On Jan 15, 2010, at 10:41 AM, Sebastian Andrzej Siewior wrote: > From: Sebastian Andrzej Siewior <bige...@linutronix.de> > > During boot we change the mapping a few times until we have a "defined" > mapping. During this procedure a small 4KiB mapping is created and after > that one a 64MiB. Currently the offset of the 4KiB page in that we run > is zero because the complete startup up code is in first page which > starts at RPN zero. > If the code is recycled and moved to another location then its execution > will fail because the start address in the 64 MiB mapping is computed > wrongly. It does not consider the offset to the page from the begin of > the memory. > This patch fixes this. Usually (system boot) r25 is zero so this does > not change anything unless the code is recycled. > > Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de> > --- > arch/powerpc/kernel/head_fsl_booke.S | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-)
I don't get this. Why would would we not run at KERNELBASE? - k > > diff --git a/arch/powerpc/kernel/head_fsl_booke.S > b/arch/powerpc/kernel/head_fsl_booke.S > index 7f4bd7f..799ddbe 100644 > --- a/arch/powerpc/kernel/head_fsl_booke.S > +++ b/arch/powerpc/kernel/head_fsl_booke.S > @@ -275,6 +275,7 @@ skpinv: addi r6,r6,1 /* > Increment */ > 1: mflr r9 > rlwimi r6,r9,0,20,31 > addi r6,r6,(2f - 1b) > + add r6, r6, r25 > mtspr SPRN_SRR0,r6 > mtspr SPRN_SRR1,r7 > rfi /* start execution out of TLB1[0] entry > */ > -- > 1.6.2.5 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
