/*
- * (C) Copyright 2000-2002
+ * (C) Copyright 2000-2010
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
*
* (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 <common.h>
#include <environment.h>
#include <malloc.h>
+#include <spi.h>
#include <spi_flash.h>
+#include <search.h>
+#include <errno.h>
#ifndef CONFIG_ENV_SPI_BUS
# define CONFIG_ENV_SPI_BUS 0
#endif
#ifndef CONFIG_ENV_SPI_CS
-# define CONFIG_ENV_SPI_CS 0
+# define CONFIG_ENV_SPI_CS 0
#endif
#ifndef CONFIG_ENV_SPI_MAX_HZ
# define CONFIG_ENV_SPI_MAX_HZ 1000000
#endif
#ifdef CONFIG_ENV_OFFSET_REDUND
-static ulong env_offset = CONFIG_ENV_OFFSET;
-static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND;
+static ulong env_offset = CONFIG_ENV_OFFSET;
+static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND;
-#define ACTIVE_FLAG 1
-#define OBSOLETE_FLAG 0
-#endif /* CONFIG_ENV_ADDR_REDUND */
+#define ACTIVE_FLAG 1
+#define OBSOLETE_FLAG 0
+#endif /* CONFIG_ENV_OFFSET_REDUND */
DECLARE_GLOBAL_DATA_PTR;
-/* references to names in env_common.c */
-extern uchar default_environment[];
-
-char * env_name_spec = "SPI Flash";
-env_t *env_ptr;
+char *env_name_spec = "SPI Flash";
static struct spi_flash *env_flash;
-uchar env_get_char_spec(int index)
-{
- return *((uchar *)(gd->env_addr + index));
-}
-
#if defined(CONFIG_ENV_OFFSET_REDUND)
-void swap_env(void)
-{
- ulong tmp_offset = env_offset;
-
- env_offset = env_new_offset;
- env_new_offset = tmp_offset;
-}
-
int saveenv(void)
{
- u32 saved_size, saved_offset;
- char *saved_buffer = NULL;
- u32 sector = 1;
- int ret;
- char flag = OBSOLETE_FLAG, new_flag = ACTIVE_FLAG;
+ env_t env_new;
+ char *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");
- return 1;
+ 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;
+ }
+ }
+
+ ret = env_export(&env_new);
+ if (ret)
+ return ret;
+ 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);
+ saved_buffer = memalign(ARCH_DMA_MINALIGN, saved_size);
if (!saved_buffer) {
ret = 1;
goto done;
goto done;
puts("Writing to SPI flash...");
- ret = spi_flash_write(env_flash,
- env_new_offset + offsetof(env_t, data),
- sizeof(env_ptr->data), env_ptr->data);
- if (ret)
- goto done;
-
- ret = spi_flash_write(env_flash,
- env_new_offset + offsetof(env_t, crc),
- sizeof(env_ptr->crc), &env_ptr->crc);
- if (ret)
- goto done;
- ret = spi_flash_write(env_flash,
- env_offset + offsetof(env_t, flags),
- sizeof(env_ptr->flags), &flag);
- if (ret)
- goto done;
-
- ret = spi_flash_write(env_flash,
- env_new_offset + offsetof(env_t, flags),
- sizeof(env_ptr->flags), &new_flag);
+ ret = spi_flash_write(env_flash, env_new_offset,
+ CONFIG_ENV_SIZE, &env_new);
if (ret)
goto done;
goto done;
}
- swap_env();
+ ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags),
+ sizeof(env_new.flags), &flag);
+ if (ret)
+ goto done;
- ret = 0;
puts("done\n");
+ 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;
}
int crc1_ok = 0, crc2_ok = 0;
env_t *tmp_env1 = NULL;
env_t *tmp_env2 = NULL;
- uchar flag1, flag2;
- /* current_env is set only in case both areas are valid! */
- int current_env = 0;
-
- tmp_env1 = (env_t *)malloc(CONFIG_ENV_SIZE);
- if (!tmp_env1) {
- puts("*** Warning: could not init environment,"
- " using defaults\n\n");
- goto out;
- }
-
- tmp_env2 = (env_t *)malloc(CONFIG_ENV_SIZE);
- if (!tmp_env2) {
- puts("*** Warning: could not init environment,"
- " using defaults\n\n");
+ env_t *ep = NULL;
+
+ tmp_env1 = (env_t *)memalign(ARCH_DMA_MINALIGN,
+ CONFIG_ENV_SIZE);
+ tmp_env2 = (env_t *)memalign(ARCH_DMA_MINALIGN,
+ CONFIG_ENV_SIZE);
+ 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)
- goto err_probe;
+ 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)
+ if (ret) {
+ set_default_env("!spi_flash_read() failed");
goto err_read;
+ }
if (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc)
crc1_ok = 1;
- flag1 = tmp_env1->flags;
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;
- flag2 = tmp_env2->flags;
}
- if (!crc1_ok && !crc2_ok)
- goto err_crc;
- else if (crc1_ok && !crc2_ok) {
+ if (!crc1_ok && !crc2_ok) {
+ set_default_env("!bad CRC");
+ goto err_read;
+ } else if (crc1_ok && !crc2_ok) {
gd->env_valid = 1;
- memcpy(env_ptr, tmp_env1, CONFIG_ENV_SIZE);
} 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;
- memcpy(env_ptr, tmp_env2, CONFIG_ENV_SIZE);
- swap_env();
- } else if (flag1 == ACTIVE_FLAG && flag2 == OBSOLETE_FLAG) {
+ } 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 = 1;
- memcpy(env_ptr, tmp_env1, CONFIG_ENV_SIZE);
- } else if (flag1 == OBSOLETE_FLAG && flag2 == ACTIVE_FLAG) {
+ } else if (tmp_env1->flags == 0xFF) {
gd->env_valid = 1;
- memcpy(env_ptr, tmp_env2, CONFIG_ENV_SIZE);
- swap_env();
- } else if (flag1 == flag2) {
+ } else if (tmp_env2->flags == 0xFF) {
gd->env_valid = 2;
- memcpy(env_ptr, tmp_env1, CONFIG_ENV_SIZE);
- current_env = 1;
- } else if (flag1 == 0xFF) {
- gd->env_valid = 2;
- memcpy(env_ptr, tmp_env1, CONFIG_ENV_SIZE);
- current_env = 1;
} else {
/*
* this differs from code in env_flash.c, but I think a sane
* default path is desirable.
