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On 10/18/12 13:45, Stephen Warren wrote:
On 10/18/2012 10:27 AM, Tom Rini wrote:
On Tue, Oct 16, 2012 at 03:50:08PM -0600, Stephen Warren wrote:
From: Stephen Warren swarren@nvidia.com
If the SPL extends beyond CONFIG_SYS_TEXT_BASE, then it will likely corrupt the main U-Boot binary during execution, causing the main U-Boot binary to fail. Check for this situation during the build to avoid extremely annoying and hard-to-find bugs. Note that checking the size of u-boot-spl.bin is not enough, since BSS size doesn't affect the size of u-boot-spl.bin.
Signed-off-by: Stephen Warren swarren@nvidia.com
Can't you do this in the linker script like we do for other SPL size constraints? Or am I just mis-reading how this is unique and that link-time check can't be used? Thanks!
Ah, there aren't any such checks in the linker script I looked at, so I wasn't aware of this capability. I found the following in a different linker script:
ASSERT(__bss_end__ <= 0xfff01000, "NAND bootstrap too big");
I agree using that technique would make sense; I'll try it out.
There's a few different ones, sadly. grep around on CONFIG_SPL_MAX_SIZE.
- -- Tom