// 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 GPLv3 license.
+// This file may be distributed under the terms of the GNU LGPLv3 license.
#include "bregs.h" // struct bregs
-#include "biosvar.h" // struct ipl_entry_s
+#include "farptr.h" // FLATPTR_TO_SEG
+#include "config.h" // CONFIG_*
#include "util.h" // dprintf
#include "pci.h" // pci_find_class
#include "pci_regs.h" // PCI_ROM_ADDRESS
#include "pci_ids.h" // PCI_CLASS_DISPLAY_VGA
+#include "boot.h" // IPL
/****************************************************************
* Definitions
****************************************************************/
-// $PnP string with special alignment in romlayout.S
-extern char pnp_string[];
-
struct rom_header {
u16 signature;
u8 size;
static void
callrom(struct rom_header *rom, u16 offset, u16 bdf)
{
- u16 seg = FARPTR_TO_SEG(rom);
- dprintf(1, "Running option rom at %x:%x\n", seg, offset);
+ 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.bx = 0xffff;
br.dx = 0xffff;
br.es = SEG_BIOS;
- br.di = (u32)pnp_string - BUILD_BIOS_ADDR;
+ br.di = get_pnp_offset();
br.cs = seg;
br.ip = offset;
call16big(&br);
debug_serial_setup();
+}
- if (GET_BDA(ebda_seg) != SEG_EBDA)
- BX_PANIC("Option rom at %x:%x attempted to move ebda from %x to %x\n"
- , seg, offset, SEG_EBDA, GET_BDA(ebda_seg));
+// 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((void*)rom, len);
+ 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);
get_pnp_rom(struct rom_header *rom)
{
struct pnp_data *pnp = (struct pnp_data *)((u8*)rom + rom->pnpoffset);
- if (pnp->signature != *(u32*)pnp_string)
+ 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 = (struct pnp_data *)((u8*)rom + pnp->nextoffset);
+ if (pnp->signature != PNP_SIGNATURE)
return NULL;
return pnp;
}
return pci;
}
-// Add a BEV vector for a given pnp compatible option rom.
-static void
-add_ipl(struct rom_header *rom, struct pnp_data *pnp)
-{
-#define ebda ((struct extended_bios_data_area_s *)MAKE_FARPTR(SEG_EBDA, 0))
-
- // Found a device that thinks it can boot the system. Record
- // its BEV and product name string.
-
- if (! CONFIG_BOOT)
- return;
-
- if (ebda->ipl.count >= ARRAY_SIZE(ebda->ipl.table))
- return;
-
- struct ipl_entry_s *ip = &ebda->ipl.table[ebda->ipl.count];
- ip->type = IPL_TYPE_BEV;
- ip->vector = (FARPTR_TO_SEG(rom) << 16) | pnp->bev;
-
- u16 desc = pnp->productname;
- if (desc)
- ip->description = MAKE_FARPTR(FARPTR_TO_SEG(rom), desc);
-
- ebda->ipl.count++;
-}
-
// Copy a rom to its permanent location below 1MiB
static struct rom_header *
copy_rom(struct rom_header *rom)
dprintf(1, "Option rom %p doesn't fit.\n", rom);
return NULL;
}
- dprintf(4, "Copying option rom from %p to %x\n", rom, next_rom);
+ dprintf(4, "Copying option rom (size %d) from %p to %x\n"
+ , romsize, rom, next_rom);
memcpy((void*)next_rom, rom, romsize);
return (struct rom_header *)next_rom;
}
// Check if an option rom is at a hardcoded location for a device.
static struct rom_header *
-lookup_hardcode(u16 bdf)
+lookup_hardcode(u32 vendev)
{
- if (OPTIONROM_BDF_1 && OPTIONROM_BDF_1 == bdf)
+ if (OPTIONROM_VENDEV_1
+ && ((OPTIONROM_VENDEV_1 >> 16)
+ | ((OPTIONROM_VENDEV_1 & 0xffff)) << 16) == vendev)
return copy_rom((struct rom_header *)OPTIONROM_MEM_1);
- else if (OPTIONROM_BDF_2 && OPTIONROM_BDF_2 == bdf)
+ if (OPTIONROM_VENDEV_2
+ && ((OPTIONROM_VENDEV_2 >> 16)
+ | ((OPTIONROM_VENDEV_2 & 0xffff)) << 16) == vendev)
return copy_rom((struct rom_header *)OPTIONROM_MEM_2);
- // XXX - check LAR when in coreboot?
