1/*
2 * Copyright (C) 2014 Marvell
3 *
4 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
5 * Gregory Clement <gregory.clement@free-electrons.com>
6 *
7 * This file is licensed under the terms of the GNU General Public
8 * License version 2.  This program is licensed "as is" without any
9 * warranty of any kind, whether express or implied.
10 */
11
12#include <linux/linkage.h>
13#include <asm/assembler.h>
14
15
16ENTRY(armada_38x_scu_power_up)
17	mrc     p15, 4, r1, c15, c0	@ get SCU base address
18	orr	r1, r1, #0x8		@ SCU CPU Power Status Register
19	mrc	15, 0, r0, cr0, cr0, 5	@ get the CPU ID
20	and	r0, r0, #15
21	add	r1, r1, r0
22	mov	r0, #0x0
23	strb	r0, [r1]		@ switch SCU power state to Normal mode
24	ret	lr
25ENDPROC(armada_38x_scu_power_up)
26
27/*
28 * This is the entry point through which CPUs exiting cpuidle deep
29 * idle state are going.
30 */
31ENTRY(armada_370_xp_cpu_resume)
32ARM_BE8(setend	be )			@ go BE8 if entered LE
33	/*
34	 * Disable the MMU that might have been enabled in BootROM if
35	 * this code is used in the resume path of a suspend/resume
36	 * cycle.
37	 */
38	mrc	p15, 0, r1, c1, c0, 0
39	bic	r1, #1
40	mcr	p15, 0, r1, c1, c0, 0
41	bl	ll_add_cpu_to_smp_group
42	bl	ll_enable_coherency
43	b	cpu_resume
44ENDPROC(armada_370_xp_cpu_resume)
45
46ENTRY(armada_38x_cpu_resume)
47	/* do we need it for Armada 38x*/
48ARM_BE8(setend	be )			@ go BE8 if entered LE
49	bl	v7_invalidate_l1
50	bl	armada_38x_scu_power_up
51	b	cpu_resume
52ENDPROC(armada_38x_cpu_resume)
53
54.global mvebu_boot_wa_start
55.global mvebu_boot_wa_end
56
57/* The following code will be executed from SRAM */
58ENTRY(mvebu_boot_wa_start)
59mvebu_boot_wa_start:
60ARM_BE8(setend	be)
61	adr	r0, 1f
62	ldr	r0, [r0]		@ load the address of the
63					@ resume register
64	ldr	r0, [r0]		@ load the value in the
65					@ resume register
66ARM_BE8(rev	r0, r0)			@ the value is stored LE
67	mov	pc, r0			@ jump to this value
68/*
69 * the last word of this piece of code will be filled by the physical
70 * address of the boot address register just after being copied in SRAM
71 */
721:
73	.long   .
74mvebu_boot_wa_end:
75ENDPROC(mvebu_boot_wa_end)
76