aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/kernel/cpu_setup_fsl_booke.S
blob: dcd881937f7a9217c2c6b7843d218a1d6b777970 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
/*
 * This file contains low level CPU setup functions.
 * Kumar Gala <galak@kernel.crashing.org>
 * Copyright 2009 Freescale Semiconductor, Inc.
 *
 * Based on cpu_setup_6xx code by
 * Benjamin Herrenschmidt <benh@kernel.crashing.org>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 *
 */

#include <asm/processor.h>
#include <asm/cputable.h>
#include <asm/ppc_asm.h>
#include <asm/mmu-book3e.h>
#include <asm/asm-offsets.h>

_GLOBAL(__e500_icache_setup)
	mfspr	r0, SPRN_L1CSR1
	andi.	r3, r0, L1CSR1_ICE
	bnelr				/* Already enabled */
	oris	r0, r0, L1CSR1_CPE@h
	ori	r0, r0, (L1CSR1_ICFI | L1CSR1_ICLFR |  L1CSR1_ICE)
	mtspr	SPRN_L1CSR1, r0		/* Enable I-Cache */
	isync
	blr

_GLOBAL(__e500_dcache_setup)
	mfspr	r0, SPRN_L1CSR0
	andi.	r3, r0, L1CSR0_DCE
	bnelr				/* Already enabled */
	msync
	isync
	li	r0, 0
	mtspr	SPRN_L1CSR0, r0		/* Disable */
	msync
	isync
	li	r0, (L1CSR0_DCFI | L1CSR0_CLFC)
	mtspr	SPRN_L1CSR0, r0		/* Invalidate */
	isync
1:	mfspr	r0, SPRN_L1CSR0
	andi.	r3, r0, L1CSR0_CLFC
	bne+	1b			/* Wait for lock bits reset */
	oris	r0, r0, L1CSR0_CPE@h
	ori	r0, r0, L1CSR0_DCE
	msync
	isync
	mtspr	SPRN_L1CSR0, r0		/* Enable */
	isync
	blr

#ifdef CONFIG_PPC32
_GLOBAL(__setup_cpu_e200)
	/* enable dedicated debug exception handling resources (Debug APU) */
	mfspr	r3,SPRN_HID0
	ori	r3,r3,HID0_DAPUEN@l
	mtspr	SPRN_HID0,r3
	b	__setup_e200_ivors
_GLOBAL(__setup_cpu_e500v1)
_GLOBAL(__setup_cpu_e500v2)
	mflr	r4
	bl	__e500_icache_setup
	bl	__e500_dcache_setup
	bl	__setup_e500_ivors
#ifdef CONFIG_FSL_RIO
	/* Ensure that RFXE is set */
	mfspr	r3,SPRN_HID1
	oris	r3,r3,HID1_RFXE@h
	mtspr	SPRN_HID1,r3
#endif
	mtlr	r4
	blr
_GLOBAL(__setup_cpu_e500mc)
_GLOBAL(__setup_cpu_e5500)
	mflr	r5
	bl	__e500_icache_setup
	bl	__e500_dcache_setup
	bl	__setup_e500mc_ivors
	/*
	 * We only want to touch IVOR38-41 if we're running on hardware
	 * that supports category E.HV.  The architectural way to determine
	 * this is MMUCFG[LPIDSIZE].
	 */
	mfspr	r3, SPRN_MMUCFG
	rlwinm.	r3, r3, 0, MMUCFG_LPIDSIZE
	beq	1f
	bl	__setup_ehv_ivors
	b	2f
1:
	lwz	r3, CPU_SPEC_FEATURES(r4)
	/* We need this check as cpu_setup is also called for
	 * the secondary cores. So, if we have already cleared
	 * the feature on the primary core, avoid doing it on the
	 * secondary core.
	 */
	andis.	r6, r3, CPU_FTR_EMB_HV@h
	beq	2f
	rlwinm	r3, r3, 0, ~CPU_FTR_EMB_HV
	stw	r3, CPU_SPEC_FEATURES(r4)
2:
	mtlr	r5
	blr
#endif

#ifdef CONFIG_PPC_BOOK3E_64
_GLOBAL(__restore_cpu_e5500)
	mflr	r4
	bl	__e500_icache_setup
	bl	__e500_dcache_setup
	bl	.__setup_base_ivors
	bl	.setup_perfmon_ivor
	bl	.setup_doorbell_ivors
	/*
	 * We only want to touch IVOR38-41 if we're running on hardware
	 * that supports category E.HV.  The architectural way to determine
	 * this is MMUCFG[LPIDSIZE].
	 */
	mfspr	r10,SPRN_MMUCFG
	rlwinm.	r10,r10,0,MMUCFG_LPIDSIZE
	beq	1f
	bl	.setup_ehv_ivors
1:
	mtlr	r4
	blr

_GLOBAL(__setup_cpu_e5500)
	mflr	r5
	bl	__e500_icache_setup
	bl	__e500_dcache_setup
	bl	.__setup_base_ivors
	bl	.setup_perfmon_ivor
	bl	.setup_doorbell_ivors
	/*
	 * We only want to touch IVOR38-41 if we're running on hardware
	 * that supports category E.HV.  The architectural way to determine
	 * this is MMUCFG[LPIDSIZE].
	 */
	mfspr	r10,SPRN_MMUCFG
	rlwinm.	r10,r10,0,MMUCFG_LPIDSIZE
	beq	1f
	bl	.setup_ehv_ivors
	b	2f
1:
	ld	r10,CPU_SPEC_FEATURES(r4)
	LOAD_REG_IMMEDIATE(r9,CPU_FTR_EMB_HV)
	andc	r10,r10,r9
	std	r10,CPU_SPEC_FEATURES(r4)
2:
	mtlr	r5
	blr
#endif