Fix MAC address in default environment

2 files changed, 169 insertions, 99 deletions

diff --git a/recipes-bsp/multitech/u-boot-linux-utils/crc_erase.patch b/recipes-bsp/multitech/u-boot-linux-utils/crc_erase.patch
deleted file mode 100644
index 5d78703..0000000
--- a/recipes-bsp/multitech/u-boot-linux-utils/crc_erase.patch
+++ /dev/null
@@ -1,99 +0,0 @@
-# Print out the CRC's if debugging.
-# Prevent the erasure of the environment.
-# Allow the deliberate erasure of the environment with the
-# clearenv command. 
-diff --git a/src/u_boot.c b/src/u_boot.c
-index e240475..94f18ed 100644
---- a/src/u_boot.c
-+++ b/src/u_boot.c
-@@ -64,6 +64,8 @@ static int write_uboot_env(const char *device, struct environment *env)
- 		error("mtd_erase_all %s failed", device);
- 		return -1;
- 	}
-+	if(env == NULL)
-+		return 0;
- 
- 	fd = open(device, O_WRONLY);
- 	if (fd < 0) {
-@@ -213,7 +215,7 @@ static int cmd_setenv(struct environment *env, int argc, char **argv)
- 	}
- 
- 	env->crc = crc32(0, (uint8_t *) env->data, sizeof(env->data));
--	dbg("crc: 0x%08X", env->crc);
-+	dbg("Calculated crc: 0x%08X", env->crc);
- 	env->flags = 0;
- 
- 	tmp = write_uboot_env(MTD_ENV1, env);
-@@ -252,6 +254,7 @@ int main(int argc, char *argv[]) {
- 	struct environment *env2;
- 	uint32_t crc1_ok;
- 	uint32_t crc2_ok;
-+        uint32_t mycrc;
- 
- 	if (argc <= 1) {
- 		usage(stderr);
-@@ -301,12 +304,18 @@ int main(int argc, char *argv[]) {
- 		error("read_uboot_env failed");
- 		return 1;
- 	}
--	dbg("env1 crc: 0x%08X", env1->crc);
-+	dbg("env1 stored crc: 0x%08X", env1->crc);
- 	dbg("env1 flags: %d", env1->flags);
--	if (crc32(0, (uint8_t *) env1->data, sizeof(env1->data)) == env1->crc) {
-+	mycrc = crc32(0, (uint8_t *) env1->data, sizeof(env1->data));
-+	if (mycrc == env1->crc) {
- 		crc1_ok = 1;
- 	} else {
--		error("crc does not match on primary env");
-+                dbg("env1 stored crc 0x%x, calculated crc 0x%x",env1->crc,mycrc);
-+                if(env1->flags != 255)
-+			error("crc does not match on env1");
-+		else
-+                	dbg("uninitialized env1");
-+			
- 		crc1_ok = 0;
- 	}
- 
-@@ -315,20 +324,27 @@ int main(int argc, char *argv[]) {
- 		error("read_uboot_env failed");
- 		return 1;
- 	}
--	dbg("env2 crc: 0x%08X", env2->crc);
-+	dbg("env2 stored crc: 0x%08X", env2->crc);
- 	dbg("env2 flags: %d", env2->flags);
--	if (crc32(0, (uint8_t *) env2->data, sizeof(env2->data)) == env2->crc) {
-+	mycrc = crc32(0, (uint8_t *) env2->data, sizeof(env2->data));
-+	if (mycrc == env2->crc) {
- 		crc2_ok = 1;
- 	} else {
--		error("crc does not match on redundant env");
-+                dbg("env2 stored crc 0x%x, calculated crc 0x%x",env2->crc,mycrc);
-+                if(env2->flags != 255)
-+			error("crc does not match on env2");
-+		else
-+                	dbg("uninitialized env2");
- 		crc2_ok = 0;
- 	}
- 
--	if (!crc1_ok && !crc2_ok) {
--		error("both environments are bad: loading DEFAULT_ENV");
-+	if (!crc1_ok && !crc2_ok && env1->crc == 0xffffffff &&
-+	  (env1->flags == 0xff) && (env2->flags == 0xff) && (env2->crc == 0xffffffff)) {
-+		error("both environments are bad: not loading DEFAULT_ENV");
- 		env = env1;
- 		env->flags = 0;
- 		memcpy(env->data, DEFAULT_ENV, sizeof(DEFAULT_ENV));
-+                exit(1);
- 	} else if (crc1_ok && !crc2_ok) {
- 		env = env1;
- 	} else if (!crc1_ok && crc2_ok) {
-@@ -353,6 +369,9 @@ int main(int argc, char *argv[]) {
- 		err = cmd_printenv(env, argc, argv);
- 	} else if (!tokcmp(cmd, "setenv")) {
- 		err = cmd_setenv(env, argc, argv);
-+	} else if (!tokcmp(cmd, "clearenv")) {
-+		(void)write_uboot_env(MTD_ENV1, NULL);
-+		(void)write_uboot_env(MTD_ENV2, NULL);
- 	} else {
- 		usage(stderr);
- 		exit(1);
diff --git a/recipes-bsp/multitech/u-boot-linux-utils/uboot_mac.patch b/recipes-bsp/multitech/u-boot-linux-utils/uboot_mac.patch
new file mode 100644
index 0000000..5b92f35
--- /dev/null
+++ b/recipes-bsp/multitech/u-boot-linux-utils/uboot_mac.patch
@@ -0,0 +1,169 @@
+commit de3ea4470a6da4c01bfff9377649324747c1e3c9
+Author: John Klug <john.klug@multitech.com>
+Date:   Mon Apr 10 12:16:08 2017 -0500
+
+    Add MAC address in default environment and add clearenv functionality.
