mtd: base-files: Unify dual-firmware devices (Linksys)
Consistently handle boot-count reset and upgrade across ipq40xx, ipq806x, kirkwood, mvebu Dual-firmware devices often utilize a specific MTD partition to record the number of times the boot loader has initiated boot. Most of these devices are NAND, typically with a 2k erase size. When this code was ported to the ipq40xx platform, the device in hand used NOR for this partition, with a 16-byte "record" size. As the implementation of `mtd resetbc` is by-platform, the hard-coded nature of this change prevented proper operation of a NAND-based device. * Unified the "NOR" variant with the rest of the Linksys variants * Added logging to indicate success and failure * Provided a meaningful return value for scripting * "Protected" the use of `mtd resetbc` in start-up scripts so that failure does not end the boot sequence * Moved Linksys-specific actions into common `/etc/init.d/bootcount` For upgrade, these devices need to determine which partition to flash, as well as set certain U-Boot envirnment variables to change the next boot to the newly flashed version. * Moved upgrade-related environment changes out of bootcount * Combined multiple flashes of environment into single one * Current-partition detection now handles absence of `boot_part` Runtime-tested: Linksys EA8300 Signed-off-by: Jeff Kletsky <git-commits@allycomm.com> Signed-off-by: Christian Lamparter <chunkeey@gmail.com> [checkpatch.pl fixes, traded split strings for 80+ chars per line]v19.07.3_mercusys_ac12_duma
Jeff Kletsky
5 years ago
committed by
Christian Lamparter
parent
4bdc873a5f
commit
b3770eaca3
@ -1,115 +0,0 @@
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/*
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* Linksys boot counter reset code for mtd
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*
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* Copyright (C) 2013 Jonas Gorski <jogo@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License v2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <endian.h>
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#include <string.h>
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#include <errno.h>
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#include <stdint.h>
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#include <sys/ioctl.h>
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#include <mtd/mtd-user.h>
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#include "mtd.h"
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#define BOOTCOUNT_MAGIC 0x20110811
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struct bootcounter {
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uint32_t magic;
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uint32_t count;
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uint32_t checksum;
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};
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static char page[2048];
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int mtd_resetbc(const char *mtd)
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{
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struct mtd_info_user mtd_info;
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struct bootcounter *curr = (struct bootcounter *)page;
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unsigned int i;
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int last_count = 0;
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int num_bc;
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int fd;
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int ret;
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fd = mtd_check_open(mtd);
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if (ioctl(fd, MEMGETINFO, &mtd_info) < 0) {
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fprintf(stderr, "failed to get mtd info!\n");
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return -1;
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}
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num_bc = mtd_info.size / 16;
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for (i = 0; i < num_bc; i++) {
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pread(fd, curr, sizeof(*curr), i * 16);
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if (curr->magic != (BOOTCOUNT_MAGIC) && curr->magic != 0xffffffff) {
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fprintf(stderr, "unexpected magic %08x, bailing out\n", curr->magic);
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goto out;
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}
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if (curr->magic == 0xffffffff)
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break;
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last_count = curr->count;
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}
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/* no need to do writes when last boot count is already 0 */
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if (last_count == 0)
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goto out;
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if (i == num_bc) {
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struct erase_info_user erase_info;
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erase_info.start = 0;
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erase_info.length = mtd_info.size;
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/* erase block */
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ret = ioctl(fd, MEMERASE, &erase_info);
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if (ret < 0) {
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fprintf(stderr, "failed to erase block: %i\n", ret);
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return -1;
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}
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i = 0;
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}
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memset(curr, 0xff, 16);
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curr->magic = BOOTCOUNT_MAGIC;
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curr->count = 0;
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curr->checksum = BOOTCOUNT_MAGIC;
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ret = pwrite(fd, curr, 16, i * 16);
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if (ret < 0)
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fprintf(stderr, "failed to write: %i\n", ret);
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sync();
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out:
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close(fd);
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return 0;
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}
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@ -1,34 +0,0 @@
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#!/bin/sh /etc/rc.common
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#
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# This script sets auto_recovery to "yes" and resets the boot counter to 0.
