fmap: new API using region_device

Instead of being pointer based use the region infrastrucutre.
Additionally, this removes the need for arch-specific compilation
paths. The users of the new API can use the region APIs to memory
map or read the region provided by the new fmap API.

Change-Id: Ie36e9ff9cb554234ec394b921f029eeed6845aee
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9170
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
Aaron Durbin 2015-03-28 23:56:22 -05:00
parent b6981c0f9c
commit 0424c95a6d
16 changed files with 293 additions and 147 deletions

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@ -244,6 +244,15 @@ config CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM
The relocated ramstage is saved in an area specified by the
by the board and/or chipset.
config FLASHMAP_OFFSET
hex "Flash Map Offset"
default 0x00670000 if NORTHBRIDGE_INTEL_SANDYBRIDGE
default 0x00610000 if NORTHBRIDGE_INTEL_IVYBRIDGE
default CBFS_SIZE if !ARCH_X86
default 0
help
Offset of flash map in firmware image
choice
prompt "Bootblock behaviour"
default BOOTBLOCK_SIMPLE

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@ -26,6 +26,7 @@
#include <pc80/mc146818rtc.h>
#endif
#include <bcd.h>
#include <fmap.h>
#include <rtc.h>
#include <smbios.h>
#include <spi-generic.h>
@ -35,7 +36,6 @@
#include <elog.h>
#include "elog_internal.h"
#include <vendorcode/google/chromeos/fmap.h>
#if !IS_ENABLED(CONFIG_CHROMEOS) && CONFIG_ELOG_FLASH_BASE == 0
#error "CONFIG_ELOG_FLASH_BASE is invalid"
@ -85,26 +85,6 @@ static inline u32 get_rom_size(void)
return rom_size;
}
/*
* Convert a memory mapped flash address into a flash offset
*/
static inline u32 elog_flash_address_to_offset(u8 *address)
{
#if CONFIG_ARCH_X86
/* For x86, assume address is memory-mapped near 4GB */
u32 rom_size;
if (!elog_spi)
return 0;
rom_size = get_rom_size();
return (u32)address - ((u32)~0UL - rom_size + 1);
#else
return (u32)(uintptr_t)address;
#endif
}
/*
* Pointer to an event log header in the event data area
*/
@ -517,21 +497,22 @@ static void elog_find_flash(void)
{
elog_debug("elog_find_flash()\n");
#if CONFIG_CHROMEOS
/* Find the ELOG base and size in FMAP */
u8 *flash_base_ptr;
int fmap_size = find_fmap_entry("RW_ELOG", (void **)&flash_base_ptr);
if (fmap_size < 0) {
printk(BIOS_WARNING, "ELOG: Unable to find RW_ELOG in FMAP\n");
flash_base = total_size = 0;
if (IS_ENABLED(CONFIG_CHROMEOS)) {
/* Find the ELOG base and size in FMAP */
struct region r;
if (fmap_locate_area("RW_ELOG", &r) < 0) {
printk(BIOS_WARNING,
"ELOG: Unable to find RW_ELOG in FMAP\n");
flash_base = total_size = 0;
} else {
flash_base = region_offset(&r);
total_size = MIN(region_sz(&r), CONFIG_ELOG_AREA_SIZE);
}
} else {
flash_base = elog_flash_address_to_offset(flash_base_ptr);
total_size = MIN(fmap_size, CONFIG_ELOG_AREA_SIZE);
flash_base = CONFIG_ELOG_FLASH_BASE;
total_size = CONFIG_ELOG_AREA_SIZE;
}
#else
flash_base = CONFIG_ELOG_FLASH_BASE;
total_size = CONFIG_ELOG_AREA_SIZE;
#endif
log_size = total_size - sizeof(struct elog_header);
full_threshold = log_size - ELOG_MIN_AVAILABLE_ENTRIES * MAX_EVENT_SIZE;
shrink_size = MIN(total_size * ELOG_SHRINK_PERCENTAGE / 100,

