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authorYinghai Lu <yinghailu@gmail.com>2006-05-18 17:02:17 +0000
committerYinghai Lu <yinghailu@gmail.com>2006-05-18 17:02:17 +0000
commit9a8e36da2dcb67062c442795482095002587763f (patch)
treed07e15135ea20c9e19afa80655d2396194f5c1cd
parent2b396cdcf268c1c9865c51517461b031f8995917 (diff)
init the ECC for BSP and AP at the same time. So reduce init cpus time
from 2.1x to 1.1x or from 4x(SERIAL_CPU_INIT) to 1.1x git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2309 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
-rw-r--r--src/cpu/x86/lapic/lapic_cpu_init.c40
1 files changed, 32 insertions, 8 deletions
diff --git a/src/cpu/x86/lapic/lapic_cpu_init.c b/src/cpu/x86/lapic/lapic_cpu_init.c
index 279101b74b..4b5acad2c4 100644
--- a/src/cpu/x86/lapic/lapic_cpu_init.c
+++ b/src/cpu/x86/lapic/lapic_cpu_init.c
@@ -123,8 +123,6 @@ static int lapic_start_cpu(unsigned long apicid)
start_eip = (unsigned long)_secondary_start;
#endif
- printk_debug("start_eip=0x%08lx\n", start_eip);
-
num_starts = 2;
/*
@@ -299,9 +297,8 @@ void secondary_cpu_init(void)
stop_this_cpu();
}
-static void initialize_other_cpus(struct bus *cpu_bus)
+static void start_other_cpus(struct bus *cpu_bus, device_t bsp_cpu)
{
- int old_active_count, active_count;
device_t cpu;
/* Loop through the cpus once getting them started */
@@ -309,6 +306,11 @@ static void initialize_other_cpus(struct bus *cpu_bus)
if (cpu->path.type != DEVICE_PATH_APIC) {
continue;
}
+ #if SERIAL_CPU_INIT == 0
+ if(cpu==bsp_cpu) {
+ continue;
+ }
+ #endif
if (!cpu->enabled) {
continue;
@@ -330,6 +332,12 @@ static void initialize_other_cpus(struct bus *cpu_bus)
#endif
}
+}
+
+static void wait_other_cpus_stop(struct bus *cpu_bus)
+{
+ device_t cpu;
+ int old_active_count, active_count;
/* Now loop until the other cpus have finished initializing */
old_active_count = 1;
active_count = atomic_read(&active_cpus);
@@ -386,10 +394,26 @@ void initialize_cpus(struct bus *cpu_bus)
copy_secondary_start_to_1m_below(); // why here? In case some day we can start core1 in amd_sibling_init
#endif
- /* Initialize the bootstrap processor */
- cpu_initialize();
+#if CONFIG_SMP == 1
+ #if SERIAL_CPU_INIT == 0
+ /* start all aps at first, so we can init ECC all together */
+ start_other_cpus(cpu_bus, info->cpu);
+ #endif
+#endif
+
+ /* Initialize the bootstrap processor */
+ cpu_initialize();
+
+
+#if CONFIG_SMP == 1
+ #if SERIAL_CPU_INIT == 1
+ /* start all aps */
+ start_other_cpus(cpu_bus, info->cpu);
+ #endif
+
+ /* Now wait the rest of the cpus stop*/
+ wait_other_cpus_stop(cpu_bus);
+#endif
- /* Now initialize the rest of the cpus */
- initialize_other_cpus(cpu_bus);
}