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# As a golden rule, this should be the latest script to run at boot. For a
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# developer snapshot, it is fine to set auto_recovery here. But for a stable
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# release, this script must in fact turn off auto_recovery.
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#
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# Why? Because the custom sysupgrade script for the device will turn on
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# auto_recovery to "yes". And it's the job of this script to set the
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# boot boot_count to 0 and then disable auto_recovery, as that condition
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# means that the stable release went well.
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#
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# I have to repeat: this script should be changed for stable releases.
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START=99
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boot() {
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. /lib/functions.sh
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case $(board_name) in
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linksys,ea6350v3)
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# make sure auto_recovery in uboot is always on
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IS_AUTO_RECOVERY="$(fw_printenv -n auto_recovery)"
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if [ "$IS_AUTO_RECOVERY" != "yes" ] ; then
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fw_setenv auto_recovery yes
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echo "Linksys EA6350v3: fw_setenv: auto_recovery has been set to yes"
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fi
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# reset the boot counter
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fw_setenv boot_count 0
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mtd resetbc s_env
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echo "Linksys EA6350v3: boot counter has been reset"
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echo "Linksys EA6350v3: boot_part=$(fw_printenv -n boot_part)"
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;;
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esac
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}
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@ -0,0 +1,13 @@
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#!/bin/sh /etc/rc.common
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START=99
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start() {
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. /lib/functions.sh
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case $(board_name) in
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linksys,ea8500)
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mtd resetbc s_env || true
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;;
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esac
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}
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@ -1,19 +0,0 @@
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#!/bin/sh /etc/rc.common
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# Copyright (C) 2015 OpenWrt.org
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START=97
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boot() {
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. /lib/functions.sh
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case $(board_name) in
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linksys,ea8500)
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# make sure auto_recovery in uboot is always on
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AUTO_RECOVERY_ENA="`fw_printenv -n auto_recovery`"
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if [ "$AUTO_RECOVERY_ENA" != "yes" ] ; then
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fw_setenv auto_recovery yes
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fi
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# reset the boot counter
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mtd resetbc s_env
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;;
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esac
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}
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@ -0,0 +1,14 @@
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#!/bin/sh /etc/rc.common
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START=99
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start() {
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. /lib/functions.sh
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case $(board_name) in
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linksys,audi|\
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linksys,viper)
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mtd resetbc s_env || true
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;;
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esac
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}
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@ -1,19 +0,0 @@
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#!/bin/sh /etc/rc.common
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# Copyright (C) 2015 OpenWrt.org
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START=97
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boot() {
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. /lib/functions.sh
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case $(board_name) in
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linksys,audi|linksys,viper)
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# make sure auto_recovery in uboot is always on
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AUTO_RECOVERY_ENA="`fw_printenv -n auto_recovery`"
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if [ "$AUTO_RECOVERY_ENA" != "yes" ] ; then
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fw_setenv auto_recovery yes
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fi
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# reset the boot counter
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mtd resetbc s_env
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;;
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esac
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}
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@ -0,0 +1,18 @@
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#!/bin/sh /etc/rc.common
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START=99
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start() {
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. /lib/functions.sh
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case $(board_name) in
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linksys,caiman |\
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linksys,cobra |\
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linksys,mamba |\
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linksys,rango |\
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linksys,shelby |\
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linksys,venom)
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mtd resetbc s_env || true
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;;
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esac
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}
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@ -1,20 +0,0 @@
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#!/bin/sh /etc/rc.common
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# Copyright (C) 2015-2016 OpenWrt.org
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# Copyright (C) 2016 LEDE-Project.org
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START=97
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boot() {
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. /lib/functions.sh
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case $(board_name) in
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linksys,caiman|linksys,cobra|linksys,mamba|linksys,rango|linksys,shelby|linksys,venom)
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# make sure auto_recovery in uboot is always on
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AUTO_RECOVERY_ENA="`fw_printenv -n auto_recovery`"
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if [ "$AUTO_RECOVERY_ENA" != "yes" ] ; then
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fw_setenv auto_recovery yes
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fi
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# reset the boot counter
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mtd resetbc s_env
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;;
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esac
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}
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