mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-10 15:14:43 +00:00
Automatic software update from TFTP server
The auto-update feature allows to automatically download software updates from a TFTP server and store them in Flash memory during boot. Updates are contained in a FIT file and protected with SHA-1 checksum. More detailed description can be found in doc/README.update. Signed-off-by: Rafal Czubak <rcz@semihalf.com> Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>
This commit is contained in:
parent
3f0cf51dab
commit
4bae90904b
7 changed files with 487 additions and 0 deletions
12
README
12
README
|
@ -1740,6 +1740,14 @@ The following options need to be configured:
|
|||
example, some LED's) on your board. At the moment,
|
||||
the following checkpoints are implemented:
|
||||
|
||||
- Automatic software updates via TFTP server
|
||||
CONFIG_UPDATE_TFTP
|
||||
CONFIG_UPDATE_TFTP_CNT_MAX
|
||||
CONFIG_UPDATE_TFTP_MSEC_MAX
|
||||
|
||||
These options enable and control the auto-update feature;
|
||||
for a more detailed description refer to doc/README.update.
|
||||
|
||||
Legacy uImage format:
|
||||
|
||||
Arg Where When
|
||||
|
@ -2814,6 +2822,10 @@ Some configuration options can be set using Environment Variables:
|
|||
allowed for use by the bootm command. See also "bootm_low"
|
||||
environment variable.
|
||||
|
||||
updatefile - Location of the software update file on a TFTP server, used
|
||||
by the automatic software update feature. Please refer to
|
||||
documentation in doc/README.update for more details.
|
||||
|
||||
autoload - if set to "no" (any string beginning with 'n'),
|
||||
"bootp" will just load perform a lookup of the
|
||||
configuration from the BOOTP server, but not try to
|
||||
|
|
|
@ -153,6 +153,7 @@ COBJS-y += flash.o
|
|||
COBJS-y += kgdb.o
|
||||
COBJS-$(CONFIG_LCD) += lcd.o
|
||||
COBJS-$(CONFIG_LYNXKDI) += lynxkdi.o
|
||||
COBJS-$(CONFIG_UPDATE_TFTP) += update.o
|
||||
COBJS-$(CONFIG_USB_KEYBOARD) += usb_kbd.o
|
||||
COBJS-$(CONFIG_DDR_SPD) += ddr_spd.o
|
||||
|
||||
|
|
|
@ -56,6 +56,9 @@ extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); /* fo
|
|||
|
||||
extern int do_bootd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
|
||||
|
||||
#if defined(CONFIG_UPDATE_TFTP)
|
||||
void update_tftp (void);
|
||||
#endif /* CONFIG_UPDATE_TFTP */
|
||||
|
||||
#define MAX_DELAY_STOP_STR 32
|
||||
|
||||
|
@ -301,6 +304,10 @@ void main_loop (void)
|
|||
trab_vfd (bmp);
|
||||
#endif /* CONFIG_VFD && VFD_TEST_LOGO */
|
||||
|
||||
#if defined(CONFIG_UPDATE_TFTP)
|
||||
update_tftp ();
|
||||
#endif /* CONFIG_UPDATE_TFTP */
|
||||
|
||||
#ifdef CONFIG_BOOTCOUNT_LIMIT
|
||||
bootcount = bootcount_load();
|
||||
bootcount++;
|
||||
|
|
315
common/update.c
Normal file
315
common/update.c
Normal file
|
@ -0,0 +1,315 @@
|
|||
/*
|
||||
* (C) Copyright 2008 Semihalf
|
||||
*
|
||||
* Written by: Rafal Czubak <rcz@semihalf.com>
|
||||
* Bartlomiej Sieka <tur@semihalf.com>
|
||||
*
|
||||
* See file CREDITS for list of people who contributed to this
|
||||
* project.
