksum_far(SEG_BIOS, pmm, GET_FARVAR(SEG_BIOS, pmm->length))) - continue; - struct segoff_s entry = GET_FARVAR(SEG_BIOS, pmm->entry); - dprintf(1, "Attempting to allocate VGA stack via pmm call to %04x:%04x\n" - , entry.seg, entry.offset); - u16 res1, res2; - asm volatile( - "pushl %0\n" - "pushw $(8|1)\n" // Permanent low memory request - "pushl $0xffffffff\n" // Anonymous handle - "pushl $" __stringify(CONFIG_VGA_EXTRA_STACK_SIZE/16) "\n" - "pushw $0x00\n" // PMM allocation request - "lcallw *12(%%esp)\n" - "addl $16, %%esp\n" - "cli\n" - "cld\n" - : "+r" (entry.segoff), "=a" (res1), "=d" (res2) : : "cc", "memory"); - u32 res = res1 | (res2 << 16); - if (!res || res == PMM_FUNCTION_NOT_SUPPORTED) - return; - dprintf(1, "VGA stack allocated at %x\n", res); - SET_VGA(ExtraStackSeg, res >> 4); - extern void entry_10_extrastack(void); - SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10_extrastack)); - return; - } -} - - -/**************************************************************** - * Timer hook - ****************************************************************/ - -struct segoff_s Timer_Hook_Resume VAR16 VISIBLE16; - -void VISIBLE16 -handle_timer_hook(void) -{ - if (!vga_emulate_text()) - return; - vgafb_set_swcursor(GET_BDA(timer_counter) % 18 < 9); -} - -static void -hook_timer_irq(void) -{ - if (!CONFIG_VGA_EMULATE_TEXT) - return; - extern void entry_timer_hook(void); - extern void entry_timer_hook_extrastack(void); - struct segoff_s oldirq = GET_IVT(0x08); - struct segoff_s newirq = SEGOFF(get_global_seg(), (u32)entry_timer_hook); - if (CONFIG_VGA_ALLOCATE_EXTRA_STACK && GET_GLOBAL(ExtraStackSeg)) - newirq = SEGOFF(get_global_seg(), (u32)entry_timer_hook_extrastack); - dprintf(1, "Hooking hardware timer irq (old=%x new=%x)\n" - , oldirq.segoff, newirq.segoff); - SET_VGA(Timer_Hook_Resume, oldirq); - SET_IVT(0x08, newirq); -} - - -/**************************************************************** - * VGA post - ****************************************************************/ - -static void -init_bios_area(void) -{ - // init detected hardware BIOS Area - // set 80x25 color (not clear from RBIL but usual) - set_equipment_flags(0x30, 0x20); - - // Set the basic modeset options - SET_BDA(modeset_ctl, 0x51); - - SET_BDA(dcc_index, CONFIG_VGA_STDVGA_PORTS ? 0x08 : 0xff); - 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... -} - -int VgaBDF VAR16 = -1; -int HaveRunInit VAR16; - -void VISIBLE16 -vga_post(struct bregs *regs) -{ - serial_debug_preinit(); - dprintf(1, "Start SeaVGABIOS (version %s)\n", VERSION); - dprintf(1, "VGABUILD: %s\n", BUILDINFO); - debug_enter(regs, DEBUG_VGA_POST); - - if (CONFIG_VGA_PCI && !GET_GLOBAL(HaveRunInit)) { - u16 bdf = regs->ax; - if ((pci_config_readw(bdf, PCI_VENDOR_ID) - == GET_GLOBAL(rom_pci_data.vendor)) - && (pci_config_readw(bdf, PCI_DEVICE_ID) - == GET_GLOBAL(rom_pci_data.device))) - SET_VGA(VgaBDF, bdf); - } - - int ret = vgahw_setup(); - if (ret) { - dprintf(1, "Failed to initialize VGA hardware. Exiting.\n"); - return; - } - - if (GET_GLOBAL(HaveRunInit)) - return; - - init_bios_area(); - - SET_VGA(video_save_pointer_table.videoparam - , SEGOFF(get_global_seg(), (u32)video_param_table)); - if (CONFIG_VGA_STDVGA_PORTS) - stdvga_build_video_param(); - - extern void entry_10(void); - SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10)); - - allocate_extra_stack(); - - hook_timer_irq(); - - SET_VGA(HaveRunInit, 1); - - // Fixup checksum - extern u8 _rom_header_size, _rom_header_checksum; - SET_VGA(_rom_header_checksum, 0); - u8 sum = -checksum_far(get_global_seg(), 0, - GET_GLOBAL(_rom_header_size) * 512); - SET_VGA(_rom_header_checksum, sum); -} |