[PATCH 0/2] Add generic function for computing ram_top

[Sughosh Ganu]

The board_get_usable_ram_top() function is used by boards to compute
uppermost address of RAM(ram_top) that is to be used by U-Boot -- this
need not be the highest RAM address of the platform. This computation
happens before U-Boot relocates to its final destination address in
RAM. Certain platforms, like the Xilinx boards were computing the
ram_top value in an indirect manner, through some LMB API's. Thus it
is no longer possible to use these LMB API's to compute the ram_top,
as the LMB module gets initialised only after relocation, and the heap
memory has been set up. Add generic functionality to compute the value
of ram_top which can be used by platforms.


Sughosh Ganu (2):
  common: memtop: add logic to detect ram_top
  xilinx: use get_mem_top() to compute ram_top

 board/xilinx/common/board.c |  25 +++++
 common/Makefile             |   1 +
 common/memtop.c             | 186 ++++++++++++++++++++++++++++++++++++
 include/memtop.h            |  22 +++++
 4 files changed, 234 insertions(+)
 create mode 100644 common/memtop.c
 create mode 100644 include/memtop.h

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2.34.1