|
||||
*
|
||||
* 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
|
||||
*
|
||||
*/
|
||||
|
||||
#include <common.h>
|
||||
|
||||
#if !(defined(CONFIG_FIT) && defined(CONFIG_OF_LIBFDT))
|
||||
#error "CONFIG_FIT and CONFIG_OF_LIBFDT are required for auto-update feature"
|
||||
#endif
|
||||
|
||||
#if defined(CFG_NO_FLASH)
|
||||
#error "CFG_NO_FLASH defined, but FLASH is required for auto-update feature"
|
||||
#endif
|
||||
|
||||
#include <command.h>
|
||||
#include <flash.h>
|
||||
#include <net.h>
|
||||
#include <malloc.h>
|
||||
|
||||
/* env variable holding the location of the update file */
|
||||
#define UPDATE_FILE_ENV "updatefile"
|
||||
|
||||
/* set configuration defaults if needed */
|
||||
#ifndef CONFIG_UPDATE_LOAD_ADDR
|
||||
#define CONFIG_UPDATE_LOAD_ADDR 0x100000
|
||||
#endif
|
||||
|
||||
#ifndef CONFIG_UPDATE_TFTP_MSEC_MAX
|
||||
#define CONFIG_UPDATE_TFTP_MSEC_MAX 100
|
||||
#endif
|
||||
|
||||
#ifndef CONFIG_UPDATE_TFTP_CNT_MAX
|
||||
#define CONFIG_UPDATE_TFTP_CNT_MAX 0
|
||||
#endif
|
||||
|
||||
extern ulong TftpRRQTimeoutMSecs;
|
||||
extern int TftpRRQTimeoutCountMax;
|
||||
extern flash_info_t flash_info[];
|
||||
extern ulong load_addr;
|
||||
|
||||
static uchar *saved_prot_info;
|
||||
|
||||
static int update_load(char *filename, ulong msec_max, int cnt_max, ulong addr)
|
||||
{
|
||||
int size, rv;
|
||||
ulong saved_timeout_msecs;
|
||||
int saved_timeout_count;
|
||||
char *saved_netretry, *saved_bootfile;
|
||||
|
||||
rv = 0;
|
||||
/* save used globals and env variable */
|
||||
saved_timeout_msecs = TftpRRQTimeoutMSecs;
|
||||
saved_timeout_count = TftpRRQTimeoutCountMax;
|
||||
saved_netretry = strdup(getenv("netretry"));
|
||||
saved_bootfile = strdup(BootFile);
|
||||
|
||||
/* set timeouts for auto-update */
|
||||
TftpRRQTimeoutMSecs = msec_max;
|
||||
TftpRRQTimeoutCountMax = cnt_max;
|
||||
|
||||
/* we don't want to retry the connection if errors occur */
|
||||
setenv("netretry", "no");
|
||||
|
||||
/* download the update file */
|
||||
load_addr = addr;
|
||||
copy_filename(BootFile, filename, sizeof(BootFile));
|
||||
size = NetLoop(TFTP);
|
||||
|
||||
if (size < 0)
|
||||
rv = 1;
|
||||
else if (size > 0)
|
||||
flush_cache(addr, size);
|
||||
|
||||
/* restore changed globals and env variable */
|
||||
TftpRRQTimeoutMSecs = saved_timeout_msecs;
|
||||
TftpRRQTimeoutCountMax = saved_timeout_count;
|
||||
|
||||
setenv("netretry", saved_netretry);
|
||||
if (saved_netretry != NULL)
|
||||
free(saved_netretry);
|
||||
|
||||
if (saved_bootfile != NULL) {
|
||||
copy_filename(BootFile, saved_bootfile, sizeof(BootFile));
|
||||
free(saved_bootfile);
|
||||
}
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
static int update_flash_protect(int prot, ulong addr_first, ulong addr_last)
|
||||
{
|
||||
uchar *sp_info_ptr;
|
||||
ulong s;
|
||||
int i, bank, cnt;
|
||||
flash_info_t *info;
|
||||
|
||||
sp_info_ptr = NULL;
|
||||
|
||||
if (prot == 0) {
|
||||
saved_prot_info =
|
||||
calloc(CFG_MAX_FLASH_BANKS * CFG_MAX_FLASH_SECT, 1);
|
||||
if (!saved_prot_info)
|
||||
return 1;
|
||||
}
|
||||
|
||||
for (bank = 0; bank < CFG_MAX_FLASH_BANKS; ++bank) {
|
||||
cnt = 0;
|
||||
info = &flash_info[bank];
|
||||
|
||||
/* Nothing to do if the bank doesn't exist */
|
||||
if (info->sector_count == 0)
|
||||
return 0;
|
||||
|
||||
/* Point to current bank protection information */
|
||||
sp_info_ptr = saved_prot_info + (bank * CFG_MAX_FLASH_SECT);
|
||||
|
||||
/*
|
||||
* Adjust addr_first or addr_last if we are on bank boundary.
