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cpu/amd/model_fxx: Backport PowerNow! core count fix from Family 10h 

The K8 PowerNow! state generator does not generate _PSS objects
for nodes other than the first CPU package.  This patch backports
the PowerNow! core count fixes for Family 10h to the K8 CPUs.

Change-Id: I7b411ab75155dfb4bf51ae04301aa16fb2ae89f3
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/12286
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Timothy Pearson 2015-10-31 15:21:24 -05:00 committed by Martin Roth
parent 6e99c59223
commit c1daad2e6f
1 changed files with 17 additions and 4 deletions
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21
src/cpu/amd/model_fxx/powernow_acpi.c
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@ -100,6 +100,10 @@ static void pstates_algorithm(u32 pcontrol_blk, u8 plen, u8 onlyBSP)
u8 cmp_cap, pwr_lmt;
u32 power_limit = 0;
u8 index;
uint8_t node_count;
uint8_t cores_per_node;
uint32_t total_core_count;
uint32_t dword;
msr_t msr;
u32 fid_multiplier;
static const struct power_limit_encoding TDP[] = {
@ -156,9 +160,18 @@ static void pstates_algorithm(u32 pcontrol_blk, u8 plen, u8 onlyBSP)
* cmp_cap : 0x0 SingleCore ; 0x1 DualCore
*/
printk(BIOS_INFO, "Pstates Algorithm ...\n");
cmp_cap =
(pci_read_config16(dev_find_slot(0, PCI_DEVFN(0x18, 3)), 0xE8) &
0x3000) >> 12;
/* Get number of cores */
dword = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18, 3)), 0xe8);
cmp_cap = (dword & 0x3000) >> 12;
/* Get number of nodes */
dword = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18, 0)), 0x60);
node_count = ((dword & 0x70) >> 4) + 1;
cores_per_node = cmp_cap + 1;
/* Compute total number of cores installed in system */
total_core_count = cores_per_node * node_count;
cpuid1 = cpuid(0x80000001);
pwr_lmt = ((cpuid1.ebx & 0x1C0) >> 5) | ((cpuid1.ebx & 0x4000) >> 14);
for (index = 0; index < ARRAY_SIZE(TDP); index++)
@ -360,7 +373,7 @@ write_pstates:
(0x0 << 18) | /* MVS */
(0x5 << 11); /* VST */
for (index = 0; index < (cmp_cap + 1); index++) {
for (index = 0; index < total_core_count; index++) {
write_pstates_for_core(Pstate_num, Pstate_feq, Pstate_vid,
Pstate_fid, Pstate_power, index,
pcontrol_blk, plen, onlyBSP, control);