35
src/include/fmap.h Normal file
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@ -0,0 +1,35 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2015 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
*/
#ifndef _FMAP_H_
#define _FMAP_H_
#include <region.h>
/* Locate the named area in the fmap and fill in a region device representing
* that area. The region is a sub-region of the readonly boot media. Return
* 0 on success, < 0 on error. */
int fmap_locate_area_as_rdev(const char *name, struct region_device *area);
/* Locate the named area in the fmap and fill in a region with the
* offset and size of that area within the boot media. Return 0 on success,
* < 0 on error. */
int fmap_locate_area(const char *name, struct region *r);
#endif

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@ -33,12 +33,12 @@
* Software Foundation.
*/
#ifndef FLASHMAP_LIB_FMAP_H__
#define FLASHMAP_LIB_FMAP_H__
#ifndef FLASHMAP_SERIALIZED_H__
#define FLASHMAP_SERIALIZED_H__
#include <stdint.h>
#define FMAP_REVERSED_SIGNATURE "__PAMF__" /* avoid magic number in .rodata */
#define FMAP_SIGNATURE "__FMAP__"
#define FMAP_VER_MAJOR 1 /* this header's FMAP minor version */
#define FMAP_VER_MINOR 1 /* this header's FMAP minor version */
#define FMAP_STRLEN 32 /* maximum length for strings, */
@ -70,10 +70,4 @@ struct fmap {
struct fmap_area areas[];
} __attribute__((packed));
/* coreboot specific function prototypes */
const struct fmap *fmap_find(void);
const struct fmap_area *find_fmap_area(const struct fmap *fmap,
const char name[]);
int find_fmap_entry(const char name[], void **pointer);
#endif /* FLASHMAP_LIB_FMAP_H__*/
#endif /* FLASHMAP_SERIALIZED_H__ */

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@ -32,12 +32,14 @@ bootblock-y += memcmp.c
bootblock-y += mem_pool.c
bootblock-y += region.c
bootblock-y += boot_device.c
bootblock-y += fmap.c
verstage-y += prog_ops.c
verstage-y += delay.c
verstage-y += cbfs.c
verstage-y += cbfs_core.c
verstage-y += halt.c
verstage-y += fmap.c
verstage-y += memcmp.c
verstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
verstage-y += region.c
@ -62,6 +64,7 @@ $(foreach arch,$(ARCH_SUPPORTED),\
$(eval rmodules_$(arch)-y += memcmp.c) \
$(eval rmodules_$(arch)-y += rmodule.ld))
romstage-y += fmap.c
romstage-$(CONFIG_I2C_TPM) += delay.c
romstage-y += cbfs.c cbfs_core.c
romstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
@ -89,6 +92,7 @@ ramstage-y += hardwaremain.c
ramstage-y += selfboot.c
ramstage-y += coreboot_table.c
ramstage-y += bootmem.c
ramstage-y += fmap.c
ramstage-y += memchr.c
ramstage-y += memcmp.c
ramstage-y += malloc.c
@ -148,6 +152,7 @@ ramstage-y += boot_device.c
smm-y += region.c
smm-y += boot_device.c
smm-y += fmap.c
smm-y += cbfs.c cbfs_core.c memcmp.c
smm-$(CONFIG_COMPILER_GCC) += gcc.c

