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vexpress64: store env in flash 

Add support for storing the environment in CFI NOR flash on Juno and FVP
models.

I also removed some config values that are not used by CFI flash parts.

Juno has 1 flash part with 259 sectors.  The first 255 sectors are
0x40000 (256kb) and are followed by 4 sectors of 0x10000 (64KB).

FVP models simulate a 64MB NOR flash part at base address 0x0FFC0000.
This part has 256 x 256kb sectors.  We use the last sector to store the
environment.

To save the NOR flash to a file, the following parameters should be
passed to the model:

    -C bp.flashloader1.fname=${FILENAME}
    -C bp.flashloader1.fnameWrite=${FILENAME}

Foundation models don't simulate the NOR flash, but having NOR support
in the u-boot binary does not harm:  attempting to write to the NOR will
fail gracefully.

Signed-off-by: Ryan Harkin <ryan.harkin@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Ryan Harkin 2015-11-18 10:39:09 +00:00 committed by Tom Rini
parent 3e933f43e9
commit f3c71c93d7
3 changed files with 20 additions and 19 deletions
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1
configs/vexpress_aemv8a_dram_defconfig
View File

@ -10,7 +10,6 @@ CONFIG_SYS_PROMPT="VExpress64# "
# CONFIG_CMD_EDITENV is not set
# CONFIG_CMD_ENV_EXISTS is not set
# CONFIG_CMD_LOADS is not set
# CONFIG_CMD_FLASH is not set
# CONFIG_CMD_FPGA is not set
# CONFIG_CMD_ITEST is not set
# CONFIG_CMD_SETEXPR is not set

1
configs/vexpress_aemv8a_semi_defconfig
View File

@ -10,7 +10,6 @@ CONFIG_SYS_PROMPT="VExpress64# "
# CONFIG_CMD_EDITENV is not set
# CONFIG_CMD_ENV_EXISTS is not set
# CONFIG_CMD_LOADS is not set
# CONFIG_CMD_FLASH is not set
# CONFIG_CMD_FPGA is not set
# CONFIG_CMD_ITEST is not set
# CONFIG_CMD_SETEXPR is not set

37
include/configs/vexpress_aemv8a.h
View File

@ -276,10 +276,6 @@
#endif
/* Do not preserve environment */
#define CONFIG_ENV_IS_NOWHERE 1
#define CONFIG_ENV_SIZE 0x1000
/* Monitor Command Prompt */
#define CONFIG_SYS_CBSIZE 512 /* Console I/O Buffer Size */
#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
@ -290,28 +286,35 @@
#define CONFIG_CMDLINE_EDITING
#define CONFIG_SYS_MAXARGS 64 /* max command args */
/* Flash memory is available on the Juno board only */
#ifndef CONFIG_TARGET_VEXPRESS64_JUNO
#define CONFIG_SYS_NO_FLASH
#ifdef CONFIG_TARGET_VEXPRESS64_JUNO
#define CONFIG_SYS_FLASH_BASE 0x08000000
/* 255 x 256KiB sectors + 4 x 64KiB sectors at the end = 259 */
#define CONFIG_SYS_MAX_FLASH_SECT 259
/* Store environment at top of flash in the same location as blank.img */
/* in the Juno firmware. */
#define CONFIG_ENV_ADDR 0x0BFC0000
#define CONFIG_ENV_SECT_SIZE 0x00010000
#else
#define CONFIG_SYS_FLASH_BASE 0x0C000000
/* 256 x 256KiB sectors */
#define CONFIG_SYS_MAX_FLASH_SECT 256
/* Store environment at top of flash */
#define CONFIG_ENV_ADDR 0x0FFC0000
#define CONFIG_ENV_SECT_SIZE 0x00040000
#endif
#define CONFIG_CMD_ARMFLASH
#define CONFIG_SYS_FLASH_CFI 1
#define CONFIG_FLASH_CFI_DRIVER 1
#define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_32BIT
#define CONFIG_SYS_FLASH_BASE 0x08000000
#define CONFIG_SYS_FLASH_SIZE 0x04000000 /* 64 MiB */
#define CONFIG_SYS_MAX_FLASH_BANKS 2
#define CONFIG_SYS_MAX_FLASH_BANKS 1
/* Timeout values in ticks */
#define CONFIG_SYS_FLASH_ERASE_TOUT (2 * CONFIG_SYS_HZ) /* Erase Timeout */
#define CONFIG_SYS_FLASH_WRITE_TOUT (2 * CONFIG_SYS_HZ) /* Write Timeout */
/* 255 0x40000 sectors + first or last sector may have 4 erase regions = 259 */
#define CONFIG_SYS_MAX_FLASH_SECT 259 /* Max sectors */
#define CONFIG_SYS_FLASH_USE_BUFFER_WRITE /* use buffered writes */
#define CONFIG_SYS_FLASH_PROTECTION /* The devices have real protection */
#define CONFIG_SYS_FLASH_EMPTY_INFO /* flinfo indicates empty blocks */
#define FLASH_MAX_SECTOR_SIZE 0x00040000
#define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
#define CONFIG_ENV_IS_IN_FLASH 1
#endif
#endif /* __VEXPRESS_AEMV8A_H */