*** empty log message ***

Add i2c commands to PM826 config

* extend I2C POST code: check for list on known addresses

CHANGELOG

@@ -1,7 +1,18 @@
 ======================================================================
-Changes since for U-Boot 0.1.0:
+Changes for U-Boot 0.2.0:
 ======================================================================
 
+* 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"
+
+* Add command line tool to access the U-Boot's environment
+  (board-specific for TRAB now, to be fixed later)
+
 * Patch by Hans-Joerg Frieden, 06 Dec 2002
   Fix misc problems with AmigaOne support
 

Makefile

@@ -658,6 +658,7 @@ clean:
 	rm -f tools/img2srec tools/mkimage tools/envcrc tools/gen_eth_addr
 	rm -f tools/easylogo/easylogo tools/bmp_logo
 	rm -f tools/gdb/astest tools/gdb/gdbcont tools/gdb/gdbsend
+	rm -f tools/env/fw_printenv tools/env/fw_setenv
 
 clobber:	clean
 	find . -type f \
@@ -667,7 +668,7 @@ clobber:	clean
 	rm -f $(OBJS) *.bak tags TAGS
 	rm -fr *.*~
 	rm -f u-boot u-boot.bin u-boot.elf u-boot.srec u-boot.map System.map
-	rm -f tools/crc32.c tools/environment.c
+	rm -f tools/crc32.c tools/environment.c tools/env/crc32.c
 	rm -f include/asm/arch include/asm
 
 mrproper \

README

@@ -104,6 +104,18 @@ the string "u_boot" or on "U_BOOT". Example:
 	IH_OS_U_BOOT		u_boot_hush_start
 
 
+Versioning:
+===========
+
+U-Boot uses a 3 level version number containing a version, a
+sub-version, and a patchlevel: "U-Boot-2.34.5" means version "2",
+sub-version "34", and patchlevel "4".
+
+The patchlevel is used to indicate certain stages of development
+between released versions, i. e. officially released versions of
+U-Boot will always have a patchlevel of "0".
+
+
 Directory Hierarchy:
 ====================
 
@@ -2633,7 +2645,7 @@ 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 +2662,8 @@ 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 +2682,8 @@ 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;

common/cmd_bootm.c

@@ -51,6 +51,10 @@
 #include <asm/cache.h>
 #endif
 
+#ifdef CONFIG_LOGBUFFER
+#include <logbuff.h>
+#endif
+
 /*
  * Some systems (for example LWMON) have very short watchdog periods;
  * we must make sure to split long operations like memmove() or
@@ -357,19 +361,16 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 		 * turning the "load high" feature off. This is intentional.
 		 */
 		initrd_high = simple_strtoul(s, NULL, 16);
-	} else {			/* not set, no restrictions to load high */
+	} else {	/* not set, no restrictions to load high */
 		initrd_high = ~0;
 	}
 
 #ifdef CONFIG_LOGBUFFER
 	kbd=gd->bd;
-	if ((s = getenv ("logstart")) != NULL) {
-		kbd->bi_sramstart = simple_strtoul(s, NULL, 16);
-		/* Prevent initrd from overwriting logbuffer */
-		if (initrd_high < kbd->bi_sramstart)
-			initrd_high = kbd->bi_sramstart-1024;
-	}
-	debug ("## Logbuffer at 0x%08lX ", kbd->bi_sramstart);
+	/* Prevent initrd from overwriting logbuffer */
+	if (initrd_high < (kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD))
+		initrd_high = kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD;
+	debug ("## Logbuffer at 0x%08lX ", kbd->bi_memsize-LOGBUFF_LEN);
 #endif
 
 	/*

common/cmd_log.c

@@ -2,6 +2,9 @@
  * (C) Copyright 2002
  * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
  *
+ * Code used from linux/kernel/printk.c
+ * Copyright (C) 1991, 1992  Linus Torvalds
+ *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
@@ -19,6 +22,18 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
+ *
+ * Comments:
+ *
+ * After relocating the code, the environment variable "loglevel" is
+ * copied to console_loglevel.  The functionality is similar to the
+ * handling in the Linux kernel, i.e. messages logged with a priority
+ * less than console_loglevel are also output to stdout.
+ *
+ * If you want messages with the default level (e.g. POST messages) to
+ * appear on stdout also, make sure the environment variable
+ * "loglevel" is set at boot time to a number higher than
+ * default_message_loglevel below.
  */
 
