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u-boot/board/st/nhk8815
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Masahiro Yamada 461be2f96e kconfig: remove redundant "string" type in arch and board Kconfigs 
Now the types of CONFIG_SYS_{ARCH, CPU, SOC, VENDOR, BOARD, CONFIG_NAME}
are specified in arch/Kconfig.

We can delete the ones in arch and board Kconfig files.

This commit can be easily reproduced by the following command:

find . -name Kconfig -a ! -path ./arch/Kconfig | xargs sed -i -e '
/config[[:space:]]SYS_\(ARCH\|CPU\|SOC\|\VENDOR\|BOARD\|CONFIG_NAME\)/ {
    N
    s/\n[[:space:]]*string//
}
'

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-09-13 16:43:55 -04:00
..
Kconfig kconfig: remove redundant "string" type in arch and board Kconfigs 2014-09-13 16:43:55 -04:00
MAINTAINERS Add board MAINTAINERS files 2014-07-30 08:48:06 -04:00
Makefile board: arm: convert makefiles to Kbuild style 2013-11-01 11:42:12 -04:00
nhk8815.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
README.nhk8815 doc: cleanup - move board READMEs into respective board directories 2012-07-29 15:42:02 +02:00

README.nhk8815 

The Nomadik 8815 CPU has a "secure" boot mode where no external access
(not even JTAG) is allowed.  The "remap" bits in the evaluation board
are configured in order to boot from the internal ROM memory (in
secure mode).

The boot process as defined by the manufacturer executes external code
(loaded from NAND or OneNAND) that that disables such "security" in
order to run u-boot and later the kernel without constraints. Such
code is a proprietary initial boot loader, called "X-Loader" (in case
anyone wonders, it has no relations with other loaders with the same
name and there is no GPL code inside the ST X-Loader).

SDRAM configuration, PLL setup and initial loading from NAND is
implemented in the X-Loader, so U-Boot is already running in SDRAM
when control is handed over to it.

The Makefile offers two different configurations to be used if you
boot from Nand or OneNand.

    make nhk8815_config
    make nhk8815_onenand_config

Both support OneNand and Nand. Since U-Boot, running in RAM, can't know
where it was loaded from, the configurations differ in where the filesystem
is looked for by default.


On www.st.com/nomadik and on www.stnwireless.com there are documents,
summary data and white papers on Nomadik. The full datasheet for
STn8815 is not currently available on line but under specific request
to the local ST sales offices.