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* Use 1-byte-read instead of -write for iprobe() function 

Add i2c commands to PM826 config

* extend I2C POST code: check for list on known addresses
This commit is contained in:
wdenk 2002-12-17 01:51:00 +00:00
parent 228f29ac6e
commit 6aff3115b9
17 changed files with 1062 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
CHANGELOG
View File

@ -2,6 +2,11 @@
Changes since for U-Boot 0.1.0:
======================================================================
* Use 1-byte-read instead of -write for iprobe() function
Add i2c commands to PM826 config
* extend I2C POST code: check for list on known addresses
* Improve log buffer code; use "loglevel" to decide which messages
to log on the console, too (like in Linux); get rid of "logstart"

6
README
View File

@ -2633,7 +2633,7 @@ U-Boot Porting Guide:
----------------------
[Based on messages by Jerry Van Baren in the U-Boot-Users mailing
list, Octover 2002]
list, October 2002]
int main (int argc, char *argv[])
@ -2650,6 +2650,8 @@ int main (int argc, char *argv[])
Download latest U-Boot source;
Subscribe to u-boot-users mailing list;
if (clueless) {
email ("Hi, I am new to U-Boot, how do I get started?");
}
@ -2668,6 +2670,8 @@ int main (int argc, char *argv[])
Create your own board support subdirectory;
Create your own board config file;
while (!running) {
do {
Add / modify source code;

1
common/cmd_bootm.c
View File

@ -366,6 +366,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
}
#ifdef CONFIG_LOGBUFFER
kbd=gd->bd;
/* Prevent initrd from overwriting logbuffer */
if (initrd_high < (kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD))
initrd_high = kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD;

3
common/soft_i2c.c
View File

@ -287,8 +287,9 @@ int i2c_probe(uchar addr)
{
int rc;
/* perform 1 byte read transaction */
send_start();
rc = write_byte ((addr << 1) | 1);
rc = write_byte ((addr << 1) | 0);
send_stop();
return (rc ? 1 : 0);

7
include/configs/CCM.h
View File

@ -212,6 +212,10 @@
#define CFG_ENV_IS_IN_FLASH 1
#define CFG_ENV_OFFSET 0x8000 /* Offset of Environment Sector */
#define CFG_ENV_SIZE 0x4000 /* Total Size of Environment Sector */
/* Address and size of Redundant Environment Sector */
#define CFG_ENV_OFFSET_REDUND (CFG_ENV_OFFSET+CFG_ENV_SIZE)
#define CFG_ENV_SIZE_REDUND (CFG_ENV_SIZE)
#else
/* Final version: environment in EEPROM */
#define CFG_ENV_IS_IN_EEPROM 1
@ -242,7 +246,8 @@
#define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
SYPCR_SWE | SYPCR_SWRI| SYPCR_SWP)
#else
#define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | SYPCR_SWP)
#define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
SYPCR_SWP)
#endif
/*-----------------------------------------------------------------------

1
include/configs/PM826.h
View File

@ -140,6 +140,7 @@
CFG_CMD_BEDBUG | \
CFG_CMD_DATE | \
CFG_CMD_EEPROM | \
CFG_CMD_I2C | \
CFG_CMD_DOC)
/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */

43
include/configs/TQM823L.h
View File

@ -57,11 +57,25 @@
#define CONFIG_PREBOOT "echo;echo Type \"run flash_nfs\" to mount root filesystem over NFS;echo"
#undef CONFIG_BOOTARGS
#define CONFIG_BOOTCOMMAND \
"bootp; " \
"setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath) " \
"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off; " \
"bootm"
#define CONFIG_EXTRA_ENV_SETTINGS \
"nfsargs=setenv bootargs root=/dev/nfs rw " \
"nfsroot=$(serverip):$(rootpath)\0" \
"ramargs=setenv bootargs root=/dev/ram rw\0" \
"addip=setenv bootargs $(bootargs) " \
"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask)" \
":$(hostname):$(netdev):off panic=1\0" \
"flash_nfs=run nfsargs addip;" \
"bootm $(kernel_addr)\0" \
"flash_self=run ramargs addip;" \
"bootm $(kernel_addr) $(ramdisk_addr)\0" \
"net_nfs=tftp 200000 $(bootfile);run nfsargs addip;bootm\0" \
"rootpath=/opt/eldk/ppc_8xx\0" \
"bootfile=/tftpboot/TQM860L/pImage\0" \
"kernel_addr=40040000\0" \
"ramdisk_addr=40100000\0" \
""
#define CONFIG_BOOTCOMMAND "run flash_self"
#define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
#undef CFG_LOADS_BAUD_CHANGE /* don't allow baudrate change */
@ -84,6 +98,7 @@
#define CONFIG_RTC_MPC8xx /* use internal RTC of MPC8xx */
#define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
CFG_CMD_ASKENV | \
CFG_CMD_DHCP | \
CFG_CMD_IDE | \
CFG_CMD_DATE )
@ -95,14 +110,22 @@
* Miscellaneous configurable options
*/
#define CFG_LONGHELP /* undef to save memory */
#define CFG_PROMPT "=> " /* Monitor Command Prompt */
#define CFG_PROMPT "=> " /* Monitor Command Prompt */
#if 0
#define CFG_HUSH_PARSER 1 /* use "hush" command parser */
#endif
#ifdef CFG_HUSH_PARSER
#define CFG_PROMPT_HUSH_PS2 "> "
#endif
#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
#define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
#define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
#else
#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
#endif
#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
#define CFG_MAXARGS 16 /* max number of command args */
#define CFG_MAXARGS 16 /* max number of command args */
#define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
#define CFG_MEMTEST_START 0x0400000 /* memtest works on */
@ -110,7 +133,7 @@
#define CFG_LOAD_ADDR 0x100000 /* default load address */
#define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
#define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
#define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }

