ARM: keystone2: configs: Move SP to end of u-boot section
authorLokesh Vutla <lokeshvutla@ti.com>
Mon, 17 Aug 2015 14:24:48 +0000 (19:54 +0530)
committerLothar Waßmann <LW@KARO-electronics.de>
Thu, 10 Sep 2015 09:29:49 +0000 (11:29 +0200)
commitaebedee8317f83e743f328d388616439c0d7303a
tree12e16c57bbb2f70e28a0e170a46b344330dc1bf3
parente8be47969fca034efa9c9f1e5717992b67e6fdfe
ARM: keystone2: configs: Move SP to end of u-boot section

Currently u-boot stack is defined at the beginning of MSMC RAM.
This is a problem for uart boot mode as ROM downloads directly to
starting of MSMC RAM.
Fixing it by moving stack to the end of u-boot section and shifting
SYS_TEXT_BASE to the start of MSMC RAM.
Updated division of MSMC RAM is shown below:
-----------------------------------------
| | | |
| U-Boot text |U-Boot | SPL text |
| download | Stack | Download + |
| | | SPL_BSS + |
| | | SPL_STACK |
-----------------------------------------
[1] [2] [3] [4]

[1] SYS_TEXT_BASE (Start of MSMC RAM)
[2] SPL_TEXT_BASE - GBL_DATA_SIZE
[3] SPL_TEXT_BASE
[4] END of SPL

[1] + [2] is at least 1M on all platforms, so no chance of overlap.

Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
include/configs/ti_armv7_keystone2.h