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| author | Arthur Heymans <arthur@aheymans.xyz> | 2018-04-10 15:15:05 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-01-23 14:46:36 +0000 |
| commit | f26693283655eff7c31275621439f8416eeb3242 (patch) | |
| tree | 6c4533fcd186faed76e8805d5fa33b171447f67c /src/northbridge | |
| parent | 6336d4c48d2f85629ff668da36711ea794f70ab5 (diff) | |
| download | coreboot-f26693283655eff7c31275621439f8416eeb3242.tar.xz | |
nb/intel/i945: Use parallel MP init
Use the parallel mp init path to initialize AP's. This should result
in a moderate speedup.
Tested on Intel D945GCLF (1 core 2 threads), still boots fine and is
26ms faster compared to lapic_cpu_init.
This removes the option to disable HT siblings.
Change-Id: I955551b99e9cbc397f99c2a6bd355c6070390bcb
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/25600
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/intel/i945/Kconfig | 1 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/northbridge.c | 22 |
2 files changed, 2 insertions, 21 deletions
diff --git a/src/northbridge/intel/i945/Kconfig b/src/northbridge/intel/i945/Kconfig index 92bf65279d..996e1d9d4d 100644 --- a/src/northbridge/intel/i945/Kconfig +++ b/src/northbridge/intel/i945/Kconfig @@ -30,6 +30,7 @@ config NORTHBRIDGE_SPECIFIC_OPTIONS # dummy select POSTCAR_STAGE select POSTCAR_CONSOLE select SMM_TSEG + select PARALLEL_MP config NORTHBRIDGE_INTEL_SUBTYPE_I945GC def_bool n diff --git a/src/northbridge/intel/i945/northbridge.c b/src/northbridge/intel/i945/northbridge.c index 10a7ba4906..7c209dc32f 100644 --- a/src/northbridge/intel/i945/northbridge.c +++ b/src/northbridge/intel/i945/northbridge.c @@ -165,26 +165,6 @@ void northbridge_write_smram(u8 smram) pci_write_config8(dev, SMRAM, smram); } -/* - * Really doesn't belong here but will go away with parallel mp init, - * so let it be here for a while... - */ -int cpu_get_apic_id_map(int *apic_id_map) -{ - unsigned int i; - - /* Logical processors (threads) per core */ - const struct cpuid_result cpuid1 = cpuid(1); - /* Read number of cores. */ - const char cores = (cpuid1.ebx >> 16) & 0xf; - - /* TODO in parallel MP cpuid(1).ebx */ - for (i = 0; i < cores; i++) - apic_id_map[i] = i; - - return cores; -} - /* TODO We could determine how many PCIe busses we need in * the bar. For now that number is hardcoded to a max of 64. * See e7525/northbridge.c for an example. @@ -249,7 +229,7 @@ static const struct pci_driver mc_driver __pci_driver = { static void cpu_bus_init(struct device *dev) { - initialize_cpus(dev->link_list); + bsp_init_and_start_aps(dev->link_list); } static struct device_operations cpu_bus_ops = { |