44
include/configs/TQM850L.h
View File

@ -53,11 +53,25 @@
#define CONFIG_PREBOOT "echo;echo Type \"run flash_nfs\" to mount root filesystem over NFS;echo"
#undef CONFIG_BOOTARGS
#define CONFIG_BOOTCOMMAND \
"bootp; " \
"setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath) " \
"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off; " \
"bootm"
#define CONFIG_EXTRA_ENV_SETTINGS \
"nfsargs=setenv bootargs root=/dev/nfs rw " \
"nfsroot=$(serverip):$(rootpath)\0" \
"ramargs=setenv bootargs root=/dev/ram rw\0" \
"addip=setenv bootargs $(bootargs) " \
"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask)" \
":$(hostname):$(netdev):off panic=1\0" \
"flash_nfs=run nfsargs addip;" \
"bootm $(kernel_addr)\0" \
"flash_self=run ramargs addip;" \
"bootm $(kernel_addr) $(ramdisk_addr)\0" \
"net_nfs=tftp 200000 $(bootfile);run nfsargs addip;bootm\0" \
"rootpath=/opt/eldk/ppc_8xx\0" \
"bootfile=/tftpboot/TQM860L/pImage\0" \
"kernel_addr=40040000\0" \
"ramdisk_addr=40100000\0" \
""
#define CONFIG_BOOTCOMMAND "run flash_self"
#define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
#undef CFG_LOADS_BAUD_CHANGE /* don't allow baudrate change */
@ -76,6 +90,7 @@
#define CONFIG_RTC_MPC8xx /* use internal RTC of MPC8xx */
#define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
CFG_CMD_ASKENV | \
CFG_CMD_DHCP | \
CFG_CMD_IDE | \
CFG_CMD_DATE )
@ -87,14 +102,22 @@
* Miscellaneous configurable options
*/
#define CFG_LONGHELP /* undef to save memory */
#define CFG_PROMPT "=> " /* Monitor Command Prompt */
#define CFG_PROMPT "=> " /* Monitor Command Prompt */
#if 0
#define CFG_HUSH_PARSER 1 /* use "hush" command parser */
#endif
#ifdef CFG_HUSH_PARSER
#define CFG_PROMPT_HUSH_PS2 "> "
#endif
#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
#define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
#define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
#else
#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
#endif
#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
#define CFG_MAXARGS 16 /* max number of command args */
#define CFG_MAXARGS 16 /* max number of command args */
#define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
#define CFG_MEMTEST_START 0x0400000 /* memtest works on */
@ -102,7 +125,7 @@
#define CFG_LOAD_ADDR 0x100000 /* default load address */
#define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
#define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
#define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
@ -294,7 +317,6 @@
/* Offset for alternate registers */
#define CFG_ATA_ALT_OFFSET 0x0100
/*-----------------------------------------------------------------------
*
*-----------------------------------------------------------------------

