diff options
Diffstat (limited to 'arch/x86/cpu/ivybridge/mrccache.c')
-rw-r--r-- | arch/x86/cpu/ivybridge/mrccache.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/arch/x86/cpu/ivybridge/mrccache.c b/arch/x86/cpu/ivybridge/mrccache.c deleted file mode 100644 index 9205494..0000000 --- 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; -} |