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ARM: zynq: Fix location of stack and malloc areas

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The patch
"board_init: Change the logic to setup malloc_base"
(sha1: 9ac4fc8207)
breaks SPL for Zynq because it puts early alloc area on the stack which
caused that stack was decreased by CONFIG_SYS_MALLOC_F_LEN (0x400)
and there was not enough space for regular stack.

This patch changes memory layout to better utilize the last 64k OCM
block.
0xffff0000 - 0xfff1000 - Full malloc space
0xffff1000 - 0xffff300 - Stack location
0xfffff300 - CONFIG_SYS_MALLOC_F_LEN - Early malloc space
0xfffffd00 - sizeof(GD) - GD
0xfffffe00 - 0xffffffff - SoC specific boot code

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Tested-by: Moritz Fischer <moritz.fischer@ettus.com>
This commit is contained in:
Michal Simek 2015-11-23 16:27:38 +01:00
parent e92fc6df7a
commit 83b6464daa
1 changed files with 8 additions and 8 deletions
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16
include/configs/zynq-common.h
View file

@ -367,17 +367,17 @@
/* The highest 64k OCM address */
#define OCM_HIGH_ADDR 0xffff0000
/* Just define any reasonable size */
#define CONFIG_SPL_STACK_SIZE 0x1000
/* SPL stack position - and stack goes down */
#define CONFIG_SPL_STACK (OCM_HIGH_ADDR + CONFIG_SPL_STACK_SIZE)
/* On the top of OCM space */
#define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_STACK + \
GENERATED_GBL_DATA_SIZE)
#define CONFIG_SYS_SPL_MALLOC_START OCM_HIGH_ADDR
#define CONFIG_SYS_SPL_MALLOC_SIZE 0x1000
/*
* SPL stack position - and stack goes down
* 0xfffffe00 is used for putting wfi loop.
* Set it up as limit for now.
*/
#define CONFIG_SPL_STACK 0xfffffe00
/* BSS setup */
#define CONFIG_SPL_BSS_START_ADDR 0x100000
#define CONFIG_SPL_BSS_MAX_SIZE 0x100000