x86: Move mrccache.[c|h] to a common place

mrccache implementation can be common for all boards. Move it
from ivybridge cpu directory to the common lib directory.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

3 files changed, 1 insertions, 159 deletions

diff --git a/arch/x86/cpu/ivybridge/Makefile b/arch/x86/cpu/ivybridge/Makefile
index 3576b83266..0c7efaec7c 100644
--- a/arch/x86/cpu/ivybridge/Makefile
+++ b/arch/x86/cpu/ivybridge/Makefile
@@ -14,7 +14,6 @@ obj-y += lpc.o
 obj-y += me_status.o
 obj-y += model_206ax.o
 obj-y += microcode_intel.o
-obj-y += mrccache.o
 obj-y += northbridge.o
 obj-y += pch.o
 obj-y += pci.o
diff --git a/arch/x86/cpu/ivybridge/mrccache.c b/arch/x86/cpu/ivybridge/mrccache.c
deleted file mode 100644
index 92054948eb..0000000000
--- a/arch/x86/cpu/ivybridge/mrccache.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * From Coreboot src/southbridge/intel/bd82x6x/mrccache.c
- *
- * Copyright (C) 2014 Google Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0
- */
-
-#include <common.h>
-#include <errno.h>
-#include <fdtdec.h>
-#include <net.h>
-#include <spi.h>
-#include <spi_flash.h>
-#include <asm/arch/mrccache.h>
-#include <asm/arch/sandybridge.h>
-
-static struct mrc_data_container *next_mrc_block(
-	struct mrc_data_container *mrc_cache)
-{
-	/* MRC data blocks are aligned within the region */
-	u32 mrc_size = sizeof(*mrc_cache) + mrc_cache->data_size;
-	if (mrc_size & (MRC_DATA_ALIGN - 1UL)) {
-		mrc_size &= ~(MRC_DATA_ALIGN - 1UL);
-		mrc_size += MRC_DATA_ALIGN;
-	}
-
-	u8 *region_ptr = (u8 *)mrc_cache;
-	region_ptr += mrc_size;
-	return (struct mrc_data_container *)region_ptr;
-}
-
-static int is_mrc_cache(struct mrc_data_container *cache)
-{
-	return cache && (cache->signature == MRC_DATA_SIGNATURE);
-}
-
-/*
- * Find the largest index block in the MRC cache. Return NULL if none is
- * found.
- */
-struct mrc_data_container *mrccache_find_current(struct fmap_entry *entry)
-{
-	struct mrc_data_container *cache, *next;
-	ulong base_addr, end_addr;
-	uint id;
-
-	base_addr = (1ULL << 32) - CONFIG_ROM_SIZE + entry->offset;
-	end_addr = base_addr + entry->length;
-	cache = NULL;
-
-	/* Search for the last filled entry in the region */
-	for (id = 0, next = (struct mrc_data_container *)base_addr;
-	     is_mrc_cache(next);
-	     id++) {
-		cache = next;
-		next = next_mrc_block(next);
-		if ((ulong)next >= end_addr)
-			break;
-	}
-
-	if (id-- == 0) {
-		debug("%s: No valid MRC cache found.\n", __func__);
-		return NULL;
-	}
-
-	/* Verify checksum */
-	if (cache->checksum != compute_ip_checksum(cache->data,
-						   cache->data_size)) {
-		printf("%s: MRC cache checksum mismatch\n", __func__);
-		return NULL;
-	}
-
-	debug("%s: picked entry %u from cache block\n", __func__, id);
-
-	return cache;
-}
-
-/**
- * find_next_mrc_cache() - get next cache entry
- *
- * @entry:	MRC cache flash area
- * @cache:	Entry to start from
- *
- * @return next cache entry if found, NULL if we got to the end
- */
-static struct mrc_data_container *find_next_mrc_cache(struct fmap_entry *entry,
-		struct mrc_data_container *cache)
-{
-	ulong base_addr, end_addr;
-
-	base_addr = (1ULL << 32) - CONFIG_ROM_SIZE + entry->offset;
-	end_addr = base_addr + entry->length;
-
-	cache = next_mrc_block(cache);
-	if ((ulong)cache >= end_addr) {
-		/* Crossed the boundary */
-		cache = NULL;
-		debug("%s: no available entries found\n", __func__);
-	} else {
-		debug("%s: picked next entry from cache block at %p\n",
-		      __func__, cache);
-	}
-
-	return cache;
-}
-
-int mrccache_update(struct udevice *sf, struct fmap_entry *entry,
-		    struct mrc_data_container *cur)
-{
-	struct mrc_data_container *cache;
-	ulong offset;
-	ulong base_addr;
-	int ret;
-
-	/* Find the last used block */
-	base_addr = (1ULL << 32) - CONFIG_ROM_SIZE + entry->offset;
-	debug("Updating MRC cache data\n");
-	cache = mrccache_find_current(entry);
-	if (cache && (cache->data_size == cur->data_size) &&
-	    (!memcmp(cache, cur, cache->data_size + sizeof(*cur)))) {
-		debug("MRC data in flash is up to date. No update\n");
-		return -EEXIST;
-	}
-
-	/* Move to the next block, which will be the first unused block */
-	if (cache)
-		cache = find_next_mrc_cache(entry, cache);
-
-	/*
-	 * If we have got to the end, erase the entire mrc-cache area and start
-	 * again at block 0.
-	 */
-	if (!cache) {
-		debug("Erasing the MRC cache region of %x bytes at %x\n",
-		      entry->length, entry->offset);
-
-		ret = spi_flash_erase_dm(sf, entry->offset, entry->length);
-		if (ret) {
-			debug("Failed to erase flash region\n");
-			return ret;
-		}
-		cache = (struct mrc_data_container *)base_addr;
-	}
-
-	/* Write the data out */
-	offset = (ulong)cache - base_addr + entry->offset;
-	debug("Write MRC cache update to flash at %lx\n", offset);
-	ret = spi_flash_write_dm(sf, offset, cur->data_size + sizeof(*cur),
-				 cur);
-	if (ret) {
-		debug("Failed to write to SPI flash\n");
-		return ret;
-	}
-
-	return 0;
-}
diff --git a/arch/x86/cpu/ivybridge/sdram.c b/arch/x86/cpu/ivybridge/sdram.c
index 7f3b13d357..10fbe5fb36 100644
--- a/arch/x86/cpu/ivybridge/sdram.c
+++ b/arch/x86/cpu/ivybridge/sdram.c
@@ -21,10 +21,10 @@
 #include <asm/processor.h>
 #include <asm/gpio.h>
 #include <asm/global_data.h>
+#include <asm/mrccache.h>
 #include <asm/mtrr.h>
 #include <asm/pci.h>
 #include <asm/arch/me.h>
-#include <asm/arch/mrccache.h>
 #include <asm/arch/pei_data.h>
 #include <asm/arch/pch.h>
 #include <asm/post.h>