From eb9dc9e1f48f8f6bdb7e97a2d0ec4b5db93db0e0 Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Tue, 24 Nov 2015 14:11:53 -0600 Subject: [PATCH 17/45] cpu/amd/fam10h-fam15h: Correctly create APIC ID on single node systems The existing code generated an incorrect boot APIC ID from node and core number for single node packages, leading to a boot failure when the second node was installed. Properly generate the boot APIC ID from node and core number. Signed-off-by: Timothy Pearson --- src/cpu/amd/family_10h-family_15h/init_cpus.c | 6 +++++- src/northbridge/amd/amdfam10/northbridge.c | 4 +++- 2 files changed, 8 insertions(+), 2 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 1794072..5a67601 100644 --- a/src/cpu/amd/family_10h-family_15h/init_cpus.c +++ b/src/cpu/amd/family_10h-family_15h/init_cpus.c @@ -127,13 +127,17 @@ uint32_t get_boot_apic_id(uint8_t node, uint32_t core) { } } else { if (fam15h) { - ap_apicid = (node * (siblings + 1)) + core; + ap_apicid = 0; + ap_apicid |= (node & 0x7) << 4; /* Node ID */ + ap_apicid |= core & 0xf; /* Core ID */ } else { ap_apicid = node * (nb_cfg_54 ? (siblings + 1) : 1) + core * (nb_cfg_54 ? 1 : 64); } } + printk(BIOS_DEBUG, "%s: using %d as APIC ID for node %d, core %d\n", __func__, ap_apicid, node, core); + return ap_apicid; } diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c index b376171..35d0925 100644 --- a/src/northbridge/amd/amdfam10/northbridge.c +++ b/src/northbridge/amd/amdfam10/northbridge.c @@ -1636,7 +1636,9 @@ static void cpu_bus_scan(device_t dev) } } else { if (fam15h) { - apic_id = (i * (siblings + 1)) + j; + apic_id = 0; + apic_id |= (i & 0x7) << 4; /* Node ID */ + apic_id |= j & 0xf; /* Core ID */ } else { apic_id = i * (nb_cfg_54?(siblings+1):1) + j * (nb_cfg_54?1:64); // ? } -- 2.1.4