This patch adds a custom U-Boot command "wdogtoggle" which enables the
external hardware watchdog toggling via an GPIO pin on the a4m2k
board. After issuing this commands, the watchdog will be serviced
by U-Boot so that the user can use all U-Boot commands from the
prompt.
Signed-off-by: NStefan Roese <sr@denx.de>

This patch adds the a4m2k MPC5200B board port. Its a derivate of
the a3m071 board with only minor changes.

Additionally this patch includes some clean-up changes:
- Remove I2C support from a3m071 as its unused
- Fix/enhance default env variables
- Fix some comments
- Add newly introduced CONFIG_SPL_TARGET to automatically build
  "u-boot-img.bin"
- Fix dtb patching in READ desciption for SPL Linux booting:
  "fdt chosen" needs to get called to patch/create the chosen node.
- Add missing call to spl_board_init():
  Define CONFIG_SPL_BOARD_INIT so that spl_board_init() will get
  called in the SPL version.
Signed-off-by: NStefan Roese <sr@denx.de>

On MPC5200, the initial RAM (and gd) is located in the internal
SRAM. So we can actually call the preloader console init code
before calling initdram(). This makes serial output (printf)
available very early, even before SDRAM init, which has been
an U-Boot priciple from day 1.
Signed-off-by: NStefan Roese <sr@denx.de>

Make use of a device tree on coreboot boards, and set the default
to link.
Signed-off-by: NSimon Glass <sjg@chromium.org>

This is currently set to coreboot.dtsi, but we cannot support this on
old device tree compilers (dtc <= 1.3), so adjust to use ARCH_CPU_DTS
to let the Makefile preprocessor sort this out.
Signed-off-by: NSimon Glass <sjg@chromium.org>

This does not actually change normal behaviour, but adds a check that
should detect corruption of relocation data (e.g. by using BSS data
prior to relocation).

Also add additional debugging output when enabled.

During this investigation, two situations have been seen:
1. calculate_relocation_address():
	uintptr_t size = (uintptr_t)&__bss_end - (uintptr_t)&__text_start;

turns into
     111166f:	b8 83 c4 17 01       	mov    $0x117c483,%eax

whih is beyond the end of bss:

0117b484 g       .bss	00000000 __bss_end

Somehow the __bss_end here is 255 bytes ahead.

2. do_elf_reloc_fixups():

	uintptr_t size = (uintptr_t)&__bss_end - (uintptr_t)&__text_start;

Here the __text_start is 0 in the file:

 1111d9f:	bb a0 e0 13 01       	mov    $0x113e0a0,%ebx
1111da4:	81 ef 00 00 00 00    	sub    $0x0,%edi

As it happens, both of these are in pre-relocation code.

For these reasons we silent check and ignore bad relocations.
Signed-off-by: NSimon Glass <sjg@chromium.org>

With CONFIG_OF_CONTROL we may have an FDT in the BSS region. Relocate
it up with the rest of U-Boot to keep the rest of memory free.
Signed-off-by: NSimon Glass <sjg@chromium.org>

At present BSS data is including in the image, which wastes binary space.
Remove it by rearranging the sections so that BSS is last.
Signed-off-by: NSimon Glass <sjg@chromium.org>

With this symbol we can easy append something (e.g. an FDT) to the U-Boot
binary and access it from within U-Boot.
Signed-off-by: NSimon Glass <sjg@chromium.org>

It is useful to be able to access the timer before U-Boot has relocated
so that we can fully support bootstage.

Add new global_data members to support this.
Signed-off-by: NSimon Glass <sjg@chromium.org>

At present most x86 cache operations are undefined. Add a basic
implementation for these.
Signed-off-by: NSimon Glass <sjg@chromium.org>

The memory layout calculations are done in calculate_relocation_address(),
and coreboot has its own version of this function. But in fact all we
really need is to set the top of usable RAM, and then the base version
will work as is.

So instead of allowing the whole calculate_relocation_address() function
to be replaced, create board_get_usable_ram_top() which can be used by
a board to specify the top of the area where U-Boot relocations to.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Signed-off-by: NTom Rini <trini@ti.com>

Signed-off-by: NSonic Zhang <sonic.adi@gmail.com>

All code related to the bootm ramdisk subcommand is conditionally
enabled by CONFIG_SYS_BOOT_RAMDISK_HIGH except for the help message.
Replace the CONFIG_ARCH defines by CONFIG_SYS_BOOT_RAMDISK_HIGH
to fix this.
Signed-off-by: NDaniel Schwierzeck <daniel.schwierzeck@gmail.com>

If readline says there was an error, don't write to the variable!
Signed-off-by: NJoe Hershberger <joe.hershberger@ni.com>

UBI can mount volumes by name or number  The current code forces you
to name the volume by prepending every name with "ubi:".