- return NULL;
+ int ret = cbfs_copy_optionrom((void*)next_rom, BUILD_BIOS_ADDR - next_rom
+ , vendev);
+ if (ret < 0)
+ return NULL;
+ return (struct rom_header *)next_rom;
}
// Map the option rom of a given PCI device.
static struct rom_header *
-map_optionrom(u16 bdf)
+map_optionrom(u16 bdf, u32 vendev)
{
- dprintf(6, "Attempting to map option rom on dev %x\n", 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));
u8 htype = pci_config_readb(bdf, PCI_HEADER_TYPE);
if ((htype & 0x7f) != PCI_HEADER_TYPE_NORMAL) {
if (!sz || sz == 0xffffffff)
goto fail;
- if (orig < 16*1024*1024) {
+ 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);
- u32 vendev = pci_config_readl(bdf, PCI_VENDOR_ID);
struct rom_header *rom = (struct rom_header *)orig;
for (;;) {
- dprintf(5, "Inspecting possible rom at %p (vd=%x bdf=%x)\n"
+ dprintf(5, "Inspecting possible rom at %p (dv=%x bdf=%x)\n"
, rom, vendev, bdf);
if (rom->signature != OPTION_ROM_SIGNATURE) {
dprintf(6, "No option rom signature (got %x)\n", rom->signature);
if (vd == vendev && pci->type == PCIROM_CODETYPE_X86)
// A match
break;
- dprintf(6, "Didn't match vendev (got %x) or type (got %d)\n"
+ dprintf(6, "Didn't match dev/ven (got %x) or type (got %d)\n"
, vd, pci->type);
if (pci->indicator & 0x80) {
dprintf(6, "No more images left\n");
return NULL;
}
-// Attempt to map and initialize the option rom on a given PCI device.
+// Adjust for the size of an option rom; allow it to resize.
static struct rom_header *
-init_optionrom(u16 bdf)
+verifysize_optionrom(struct rom_header *rom, u16 bdf)
{
- dprintf(4, "Attempting to init PCI bdf %x\n", bdf);
- struct rom_header *rom = lookup_hardcode(bdf);
- if (! rom)
- rom = map_optionrom(bdf);
- if (! rom)
- // No ROM present.
- return NULL;
-
if (! is_valid_rom(rom))
return NULL;
return rom;
}
+// Attempt to map and initialize the option rom on a given PCI device.
+static struct rom_header *
+init_optionrom(u16 bdf)
+{
+ u32 vendev = pci_config_readl(bdf, PCI_VENDOR_ID);
+ dprintf(4, "Attempting to init PCI bdf %02x:%02x.%x (dev/ven %x)\n"
+ , pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf), pci_bdf_to_fn(bdf)
+ , vendev);
+ struct rom_header *rom = lookup_hardcode(vendev);
+ if (! rom)
+ rom = map_optionrom(bdf, vendev);
+ if (! rom)
+ // No ROM present.
+ return NULL;
+ return verifysize_optionrom(rom, bdf);
+}
+
/****************************************************************
* Non-VGA option rom init
continue;
init_optionrom(bdf);
}
+
+ // Find and deploy CBFS roms not associated with a device.
+ struct cbfs_file *tmp = NULL;
+ for (;;) {
+ tmp = cbfs_copy_gen_optionrom(
+ (void*)next_rom, BUILD_BIOS_ADDR - next_rom, tmp);
+ if (!tmp)
+ break;
+ verifysize_optionrom((void*)next_rom, 0);
+ }
}
// All option roms found and deployed - now build BEV/BCV vectors.
pos += ALIGN(rom->size * 512, OPTION_ROM_ALIGN);
struct pnp_data *pnp = get_pnp_rom(rom);
if (! pnp) {
- // Legacy rom - run init vector now.
- callrom(rom, OPTION_ROM_INITVECTOR, 0);
+ // Legacy rom.
+ add_bcv(FLATPTR_TO_SEG(rom), OPTION_ROM_INITVECTOR, 0);
continue;
}
// PnP rom.
if (pnp->bev)
// Can boot system - add to IPL list.
- add_ipl(rom, pnp);
- else if (pnp->bcv)
- // Has BCV - run it now.
- callrom(rom, pnp->bcv, 0);
+ add_bev(FLATPTR_TO_SEG(rom), pnp->bev, pnp->productname);
+ else
+ // Check for BCV (there may be multiple).
+ while (pnp && pnp->bcv) {
+ add_bcv(FLATPTR_TO_SEG(rom), pnp->bcv, pnp->productname);
+ pnp = get_pnp_next(rom, pnp);
+ }
}
}
projects / seabios.git / blobdiff