56
include/configs/TQM855L.h
View File

@ -39,25 +39,39 @@
#define CONFIG_8xx_CONS_SMC1 1 /* Console is on SMC1 */
#undef CONFIG_8xx_CONS_SMC2
#undef CONFIG_8xx_CONS_NONE
#define CONFIG_BAUDRATE 115200 /* console baudrate = 115kbps */
#if 0
#define CONFIG_BOOTDELAY -1 /* autoboot disabled */
#else
#define CONFIG_BOOTDELAY 5 /* autoboot after 5 seconds */
#endif
#define CONFIG_CLOCKS_IN_MHZ 1 /* clocks passsed to Linux in MHz */
#define CONFIG_BOARD_TYPES 1 /* support board types */
#define CONFIG_PREBOOT "echo;echo Type \"run flash_nfs\" to mount root filesystem over NFS;echo"
#define CONFIG_PREBOOT "echo;" \
"echo Type \"run flash_nfs\" to mount root filesystem over NFS;" \
"echo"
#undef CONFIG_BOOTARGS
#define CONFIG_BOOTCOMMAND \
"bootp; " \
"setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath) " \
"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off; " \
"bootm"
#define CONFIG_EXTRA_ENV_SETTINGS \
"nfsargs=setenv bootargs root=/dev/nfs rw " \
"nfsroot=$(serverip):$(rootpath)\0" \
"ramargs=setenv bootargs root=/dev/ram rw\0" \
"addip=setenv bootargs $(bootargs) " \
"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask)" \
":$(hostname):$(netdev):off panic=1\0" \
"flash_nfs=run nfsargs addip;" \
"bootm $(kernel_addr)\0" \
"flash_self=run ramargs addip;" \
"bootm $(kernel_addr) $(ramdisk_addr)\0" \
"net_nfs=tftp 200000 $(bootfile);run nfsargs addip;bootm\0" \
"rootpath=/opt/eldk/ppc_8xx\0" \
"bootfile=/tftpboot/TQM860L/pImage\0" \
"kernel_addr=40040000\0" \
"ramdisk_addr=40100000\0" \
""
#define CONFIG_BOOTCOMMAND "run flash_self"
#define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
#undef CFG_LOADS_BAUD_CHANGE /* don't allow baudrate change */
@ -76,6 +90,7 @@
#define CONFIG_RTC_MPC8xx /* use internal RTC of MPC8xx */
#define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
CFG_CMD_ASKENV | \
CFG_CMD_DHCP | \
CFG_CMD_IDE | \
CFG_CMD_DATE )
@ -87,14 +102,22 @@
* Miscellaneous configurable options
*/
#define CFG_LONGHELP /* undef to save memory */
#define CFG_PROMPT "=> " /* Monitor Command Prompt */
#define CFG_PROMPT "=> " /* Monitor Command Prompt */
#if 0
#define CFG_HUSH_PARSER 1 /* use "hush" command parser */
#endif
#ifdef CFG_HUSH_PARSER
#define CFG_PROMPT_HUSH_PS2 "> "
#endif
#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
#define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
#define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
#else
#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
#endif
#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
#define CFG_MAXARGS 16 /* max number of command args */
#define CFG_MAXARGS 16 /* max number of command args */
#define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
#define CFG_MEMTEST_START 0x0400000 /* memtest works on */
@ -102,7 +125,7 @@
#define CFG_LOAD_ADDR 0x100000 /* default load address */
#define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
#define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
#define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
@ -294,7 +317,6 @@
/* Offset for alternate registers */
#define CFG_ATA_ALT_OFFSET 0x0100
/*-----------------------------------------------------------------------
*
*-----------------------------------------------------------------------
@ -441,5 +463,7 @@
#define BOOTFLAG_WARM 0x02 /* Software reboot */
#define CONFIG_SCC1_ENET
#define CONFIG_FEC_ENET
#define CONFIG_ETHPRIME "SCC ETHERNET"
#endif /* __CONFIG_H */

28
include/configs/TQM860L.h
View File

@ -49,15 +49,29 @@
#define CONFIG_BOARD_TYPES 1 /* support board types */
#define CONFIG_PREBOOT "echo;" \
"echo Type \"run flash_nfs\" to mount root filesystem over NFS;" \
"echo"
"echo Type \"run flash_nfs\" to mount root filesystem over NFS;" \
"echo"
#undef CONFIG_BOOTARGS
#define CONFIG_BOOTCOMMAND \
"bootp; " \
"setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath) " \
"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off; " \
"bootm"
#define CONFIG_EXTRA_ENV_SETTINGS \
"nfsargs=setenv bootargs root=/dev/nfs rw " \
"nfsroot=$(serverip):$(rootpath)\0" \
"ramargs=setenv bootargs root=/dev/ram rw\0" \
"addip=setenv bootargs $(bootargs) " \
"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask)" \
":$(hostname):$(netdev):off panic=1\0" \
"flash_nfs=run nfsargs addip;" \
"bootm $(kernel_addr)\0" \
"flash_self=run ramargs addip;" \
"bootm $(kernel_addr) $(ramdisk_addr)\0" \
"net_nfs=tftp 200000 $(bootfile);run nfsargs addip;bootm\0" \
"rootpath=/opt/eldk/ppc_8xx\0" \
"bootfile=/tftpboot/TQM860L/pImage\0" \
"kernel_addr=40040000\0" \
"ramdisk_addr=40100000\0" \
""
#define CONFIG_BOOTCOMMAND "run flash_self"
#define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
#undef CFG_LOADS_BAUD_CHANGE /* don't allow baudrate change */

