[PATCH] vgabios: Move initialization code to new file vgainit.c.
Move the initialization code out of vgabios.c to a new file to reduce the size of the vgabios.c file. Signed-off-by: Kevin O'Connor <kevin@koconnor.net> --- Makefile | 3 +- vgasrc/vgabios.c | 154 +------------------------------------------------ vgasrc/vgabios.h | 3 + vgasrc/vgainit.c | 170 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 176 insertions(+), 154 deletions(-) create mode 100644 vgasrc/vgainit.c diff --git a/Makefile b/Makefile index 59aae99..8a3c9d1 100644 --- a/Makefile +++ b/Makefile @@ -202,7 +202,8 @@ $(OUT)bios.bin.elf: $(OUT)rom.o $(OUT)bios.bin.prep # VGA src files SRCVGA=src/output.c src/string.c src/hw/pci.c src/hw/serialio.c \ - vgasrc/vgabios.c vgasrc/vgafb.c vgasrc/vgafonts.c vgasrc/vbe.c \ + vgasrc/vgainit.c vgasrc/vgabios.c vgasrc/vgafb.c \ + vgasrc/vgafonts.c vgasrc/vbe.c \ vgasrc/stdvga.c vgasrc/stdvgamodes.c vgasrc/stdvgaio.c \ vgasrc/clext.c vgasrc/bochsvga.c vgasrc/geodevga.c diff --git a/vgasrc/vgabios.c b/vgasrc/vgabios.c index d93b190..57f1c1f 100644 --- a/vgasrc/vgabios.c +++ b/vgasrc/vgabios.c @@ -1,6 +1,6 @@ // VGA bios implementation // -// Copyright (C) 2009-2012 Kevin O'Connor <kevin@koconnor.net> +// 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. @@ -9,48 +9,13 @@ #include "bregs.h" // struct bregs #include "clext.h" // clext_1012 #include "config.h" // CONFIG_* -#include "hw/pci.h" // pci_config_readw -#include "hw/pci_regs.h" // PCI_VENDOR_ID #include "output.h" // dprintf -#include "std/optionrom.h" // struct pci_data -#include "std/pmm.h" // struct pmmheader #include "std/vbe.h" // VBE_RETURN_STATUS_FAILED #include "stdvga.h" // stdvga_set_cursor_shape #include "string.h" // memset_far -#include "util.h" // VERSION #include "vgabios.h" // calc_page_size #include "vgahw.h" // vgahw_set_mode -// Standard Video Save Pointer Table -struct VideoSavePointer_s { - struct segoff_s videoparam; - struct segoff_s paramdynamicsave; - struct segoff_s textcharset; - struct segoff_s graphcharset; - struct segoff_s secsavepointer; - u8 reserved[8]; -} PACKED; - -static struct VideoSavePointer_s video_save_pointer_table VAR16; - -struct VideoParam_s video_param_table[29] 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, -}; - /**************************************************************** * Helper functions @@ -1249,120 +1214,3 @@ handle_10(struct bregs *regs) 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) - set_equipment_flags(0x30, 0x20); - - // 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); -} - -u16 ExtraStackSeg VAR16 VISIBLE16; - -static void -allocate_extra_stack(void) -{ - if (!CONFIG_VGA_ALLOCATE_EXTRA_STACK) - return; - void *pmmscan = (void*)BUILD_BIOS_ADDR; - for (; pmmscan < (void*)BUILD_BIOS_ADDR+BUILD_BIOS_SIZE; pmmscan+=16) { - struct pmmheader *pmm = pmmscan; - if (pmm->signature != PMM_SIGNATURE) - continue; - if (checksum_far(0, pmm, pmm->length)) - continue; - struct segoff_s entry = 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) "\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; - } -} - -int VgaBDF VAR16 = -1; -int HaveRunInit VAR16; - -void VISIBLE16 -vga_post(struct bregs *regs) -{ - debug_preinit(); - dprintf(1, "Start SeaVGABIOS (version %s)\n", VERSION); - 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)); - stdvga_build_video_param(); - - extern void entry_10(void); - SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10)); - - allocate_extra_stack(); - - 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); -} diff --git a/vgasrc/vgabios.h b/vgasrc/vgabios.h index 5adbf4b..800b61f 100644 --- a/vgasrc/vgabios.h +++ b/vgasrc/vgabios.h @@ -78,6 +78,9 @@ extern u8 vgafont16alt[]; #define DEBUG_VGA_POST 1 #define DEBUG_VGA_10 3 +// vgainit.c +extern struct VideoSavePointer_s video_save_pointer_table; + // vgabios.c extern int VgaBDF; extern int HaveRunInit; diff --git a/vgasrc/vgainit.c b/vgasrc/vgainit.c new file mode 100644 index 0000000..7b01e03 --- /dev/null +++ b/vgasrc/vgainit.c @@ -0,0 +1,170 @@ +// 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 "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" // struct VideoSavePointer_s +#include "vgahw.h" // vgahw_setup + +// Standard Video Save Pointer Table +struct VideoSavePointer_s { + struct segoff_s videoparam; + struct segoff_s paramdynamicsave; + struct segoff_s textcharset; + struct segoff_s graphcharset; + struct segoff_s secsavepointer; + u8 reserved[8]; +} PACKED; + +struct VideoSavePointer_s video_save_pointer_table VAR16; + +struct VideoParam_s video_param_table[29] 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; + void *pmmscan = (void*)BUILD_BIOS_ADDR; + for (; pmmscan < (void*)BUILD_BIOS_ADDR+BUILD_BIOS_SIZE; pmmscan+=16) { + struct pmmheader *pmm = pmmscan; + if (pmm->signature != PMM_SIGNATURE) + continue; + if (checksum_far(0, pmm, pmm->length)) + continue; + struct segoff_s entry = 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) "\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; + } +} + + +/**************************************************************** + * 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); + + // 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); +} + +int VgaBDF VAR16 = -1; +int HaveRunInit VAR16; + +void VISIBLE16 +vga_post(struct bregs *regs) +{ + debug_preinit(); + dprintf(1, "Start SeaVGABIOS (version %s)\n", VERSION); + 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)); + stdvga_build_video_param(); + + extern void entry_10(void); + SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10)); + + allocate_extra_stack(); + + 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); +} -- 1.8.3.1
participants (1)
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Kevin O'Connor