 /*
@@ -28,13 +43,11 @@
 #include <common.h>
 #include <command.h>
 #include <devices.h>
+#include <post.h>
 #include <logbuff.h>
 
 #if defined(CONFIG_LOGBUFFER)
 
-#define LOG_BUF_LEN	(16384)
-#define LOG_BUF_MASK	(LOG_BUF_LEN-1)
-
 /* Local prototypes */
 static void logbuff_putc (const char c);
 static void logbuff_puts (const char *s);
@@ -42,17 +55,44 @@ static int logbuff_printk(const char *line);
 
 static char buf[1024];
 
+/* This combination will not print messages with the default loglevel */
 static unsigned console_loglevel = 3;
 static unsigned default_message_loglevel = 4;
-static unsigned long log_size;
-static unsigned char *log_buf=NULL;
-static unsigned long *ext_log_start, *ext_logged_chars;
+static unsigned char *log_buf = NULL;
+static unsigned long *ext_log_size;
+static unsigned long *ext_log_start;
+static unsigned long *ext_logged_chars;
+#define log_size (*ext_log_size)
 #define log_start (*ext_log_start)
 #define logged_chars (*ext_logged_chars)
 
 /* Forced by code, eh! */
 #define LOGBUFF_MAGIC 0xc0de4ced
 
+/* The mapping used here has to be the same as in setup_ext_logbuff ()
+   in linux/kernel/printk */
+void logbuff_init_ptrs (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	unsigned long *ext_tag;
+	char *s;
+
+	log_buf = (unsigned char *)(gd->bd->bi_memsize-LOGBUFF_LEN);
+	ext_tag = (unsigned long *)(log_buf)-4;
+	ext_log_start = (unsigned long *)(log_buf)-3;
+	ext_log_size = (unsigned long *)(log_buf)-2;
+	ext_logged_chars = (unsigned long *)(log_buf)-1;
+ 	if (*ext_tag!=LOGBUFF_MAGIC) {
+ 		logged_chars = log_size = log_start = 0;
+ 		*ext_tag = LOGBUFF_MAGIC;
+ 	}
+	/* Initialize default loglevel if present */
+	if ((s = getenv ("loglevel")) != NULL)
+		console_loglevel = (int)simple_strtoul (s, NULL, 10);
+
+	gd->post_log_word |= LOGBUFF_INITIALIZED;
+}
+
 int drv_logbuff_init (void)
 {
 	device_t logdev;
@@ -75,45 +115,26 @@ int drv_logbuff_init (void)
 static void logbuff_putc (const char c)
 {
 	char buf[2];
-	buf[0]=c;
-	buf[1]='\0';
-	logbuff_printk(buf);
+	buf[0] = c;
+	buf[1] = '\0';
+	logbuff_printk (buf);
 }
 
 static void logbuff_puts (const char *s)
 {
-	char buf[512];
-
-	sprintf(buf, "%s\n", s);
-	logbuff_printk(buf);
+	logbuff_printk (s);
 }
 
 void logbuff_log(char *msg)
 {
 	DECLARE_GLOBAL_DATA_PTR;
 
-	if ((gd->flags & GD_FLG_RELOC)&&(getenv ("logstart") != NULL)) {
-		logbuff_printk(msg);
+	if ((gd->post_log_word & LOGBUFF_INITIALIZED)) {
+		logbuff_printk (msg);
 	} else {
-		puts(msg);
-	}
-}
-
-void logbuff_reset (void)
-{
-	char *s;
-	unsigned long *ext_tag;
-
-	if ((s = getenv ("logstart")) != NULL) {
-		log_buf = (unsigned char *)simple_strtoul(s, NULL, 16);
-		ext_tag=(unsigned long *)(log_buf)-3;
-		ext_log_start=(unsigned long *)(log_buf)-2;
-		ext_logged_chars=(unsigned long *)(log_buf)-1;
-/*		if (*ext_tag!=LOGBUFF_MAGIC) {	*/
-			logged_chars=log_start=0;
-			*ext_tag=LOGBUFF_MAGIC;
-/*		}	*/
-		log_size=logged_chars;
+		/* Can happen only for pre-relocated errors as logging */
+		/* at that stage should be disabled                    */
+		puts (msg);
 	}
 }
 
