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common/env_sf.c
7.36 KB
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/* |
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* (C) Copyright 2000-2010 |
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Andreas Heppel <aheppel@sysgo.de> * * (C) Copyright 2008 Atmel Corporation * |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ #include <common.h> |
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#include <environment.h> |
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#include <malloc.h> |
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#include <spi_flash.h> |
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#include <search.h> #include <errno.h> |
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#ifndef CONFIG_ENV_SPI_BUS # define CONFIG_ENV_SPI_BUS 0 |
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#endif |
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#ifndef CONFIG_ENV_SPI_CS |
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# define CONFIG_ENV_SPI_CS 0 |
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#endif |
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#ifndef CONFIG_ENV_SPI_MAX_HZ # define CONFIG_ENV_SPI_MAX_HZ 1000000 |
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#endif |
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#ifndef CONFIG_ENV_SPI_MODE # define CONFIG_ENV_SPI_MODE SPI_MODE_3 |
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#endif |
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#ifdef CONFIG_ENV_OFFSET_REDUND |
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static ulong env_offset = CONFIG_ENV_OFFSET; static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND; |
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#define ACTIVE_FLAG 1 #define OBSOLETE_FLAG 0 |
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#endif /* CONFIG_ENV_OFFSET_REDUND */ |
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DECLARE_GLOBAL_DATA_PTR; |
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char *env_name_spec = "SPI Flash"; |
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static struct spi_flash *env_flash; |
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#if defined(CONFIG_ENV_OFFSET_REDUND) |
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int saveenv(void) { |
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env_t env_new; |
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ssize_t len; |
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char *res, *saved_buffer = NULL, flag = OBSOLETE_FLAG; u32 saved_size, saved_offset, sector = 1; |
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int ret; |
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if (!env_flash) { |
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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; } |
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} |
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res = (char *)&env_new.data; |
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len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); |
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if (len < 0) { error("Cannot export environment: errno = %d ", errno); return 1; } |
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env_new.crc = crc32(0, env_new.data, ENV_SIZE); env_new.flags = ACTIVE_FLAG; |
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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; } |
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/* 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..."); ret = spi_flash_erase(env_flash, env_new_offset, sector * CONFIG_ENV_SECT_SIZE); if (ret) goto done; puts("Writing to SPI flash..."); |
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ret = spi_flash_write(env_flash, env_new_offset, |
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CONFIG_ENV_SIZE, &env_new); |
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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; } |
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ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags), |
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sizeof(env_new.flags), &flag); |
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if (ret) goto done; |
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puts("done "); |
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gd->env_valid = gd->env_valid == 2 ? 1 : 2; |
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printf("Valid environment: %d ", (int)gd->env_valid); |
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done: if (saved_buffer) free(saved_buffer); |
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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; |
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env_t *ep = NULL; |
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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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if (!tmp_env1 || !tmp_env2) { |
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set_default_env("!malloc() failed"); |
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goto out; |
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} env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); |
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if (!env_flash) { set_default_env("!spi_flash_probe() failed"); |
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goto out; |
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} |
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ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, tmp_env1); |
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if (ret) { set_default_env("!spi_flash_read() failed"); |
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goto err_read; |
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} |
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if (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc) crc1_ok = 1; |
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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; |
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} |
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if (!crc1_ok && !crc2_ok) { |
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set_default_env("!bad CRC"); |
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goto err_read; |
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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; } else if (tmp_env1->flags == ACTIVE_FLAG && tmp_env2->flags == OBSOLETE_FLAG) { |
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gd->env_valid = 1; |
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} else if (tmp_env1->flags == OBSOLETE_FLAG && tmp_env2->flags == ACTIVE_FLAG) { |
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gd->env_valid = 2; |
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} else if (tmp_env1->flags == tmp_env2->flags) { |
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gd->env_valid = 2; |
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} else if (tmp_env1->flags == 0xFF) { |
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gd->env_valid = 2; |
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} else { /* * this differs from code in env_flash.c, but I think a sane * default path is desirable. */ gd->env_valid = 2; |
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} |
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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 ", errno); set_default_env("env_import failed"); |
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} |
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err_read: spi_flash_free(env_flash); env_flash = NULL; |
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out: |
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free(tmp_env1); free(tmp_env2); |
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} #else |
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int saveenv(void) { |
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u32 saved_size, saved_offset, sector = 1; char *res, *saved_buffer = NULL; int ret = 1; |
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env_t env_new; |
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ssize_t len; |
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if (!env_flash) { |
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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; } |
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} |
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/* 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); |
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if (!saved_buffer) |
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goto done; |
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ret = spi_flash_read(env_flash, saved_offset, saved_size, saved_buffer); |
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if (ret) goto done; } |
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if (CONFIG_ENV_SIZE > CONFIG_ENV_SECT_SIZE) { sector = CONFIG_ENV_SIZE / CONFIG_ENV_SECT_SIZE; if (CONFIG_ENV_SIZE % CONFIG_ENV_SECT_SIZE) |
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sector++; } |
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res = (char *)&env_new.data; |
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len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); |
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if (len < 0) { error("Cannot export environment: errno = %d ", errno); goto done; } |
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env_new.crc = crc32(0, env_new.data, ENV_SIZE); |
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puts("Erasing SPI flash..."); |
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ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET, sector * CONFIG_ENV_SECT_SIZE); |
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if (ret) goto done; |
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puts("Writing to SPI flash..."); |
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ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET, |
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CONFIG_ENV_SIZE, &env_new); |
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if (ret) goto done; |
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if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { |
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ret = spi_flash_write(env_flash, saved_offset, saved_size, saved_buffer); |
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if (ret) goto done; } ret = 0; |
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puts("done "); |
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done: if (saved_buffer) free(saved_buffer); |
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return ret; |
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} void env_relocate_spec(void) { |
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char buf[CONFIG_ENV_SIZE]; |
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int ret; |
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env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); |
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if (!env_flash) { set_default_env("!spi_flash_probe() failed"); return; } |
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ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, buf); if (ret) { set_default_env("!spi_flash_read() failed"); goto out; } |
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ret = env_import(buf, 1); |
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if (ret) gd->env_valid = 1; out: |
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spi_flash_free(env_flash); env_flash = NULL; |
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} |
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#endif |
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int env_init(void) { /* SPI flash isn't usable before relocation */ gd->env_addr = (ulong)&default_environment[0]; gd->env_valid = 1; return 0; } |