*/
- gd->env_valid = 2;
- memcpy(env_ptr, tmp_env2, CONFIG_ENV_SIZE);
- swap_env();
- current_env = 2;
- }
- if (current_env == 1) {
- if (flag2 != OBSOLETE_FLAG) {
- flag2 = OBSOLETE_FLAG;
- spi_flash_write(env_flash,
- env_new_offset + offsetof(env_t, flags),
- sizeof(env_ptr->flags), &flag2);
- }
- if (flag1 != ACTIVE_FLAG) {
- flag1 = ACTIVE_FLAG;
- spi_flash_write(env_flash,
- env_offset + offsetof(env_t, flags),
- sizeof(env_ptr->flags), &flag1);
- }
- } else if (current_env == 2) {
- if (flag1 != OBSOLETE_FLAG) {
- flag1 = OBSOLETE_FLAG;
- spi_flash_write(env_flash,
- env_new_offset + offsetof(env_t, flags),
- sizeof(env_ptr->flags), &flag1);
- }
- if (flag2 != ACTIVE_FLAG) {
- flag2 = ACTIVE_FLAG;
- spi_flash_write(env_flash,
- env_offset + offsetof(env_t, flags),
- sizeof(env_ptr->flags), &flag2);
- }
+ gd->env_valid = 1;
}
- if (gd->env_valid == 2) {
- puts("*** Warning - some problems detected "
- "reading environment; recovered successfully\n\n");
+
+ 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");
}
- if (tmp_env1)
- free(tmp_env1);
- if (tmp_env2)
- free(tmp_env2);
- return;
err_read:
spi_flash_free(env_flash);
env_flash = NULL;
-err_probe:
-err_crc:
- puts("*** Warning - bad CRC, using default environment\n\n");
out:
- if (tmp_env1)
- free(tmp_env1);
- if (tmp_env2)
- free(tmp_env2);
- set_default_env();
+ free(tmp_env1);
+ free(tmp_env2);
}
#else
int saveenv(void)
{
- u32 saved_size, saved_offset;
- char *saved_buffer = NULL;
- u32 sector = 1;
- int ret;
+ u32 saved_size, saved_offset, sector = 1;
+ char *saved_buffer = NULL;
+ int ret = 1;
+ env_t env_new;
if (!env_flash) {
- puts("Environment SPI flash not initialized\n");
- return 1;
+ 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) */
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) {
- ret = 1;
+ if (!saved_buffer)
goto done;
- }
- ret = spi_flash_read(env_flash, saved_offset, saved_size, saved_buffer);
+
+ ret = spi_flash_read(env_flash, saved_offset,
+ saved_size, saved_buffer);
if (ret)
goto done;
}
sector++;
}
+ ret = env_export(&env_new);
+ if (ret)
+ goto done;
+
puts("Erasing SPI flash...");
- ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET, sector * CONFIG_ENV_SECT_SIZE);
+ 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_ptr);
+ 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);
+ ret = spi_flash_write(env_flash, saved_offset,
+ saved_size, saved_buffer);
if (ret)
goto done;
}
done:
if (saved_buffer)
free(saved_buffer);
+
return ret;
}
void env_relocate_spec(void)
{
int ret;
+ char *buf = NULL;
+ buf = (char *)memalign(ARCH_DMA_MINALIGN, CONFIG_ENV_SIZE);
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)
- goto err_probe;
-
- ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, env_ptr);
- if (ret)
- goto err_read;
-
- if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc)
- goto err_crc;
-
- gd->env_valid = 1;
+ if (!env_flash) {
+ set_default_env("!spi_flash_probe() failed");
+ if (buf)
+ free(buf);
+ return;
+ }
- return;
+ ret = spi_flash_read(env_flash,
+ CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, buf);
+ if (ret) {
+ set_default_env("!spi_flash_read() failed");
+ goto out;
+ }
-err_read:
+ ret = env_import(buf, 1);
+ if (ret)
+ gd->env_valid = 1;
+out:
spi_flash_free(env_flash);
+ if (buf)
+ free(buf);
env_flash = NULL;
-err_probe:
-err_crc:
- puts("*** Warning - bad CRC, using default environment\n\n");
-
- set_default_env();
}
#endif
projects / karo-tx-uboot.git / blobdiff