diff options
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/x86/Kconfig | 4 | ||||
| -rw-r--r-- | src/cpu/x86/mp_init.c | 7 |
2 files changed, 8 insertions, 3 deletions
diff --git a/src/cpu/x86/Kconfig b/src/cpu/x86/Kconfig index 6a3bbd8c0b..a5c2a4df47 100644 --- a/src/cpu/x86/Kconfig +++ b/src/cpu/x86/Kconfig @@ -173,7 +173,9 @@ config X86_AMD_INIT_SIPI help This option limits the number of SIPI signals sent during during the common AP setup. Intel documentation specifies an INIT SIPI SIPI - sequence, however this doesn't work on some AMD platforms. + sequence, however this doesn't work on some AMD platforms. These + newer AMD platforms don't need the 10ms wait between INIT and SIPI, + so skip that too to save some time. config SOC_SETS_MSRS bool diff --git a/src/cpu/x86/mp_init.c b/src/cpu/x86/mp_init.c index a3a6becad7..3eef355148 100644 --- a/src/cpu/x86/mp_init.c +++ b/src/cpu/x86/mp_init.c @@ -449,8 +449,11 @@ static int start_aps(struct bus *cpu_bus, int ap_count, atomic_t *num_aps) /* Send INIT IPI to all but self. */ lapic_send_ipi(LAPIC_DEST_ALLBUT | LAPIC_INT_ASSERT | LAPIC_DM_INIT, 0); - printk(BIOS_DEBUG, "Waiting for 10ms after sending INIT.\n"); - mdelay(10); + + if (!CONFIG(X86_AMD_INIT_SIPI)) { + printk(BIOS_DEBUG, "Waiting for 10ms after sending INIT.\n"); + mdelay(10); + } /* Send 1st SIPI */ if (lapic_busy()) { |