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38 lines
1.5 KiB
Diff
38 lines
1.5 KiB
Diff
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From 976f39b139cdd06a88a5aadd8202b0c30cac9cda Mon Sep 17 00:00:00 2001
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From: Florian Fainelli <florian@openwrt.org>
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Date: Wed, 17 Jul 2013 17:56:31 +0000
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Subject: [PATCH] MIPS: BMIPS: Fix thinko to release slave TP from reset
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Commit 4df715aa ["MIPS: BMIPS: support booting from physical CPU other
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than 0"] introduced a thinko which will prevents slave CPUs from being
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released from reset on systems where we boot from TP0. The problem is
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that we are checking whether the slave CPU logical CPU map is 0, which
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is never true for systems booting from TP0, so we do not release the
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slave TP from reset and we are just stuck. Fix this by properly checking
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that the CPU we intend to boot really is the physical slave CPU (logical
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and physical value being 1).
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Signed-off-by: Florian Fainelli <florian@openwrt.org>
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Cc: linux-mips@linux-mips.org
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Cc: blogic@openwrt.org
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Cc: jogo@openwrt.org
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Cc: cernekee@gmail.com
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Cc: Florian Fainelli <florian@openwrt.org>
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Patchwork: https://patchwork.linux-mips.org/patch/5598/
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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---
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arch/mips/kernel/smp-bmips.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/arch/mips/kernel/smp-bmips.c
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+++ b/arch/mips/kernel/smp-bmips.c
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@@ -173,7 +173,7 @@ static void bmips_boot_secondary(int cpu
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else {
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#if defined(CONFIG_CPU_BMIPS4350) || defined(CONFIG_CPU_BMIPS4380)
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/* Reset slave TP1 if booting from TP0 */
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- if (cpu_logical_map(cpu) == 0)
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+ if (cpu_logical_map(cpu) == 1)
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set_c0_brcm_cmt_ctrl(0x01);
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#elif defined(CONFIG_CPU_BMIPS5000)
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if (cpu & 0x01)
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