tree a98e3d91a0f435ca0e331c43bf2625943a9bcd9d
parent 4448d0c702c07277190be1d5f1d3f256a960d303
author Marek Vasut <marex@denx.de> 1649376559 +0200
committer Tom Rini <trini@konsulko.com> 1650467679 -0400

image: fdt: Fix DT relocation handling with multiple DRAM banks with gap

The current implementation of boot_relocate_fdt() places DT at the
highest usable DRAM address, which is calculated as:
  env_get_bootm_low() + env_get_bootm_mapsize()
which by default becomes gd->ram_base + gd->ram_size.

Systems like i.MX53 can have multiple DRAM banks with gap between them,
e.g. have DRAM at 0x70000000-0x8fffffff and 0xb0000000-0xcfffffff , so
for them the calculated highest DRAM address is 0xafffffff, which is
exactly in the gap and thus not usable.

Fix this by iterating over all DRAM banks and tracking the remaining
amount of the total mapping size obtained from env_get_bootm_mapsize().
Limit the maximum LMB area size to each bank, to avoid using nonexistent
DRAM.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>