+
+diff --git a/src/u_boot.c b/src/u_boot.c
+index e240475..7eea5e9 100644
+--- a/src/u_boot.c
++++ b/src/u_boot.c
+@@ -36,6 +36,12 @@
+ 
+ #include "u_boot.h"
+ 
++
++#define DUMMY_MAC "00:00:00:00:00:00"
++#define MACNAME   "ethaddr"
++
++#define EMPTY_CRC 0xf9137807
++
+ static int tokcmp(const char *cmd, const char *pattern) {
+ 	int len = strlen(cmd);
+ 	if (len > strlen(pattern)) {
+@@ -64,6 +70,8 @@ static int write_uboot_env(const char *device, struct environment *env)
+ 		error("mtd_erase_all %s failed", device);
+ 		return -1;
+ 	}
++	if(env == NULL)
++		return 0;
+ 
+ 	fd = open(device, O_WRONLY);
+ 	if (fd < 0) {
+@@ -166,7 +174,7 @@ static int cmd_setenv(struct environment *env, int argc, char **argv)
+ 	var = env->data;
+ 	while (*var) {
+ 		if (!strncmp(var, name, name_len) && var[name_len] == '=') {
+-			dbg("found variable (%s) at %lld", var, (long long int) var);
++			dbg("found variable (%s) at %p", var, var);
+ 
+ 			cp = next_var(var);
+ 			while (*cp) {
+@@ -213,7 +221,7 @@ static int cmd_setenv(struct environment *env, int argc, char **argv)
+ 	}
+ 
+ 	env->crc = crc32(0, (uint8_t *) env->data, sizeof(env->data));
+-	dbg("crc: 0x%08X", env->crc);
++	dbg("Calculated crc (to be stored): 0x%08X", env->crc);
+ 	env->flags = 0;
+ 
+ 	tmp = write_uboot_env(MTD_ENV1, env);
+@@ -238,7 +246,7 @@ static void print_version(const char *name) {
+ }
+ 
+ static void usage(FILE *out) {
+-	fprintf(out, "Usage: u-boot { printenv [ name ] | setenv name [ value ] }\n");
++	fprintf(out, "Usage: u-boot { printenv [ name ] | setenv name [ value ] | clearenv }\n");
+ 	fprintf(out, "\n");
+ }
+ 
+@@ -252,6 +260,7 @@ int main(int argc, char *argv[]) {
+ 	struct environment *env2;
+ 	uint32_t crc1_ok;
+ 	uint32_t crc2_ok;
++	uint32_t crc1_calc, crc2_calc;
+ 
+ 	if (argc <= 1) {
+ 		usage(stderr);
+@@ -301,12 +310,18 @@ int main(int argc, char *argv[]) {
+ 		error("read_uboot_env failed");
+ 		return 1;
+ 	}
+-	dbg("env1 crc: 0x%08X", env1->crc);
++	dbg("env1 stored crc: 0x%08X", env1->crc);
+ 	dbg("env1 flags: %d", env1->flags);
+-	if (crc32(0, (uint8_t *) env1->data, sizeof(env1->data)) == env1->crc) {
++	crc1_calc = crc32(0, (uint8_t *) env1->data, sizeof(env1->data));
++	if (crc1_calc == env1->crc) {
+ 		crc1_ok = 1;
+ 	} else {
+-		error("crc does not match on primary env");
++                dbg("env1 stored crc 0x%x, calculated crc 0x%x",env1->crc,crc1_calc);
++                if ((env1->crc != 0xffffffff) || (crc1_calc != EMPTY_CRC))
++			error("crc does not match on env1");
++		else
++			dbg("uninitialized env1");
++
+ 		crc1_ok = 0;
+ 	}
+ 
+@@ -315,20 +330,64 @@ int main(int argc, char *argv[]) {
+ 		error("read_uboot_env failed");
