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authorTimothy Pearson <tpearson@raptorengineeringinc.com>2015-08-02 21:31:17 -0500
committerMartin Roth <martinroth@google.com>2015-11-20 16:30:08 +0100
commite536a4d91697fc49d865dfa5065d2cbb31cbc03f (patch)
tree6db84cb3d5524145f05544f1a7cb604e6ac15746 /src/cpu/amd
parent5bbc5e5e0d516ea1db958c96f82ea8fbea1bc858 (diff)
downloadcoreboot-e536a4d91697fc49d865dfa5065d2cbb31cbc03f.tar.xz
cpu/amd/fam10h-fam15h: Set northbridge throttle values
The existing code did not set the northbridge throttle values on Family 15h, leading to sporadic and random deadlocks in the crossbar per AMD notes. Properly set the northbridge throttle values on Family 15h. Change-Id: I6304b63708c65fedb9c2d46b8c862b7f0adf1102 Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> Reviewed-on: http://review.coreboot.org/12025 Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/cpu/amd')
-rw-r--r--src/cpu/amd/family_10h-family_15h/init_cpus.c21
-rw-r--r--src/cpu/amd/family_10h-family_15h/model_10xxx_init.c44
2 files changed, 45 insertions, 20 deletions
diff --git a/src/cpu/amd/family_10h-family_15h/init_cpus.c b/src/cpu/amd/family_10h-family_15h/init_cpus.c
index a421bfcc03..14d8642083 100644
--- a/src/cpu/amd/family_10h-family_15h/init_cpus.c
+++ b/src/cpu/amd/family_10h-family_15h/init_cpus.c
@@ -860,6 +860,7 @@ static u32 AMD_checkLinkType(u8 node, u8 link, u8 regoff)
else
linktype |= HTPHY_LINKTYPE_UNGANGED;
}
+
return linktype;
}
@@ -954,26 +955,6 @@ void cpuSetAMDMSR(uint8_t node_id)
}
AMD_Errata298();
- if (revision & AMD_FAM15_ALL) {
- uint32_t f5x80;
- uint8_t enabled;
- uint8_t compute_unit_count = 0;
- f5x80 = pci_read_config32(NODE_PCI(node_id, 5), 0x80);
- enabled = f5x80 & 0xf;
- if (enabled == 0x1)
- compute_unit_count = 1;
- if (enabled == 0x3)
- compute_unit_count = 2;
- if (enabled == 0x7)
- compute_unit_count = 3;
- if (enabled == 0xf)
- compute_unit_count = 4;
- msr = rdmsr(BU_CFG2);
- msr.lo &= ~(0x3 << 6); /* ThrottleNbInterface[1:0] */
- msr.lo |= (((compute_unit_count - 1) & 0x3) << 6);
- wrmsr(BU_CFG2, msr);
- }
-
/* Revision C0 and above */
if (revision & AMD_OR_C0) {
uint32_t f3x1fc = pci_read_config32(NODE_PCI(node_id, 3), 0x1fc);
diff --git a/src/cpu/amd/family_10h-family_15h/model_10xxx_init.c b/src/cpu/amd/family_10h-family_15h/model_10xxx_init.c
index 0a86966537..3bda14c95a 100644
--- a/src/cpu/amd/family_10h-family_15h/model_10xxx_init.c
+++ b/src/cpu/amd/family_10h-family_15h/model_10xxx_init.c
@@ -132,6 +132,50 @@ static void model_10xxx_init(device_t dev)
printk(BIOS_DEBUG, "siblings = %02d, ", siblings);
#endif
+ /* Set bus unit configuration */
+ if (is_fam15h()) {
+ uint32_t f5x80;
+ uint8_t enabled;
+ uint8_t compute_unit_count = 0;
+ f5x80 = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18 + id.nodeid, 5)), 0x80);
+ enabled = f5x80 & 0xf;
+ if (enabled == 0x1)
+ compute_unit_count = 1;
+ if (enabled == 0x3)
+ compute_unit_count = 2;
+ if (enabled == 0x7)
+ compute_unit_count = 3;
+ if (enabled == 0xf)
+ compute_unit_count = 4;
+ msr = rdmsr(BU_CFG2_MSR);
+ msr.lo &= ~(0x3 << 6); /* ThrottleNbInterface[1:0] */
+ msr.lo |= (((compute_unit_count - 1) & 0x3) << 6);
+ wrmsr(BU_CFG2_MSR, msr);
+ } else {
+ uint32_t f0x60;
+ uint32_t f0x160;
+ uint8_t core_count = 0;
+ uint8_t node_count = 0;
+ f0x60 = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18 + id.nodeid, 0)), 0x60);
+ core_count = (f0x60 >> 16) & 0x1f;
+ node_count = ((f0x60 >> 4) & 0x7) + 1;
+ if (is_gt_rev_d()) {
+ f0x160 = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18 + id.nodeid, 0)), 0x160);
+ core_count |= ((f0x160 >> 16) & 0x7) << 5;
+ }
+ core_count++;
+ core_count /= node_count;
+ msr = rdmsr(BU_CFG2_MSR);
+ if (is_gt_rev_d()) {
+ msr.hi &= ~(0x3 << (36 - 32)); /* ThrottleNbInterface[3:2] */
+ msr.hi |= ((((core_count - 1) >> 2) & 0x3) << (36 - 32));
+ }
+ msr.lo &= ~(0x3 << 6); /* ThrottleNbInterface[1:0] */
+ msr.lo |= (((core_count - 1) & 0x3) << 6);
+ msr.lo &= ~(0x1 << 24); /* WcPlusDis = 0 */
+ wrmsr(BU_CFG2_MSR, msr);
+ }
+
/* Disable Cf8ExtCfg */
msr = rdmsr(NB_CFG_MSR);
msr.hi &= ~(1 << (46 - 32));