@@ -132,34 +153,39 @@ int do_log (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	char *s;
 	unsigned long i;
 
-	if (log_buf==NULL) {
-		printf ("No logbuffer defined!  Set 'logstart' to use this feature.\n");
-		return 1;
+	if (strcmp(argv[1],"append") == 0) {
+		/* Log concatenation of all arguments separated by spaces */
+		for (i=2; i<argc; i++) {
+			if (i<argc-1) {
+				logbuff_printk (argv[i]);
+				logbuff_putc (' ');
+			} else {
+				logbuff_puts (argv[i]);
+			}
+		}
+		return 0;
 	}
 
 	switch (argc) {
 
 	case 2:
 		if (strcmp(argv[1],"show") == 0) {
-			for (i=0; i<logged_chars; i++) {
-				s=log_buf+((log_start+i)&LOG_BUF_MASK);
-				putc(*s);
+			for (i=0; i < (log_size&LOGBUFF_MASK); i++) {
+				s = log_buf+((log_start+i)&LOGBUFF_MASK);
+				putc (*s);
 			}
 			return 0;
 		} else if (strcmp(argv[1],"reset") == 0) {
-			log_start=0;
-			logged_chars=0;
-			log_size=0;
+			log_start    = 0;
+			log_size     = 0;
+			logged_chars = 0;
 			return 0;
-		}
-		printf ("Usage:\n%s\n", cmdtp->usage);
-		return 1;
-
-	case 3:
-		if (strcmp(argv[1],"append") == 0) {
-			logbuff_puts(argv[2]);
+		} else if (strcmp(argv[1],"info") == 0) {
+			printf ("Logbuffer   at  %08lx\n", (unsigned long)log_buf);
+			printf ("log_start    =  %08lx\n", log_start);
+			printf ("log_size     =  %08lx\n", log_size);
+			printf ("logged_chars =  %08lx\n", logged_chars);
 			return 0;
-
 		}
 		printf ("Usage:\n%s\n", cmdtp->usage);
 		return 1;
@@ -177,8 +203,8 @@ static int logbuff_printk(const char *line)
 	int line_feed;
 	static signed char msg_level = -1;
 
-	strcpy(buf + 3, line);
-	i = strlen(line);
+	strcpy (buf + 3, line);
+	i = strlen (line);
 	buf_end = buf + 3 + i;
 	for (p = buf + 3; p < buf_end; p++) {
 		msg = p;
@@ -199,8 +225,8 @@ static int logbuff_printk(const char *line)
 		}
 		line_feed = 0;
 		for (; p < buf_end; p++) {
-			log_buf[(log_start+log_size) & LOG_BUF_MASK] = *p;
-			if (log_size < LOG_BUF_LEN)
+			log_buf[(log_start+log_size) & LOGBUFF_MASK] = *p;
+			if (log_size < LOGBUFF_LEN)
 				log_size++;
 			else
 				log_start++;

common/soft_i2c.c

@@ -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);

include/asm-ppc/global_data.h

@@ -68,6 +68,9 @@ typedef	struct	global_data {
 #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
 	unsigned long	fb_base;	/* Base address of framebuffer memory	*/
 #endif
+#ifdef CONFIG_POST
+	unsigned long	post_log_word;  /* Record POST activities */
+#endif
 #ifdef CONFIG_BOARD_TYPES
 	unsigned long	board_type;
 #endif

include/cmd_log.h

@@ -33,8 +33,9 @@
 #define LOG_BU_MASK ~(LOG_BUF_LEN-1)
 