11
include/configs/lwmon.h
View File

@ -288,6 +288,17 @@
#endif /* CONFIG_USE_FRAM */
#define CFG_EEPROM_PAGE_WRITE_BITS 4
/* List of I2C addresses to be verified by POST */
#define I2C_ADDR_LIST { /* CFG_I2C_AUDIO_ADDR, */ \
CFG_I2C_SYSMON_ADDR, \
CFG_I2C_RTC_ADDR, \
CFG_I2C_POWER_A_ADDR, \
CFG_I2C_POWER_B_ADDR, \
CFG_I2C_KEYBD_ADDR, \
CFG_I2C_PICIO_ADDR, \
CFG_I2C_EEPROM_ADDR, \
}
/*-----------------------------------------------------------------------
* Cache Configuration
*/

51
post/i2c.c
View File

@ -29,8 +29,13 @@
* I2C test
*
* For verifying the I2C bus, a full I2C bus scanning is performed.
* If any I2C device is found, the test is considered as passed,
* otherwise failed.
*
* #ifdef I2C_ADDR_LIST
* The test is considered as passed if all the devices and
* only the devices in the list are found.
* #else [ ! I2C_ADDR_LIST ]
* The test is considered as passed if any I2C device is found.
* #endif
*/
#include <post.h>
@ -41,14 +46,48 @@
int i2c_post_test (int flags)
{
unsigned int i;
unsigned int chips = 0;
unsigned int good = 0;
#ifdef I2C_ADDR_LIST
unsigned int bad = 0;
int j;
unsigned char i2c_addr_list[] = I2C_ADDR_LIST;
unsigned char i2c_miss_list[] = I2C_ADDR_LIST;
#endif
for (i = 0; i < 128; i++) {
if (i2c_probe (i) == 0)
chips++;
if (i2c_probe (i) == 0) {
#ifndef I2C_ADDR_LIST
good++;
#else /* I2C_ADDR_LIST */
for (j=0; j<sizeof(i2c_addr_list); ++j) {
if (i == i2c_addr_list[j]) {
good++;
i2c_miss_list[j] = 0xFF;
break;
}
}
if (j == sizeof(i2c_addr_list)) {
bad++;
post_log ("I2C: addr %02X not expected\n",
i);
}
#endif /* I2C_ADDR_LIST */
}
}
return chips > 0 ? 0 : -1;
#ifndef I2C_ADDR_LIST
return good > 0 ? 0 : -1;
#else /* I2C_ADDR_LIST */
if (good != sizeof(i2c_addr_list)) {
for (j=0; j<sizeof(i2c_miss_list); ++j) {
if (i2c_miss_list[j] != 0xFF) {
post_log ("I2C: addr %02X did not respond\n",
i2c_miss_list[j]);
}
}
}
return ((good == sizeof(i2c_addr_list)) && (bad == 0)) ? 0 : -1;
#endif
}
#endif /* CONFIG_POST & CFG_POST_I2C */

46
tools/env/Makefile vendored Normal file
View File

@ -0,0 +1,46 @@
#
# (C) Copyright 2002
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# 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
#
SOURCES := crc32.c fw_env.c fw_env_main.c
HEADERS := fw_env.h
all: fw_printenv
fw_printenv: $(SOURCES) $(HEADERS)
$(CROSS_COMPILE)gcc -Wall -DUSE_HOSTCC $(SOURCES) -o fw_printenv
clean:
rm -f fw_printenv crc32.c
crc32.c:
ln -s ../../lib_generic/crc32.c crc32.c
#########################################################################
.depend: Makefile $(SOURCES)
$(CC) -M $(HOST_CFLAGS) $(CPPFLAGS) -DUSE_HOSTCC $(SOURCES) > $@
sinclude .depend
#########################################################################

