Kyösti Mälkki (kyosti.malkki@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/447
-gerrit
commit 25a3cef94d64e5aa954e9b61dd9432c1acc2d230 Author: Kyösti Mälkki kyosti.malkki@gmail.com Date: Tue Nov 22 19:44:45 2011 +0200
Bootblock does not need a unique boot_cpu()
Detection of a CPU being a BSP CPU is not dependent of the existence of northbridge and/or southbridge init code in the bootblock.
Even if CONFIG_LOGICAL_CPUS==0, boot_cpu() can get executed on an AP CPU of a hyper-threading CPU and needs to return actual BSP bit from MSR.
Change-Id: I9187f954bb357ba1dbd459cfe11cc96cb7567968 Signed-off-by: Kyösti Mälkki kyosti.malkki@gmail.com --- src/arch/x86/include/bootblock_common.h | 5 ----- src/cpu/x86/lapic/boot_cpu.c | 5 +++++ 2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/src/arch/x86/include/bootblock_common.h b/src/arch/x86/include/bootblock_common.h index 4c4a092..bd19682 100644 --- a/src/arch/x86/include/bootblock_common.h +++ b/src/arch/x86/include/bootblock_common.h @@ -1,9 +1,4 @@ -#if CONFIG_LOGICAL_CPUS && \ - (defined(CONFIG_BOOTBLOCK_NORTHBRIDGE_INIT) || defined(CONFIG_BOOTBLOCK_SOUTHBRIDGE_INIT)) #include <cpu/x86/lapic/boot_cpu.c> -#else -#define boot_cpu(x) 1 -#endif
#ifdef CONFIG_BOOTBLOCK_CPU_INIT #include CONFIG_BOOTBLOCK_CPU_INIT diff --git a/src/cpu/x86/lapic/boot_cpu.c b/src/cpu/x86/lapic/boot_cpu.c index bca73e1..87418d0 100644 --- a/src/cpu/x86/lapic/boot_cpu.c +++ b/src/cpu/x86/lapic/boot_cpu.c @@ -1,5 +1,6 @@ #include <cpu/x86/msr.h>
+#if CONFIG_SMP static int boot_cpu(void) { int bsp; @@ -8,3 +9,7 @@ static int boot_cpu(void) bsp = !!(msr.lo & (1 << 8)); return bsp; } +#else +#define boot_cpu(x) 1 +#endif +