e7e6862a4c
* include/grub/efi/api.h (grub_efi_configuration_table): Add packed attribute, otherwise the size would be wrong for i386 platform. * include/grub/pci.h (grub_pci_read_word): New inline function. (grub_pci_read_byte): Likewise. (grub_pci_write): Likewise. (grub_pci_write_word): Likewise. (grub_pci_write_byte): Likewise. * include/grub/pci.h (grub_pci_iteratefunc_t): Add NESTED_FUNC_ATTR. * loader/i386/efi/linux.c (fake_bios_data): Moved to loadbios module. (find_framebuf): Scan pci to locate the frame buffer address. * commands/efi/fixvideo.c: New file. * commands/efi/loadbios.c: Likewise. * commands/memrw.c: Likewise. * util/grub-dumpbios.in: Likewise. * conf/common.rmk (grub-dumpbios): New utility. (pkglib_MODULES): New module memrw.mod. (memrw_mod_SOURCE): New macro. (memrw_mod_CFLAGS): Likewise. (memrw_mod_LDFLAGS): Likewise. * conf/i386-efi.rmk (pkglig_MODULES): New module loadbios.mod and fixvideo.mod. (loadbios_mod_SOURCE): New macro. (loadbios_mod_CFLAGS): Likewise. (loadbios_mod_LDFLAGS): Likewise. (fixvideo_mod_SOURCE): Likewise. (fixvideo_mod_CFLAGS): Likewise. (fixvideo_mod_LDFLAGS): Likewise. * conf/x86_64.rmk (pkglig_MODULES): New module loadbios.mod and fixvideo.mod. (loadbios_mod_SOURCE): New macro. (loadbios_mod_CFLAGS): Likewise. (loadbios_mod_LDFLAGS): Likewise. (fixvideo_mod_SOURCE): Likewise. (fixvideo_mod_CFLAGS): Likewise. (fixvideo_mod_LDFLAGS): Likewise.
110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
/* fixvideo.c - fix video problem in efi */
|
|
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2009 Free Software Foundation, Inc.
|
|
*
|
|
* GRUB 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 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <grub/dl.h>
|
|
#include <grub/misc.h>
|
|
#include <grub/file.h>
|
|
#include <grub/pci.h>
|
|
#include <grub/command.h>
|
|
|
|
static struct grub_video_patch
|
|
{
|
|
const char *name;
|
|
grub_uint32_t pci_id;
|
|
grub_uint32_t mmio_bar;
|
|
grub_uint32_t mmio_reg;
|
|
grub_uint32_t mmio_old;
|
|
} video_patches[] =
|
|
{
|
|
{"Intel 945GM", 0x27a28086, 0, 0x71184, 0x1000000}, /* DSPBBASE */
|
|
{"Intel 965GM", 0x2a028086, 0, 0x7119C, 0x1000000}, /* DSPBSURF */
|
|
{0, 0, 0, 0, 0}
|
|
};
|
|
|
|
static int NESTED_FUNC_ATTR
|
|
scan_card (int bus, int dev, int func, grub_pci_id_t pciid)
|
|
{
|
|
grub_pci_address_t addr;
|
|
|
|
addr = grub_pci_make_address (bus, dev, func, 2);
|
|
if (grub_pci_read_byte (addr + 3) == 0x3)
|
|
{
|
|
struct grub_video_patch *p = video_patches;
|
|
|
|
while (p->name)
|
|
{
|
|
if (p->pci_id == pciid)
|
|
{
|
|
grub_target_addr_t base;
|
|
|
|
grub_printf ("Found graphic card: %s\n", p->name);
|
|
addr += 8 + p->mmio_bar * 4;
|
|
base = grub_pci_read (addr);
|
|
if ((! base) || (base & GRUB_PCI_ADDR_SPACE_IO) ||
|
|
(base & GRUB_PCI_ADDR_MEM_PREFETCH))
|
|
grub_printf ("Invalid MMIO bar %d\n", p->mmio_bar);
|
|
else
|
|
{
|
|
base &= GRUB_PCI_ADDR_MEM_MASK;
|
|
base += p->mmio_reg;
|
|
|
|
if (*((volatile grub_uint32_t *) base) != p->mmio_old)
|
|
grub_printf ("Old value don't match\n");
|
|
else
|
|
{
|
|
*((volatile grub_uint32_t *) base) = 0;
|
|
if (*((volatile grub_uint32_t *) base))
|
|
grub_printf ("Set MMIO fails\n");
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
p++;
|
|
}
|
|
|
|
grub_printf ("Unknown graphic card: %x\n", pciid);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static grub_err_t
|
|
grub_cmd_fixvideo (grub_command_t cmd __attribute__ ((unused)),
|
|
int argc __attribute__ ((unused)),
|
|
char *argv[] __attribute__ ((unused)))
|
|
{
|
|
grub_pci_iterate (scan_card);
|
|
return 0;
|
|
}
|
|
|
|
static grub_command_t cmd_fixvideo;
|
|
|
|
GRUB_MOD_INIT(fixvideo)
|
|
{
|
|
(void) mod; /* To stop warning. */
|
|
cmd_fixvideo = grub_register_command ("fix_video", grub_cmd_fixvideo,
|
|
0, "Fix video problem.");
|
|
|
|
}
|
|
|
|
GRUB_MOD_FINI(fixvideo)
|
|
{
|
|
grub_unregister_command (cmd_fixvideo);
|
|
}
|