|
||||
* Address space between banks must be continuous for other
|
||||
* flash functions (like flash_sect_erase or flash_write) to
|
||||
* succeed. Banks must also be numbered in correct order,
|
||||
* according to increasing addresses.
|
||||
*/
|
||||
if (addr_last > info->start[0] + info->size - 1)
|
||||
addr_last = info->start[0] + info->size - 1;
|
||||
if (addr_first < info->start[0])
|
||||
addr_first = info->start[0];
|
||||
|
||||
for (i = 0; i < info->sector_count; i++) {
|
||||
/* Save current information about protected sectors */
|
||||
if (prot == 0) {
|
||||
s = info->start[i];
|
||||
if ((s >= addr_first) && (s <= addr_last))
|
||||
sp_info_ptr[i] = info->protect[i];
|
||||
|
||||
}
|
||||
|
||||
/* Protect/unprotect sectors */
|
||||
if (sp_info_ptr[i] == 1) {
|
||||
#if defined(CFG_FLASH_PROTECTION)
|
||||
if (flash_real_protect(info, i, prot))
|
||||
return 1;
|
||||
#else
|
||||
info->protect[i] = prot;
|
||||
#endif
|
||||
cnt++;
|
||||
}
|
||||
}
|
||||
|
||||
if (cnt) {
|
||||
printf("%sProtected %d sectors\n",
|
||||
prot ? "": "Un-", cnt);
|
||||
}
|
||||
}
|
||||
|
||||
if((prot == 1) && saved_prot_info)
|
||||
free(saved_prot_info);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int update_flash(ulong addr_source, ulong addr_first, ulong size)
|
||||
{
|
||||
ulong addr_last = addr_first + size - 1;
|
||||
|
||||
/* round last address to the sector boundary */
|
||||
if (flash_sect_roundb(&addr_last) > 0)
|
||||
return 1;
|
||||
|
||||
if (addr_first >= addr_last) {
|
||||
printf("Error: end address exceeds addressing space\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* remove protection on processed sectors */
|
||||
if (update_flash_protect(0, addr_first, addr_last) > 0) {
|
||||
printf("Error: could not unprotect flash sectors\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
printf("Erasing 0x%08lx - 0x%08lx", addr_first, addr_last);
|
||||
if (flash_sect_erase(addr_first, addr_last) > 0) {
|
||||
printf("Error: could not erase flash\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
printf("Copying to flash...");
|
||||
if (flash_write((char *)addr_source, addr_first, size) > 0) {
|
||||
printf("Error: could not copy to flash\n");
|
||||
return 1;
|
||||
}
|
||||
printf("done\n");
|
||||
|
||||
/* enable protection on processed sectors */
|
||||
if (update_flash_protect(1, addr_first, addr_last) > 0) {
|
||||
printf("Error: could not protect flash sectors\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int update_fit_getparams(const void *fit, int noffset, ulong *addr,
|
||||
ulong *fladdr, ulong *size)
|
||||
{
|
||||
const void *data;
|
||||
|
||||
if (fit_image_get_data(fit, noffset, &data, (size_t *)size))
|
||||
return 1;
|
||||
|
||||
if (fit_image_get_load(fit, noffset, (ulong *)fladdr))
|
||||
return 1;
|
||||
|
||||
*addr = (ulong)data;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void update_tftp(void)
|
||||
{
|
||||
char *filename, *env_addr;
|
||||
int images_noffset, ndepth, noffset;
|
||||
ulong update_addr, update_fladdr, update_size;
|
||||
ulong addr;
|
||||
void *fit;
|
||||
|
||||
printf("Auto-update from TFTP: ");
|
||||
|
||||
/* get the file name of the update file */
|
||||
filename = getenv(UPDATE_FILE_ENV);
|
||||
if (filename == NULL) {
|
||||
printf("failed, env. variable '%s' not found\n",
|
||||
UPDATE_FILE_ENV);
|
||||
return;
|
||||
}
|
||||
|
||||
printf("trying update file '%s'\n", filename);
|
||||
|
||||
/* get load address of downloaded update file */
|
||||
if ((env_addr = getenv("loadaddr")) != NULL)
|
||||
addr = simple_strtoul(env_addr, NULL, 16);
|
||||
else
|
||||
addr = CONFIG_UPDATE_LOAD_ADDR;
|
||||
|
||||
|
||||