119
src/lib/fmap.c Normal file
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@ -0,0 +1,119 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2012-2015 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
*/
#include <boot_device.h>
#include <console/console.h>
#include <fmap.h>
#include <fmap_serialized.h>
#include <stddef.h>
#include <string.h>
/*
* See http://code.google.com/p/flashmap/ for more information on FMAP.
*/
static int find_fmap_directory(struct region_device *fmrd)
{
const struct region_device *boot;
struct fmap *fmap;
size_t fmap_size;
size_t offset = CONFIG_FLASHMAP_OFFSET;
boot_device_init();
boot = boot_device_ro();
if (boot == NULL)
return -1;
fmap_size = sizeof(struct fmap);
fmap = rdev_mmap(boot, offset, fmap_size);
if (fmap == NULL)
return -1;
if (memcmp(fmap->signature, FMAP_SIGNATURE, sizeof(fmap->signature))) {
printk(BIOS_DEBUG, "No FMAP found at %zx offset.\n", offset);
rdev_munmap(boot, fmap);
return -1;
}
printk(BIOS_DEBUG, "FMAP: Found \"%s\" version %d.%d at %zx.\n",
fmap->name, fmap->ver_major, fmap->ver_minor, offset);
printk(BIOS_DEBUG, "FMAP: base = %llx size = %x #areas = %d\n",
(long long)fmap->base, fmap->size, fmap->nareas);
fmap_size += fmap->nareas * sizeof(struct fmap_area);
rdev_munmap(boot, fmap);
return rdev_chain(fmrd, boot, offset, fmap_size);
}
int fmap_locate_area_as_rdev(const char *name, struct region_device *area)
{
struct region ar;
if (fmap_locate_area(name, &ar))
return -1;
return boot_device_ro_subregion(&ar, area);
}
int fmap_locate_area(const char *name, struct region *ar)
{
struct region_device fmrd;
size_t offset;
if (find_fmap_directory(&fmrd))
return -1;
/* Start reading the areas just after fmap header. */
offset = sizeof(struct fmap);
while (1) {
struct fmap_area *area;
area = rdev_mmap(&fmrd, offset, sizeof(*area));
if (area == NULL)
return -1;
if (strcmp((const char *)area->name, name)) {
rdev_munmap(&fmrd, area);
offset += sizeof(struct fmap_area);
continue;
}
printk(BIOS_DEBUG, "FMAP: area %s found\n", name);
printk(BIOS_DEBUG, "FMAP: offset: %x\n", area->offset);
printk(BIOS_DEBUG, "FMAP: size: %d bytes\n", area->size);
ar->offset = area->offset;
ar->size = area->size;
rdev_munmap(&fmrd, area);
return 0;
}
printk(BIOS_DEBUG, "FMAP: area %s not found\n", name);
return -1;
}

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@ -20,11 +20,13 @@
#include <types.h>
#include <string.h>
#include <cbfs.h>
#include <device/device.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <console/console.h>
#include <drivers/intel/gma/int15.h>
#include <fmap.h>
#include <pc80/mc146818rtc.h>
#include <arch/acpi.h>
#include <arch/io.h>
@ -36,11 +38,6 @@
#include <smbios.h>
#include <device/pci.h>
#include <ec/quanta/ene_kb3940q/ec.h>
#if CONFIG_CHROMEOS
#include <vendorcode/google/chromeos/fmap.h>
#else
#include <cbfs.h>
#endif
static unsigned int search(char *p, char *a, unsigned int lengthp,
unsigned int lengtha)
@ -200,20 +197,30 @@ static void mainboard_init(device_t dev)
size_t search_length = -1;
u16 io_base = 0;
struct device *ethernet_dev = NULL;
#if CONFIG_CHROMEOS
char **vpd_region_ptr = NULL;
search_length = find_fmap_entry("RO_VPD", (void **)vpd_region_ptr);
search_address = (unsigned long)(*vpd_region_ptr);
#else
void *vpd_file = cbfs_get_file_content(CBFS_DEFAULT_MEDIA, "vpd.bin",
CBFS_TYPE_RAW, &search_length);
if (vpd_file) {
search_address = (unsigned long)vpd_file;
void *vpd_file;
if (IS_ENABLED(CONFIG_CHROMEOS)) {
struct region_device rdev;
if (fmap_locate_area_as_rdev("RO_VPD", &rdev) == 0) {
vpd_file = rdev_mmap_full(&rdev);
if (vpd_file != NULL) {
search_length = region_device_sz(&rdev);
search_address = (uintptr_t)vpd_file;
}
}
} else {
search_length = -1;
search_address = 0;
vpd_file = cbfs_get_file_content(CBFS_DEFAULT_MEDIA,
"vpd.bin", CBFS_TYPE_RAW,
&search_length);
if (vpd_file) {
search_address = (unsigned long)vpd_file;
} else {
search_length = -1;
search_address = 0;
}
}
#endif
/* Initialize the Embedded Controller */
butterfly_ec_init();

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@ -24,8 +24,8 @@
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <fmap.h>
#include <southbridge/intel/bd82x6x/pch.h>
#include <vendorcode/google/chromeos/fmap.h>
#include "onboard.h"
static unsigned int search(char *p, u8 *a, unsigned int lengthp,
@ -117,15 +117,24 @@ static void program_mac_address(u16 io_base)
u32 high_dword = 0xD0BA00A0; /* high dword of mac address */
u32 low_dword = 0x0000AD0B; /* low word of mac address as a dword */
#if CONFIG_CHROMEOS
search_length = find_fmap_entry("RO_VPD", &search_address);
#else
search_address = cbfs_get_file_content(CBFS_DEFAULT_MEDIA, "vpd.bin",
CBFS_TYPE_RAW, &search_length);
#endif
if (IS_ENABLED(CONFIG_CHROMEOS)) {
struct region_device rdev;
if (fmap_locate_area_as_rdev("RO_VPD", &rdev) == 0) {
search_address = rdev_mmap_full(&rdev);
if (search_address != NULL)
search_length = region_device_sz(&rdev);
}
} else {
search_address = cbfs_get_file_content(CBFS_DEFAULT_MEDIA,
"vpd.bin",
CBFS_TYPE_RAW,
&search_length);
}
if (search_length <= 0)
printk(BIOS_ERR, "LAN: find_fmap_entry returned -1.\n");
printk(BIOS_ERR, "LAN: VPD not found.\n");
else
get_mac_address(&high_dword, &low_dword, search_address,
search_length);

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@ -22,6 +22,7 @@
#include <bootstate.h>
#include <console/console.h>
#include <cbfs.h>
#include <fmap.h>
#include <ip_checksum.h>
#include <device/device.h>
#include <cbmem.h>
@ -29,9 +30,6 @@
#include "haswell.h"
#include <spi-generic.h>
#include <spi_flash.h>
#if CONFIG_CHROMEOS
#include <vendorcode/google/chromeos/fmap.h>
#endif
/* convert a pointer to flash area into the offset inside the flash */
static inline u32 to_flash_offset(struct spi_flash *flash, void *p) {
@ -66,16 +64,22 @@ static int is_mrc_cache(struct mrc_data_container *mrc_cache)
*/
static u32 get_mrc_cache_region(struct mrc_data_container **mrc_region_ptr)
{
#if CONFIG_CHROMEOS
return find_fmap_entry("RW_MRC_CACHE", (void **)mrc_region_ptr);
#else
size_t region_size;
*mrc_region_ptr = cbfs_get_file_content(CBFS_DEFAULT_MEDIA,
"mrc.cache",
CBFS_TYPE_MRC_CACHE,
&region_size);
size_t region_size = 0;
if (IS_ENABLED(CONFIG_CHROMEOS)) {
struct region_device rdev;
if (fmap_locate_area_as_rdev("RW_MRC_CACHE", &rdev) == 0) {
region_size = region_device_sz(&rdev);
*mrc_region_ptr = rdev_mmap_full(&rdev);
}
} else {
*mrc_region_ptr = cbfs_get_file_content(CBFS_DEFAULT_MEDIA,
"mrc.cache",
CBFS_TYPE_MRC_CACHE,
&region_size);
}
return region_size;
#endif
}
/*

