mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-24 20:54:24 +08:00
8bde7f776c
- remove trailing white space, trailing empty lines, C++ comments, etc.
- split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)
* Patches by Kenneth Johansson, 25 Jun 2003:
- major rework of command structure
(work done mostly by Michal Cendrowski and Joakim Kristiansen)
156 lines
3.9 KiB
C
156 lines
3.9 KiB
C
/*
|
|
* (C) Copyright 2002
|
|
* Daniel Engström, Omicron Ceti AB, daniel@omicron.se
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <pci.h>
|
|
#include <asm/io.h>
|
|
#include <asm/pci.h>
|
|
|
|
#ifdef CONFIG_PCI
|
|
#undef PCI_ROM_SCAN_VERBOSE
|
|
|
|
int pci_shadow_rom(pci_dev_t dev, unsigned char *dest)
|
|
{
|
|
struct pci_controller *hose;
|
|
int res = -1;
|
|
int i;
|
|
|
|
u32 rom_addr;
|
|
u32 addr_reg;
|
|
u32 size;
|
|
|
|
u16 vendor;
|
|
u16 device;
|
|
u32 class_code;
|
|
|
|
hose = pci_bus_to_hose(PCI_BUS(dev));
|
|
#if 0
|
|
printf("pci_shadow_rom() asked to shadow device %x to %x\n",
|
|
dev, (u32)dest);
|
|
#endif
|
|
pci_read_config_word(dev, PCI_VENDOR_ID, &vendor);
|
|
pci_read_config_word(dev, PCI_DEVICE_ID, &device);
|
|
pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_code);
|
|
|
|
class_code &= 0xffffff00;
|
|
class_code >>= 8;
|
|
|
|
#if 0
|
|
printf("PCI Header Vendor %04x device %04x class %06x\n",
|
|
vendor, device, class_code);
|
|
#endif
|
|
/* Enable the rom addess decoder */
|
|
pci_write_config_dword(dev, PCI_ROM_ADDRESS, PCI_ROM_ADDRESS_MASK);
|
|
pci_read_config_dword(dev, PCI_ROM_ADDRESS, &addr_reg);
|
|
|
|
if (!addr_reg) {
|
|
/* register unimplemented */
|
|
printf("pci_chadow_rom: device do not seem to have a rom\n");
|
|
return -1;
|
|
}
|
|
|
|
size = (~(addr_reg&PCI_ROM_ADDRESS_MASK))+1;
|
|
|
|
#if 0
|
|
printf("ROM is %d bytes\n", size);
|
|
#endif
|
|
rom_addr = pci_get_rom_window(hose, size);
|
|
#if 0
|
|
printf("ROM mapped at %x \n", rom_addr);
|
|
#endif
|
|
pci_write_config_dword(dev, PCI_ROM_ADDRESS,
|
|
pci_phys_to_mem(dev, rom_addr)
|
|
|PCI_ROM_ADDRESS_ENABLE);
|
|
|
|
|
|
for (i=rom_addr;i<rom_addr+size; i+=512) {
|
|
|
|
|
|
if (readw(i) == 0xaa55) {
|
|
u32 pci_data;
|
|
#ifdef PCI_ROM_SCAN_VERBOSE
|
|
printf("ROM signature found\n");
|
|
#endif
|
|
pci_data = readw(0x18+i);
|
|
pci_data += i;
|
|
|
|
if (0==memcmp((void*)pci_data, "PCIR", 4)) {
|
|
#ifdef PCI_ROM_SCAN_VERBOSE
|
|
printf("Fount PCI rom image at offset %d\n", i-rom_addr);
|
|
printf("Vendor %04x device %04x class %06x\n",
|
|
readw(pci_data+4), readw(pci_data+6),
|
|
readl(pci_data+0x0d)&0xffffff);
|
|
printf("%s\n",
|
|
(readw(pci_data+0x15) &0x80)?
|
|
"Last image":"More images follow");
|
|
switch (readb(pci_data+0x14)) {
|
|
case 0:
|
|
printf("X86 code\n");
|
|
break;
|
|
case 1:
|
|
printf("Openfirmware code\n");
|
|
break;
|
|
case 2:
|
|
printf("PARISC code\n");
|
|
break;
|
|
}
|
|
printf("Image size %d\n", readw(pci_data+0x10) * 512);
|
|
#endif
|
|
/* FixMe: I think we should compare the class code
|
|
* bytes as well but I have no reference on the
|
|
* exact order of these bytes in the PCI ROM header */
|
|
if (readw(pci_data+4) == vendor &&
|
|
readw(pci_data+6) == device &&
|
|
/* (readl(pci_data+0x0d)&0xffffff) == class_code && */
|
|
readb(pci_data+0x14) == 0 /* x86 code image */ ) {
|
|
#ifdef PCI_ROM_SCAN_VERBOSE
|
|
printf("Suitable ROM image found, copying\n");
|
|
#endif
|
|
memmove(dest, (void*)rom_addr, readw(pci_data+0x10) * 512);
|
|
res = 0;
|
|
break;
|
|
|
|
}
|
|
if (readw(pci_data+0x15) &0x80) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
#ifdef PCI_ROM_SCAN_VERBOSE
|
|
if (res) {
|
|
printf("No suitable image found\n");
|
|
}
|
|
#endif
|
|
/* disable PAR register and PCI device ROM address devocer */
|
|
pci_remove_rom_window(hose, rom_addr);
|
|
|
|
pci_write_config_dword(dev, PCI_ROM_ADDRESS, 0);
|
|
|
|
return res;
|
|
}
|
|
|
|
#endif
|