Merge branch 'sf' of git://git.denx.de/u-boot-blackfin

8 files changed, 276 insertions, 16 deletions

diff --git a/common/env_sf.c b/common/env_sf.c
index 6575b6d..4391d61 100644
--- a/common/env_sf.c
+++ b/common/env_sf.c
@@ -43,6 +43,14 @@
 # define CONFIG_ENV_SPI_MODE	SPI_MODE_3
 #endif
 
+#ifdef 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 */
+
 DECLARE_GLOBAL_DATA_PTR;
 
 /* references to names in env_common.c */
@@ -58,6 +66,229 @@ 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;
+
+	if (!env_flash) {
+		puts("Environment SPI flash not initialized\n");
+		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 = 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...");
+	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);
+	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;
+	}
+
+	swap_env();
+
+	ret = 0;
+	puts("done\n");
+
+ 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;
+	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");
+		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;
+
+	ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET,
+				CONFIG_ENV_SIZE, tmp_env1);
+	if (ret)
+		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) {
+		gd->env_valid = 1;
+		memcpy(env_ptr, tmp_env1, CONFIG_ENV_SIZE);
+	} else if (!crc1_ok && crc2_ok) {
+		gd->env_valid = 1;
+		memcpy(env_ptr, tmp_env2, CONFIG_ENV_SIZE);
+		swap_env();
+	} else if (flag1 == ACTIVE_FLAG && flag2 == OBSOLETE_FLAG) {
+		gd->env_valid = 1;
+		memcpy(env_ptr, tmp_env1, CONFIG_ENV_SIZE);
+	} else if (flag1 == OBSOLETE_FLAG && flag2 == ACTIVE_FLAG) {
+		gd->env_valid = 1;
+		memcpy(env_ptr, tmp_env2, CONFIG_ENV_SIZE);
+		swap_env();
+	} else if (flag1 == flag2) {
+		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);
+		}
+	}
+	if (gd->env_valid == 2) {
+		puts("*** Warning - some problems detected "
+			"reading environment; recovered successfully\n\n");
+	}
+	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();
+}
+#else
 int saveenv(void)
 {
 	u32 saved_size, saved_offset;
@@ -144,6 +375,7 @@ err_crc:
 
 	set_default_env();
 }
+#endif
 
 int env_init(void)
 {
diff --git a/drivers/mtd/spi/atmel.c b/drivers/mtd/spi/atmel.c
index 8306c00..8d02169 100644
--- a/drivers/mtd/spi/atmel.c
+++ b/drivers/mtd/spi/atmel.c
@@ -467,7 +467,7 @@ out:
 struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode)
 {
 	const struct atmel_spi_flash_params *params;
-	unsigned long page_size;
+	unsigned page_size;
 	unsigned int family;
 	struct atmel_spi_flash *asf;
 	unsigned int i;
@@ -540,8 +540,9 @@ struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode)
 				* params->blocks_per_sector
 				* params->nr_sectors;
 
-	debug("SF: Detected %s with page size %lu, total %u bytes\n",
-			params->name, page_size, asf->flash.size);
+	printf("SF: Detected %s with page size %u, total ",
+	       params->name, page_size);
+	print_size(asf->flash.size, "\n");
 
 	return &asf->flash;
 
diff --git a/drivers/mtd/spi/macronix.c b/drivers/mtd/spi/macronix.c
index fe1310b..76d5284 100644
--- a/drivers/mtd/spi/macronix.c
+++ b/drivers/mtd/spi/macronix.c
@@ -330,8 +330,9 @@ struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
 	mcx->flash.size = params->page_size * params->pages_per_sector
 	    * params->sectors_per_block * params->nr_blocks;
 
-	printf("SF: Detected %s with page size %u, total %u bytes\n",
-	      params->name, params->page_size, mcx->flash.size);
+	printf("SF: Detected %s with page size %u, total ",
+	       params->name, params->page_size);
+	print_size(mcx->flash.size, "\n");
 
 	return &mcx->flash;
 }
diff --git a/drivers/mtd/spi/spansion.c b/drivers/mtd/spi/spansion.c
index fdb7917..d6c1a5f 100644
--- a/drivers/mtd/spi/spansion.c
+++ b/drivers/mtd/spi/spansion.c
@@ -343,8 +343,9 @@ struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
 	spsn->flash.size = params->page_size * params->pages_per_sector
 	    * params->nr_sectors;
 
-	debug("SF: Detected %s with page size %u, total %u bytes\n",
-	      params->name, params->page_size, spsn->flash.size);
+	printf("SF: Detected %s with page size %u, total ",
+	       params->name, params->page_size);
+	print_size(spsn->flash.size, "\n");
 
 	return &spsn->flash;
 }
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 612f819..ea875dc 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -106,7 +106,7 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
 
 	spi = spi_setup_slave(bus, cs, max_hz, spi_mode);
 	if (!spi) {
-		debug("SF: Failed to set up slave\n");
+		printf("SF: Failed to set up slave\n");
 		return NULL;
 	}
 
