mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-02 01:19:49 +00:00
f31dac4e6e
Add support for bootcounter on an EXT filesystem. Sync configuration whitelist. Signed-off-by: Ian Ray <ian.ray@ge.com> Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk>
62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
/*
|
|
* Copyright (c) 2017 General Electric Company. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <bootcount.h>
|
|
#include <fs.h>
|
|
#include <mapmem.h>
|
|
|
|
#define BC_MAGIC 0xbc
|
|
|
|
void bootcount_store(ulong a)
|
|
{
|
|
u8 *buf;
|
|
loff_t len;
|
|
int ret;
|
|
|
|
if (fs_set_blk_dev(CONFIG_SYS_BOOTCOUNT_EXT_INTERFACE,
|
|
CONFIG_SYS_BOOTCOUNT_EXT_DEVPART, FS_TYPE_EXT)) {
|
|
puts("Error selecting device\n");
|
|
return;
|
|
}
|
|
|
|
buf = map_sysmem(CONFIG_SYS_BOOTCOUNT_ADDR, 2);
|
|
buf[0] = BC_MAGIC;
|
|
buf[1] = (a & 0xff);
|
|
unmap_sysmem(buf);
|
|
|
|
ret = fs_write(CONFIG_SYS_BOOTCOUNT_EXT_NAME,
|
|
CONFIG_SYS_BOOTCOUNT_ADDR, 0, 2, &len);
|
|
if (ret != 0)
|
|
puts("Error storing bootcount\n");
|
|
}
|
|
|
|
ulong bootcount_load(void)
|
|
{
|
|
u8 *buf;
|
|
loff_t len_read;
|
|
int ret;
|
|
|
|
if (fs_set_blk_dev(CONFIG_SYS_BOOTCOUNT_EXT_INTERFACE,
|
|
CONFIG_SYS_BOOTCOUNT_EXT_DEVPART, FS_TYPE_EXT)) {
|
|
puts("Error selecting device\n");
|
|
return 0;
|
|
}
|
|
|
|
ret = fs_read(CONFIG_SYS_BOOTCOUNT_EXT_NAME, CONFIG_SYS_BOOTCOUNT_ADDR,
|
|
0, 2, &len_read);
|
|
if (ret != 0 || len_read != 2) {
|
|
puts("Error loading bootcount\n");
|
|
return 0;
|
|
}
|
|
|
|
buf = map_sysmem(CONFIG_SYS_BOOTCOUNT_ADDR, 2);
|
|
if (buf[0] == BC_MAGIC)
|
|
ret = buf[1];
|
|
|
|
unmap_sysmem(buf);
|
|
|
|
return ret;
|
|
}
|