This does not need to be global across all functions in this file. Pass a parameter instead.
Signed-off-by: Simon Glass sjg@chromium.org Reviewed-by: Wolfgang Wallner wolfgang.wallner@br-automation.com Reviewed-by: Bin Meng bmeng.cn@gmail.com ---
(no changes since v3)
Changes in v3: - Update bsp_do_flight_plan() to say 'on the BSP'
arch/x86/cpu/mp_init.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-)
diff --git a/arch/x86/cpu/mp_init.c b/arch/x86/cpu/mp_init.c index 8b00d57c88..df43f71572 100644 --- a/arch/x86/cpu/mp_init.c +++ b/arch/x86/cpu/mp_init.c @@ -31,9 +31,6 @@
DECLARE_GLOBAL_DATA_PTR;
-/* Total CPUs include BSP */ -static int num_cpus; - /* This also needs to match the sipi.S assembly code for saved MSR encoding */ struct saved_msr { uint32_t index; @@ -384,13 +381,23 @@ static int start_aps(int num_aps, atomic_t *ap_count) return 0; }
-static int bsp_do_flight_plan(struct udevice *cpu, struct mp_flight_plan *plan) +/** + * bsp_do_flight_plan() - Do the flight plan on the BSP + * + * This runs the flight plan on the main CPU used to boot U-Boot + * + * @cpu: Device for the main CPU + * @plan: Flight plan to run + * @num_aps: Number of APs (CPUs other than the BSP) + * @returns 0 on success, -ETIMEDOUT if an AP failed to come up + */ +static int bsp_do_flight_plan(struct udevice *cpu, struct mp_flight_plan *plan, + int num_aps) { int i; int ret = 0; const int timeout_us = 100000; const int step_us = 100; - int num_aps = num_cpus - 1;
for (i = 0; i < plan->num_records; i++) { struct mp_flight_record *rec = &plan->records[i]; @@ -410,6 +417,7 @@ static int bsp_do_flight_plan(struct udevice *cpu, struct mp_flight_plan *plan)
release_barrier(&rec->barrier); } + return ret; }
@@ -454,7 +462,7 @@ static struct mp_flight_record mp_steps[] = {
int mp_init(void) { - int num_aps; + int num_aps, num_cpus; atomic_t *ap_count; struct udevice *cpu; int ret; @@ -516,7 +524,7 @@ int mp_init(void) }
/* Walk the flight plan for the BSP */ - ret = bsp_do_flight_plan(cpu, &mp_info); + ret = bsp_do_flight_plan(cpu, &mp_info, num_aps); if (ret) { debug("CPU init failed: err=%d\n", ret); return ret;