 #define	CMD_TBL_LOG	MK_CMD_TBL_ENTRY(			\
-	"log",	3,	3,	1,	do_log,			\
+	"log",	3,     255,	1,	do_log,			\
 	"log     - manipulate logbuffer\n",                     \
+	"log info   - show pointer details\n"			\
 	"log reset  - clear contents\n"				\
 	"log show   - show contents\n"				\
 	"log append <msg> - append <msg> to the logbuffer\n"	\

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
 
 /*-----------------------------------------------------------------------

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) */

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 }
 

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
 
-
 /*-----------------------------------------------------------------------
  *
  *-----------------------------------------------------------------------

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 */

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	*/

include/configs/lwmon.h

@@ -31,11 +31,6 @@
 /* External logbuffer support */
 #define CONFIG_LOGBUFFER
 
-/* Reserve space for the logbuffer */
-#ifdef CONFIG_LOGBUFFER
-#define CONFIG_PRAM 20
-#endif
-
 /*
  * High Level Configuration Options
  * (easy to change)
@@ -293,6 +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
  */

include/logbuff.h

@@ -25,9 +25,15 @@
 
 #ifdef CONFIG_LOGBUFFER
 
-#define LOGBUFF_TEST0	0x01
+#define LOGBUFF_LEN	(16384)	/* Must be 16k right now */
+#define LOGBUFF_MASK	(LOGBUFF_LEN-1)
+#define LOGBUFF_OVERHEAD (4096) /* Logbuffer overhead for extra info */
+#define LOGBUFF_RESERVE (LOGBUFF_LEN+LOGBUFF_OVERHEAD)
+
+#define LOGBUFF_INITIALIZED	(1<<31)
 
 int drv_logbuff_init (void);
+void logbuff_init_ptrs (void);
 void logbuff_log(char *msg);
 void logbuff_reset (void);
 

include/post.h

@@ -38,6 +38,7 @@
 #define POST_RAM		0x0200	/* test runs in RAM */
 #define POST_MANUAL		0x0400	/* test runs on diag command */
 #define POST_REBOOT		0x0800	/* test may cause rebooting */
+#define POST_PREREL             0x1000  /* test runs before relocation */
 
 #define POST_MEM		(POST_RAM | POST_ROM)
 #define POST_ALWAYS		(POST_POWERNORMAL | \
@@ -53,10 +54,12 @@ struct post_test {
 	char *desc;
 	int flags;
 	int (*test) (int flags);
+	unsigned long testid;
 };
 void post_bootmode_init (void);
 int post_bootmode_get (unsigned int * last_test);
 void post_bootmode_clear (void);
+void post_output_backlog ( void );
 int post_run (char *name, int flags);
 int post_info (char *name);
 int post_log (char *format, ...);

include/version.h

@@ -24,6 +24,6 @@
 #ifndef	__VERSION_H__
 #define	__VERSION_H__
 
-#define	U_BOOT_VERSION	"U-Boot 0.1.1"
+#define	U_BOOT_VERSION	"U-Boot 0.2.0"
 
 #endif	/* __VERSION_H__ */

lib_ppc/board.c

@@ -362,6 +362,7 @@ void board_init_f (ulong bootflag)
 	 * relocate the code and continue running from DRAM.
 	 *
 	 * Reserve memory at end of RAM for (top down in that order):
+         *  - kernel log buffer
 	 *  - protected RAM
 	 *  - LCD framebuffer
 	 *  - monitor code
@@ -386,6 +387,14 @@ void board_init_f (ulong bootflag)
 	       (gd->ram_size > 256 << 20) ? 256 << 20 : gd->ram_size;
 #endif
 
+#ifdef CONFIG_LOGBUFFER
+	/* reserve kernel log buffer */
+	addr -= (LOGBUFF_RESERVE);
+# ifdef DEBUG
+	printf ("Reserving %ldk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
+# endif
+#endif
+
 #ifdef CONFIG_PRAM
 	/*
 	 * reserve protected RAM
@@ -613,9 +622,10 @@ void board_init_r (gd_t *id, ulong dest_addr)
 	WATCHDOG_RESET ();
 
