diff options
| author | Stefan Reinauer <reinauer@chromium.org> | 2012-04-03 16:17:11 -0700 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2012-04-06 18:47:01 +0200 |
| commit | 2bdfb48b13ab5c392ef2b1dd9a8bfda6c90b2e18 (patch) | |
| tree | 291ed76f89857c51f51f2a6f7e078df4ee86c162 /src | |
| parent | f8c7c2396eb843b17fd32d19bd9e481e088cee57 (diff) | |
Fixes and Sandybridge support for lapic cpu init
- preprocessor macros should not use defined(CONFIG_*) but
just CONFIG_*
- drop AMD CPU model 14XXX config variable use. Those do not exist.
- skip some delays on Sandybridge systems
- Count how long we're waiting for each AP to stop
- Skip speedstep specific CPU entries
Change-Id: I13db384ba4e28acbe7f0f8c9cd169954b39f167d
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/871
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/cpu/x86/lapic/lapic_cpu_init.c | 15 | ||||
| -rw-r--r-- | src/include/cpu/intel/speedstep.h | 3 |
2 files changed, 14 insertions, 4 deletions
diff --git a/src/cpu/x86/lapic/lapic_cpu_init.c b/src/cpu/x86/lapic/lapic_cpu_init.c index ed9940c4ac..2ac9093211 100644 --- a/src/cpu/x86/lapic/lapic_cpu_init.c +++ b/src/cpu/x86/lapic/lapic_cpu_init.c @@ -14,6 +14,7 @@ #include <smp/atomic.h> #include <smp/spinlock.h> #include <cpu/cpu.h> +#include <cpu/intel/speedstep.h> #if CONFIG_SMP == 1 /* This is a lot more paranoid now, since Linux can NOT handle @@ -108,7 +109,7 @@ static int lapic_start_cpu(unsigned long apicid) } return 0; } -#if !defined (CONFIG_CPU_AMD_MODEL_10XXX) && !defined (CONFIG_CPU_AMD_MODEL_14XXX) +#if !CONFIG_CPU_AMD_MODEL_10XXX && !CONFIG_CPU_INTEL_MODEL_206AX mdelay(10); #endif @@ -136,7 +137,7 @@ static int lapic_start_cpu(unsigned long apicid) start_eip = get_valid_start_eip((unsigned long)_secondary_start); -#if !defined (CONFIG_CPU_AMD_MODEL_10XXX) && !defined (CONFIG_CPU_AMD_MODEL_14XXX) +#if !CONFIG_CPU_AMD_MODEL_10XXX num_starts = 2; #else num_starts = 1; @@ -269,7 +270,7 @@ int start_cpu(device_t cpu) break; } udelay(10); - } + } } secondary_stack = 0; spin_unlock(&start_cpu_lock); @@ -446,6 +447,8 @@ static void wait_other_cpus_stop(struct bus *cpu_bus) { device_t cpu; int old_active_count, active_count; + long loopcount = 0; + /* Now loop until the other cpus have finished initializing */ old_active_count = 1; active_count = atomic_read(&active_cpus); @@ -456,17 +459,21 @@ static void wait_other_cpus_stop(struct bus *cpu_bus) } udelay(10); active_count = atomic_read(&active_cpus); + loopcount++; } for(cpu = cpu_bus->children; cpu; cpu = cpu->sibling) { if (cpu->path.type != DEVICE_PATH_APIC) { continue; } + if (cpu->path.apic.apic_id == SPEEDSTEP_APIC_MAGIC) { + continue; + } if (!cpu->initialized) { printk(BIOS_ERR, "CPU 0x%02x did not initialize!\n", cpu->path.apic.apic_id); } } - printk(BIOS_DEBUG, "All AP CPUs stopped\n"); + printk(BIOS_DEBUG, "All AP CPUs stopped (%ld loops)\n", loopcount); } #else /* CONFIG_SMP */ diff --git a/src/include/cpu/intel/speedstep.h b/src/include/cpu/intel/speedstep.h index 0fa5244181..00a5b9b87d 100644 --- a/src/include/cpu/intel/speedstep.h +++ b/src/include/cpu/intel/speedstep.h @@ -19,6 +19,9 @@ * MA 02110-1301 USA */ +/* Magic value used to locate speedstep configuration in the device tree */ +#define SPEEDSTEP_APIC_MAGIC 0xACAC + /* MWAIT coordination I/O base address. This must match * the \_PR_.CPU0 PM base address. */ |