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author | Jiri Kosina <jkosina@suse.cz> | 2011-02-15 10:24:31 +0100 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2011-02-15 10:24:31 +0100 |
commit | 0a9d59a2461477bd9ed143c01af9df3f8f00fa81 (patch) | |
tree | df997d1cfb0786427a0df1fbd6f0640fa4248cf4 /arch/arm/kernel/head.S | |
parent | a23ce6da9677d245aa0aadc99f4197030350ab54 (diff) | |
parent | 795abaf1e4e188c4171e3cd3dbb11a9fcacaf505 (diff) | |
download | op-kernel-dev-0a9d59a2461477bd9ed143c01af9df3f8f00fa81.zip op-kernel-dev-0a9d59a2461477bd9ed143c01af9df3f8f00fa81.tar.gz |
Merge branch 'master' into for-next
Diffstat (limited to 'arch/arm/kernel/head.S')
-rw-r--r-- | arch/arm/kernel/head.S | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index f17d9a0..c0225da 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -392,24 +392,22 @@ ENDPROC(__turn_mmu_on) #ifdef CONFIG_SMP_ON_UP __fixup_smp: - mov r4, #0x00070000 - orr r3, r4, #0xff000000 @ mask 0xff070000 - orr r4, r4, #0x41000000 @ val 0x41070000 - and r0, r9, r3 - teq r0, r4 @ ARM CPU and ARMv6/v7? + and r3, r9, #0x000f0000 @ architecture version + teq r3, #0x000f0000 @ CPU ID supported? bne __fixup_smp_on_up @ no, assume UP - orr r3, r3, #0x0000ff00 - orr r3, r3, #0x000000f0 @ mask 0xff07fff0 + bic r3, r9, #0x00ff0000 + bic r3, r3, #0x0000000f @ mask 0xff00fff0 + mov r4, #0x41000000 orr r4, r4, #0x0000b000 - orr r4, r4, #0x00000020 @ val 0x4107b020 - and r0, r9, r3 - teq r0, r4 @ ARM 11MPCore? + orr r4, r4, #0x00000020 @ val 0x4100b020 + teq r3, r4 @ ARM 11MPCore? moveq pc, lr @ yes, assume SMP mrc p15, 0, r0, c0, c0, 5 @ read MPIDR - tst r0, #1 << 31 - movne pc, lr @ bit 31 => SMP + and r0, r0, #0xc0000000 @ multiprocessing extensions and + teq r0, #0x80000000 @ not part of a uniprocessor system? + moveq pc, lr @ yes, assume SMP __fixup_smp_on_up: adr r0, 1f |