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-rw-r--r--common/env_nand.c141
1 files changed, 103 insertions, 38 deletions
diff --git a/common/env_nand.c b/common/env_nand.c
index 70d05ad..104f085 100644
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -1,4 +1,7 @@
/*
+ * (C) Copyright 2008
+ * Stuart Wood, Lab X Technologies <stuart.wood@labxtechnologies.com>
+ *
* (C) Copyright 2004
* Jian Zhang, Texas Instruments, jzhang@ti.com.
@@ -53,13 +56,14 @@
#error CONFIG_INFERNO not supported yet
#endif
+#ifndef CFG_ENV_RANGE
+#define CFG_ENV_RANGE CFG_ENV_SIZE
+#endif
+
int nand_legacy_rw (struct nand_chip* nand, int cmd,
size_t start, size_t len,
size_t * retlen, u_char * buf);
-/* info for NAND chips, defined in drivers/mtd/nand/nand.c */
-extern nand_info_t nand_info[];
-
/* references to names in env_common.c */
extern uchar default_environment[];
extern int default_environment_size;
@@ -91,8 +95,8 @@ uchar env_get_char_spec (int index)
/* this is called before nand_init()
* so we can't read Nand to validate env data.
* Mark it OK for now. env_relocate() in env_common.c
- * will call our relocate function which will does
- * the real validation.
+ * will call our relocate function which does the real
+ * validation.
*
* When using a NAND boot image (like sequoia_nand), the environment
* can be embedded or attached to the U-Boot image in NAND flash. This way
@@ -151,35 +155,71 @@ int env_init(void)
* The legacy NAND code saved the environment in the first NAND device i.e.,
* nand_dev_desc + 0. This is also the behaviour using the new NAND code.
*/
+int writeenv(size_t offset, u_char *buf)
+{
+ size_t end = offset + CFG_ENV_RANGE;
+ size_t amount_saved = 0;
+ size_t blocksize;
+
+ u_char *char_ptr;
+
+ blocksize = nand_info[0].erasesize;
+
+ while (amount_saved < CFG_ENV_SIZE && offset < end) {
+ if (nand_block_isbad(&nand_info[0], offset)) {
+ offset += blocksize;
+ } else {
+ char_ptr = &buf[amount_saved];
+ if (nand_write(&nand_info[0], offset, &blocksize,
+ char_ptr))
+ return 1;
+ offset += blocksize;
+ amount_saved += blocksize;
+ }
+ }
+ if (amount_saved != CFG_ENV_SIZE)
+ return 1;
+
+ return 0;
+}
#ifdef CFG_ENV_OFFSET_REDUND
int saveenv(void)
{
size_t total;
int ret = 0;
+ nand_erase_options_t nand_erase_options;
env_ptr->flags++;
total = CFG_ENV_SIZE;
+ nand_erase_options.length = CFG_ENV_RANGE;
+ nand_erase_options.quiet = 0;
+ nand_erase_options.jffs2 = 0;
+ nand_erase_options.scrub = 0;
+
+ if (CFG_ENV_RANGE < CFG_ENV_SIZE)
+ return 1;
if(gd->env_valid == 1) {
- puts ("Erasing redundant Nand...");
- if (nand_erase(&nand_info[0],
- CFG_ENV_OFFSET_REDUND, CFG_ENV_SIZE))
+ puts ("Erasing redundant Nand...\n");
+ nand_erase_options.offset = CFG_ENV_OFFSET_REDUND;
+ if (nand_erase_opts(&nand_info[0], &nand_erase_options))
return 1;
+
puts ("Writing to redundant Nand... ");
- ret = nand_write(&nand_info[0], CFG_ENV_OFFSET_REDUND, &total,
- (u_char*) env_ptr);
+ ret = writeenv(CFG_ENV_OFFSET_REDUND, (u_char *) env_ptr);
} else {
- puts ("Erasing Nand...");
- if (nand_erase(&nand_info[0],
- CFG_ENV_OFFSET, CFG_ENV_SIZE))
+ puts ("Erasing Nand...\n");
+ nand_erase_options.offset = CFG_ENV_OFFSET;
+ if (nand_erase_opts(&nand_info[0], &nand_erase_options))
return 1;
