diff options
| author | Raul E Rangel <rrangel@chromium.org> | 2021-11-01 13:40:14 -0600 |
|---|---|---|
| committer | Raul Rangel <rrangel@chromium.org> | 2021-11-15 16:16:02 +0000 |
| commit | a3811fe5e74575cc6173f8e2fc153c6f9884f89c (patch) | |
| tree | 20d4e580ec6e35202a54af1431b64cd75fed20fb | |
| parent | b5811c0b487ac6e5a12b69c5c2db7c6839f48fc0 (diff) | |
device/pci_rom: Add vga_oprom_preload
This method will allow preloading the VGA_BIOS_FILE. By preloading the
file, into cbfs_cache we reduce boot time. In the future we can also add
support for loading the second VGA_BIOS_FILE and the DGPU VGA_BIOS_FILE.
BUG=b:179699789
TEST=Boot guybrush to OS and verify 12 ms reduction in boot time
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: Icb54fe3a942e9507ff6f1173ba5620a8f4ce6549
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56581
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Rob Barnes <robbarnes@google.com>
| -rw-r--r-- | src/device/pci_rom.c | 15 | ||||
| -rw-r--r-- | src/include/device/pci_rom.h | 1 |
2 files changed, 16 insertions, 0 deletions
diff --git a/src/device/pci_rom.c b/src/device/pci_rom.c index 895c5b7737..70ffe48b26 100644 --- a/src/device/pci_rom.c +++ b/src/device/pci_rom.c @@ -16,6 +16,21 @@ void __weak map_oprom_vendev_rev(u32 *vendev, u8 *rev) { return; } u32 __weak map_oprom_vendev(u32 vendev) { return vendev; } +void vga_oprom_preload(void) +{ +/* The CONFIG_VGA_BIOS_ID symbol is only defined when VGA_BIOS is selected */ +#if CONFIG(VGA_BIOS) + const char name[] = "pci" CONFIG_VGA_BIOS_ID ".rom"; + + if (!CONFIG(CBFS_PRELOAD)) + return; + + printk(BIOS_DEBUG, "Preloading VGA ROM %s\n", name); + + cbfs_preload(name); +#endif +} + static void *cbfs_boot_map_optionrom(uint16_t vendor, uint16_t device) { char name[17] = "pciXXXX,XXXX.rom"; diff --git a/src/include/device/pci_rom.h b/src/include/device/pci_rom.h index 8b04d09987..25bca4003a 100644 --- a/src/include/device/pci_rom.h +++ b/src/include/device/pci_rom.h @@ -35,6 +35,7 @@ struct pci_data { uint16_t reserved_2; }; +void vga_oprom_preload(void); struct rom_header *pci_rom_probe(const struct device *dev); struct rom_header *pci_rom_load(struct device *dev, struct rom_header *rom_header); |