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| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-05-08 17:17:44 -0500 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2015-07-07 01:42:51 +0200 |
| commit | 066980cd32796ae5a5ff97dd024416ce5f9829fc (patch) | |
| tree | 66ea4bda03ee0c0632051e78af4bb97f856be3ea /src/cpu/amd | |
| parent | fb39f82116f0411ee85e3d91bfd97237c34debbb (diff) | |
cpu/amd/model_10xxx: Determine single-link status of each CPU in _PSD generator
The prior ACPI _PSD generator committed in ef33db01 incorrectly assumed the active
link count of each processor was identical. Detect the link count on each node
when generating the _PSD objects.
Change-Id: Ic8aaa0728a43936cd4c6e1ed590e01ba8f0fbf9b
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/10158
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/cpu/amd')
| -rw-r--r-- | src/cpu/amd/model_10xxx/powernow_acpi.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/src/cpu/amd/model_10xxx/powernow_acpi.c b/src/cpu/amd/model_10xxx/powernow_acpi.c index db428d3f50..98ef08a0e6 100644 --- a/src/cpu/amd/model_10xxx/powernow_acpi.c +++ b/src/cpu/amd/model_10xxx/powernow_acpi.c @@ -145,7 +145,10 @@ void amd_generate_powernow(u32 pcontrol_blk, u8 plen, u8 onlyBSP) printk(BIOS_INFO, "processor_brand=%s\n", processor_brand); uint32_t dtemp; + uint8_t node_index; uint8_t node_count; + uint8_t cores_per_node; + uint8_t total_core_count; /* * Based on the CPU socket type,cmp_cap and pwr_lmt , get the power limit. @@ -161,9 +164,10 @@ void amd_generate_powernow(u32 pcontrol_blk, u8 plen, u8 onlyBSP) /* Get number of nodes */ dtemp = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18, 0)), 0x60); node_count = ((dtemp & 0x70) >> 4) + 1; + cores_per_node = cmp_cap + 1; + /* Compute total number of cores installed in system */ - cmp_cap++; - cmp_cap *= node_count; + total_core_count = cores_per_node * node_count; Pstate_num = 0; @@ -191,10 +195,6 @@ void amd_generate_powernow(u32 pcontrol_blk, u8 plen, u8 onlyBSP) uint32_t core_voltage; /* multiplied by 10000 */ uint8_t single_link; - /* Determine if this is a single-link system */ - dtemp = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18, 0)), 0x80); - single_link = !!(((dtemp & 0xff00) >> 8) == 0); - /* Determine if this is a PVI or SVI system */ dtemp = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18, 3)), 0xA0); @@ -297,9 +297,15 @@ void amd_generate_powernow(u32 pcontrol_blk, u8 plen, u8 onlyBSP) char pscope[] = "\\_PR"; acpigen_write_scope(pscope); - for (index = 0; index < cmp_cap; index++) + for (index = 0; index < total_core_count; index++) { + /* Determine if this is a single-link processor */ + node_index = 0x18 + (index / cores_per_node); + dtemp = pci_read_config32(dev_find_slot(0, PCI_DEVFN(node_index, 0)), 0x80); + single_link = !!(((dtemp & 0xff00) >> 8) == 0); + write_pstates_for_core(Pstate_num, Pstate_feq, Pstate_power, Pstate_latency, Pstate_control, Pstate_status, index, pcontrol_blk, plen, onlyBSP, single_link); + } acpigen_pop_len(); } |