[U-Boot] OMAP3 SPL Overflow

[Lokesh Vutla]

On Sunday 21 August 2016 06:15 PM, Tom Rini wrote:
> On Sun, Aug 21, 2016 at 06:29:42AM -0500, Adam Ford wrote:
> 
>> Using Git bisect, it appears to me that
>> a78cd8613204188991c192b8dae2de0aae3b1722 makes "region `.sram'
>> overflowed by 888 bytes" when I compile for omap3_logic.  As I move
>> forward through the git commits that overflow amount is continuing to
>> grow.
>>
>> Does anyone else with an OMAP3 have this issue?
> 
> The best solution I have for this at current is a patch that re-works
> how we use the download image area and compacts the size we reserve for
> the scratch area to be still much larger than required.

I agree here. Right now the scratch addr space is 4KB. We can reduce it
to 1KB. Below is the patch that is being used in ti-u-boot to solve this
issue.

-----------8<------------------8<-------------------------------------

>From b9fc60d79ea554aff94a208e18b089bf89b2d2ed Mon Sep 17 00:00:00 2001
From: Lokesh Vutla <lokeshvutla at ti.com>
Date: Tue, 26 Jul 2016 11:26:06 +0530
Subject: [PATCH] ARM: OMAP3: Reduce the size of SRAM scratch addr space

OMAP3 support only SPL of size <= 60KB. In such tight scenarios it is
not advisable to have scratch addr space of size 4KB. So, reduce the
size to 1KB.

Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
---
 arch/arm/include/asm/arch-omap3/omap.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/arch-omap3/omap.h
b/arch/arm/include/asm/arch-omap3/omap.h
index bc0e02a..116d863 100644
--- a/arch/arm/include/asm/arch-omap3/omap.h
+++ b/arch/arm/include/asm/arch-omap3/omap.h
@@ -145,7 +145,7 @@ struct gpio {

 #define NON_SECURE_SRAM_START		0x40208000 /* Works for GP & EMU */
 #define NON_SECURE_SRAM_END		0x40210000
-#define SRAM_SCRATCH_SPACE_ADDR		0x4020E000
+#define SRAM_SCRATCH_SPACE_ADDR		0x4020EC00

 #define LOW_LEVEL_SRAM_STACK		0x4020FFFC

-- 
2.9.3