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Enable Intel PECI on Model 6fx CPUs 

Those CPUs support the PECI (Platform Environment Control
Interface), so enable it. This interface is commonly used
for tasks like fan control.

Change-Id: Id2dadc4821de8cc0b579e77235aa36892e57fd02
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1104
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: build bot (Jenkins)
This commit is contained in:
Sven Schnelle 2012-06-19 18:00:01 +02:00 committed by Peter Stuge
parent 1a7a7e610e
commit edac28ce65
1 changed files with 8 additions and 0 deletions
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8
src/cpu/intel/model_6fx/model_6fx_init.c
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@ -127,6 +127,8 @@ static void configure_c_states(void)
} }
#define IA32_MISC_ENABLE 0x1a0 #define IA32_MISC_ENABLE 0x1a0
#define IA32_PECI_CTL 0x5a0
static void configure_misc(void) static void configure_misc(void)
{ {
msr_t msr; msr_t msr;
@ -170,6 +172,12 @@ static void configure_misc(void)
msr.lo |= vid_max; msr.lo |= vid_max;
wrmsr(IA32_PERF_CTL, msr); wrmsr(IA32_PERF_CTL, msr);
/* Enable PECI */
msr = rdmsr(IA32_PECI_CTL);
msr.lo |= 1;
wrmsr(IA32_PECI_CTL, msr);
} }
#define PIC_SENS_CFG 0x1aa #define PIC_SENS_CFG 0x1aa