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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/arm/mach-mvebu/pmsu_ll.S
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/arm/mach-mvebu/pmsu_ll.S')
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1 files changed, 75 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-mvebu/pmsu_ll.S b/kernel/arch/arm/mach-mvebu/pmsu_ll.S
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+++ b/kernel/arch/arm/mach-mvebu/pmsu_ll.S
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+/*
+ * Copyright (C) 2014 Marvell
+ *
+ * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+ * Gregory Clement <gregory.clement@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+
+ENTRY(armada_38x_scu_power_up)
+ mrc p15, 4, r1, c15, c0 @ get SCU base address
+ orr r1, r1, #0x8 @ SCU CPU Power Status Register
+ mrc 15, 0, r0, cr0, cr0, 5 @ get the CPU ID
+ and r0, r0, #15
+ add r1, r1, r0
+ mov r0, #0x0
+ strb r0, [r1] @ switch SCU power state to Normal mode
+ ret lr
+ENDPROC(armada_38x_scu_power_up)
+
+/*
+ * This is the entry point through which CPUs exiting cpuidle deep
+ * idle state are going.
+ */
+ENTRY(armada_370_xp_cpu_resume)
+ARM_BE8(setend be ) @ go BE8 if entered LE
+ /*
+ * Disable the MMU that might have been enabled in BootROM if
+ * this code is used in the resume path of a suspend/resume
+ * cycle.
+ */
+ mrc p15, 0, r1, c1, c0, 0
+ bic r1, #1
+ mcr p15, 0, r1, c1, c0, 0
+ bl ll_add_cpu_to_smp_group
+ bl ll_enable_coherency
+ b cpu_resume
+ENDPROC(armada_370_xp_cpu_resume)
+
+ENTRY(armada_38x_cpu_resume)
+ /* do we need it for Armada 38x*/
+ARM_BE8(setend be ) @ go BE8 if entered LE
+ bl v7_invalidate_l1
+ bl armada_38x_scu_power_up
+ b cpu_resume
+ENDPROC(armada_38x_cpu_resume)
+
+.global mvebu_boot_wa_start
+.global mvebu_boot_wa_end
+
+/* The following code will be executed from SRAM */
+ENTRY(mvebu_boot_wa_start)
+mvebu_boot_wa_start:
+ARM_BE8(setend be)
+ adr r0, 1f
+ ldr r0, [r0] @ load the address of the
+ @ resume register
+ ldr r0, [r0] @ load the value in the
+ @ resume register
+ARM_BE8(rev r0, r0) @ the value is stored LE
+ mov pc, r0 @ jump to this value
+/*
+ * the last word of this piece of code will be filled by the physical
+ * address of the boot address register just after being copied in SRAM
+ */
+1:
+ .long .
+mvebu_boot_wa_end:
+ENDPROC(mvebu_boot_wa_end)