diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2016-12-07 00:32:19 -0600 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2016-12-08 21:39:43 +0100 |
| commit | b21e362e93993a8879906cf3fa56586b84226920 (patch) | |
| tree | 0536129b69e5d52d35814f43f16db69d8a42e6e7 /src/arch/x86/cpu.c | |
| parent | 16bd2676ce1dcec342de19640c45bd7216ba70f1 (diff) | |
cpu/x86: allow AP callbacks after MP init
There are circumstances where the APs need to run a piece of
code later in the boot flow. The current MP init just parks
the APs after MP init is completed so there's not an opportunity
to target running a piece of code on all the APs at a later time.
Therefore, provide an option, PARALLEL_MP_AP_WORK, that allows
the APs to perform callbacks.
BUG=chrome-os-partner:60657
BRANCH=reef
Change-Id: I849ecfdd6641dd9424943e246317cd1996ef1ba6
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17745
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
Diffstat (limited to 'src/arch/x86/cpu.c')
| -rw-r--r-- | src/arch/x86/cpu.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/arch/x86/cpu.c b/src/arch/x86/cpu.c index fbd48b0c2b..1e74d0cd59 100644 --- a/src/arch/x86/cpu.c +++ b/src/arch/x86/cpu.c @@ -11,11 +11,13 @@ * GNU General Public License for more details. */ +#include <bootstate.h> #include <boot/coreboot_tables.h> #include <console/console.h> #include <cpu/cpu.h> #include <arch/io.h> #include <string.h> +#include <cpu/x86/mp.h> #include <cpu/x86/mtrr.h> #include <cpu/x86/msr.h> #include <cpu/x86/lapic.h> @@ -310,3 +312,14 @@ void lb_arch_add_records(struct lb_header *header) tsc_info->size = sizeof(*tsc_info); tsc_info->freq_khz = freq_khz; } + +void arch_bootstate_coreboot_exit(void) +{ + /* APs are already parked by existing infrastructure. */ + if (!IS_ENABLED(CONFIG_PARALLEL_MP_AP_WORK)) + return; + + /* APs are waiting for work. Last thing to do is park them. */ + if (mp_park_aps()) + printk(BIOS_ERR, "Parking APs failed.\n"); +} |