>From fs/ubifs/super.c
 * There are several ways to specify UBI volumes when mounting UBIFS:
 * o ubiX_Y    - UBI device number X, volume Y;
 * o ubiY      - UBI device number 0, volume Y;
 * o ubiX:NAME - mount UBI device X, volume with name NAME;
 * o ubi:NAME  - mount UBI device 0, volume with name NAME.

Now any name passed in any of the above forms are allowed.

Also update the configs that referenced ubifsmount.
Signed-off-by: NJoe Hershberger <joe.hershberger@ni.com>

The 'sb' command allows loading files from the host, and listing
directories.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NTom Rini <trini@ti.com>

These are useful for build-testing code, at least.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NTom Rini <trini@ti.com>

The new 'sb' command is intended to deal with sandbox-specific features
that have no parallel in other archs. This commit adds two sub-commands
to list a directory and read a file from the host filesystem.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NTom Rini <trini@ti.com>

This allows reading of files from the host filesystem in sandbox.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NTom Rini <trini@ti.com>

This implementation uses opendir()/readdir() to access the directory
information and then puts it in a linked list for the caller's use.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NTom Rini <trini@ti.com>

It doesn't make a lot of sense to have these methods in fs.c. They are
filesystem-specific, not generic code. Add each to the relevant
filesystem and remove the associated #ifdefs in fs.c.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NTom Rini <trini@ti.com>

This allows us to use filesystems on sandbox. It has no effect on other
architectures.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NTom Rini <trini@ti.com>

Rather than rely on global variables for the probe functions, pass in
the information that we need filled in. This allows us to potentially
keep the variables private to fs.c in the future, and the meaning of
the probe function is clearer.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NTom Rini <trini@ti.com>

We can use the available methods and avoid using switch(). When the
filesystem is not supported, we fall through to the 'unsupported'
methods: fs_probe_unsupported() prints an error, so the others do
not need to.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NTom Rini <trini@ti.com>

There is a structure in fs.c with just a probe method. By adding methods
for other operations, we can avoid lots of #ifdefs and switch()s. As a
first step, create the structure ready for use.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NTom Rini <trini@ti.com>

This code seems to be entirely othogonal, so remove the #ifdef and put
the condition in the Makefile instead.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Add Bf60x resume from hibernate support
Signed-off-by: NSteven Miao <realmz6@gmail.com>
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NBob Liu <lliubbo@gmail.com>
Signed-off-by: NSonic Zhang <sonic.adi@gmail.com>

Signed-off-by: NBob Liu <lliubbo@gmail.com>
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NSonic Zhang <sonic.adi@gmail.com>

Spi driver for bf60x is different from old one, so implement a new
driver for it.
Signed-off-by: NScott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NBob Liu <lliubbo@gmail.com>
Signed-off-by: NSonic Zhang <sonic.adi@gmail.com>

Add rsi/sdh support for bf60x.
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NBob Liu <lliubbo@gmail.com>
Signed-off-by: NSonic Zhang <sonic.adi@gmail.com>

Board and config header files for bf609-ezkit support.
Signed-off-by: NBob Liu <lliubbo@gmail.com>
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NSonic Zhang <sonic.adi@gmail.com>

Signed-off-by: NBob Liu <lliubbo@gmail.com>
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NSonic Zhang <sonic.adi@gmail.com>

BF60x support 16K, 64K, 16M and 64M cplb pages, this patch add support for them.
So that bf609-ezkit can use it's 128M memory.
Signed-off-by: NBob Liu <lliubbo@gmail.com>
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NSonic Zhang <sonic.adi@gmail.com>

Add dma support for bf60x.
Signed-off-by: NBob Liu <lliubbo@gmail.com>
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NSonic Zhang <sonic.adi@gmail.com>

Add serial for bf60x.
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NBob Liu <lliubbo@gmail.com>
Signed-off-by: NSonic Zhang <sonic.adi@gmail.com>

Set up clocks, DDR controller, Nor flash controller, reboot,
serial port. Add new SPI boot modes.
Signed-off-by: NBob Liu <lliubbo@gmail.com>
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NSonic Zhang <sonic.adi@gmail.com>