X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=common%2Fenv_sf.c;h=e3e1897ccb95cf1501e353dc846a938b84dc4939;hb=1a4596601fd395f3afb8f82f3f840c5e00bdd57a;hp=d641a9a73cacf41e75085fb51f0c1f7b7799034d;hpb=794a5924972fc8073616e98a2668da4a5f9aea90;p=platform%2Fkernel%2Fu-boot.git diff --git a/common/env_sf.c b/common/env_sf.c index d641a9a..e3e1897 100644 --- a/common/env_sf.c +++ b/common/env_sf.c @@ -1,5 +1,5 @@ /* - * (C) Copyright 2000-2002 + * (C) Copyright 2000-2010 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH @@ -7,117 +7,323 @@ * * (C) Copyright 2008 Atmel Corporation * - * 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 + * SPDX-License-Identifier: GPL-2.0+ */ #include - -#ifdef CFG_ENV_IS_IN_SPI_FLASH - #include +#include #include +#include +#include -#ifndef CFG_ENV_SPI_BUS -# define CFG_ENV_SPI_BUS 0 +#ifndef CONFIG_ENV_SPI_BUS +# define CONFIG_ENV_SPI_BUS 0 #endif -#ifndef CFG_ENV_SPI_CS -# define CFG_ENV_SPI_CS 0 +#ifndef CONFIG_ENV_SPI_CS +# define CONFIG_ENV_SPI_CS 0 #endif -#ifndef CFG_ENV_SPI_MAX_HZ -# define CFG_ENV_SPI_MAX_HZ 1000000 +#ifndef CONFIG_ENV_SPI_MAX_HZ +# define CONFIG_ENV_SPI_MAX_HZ 1000000 #endif -#ifndef CFG_ENV_SPI_MODE -# define CFG_ENV_SPI_MODE SPI_MODE_3 +#ifndef CONFIG_ENV_SPI_MODE +# define CONFIG_ENV_SPI_MODE SPI_MODE_3 #endif -DECLARE_GLOBAL_DATA_PTR; +#ifdef CONFIG_ENV_OFFSET_REDUND +static ulong env_offset = CONFIG_ENV_OFFSET; +static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND; -/* references to names in env_common.c */ -extern uchar default_environment[]; -extern int default_environment_size; +#define ACTIVE_FLAG 1 +#define OBSOLETE_FLAG 0 +#endif /* CONFIG_ENV_OFFSET_REDUND */ -char * env_name_spec = "SPI Flash"; -env_t *env_ptr; +DECLARE_GLOBAL_DATA_PTR; -static struct spi_flash *env_flash; +char *env_name_spec = "SPI Flash"; -uchar env_get_char_spec(int index) -{ - return *((uchar *)(gd->env_addr + index)); -} +static struct spi_flash *env_flash; +#if defined(CONFIG_ENV_OFFSET_REDUND) int saveenv(void) { + env_t env_new; + ssize_t len; + char *res, *saved_buffer = NULL, flag = OBSOLETE_FLAG; + u32 saved_size, saved_offset, sector = 1; + int ret; + if (!env_flash) { - puts("Environment SPI flash not initialized\n"); + env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, + CONFIG_ENV_SPI_CS, + CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); + if (!env_flash) { + set_default_env("!spi_flash_probe() failed"); + return 1; + } + } + + 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\n", errno); return 1; } + env_new.crc = crc32(0, env_new.data, ENV_SIZE); + env_new.flags = ACTIVE_FLAG; + + if (gd->env_valid == 1) { + env_new_offset = CONFIG_ENV_OFFSET_REDUND; + env_offset = CONFIG_ENV_OFFSET; + } else { + env_new_offset = CONFIG_ENV_OFFSET; + env_offset = CONFIG_ENV_OFFSET_REDUND; + } + + /* Is the sector larger than the env (i.e. embedded) */ + if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { + saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE; + saved_offset = env_new_offset + CONFIG_ENV_SIZE; + saved_buffer = malloc(saved_size); + if (!saved_buffer) { + ret = 1; + goto done; + } + ret = spi_flash_read(env_flash, saved_offset, + saved_size, saved_buffer); + if (ret) + goto done; + } + + if (CONFIG_ENV_SIZE > CONFIG_ENV_SECT_SIZE) { + sector = CONFIG_ENV_SIZE / CONFIG_ENV_SECT_SIZE; + if (CONFIG_ENV_SIZE % CONFIG_ENV_SECT_SIZE) + sector++; + } puts("Erasing SPI flash..."); - if (spi_flash_erase(env_flash, CFG_ENV_OFFSET, CFG_ENV_SIZE)) - return 1; + ret = spi_flash_erase(env_flash, env_new_offset, + sector * CONFIG_ENV_SECT_SIZE); + if (ret) + goto done; puts("Writing to SPI flash..."); - if (spi_flash_write(env_flash, CFG_ENV_OFFSET, CFG_ENV_SIZE, env_ptr)) - return 1; + + ret = spi_flash_write(env_flash, env_new_offset, + CONFIG_ENV_SIZE, &env_new); + if (ret) + goto done; + + if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { + ret = spi_flash_write(env_flash, saved_offset, + saved_size, saved_buffer); + if (ret) + goto done; + } + + ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags), + sizeof(env_new.flags), &flag); + if (ret) + goto done; puts("done\n"); - return 0; + + gd->env_valid = gd->env_valid == 2 ? 