/*
+ * (C) Copyright 2008
+ * Stuart Wood, Lab X Technologies <stuart.wood@labxtechnologies.com>
+ *
* (C) Copyright 2004
* Jian Zhang, Texas Instruments, jzhang@ti.com.
- * (C) Copyright 2000-2004
+ * (C) Copyright 2000-2006
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
#include <malloc.h>
#include <nand.h>
-#if ((CONFIG_COMMANDS&(CFG_CMD_ENV|CFG_CMD_NAND)) == (CFG_CMD_ENV|CFG_CMD_NAND))
+#if defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)
#define CMD_SAVEENV
#elif defined(CFG_ENV_OFFSET_REDUND)
-#error Cannot use CFG_ENV_OFFSET_REDUND without CFG_CMD_ENV & CFG_CMD_NAND
+#error Cannot use CFG_ENV_OFFSET_REDUND without CONFIG_CMD_ENV & CONFIG_CMD_NAND
#endif
#if defined(CFG_ENV_SIZE_REDUND) && (CFG_ENV_SIZE_REDUND != CFG_ENV_SIZE)
#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/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;
/* local functions */
+#if !defined(ENV_IS_EMBEDDED)
static void use_default(void);
+#endif
DECLARE_GLOBAL_DATA_PTR;
* Mark it OK for now. env_relocate() in env_common.c
* will call our relocate function which will 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
+ * the SPL loads not only the U-Boot image from NAND but also the
+ * environment.
*/
int env_init(void)
{
+#if defined(ENV_IS_EMBEDDED)
+ size_t total;
+ int crc1_ok = 0, crc2_ok = 0;
+ env_t *tmp_env1, *tmp_env2;
+
+ total = CFG_ENV_SIZE;
+
+ tmp_env1 = env_ptr;
+ tmp_env2 = (env_t *)((ulong)env_ptr + CFG_ENV_SIZE);
+
+ 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)
+ gd->env_valid = 0;
+ else if(crc1_ok && !crc2_ok)
+ gd->env_valid = 1;
+ else if(!crc1_ok && crc2_ok)
+ gd->env_valid = 2;
+ else {
+ /* both ok - check serial */
+ if(tmp_env1->flags == 255 && tmp_env2->flags == 0)
+ gd->env_valid = 2;
+ else if(tmp_env2->flags == 255 && tmp_env1->flags == 0)
+ gd->env_valid = 1;
+ else if(tmp_env1->flags > tmp_env2->flags)
+ gd->env_valid = 1;
+ else if(tmp_env2->flags > tmp_env1->flags)
+ gd->env_valid = 2;
+ else /* flags are equal - almost impossible */
+ gd->env_valid = 1;
+ }
+
+ if (gd->env_valid == 1)
+ env_ptr = tmp_env1;
+ else if (gd->env_valid == 2)
+ env_ptr = tmp_env2;
+#else /* ENV_IS_EMBEDDED */
gd->env_addr = (ulong)&default_environment[0];
gd->env_valid = 1;
+#endif /* ENV_IS_EMBEDDED */
return (0);
}
* 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)
{
- ulong total;
+ 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);
#else /* ! CFG_ENV_OFFSET_REDUND */
int saveenv(void)
{
- ulong total;
+ size_t total;
int ret = 0;
+ nand_erase_options_t nand_erase_options;
- puts ("Erasing Nand...");
- if (nand_erase(&nand_info[0], CFG_ENV_OFFSET, 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;
+ nand_erase_options.offset = CFG_ENV_OFFSET;
+
+ 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, env_ptr)) {
+ puts("FAILED!\n");
return 1;
+ }
puts ("done\n");
return ret;
#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)
{
#if !defined(ENV_IS_EMBEDDED)
- ulong total;
+ size_t total;
int crc1_ok = 0, crc2_ok = 0;
env_t *tmp_env1, *tmp_env2;
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);
void env_relocate_spec (void)
{
#if !defined(ENV_IS_EMBEDDED)
- ulong total;
+ size_t total;
int ret;
total = CFG_ENV_SIZE;
- ret = nand_read(&nand_info[0], CFG_ENV_OFFSET, &total, (u_char*)env_ptr);
- if (ret || total != CFG_ENV_SIZE)
+ ret = readenv(CFG_ENV_OFFSET, env_ptr);
+ if (ret || total != CFG_ENV_SIZE)
return use_default();
if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc)
}
#endif /* CFG_ENV_OFFSET_REDUND */
+#if !defined(ENV_IS_EMBEDDED)
static void use_default()
{
puts ("*** Warning - bad CRC or NAND, using default environment\n\n");
gd->env_valid = 1;
}
+#endif
#endif /* CFG_ENV_IS_IN_NAND */
projects / u-boot / blobdiff