Patrick Georgi (patrick@georgi-clan.de) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/280
-gerrit
commit faa83fd3074371696f40629a174dad2e883a7553 Author: Patrick Georgi patrick@georgi-clan.de Date: Fri Oct 14 23:02:57 2011 +0200
Move linux 2.6.11 workaround to generic code
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 --- src/arch/x86/boot/mpspec.c | 15 +++++++--- src/mainboard/arima/hdama/mptable.c | 50 +---------------------------------- 2 files changed, 12 insertions(+), 53 deletions(-)
diff --git a/src/arch/x86/boot/mpspec.c b/src/arch/x86/boot/mpspec.c index 209e0bb..d519cfa 100644 --- a/src/arch/x86/boot/mpspec.c +++ b/src/arch/x86/boot/mpspec.c @@ -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; + } + } } }
diff --git a/src/mainboard/arima/hdama/mptable.c b/src/mainboard/arima/hdama/mptable.c index 19bbf25..466ba88 100644 --- a/src/mainboard/arima/hdama/mptable.c +++ b/src/mainboard/arima/hdama/mptable.c @@ -11,54 +11,6 @@ #define HT_INIT_CONTROL 0x6c #define HTIC_BIOSR_Detect (1<<5)
-/* If we assume a symmetric processor configuration we can - * get all of the information we need to write the processor - * entry from the bootstrap processor. - * Plus I don't think linux really even cares. - * Having the proper apicid's in the table so the non-bootstrap - * processors can be woken up should be enough. Linux-2.6.11 work-around. - */ -static void smp_write_processors_inorder(struct mp_config_table *mc) -{ - int boot_apic_id; - int order_id; - unsigned apic_version; - unsigned cpu_features; - unsigned cpu_feature_flags; - struct cpuid_result result; - device_t cpu; - - boot_apic_id = lapicid(); - apic_version = lapic_read(LAPIC_LVR) & 0xff; - result = cpuid(1); - cpu_features = result.eax; - cpu_feature_flags = result.edx; - /* order the output of the cpus to fix a bug in kernel 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) || - (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) - { - continue; - } - if (!cpu->enabled) { - continue; - } - cpu_flag = MPC_CPU_ENABLED; - if (boot_apic_id == cpu->path.apic.apic_id) { - cpu_flag = MPC_CPU_ENABLED | MPC_CPU_BOOTPROCESSOR; - } - 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; - } - } - } -} - static unsigned node_link_to_bus(unsigned node, unsigned link) { device_t dev; @@ -125,7 +77,7 @@ static void *smp_write_config_table(void *v)
mptable_init(mc, LAPIC_ADDR);
- smp_write_processors_inorder(mc); + smp_write_processors(mc);
apicid_base = max_apicid() + 1; apicid_8111 = apicid_base;
-
Patrick Georgi