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env: Switch env_nand, env_mmc and env_ubi to env_import_redund
The env_nand, env_mmc and env_ubi implementations all implement redundancy using an identical serial-number scheme. This commit migrates them to use the implementation in env_common, which is functionally identical. Signed-off-by: Fiach Antaw <fiach.antaw@uqconnect.edu.au> Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Fiach Antaw
Tom Rini
parent
76768f5f08
commit
9d364af23e
3 changed files with 16 additions and 110 deletions
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@ -160,10 +160,6 @@ static inline int write_env(struct mmc *mmc, unsigned long size,
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return (n == blk_cnt) ? 0 : -1;
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}
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#ifdef CONFIG_ENV_OFFSET_REDUND
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static unsigned char env_flags;
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#endif
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int saveenv(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
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@ -184,8 +180,6 @@ int saveenv(void)
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goto fini;
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#ifdef CONFIG_ENV_OFFSET_REDUND
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env_new->flags = ++env_flags; /* increase the serial */
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if (gd->env_valid == 1)
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copy = 1;
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#endif
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@ -236,8 +230,6 @@ void env_relocate_spec(void)
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struct mmc *mmc;
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u32 offset1, offset2;
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int read1_fail = 0, read2_fail = 0;
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int crc1_ok = 0, crc2_ok = 0;
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env_t *ep;
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int ret;
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int dev = mmc_get_env_dev();
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const char *errmsg = NULL;
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@ -268,42 +260,20 @@ void env_relocate_spec(void)
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puts("*** Warning - some problems detected "
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"reading environment; recovered successfully\n");
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crc1_ok = !read1_fail &&
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(crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
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crc2_ok = !read2_fail &&
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(crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
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if (!crc1_ok && !crc2_ok) {
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if (read1_fail && read2_fail) {
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errmsg = "!bad CRC";
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ret = 1;
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goto fini;
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} else if (crc1_ok && !crc2_ok) {
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} else if (!read1_fail && read2_fail) {
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gd->env_valid = 1;
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} else if (!crc1_ok && crc2_ok) {
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env_import((char *)tmp_env1, 1);
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} else if (read1_fail && !read2_fail) {
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gd->env_valid = 2;
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env_import((char *)tmp_env2, 1);
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} else {
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/* both ok - check serial */
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if (tmp_env1->flags == 255 && tmp_env2->flags == 0)
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gd->env_valid = 2;
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else if (tmp_env2->flags == 255 && tmp_env1->flags == 0)
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gd->env_valid = 1;
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else if (tmp_env1->flags > tmp_env2->flags)
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gd->env_valid = 1;
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else if (tmp_env2->flags > tmp_env1->flags)
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gd->env_valid = 2;
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else /* flags are equal - almost impossible */
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gd->env_valid = 1;
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env_import_redund((char *)tmp_env1, (char *)tmp_env2);
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}
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free(env_ptr);
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if (gd->env_valid == 1)
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ep = tmp_env1;
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else
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ep = tmp_env2;
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env_flags = ep->flags;
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env_import((char *)ep, 0);
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ret = 0;
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fini:
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@ -184,10 +184,6 @@ static int erase_and_write_env(const struct env_location *location,
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return ret;
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}
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#ifdef CONFIG_ENV_OFFSET_REDUND
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static unsigned char env_flags;
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#endif
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int saveenv(void)
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{
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int ret = 0;
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@ -221,7 +217,6 @@ int saveenv(void)
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return ret;
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#ifdef CONFIG_ENV_OFFSET_REDUND
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env_new->flags = ++env_flags; /* increase the serial */
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env_idx = (gd->env_valid == 1);
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#endif
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@ -324,8 +319,7 @@ void env_relocate_spec(void)
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{
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#if !defined(ENV_IS_EMBEDDED)
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int read1_fail = 0, read2_fail = 0;
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int crc1_ok = 0, crc2_ok = 0;
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env_t *ep, *tmp_env1, *tmp_env2;
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env_t *tmp_env1, *tmp_env2;
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tmp_env1 = (env_t *)malloc(CONFIG_ENV_SIZE);
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tmp_env2 = (env_t *)malloc(CONFIG_ENV_SIZE);
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@ -344,42 +338,19 @@ void env_relocate_spec(void)
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puts("*** Warning - some problems detected "
