This C function should be used to do the early memory layout and init. This
is beyond my powers, so just add a TODO for the maintainer.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Michal Simek <michal.simek@xilinx.com>

This patch has some parts connected together:
- Use _gd in bss section which is automatically cleared
  Location at SPL_MALLOC_END wasn't cleared at all
- Use MALLOC_F_LEN(early alloc) instead of FULL MALLOC
  (mem_malloc_init is not called at all)
- Simplify malloc and stack init.
  At the end of SPL addr is malloc area and below is stack

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Create space for dm_init where calloc is called
and malloc_base has to be initialized.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Because it is not compatible with DM where
malloc_base has to be available early and init
has to be done in ASM.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Remove one instruction in the loop which speedup
code copying.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Compile code with -fPIC to get GOT. Do not build SPL
with fPIC because it increasing SPL size for nothing.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Setup gd from ASM to be availalbe for board_init_r.
Setting it up in spl_board_init is too late when
MALLOC is used.
Space for gd is located behind MALLOC area at the end of BRAM.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

It is not used at all that's why remove it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Ensure that stack didn't rewrite important part
of u-boot.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Enable hardware exception by default to be able to
handle it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>