if (update_load(filename, CONFIG_UPDATE_TFTP_MSEC_MAX,
|
||||
CONFIG_UPDATE_TFTP_CNT_MAX, addr)) {
|
||||
printf("Can't load update file, aborting auto-update\n");
|
||||
return;
|
||||
}
|
||||
|
||||
fit = (void *)addr;
|
||||
|
||||
if (!fit_check_format((void *)fit)) {
|
||||
printf("Bad FIT format of the update file, aborting "
|
||||
"auto-update\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* process updates */
|
||||
images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
|
||||
|
||||
ndepth = 0;
|
||||
noffset = fdt_next_node(fit, images_noffset, &ndepth);
|
||||
while (noffset >= 0 && ndepth > 0) {
|
||||
if (ndepth != 1)
|
||||
goto next_node;
|
||||
|
||||
printf("Processing update '%s' :",
|
||||
fit_get_name(fit, noffset, NULL));
|
||||
|
||||
if (!fit_image_check_hashes(fit, noffset)) {
|
||||
printf("Error: invalid update hash, aborting\n");
|
||||
goto next_node;
|
||||
}
|
||||
|
||||
printf("\n");
|
||||
if (update_fit_getparams(fit, noffset, &update_addr,
|
||||
&update_fladdr, &update_size)) {
|
||||
printf("Error: can't get update parameteres, "
|
||||
"aborting\n");
|
||||
goto next_node;
|
||||
}
|
||||
if (update_flash(update_addr, update_fladdr, update_size)) {
|
||||
printf("Error: can't flash update, aborting\n");
|
||||
goto next_node;
|
||||
}
|
||||
next_node:
|
||||
noffset = fdt_next_node(fit, noffset, &ndepth);
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
90
doc/README.update
Normal file
90
doc/README.update
Normal file
|
@ -0,0 +1,90 @@
|
|||
Automatic software update from a TFTP server
|
||||
============================================
|
||||
|
||||
Overview
|
||||
--------
|
||||
|
||||
This feature allows to automatically store software updates present on a TFTP
|
||||
server in NOR Flash. In more detail: a TFTP transfer of a file given in
|
||||
environment variable 'updatefile' from server 'serverip' is attempted during
|
||||
boot. The update file should be a FIT file, and can contain one or more
|
||||
updates. Each update in the update file has an address in NOR Flash where it
|
||||
should be placed, updates are also protected with a SHA-1 checksum. If the
|
||||
TFTP transfer is successful, the hash of each update is verified, and if the
|
||||
verification is positive, the update is stored in Flash.
|
||||
|
||||
The auto-update feature is enabled by the CONFIG_UPDATE_TFTP macro:
|
||||
|
||||
#define CONFIG_UPDATE_TFTP 1
|
||||
|
||||
|
||||
Note that when enabling auto-update, Flash support must be turned on. Also,
|
||||
one must enable FIT and LIBFDT support:
|
||||
|
||||
#define CONFIG_FIT 1
|
||||
#define CONFIG_OF_LIBFDT 1
|
||||
|
||||
The auto-update feature uses the following configuration knobs:
|
||||
|
||||
- CONFIG_UPDATE_LOAD_ADDR
|
||||
|
||||
Normally, TFTP transfer of the update file is done to the address specified
|
||||
in environment variable 'loadaddr'. If this variable is not present, the
|
||||
transfer is made to the address given in CONFIG_UPDATE_LOAD_ADDR (0x100000
|
||||
by default).
|
||||
|
||||
- CONFIG_UPDATE_TFTP_CNT_MAX
|
||||
CONFIG_UPDATE_TFTP_MSEC_MAX
|
||||
|
||||
These knobs control the timeouts during initial connection to the TFTP
|
||||
server. Since a transfer is attempted during each boot, it is undesirable to
|
||||
have a long delay when a TFTP server is not present.
|
||||
CONFIG_UPDATE_TFTP_MSEC_MAX specifies the number of seconds to wait for the
|
||||
server to respond to initial connection, and CONFIG_UPDATE_TFTP_CNT_MAX
|
||||
gives the number of such connection retries. CONFIG_UPDATE_TFTP_CNT_MAX must
|
||||
be non-negative and is 0 by default, CONFIG_UPDATE_TFTP_MSEC_MAX must be
|
||||
positive and is 1 by default.
