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Move linux 2.6.11 workaround to generic code

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Linux 2.6.11 seems to require a certain order in CPUs listed in mptable,
so enforce it. This was only done on arima/hdama, but now is generic.
Unfortunately this is somewhat slow.

Change-Id: I85715ebae8a009cb816bc9ffd6372708f246bf66
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/280
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Patrick Georgi
2011-10-14 23:02:57 +02:00
committed by Stefan Reinauer
parent e572ef6136
commit 07b4215e11
2 changed files with 12 additions and 53 deletions
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15
src/arch/x86/boot/mpspec.c
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@@ -134,6 +134,7 @@ void smp_write_processor(struct mp_config_table *mc,
void smp_write_processors(struct mp_config_table *mc)
{
int boot_apic_id;
int order_id;
unsigned apic_version;
unsigned cpu_features;
unsigned cpu_feature_flags;
@@ -145,6 +146,8 @@ void smp_write_processors(struct mp_config_table *mc)
result = cpuid(1);
cpu_features = result.eax;
cpu_feature_flags = result.edx;
/* order the output of the cpus to fix a bug in kernel 2.6.11 */
for(order_id = 0;order_id <256; order_id++) {
for(cpu = all_devices; cpu; cpu = cpu->next) {
unsigned long cpu_flag;
if ((cpu->path.type != DEVICE_PATH_APIC) ||
@@ -159,10 +162,14 @@ void smp_write_processors(struct mp_config_table *mc)
if (boot_apic_id == cpu->path.apic.apic_id) {
cpu_flag = MPC_CPU_ENABLED | MPC_CPU_BOOTPROCESSOR;
}
smp_write_processor(mc,
cpu->path.apic.apic_id, apic_version,
cpu_flag, cpu_features, cpu_feature_flags
);
if(cpu->path.apic.apic_id == order_id) {
smp_write_processor(mc,
cpu->path.apic.apic_id, apic_version,
cpu_flag, cpu_features, cpu_feature_flags
);
break;
}
}
}
}