+ 		return 1;
+ 	}
+-	dbg("env2 crc: 0x%08X", env2->crc);
++	dbg("env2 stored crc: 0x%08X", env2->crc);
+ 	dbg("env2 flags: %d", env2->flags);
+-	if (crc32(0, (uint8_t *) env2->data, sizeof(env2->data)) == env2->crc) {
++	crc2_calc = crc32(0, (uint8_t *) env2->data, sizeof(env2->data));
++	if (crc2_calc == env2->crc) {
+ 		crc2_ok = 1;
+ 	} else {
+-		error("crc does not match on redundant env");
++                dbg("env2 stored crc 0x%x, calculated crc 0x%x",env2->crc,crc2_calc);
++                if ((env2->crc != 0xffffffff) || (crc2_calc != EMPTY_CRC) )
++			error("crc does not match on env2");
++		else
++			dbg("uninitialized env2");
+ 		crc2_ok = 0;
+ 	}
+ 
+-	if (!crc1_ok && !crc2_ok) {
+-		error("both environments are bad: loading DEFAULT_ENV");
++	if (!crc1_ok && !crc2_ok && (env1->crc == 0xffffffff) &&
++	   (env2->crc == 0xffffffff) && (crc1_calc == EMPTY_CRC) &&
++		 (crc2_calc == EMPTY_CRC) ) {
++		int mp_fd = open(MAC_PATH, O_RDONLY);
++		int len,retval;
++		char *p;
++
++		fputs("WARNING: Flash is in initial state, so use defaults\n",stderr);
+ 		env = env1;
+ 		env->flags = 0;
+ 		memcpy(env->data, DEFAULT_ENV, sizeof(DEFAULT_ENV));
++		/* Now need to find the MAC address */
++		if (mp_fd == -1) {
++		  perror("Cannot open: " MAC_PATH);
++		  exit(1);
++                }
++
++		len = sizeof DUMMY_MAC - 1;  /* remove null from count */
++		p = malloc(len);
++		retval = read(mp_fd,p,len);
++                dbg("Mac read of %d returned %d",len,retval);
++		if(retval != len) {
++		  if(retval == -1) {
++			perror("Failed to read: " MAC_PATH);
++			exit(1);
++		  }
++		  if (retval != len) {
++			fprintf(stderr,"%s: Only read %d characters of %d for the MAC address\n",
++				MAC_PATH,retval,len);
++			fprintf(stderr,"%s: Read %*.*s\n",MAC_PATH,retval,retval,p);
++			exit(1);
++		  }
++                }
++		len = sizeof(DEFAULT_ENV);
++		memcpy(env->data + len - 1, MACNAME, sizeof MACNAME);
++		len += sizeof MACNAME - 1;
++		env->data[len-1] = '=';
++		memcpy(env->data + len, p, sizeof DUMMY_MAC - 1);
++		len += sizeof DUMMY_MAC;
++		env->data[len-1] = 0;
++		env->data[len] = 0;
++	} else if (!crc1_ok && !crc2_ok) {
++		error("both environments are bad: not loading DEFAULT_ENV");
++                exit(1);
+ 	} else if (crc1_ok && !crc2_ok) {
+ 		env = env1;
+ 	} else if (!crc1_ok && crc2_ok) {
+@@ -353,6 +412,9 @@ int main(int argc, char *argv[]) {
+ 		err = cmd_printenv(env, argc, argv);
+ 	} else if (!tokcmp(cmd, "setenv")) {
+ 		err = cmd_setenv(env, argc, argv);
++	} else if (!tokcmp(cmd, "clearenv")) {
++		(void)write_uboot_env(MTD_ENV1, NULL);
++		(void)write_uboot_env(MTD_ENV2, NULL);
+ 	} else {
+ 		usage(stderr);
+ 		exit(1);