Re: [PATCH 1/1] ARM: pxa168: fix corrected reset vector

From: Eric Miao
Date: Tue Aug 31 2010 - 02:04:38 EST


On Tue, Aug 31, 2010 at 2:02 PM, Mark F. Brown <mark.brown314@xxxxxxxxx> wrote:
> On Tue, Aug 31, 2010 at 1:48 AM, Eric Miao <eric.y.miao@xxxxxxxxx> wrote:
>> On Thu, Aug 26, 2010 at 5:07 PM, Mark F. Brown <mark.brown314@xxxxxxxxx> wrote:
>>> Signed-off-by: Mark F. Brown <mark.brown314@xxxxxxxxx>
>>> ---
>>> Âarch/arm/mach-mmp/include/mach/system.h | Â Â2 +-
>>> Â1 files changed, 1 insertions(+), 1 deletions(-)
>>>
>>> diff --git a/arch/arm/mach-mmp/include/mach/system.h b/arch/arm/mach-mmp/include/mach/system.h
>>> index 4f5b0e0..926e9c0 100644
>>> --- a/arch/arm/mach-mmp/include/mach/system.h
>>> +++ b/arch/arm/mach-mmp/include/mach/system.h
>>> @@ -16,6 +16,6 @@ static inline void arch_idle(void)
>>>
>>> Âstatic inline void arch_reset(char mode, const char *cmd)
>>> Â{
>>> - Â Â Â cpu_reset(0);
>>> + Â Â Â cpu_reset(0xffff0000);
>>
>> Not sure if this correct. But normally reset jump happens after we turn
>> off the MMU and so on. Ain't the BootROM starts from 0 ?
>>
>>> Â}
>>> Â#endif /* __ASM_MACH_SYSTEM_H */
>>> --
>>> 1.7.0.4
>>>
>>>
>>
>
> Eric, the boot-rom for pxa168 starts at 0xffff_0000. I am pretty sure
> about that! If you set the reset vector to 0x0 it will crash during
> reboot. I will send you xdb snapshots if you need me to.
>

OK, you are expert on this :-)

Applied to 'fix'.
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