diff options
| author | Stefan Reinauer <reinauer@chromium.org> | 2014-01-22 15:16:30 -0800 |
|---|---|---|
| committer | Patrick Georgi <patrick@georgi-clan.de> | 2014-07-04 17:50:13 +0200 |
| commit | f1aabecaaccbac8ed575312f3801ec9de7e912a9 (patch) | |
| tree | 209f6649d938713814cd3ff407a8e8d39a353f4f /src/northbridge | |
| parent | 0089c2418b252483120f72a47955f771b3993a28 (diff) | |
intel/haswell: Allow pre-graphics delay
Some slow monitors/TVs can't wake up quickly enough for coreboot,
so when the VBIOS is run it won't detect them. Hence, add an option
to wait for a while before running the VBIOS.
BUG=none
BRANCH=panther
TEST=Boot to dev mode on one of the systems that exposed the problem
and see it go away.
Change-Id: Ib9524f1c7ee08bedf96a6468da8b4ccf712fe0e2
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/183545
Reviewed-by: Mohammed Habibulla <moch@google.com>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/6009
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/intel/haswell/Kconfig | 9 | ||||
| -rw-r--r-- | src/northbridge/intel/haswell/gma.c | 1 |
2 files changed, 10 insertions, 0 deletions
diff --git a/src/northbridge/intel/haswell/Kconfig b/src/northbridge/intel/haswell/Kconfig index 4b15c7bb9a..e8d84d1725 100644 --- a/src/northbridge/intel/haswell/Kconfig +++ b/src/northbridge/intel/haswell/Kconfig @@ -107,4 +107,13 @@ config CBFS_SIZE This option allows to limit the size of the CBFS portion in the firmware image. +config PRE_GRAPHICS_DELAY + int + default 0 + help + On some systems, coreboot boots so fast that connected monitors + (mostly TVs) won't be able to wake up fast enough to talk to the + VBIOS. On those systems we need to wait for a bit before executing + the VBIOS. + endif diff --git a/src/northbridge/intel/haswell/gma.c b/src/northbridge/intel/haswell/gma.c index 0c56f76018..95c7b2241d 100644 --- a/src/northbridge/intel/haswell/gma.c +++ b/src/northbridge/intel/haswell/gma.c @@ -414,6 +414,7 @@ static void gma_func0_init(struct device *dev) #endif if (! lightup_ok) { printk(BIOS_SPEW, "FUI did not run; using VBIOS\n"); + mdelay(CONFIG_PRE_GRAPHICS_DELAY); pci_dev_init(dev); } |