Commit fba7eac1 authored by Simon Glass's avatar Simon Glass
Browse files

x86: video: Add debug option to time the BIOS copy



This can be very slow - typically 80ms even on a fast machine since it uses
the SPI flash to read the data. Add an option to display the time taken.
Signed-off-by: default avatarSimon Glass <sjg@chromium.org>
Reviewed-by: default avatarBin Meng <bmeng.cn@gmail.com>
parent 23609c71
......@@ -156,6 +156,8 @@ int pci_rom_load(uint16_t class, struct pci_rom_header *rom_header,
target = (void *)PCI_VGA_RAM_IMAGE_START;
if (target != rom_header) {
ulong start = get_timer(0);
debug("Copying VGA ROM Image from %p to %p, 0x%x bytes\n",
rom_header, target, rom_size);
memcpy(target, rom_header, rom_size);
......@@ -163,6 +165,7 @@ int pci_rom_load(uint16_t class, struct pci_rom_header *rom_header,
printf("VGA ROM copy failed\n");
return -EFAULT;
}
debug("Copy took %lums\n", get_timer(start));
}
*ram_headerp = target;
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment