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authorMarc Jones <marcj303@gmail.com>2009-01-06 16:45:42 +0000
committerMarc Jones <marc.jones@amd.com>2009-01-06 16:45:42 +0000
commit505aaf56e21b94e52cfdeb16b765163f7604e1aa (patch)
treeec774a5347a4d73c74f421fd46fe4ff29caa7aa2 /src/mainboard/amd
parentfdbb8d860af012718c311aaf14e2f73dfbc0dfeb (diff)
The ACPI PSS CPU Pstate table was calculating the frequency incorrectly for
revF CPUs. The 100MHz/200MHz stepping is already handled in the FID setting and doesn't need to be checked to set the fid_multiplier. The multiplier is always 100. Signed-off-by: Marc Jones <marcj303@gmail.com> Acked-by: zheng bao <zheng.bao@amd.com> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3847 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/mainboard/amd')
-rw-r--r--src/mainboard/amd/dbm690t/acpi_tables.c7
-rw-r--r--src/mainboard/amd/pistachio/acpi_tables.c7
2 files changed, 6 insertions, 8 deletions
diff --git a/src/mainboard/amd/dbm690t/acpi_tables.c b/src/mainboard/amd/dbm690t/acpi_tables.c
index eb3433cc61..987eeae8b8 100644
--- a/src/mainboard/amd/dbm690t/acpi_tables.c
+++ b/src/mainboard/amd/dbm690t/acpi_tables.c
@@ -258,12 +258,11 @@ u32 pstates_algorithm(acpi_header_t * dsdt)
return 0;
}
- /*get the multipier of the fid frequency */
+ /* Get the multipier of the fid frequency */
/*
- * In RevG, 100MHz step is added
+ * Fid multiplier is always 100 revF and revG.
*/
- cpuid1 = cpuid(0x80000007);
- fid_multiplier = ((cpuid1.edx & 0x40) >> 6) * 100;
+ fid_multiplier = 100;
/*
* Formula1: CPUFreq = FID * fid_multiplier + 800
diff --git a/src/mainboard/amd/pistachio/acpi_tables.c b/src/mainboard/amd/pistachio/acpi_tables.c
index eb3433cc61..dfb9167481 100644
--- a/src/mainboard/amd/pistachio/acpi_tables.c
+++ b/src/mainboard/amd/pistachio/acpi_tables.c
@@ -258,12 +258,11 @@ u32 pstates_algorithm(acpi_header_t * dsdt)
return 0;
}
- /*get the multipier of the fid frequency */
+ /* Get the multipier of the fid frequency */
/*
- * In RevG, 100MHz step is added
+ * Fid multiplier is always 100 revF and revG.
*/
- cpuid1 = cpuid(0x80000007);
- fid_multiplier = ((cpuid1.edx & 0x40) >> 6) * 100;
+ fid_multiplier = 100;
/*
* Formula1: CPUFreq = FID * fid_multiplier + 800