puts ("Writing to Nand... ");
- ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total,
- (u_char*) env_ptr);
+ ret = writeenv(CFG_ENV_OFFSET, (u_char *) env_ptr);
}
- if (ret || total != CFG_ENV_SIZE)
+ if (ret) {
+ puts("FAILED!\n");
return 1;
+ }
puts ("done\n");
gd->env_valid = (gd->env_valid == 2 ? 1 : 2);
@@ -190,16 +230,26 @@ int saveenv(void)
{
size_t total;
int ret = 0;
+ nand_erase_options_t nand_erase_options;
+
+ nand_erase_options.length = CFG_ENV_RANGE;
+ nand_erase_options.quiet = 0;
+ nand_erase_options.jffs2 = 0;
+ nand_erase_options.scrub = 0;
+ nand_erase_options.offset = CFG_ENV_OFFSET;
- puts ("Erasing Nand...");
- if (nand_erase(&nand_info[0], CFG_ENV_OFFSET, CFG_ENV_SIZE))
+ if (CFG_ENV_RANGE < CFG_ENV_SIZE)
+ return 1;
+ puts ("Erasing Nand...\n");
+ if (nand_erase_opts(&nand_info[0], &nand_erase_options))
return 1;
puts ("Writing to Nand... ");
total = CFG_ENV_SIZE;
- ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total, (u_char*)env_ptr);
- if (ret || total != CFG_ENV_SIZE)
+ if (writeenv(CFG_ENV_OFFSET, (u_char *) env_ptr)) {
+ puts("FAILED!\n");
return 1;
+ }
puts ("done\n");
return ret;
@@ -207,6 +257,33 @@ int saveenv(void)
#endif /* CFG_ENV_OFFSET_REDUND */
#endif /* CMD_SAVEENV */
+int readenv (size_t offset, u_char * buf)
+{
+ size_t end = offset + CFG_ENV_RANGE;
+ size_t amount_loaded = 0;
+ size_t blocksize;
+
+ u_char *char_ptr;
+
+ blocksize = nand_info[0].erasesize;
+
+ while (amount_loaded < CFG_ENV_SIZE && offset < end) {
+ if (nand_block_isbad(&nand_info[0], offset)) {
+ offset += blocksize;
+ } else {
+ char_ptr = &buf[amount_loaded];
+ if (nand_read(&nand_info[0], offset, &blocksize, char_ptr))
+ return 1;
+ offset += blocksize;
+ amount_loaded += blocksize;
+ }
+ }
+ if (amount_loaded != CFG_ENV_SIZE)
+ return 1;
+
+ return 0;
+}
+
#ifdef CFG_ENV_OFFSET_REDUND
void env_relocate_spec (void)
{
@@ -220,10 +297,10 @@ void env_relocate_spec (void)
tmp_env1 = (env_t *) malloc(CFG_ENV_SIZE);
tmp_env2 = (env_t *) malloc(CFG_ENV_SIZE);
- nand_read(&nand_info[0], CFG_ENV_OFFSET, &total,
- (u_char*) tmp_env1);
- nand_read(&nand_info[0], CFG_ENV_OFFSET_REDUND, &total,
- (u_char*) tmp_env2);
+ if (readenv(CFG_ENV_OFFSET, (u_char *) tmp_env1))
+ puts("No Valid Environment Area Found\n");
+ if (readenv(CFG_ENV_OFFSET_REDUND, (u_char *) tmp_env2))
+ puts("No Valid Reundant 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);
@@ -272,7 +349,7 @@ void env_relocate_spec (void)
int ret;
total = CFG_ENV_SIZE;
- ret = nand_read(&nand_info[0], CFG_ENV_OFFSET, &total, (u_char*)env_ptr);
+ ret = readenv(CFG_ENV_OFFSET, (u_char *) env_ptr);
if (ret || total != CFG_ENV_SIZE)
return use_default();
@@ -286,19 +363,7 @@ void env_relocate_spec (void)
static void use_default()
{
puts ("*** Warning - bad CRC or NAND, using default environment\n\n");
-
- if (default_environment_size > CFG_ENV_SIZE){
- puts ("*** Error - default environment is too large\n\n");
- return;
- }
-
- memset (env_ptr, 0, sizeof(env_t));
- memcpy (env_ptr->data,
- default_environment,
- default_environment_size);
- env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE);
- gd->env_valid = 1;
-
+ set_default_env();
}
#endif
generated by cgit v1.1 at 2024-11-22 05:52:12 +0000