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vexpress64: store env in flash

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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
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@@ -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