[PATCH 1/3] ARM Samsung: fix booting from NAND without pbl

Sascha Hauer s.hauer at pengutronix.de
Tue Feb 24 23:31:08 PST 2015


On Tue, Feb 24, 2015 at 03:53:48PM +0100, Michael Olbrich wrote:
> This was broken in 558d72dc5116 (ARM Samsung: fix booting from NAND with
> pbl). '_text' is TEXT_BASE when building without pbl and (TEXT_BASE -
> SZ_2M) when building with pbl, so this works in both cases.
> 
> Signed-off-by: Michael Olbrich <m.olbrich at pengutronix.de>
> ---
> 
> I hope I understood how this should work and this is correct now. It worked
> for me with and without pbl. Anything else that could mess this up?
> 
> Michael
> 
>  arch/arm/mach-samsung/lowlevel-s3c24x0.S | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm/mach-samsung/lowlevel-s3c24x0.S b/arch/arm/mach-samsung/lowlevel-s3c24x0.S
> index 626ad0418778..d43cdff52863 100644
> --- a/arch/arm/mach-samsung/lowlevel-s3c24x0.S
> +++ b/arch/arm/mach-samsung/lowlevel-s3c24x0.S
> @@ -15,7 +15,6 @@
>   */
>  
>  #include <config.h>
> -#include <linux/sizes.h>
>  #include <mach/s3c-iomap.h>
>  
>  	.section ".text_bare_init.s3c24x0_disable_wd","ax"
> @@ -251,7 +250,7 @@ s3c24x0_nand_boot:
>  	beq 2f
>  	mov pc, lr	/* NOR case: nothing to do here */
>  
> -2:	ldr sp, =(TEXT_BASE - SZ_2M)	/* Setup a temporary stack in SDRAM */
> +2:	ldr sp, =_text	/* Setup a temporary stack in SDRAM */
>  /*
>   * We still run at a location we are not linked to. But lets still running
>   * from the internal SRAM, this may speed up the boot
> @@ -262,7 +261,7 @@ s3c24x0_nand_boot:
>  /*
>   * Adjust the return address to the correct address in SDRAM
>   */
> -	ldr r1, =(TEXT_BASE - SZ_2M)
> +	ldr r1, =_text

Since nand_boot() copies the image to _text I believe this is the
correct address in all cases. Applied, thanks

Sascha

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