* 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
diff --git a/CHANGELOG b/CHANGELOG
index 32957fe..eb21b03 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -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"
diff --git a/README b/README
index 2287f14..05f8b1f 100644
--- a/README
+++ b/README
@@ -2633,7 +2633,7 @@
----------------------
[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 @@
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 @@
Create your own board support subdirectory;
+ Create your own board config file;
+
while (!running) {
do {
Add / modify source code;
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 2cf625d..e138d78b 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -366,6 +366,7 @@
}
#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;
diff --git a/common/soft_i2c.c b/common/soft_i2c.c
index 7777480..6357404 100644
--- a/common/soft_i2c.c
+++ b/common/soft_i2c.c
@@ -287,8 +287,9 @@
{
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);
diff --git a/include/configs/CCM.h b/include/configs/CCM.h
index 0e0248d..0fb24db 100644
--- a/include/configs/CCM.h
+++ b/include/configs/CCM.h
@@ -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
/*-----------------------------------------------------------------------
diff --git a/include/configs/PM826.h b/include/configs/PM826.h
index dc06f95..13d7632 100644
--- a/include/configs/PM826.h
+++ b/include/configs/PM826.h
@@ -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) */
diff --git a/include/configs/TQM823L.h b/include/configs/TQM823L.h
index 4eec70c..bff0cece 100644
--- a/include/configs/TQM823L.h
+++ b/include/configs/TQM823L.h
@@ -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 }
diff --git a/include/configs/TQM850L.h b/include/configs/TQM850L.h
index 71ea2a8..a326375 100644
--- a/include/configs/TQM850L.h
+++ b/include/configs/TQM850L.h
@@ -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
-
/*-----------------------------------------------------------------------
*
*-----------------------------------------------------------------------
diff --git a/include/configs/TQM855L.h b/include/configs/TQM855L.h
index 68151b4..f204e01 100644
--- a/include/configs/TQM855L.h
+++ b/include/configs/TQM855L.h
@@ -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 */
diff --git a/include/configs/TQM860L.h b/include/configs/TQM860L.h
index a3d6b27..dc5eb3c 100644
--- a/include/configs/TQM860L.h
+++ b/include/configs/TQM860L.h
@@ -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 */
diff --git a/include/configs/lwmon.h b/include/configs/lwmon.h
index 587de2d..d227fff 100644
--- a/include/configs/lwmon.h
+++ b/include/configs/lwmon.h
@@ -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
*/
diff --git a/post/i2c.c b/post/i2c.c
index 2e38986..1b2e644 100644
--- a/post/i2c.c
+++ b/post/i2c.c
@@ -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 */
diff --git a/tools/env/Makefile b/tools/env/Makefile
new file mode 100644
index 0000000..7da1d2b
--- /dev/null
+++ b/tools/env/Makefile
@@ -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
+
+#########################################################################
+
diff --git a/tools/env/README b/tools/env/README
new file mode 100644
index 0000000..2b54adf
--- /dev/null
+++ b/tools/env/README
@@ -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.
diff --git a/tools/env/fw_env.c b/tools/env/fw_env.c
new file mode 100644
index 0000000..5bf75ac
--- /dev/null
+++ b/tools/env/fw_env.c
@@ -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;
+}
diff --git a/tools/env/fw_env.h b/tools/env/fw_env.h
new file mode 100644
index 0000000..d98edc9
--- /dev/null
+++ b/tools/env/fw_env.h
@@ -0,0 +1,44 @@
+/*
+ * (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);
diff --git a/tools/env/fw_env_main.c b/tools/env/fw_env_main.c
new file mode 100644
index 0000000..1c22e71
--- /dev/null
+++ b/tools/env/fw_env_main.c
@@ -0,0 +1,78 @@
+/*
+ * (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);
+}