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"reading environment; recovered successfully\n");
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crc1_ok = !read1_fail &&
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(crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
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crc2_ok = !read2_fail &&
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(crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
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if (!crc1_ok && !crc2_ok) {
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set_default_env("!bad CRC");
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if (read1_fail && read2_fail) {
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set_default_env("!bad env area");
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goto done;
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} else if (crc1_ok && !crc2_ok) {
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} else if (!read1_fail && read2_fail) {
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gd->env_valid = 1;
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} else if (!crc1_ok && crc2_ok) {
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env_import((char *)tmp_env1, 1);
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} else if (read1_fail && !read2_fail) {
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gd->env_valid = 2;
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env_import((char *)tmp_env2, 1);
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} else {
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/* both ok - check serial */
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if (tmp_env1->flags == 255 && tmp_env2->flags == 0)
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gd->env_valid = 2;
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else if (tmp_env2->flags == 255 && tmp_env1->flags == 0)
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gd->env_valid = 1;
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else if (tmp_env1->flags > tmp_env2->flags)
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gd->env_valid = 1;
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else if (tmp_env2->flags > tmp_env1->flags)
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gd->env_valid = 2;
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else /* flags are equal - almost impossible */
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gd->env_valid = 1;
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env_import_redund((char *)tmp_env1, (char *)tmp_env2);
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}
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free(env_ptr);
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if (gd->env_valid == 1)
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ep = tmp_env1;
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else
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ep = tmp_env2;
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env_flags = ep->flags;
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env_import((char *)ep, 0);
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done:
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free(tmp_env1);
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free(tmp_env2);
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@ -33,8 +33,6 @@ int env_init(void)
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#ifdef CONFIG_CMD_SAVEENV
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#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
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static unsigned char env_flags;
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int saveenv(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
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@ -50,8 +48,6 @@ int saveenv(void)
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return 1;
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}
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env_new->flags = ++env_flags; /* increase the serial */
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if (gd->env_valid == 1) {
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puts("Writing to redundant UBI... ");
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if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME_REDUND,
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@ -112,8 +108,7 @@ void env_relocate_spec(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf, CONFIG_ENV_SIZE);
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ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf, CONFIG_ENV_SIZE);
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int crc1_ok = 0, crc2_ok = 0;
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env_t *ep, *tmp_env1, *tmp_env2;
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env_t *tmp_env1, *tmp_env2;
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/*
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* In case we have restarted u-boot there is a chance that buffer
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@ -148,37 +143,7 @@ void env_relocate_spec(void)
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CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND);
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}
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crc1_ok = crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc;
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crc2_ok = crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc;
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if (!crc1_ok && !crc2_ok) {
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set_default_env("!bad CRC");
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return;
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} else if (crc1_ok && !crc2_ok) {
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gd->env_valid = 1;
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} else if (!crc1_ok && crc2_ok) {
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gd->env_valid = 2;
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} else {
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/* both ok - check serial */
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if (tmp_env1->flags == 255 && tmp_env2->flags == 0)
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gd->env_valid = 2;
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else if (tmp_env2->flags == 255 && tmp_env1->flags == 0)
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gd->env_valid = 1;
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else if (tmp_env1->flags > tmp_env2->flags)
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gd->env_valid = 1;
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else if (tmp_env2->flags > tmp_env1->flags)
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gd->env_valid = 2;
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else /* flags are equal - almost impossible */
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gd->env_valid = 1;
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}
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if (gd->env_valid == 1)
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ep = tmp_env1;
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else
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ep = tmp_env2;
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env_flags = ep->flags;
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env_import((char *)ep, 0);
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env_import_redund((char *)tmp_env1, (char *)tmp_env2);
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}
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#else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
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void env_relocate_spec(void)
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