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x86: fsp: Pass mrc cache to fsp_init() and save it to gd after fsp_init()

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fsp_init() call has a parameter nvs_buf which is used by FSP as the
MRC cache but currently is blindly set to NULL. Retreive the MRC
cache from SPI flash and pass it to fsp_init() call. After the call,
save FSP produced MRC cache to SPI flash too.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2015-10-11 21:37:42 -07:00 • committed by Simon Glass
parent 4b9f6a669e
commit ff1e18af9d
2 changed files with 35 additions and 1 deletions
arch/x86/lib/fsp
fsp_common.cfsp_dram.c

30
arch/x86/lib/fsp/fsp_common.c
View file

@ -7,6 +7,7 @@
#include <common.h>
#include <errno.h>
#include <asm/io.h>
#include <asm/mrccache.h>
#include <asm/post.h>
#include <asm/processor.h>
#include <asm/fsp/fsp_support.h>
@ -54,15 +55,42 @@ void board_final_cleanup(void)
return;
}
static __maybe_unused void *fsp_prepare_mrc_cache(void)
{
struct mrc_data_container *cache;
struct mrc_region entry;
int ret;
ret = mrccache_get_region(NULL, &entry);
if (ret)
return NULL;
cache = mrccache_find_current(&entry);
if (!cache)
return NULL;
debug("%s: mrc cache at %p, size %x checksum %04x\n", __func__,
cache->data, cache->data_size, cache->checksum);
return cache->data;
}
int x86_fsp_init(void)
{
void *nvs;
if (!gd->arch.hob_list) {
#ifdef CONFIG_ENABLE_MRC_CACHE
nvs = fsp_prepare_mrc_cache();
#else
nvs = NULL;
#endif
/*
* The first time we enter here, call fsp_init().
* Note the execution does not return to this function,
* instead it jumps to fsp_continue().
*/
fsp_init(CONFIG_FSP_TEMP_RAM_ADDR, BOOT_FULL_CONFIG, NULL);
fsp_init(CONFIG_FSP_TEMP_RAM_ADDR, BOOT_FULL_CONFIG, nvs);
} else {
/*
* The second time we enter here, adjust the size of malloc()

6
arch/x86/lib/fsp/fsp_dram.c
View file

@ -7,6 +7,7 @@
#include <common.h>
#include <asm/fsp/fsp_support.h>
#include <asm/e820.h>
#include <asm/mrccache.h>
#include <asm/post.h>
DECLARE_GLOBAL_DATA_PTR;
@ -32,6 +33,11 @@ int dram_init(void)
gd->ram_size = ram_size;
post_code(POST_DRAM);
#ifdef CONFIG_ENABLE_MRC_CACHE
gd->arch.mrc_output = fsp_get_nvs_data(gd->arch.hob_list,
&gd->arch.mrc_output_len);
#endif
return 0;
}