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x86: Add a new global_data member for the cache record

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At present we reuse the mrc_output char * to also point to the cache
record after it has been set up. This is confusing and doesn't save much
data space.

Add a new mrc_cache member instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2019-12-06 21:42:05 -07:00 committed by Bin Meng
parent 506f224977
commit 37a508f8b7
2 changed files with 7 additions and 6 deletions
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2
arch/x86/include/asm/global_data.h
View file

@ -10,6 +10,7 @@
#ifndef __ASSEMBLY__
#include <asm/processor.h>
#include <asm/mrccache.h>
enum pei_boot_mode_t {
PEI_BOOT_NONE = 0,
@ -93,6 +94,7 @@ struct arch_global_data {
/* MRC training data to save for the next boot */
char *mrc_output;
unsigned int mrc_output_len;
struct mrc_data_container *mrc_cache;
ulong table; /* Table pointer from previous loader */
int turbo_state; /* Current turbo state */
struct irq_routing_table *pirq_routing_table;

11
arch/x86/lib/mrccache.c
View file

@ -188,8 +188,7 @@ static void mrccache_setup(void *data)
cache->reserved = 0;
memcpy(cache->data, gd->arch.mrc_output, cache->data_size);
/* gd->arch.mrc_output now points to the container */
gd->arch.mrc_output = (char *)cache;
gd->arch.mrc_cache = cache;
}
int mrccache_reserve(void)
@ -255,7 +254,7 @@ int mrccache_get_region(struct udevice **devp, struct mrc_region *entry)
int mrccache_save(void)
{
struct mrc_data_container *data;
struct mrc_data_container *cache;
struct mrc_region entry;
struct udevice *sf;
int ret;
@ -271,10 +270,10 @@ int mrccache_save(void)
ret = device_probe(sf);
if (ret)
goto err_entry;
data = (struct mrc_data_container *)gd->arch.mrc_output;
ret = mrccache_update(sf, &entry, data);
cache = gd->arch.mrc_cache;
ret = mrccache_update(sf, &entry, cache);
if (!ret) {
debug("Saved MRC data with checksum %04x\n", data->checksum);
debug("Saved MRC data with checksum %04x\n", cache->checksum);
} else if (ret == -EEXIST) {
debug("MRC data is the same as last time, skipping save\n");
ret = 0;