diff options
Diffstat (limited to 'resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0036-cpu-amd-fam10h-fam15h-Add-new-wait_ap_stopped-functi.patch')
| -rw-r--r-- | resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0036-cpu-amd-fam10h-fam15h-Add-new-wait_ap_stopped-functi.patch | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0036-cpu-amd-fam10h-fam15h-Add-new-wait_ap_stopped-functi.patch b/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0036-cpu-amd-fam10h-fam15h-Add-new-wait_ap_stopped-functi.patch new file mode 100644 index 0000000..ec82f70 --- /dev/null +++ b/resources/libreboot/patch/coreboot/369b561315ca68d0cdedc38208105a513c7139b5/grub/kcma-d8/0036-cpu-amd-fam10h-fam15h-Add-new-wait_ap_stopped-functi.patch @@ -0,0 +1,66 @@ +From 3b1c5530e745b77411f3a9db1872a8592ac79bf5 Mon Sep 17 00:00:00 2001 +From: Timothy Pearson <tpearson@raptorengineeringinc.com> +Date: Tue, 24 Nov 2015 14:12:02 -0600 +Subject: [PATCH 36/45] cpu/amd/fam10h-fam15h: Add new wait_ap_stopped function + +Under certain conditions, such as when microcode updates are +being performed, it is important to make sure all APs have +finished updates and are halted before continuing with the +boot process. + +Add a new wait_ap_stopped() function to allow for this +functionality to be added to the appropriate mainboard +romstage source files. + +Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> +--- + src/cpu/amd/family_10h-family_15h/init_cpus.c | 20 ++++++++++++++++++++ + src/include/cpu/amd/multicore.h | 1 + + 2 files changed, 21 insertions(+) + +diff --git a/src/cpu/amd/family_10h-family_15h/init_cpus.c b/src/cpu/amd/family_10h-family_15h/init_cpus.c +index e8e81d2..e2a1bf3 100644 +--- a/src/cpu/amd/family_10h-family_15h/init_cpus.c ++++ b/src/cpu/amd/family_10h-family_15h/init_cpus.c +@@ -299,6 +299,26 @@ void allow_all_aps_stop(u32 bsp_apicid) + lapic_write(LAPIC_MSG_REG, (bsp_apicid << 24) | F10_APSTATE_STOPPED); + } + ++static void wait_ap_stopped(u32 ap_apicid, void *gp) ++{ ++ u32 timeout; ++ timeout = wait_cpu_state(ap_apicid, F10_APSTATE_ASLEEP, F10_APSTATE_ASLEEP); ++ printk(BIOS_DEBUG, "* AP %02x", ap_apicid); ++ if (timeout) { ++ printk(BIOS_DEBUG, " timed out:%08x\n", timeout); ++ } else { ++ printk(BIOS_DEBUG, "stopped\n"); ++ } ++} ++ ++void wait_all_other_cores_stopped(u32 bsp_apicid) ++{ ++ // all aps other than core0 ++ printk(BIOS_DEBUG, "stopped ap apicid: "); ++ for_each_ap(bsp_apicid, 2, -1, wait_ap_stopped, (void *)0); ++ printk(BIOS_DEBUG, "\n"); ++} ++ + static void enable_apic_ext_id(u32 node) + { + u32 val; +diff --git a/src/include/cpu/amd/multicore.h b/src/include/cpu/amd/multicore.h +index b3a8237..0ddf866 100644 +--- a/src/include/cpu/amd/multicore.h ++++ b/src/include/cpu/amd/multicore.h +@@ -35,6 +35,7 @@ void amd_sibling_init(struct device *cpu); + void wait_all_core0_started(void); + void wait_all_other_cores_started(u32 bsp_apicid); + void wait_all_aps_started(u32 bsp_apicid); ++void wait_all_other_cores_stopped(uint32_t bsp_apicid); + void allow_all_aps_stop(u32 bsp_apicid); + #endif + u32 get_initial_apicid(void); +-- +2.1.4 + |