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@ -22,6 +22,7 @@
#include <bootstate.h>
#include <console/console.h>
#include <cbfs.h>
#include <fmap.h>
#include <ip_checksum.h>
#include <device/device.h>
#include <cbmem.h>
@ -29,9 +30,6 @@
#include "sandybridge.h"
#include <spi-generic.h>
#include <spi_flash.h>
#if CONFIG_CHROMEOS
#include <vendorcode/google/chromeos/fmap.h>
#endif
/* convert a pointer to flash area into the offset inside the flash */
static inline u32 to_flash_offset(struct spi_flash *flash, void *p) {
@ -66,17 +64,22 @@ static int is_mrc_cache(struct mrc_data_container *mrc_cache)
*/
static u32 get_mrc_cache_region(struct mrc_data_container **mrc_region_ptr)
{
#if CONFIG_CHROMEOS
return find_fmap_entry("RW_MRC_CACHE", (void **)mrc_region_ptr);
#else
size_t region_size;
*mrc_region_ptr = cbfs_get_file_content(CBFS_DEFAULT_MEDIA,
"mrc.cache",
CBFS_TYPE_MRC_CACHE,
&region_size);
return region_size;
#endif
size_t region_size = 0;
if (IS_ENABLED(CONFIG_CHROMEOS)) {
struct region_device rdev;
if (fmap_locate_area_as_rdev("RW_MRC_CACHE", &rdev) == 0) {
region_size = region_device_sz(&rdev);
*mrc_region_ptr = rdev_mmap_full(&rdev);
}
} else {
*mrc_region_ptr = cbfs_get_file_content(CBFS_DEFAULT_MEDIA,
"mrc.cache",
CBFS_TYPE_MRC_CACHE,
&region_size);
}
return region_size;
}
/*

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@ -20,10 +20,8 @@
#include <string.h>
#include <console/console.h>
#include <cbmem.h>
#include <fmap.h>
#include <ip_checksum.h>
#if CONFIG_CHROMEOS
#include <vendorcode/google/chromeos/fmap.h>
#endif
#include "mrc_cache.h"
#define MRC_DATA_ALIGN 0x1000
@ -39,16 +37,23 @@ struct mrc_data_region {
/* common code */
static int mrc_cache_get_region(struct mrc_data_region *region)
{
#if CONFIG_CHROMEOS
int ret;
ret = find_fmap_entry("RW_MRC_CACHE", &region->base);
if (ret >= 0) {
region->size = ret;
if (IS_ENABLED(CONFIG_CHROMEOS)) {
struct region_device rdev;
if (fmap_locate_area_as_rdev("RW_MRC_CACHE", &rdev))
return -1;
region->size = region_device_sz(&rdev);
region->base = rdev_mmap_full(&rdev);
if (region->base == NULL)
return -1;
return 0;
} else {
region->base = (void *)CONFIG_MRC_SETTINGS_CACHE_BASE;
region->size = CONFIG_MRC_SETTINGS_CACHE_SIZE;
}
#endif
region->base = (void *)CONFIG_MRC_SETTINGS_CACHE_BASE;
region->size = CONFIG_MRC_SETTINGS_CACHE_SIZE;
return 0;
}

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@ -92,15 +92,6 @@ config CHROMEOS_RAMOOPS_RAM_SIZE
default 0x00100000
depends on CHROMEOS_RAMOOPS
config FLASHMAP_OFFSET
hex "Flash Map Offset"
default 0x00670000 if NORTHBRIDGE_INTEL_SANDYBRIDGE
default 0x00610000 if NORTHBRIDGE_INTEL_IVYBRIDGE
default CBFS_SIZE if !ARCH_X86
default 0
help
Offset of flash map in firmware image
config EC_SOFTWARE_SYNC
bool "Enable EC software sync"
default n

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@ -35,11 +35,7 @@ ramstage-$(CONFIG_CHROMEOS_VBNV_FLASH) += vbnv_flash.c
romstage-$(CONFIG_ARCH_ROMSTAGE_X86_32) += vboot.c
ramstage-$(CONFIG_ELOG) += elog.c
ramstage-$(CONFIG_HAVE_ACPI_TABLES) += gnvs.c
verstage-y += fmap.c
romstage-y += fmap.c
ramstage-y += fmap.c
ramstage-$(CONFIG_CHROMEOS_RAMOOPS) += ramoops.c
smm-y += fmap.c
romstage-y += vpd_decode.c cros_vpd.c
ramstage-y += vpd_decode.c cros_vpd.c vpd_mac.c vpd_serialno.c vpd_calibration.c
ifeq ($(CONFIG_ARCH_X86)$(CONFIG_ARCH_MIPS),)