@@ -147,6 +147,7 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
 #endif
 #ifdef CONFIG_SPI_FLASH_STMICRO
 	case 0x20:
+	case 0xff: /* Let the stmicro func handle non-JEDEC ids */
 		flash = spi_flash_probe_stmicro(spi, idcode);
 		break;
 #endif
@@ -156,7 +157,7 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
 		break;
 #endif
 	default:
-		debug("SF: Unsupported manufacturer %02X\n", idcode[0]);
+		printf("SF: Unsupported manufacturer %02X\n", idcode[0]);
 		flash = NULL;
 		break;
 	}
diff --git a/drivers/mtd/spi/sst.c b/drivers/mtd/spi/sst.c
index 50e9299..2557891 100644
--- a/drivers/mtd/spi/sst.c
+++ b/drivers/mtd/spi/sst.c
@@ -364,8 +364,9 @@ spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode)
 	stm->flash.read = sst_read_fast;
 	stm->flash.size = SST_SECTOR_SIZE * params->nr_sectors;
 
-	debug("SF: Detected %s with page size %u, total %u bytes\n",
-	      params->name, SST_SECTOR_SIZE, stm->flash.size);
+	printf("SF: Detected %s with page size %u, total ",
+	       params->name, SST_SECTOR_SIZE);
+	print_size(stm->flash.size, "\n");
 
 	/* Flash powers up read-only, so clear BP# bits */
 	sst_unlock(&stm->flash);
diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c
index ae0d047..3134027 100644
--- a/drivers/mtd/spi/stmicro.c
+++ b/drivers/mtd/spi/stmicro.c
@@ -46,6 +46,7 @@
 #define CMD_M25PXX_DP		0xb9	/* Deep Power-down */
 #define CMD_M25PXX_RES		0xab	/* Release from DP, and Read Signature */
 
+#define STM_ID_M25P10		0x11
 #define STM_ID_M25P16		0x15
 #define STM_ID_M25P20		0x12
 #define STM_ID_M25P32		0x16
@@ -78,6 +79,13 @@ static inline struct stmicro_spi_flash *to_stmicro_spi_flash(struct spi_flash
 
 static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
 	{
+		.idcode1 = STM_ID_M25P10,
+		.page_size = 256,
+		.pages_per_sector = 128,
+		.nr_sectors = 4,
+		.name = "M25P10",
+	},
+	{
 		.idcode1 = STM_ID_M25P16,
 		.page_size = 256,
 		.pages_per_sector = 256,
@@ -316,6 +324,19 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
 	struct stmicro_spi_flash *stm;
 	unsigned int i;
 
+	if (idcode[0] == 0xff) {
+		i = spi_flash_cmd(spi, CMD_M25PXX_RES,
+				  idcode, 4);
+		if (i)
+			return NULL;
+		if ((idcode[3] & 0xf0) == 0x10) {
+			idcode[0] = 0x20;
+			idcode[1] = 0x20;
+			idcode[2] = idcode[3] + 1;
+		} else
+			return NULL;
+	}
+
 	for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) {
 		params = &stmicro_spi_flash_table[i];
 		if (params->idcode1 == idcode[2]) {
@@ -344,8 +365,9 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
 	stm->flash.size = params->page_size * params->pages_per_sector
 	    * params->nr_sectors;
 
-	debug("SF: Detected %s with page size %u, total %u bytes\n",
-	      params->name, params->page_size, stm->flash.size);
+	printf("SF: Detected %s with page size %u, total ",
+	       params->name, params->page_size);
+	print_size(stm->flash.size, "\n");
 
 	return &stm->flash;
 }
diff --git a/drivers/mtd/spi/winbond.c b/drivers/mtd/spi/winbond.c
index b8da923..ff1df25 100644
--- a/drivers/mtd/spi/winbond.c
+++ b/drivers/mtd/spi/winbond.c
@@ -289,7 +289,7 @@ out:
 struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)
 {
 	const struct winbond_spi_flash_params *params;
-	unsigned long page_size;
+	unsigned page_size;
 	struct winbond_spi_flash *stm;
 	unsigned int i;
 
@@ -325,8 +325,9 @@ struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)
 				* params->sectors_per_block
 				* params->nr_blocks;
 
-	debug("SF: Detected %s with page size %u, total %u bytes\n",
-			params->name, page_size, stm->flash.size);
+	printf("SF: Detected %s with page size %u, total ",
+	       params->name, page_size);
+	print_size(stm->flash.size, "\n");
 
 	return &stm->flash;
 }