diff options
| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-10-31 15:21:24 -0500 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2015-11-03 16:42:45 +0100 |
| commit | c1daad2e6fdf7254312811478f6f77bcadb99e74 (patch) | |
| tree | d2d05a171db7aa393a60664dc4e03c1b61670257 /src/cpu | |
| parent | 6e99c59223cdde9ee00bdb3002114ab52a1facaf (diff) | |
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>
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/amd/model_fxx/powernow_acpi.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/src/cpu/amd/model_fxx/powernow_acpi.c b/src/cpu/amd/model_fxx/powernow_acpi.c index 1cb35efce2..d64c6d96ee 100644 --- a/src/cpu/amd/model_fxx/powernow_acpi.c +++ b/src/cpu/amd/model_fxx/powernow_acpi.c @@ -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); |