29
tools/env/README vendored Normal file
View File

@ -0,0 +1,29 @@
This is a demo implementation of a Linux command line tool to access
the U-Boot's environment variables.
Configuration is done via #defines in the fw_env.h file. The
following lines are relevant:
#define HAVE_REDUND /* For systems with 2 env sectors */
#define DEVICE1_NAME "/dev/mtd1"
#define DEVICE2_NAME "/dev/mtd2"
#define ENV1_SIZE 0x4000
#define DEVICE1_ESIZE 0x4000
#define ENV2_SIZE 0x4000
#define DEVICE2_ESIZE 0x4000
Current configuration matches the environment layout of the TRAB
board.
Un-define HAVE_REDUND, if you want to use the utlities on a system
that does not have support for redundant environment enabled. The
DEVICEx_NAME constants define which MTD character device(s) is (are)
to be used to access the environment. If HAVE_REDUND is undefined,
DEVICE2_NAME is ignored, as is ENV2_SIZE and DEVICE2_ESIZE. ENVx_SIZE
defines the size in bytes taken by the environment, which may be less
then flash sector size, if the environment takes less then 1 sector.
DEVICEx_ESIZE defines the size of the first sector in the flash
partition where the environment resides. It is assumed that the
environment is located in the first ENVx_SIZE bytes of the device
DEVICEx_NAME.

