diff options
Diffstat (limited to 'qemu/roms/seabios/src/optionroms.c')
-rw-r--r-- | qemu/roms/seabios/src/optionroms.c | 472 |
1 files changed, 0 insertions, 472 deletions
diff --git a/qemu/roms/seabios/src/optionroms.c b/qemu/roms/seabios/src/optionroms.c deleted file mode 100644 index c81eff2d2..000000000 --- a/qemu/roms/seabios/src/optionroms.c +++ /dev/null @@ -1,472 +0,0 @@ -// Option rom scanning code. -// -// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> -// Copyright (C) 2002 MandrakeSoft S.A. -// -// This file may be distributed under the terms of the GNU LGPLv3 license. - -#include "bregs.h" // struct bregs -#include "config.h" // CONFIG_* -#include "farptr.h" // FLATPTR_TO_SEG -#include "hw/pci.h" // foreachpci -#include "hw/pci_ids.h" // PCI_CLASS_DISPLAY_VGA -#include "hw/pci_regs.h" // PCI_ROM_ADDRESS -#include "malloc.h" // rom_confirm -#include "output.h" // dprintf -#include "romfile.h" // romfile_loadint -#include "stacks.h" // farcall16big -#include "std/optionrom.h" // struct rom_header -#include "std/pnpbios.h" // PNP_SIGNATURE -#include "string.h" // memset -#include "util.h" // get_pnp_offset -#include "tcgbios.h" // tpm_* - -static int EnforceChecksum, S3ResumeVga, RunPCIroms; - - -/**************************************************************** - * Helper functions - ****************************************************************/ - -// Execute a given option rom. -static void -__callrom(struct rom_header *rom, u16 offset, u16 bdf) -{ - u16 seg = FLATPTR_TO_SEG(rom); - dprintf(1, "Running option rom at %04x:%04x\n", seg, offset); - - struct bregs br; - memset(&br, 0, sizeof(br)); - br.flags = F_IF; - br.ax = bdf; - br.bx = 0xffff; - br.dx = 0xffff; - br.es = SEG_BIOS; - br.di = get_pnp_offset(); - br.code = SEGOFF(seg, offset); - start_preempt(); - farcall16big(&br); - finish_preempt(); -} - -// Execute a given option rom at the standard entry vector. -void -callrom(struct rom_header *rom, u16 bdf) -{ - __callrom(rom, OPTION_ROM_INITVECTOR, bdf); -} - -// Execute a BCV option rom registered via add_bcv(). -void -call_bcv(u16 seg, u16 ip) -{ - __callrom(MAKE_FLATPTR(seg, 0), ip, 0); -} - -// Verify that an option rom looks valid -static int -is_valid_rom(struct rom_header *rom) -{ - dprintf(6, "Checking rom %p (sig %x size %d)\n" - , rom, rom->signature, rom->size); - if (rom->signature != OPTION_ROM_SIGNATURE) - return 0; - if (! rom->size) - return 0; - u32 len = rom->size * 512; - u8 sum = checksum(rom, len); - if (sum != 0) { - dprintf(1, "Found option rom with bad checksum: loc=%p len=%d sum=%x\n" - , rom, len, sum); - if (EnforceChecksum) - return 0; - } - return 1; -} - -// Check if a valid option rom has a pnp struct; return it if so. -static struct pnp_data * -get_pnp_rom(struct rom_header *rom) -{ - struct pnp_data *pnp = (void*)((u8*)rom + rom->pnpoffset); - if (pnp->signature != PNP_SIGNATURE) - return NULL; - return pnp; -} - -// Check for multiple pnp option rom headers. -static struct pnp_data * -get_pnp_next(struct rom_header *rom, struct pnp_data *pnp) -{ - if (! pnp->nextoffset) - return NULL; - pnp = (void*)((u8*)rom + pnp->nextoffset); - if (pnp->signature != PNP_SIGNATURE) - return NULL; - return pnp; -} - -// Check if a valid