 #ifdef CONFIG_LOGBUFFER
-	logbuff_reset ();
+	logbuff_init_ptrs ();
 #endif
 #ifdef CONFIG_POST
+	post_output_backlog ();
 	post_reloc ();
 #endif
 
@@ -929,21 +939,29 @@ void board_init_r (gd_t *id, ulong dest_addr)
 	bedbug_init ();
 #endif
 
-#ifdef CONFIG_PRAM
+#if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
 	/*
 	 * Export available size of memory for Linux,
 	 * taking into account the protected RAM at top of memory
 	 */
 	{
 		ulong pram;
-		char *s;
 		uchar memsz[32];
+#ifdef CONFIG_PRAM
+		char *s;
 
 		if ((s = getenv ("pram")) != NULL) {
 			pram = simple_strtoul (s, NULL, 10);
 		} else {
 			pram = CONFIG_PRAM;
 		}
+#else
+		pram=0;
+#endif
+#ifdef CONFIG_LOGBUFFER
+		/* Also take the logbuffer into account (pram is in kB) */
+		pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
+#endif
 		sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
 		setenv ("mem", memsz);
 	}

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 */

post/post.c

@@ -38,6 +38,7 @@
 
 void post_bootmode_init (void)
 {
+	DECLARE_GLOBAL_DATA_PTR;
 	int bootmode = post_bootmode_get (0);
 
 	if (bootmode == 0) {
@@ -49,6 +50,8 @@ void post_bootmode_init (void)
 	}
 
 	post_word_store (BOOTMODE_MAGIC | bootmode);
+	/* Reset activity record */
+	gd->post_log_word = 0;
 }
 
 int post_bootmode_get (unsigned int *last_test)
@@ -74,6 +77,36 @@ void post_bootmode_clear (void)
 	post_word_store (0);
 }
 
+/* POST tests run before relocation only mark status bits .... */
+static void post_log_mark_start ( unsigned long testid )
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	gd->post_log_word |= (testid)<<16;
+}
+
+static void post_log_mark_succ ( unsigned long testid )
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	gd->post_log_word |= testid;
+}
+
+/* ... and the messages are output once we are relocated */
+void post_output_backlog ( void )
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	int j;
+
+	for (j = 0; j < post_list_size; j++) {
+		if (gd->post_log_word & (post_list[j].testid<<16)) {
+			post_log ("POST %s ", post_list[j].cmd);
+			if (gd->post_log_word & post_list[j].testid)
+				post_log ("PASSED\n");
+			else
+				post_log ("FAILED\n");
+		}
+	}
+}
+
 static void post_bootmode_test_on (unsigned int last_test)
 {
 	unsigned long word = post_word_load ();
@@ -160,13 +193,21 @@ static int post_run_single (struct post_test *test,
 				post_bootmode_test_on (i);
 			}
 
+			if (test_flags & POST_PREREL)
+				post_log_mark_start ( test->testid );
+			else
 			post_log ("POST %s ", test->cmd);
 		}
 
+		if (test_flags & POST_PREREL) {
+			if ((*test->test) (flags) == 0)
+				post_log_mark_succ ( test->testid );
+		} else {
 		if ((*test->test) (flags) != 0)
 			post_log ("FAILED\n");
 		else
 			post_log ("PASSED\n");
+		}
 
 		if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL)) {
 			post_bootmode_test_off ();
@@ -282,6 +323,7 @@ int post_log (char *format, ...)
 	va_end (args);
 
 #ifdef CONFIG_LOGBUFFER
+	/* Send to the logbuffer */
 	logbuff_log (printbuffer);
 #else
 	/* Send to the stdout file */

post/tests.c

@@ -19,6 +19,10 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
+ *
+ * Be sure to mark tests to be run before relocation as such with the
+ * CFG_POST_PREREL flag so that logging is done correctly if the
+ * logbuffer support is enabled.
  */
 