662
tools/env/fw_env.c vendored Normal file
View File

@ -0,0 +1,662 @@
/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* 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 <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <linux/mtd/mtd.h>
#include "fw_env.h"
typedef unsigned char uchar;
#define CMD_GETENV "fw_printenv"
#define CMD_SETENV "fw_setenv"
typedef struct envdev_s {
uchar devname[16]; /* Device name */
ulong env_size; /* environment size */
ulong erase_size; /* device erase size */
} envdev_t;
static envdev_t envdevices[2];
static int curdev;
#define DEVNAME(i) envdevices[(i)].devname
#define ENVSIZE(i) envdevices[(i)].env_size
#define DEVESIZE(i) envdevices[(i)].erase_size
#define CFG_ENV_SIZE ENVSIZE(curdev)
#ifdef HAVE_REDUND
#define ENV_SIZE (CFG_ENV_SIZE - sizeof(long) - 1)
#else
#define ENV_SIZE (CFG_ENV_SIZE - sizeof(long))
#endif
typedef struct environment_s {
ulong crc; /* CRC32 over data bytes */
uchar flags; /* active or obsolete */
uchar *data;
} env_t;
static env_t environment;
static int valid = 0;
#ifdef HAVE_REDUND
static uchar active_flag = 1;
static uchar obsolete_flag = 0;
#endif
#define XMK_STR(x) #x
#define MK_STR(x) XMK_STR(x)
static uchar default_environment[] = {
#ifdef CONFIG_BOOTARGS
"bootargs=" CONFIG_BOOTARGS "\0"
#endif
#ifdef CONFIG_BOOTCOMMAND
"bootcmd=" CONFIG_BOOTCOMMAND "\0"
#endif
#if (CONFIG_BOOTDELAY >= 0)
"bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0"
#endif
#if (CONFIG_BAUDRATE >= 0)
"baudrate=" MK_STR(CONFIG_BAUDRATE) "\0"
#endif
#ifdef CONFIG_ETHADDR
"ethaddr=" MK_STR(CONFIG_ETHADDR) "\0"
#endif
#ifdef CONFIG_IPADDR
"ipaddr=" MK_STR(CONFIG_IPADDR) "\0"
#endif
#ifdef CONFIG_SERVERIP
"serverip=" MK_STR(CONFIG_SERVERIP) "\0"
#endif
"\0"
};
static int flash_io (int mode);
static uchar *envmatch(uchar *s1, uchar *s2);
static int env_init(void);
static int parse_config(void);
/*
* Search the environment for a variable.
* Return the value, if found, or NULL, if not found.
*/
unsigned char *fw_getenv (unsigned char *name)
{
uchar *env, *nxt;
if (env_init())
return (NULL);
for (env=environment.data; *env; env=nxt+1) {
uchar *val;
for (nxt=env; *nxt; ++nxt) {
if (nxt >= &environment.data[ENV_SIZE]) {
fprintf (stderr, "## Error: "
"environment not terminated\n");
return (NULL);
}
}
val=envmatch(name, env);
if (!val)
continue;
return (val);
}
return (NULL);
}
/*
* Print the current definition of one, or more, or all
* environment variables
*/
void fw_printenv(int argc, char *argv[])
{
uchar *env, *nxt;
int i, n_flag;
if (env_init())
return;
if (argc == 1) { /* Print all env variables */
for (env=environment.data; *env; env=nxt+1) {
for (nxt=env; *nxt; ++nxt) {
if (nxt >= &environment.data[ENV_SIZE]) {
fprintf (stderr, "## Error: "
"environment not terminated\n");
return;
}
}
printf("%s\n", env);
}
return;
}
if (strcmp(argv[1], "-n") == 0) {
n_flag = 1;
++argv;
--argc;
if (argc != 2) {
fprintf (stderr, "## Error: "
"`-n' option requires exactly one argument\n");
return;
}
} else {
n_flag = 0;
}
for (i=1; i<argc; ++i) { /* print single env variables */
uchar *name = argv[i];
uchar *val = NULL;
for (env=environment.data; *env; env=nxt+1) {
for (nxt=env; *nxt; ++nxt) {
if (nxt >= &environment.data[ENV_SIZE]) {
fprintf (stderr, "## Error: "
"environment not terminated\n");
return;
}
}
val=envmatch(name, env);
if (val) {
if (!n_flag) {
fputs (name, stdout);
putc ('=', stdout);
}
puts (val);
break;
}
}
if (!val)
fprintf (stderr, "## Error: \"%s\" not defined\n",
name);
}
}
/*
* Deletes or sets environment variables. Returns errno style error codes:
* 0 - OK
* EINVAL - need at least 1 argument
* EROFS - certain variables ("ethaddr", "serial#") cannot be
* modified or deleted
*
*/
int fw_setenv (int argc, char *argv[])
{
int i, len;
uchar *env, *nxt;
uchar *oldval = NULL;
uchar *name;
if (argc < 2) {
return (EINVAL);
}
if (env_init())
return (errno);
name = argv[1];
/*
* search if variable with this name already exists
*/
for (env=environment.data; *env; env=nxt+1) {
for (nxt=env; *nxt; ++nxt) {
if (nxt >= &environment.data[ENV_SIZE]) {
fprintf (stderr, "## Error: "
"environment not terminated\n");
return (EINVAL);
}
}
if ((oldval=envmatch(name, env)) != NULL)
break;
}
/*
* Delete any existing definition
*/
if (oldval) {
/*
* Ethernet Address and serial# can be set only once
*/
if ((strcmp (name, "ethaddr") == 0) ||
(strcmp (name, "serial#") == 0) ) {
fprintf (stderr, "Can't overwrite \"%s\"\n", name);
return (EROFS);
}
if (*++nxt == '\0') {
*env = '\0';
} else {
for (;;) {
*env = *nxt++;
if ((*env == '\0') && (*nxt == '\0'))
break;
++env;
}
}
*++env = '\0';
}
/* Delete only ? */
if (argc < 3)
goto WRITE_FLASH;
/*
* Append new definition at the end
*/
for (env=environment.data; *env || *(env+1); ++env)
;
if (env > environment.data)
++env;
/*
* Overflow when:
* "name" + "=" + "val" +"\0\0" > CFG_ENV_SIZE - (env-environment)
*/
len = strlen(name) + 2;
/* add '=' for first arg, ' ' for all others */
for (i=2; i<argc; ++i) {
len += strlen(argv[i]) + 1;
}
if (len > (&environment.data[ENV_SIZE]-env)) {
fprintf (stderr,
"Error: environment overflow, \"%s\" deleted\n",
name);
return (-1);
}
while ((*env = *name++) != '\0')
env++;
for (i=2; i<argc; ++i) {
uchar *val = argv[i];
*env = (i==2) ? '=' : ' ';
while ((*++env = *val++) != '\0')
;
}
/* end is marked with double '\0' */
*++env = '\0';
WRITE_FLASH:
/* Update CRC */
environment.crc = crc32(0, environment.data, ENV_SIZE);
/* write environment back to flash */
if (flash_io (O_RDWR)) {
fprintf (stderr,
"Error: can't write fw_env to flash\n");
return (-1);
}
return (0);
}
static int flash_io (int mode)
{
int fd, fdr, rc, otherdev, len, resid;
erase_info_t erase;
char *data;
if ((fd = open(DEVNAME(curdev), mode)) < 0) {
fprintf (stderr,
"Can't open %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
len = sizeof(environment.crc) + sizeof(environment.flags);
if (mode == O_RDWR) {
#ifdef HAVE_REDUND
/* switch to next partition for writing */
otherdev = !curdev;
if ((fdr = open(DEVNAME(otherdev), mode)) < 0) {
fprintf (stderr,
"Can't open %s: %s\n",
