diff options
Diffstat (limited to 'src/cpu/amd/car/cache_as_ram.inc')
| -rw-r--r-- | src/cpu/amd/car/cache_as_ram.inc | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/cpu/amd/car/cache_as_ram.inc b/src/cpu/amd/car/cache_as_ram.inc index cbb1e39854..53056038b7 100644 --- a/src/cpu/amd/car/cache_as_ram.inc +++ b/src/cpu/amd/car/cache_as_ram.inc @@ -548,8 +548,23 @@ CAR_FAM10_ap: /* Fam10h NB config bit 54 was not set */ rolb %cl, %bl roll_cfg: + jmp_if_not_fam15h(ap_apicid_ready) + cmp $0x5, %ecx + jne ap_apicid_ready - /* Calculate stack pointer. */ + /* This is a multi-node CPU + * Adjust the maximum APIC ID to a more reasonable value + * given that no 32-core Family 15h processors exist + */ + movl %ebx, %ecx + and $0x0f, %ecx /* Get lower 4 bits of CPU number */ + and $0x60, %ebx /* Get node ID */ + shrl $0x1, %ebx /* Shift node ID part of APIC ID down by 1 */ + or %ecx, %ebx /* Recombine node ID and CPU number */ + +ap_apicid_ready: + + /* Calculate stack pointer using adjusted APIC ID stored in ebx */ movl $CacheSizeAPStack, %eax mull %ebx movl $(CacheBase + (CacheSize - (CacheSizeBSPStack + CacheSizeBSPSlush))), %esp |