e500 , in head_fsl_booke.S
We know,the first two steps are:
1) invalidate all entries except the entry we are in
2) setup a temp mapping and jump to it respectively:
tlbwe
bl 1f
1: mflr r9
rlwimi r7,r9,0,20,31
addi r7, r7,24
mtspr SPRN_SRR0,r7
mtspr SPRN_SRR1,r6
rfi
/* jump to 0-4k .
question1: Why not this 'rfi' did not caused jumping into
4k-8k , or 10k-14k , etc ? */
li r6,0
question2: We know that, it is not allowed the two entrys having the
same EPN value,so, when setting up a temp entry which ranged from
0-4k, is it possible that , this
range(0-4k) may conflit with the entry we are executed in now?
Thx in advance.
regards,
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