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x86: ivybridge: Only run the Video BIOS when video is enabled

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This takes about about 700ms on link when running natively and 900ms when
running using the emulator. It is a waste of time if video is not enabled,
so don't bother running the video BIOS in that case.

We could add a command to run the video BIOS later when needed, but this is
not considered at present.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2015-01-01 16:18:02 -07:00
parent fba7eac1c8
commit d19ee5c27e
1 changed files with 8 additions and 1 deletions
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9
arch/x86/cpu/ivybridge/gma.c
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@ -15,6 +15,7 @@
#include <asm/pci.h>
#include <asm/arch/pch.h>
#include <asm/arch/sandybridge.h>
#include <linux/kconfig.h>
struct gt_powermeter {
u16 reg;
@ -730,6 +731,9 @@ static int int15_handler(void)
int gma_func0_init(pci_dev_t dev, struct pci_controller *hose,
const void *blob, int node)
{
#ifdef CONFIG_VIDEO
ulong start;
#endif
void *gtt_bar;
u32 reg32;
int ret;
@ -745,8 +749,11 @@ int gma_func0_init(pci_dev_t dev, struct pci_controller *hose,
if (ret)
return ret;
#ifdef CONFIG_VIDEO
start = get_timer(0);
ret = pci_run_vga_bios(dev, int15_handler, false);
debug("BIOS ran in %lums\n", get_timer(start));
#endif
/* Post VBIOS init */
ret = gma_pm_init_post_vbios(gtt_bar, blob, node);
if (ret)