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| author | Victor Kamensky <victor.kamensky@linaro.org> | 2013-10-26 13:10:25 -0700 |
|---|---|---|
| committer | Victor Kamensky <victor.kamensky@linaro.org> | 2013-10-26 13:10:25 -0700 |
| commit | b6259f63fae44ba60696464e941bf098bba7d3af (patch) | |
| tree | 7b1acc02317bb36f754064702e3bf5616f322a1e | |
| parent | a210a16ad78248b8e6af0d61a79eed74b4bc93c0 (diff) | |
ARM: __fixup_smp read of SCU config should do byteswap in BE casetracking-be_arm-ll-20131120.0tracking-be_arm-ll-20131119.0tracking-be_arm-ll-20131115.0tracking-be_arm-ll-20131112.0tracking-be_arm-ll-20131107.0tracking-be_arm-ll-20131031.1tracking-be_arm-ll-20131031.0
Commit "bc41b8724f24b9a27d1dcc6c974b8f686b38d554 ARM: 7846/1:
Update SMP_ON_UP code to detect A9MPCore with 1 CPU devices"
added read of SCU config register into __fixup_smp function.
Such read should be followed by byteswap, if kernel runs in
BE mode.
Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
| -rw-r--r-- | arch/arm/kernel/head.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 3d27801b0140..7839739c1216 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -508,6 +508,7 @@ __fixup_smp: teq r0, #0x0 @ '0' on actual UP A9 hardware beq __fixup_smp_on_up @ So its an A9 UP ldr r0, [r0, #4] @ read SCU Config +ARM_BE8(rev r0, r0) @ byteswap if big endian and r0, r0, #0x3 @ number of CPUs teq r0, #0x0 @ is 1? movne pc, lr |