option rom has a pci struct; return it if so. -static struct pci_data * -get_pci_rom(struct rom_header *rom) -{ - struct pci_data *pd = (void*)((u32)rom + rom->pcioffset); - if (pd->signature != PCI_ROM_SIGNATURE) - return NULL; - if (rom->pcioffset & 3) - dprintf(1, "WARNING! Found unaligned PCI rom (vd=%04x:%04x)\n" - , pd->vendor, pd->device); - return pd; -} - -// Run rom init code and note rom size. -static int -init_optionrom(struct rom_header *rom, u16 bdf, int isvga) -{ - if (! is_valid_rom(rom)) - return -1; - struct rom_header *newrom = rom_reserve(rom->size * 512); - if (!newrom) { - warn_noalloc(); - return -1; - } - if (newrom != rom) - memmove(newrom, rom, rom->size * 512); - - tpm_option_rom(newrom, rom->size * 512); - - if (isvga || get_pnp_rom(newrom)) - // Only init vga and PnP roms here. - callrom(newrom, bdf); - - return rom_confirm(newrom->size * 512); -} - -#define RS_PCIROM (1LL<<33) - -static void -setRomSource(u64 *sources, struct rom_header *rom, u64 source) -{ - if (sources) - sources[((u32)rom - BUILD_ROM_START) / OPTION_ROM_ALIGN] = source; -} - -static int -getRomPriority(u64 *sources, struct rom_header *rom, int instance) -{ - u64 source = sources[((u32)rom - BUILD_ROM_START) / OPTION_ROM_ALIGN]; - if (!source) - return -1; - if (source & RS_PCIROM) - return bootprio_find_pci_rom((void*)(u32)source, instance); - struct romfile_s *file = (void*)(u32)source; - return bootprio_find_named_rom(file->name, instance); -} - - -/**************************************************************** - * Roms in CBFS - ****************************************************************/ - -static struct rom_header * -deploy_romfile(struct romfile_s *file) -{ - u32 size = file->size; - struct rom_header *rom = rom_reserve(size); - if (!rom) { - warn_noalloc(); - return NULL; - } - int ret = file->copy(file, rom, size); - if (ret <= 0) - return NULL; - return rom; -} - -// Run all roms in a given CBFS directory. -static void -run_file_roms(const char *prefix, int isvga, u64 *sources) -{ - struct romfile_s *file = NULL; - for (;;) { - file = romfile_findprefix(prefix, file); - if (!file) - break; - struct rom_header *rom = deploy_romfile(file); - if (rom) { - setRomSource(sources, rom, (u32)file); - init_optionrom(rom, 0, isvga); - } - } -} - - -/**************************************************************** - * PCI roms - ****************************************************************/ - -// Verify device is a vga device with legacy address decoding enabled. -int -is_pci_vga(struct pci_device *pci) -{ - if (pci->class != PCI_CLASS_DISPLAY_VGA) - return 0; - u16 cmd = pci_config_readw(pci->bdf, PCI_COMMAND); - if (!(cmd & PCI_COMMAND_IO && cmd & PCI_COMMAND_MEMORY)) - return 0; - while (pci->parent) { - pci = pci->parent; - u32 ctrl = pci_config_readb(pci->bdf, PCI_BRIDGE_CONTROL); - if (!(ctrl & PCI_BRIDGE_CTL_VGA)) - return 0; - } - return 1; -} - -// Copy a rom to its permanent location below 1MiB -static struct rom_header * -copy_rom(struct rom_header *rom) -{ - u32 romsize = rom->size * 512; - struct rom_header *newrom = rom_reserve(romsize); - if (!newrom) { - warn_noalloc(); - return NULL; - } - dprintf(4, "Copying option rom (size %d) from %p to %p\n" - , romsize, rom, newrom); - iomemcpy(newrom, rom, romsize); - return newrom; -} - -// Map the option rom of a given PCI device. -static struct rom_header * -map_pcirom(struct pci_device *pci) -{ - u16 bdf = pci->bdf; - dprintf(6, "Attempting to map option rom on dev %02x:%02x.