 #include <common.h>
@@ -47,7 +51,8 @@ struct post_test post_list[] =
         "cache",
         "This test verifies the CPU cache operation.",
         POST_RAM | POST_ALWAYS,
-        &cache_post_test
+        &cache_post_test,
+	CFG_POST_CACHE
     },
 #endif
 #if CONFIG_POST & CFG_POST_WATCHDOG
@@ -56,7 +61,8 @@ struct post_test post_list[] =
         "watchdog",
         "This test checks the watchdog timer.",
         POST_RAM | POST_POWERON | POST_POWERFAIL | POST_MANUAL | POST_REBOOT,
-        &watchdog_post_test
+        &watchdog_post_test,
+	CFG_POST_WATCHDOG
     },
 #endif
 #if CONFIG_POST & CFG_POST_I2C
@@ -65,7 +71,8 @@ struct post_test post_list[] =
         "i2c",
         "This test verifies the I2C operation.",
         POST_RAM | POST_ALWAYS,
-        &i2c_post_test
+        &i2c_post_test,
+	CFG_POST_I2C
     },
 #endif
 #if CONFIG_POST & CFG_POST_RTC
@@ -74,7 +81,8 @@ struct post_test post_list[] =
         "rtc",
         "This test verifies the RTC operation.",
         POST_RAM | POST_POWERFAIL | POST_MANUAL,
-        &rtc_post_test
+        &rtc_post_test,
+	CFG_POST_RTC
     },
 #endif
 #if CONFIG_POST & CFG_POST_MEMORY
@@ -82,8 +90,9 @@ struct post_test post_list[] =
         "Memory test",
         "memory",
         "This test checks RAM.",
-        POST_ROM | POST_POWERON | POST_POWERFAIL,
-        &memory_post_test
+        POST_ROM | POST_POWERON | POST_POWERFAIL | POST_PREREL,
+        &memory_post_test,
+	CFG_POST_MEMORY
     },
 #endif
 #if CONFIG_POST & CFG_POST_CPU
@@ -93,7 +102,8 @@ struct post_test post_list[] =
         "This test verifies the arithmetic logic unit of"
         " CPU.",
         POST_RAM | POST_ALWAYS,
-        &cpu_post_test
+        &cpu_post_test,
+	CFG_POST_CPU
     },
 #endif
 #if CONFIG_POST & CFG_POST_UART
@@ -102,7 +112,8 @@ struct post_test post_list[] =
         "uart",
         "This test verifies the UART operation.",
         POST_RAM | POST_POWERFAIL | POST_MANUAL,
-        &uart_post_test
+        &uart_post_test,
+	CFG_POST_UART
     },
 #endif
 #if CONFIG_POST & CFG_POST_ETHER
@@ -111,7 +122,8 @@ struct post_test post_list[] =
         "ethernet",
         "This test verifies the ETHERNET operation.",
         POST_RAM | POST_ALWAYS | POST_MANUAL,
-        &ether_post_test
+        &ether_post_test,
+	CFG_POST_ETHER
     },
 #endif
 #if CONFIG_POST & CFG_POST_SPI
@@ -120,7 +132,8 @@ struct post_test post_list[] =
         "spi",
         "This test verifies the SPI operation.",
         POST_RAM | POST_ALWAYS | POST_MANUAL,
-        &spi_post_test
+        &spi_post_test,
+	CFG_POST_SPI
     },
 #endif
 #if CONFIG_POST & CFG_POST_USB
@@ -129,7 +142,8 @@ struct post_test post_list[] =
         "usb",
         "This test verifies the USB operation.",
         POST_RAM | POST_ALWAYS | POST_MANUAL,
-        &usb_post_test
+        &usb_post_test,
+	CFG_POST_USB
     },
 #endif
 #if CONFIG_POST & CFG_POST_SPR
@@ -137,8 +151,9 @@ struct post_test post_list[] =
         "SPR test",
         "spr",
         "This test checks SPR contents.",
-        POST_ROM | POST_ALWAYS,
-        &spr_post_test
+        POST_ROM | POST_ALWAYS | POST_PREREL,
+        &spr_post_test,
+	CFG_POST_SPR
     },
 #endif
 };

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
+
+#########################################################################
+

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.

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;
+}

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);

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);
+}