On 07/11/2014 09:56 AM, Magnus Lilja wrote:
Hi
On 8 July 2014 10:05, Helmut Raiger helmut.raiger@hale.at wrote:
I meant, that the SPL is now doing the RAM init and copying of the SPL code correctly. RAM is working, the SPL code is at 0x87dc0000 after that (CRCed it via JTAG). I could not track it further (I have very limited development time right now ... repeating myself).
After all I need to debug further. If someone could test the current state on the mx31pdk, this still would be great. Just to rule out any other board specific issues.
I can confirm that a recent U-boot (I think it was 2014.04) did not work for me on mx31pdk, I think I had to go back to 2013.04 to get a working U-boot.
So I don't think it's a board specific issue.
Regards, Magnus
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Hi,
thx Magnus for the test, could you possibly change the few lines of code and test again:
diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S index 1cfcca9..53bde12 100644 --- a/arch/arm/cpu/arm1136/start.S +++ b/arch/arm/cpu/arm1136/start.S @@ -91,4 +91,9 @@ cpu_init_crit: bl lowlevel_init /* go setup pll,mux,memory */ mov lr, ip /* restore link */ mov pc, lr /* back to my caller */ + + nop + nop + nop + #endif /* CONFIG_SKIP_LOWLEVEL_INIT */ diff --git a/arch/arm/lib/vectors.S b/arch/arm/lib/vectors.S index d68cc47..8c0e3c1 100644 --- a/arch/arm/lib/vectors.S +++ b/arch/arm/lib/vectors.S @@ -50,7 +50,8 @@ _start: #endif
_start: - ldr pc, _reset + /* be position independent if SPL is linked at different location */ + b reset ldr pc, _undefined_instruction ldr pc, _software_interrupt ldr pc, _prefetch_abort
This fixes the SPL, in a later test I had to another nop and I still have no explanation why.
Again thanks for the support. Helmut
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