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Diffstat (limited to 'common/env_nand.c')
-rw-r--r--common/env_nand.c99
1 files changed, 46 insertions, 53 deletions
diff --git a/common/env_nand.c b/common/env_nand.c
index 65a867d..ce13def 100644
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -44,10 +44,11 @@
#if defined(CONFIG_CMD_SAVEENV) && defined(CONFIG_CMD_NAND)
#define CMD_SAVEENV
#elif defined(CONFIG_ENV_OFFSET_REDUND)
-#error Cannot use CONFIG_ENV_OFFSET_REDUND without CONFIG_CMD_SAVEENV & CONFIG_CMD_NAND
+#error CONFIG_ENV_OFFSET_REDUND must have CONFIG_CMD_SAVEENV & CONFIG_CMD_NAND
#endif
-#if defined(CONFIG_ENV_SIZE_REDUND) && (CONFIG_ENV_SIZE_REDUND != CONFIG_ENV_SIZE)
+#if defined(CONFIG_ENV_SIZE_REDUND) && \
+ (CONFIG_ENV_SIZE_REDUND != CONFIG_ENV_SIZE)
#error CONFIG_ENV_SIZE_REDUND should be the same as CONFIG_ENV_SIZE
#endif
@@ -57,20 +58,19 @@
char *env_name_spec = "NAND";
-
#if defined(ENV_IS_EMBEDDED)
env_t *env_ptr = &environment;
#elif defined(CONFIG_NAND_ENV_DST)
env_t *env_ptr = (env_t *)CONFIG_NAND_ENV_DST;
#else /* ! ENV_IS_EMBEDDED */
-env_t *env_ptr = 0;
+env_t *env_ptr;
#endif /* ENV_IS_EMBEDDED */
DECLARE_GLOBAL_DATA_PTR;
-uchar env_get_char_spec (int index)
+uchar env_get_char_spec(int index)
{
- return ( *((uchar *)(gd->env_addr + index)) );
+ return *((uchar *)(gd->env_addr + index));
}
/*
@@ -95,16 +95,14 @@ int env_init(void)
env_t *tmp_env2;
tmp_env2 = (env_t *)((ulong)env_ptr + CONFIG_ENV_SIZE);
- crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
+ crc2_ok = crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc;
#endif
-
tmp_env1 = env_ptr;
-
- crc1_ok = (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
+ crc1_ok = crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc;
if (!crc1_ok && !crc2_ok) {
- gd->env_addr = 0;
- gd->env_valid = 0;
+ gd->env_addr = 0;
+ gd->env_valid = 0;
return 0;
} else if (crc1_ok && !crc2_ok) {
@@ -115,13 +113,13 @@ int env_init(void)
gd->env_valid = 2;
} else {
/* both ok - check serial */
- if(tmp_env1->flags == 255 && tmp_env2->flags == 0)
+ if (tmp_env1->flags == 255 && tmp_env2->flags == 0)
gd->env_valid = 2;
- else if(tmp_env2->flags == 255 && tmp_env1->flags == 0)
+ else if (tmp_env2->flags == 255 && tmp_env1->flags == 0)
gd->env_valid = 1;
- else if(tmp_env1->flags > tmp_env2->flags)
+ else if (tmp_env1->flags > tmp_env2->flags)
gd->env_valid = 1;
- else if(tmp_env2->flags > tmp_env1->flags)
+ else if (tmp_env2->flags > tmp_env1->flags)
gd->env_valid = 2;
else /* flags are equal - almost impossible */
gd->env_valid = 1;
@@ -137,11 +135,11 @@ int env_init(void)
gd->env_addr = (ulong)env_ptr->data;
#else /* ENV_IS_EMBEDDED || CONFIG_NAND_ENV_DST */
- gd->env_addr = (ulong)&default_environment[0];
- gd->env_valid = 1;
+ gd->env_addr = (ulong)&default_environment[0];
+ gd->env_valid = 1;
#endif /* ENV_IS_EMBEDDED || CONFIG_NAND_ENV_DST */
- return (0);
+ return 0;
}
#ifdef CMD_SAVEENV
@@ -154,7 +152,6 @@ int writeenv(size_t offset, u_char *buf)
size_t end = offset + CONFIG_ENV_RANGE;
size_t amount_saved = 0;
size_t blocksize, len;
-
u_char *char_ptr;
blocksize = nand_info[0].erasesize;
@@ -165,9 +162,9 @@ int writeenv(size_t offset, u_char *buf)
offset += blocksize;
} else {
char_ptr = &buf[amount_saved];
- if (nand_write(&nand_info[0], offset, &len,
- char_ptr))
+ if (nand_write(&nand_info[0], offset, &len, char_ptr))
return 1;
+
offset += blocksize;
amount_saved += len;
}
@@ -201,18 +198,17 @@ int saveenv(void)
error("Cannot export environment: errno = %d\n", errno);
return 1;
}
- env_new.crc = crc32(0, env_new.data, ENV_SIZE);
- env_new.flags = ++env_flags; /* increase the serial */
+ env_new.crc = crc32(0, env_new.data, ENV_SIZE);
+ env_new.flags = ++env_flags; /* increase the serial */
- if(gd->env_valid == 1) {
+ if (gd->env_valid == 1) {
puts("Erasing redundant NAND...\n");
nand_erase_options.offset = CONFIG_ENV_OFFSET_REDUND;
if (nand_erase_opts(&nand_info[0], &nand_erase_options))
return 1;
puts("Writing to redundant NAND... ");
- ret = writeenv(CONFIG_ENV_OFFSET_REDUND,