1 : 2; + + printf("Valid environment: %d\n", (int)gd->env_valid); + + done: + if (saved_buffer) + free(saved_buffer); + + return ret; } void env_relocate_spec(void) { int ret; + int crc1_ok = 0, crc2_ok = 0; + env_t *tmp_env1 = NULL; + env_t *tmp_env2 = NULL; + env_t *ep = NULL; - env_flash = spi_flash_probe(CFG_ENV_SPI_BUS, CFG_ENV_SPI_CS, - CFG_ENV_SPI_MAX_HZ, CFG_ENV_SPI_MODE); - if (!env_flash) - goto err_probe; + tmp_env1 = (env_t *)malloc(CONFIG_ENV_SIZE); + tmp_env2 = (env_t *)malloc(CONFIG_ENV_SIZE); - ret = spi_flash_read(env_flash, CFG_ENV_OFFSET, CFG_ENV_SIZE, env_ptr); - if (ret) + if (!tmp_env1 || !tmp_env2) { + set_default_env("!malloc() failed"); + goto out; + } + + env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, + CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); + if (!env_flash) { + set_default_env("!spi_flash_probe() failed"); + goto out; + } + + ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET, + CONFIG_ENV_SIZE, tmp_env1); + if (ret) { + set_default_env("!spi_flash_read() failed"); goto err_read; + } - if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc) - goto err_crc; + if (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc) + crc1_ok = 1; - gd->env_valid = 1; + ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET_REDUND, + CONFIG_ENV_SIZE, tmp_env2); + if (!ret) { + if (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc) + crc2_ok = 1; + } - return; + if (!crc1_ok && !crc2_ok) { + set_default_env("!bad CRC"); + goto err_read; + } else if (crc1_ok && !crc2_ok) { + gd->env_valid = 1; + } else if (!crc1_ok && crc2_ok) { + gd->env_valid = 2; + } else if (tmp_env1->flags == ACTIVE_FLAG && + tmp_env2->flags == OBSOLETE_FLAG) { + gd->env_valid = 1; + } else if (tmp_env1->flags == OBSOLETE_FLAG && + tmp_env2->flags == ACTIVE_FLAG) { + gd->env_valid = 2; + } else if (tmp_env1->flags == tmp_env2->flags) { + gd->env_valid = 2; + } else if (tmp_env1->flags == 0xFF) { + gd->env_valid = 2; + } else { + /* + * this differs from code in env_flash.c, but I think a sane + * default path is desirable. + */ + gd->env_valid = 2; + } + + if (gd->env_valid == 1) + ep = tmp_env1; + else + ep = tmp_env2; + + ret = env_import((char *)ep, 0); + if (!ret) { + error("Cannot import environment: errno = %d\n", errno); + set_default_env("env_import failed"); + } err_read: spi_flash_free(env_flash); env_flash = NULL; -err_probe: -err_crc: - puts("*** Warning - bad CRC, using default environment\n\n"); +out: + free(tmp_env1); + free(tmp_env2); +} +#else +int saveenv(void) +{ + u32 saved_size, saved_offset, sector = 1; + char *res, *saved_buffer = NULL; + int ret = 1; + env_t env_new; + ssize_t len; + + if (!env_flash) { + env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, + CONFIG_ENV_SPI_CS, + CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); + if (!env_flash) { + set_default_env("!spi_flash_probe() failed"); + return 1; + } + } + + /* Is the sector larger than the env (i.e. embedded) */ + if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { + saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE; + saved_offset = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; + saved_buffer = malloc(saved_size); + if (!saved_buffer) + goto done; - if (default_environment_size > CFG_ENV_SIZE) { - gd->env_valid = 0; - puts("*** Error - default environment is too large\n\n"); + ret = spi_flash_read(env_flash, saved_offset, + saved_size, saved_buffer); + if (ret) + goto done; + } + + if (CONFIG_ENV_SIZE > CONFIG_ENV_SECT_SIZE) { + sector = CONFIG_ENV_SIZE / CONFIG_ENV_SECT_SIZE; + if (CONFIG_ENV_SIZE % CONFIG_ENV_SECT_SIZE) + sector++; + } + + 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\n", errno); + goto done; + } + env_new.crc = crc32(0, env_new.data, ENV_SIZE); + + puts("Erasing SPI flash..."); + ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET, + sector * CONFIG_ENV_SECT_SIZE); + if (ret) + goto done; + + puts("Writing to SPI flash..."); + ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET, + CONFIG_ENV_SIZE, &env_new); + if (ret) + goto done; + + if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { + ret = spi_flash_write(env_flash, saved_offset, + saved_size, saved_buffer); + if (ret) + goto done; + } + + ret = 0; + puts("done\n"); + + done: + if (saved_buffer) + free(saved_buffer); + + return ret; +} + +void env_relocate_spec(void) +{ + char buf[CONFIG_ENV_SIZE]; + int ret; + + env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, + CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); + if (!env_flash) { + set_default_env("!spi_flash_probe() failed"); 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; + ret = spi_flash_read(env_flash, + CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, buf); + if (ret) { + set_default_env("!spi_flash_read() failed"); + goto out; + } + + ret = env_import(buf, 1); + if (ret) + gd->env_valid = 1; +out: + spi_flash_free(env_flash); + env_flash = NULL; } +#endif int env_init(void) { @@ -127,5 +333,3 @@ int env_init(void) return 0; } - -#endif /* CFG_ENV_IS_IN_SPI_FLASH */