x86: mtrr: Use MP calls to list the MTRRs
Update the mtrr command to use mp_run_on_cpus() to obtain its information.
Since the selected CPU is the boot CPU this does not change the result,
but it sets the stage for supporting other CPUs.
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/cmd/x86/mtrr.c b/cmd/x86/mtrr.c
index 5d25c58..f357f58 100644
--- a/cmd/x86/mtrr.c
+++ b/cmd/x86/mtrr.c
@@ -5,7 +5,9 @@
#include <common.h>
#include <command.h>
+#include <log.h>
#include <asm/msr.h>
+#include <asm/mp.h>
#include <asm/mtrr.h>
static const char *const mtrr_type_name[MTRR_TYPE_COUNT] = {
@@ -18,19 +20,32 @@
"Back",
};
-static int do_mtrr_list(void)
+static void read_mtrrs(void *arg)
{
+ struct mtrr_info *info = arg;
+
+ mtrr_read_all(info);
+}
+
+static int do_mtrr_list(int cpu_select)
+{
+ struct mtrr_info info;
+ int ret;
int i;
printf("Reg Valid Write-type %-16s %-16s %-16s\n", "Base ||",
"Mask ||", "Size ||");
+ memset(&info, '\0', sizeof(info));
+ ret = mp_run_on_cpus(cpu_select, read_mtrrs, &info);
+ if (ret)
+ return log_msg_ret("run", ret);
for (i = 0; i < MTRR_COUNT; i++) {
const char *type = "Invalid";
uint64_t base, mask, size;
bool valid;
- base = native_read_msr(MTRR_PHYS_BASE_MSR(i));
- mask = native_read_msr(MTRR_PHYS_MASK_MSR(i));
+ base = info.mtrr[i].base;
+ mask = info.mtrr[i].mask;
size = ~mask & ((1ULL << CONFIG_CPU_ADDR_BITS) - 1);
size |= (1 << 12) - 1;
size += 1;
@@ -102,11 +117,13 @@
char *const argv[])
{
const char *cmd;
+ int cpu_select;
uint reg;
+ cpu_select = MP_SELECT_BSP;
cmd = argv[1];
if (argc < 2 || *cmd == 'l')
- return do_mtrr_list();
+ return do_mtrr_list(cpu_select);
argc -= 2;
argv += 2;
if (argc <= 0)