Fix incorrect use of getenv() before relocation

A large number of boards incorrectly used getenv() in their board init
code running before relocation.  In some cases this caused U-Boot to
hang when certain environment variables grew too long.
Fix the code to use getenv_r().

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: The LEOX team <team@leox.org>
Cc: Michael Schwingen <michael@schwingen.org>
Cc: Georg Schardt <schardt@team-ctech.de>
Cc: Werner Pfister <Pfister_Werner@intercontrol.de>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: Peter De Schrijver <p2@mind.be>
Cc: John Zhan <zhanz@sinovee.com>
Cc: Rishi Bhattacharya <rishi@ti.com>
Cc: Peter Tyser <ptyser@xes-inc.com>

4 files changed, 31 insertions, 22 deletions

diff --git a/board/tqc/tqm8260/tqm8260.c b/board/tqc/tqm8260/tqm8260.c
index 95073b844..65a3174ec 100644
--- a/board/tqc/tqm8260/tqm8260.c
+++ b/board/tqc/tqm8260/tqm8260.c
@@ -195,17 +195,17 @@ const iop_conf_t iop_conf_tab[4][32] = {
  */
 int checkboard (void)
 {
-	char str[64];
-	int i = getenv_f("serial#", str, sizeof (str));
+	char buf[64];
+	int i = getenv_f("serial#", buf, sizeof(buf));
 
 	puts ("Board: ");
 
-	if (!i || strncmp (str, "TQM82", 5)) {
+	if (i < 0 || strncmp(buf, "TQM82", 5)) {
 		puts ("### No HW ID - assuming TQM8260\n");
 		return (0);
 	}
 
-	puts (str);
+	puts (buf);
 	putc ('\n');
 
 	return 0;
diff --git a/board/tqc/tqm8272/tqm8272.c b/board/tqc/tqm8272/tqm8272.c
index 96ec078fd..9efb54125 100644
--- a/board/tqc/tqm8272/tqm8272.c
+++ b/board/tqc/tqm8272/tqm8272.c
@@ -514,12 +514,16 @@ static inline int scanChar (char *p, int len, unsigned long *number)
 static int dump_hwib(void)
 {
 	HWIB_INFO	*hw = &hwinf;
+	char buf[64];
+	int i = getenv_f("serial#", buf, sizeof(buf));
 	volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
-	char *s = getenv("serial#");
+
+	if (i < 0)
+		buf[0] = '\0';
 
 	if (hw->OK) {
 		printf ("HWIB on %x\n", HWIB_INFO_START_ADDR);
-		printf ("serial : %s\n", s);
+		printf ("serial : %s\n", buf);
 		printf ("ethaddr: %s\n", hw->ethaddr);
 		printf ("FLASH	: %x nr:%d\n", hw->flash, hw->flash_nr);
 		printf ("RAM	: %x cs:%d\n", hw->ram, hw->ram_cs);
diff --git a/board/tqc/tqm85xx/tqm85xx.c b/board/tqc/tqm85xx/tqm85xx.c
index 99b13311c..8fb73abde 100644
--- a/board/tqc/tqm85xx/tqm85xx.c
+++ b/board/tqc/tqm85xx/tqm85xx.c
@@ -227,17 +227,19 @@ static const int casl_table[] = { 20, 25, 30 };
 
 int cas_latency (void)
 {
-	char *s = getenv ("serial#");
+	char buf[128];
 	int casl;
 	int val;
 	int i;
 
 	casl = CONFIG_DDR_DEFAULT_CL;
 
-	if (s != NULL) {
-		if (strncmp(s + strlen (s) - strlen (CASL_STRING1),
+	i = getenv_f("serial#", buf, sizeof(buf));
+
+	if (i >0) {
+		if (strncmp(buf + strlen (buf) - strlen (CASL_STRING1),
 			    CASL_STRING2, strlen (CASL_STRING2)) == 0) {
-			val = simple_strtoul (s + strlen (s) - 2, NULL, 10);
+			val = simple_strtoul (buf + strlen (buf) - 2, NULL, 10);
 
 			for (i = 0; i < N_CASL; ++i) {
 				if (val == casl_table[i]) {
@@ -252,12 +254,13 @@ int cas_latency (void)
 
 int checkboard (void)
 {
-	char *s = getenv ("serial#");
+	char buf[64];
+	int i = getenv_f("serial#", buf, sizeof(buf));
 
 	printf ("Board: %s", CONFIG_BOARDNAME);
-	if (s != NULL) {
-		puts (", serial# ");
-		puts (s);
+	if (i > 0) {
+		puts(", serial# ");
+		puts(buf);
 	}
 	putc ('\n');
 
diff --git a/board/tqc/tqm8xx/tqm8xx.c b/board/tqc/tqm8xx/tqm8xx.c
index 6576e0288..1fda53b9a 100644
--- a/board/tqc/tqm8xx/tqm8xx.c
+++ b/board/tqc/tqm8xx/tqm8xx.c
@@ -106,31 +106,33 @@ const uint sdram_table[] =
 
 int checkboard (void)
 {
-	char *s = getenv ("serial#");
+	char buf[64];
+	int i;
+	int l = getenv_f("serial#", buf, sizeof(buf));
 
 	puts ("Board: ");
 
-	if (!s || strncmp (s, "TQM8", 4)) {
+	if (l < 0 || strncmp(buf, "TQM8", 4)) {
 		puts ("### No HW ID - assuming TQM8xxL\n");
 		return (0);
 	}
 
-	if ((*(s + 6) == 'L')) {	/* a TQM8xxL type */
+	if ((buf[6] == 'L')) {	/* a TQM8xxL type */
 		gd->board_type = 'L';
 	}
 
-	if ((*(s + 6) == 'M')) {	/* a TQM8xxM type */
+	if ((buf[6] == 'M')) {	/* a TQM8xxM type */
 		gd->board_type = 'M';
 	}
 
-	if ((*(s + 6) == 'D')) {	/* a TQM885D type */
+	if ((buf[6] == 'D')) {	/* a TQM885D type */
 		gd->board_type = 'D';
 	}
 
-	for (; *s; ++s) {
-		if (*s == ' ')
+	for (i = 0; i < l; ++i) {
+		if (buf[i] == ' ')
 			break;
-		putc (*s);
+		putc (buf[i]);
 	}
 #ifdef CONFIG_VIRTLAB2
 	puts (" (Virtlab2)");