// 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" // FARPTR_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;
u16 staticresource;
} PACKED;
-#define OPTIONROM_BDF_1 0x0000
-#define OPTIONROM_MEM_1 0x00000000
-#define OPTIONROM_BDF_2 0x0000
-#define OPTIONROM_MEM_2 0x00000000
-
#define OPTION_ROM_START 0xc0000
#define OPTION_ROM_SIGNATURE 0xaa55
#define OPTION_ROM_ALIGN 2048
#define OPTION_ROM_INITVECTOR offsetof(struct rom_header, initVector[0])
#define PCI_ROM_SIGNATURE 0x52494350 // PCIR
+#define PCIROM_CODETYPE_X86 0
// Next available position for an option rom.
static u32 next_rom;
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;
- // XXX - should call option rom in "big real mode".
- call16(&br);
+ 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));
}
// Verify that an option rom looks valid
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;
+}
+
+// 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 *pci = (struct pci_data *)((u32)rom + rom->pcioffset);
+ if (pci->signature != PCI_ROM_SIGNATURE)
+ return NULL;
+ 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))
+ if (IPL.count >= ARRAY_SIZE(IPL.table))
return;
- struct ipl_entry_s *ip = &ebda->ipl.table[ebda->ipl.count];
+ struct ipl_entry_s *ip = &IPL.table[IPL.count];
ip->type = IPL_TYPE_BEV;
ip->vector = (FARPTR_TO_SEG(rom) << 16) | pnp->bev;
if (desc)
ip->description = MAKE_FARPTR(FARPTR_TO_SEG(rom), desc);
- ebda->ipl.count++;
+ IPL.count++;
}
// Copy a rom to its permanent location below 1MiB
{
dprintf(6, "Attempting to map option rom on dev %x\n", bdf);
+ u8 htype = pci_config_readb(bdf, PCI_HEADER_TYPE);
+ if ((htype & 0x7f) != PCI_HEADER_TYPE_NORMAL) {
+ dprintf(6, "Skipping non-normal pci device (type=%x)\n", htype);
+ 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);
if (!sz || sz == 0xffffffff)
goto fail;
+ if (orig < 16*1024*1024) {
+ 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);
dprintf(6, "No option rom signature (got %x)\n", rom->signature);
goto fail;
}
- if (!rom->pcioffset) {
- dprintf(6, "No PCI offset\n");
- goto fail;
- }
- struct pci_data *pci = (struct pci_data *)((u32)rom + rom->pcioffset);
- if (pci->signature != PCI_ROM_SIGNATURE) {
- dprintf(6, "Invalid pci signature (got %x)\n", pci->signature);
+ struct pci_data *pci = get_pci_rom(rom);
+ if (! pci) {
+ dprintf(6, "No valid pci signature found\n");
goto fail;
}
+
u32 vd = (pci->device << 16) | pci->vendor;
- if (vd == vendev && pci->type == 0)
+ if (vd == vendev && pci->type == PCIROM_CODETYPE_X86)
// A match
break;
dprintf(6, "Didn't match vendev (got %x) or type (got %d)\n"
} else {
// Find and deploy PCI roms.
int bdf, max;
- foreachpci(bdf, max, 0) {
+ foreachpci(bdf, max) {
u16 v = pci_config_readw(bdf, PCI_CLASS_DEVICE);
- if (v == 0x0000 || v == 0xffff || v == PCI_CLASS_DISPLAY_VGA)
+ if (v == 0x0000 || v == 0xffff || v == PCI_CLASS_DISPLAY_VGA
+ || (CONFIG_ATA && v == PCI_CLASS_STORAGE_IDE))
continue;
init_optionrom(bdf);
}
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);
+ else
+ // Check for BCV (there may be multiple).
+ while (pnp && pnp->bcv) {
+ // Has BCV - run it now.
+ callrom(rom, pnp->bcv, 0);
+ pnp = get_pnp_next(rom, pnp);
+ }
}
}
next_rom += ALIGN(rom->size * 512, OPTION_ROM_ALIGN);
} else {
// Find and deploy PCI VGA rom.
- int bdf = pci_find_class(PCI_CLASS_DISPLAY_VGA, 0);
+ int bdf = pci_find_class(PCI_CLASS_DISPLAY_VGA);
if (bdf < 0)
// Device not found
return;
projects / seabios.git / blobdiff