diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/cpu/qemu/pci.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/arch/x86/cpu/qemu/pci.c b/arch/x86/cpu/qemu/pci.c index d50ab75..ac9c056 100644 --- a/arch/x86/cpu/qemu/pci.c +++ b/arch/x86/cpu/qemu/pci.c @@ -6,6 +6,7 @@ #include <common.h> #include <pci.h> +#include <pci_rom.h> DECLARE_GLOBAL_DATA_PTR; @@ -45,5 +46,26 @@ void board_pci_setup_hose(struct pci_controller *hose) int board_pci_post_scan(struct pci_controller *hose) { - return 0; + int ret = 0; + ulong start; + pci_dev_t bdf; + struct pci_device_id graphic_card[] = { { 0x1234, 0x1111 } }; + + /* + * QEMU emulated graphic card shows in the PCI configuration space with + * PCI vendor id and device id as an artificial pair 0x1234:0x1111. + * It is on PCI bus 0, function 0, but device number is not consistent + * for the two x86 targets it supports. For i440FX and PIIX chipset + * board, it shows as device 2, while for Q35 and ICH9 chipset board, + * it shows as device 1. Here we locate its bdf at run-time based on + * its vendor id and device id pair so we can support both boards. + */ + bdf = pci_find_devices(graphic_card, 0); + if (bdf != -1) { + start = get_timer(0); + ret = pci_run_vga_bios(bdf, NULL, PCI_ROM_USE_NATIVE); + debug("BIOS ran in %lums\n", get_timer(start)); + } + + return ret; } |