[U-Boot] [PATCH 0/2]: arm: Provide lowlevel_init C function wrapper for v7

[Allen Martin <amartin@nvidia.com>]

On Thu, Aug 09, 2012 at 09:01:54AM -0700, Tom Rini wrote:
> Hey all,
> 
> As Allen Martin noted, on tegra platforms a bug is exposed when using
> certain toolchains that currently calls to lowlevel_init must be calls
> to another assembly function as the stack is not explicitly setup /
> saved and thus register corruption can occur.  Over in TI-land Aneesh V
> wrote a lowlevel_init that sets up the stack and calls s_init which is a
> C function that does what lowlevel_init does on other platforms.  The
> code is generic to at least v7, so this series moves it to
> arch/arm/cpu/armv7.  The initial version of the code made use of
> LOW_LEVEL_SRAM_STACK as the stack to be setup.  This define is
> essentially another name for CONFIG_SYS_INIT_SP_ADDR without taking
> GENERATED_GBL_DATA_SIZE into consideration.  So we switch to that
> instead.  Finally, Wolfgang question me as to if the stack really only
> needed the alignment that we had been giving it.  To be safe, I grabbed
> the alignmnet that we do when setting up the initial stack for real and
> placed it into lowlevel_init as well.
> 
> Tested on AM335x GP EVM and OMAP4 Pandaboard ES2.
> 

Converted tegra to use the new lowlevel_init wrapper and tested on
seaboard.  Verified it works with the previously failing CodeSourcery
2011.09-70 toolchain.

I'll respin my tegra SPL series to depend on these.

-Allen


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