From fba7eac1c84aa674696fea55ac3a37f1e7156181 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Thu, 1 Jan 2015 16:18:01 -0700 Subject: 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: Simon Glass Reviewed-by: Bin Meng --- drivers/pci/pci_rom.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/pci_rom.c b/drivers/pci/pci_rom.c index 9808bb385e..5ba315b2ad 100644 --- a/drivers/pci/pci_rom.c +++ b/drivers/pci/pci_rom.c @@ -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; -- cgit v1.2.1