New patch to review for coreboot: soc/intel/apollolake: Enabling using of MRC data when available

[Andrey Petrov]

Andrey Petrov ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14253

-gerrit

commit ec882a9104d29f1349255dd6713500705eccee8f
Author: Shaunak Saha 
Date:   Mon Apr 4 16:38:46 2016 -0700

soc/intel/apollolake: Enabling using of MRC data when available

Change-Id: Iee30a6efb8dcdd04affd5d1105a254781287e9e4
    Signed-off-by: Andrey Petrov 
---
 src/soc/intel/apollolake/romstage.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/src/soc/intel/apollolake/romstage.c b/src/soc/intel/apollolake/romstage.c
index d24cdf8..291e2a8 100644
--- a/src/soc/intel/apollolake/romstage.c
+++ b/src/soc/intel/apollolake/romstage.c
@@ -23,6 +23,7 @@
 #include <device/resource.h>
 #include <string.h>
 #include <soc/iomap.h>
+#include <soc/intel/common/mrc_cache.h>
 #include <soc/pci_devs.h>
 #include <soc/northbridge.h>
 #include <soc/romstage.h>
@@ -82,6 +83,8 @@ asmlinkage void car_stage_entry(void)
    struct range_entry fsp_mem;
    struct range_entry reg_car;
    struct postcar_frame pcf;
+	const void *mrc_data;
+	size_t  mrc_data_size;

printk(BIOS_DEBUG, "Starting romstage...\n");

@@ -111,6 +114,14 @@ asmlinkage void car_stage_entry(void)
    /* Now that CBMEM is up, save the list so ramstage can use it */
    fsp_save_hob_list(hob_list_ptr);

+	/* Save MRC Data to CBMEM */
+	if (IS_ENABLED(CONFIG_CACHE_MRC_SETTINGS))
+	{
+		if ((mrc_data = fsp_find_nv_storage_data(&mrc_data_size)) &&
+		    mrc_cache_stash_data(mrc_data, mrc_data_size) < 0)
+			printk(BIOS_ERR, "Failed to stash MRC data\n");
+	}
+
    if (postcar_frame_init(&pcf, 1*KiB))
    	die("Unable to initialize postcar frame.\n");

@@ -134,6 +145,9 @@ static void fill_console_params(struct FSPM_UPD *mupd)

void platform_fsp_memory_init_params_cb(struct FSPM_UPD *mupd)
 {
+	const struct mrc_saved_data *mrc_cache;
+	struct FSP_M_ARCH_UPD *arch_upd = &mupd->FspmArchUpd;
+
    fill_console_params(mupd);
    mainboard_memory_init_params(mupd);

@@ -154,6 +168,18 @@ void platform_fsp_memory_init_params_cb(struct FSPM_UPD *mupd)
     */
    mupd->FspmArchUpd.StackBase = _car_region_end -
    				mupd->FspmArchUpd.StackSize;
+
+	arch_upd->Bootmode = FSP_BOOT_WITH_FULL_CONFIGURATION;
+
+	if (IS_ENABLED(CONFIG_CACHE_MRC_SETTINGS)) {
+		if (!mrc_cache_get_current_with_version(&mrc_cache, 0)) {
+			/* MRC cache found */
+			arch_upd->NvsBufferPtr = (void *)mrc_cache->data;
+			arch_upd->Bootmode = FSP_BOOT_ASSUMING_NO_CONFIGURATION_CHANGES;
+			printk(BIOS_DEBUG, "MRC cache found, size %x\n", mrc_cache->size);
+		} else
+			printk(BIOS_DEBUG, "MRC cache was not found\n");
+	}
 }

__attribute__ ((weak))