DEVNAME(otherdev), strerror(errno));
return (-1);
}
#else
otherdev = curdev;
fdr = fd;
len = sizeof(environment.crc);
#endif
printf("Unlocking flash...\n");
erase.length = DEVESIZE(otherdev);
erase.start = 0;
ioctl (fdr, MEMUNLOCK, &erase);
#ifdef HAVE_REDUND
erase.length = DEVESIZE(curdev);
erase.start = 0;
ioctl (fd, MEMUNLOCK, &erase);
environment.flags = active_flag;
#endif
printf("Done\n");
resid = DEVESIZE(otherdev) - CFG_ENV_SIZE;
if (resid) {
if ((data = malloc(resid)) == NULL) {
fprintf(stderr,
"Cannot malloc %d bytes: %s\n",
resid, strerror(errno));
return (-1);
}
if (lseek (fdr, CFG_ENV_SIZE, SEEK_SET) == -1) {
fprintf (stderr,
"seek error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
if ((rc = read (fdr, data, resid)) != resid) {
fprintf (stderr,
"read error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
if (lseek (fdr, 0, SEEK_SET) == -1) {
fprintf (stderr,
"seek error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
}
printf("Erasing old environment...\n");
erase.length = DEVESIZE(otherdev);
if (ioctl (fdr, MEMERASE, &erase) != 0) {
fprintf (stderr, "MTD erase error on %s: %s\n",
DEVNAME(otherdev), strerror(errno));
return (-1);
}
printf("Done\n");
printf("Writing environment to %s...\n",DEVNAME(otherdev));
if (write(fdr, &environment, len) != len) {
fprintf (stderr,
"CRC write error on %s: %s\n",
DEVNAME(otherdev), strerror(errno));
return (-1);
}
if (write(fdr, environment.data, ENV_SIZE) != ENV_SIZE) {
fprintf (stderr,
"Write error on %s: %s\n",
DEVNAME(otherdev), strerror(errno));
return (-1);
}
if (resid) {
if (write (fdr, data, resid) != resid) {
fprintf (stderr,
"write error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
free(data);
}
#ifdef HAVE_REDUND
/* change flag on current active env partition */
if (lseek (fd, sizeof(ulong), SEEK_SET) == -1) {
fprintf (stderr,
"seek error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
if (write (fd, &obsolete_flag, sizeof(obsolete_flag)) !=
sizeof(obsolete_flag)) {
fprintf (stderr,
"Write error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
#endif
printf("Done\n");
printf("Locking ...\n");
erase.length = DEVESIZE(otherdev);
erase.start = 0;
ioctl (fdr, MEMLOCK, &erase);
#ifdef HAVE_REDUND
erase.length = DEVESIZE(curdev);
erase.start = 0;
ioctl (fd, MEMLOCK, &erase);
if (close(fdr)) {
fprintf (stderr,
"I/O error on %s: %s\n",
DEVNAME(otherdev), strerror(errno));
return (-1);
}
#endif
printf("Done\n");
} else {
#ifndef HAVE_REDUND
len = sizeof(environment.crc);
#endif
if (read (fd, &environment, len) != len) {
fprintf (stderr,
"CRC read error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
if ((rc = read (fd, environment.data, ENV_SIZE)) != ENV_SIZE) {
fprintf (stderr,
"Read error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
}
if (close(fd)) {
fprintf (stderr,
"I/O error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
/* everything ok */
return (0);
}
/*
* s1 is either a simple 'name', or a 'name=value' pair.
* s2 is a 'name=value' pair.
* If the names match, return the value of s2, else NULL.
*/
static uchar *
envmatch (uchar *s1, uchar *s2)
{
while (*s1 == *s2++)
if (*s1++ == '=')
return(s2);
if (*s1 == '\0' && *(s2-1) == '=')
return(s2);
return(NULL);
}
/*
* Prevent confusion if running from erased flash memory
*/
static int env_init(void)
{
int crc1, crc1_ok;
uchar *addr1;
#ifdef HAVE_REDUND
int crc2, crc2_ok;
uchar flag1, flag2, *addr2;
#endif
if (!valid) {
if (parse_config()) /* should fill envdevices */
return 1;
if ((addr1 = calloc (1, ENV_SIZE)) == NULL) {
fprintf (stderr,
"Not enough memory for environment (%ld bytes)\n",
ENV_SIZE);
return (errno);
}
/* read environment from FLASH to local buffer */
environment.data = addr1;
curdev = 0;
if (flash_io (O_RDONLY)) {
return (errno);
}
crc1_ok = ((crc1 = crc32(0, environment.data, ENV_SIZE))
== environment.crc);
#ifndef HAVE_REDUND
if (!crc1_ok) {
fprintf (stderr,
"Warning: Bad CRC, using default environment\n");
environment.data = default_environment;
free(addr1);
}
#else
flag1 = environment.flags;
curdev = 1;
if ((addr2 = calloc (1, ENV_SIZE)) == NULL) {
fprintf (stderr,
"Not enough memory for environment (%ld bytes)\n",
ENV_SIZE);
return (errno);
}
environment.data = addr2;
if (flash_io (O_RDONLY)) {
return (errno);
}
crc2_ok = ((crc2 = crc32(0, environment.data, ENV_SIZE))
== environment.crc);
flag2 = environment.flags;
if (crc1_ok && ! crc2_ok) {
environment.data = addr1;
environment.flags = flag1;
environment.crc = crc1;
curdev = 0;
free(addr2);
}
else if (! crc1_ok && crc2_ok) {
environment.data = addr2;
environment.flags = flag2;
environment.crc = crc2;
curdev = 1;
free(addr1);
}
else if (! crc1_ok && ! crc2_ok) {
fprintf (stderr,
"Warning: Bad CRC, using default environment\n");
environment.data = default_environment;
curdev = 0;
free(addr2);
free(addr1);
}
else if (flag1 == active_flag && flag2 == obsolete_flag) {
environment.data = addr1;
environment.flags = flag1;
environment.crc = crc1;
curdev = 0;
free(addr2);
}
else if (flag1 == obsolete_flag && flag2 == active_flag) {
environment.data = addr2;
environment.flags = flag2;
environment.crc = crc2;
curdev = 1;
free(addr1);
}
else if (flag1 == flag2) {
environment.data = addr1;
environment.flags = flag1;
environment.crc = crc1;
curdev = 0;
free(addr2);
}
else if (flag1 == 0xFF) {
environment.data = addr1;
environment.flags = flag1;
environment.crc = crc1;
curdev = 0;
free(addr2);
}
else if (flag2 == 0xFF) {
environment.data = addr2;
environment.flags = flag2;
environment.crc = crc2;
curdev = 1;
free(addr1);
}
#endif
valid = 1;
}
return (0);
}
static int parse_config()
{
struct stat st;
if (stat (DEVICE1_NAME, &st)) {
fprintf (stderr,
"Cannot access MTD device %s: %s\n",
DEVICE1_NAME, strerror(errno));
return 1;
}
strcpy(DEVNAME(0), DEVICE1_NAME);
ENVSIZE(0) = ENV1_SIZE;
DEVESIZE(0) = DEVICE1_ESIZE;
#ifdef HAVE_REDUND
if (stat (DEVICE2_NAME, &st)) {
fprintf (stderr,
"Cannot access MTD device %s: %s\n",
DEVICE2_NAME, strerror(errno));
return 1;
}
strcpy(DEVNAME(1), DEVICE2_NAME);
ENVSIZE(1) = ENV2_SIZE;
DEVESIZE(1) = DEVICE2_ESIZE;
#endif
return 0;
}