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@ -6,12 +6,11 @@
#include <console/console.h>
#include <cbfs.h>
#include <fmap.h>
#include <stdlib.h>
#include <string.h>
#include "cros_vpd.h"
#include "fmap.h"
#include "lib_vpd.h"
#include "vpd_tables.h"
@ -35,9 +34,7 @@ static int cros_vpd_load(uint8_t **vpd_address, int32_t *vpd_size)
MAYBE_STATIC int result = -1;
struct google_vpd_info info;
int32_t base;
const struct fmap_area *area;
struct cbfs_media media;
struct region_device vpd;
if (cached) {
*vpd_address = cached_address;
@ -46,32 +43,31 @@ static int cros_vpd_load(uint8_t **vpd_address, int32_t *vpd_size)
}
cached = 1;
area = find_fmap_area(fmap_find(), "RO_VPD");
if (!area) {
if (fmap_locate_area_as_rdev("RO_VPD", &vpd)) {
printk(BIOS_ERR, "%s: No RO_VPD FMAP section.\n", __func__);
return result;
}
if (area->size <= GOOGLE_VPD_2_0_OFFSET + sizeof(info)) {
base = 0;
cached_size = region_device_sz(&vpd);
if ((cached_size < GOOGLE_VPD_2_0_OFFSET + sizeof(info)) ||
rdev_chain(&vpd, &vpd, GOOGLE_VPD_2_0_OFFSET,
cached_size - GOOGLE_VPD_2_0_OFFSET)) {
printk(BIOS_ERR, "%s: Too small (%d) for Google VPD 2.0.\n",
__func__, area->size);
__func__, cached_size);
return result;
}
base = area->offset + GOOGLE_VPD_2_0_OFFSET;
cached_size = area->size - GOOGLE_VPD_2_0_OFFSET;
init_default_cbfs_media(&media);
media.open(&media);
/* Try if we can find a google_vpd_info, otherwise read whole VPD. */
if (media.read(&media, &info, base, sizeof(info)) == sizeof(info) &&
if (rdev_readat(&vpd, &info, base, sizeof(info)) == sizeof(info) &&
memcmp(info.header.magic, VPD_INFO_MAGIC, sizeof(info.header.magic))
== 0 && cached_size >= info.size + sizeof(info)) {
base += sizeof(info);
cached_size = info.size;
}
cached_address = media.map(&media, base, cached_size);
media.close(&media);
cached_address = rdev_mmap(&vpd, base, cached_size);
if (cached_address) {
*vpd_address = cached_address;
*vpd_size = cached_size;

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@ -26,13 +26,13 @@
#include <cbmem.h>
#include <console/console.h>
#include <console/vtxprintf.h>
#include <fmap.h>
#include <stdlib.h>
#include <timestamp.h>
#define NEED_VB20_INTERNALS /* TODO: remove me! */
#include <vb2_api.h>
#include <vboot_struct.h>
#include "../chromeos.h"
#include "../fmap.h"
#include "../vboot_handoff.h"
#include "misc.h"

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@ -22,27 +22,19 @@
#include <cbmem.h>
#include <console/cbmem_console.h>
#include <console/console.h>
#include <fmap.h>
#include <reset.h>
#include <stddef.h>
#include <string.h>
#include "chromeos.h"
#include "fmap.h"
#include "vboot_common.h"
#include "vboot_handoff.h"
void vboot_locate_region(const char *name, struct region *region)
{
const struct fmap_area *area;
region->size = 0;
area = find_fmap_area(fmap_find(), name);
if (area != NULL) {
region->offset = area->offset;
region->size = area->size;
}
if (fmap_locate_area(name, region))
region->size = 0;
}
void *vboot_get_region(size_t offset, size_t size, void *dest)