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common/env_ubi.c
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/* * (c) Copyright 2012 by National Instruments, * Joe Hershberger <joe.hershberger@ni.com> * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <command.h> #include <environment.h> #include <errno.h> #include <malloc.h> #include <search.h> #include <ubi_uboot.h> #undef crc32 char *env_name_spec = "UBI"; env_t *env_ptr; DECLARE_GLOBAL_DATA_PTR; int env_init(void) { /* use default */ gd->env_addr = (ulong)&default_environment[0]; gd->env_valid = 1; return 0; } #ifdef CONFIG_CMD_SAVEENV |
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#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT static unsigned char env_flags; int saveenv(void) { ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1); ssize_t len; char *res; res = (char *)&env_new->data; len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); if (len < 0) { error("Cannot export environment: errno = %d ", errno); return 1; } if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) { printf(" ** Cannot find mtd partition \"%s\" ", CONFIG_ENV_UBI_PART); return 1; } env_new->crc = crc32(0, env_new->data, ENV_SIZE); env_new->flags = ++env_flags; /* increase the serial */ if (gd->env_valid == 1) { puts("Writing to redundant UBI... "); if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME_REDUND, (void *)env_new, CONFIG_ENV_SIZE)) { printf(" ** Unable to write env to %s:%s ** ", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND); return 1; } } else { puts("Writing to UBI... "); if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME, (void *)env_new, CONFIG_ENV_SIZE)) { printf(" ** Unable to write env to %s:%s ** ", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME); return 1; } } puts("done "); gd->env_valid = gd->env_valid == 2 ? 1 : 2; return 0; } #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */ |
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int saveenv(void) { ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1); ssize_t len; char *res; res = (char *)&env_new->data; len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); if (len < 0) { error("Cannot export environment: errno = %d ", errno); return 1; } if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) { printf(" ** Cannot find mtd partition \"%s\" ", CONFIG_ENV_UBI_PART); return 1; } env_new->crc = crc32(0, env_new->data, ENV_SIZE); if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME, (void *)env_new, CONFIG_ENV_SIZE)) { printf(" ** Unable to write env to %s:%s ** ", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME); return 1; } puts("done "); return 0; } |
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#endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */ |
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#endif /* CONFIG_CMD_SAVEENV */ |
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#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT void env_relocate_spec(void) { ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf, CONFIG_ENV_SIZE); ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf, CONFIG_ENV_SIZE); int crc1_ok = 0, crc2_ok = 0; env_t *ep, *tmp_env1, *tmp_env2; tmp_env1 = (env_t *)env1_buf; tmp_env2 = (env_t *)env2_buf; if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) { printf(" ** Cannot find mtd partition \"%s\" ", CONFIG_ENV_UBI_PART); set_default_env(NULL); return; } if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)tmp_env1, CONFIG_ENV_SIZE)) { printf(" ** Unable to read env from %s:%s ** ", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME); } if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND, (void *)tmp_env2, CONFIG_ENV_SIZE)) { printf(" ** Unable to read redundant env from %s:%s ** ", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND); } 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) { set_default_env("!bad CRC"); return; } 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) ep = tmp_env1; else ep = tmp_env2; env_flags = ep->flags; env_import((char *)ep, 0); } #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */ |
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void env_relocate_spec(void) { ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) { printf(" ** Cannot find mtd partition \"%s\" ", CONFIG_ENV_UBI_PART); set_default_env(NULL); return; } if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)&buf, CONFIG_ENV_SIZE)) { printf(" ** Unable to read env from %s:%s ** ", CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME); set_default_env(NULL); return; } env_import(buf, 1); } |
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#endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */ |