AnsweredAssumed Answered

kernel enable mmu

Question asked by li fusong on Apr 24, 2015
Latest reply on Apr 25, 2015 by li fusong

Dear sir.

  our board use imx6qsabresd  and bsp is 4.4.3_r1

when boot into kernel and enable mmu ,will case our board lose power

ENTRY(__turn_mmu_on)

  b __error_Debug  //board will lose power after show this debug info.can't see the next debug info.

  mov r0, r0

  instr_sync

  mcr p15, 0, r0, c1, c0, 0 @ write control reg

  mrc p15, 0, r3, c0, c0, 0 @ read id reg

  instr_sync

  mov r3, r3

  mov r3, r13

  mov pc, r3

  b __error_Debug

__turn_mmu_on_end:

ENDPROC(__turn_mmu_on)

  .popsection

 

who can help me ? thanks.

Outcomes