|
||||
|
||||
Since the update file is in FIT format, it is created from an *.its file using
|
||||
the mkimage tool. dtc tool with support for binary includes, e.g. in version
|
||||
1.2.0 or later, must also be available on the system where the update file is
|
||||
to be prepared. Refer to the doc/uImage.FIT/ directory for more details on FIT
|
||||
images.
|
||||
|
||||
|
||||
Example .its files
|
||||
------------------
|
||||
|
||||
- doc/uImage.FIT/update_uboot.its
|
||||
|
||||
A simple example that can be used to create an update file for automatically
|
||||
replacing U-Boot image on a system.
|
||||
|
||||
Assuming that an U-Boot image u-boot.bin is present in the current working
|
||||
directory, and that the address given in the 'load' property in the
|
||||
'update_uboot.its' file is where the U-Boot is stored in Flash, the
|
||||
following command will create the actual update file 'update_uboot.itb':
|
||||
|
||||
mkimage -f update_uboot.its update_uboot.itb
|
||||
|
||||
Place 'update_uboot.itb' on a TFTP server, for example as
|
||||
'/tftpboot/update_uboot.itb', and set the 'updatefile' variable
|
||||
appropriately, for example in the U-Boot prompt:
|
||||
|
||||
setenv updatefile /tftpboot/update_uboot.itb
|
||||
saveenv
|
||||
|
||||
Now, when the system boots up and the update TFTP server specified in the
|
||||
'serverip' environment variable is accessible, the new U-Boot image will be
|
||||
automatically stored in Flash.
|
||||
|
||||
NOTE: do make sure that the 'u-boot.bin' image used to create the update
|
||||
file is a good, working image. Also make sure that the address in Flash
|
||||
where the update will be placed is correct. Making mistake here and
|
||||
attempting the auto-update can render the system unusable.
|
||||
|
||||
- doc/uImage.FIT/update3.its
|
||||
|
||||
An example containing three updates. It can be used to update Linux kernel,
|
||||
ramdisk and FDT blob stored in Flash. The procedure for preparing the update
|
||||
file is similar to the example above.
|
41
doc/uImage.FIT/update3.its
Normal file
41
doc/uImage.FIT/update3.its
Normal file
|
@ -0,0 +1,41 @@
|
|||
/*
|
||||
* Example Automatic software update file.
|
||||
*/
|
||||
/ {
|
||||
description = "Automatic software updates: kernel, ramdisk, FDT";
|
||||
#address-cells = <1>;
|
||||
|
||||
images {
|
||||
update@1 {
|
||||
description = "Linux kernel binary";
|
||||
data = /incbin/("./vmlinux.bin.gz");
|
||||
compression = "none";
|
||||
type = "firmware";
|
||||
load = <FF700000>;
|
||||
hash@1 {
|
||||
algo = "sha1";
|
||||
};
|
||||
};
|
||||
update@2 {
|
||||
description = "Ramdisk image";
|
||||
data = /incbin/("./ramdisk_image.gz");
|
||||
compression = "none";
|
||||
type = "firmware";
|
||||
load = <FF8E0000>;
|
||||
hash@1 {
|
||||
algo = "sha1";
|
||||
};
|
||||
};
|
||||
|
||||
update@3 {
|
||||
description = "FDT blob";
|
||||
data = /incbin/("./blob.fdt");
|
||||
compression = "none";
|
||||
type = "firmware";
|
||||
load = <FFAC0000>;
|
||||
hash@1 {
|
||||
algo = "sha1";
|
||||
};
|
||||
};
|
||||
};
|
||||
};
|
21
doc/uImage.FIT/update_uboot.its
Normal file
21
doc/uImage.FIT/update_uboot.its
Normal file
|
@ -0,0 +1,21 @@
|
|||
/*
|
||||
* Automatic software update for U-Boot
|
||||
* Make sure the flashing addresses ('load' prop) is correct for your board!
|
||||
*/
|
||||
/ {
|
||||
description = "Automatic U-Boot update";
|
||||
#address-cells = <1>;
|
||||
|
||||
images {
|
||||
update@1 {
|
||||
description = "U-Boot binary";
|
||||
data = /incbin/("./u-boot.bin");
|
||||
compression = "none";
|
||||
type = "firmware";
|
||||
load = <FFFC0000>;
|
||||
hash@1 {
|
||||
algo = "sha1";
|
||||
};
|
||||
};
|
||||
};
|
||||
};
|
Loading…
Reference in a new issue