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cpuid: Add helper function for cpuid(1) functions

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This patch introduces 3 helper function for cpuid(1) :

1. cpu_get_cpuid() -> to get processor id (from cpuid.eax)
2. cpu_get_feature_flags_ecx -> to get processor feature flag (from cpuid.ecx)
3. cpu_get_feature_flags_edx -> to get processor feature flag (from cpuid.edx)

Above 3 helper functions are targeted to replace majority of cpuid(1)
references.

Change-Id: Ib96a7c79dadb1feff0b8d58aa408b355fbb3bc50
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/30123
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Subrata Banik
2018-12-10 14:11:35 +05:30
parent e3110b8620
commit 53b08c347f
21 changed files with 142 additions and 86 deletions
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8
src/northbridge/intel/sandybridge/raminit.c
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@ -19,6 +19,7 @@
#include <commonlib/region.h>
#include <bootmode.h>
#include <string.h>
#include <arch/cpu.h>
#include <arch/io.h>
#include <cbmem.h>
#include <halt.h>
@ -287,7 +288,6 @@ static void init_dram_ddr3(int min_tck, int s3resume)
spd_raw_data spds[4];
struct region_device rdev;
ramctr_timing *ctrl_cached;
struct cpuid_result cpures;
int err;
u32 cpu;
@ -369,8 +369,7 @@ static void init_dram_ddr3(int min_tck, int s3resume)
ctrl.tCK = min_tck;
/* Get architecture */
cpures = cpuid(1);
cpu = cpures.eax;
cpu = cpu_get_cpuid();
ctrl.sandybridge = IS_SANDY_CPU(cpu);
/* Get DDR3 SPD data */
@ -391,8 +390,7 @@ static void init_dram_ddr3(int min_tck, int s3resume)
ctrl.tCK = min_tck;
/* Get architecture */
cpures = cpuid(1);
cpu = cpures.eax;
cpu = cpu_get_cpuid();
ctrl.sandybridge = IS_SANDY_CPU(cpu);
/* Reset DDR3 frequency */