44
tools/env/fw_env.h vendored Normal file
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/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* 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
*/
#define HAVE_REDUND /* For systems with 2 env sectors */
#define DEVICE1_NAME "/dev/mtd1"
#define DEVICE2_NAME "/dev/mtd2"
#define ENV1_SIZE 0x4000
#define DEVICE1_ESIZE 0x4000
#define ENV2_SIZE 0x4000
#define DEVICE2_ESIZE 0x4000
#define CONFIG_BAUDRATE 115200
#define CONFIG_BOOTDELAY 5 /* autoboot after 5 seconds */
#define CONFIG_BOOTCOMMAND \
"bootp; " \
"setenv bootargs root=/dev/nfs nfsroot=$(serverip):$(rootpath) " \
"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off; " \
"bootm"
extern void fw_printenv(int argc, char *argv[]);
extern unsigned char *fw_getenv (unsigned char *name);
extern int fw_setenv (int argc, char *argv[]);
extern unsigned long crc32 (unsigned long, const unsigned char *, unsigned);

78
tools/env/fw_env_main.c vendored Normal file
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/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* 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
*/
/*
* Command line user interface to firmware (=PPCBoot) environment.
*
* Implements:
* fw_printenv [ name ... ]
* - prints the values of the environment variables
* "name", or the whole environment if no names are
* specified
* fw_setenv name [ value ... ]
* - If a name without any values is given, the variable
* with this name is deleted from the environment;
* otherwise, all "value" arguments are concatenated,
* separated by sinlge blank characters, and the
* resulting string is assigned to the environment
* variable "name"
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "fw_env.h"
#define CMD_PRINTENV "fw_printenv"
#define CMD_SETENV "fw_setenv"
int
main(int argc, char *argv[])
{
char *p;
char *cmdname = *argv;
if ((p = strrchr (cmdname, '/')) != NULL) {
cmdname = p + 1;
}
if (strcmp(cmdname, CMD_PRINTENV) == 0) {
fw_printenv (argc, argv);
return (EXIT_SUCCESS);
} else if (strcmp(cmdname, CMD_SETENV) == 0) {
if (fw_setenv (argc, argv) != 0)
return (EXIT_FAILURE);
return (EXIT_SUCCESS);
}
fprintf (stderr,
"Identity crisis - may be called as `" CMD_PRINTENV
"' or as `" CMD_SETENV "' but not as `%s'\n",
cmdname);
return (EXIT_FAILURE);
}