x86: Move MP code into mp_init
At present the 'flight plan' for CPUs is passed into mp_init. But it is
always the same. Move it into the mp_init file so everything is in one
place. Also drop the SMI function since it does nothing. If we implement
SMIs, more refactoring will be needed anyway.
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>
diff --git a/arch/x86/cpu/i386/cpu.c b/arch/x86/cpu/i386/cpu.c
index a6a6afe..55a0907 100644
--- a/arch/x86/cpu/i386/cpu.c
+++ b/arch/x86/cpu/i386/cpu.c
@@ -21,6 +21,7 @@
#include <common.h>
#include <cpu_func.h>
#include <init.h>
+#include <log.h>
#include <malloc.h>
#include <spl.h>
#include <asm/control_regs.h>
@@ -631,29 +632,14 @@
}
#ifdef CONFIG_SMP
-static int enable_smis(struct udevice *cpu, void *unused)
-{
- return 0;
-}
-
-static struct mp_flight_record mp_steps[] = {
- MP_FR_BLOCK_APS(mp_init_cpu, NULL, mp_init_cpu, NULL),
- /* Wait for APs to finish initialization before proceeding */
- MP_FR_BLOCK_APS(NULL, NULL, enable_smis, NULL),
-};
-
int x86_mp_init(void)
{
- struct mp_params mp_params;
-
- mp_params.parallel_microcode_load = 0,
- mp_params.flight_plan = &mp_steps[0];
- mp_params.num_records = ARRAY_SIZE(mp_steps);
- mp_params.microcode_pointer = 0;
+ int ret;
- if (mp_init(&mp_params)) {
+ ret = mp_init();
+ if (ret) {
printf("Warning: MP init failure\n");
- return -EIO;
+ return log_ret(ret);
}
return 0;
diff --git a/arch/x86/cpu/mp_init.c b/arch/x86/cpu/mp_init.c
index c25d17c..831fd70 100644
--- a/arch/x86/cpu/mp_init.c
+++ b/arch/x86/cpu/mp_init.c
@@ -41,6 +41,9 @@
uint32_t hi;
} __packed;
+static struct mp_flight_record mp_steps[] = {
+ MP_FR_BLOCK_APS(mp_init_cpu, NULL, mp_init_cpu, NULL),
+};
struct mp_flight_plan {
int num_records;
@@ -372,7 +375,7 @@
return 0;
}
-static int bsp_do_flight_plan(struct udevice *cpu, struct mp_params *mp_params)
+static int bsp_do_flight_plan(struct udevice *cpu, struct mp_flight_plan *plan)
{
int i;
int ret = 0;
@@ -380,8 +383,8 @@
const int step_us = 100;
int num_aps = num_cpus - 1;
- for (i = 0; i < mp_params->num_records; i++) {
- struct mp_flight_record *rec = &mp_params->flight_plan[i];
+ for (i = 0; i < plan->num_records; i++) {
+ struct mp_flight_record *rec = &plan->records[i];
/* Wait for APs if the record is not released */
if (atomic_read(&rec->barrier) == 0) {
@@ -420,7 +423,7 @@
return 0;
}
-int mp_init(struct mp_params *p)
+int mp_init(void)
{
int num_aps;
atomic_t *ap_count;
@@ -445,11 +448,6 @@
return ret;
}
- if (p == NULL || p->flight_plan == NULL || p->num_records < 1) {
- printf("Invalid MP parameters\n");
- return -EINVAL;
- }
-
num_cpus = cpu_get_count(cpu);
if (num_cpus < 0) {
debug("Cannot get number of CPUs: err=%d\n", num_cpus);
@@ -464,8 +462,8 @@
debug("Warning: Device tree does not describe all CPUs. Extra ones will not be started correctly\n");
/* Copy needed parameters so that APs have a reference to the plan */
- mp_info.num_records = p->num_records;
- mp_info.records = p->flight_plan;
+ mp_info.num_records = ARRAY_SIZE(mp_steps);
+ mp_info.records = mp_steps;
/* Load the SIPI vector */
ret = load_sipi_vector(&ap_count, num_cpus);
@@ -489,7 +487,7 @@
}
/* Walk the flight plan for the BSP */
- ret = bsp_do_flight_plan(cpu, p);
+ ret = bsp_do_flight_plan(cpu, &mp_info);
if (ret) {
debug("CPU init failed: err=%d\n", ret);
return ret;