%x\n" - , pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf), pci_bdf_to_fn(bdf)); - - if ((pci->header_type & 0x7f) != PCI_HEADER_TYPE_NORMAL) { - dprintf(6, "Skipping non-normal pci device (type=%x)\n" - , pci->header_type); - return NULL; - } - - u32 orig = pci_config_readl(bdf, PCI_ROM_ADDRESS); - pci_config_writel(bdf, PCI_ROM_ADDRESS, ~PCI_ROM_ADDRESS_ENABLE); - u32 sz = pci_config_readl(bdf, PCI_ROM_ADDRESS); - - dprintf(6, "Option rom sizing returned %x %x\n", orig, sz); - orig &= ~PCI_ROM_ADDRESS_ENABLE; - if (!sz || sz == 0xffffffff) - goto fail; - - if (orig == sz || (u32)(orig + 4*1024*1024) < 20*1024*1024) { - // Don't try to map to a pci addresses at its max, in the last - // 4MiB of ram, or the first 16MiB of ram. - dprintf(6, "Preset rom address doesn't look valid\n"); - goto fail; - } - - // Looks like a rom - enable it. - pci_config_writel(bdf, PCI_ROM_ADDRESS, orig | PCI_ROM_ADDRESS_ENABLE); - - struct rom_header *rom = (void*)orig; - for (;;) { - dprintf(5, "Inspecting possible rom at %p (vd=%04x:%04x" - " bdf=%02x:%02x.%x)\n" - , rom, pci->vendor, pci->device - , pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf), pci_bdf_to_fn(bdf)); - if (rom->signature != OPTION_ROM_SIGNATURE) { - dprintf(6, "No option rom signature (got %x)\n", rom->signature); - goto fail; - } - struct pci_data *pd = get_pci_rom(rom); - if (! pd) { - dprintf(6, "No valid pci signature found\n"); - goto fail; - } - - if (pd->vendor == pci->vendor && pd->device == pci->device - && pd->type == PCIROM_CODETYPE_X86) - // A match - break; - dprintf(6, "Didn't match dev/ven (got %04x:%04x) or type (got %d)\n" - , pd->vendor, pd->device, pd->type); - if (pd->indicator & 0x80) { - dprintf(6, "No more images left\n"); - goto fail; - } - rom = (void*)((u32)rom + pd->ilen * 512); - } - - rom = copy_rom(rom); - pci_config_writel(bdf, PCI_ROM_ADDRESS, orig); - return rom; -fail: - // Not valid - restore original and exit. - pci_config_writel(bdf, PCI_ROM_ADDRESS, orig); - return NULL; -} - -// Attempt to map and initialize the option rom on a given PCI device. -static void -init_pcirom(struct pci_device *pci, int isvga, u64 *sources) -{ - u16 bdf = pci->bdf; - dprintf(4, "Attempting to init PCI bdf %02x:%02x.%x (vd %04x:%04x)\n" - , pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf), pci_bdf_to_fn(bdf) - , pci->vendor, pci->device); - - char fname[17]; - snprintf(fname, sizeof(fname), "pci%04x,%04x.rom" - , pci->vendor, pci->device); - struct romfile_s *file = romfile_find(fname); - struct rom_header *rom = NULL; - if (file) - rom = deploy_romfile(file); - else if (RunPCIroms > 1 || (RunPCIroms == 1 && isvga)) - rom = map_pcirom(pci); - if (! rom) - // No ROM present. - return; - setRomSource(sources, rom, RS_PCIROM | (u32)pci); - init_optionrom(rom, bdf, isvga); -} - - -/**************************************************************** - * Non-VGA option rom init - ****************************************************************/ - -void -optionrom_setup(void) -{ - if (! CONFIG_OPTIONROMS) - return; - - dprintf(1, "Scan for option roms\n"); - u64 sources[(BUILD_BIOS_ADDR - BUILD_ROM_START) / OPTION_ROM_ALIGN]; - memset(sources, 0, sizeof(sources)); - u32 post_vga = rom_get_last(); - - if (CONFIG_OPTIONROMS_DEPLOYED) { - // Option roms are already deployed on the system. - u32 pos = post_vga; - while (pos < rom_get_max()) { - int ret = init_optionrom((void*)pos, 0, 0); - if (ret) - pos += OPTION_ROM_ALIGN; - else - pos = rom_get_last(); - } - } else { - // Find and deploy PCI roms. - struct pci_device *pci; - foreachpci(pci) { - if (pci->class == PCI_CLASS_DISPLAY_VGA || pci->have_driver) - continue; - init_pcirom(pci, 0, sources); - } - - // Find and deploy CBFS roms not associated with a device. - run_file_roms("genroms/", 0, sources); - } - rom_reserve(0); - - // All option roms found and deployed - now build BEV/BCV vectors. - - u32 pos = post_vga; - while (pos < rom_get_last()) { - struct rom_header *rom = (void*)pos; - if (! is_valid_rom(rom)) { - pos += OPTION_ROM_ALIGN; - continue; - } - pos += ALIGN(rom->size * 512, OPTION_ROM_ALIGN); - struct pnp_data *pnp = get_pnp_rom(rom); - if (! pnp) { - // Legacy rom. - boot_add_bcv(FLATPTR_TO_SEG(rom), OPTION_ROM_INITVECTOR, 0 - , getRomPriority(sources, rom, 0)); - continue; - } - // PnP rom - check for BEV and BCV boot capabilities. - int instance = 0; - while (pnp) { - if (pnp->bev) - boot_add_bev(FLATPTR_TO_SEG(rom), pnp->bev, pnp->productname - , getRomPriority(sources, rom, instance++)); - else if (pnp->bcv) - boot_add_bcv(FLATPTR_TO_SEG(rom), pnp->bcv, pnp->productname - , getRomPriority(sources, rom, instance++)); - else - break; - pnp = get_pnp_next(rom, pnp); - } - } -} - - -/**************************************************************** - * VGA init - ****************************************************************/ - -int ScreenAndDebug; -struct rom_header *VgaROM; - -// Call into vga code to turn on console. -void -vgarom_setup(void) -{ - if (! CONFIG_OPTIONROMS) - return; - - dprintf(1, "Scan for VGA option rom\n"); - - // Load some config settings that impact VGA. - EnforceChecksum = romfile_loadint("etc/optionroms-checksum", 1); - S3ResumeVga = romfile_loadint("etc/s3-resume-vga-init", CONFIG_QEMU); - RunPCIroms = romfile_loadint("etc/pci-optionrom-exec", 2); - ScreenAndDebug = romfile_loadint("etc/screen-and-debug", 1); - - if (CONFIG_OPTIONROMS_DEPLOYED) { - // Option roms are already deployed on the system. - init_optionrom((void*)BUILD_ROM_START, 0, 1); - } else { - // Clear option rom memory - memset((void*)BUILD_ROM_START, 0, rom_get_max() - BUILD_ROM_START); - - // Find and deploy PCI VGA rom. - struct pci_device *pci; - foreachpci(pci) { - if (!is_pci_vga(pci)) - continue; - vgahook_setup(pci); - init_pcirom(pci, 1, NULL); - break; - } - - // Find and deploy CBFS vga-style roms not associated with a device. - run_file_roms("vgaroms/", 1, NULL); - } - rom_reserve(0); - - if (rom_get_last() == BUILD_ROM_START) - // No VGA rom found - return; - - VgaROM = (void*)BUILD_ROM_START; - enable_vga_console(); -} - -void -s3_resume_vga(void) -{ - if (!S3ResumeVga) - return; - if (!VgaROM || ! is_valid_rom(VgaROM)) - return; - callrom(VgaROM, 0); -} |