diff options
| author | Srinidhi Kaushik <srinidhi.n.kaushik@intel.com> | 2017-10-30 14:45:40 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-12-08 23:27:28 +0000 |
| commit | 9e0dd0169dca0943b6065f91058ee8a33671fea2 (patch) | |
| tree | fe7f511f7f130df0e7e76f6b305260a851382b7d | |
| parent | 5773c4ce026b23caf941af7933b43548ab2dea8f (diff) | |
src/mainboard/glkrvp: Turn on CPU fan
On GLK EC does not support temperature reads and does not control
the fans anymore, OS is responsible fan control through EC.
This hack enables running of the fan for boards without External EC.
Change-Id: I361e53d4fd53678f3abb8fe9862071aec6e149a7
Signed-off-by: Srinidhi N Kaushik <srinidhi.n.kaushik@intel.com>
Reviewed-on: https://review.coreboot.org/22235
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
| -rw-r--r-- | src/mainboard/intel/glkrvp/ec.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/mainboard/intel/glkrvp/ec.c b/src/mainboard/intel/glkrvp/ec.c index c17033832e..c6632cd8d0 100644 --- a/src/mainboard/intel/glkrvp/ec.c +++ b/src/mainboard/intel/glkrvp/ec.c @@ -72,5 +72,12 @@ void mainboard_ec_init(void) if (IS_ENABLED(CONFIG_GLK_INTEL_EC)) { printk(BIOS_ERR, "S3 Hack Enable ACPI mode: outb(0xaa,0x66)\n"); outb(0xaa, 0x66); + printk(BIOS_INFO, "Hack to turn on the CPU fan\n"); + outb(0x81, 0x66); + outb(0x44, 0x62); + outb(0x32, 0x62); + /* Need delay here, hence second outb */ + outb(0x32, 0x62); + outb(0x1a, 0x66); } } |