Some UniPhier boards are equipped with an expansion slot that
some optional SRAM/NOR-flash cards can be attached to.  So, run-time
detection of the number of flash banks would be more user-friendly.

Until this commit, UniPhier boards have achieved this by (ab)using
board_flash_wp_on() because the boot failed if flash_size got zero.
Fortunately, this problem was solved by commit 70879a92561a (flash:
do not fail even if flash_size is zero).

Now it is possible to throw away such a tricky workaround.  This
commit also enables CONFIG_SYS_MAX_FLASH_BANKS_DETECT for further
refactoring.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

__user and __iomem are defined in include/linux/compiler.h.
MAX_ERRNO is defined in include/linux/err.h.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

The CPU directory of IMX6 is arch/arm/cpu/armv7, so setting
CONFIG_SPL_START_S_PATH to arch/arm/cpu/armv7 is totally redundant.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Stefano Babic <sbabic@denx.de>

The CPU directory of this board is arch/powerpc/cpu/mpc5xxx.
Without the CONFIG_SPL_START_S_PATH and CONFIG_SPL_LDSCRIPT defines,
the same start.o and u-boot-spl.lds are selected by default.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Stefan Roese <sr@denx.de>
Acked-by: Stefan Roese <sr@denx.de>

The CPU directory of this board is arch/powerpc/cpu/ppc4xx.
Without the CONFIG_SPL_START_S_PATH and CONFIG_SPL_LDSCRIPT defines,
the same start.o and u-boot-spl.lds are selected by default.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Acked-by: Stefan Roese <sr@denx.de>

This board sprinkles #ifdef(CONFIG_HERMES) over various global files
such as include/common.h, common/board_r.c, common/cmd_bdinfo.c.
Let's zap such an ill-behaved board.

It has not been converted to generic board yet and mpc8xx is old
enough.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>

Enable ENV_IS_IN_FAT so that the environment can be stored persistently.
It's stored in the FAT partition that the RPi firmware requires. On most
RPis, this is on the SD card (which must be present in order for the
system to boot). On the CM this is on the built-in eMMC device.

Since we now have a persistent environment, there's no need to load
uEnv.txt at boot; we only did that to work around the lack of persistent
environment.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>