summaryrefslogtreecommitdiff
path: root/packages/u-boot/u-boot-mkimage-openmoko-native/dynenv-harden.patch
diff options
context:
space:
mode:
Diffstat (limited to 'packages/u-boot/u-boot-mkimage-openmoko-native/dynenv-harden.patch')
-rw-r--r--packages/u-boot/u-boot-mkimage-openmoko-native/dynenv-harden.patch139
1 files changed, 139 insertions, 0 deletions
diff --git a/packages/u-boot/u-boot-mkimage-openmoko-native/dynenv-harden.patch b/packages/u-boot/u-boot-mkimage-openmoko-native/dynenv-harden.patch
new file mode 100644
index 0000000000..cf12352553
--- /dev/null
+++ b/packages/u-boot/u-boot-mkimage-openmoko-native/dynenv-harden.patch
@@ -0,0 +1,139 @@
+common/cmd_nand.c: globalized arg_off_size
+include/util.h: new header to convenience functions, such as arg_off_size
+common/cmd_dynenv.c (do_dynenv): use arg_off_size to sanity-check offset and to
+ allow use of partition name
+common/cmd_dynenv.c (do_dynenv): indicate in no uncertain terms when an update
+ would not work due to Flash bits already cleared
+common/cmd_dynenv.c (do_dynenv): update CFG_ENV_OFFSET after successful "dynenv
+ set", so that we can write the new environment without having to reboot
+
+- Werner Almesberger <werner@openmoko.org>
+
+Index: u-boot/common/cmd_nand.c
+===================================================================
+--- u-boot.orig/common/cmd_nand.c
++++ u-boot/common/cmd_nand.c
+@@ -100,7 +100,7 @@ static inline int str2long(char *p, ulon
+ return (*p != '\0' && *endptr == '\0') ? 1 : 0;
+ }
+
+-static int
++int
+ arg_off_size(int argc, char *argv[], nand_info_t *nand, ulong *off, ulong *size)
+ {
+ int idx = nand_curr_device;
+Index: u-boot/include/util.h
+===================================================================
+--- /dev/null
++++ u-boot/include/util.h
+@@ -0,0 +1,33 @@
++/*
++ * util.h - Convenience functions
++ *
++ * (C) Copyright 2006-2007 OpenMoko, Inc.
++ * Author: Werner Almesberger <werner@openmoko.org>
++ *
++ * 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; either version 2 of
++ * the License, or (at your option) any later version.
++ *
++ * 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., 59 Temple Place, Suite 330, Boston,
++ * MA 02111-1307 USA
++ */
++
++#ifndef UTIL_H
++#define UTIL_H
++
++#include "nand.h"
++
++
++/* common/cmd_nand.c */
++int arg_off_size(int argc, char *argv[], nand_info_t *nand, ulong *off,
++ ulong *size);
++
++#endif /* UTIL_H */
+Index: u-boot/common/cmd_dynenv.c
+===================================================================
+--- u-boot.orig/common/cmd_dynenv.c
++++ u-boot/common/cmd_dynenv.c
+@@ -23,6 +23,7 @@
+ #include <malloc.h>
+ #include <environment.h>
+ #include <nand.h>
++#include <util.h>
+ #include <asm/errno.h>
+
+ #if defined(CFG_ENV_OFFSET_OOB)
+@@ -39,8 +40,8 @@ int do_dynenv(cmd_tbl_t *cmdtp, int flag
+ if (!buf)
+ return -ENOMEM;
+
++ ret = mtd->read_oob(mtd, 8, size, (size_t *) &size, (u_char *) buf);
+ if (!strcmp(cmd, "get")) {
+- ret = mtd->read_oob(mtd, 8, size, (size_t *) &size, (u_char *) buf);
+
+ if (buf[0] == 'E' && buf[1] == 'N' &&
+ buf[2] == 'V' && buf[3] == '0')
+@@ -49,7 +50,8 @@ int do_dynenv(cmd_tbl_t *cmdtp, int flag
+ printf("No dynamic environment marker in OOB block 0\n");
+
+ } else if (!strcmp(cmd, "set")) {
+- unsigned long addr;
++ unsigned long addr, dummy;
++
+ if (argc < 3)
+ goto usage;
+
+@@ -57,7 +59,23 @@ int do_dynenv(cmd_tbl_t *cmdtp, int flag
+ buf[1] = 'N';
+ buf[2] = 'V';
+ buf[3] = '0';
+- addr = simple_strtoul(argv[2], NULL, 16);
++
++ if (arg_off_size(argc-2, argv+2, mtd, &addr, &dummy) < 0) {
++ printf("Offset or partition name expected\n");
++ goto fail;
++ }
++ if (!ret) {
++ uint8_t tmp[4];
++ int i;
++
++ memcpy(&tmp, &addr, 4);
++ for (i = 0; i != 4; i++)
++ if (tmp[i] & ~buf[i+4]) {
++ printf("ERROR: erase OOB block to "
++ "write this value\n");
++ goto fail;
++ }
++ }
+ memcpy(buf+4, &addr, 4);
+
+ printf("%02x %02x %02x %02x - %02x %02x %02x %02x\n",
+@@ -65,6 +83,8 @@ int do_dynenv(cmd_tbl_t *cmdtp, int flag
+ buf[4], buf[5], buf[6], buf[7]);
+
+ ret = mtd->write_oob(mtd, 8, size, (size_t *) &size, (u_char *) buf);
++ if (!ret)
++ CFG_ENV_OFFSET = addr;
+ } else
+ goto usage;
+
+@@ -72,8 +92,9 @@ int do_dynenv(cmd_tbl_t *cmdtp, int flag
+ return ret;
+
+ usage:
+- free(buf);
+ printf("Usage:\n%s\n", cmdtp->usage);
++fail:
++ free(buf);
+ return 1;
+ }
+