Hi Benoît, On Wed, 3 Sep 2014 23:32:33 +0200, Benoît Thébaudeau <benoit.thebaudeau....@gmail.com> wrote:
> Some boards, like mx31pdk and tx25, require the beginning of the SPL > code to be position-independent. For these two boards, this is because > they use the i.MX external NAND boot, which starts by executing the > first NAND Flash page from the NFC page buffer. The SPL then needs to > copy itself to its actual link address in order to free the NFC page > buffer and use it to load the non-SPL image from Flash before running > it. This means that the SPL runtime address differs from its link > address between the reset and the initial copy performed by > board_init_f(), so this part of the SPL binary must be > position-independent. > > This requirement was broken by commit 41623c9 'arm: move exception > handling out of start.S files', which used an absolute address to branch > to the reset routine. This new commit restores the original behavior, > which just performed a relative branch. This fixes the boot of mx31pdk > and tx25. > > Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau....@gmail.com> > Reported-by: Helmut Raiger <helmut.rai...@hale.at> > Cc: Albert Aribaud <albert.u.b...@aribaud.net> > Cc: Magnus Lilja <lilja.mag...@gmail.com> > Cc: John Rigby <jcri...@gmail.com> > --- > arch/arm/lib/vectors.S | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/arch/arm/lib/vectors.S b/arch/arm/lib/vectors.S > index 493f337..843b18f 100644 > --- a/arch/arm/lib/vectors.S > +++ b/arch/arm/lib/vectors.S > @@ -50,7 +50,7 @@ > #endif > > _start: > - ldr pc, _reset > + b reset > ldr pc, _undefined_instruction > ldr pc, _software_interrupt > ldr pc, _prefetch_abort > @@ -77,7 +77,6 @@ _start: > .globl _irq > .globl _fiq > > -_reset: .word reset > _undefined_instruction: .word undefined_instruction > _software_interrupt: .word software_interrupt > _prefetch_abort: .word prefetch_abort Applied (as a bug fix) to u-boot-arm/master, thanks! Amicalement, -- Albert. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