- (u_char *)&env_new);
+ ret = writeenv(CONFIG_ENV_OFFSET_REDUND, (u_char *)&env_new);
} else {
puts("Erasing NAND...\n");
nand_erase_options.offset = CONFIG_ENV_OFFSET;
@@ -220,8 +216,7 @@ int saveenv(void)
return 1;
puts("Writing to NAND... ");
- ret = writeenv(CONFIG_ENV_OFFSET,
- (u_char *)&env_new);
+ ret = writeenv(CONFIG_ENV_OFFSET, (u_char *)&env_new);
}
if (ret) {
puts("FAILED!\n");
@@ -230,14 +225,14 @@ int saveenv(void)
puts("done\n");
- gd->env_valid = (gd->env_valid == 2 ? 1 : 2);
+ gd->env_valid = gd->env_valid == 2 ? 1 : 2;
return ret;
}
#else /* ! CONFIG_ENV_OFFSET_REDUND */
int saveenv(void)
{
- int ret = 0;
+ int ret = 0;
env_t env_new;
ssize_t len;
char *res;
@@ -256,7 +251,7 @@ int saveenv(void)
error("Cannot export environment: errno = %d\n", errno);
return 1;
}
- env_new.crc = crc32(0, env_new.data, ENV_SIZE);
+ env_new.crc = crc32(0, env_new.data, ENV_SIZE);
puts("Erasing Nand...\n");
if (nand_erase_opts(&nand_info[0], &nand_erase_options))
@@ -274,17 +269,17 @@ int saveenv(void)
#endif /* CONFIG_ENV_OFFSET_REDUND */
#endif /* CMD_SAVEENV */
-int readenv(size_t offset, u_char * buf)
+int readenv(size_t offset, u_char *buf)
{
size_t end = offset + CONFIG_ENV_RANGE;
size_t amount_loaded = 0;
size_t blocksize, len;
-
u_char *char_ptr;
blocksize = nand_info[0].erasesize;
if (!blocksize)
return 1;
+
len = min(blocksize, CONFIG_ENV_SIZE);
while (amount_loaded < CONFIG_ENV_SIZE && offset < end) {
@@ -292,12 +287,15 @@ int readenv(size_t offset, u_char * buf)
offset += blocksize;
} else {
char_ptr = &buf[amount_loaded];
- if (nand_read_skip_bad(&nand_info[0], offset, &len, char_ptr))
+ if (nand_read_skip_bad(&nand_info[0], offset,
+ &len, char_ptr))
return 1;
+
offset += blocksize;
amount_loaded += len;
}
}
+
if (amount_loaded != CONFIG_ENV_SIZE)
return 1;
@@ -308,14 +306,14 @@ int readenv(size_t offset, u_char * buf)
int get_nand_env_oob(nand_info_t *nand, unsigned long *result)
{
struct mtd_oob_ops ops;
- uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)];
+ uint32_t oob_buf[ENV_OFFSET_SIZE / sizeof(uint32_t)];
int ret;
- ops.datbuf = NULL;
- ops.mode = MTD_OOB_AUTO;
- ops.ooboffs = 0;
- ops.ooblen = ENV_OFFSET_SIZE;
- ops.oobbuf = (void *) oob_buf;
+ ops.datbuf = NULL;
+ ops.mode = MTD_OOB_AUTO;
+ ops.ooboffs = 0;
+ ops.ooblen = ENV_OFFSET_SIZE;
+ ops.oobbuf = (void *)oob_buf;
ret = nand->read_oob(nand, ENV_OFFSET_SIZE, &ops);
if (ret) {
@@ -345,13 +343,10 @@ void env_relocate_spec(void)
tmp_env1 = (env_t *)malloc(CONFIG_ENV_SIZE);
tmp_env2 = (env_t *)malloc(CONFIG_ENV_SIZE);
-
- if ((tmp_env1 == NULL) || (tmp_env2 == NULL)) {
+ if (tmp_env1 == NULL || tmp_env2 == NULL) {
puts("Can't allocate buffers for environment\n");
- free(tmp_env1);
- free(tmp_env2);
set_default_env("!malloc() failed");
- return;
+ goto done;
}
if (readenv(CONFIG_ENV_OFFSET, (u_char *) tmp_env1))
@@ -360,14 +355,12 @@ void env_relocate_spec(void)
if (readenv(CONFIG_ENV_OFFSET_REDUND, (u_char *) tmp_env2))
puts("No Valid Redundant Environment Area found\n");
- crc1_ok = (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
- crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
+ crc1_ok = crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc;
+ crc2_ok = crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc;
if (!crc1_ok && !crc2_ok) {
- free(tmp_env1);
- free(tmp_env2);
set_default_env("!bad CRC");
- return;
+ goto done;
} else if (crc1_ok && !crc2_ok) {
gd->env_valid = 1;
} else if (!crc1_ok && crc2_ok) {
@@ -384,7 +377,6 @@ void env_relocate_spec(void)
gd->env_valid = 2;
else /* flags are equal - almost impossible */
gd->env_valid = 1;
-
}
free(env_ptr);
@@ -397,6 +389,7 @@ void env_relocate_spec(void)
env_flags = ep->flags;
env_import((char *)ep, 0);
+done:
free(tmp_env1);
free(tmp_env2);
@@ -408,7 +401,7 @@ void env_relocate_spec(void)
* device i.e., nand_dev_desc + 0. This is also the behaviour using
* the new NAND code.
*/
-void env_relocate_spec (void)
+void env_relocate_spec(void)
{
#if !defined(ENV_IS_EMBEDDED)
int ret;
generated by cgit v1.1 at 2024-12-16 03:20:45 +0000