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| author | Simon Glass <sjg@chromium.org> | 2015-01-01 16:18:01 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-01-13 07:24:59 -0800 |
| commit | fba7eac1c84aa674696fea55ac3a37f1e7156181 (patch) | |
| tree | e82349763dfc4754ed822f4061b0287f67d78337 | |
| parent | 23609c71dc0c4a433b7189308cda25d1b9e70c43 (diff) | |
| download | u-boot-imx-fba7eac1c84aa674696fea55ac3a37f1e7156181.zip u-boot-imx-fba7eac1c84aa674696fea55ac3a37f1e7156181.tar.gz u-boot-imx-fba7eac1c84aa674696fea55ac3a37f1e7156181.tar.bz2 | |
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 <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| -rw-r--r-- | drivers/pci/pci_rom.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/pci_rom.c b/drivers/pci/pci_rom.c index 9808bb3..5ba315b 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; |