summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/kernel/cpu_setup_fsl_booke.S
blob: dddba3e942606e138a467c3de8bd3841d482cb30 (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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
/*
 * 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

/*
 * FIXME - we haven't yet done testing to determine a reasonable default
 * value for PW20_WAIT_IDLE_BIT.
 */
#define PW20_WAIT_IDLE_BIT		50 /* 1ms, TB frequency is 41.66MHZ */
_GLOBAL(setup_pw20_idle)
	mfspr	r3, SPRN_PWRMGTCR0

	/* Set PW20_WAIT bit, enable pw20 state*/
	ori	r3, r3, PWRMGTCR0_PW20_WAIT
	li	r11, PW20_WAIT_IDLE_BIT

	/* Set Automatic PW20 Core Idle Count */
	rlwimi	r3, r11, PWRMGTCR0_PW20_ENT_SHIFT, PWRMGTCR0_PW20_ENT

	mtspr	SPRN_PWRMGTCR0, r3

	blr

/*
 * FIXME - we haven't yet done testing to determine a reasonable default
 * value for AV_WAIT_IDLE_BIT.
 */
#define AV_WAIT_IDLE_BIT		50 /* 1ms, TB frequency is 41.66MHZ */
_GLOBAL(setup_altivec_idle)
	mfspr	r3, SPRN_PWRMGTCR0

	/* Enable Altivec Idle */
	oris	r3, r3, PWRMGTCR0_AV_IDLE_PD_EN@h
	li	r11, AV_WAIT_IDLE_BIT

	/* Set Automatic AltiVec Idle Count */
	rlwimi	r3, r11, PWRMGTCR0_AV_IDLE_CNT_SHIFT, PWRMGTCR0_AV_IDLE_CNT

	mtspr	SPRN_PWRMGTCR0, r3

	blr

#ifdef CONFIG_PPC_E500MC
_GLOBAL(__setup_cpu_e6500)
	mflr	r6
#ifdef CONFIG_PPC64
	bl	setup_altivec_ivors
	/* Touch IVOR42 only if the CPU supports E.HV category */
	mfspr	r10,SPRN_MMUCFG
	rlwinm.	r10,r10,0,MMUCFG_LPIDSIZE
	beq	1f
	bl	setup_lrat_ivor
1:
#endif
	bl	setup_pw20_idle
	bl	setup_altivec_idle
	bl	__setup_cpu_e5500
	mtlr	r6
	blr
#endif /* CONFIG_PPC_E500MC */

#ifdef CONFIG_PPC32
#ifdef CONFIG_E200
_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
#endif /* CONFIG_E200 */

#ifdef CONFIG_E500
#ifndef CONFIG_PPC_E500MC
_GLOBAL(__setup_cpu_e500v1)
_GLOBAL(__setup_cpu_e500v2)
	mflr	r4
	bl	__e500_icache_setup
	bl	__e500_dcache_setup
	bl	__setup_e500_ivors
#if defined(CONFIG_FSL_RIO) || defined(CONFIG_FSL_PCI)
	/* Ensure that RFXE is set */
	mfspr	r3,SPRN_HID1
	oris	r3,r3,HID1_RFXE@h
	mtspr	SPRN_HID1,r3
#endif
	mtlr	r4
	blr
#else /* CONFIG_PPC_E500MC */
_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 /* CONFIG_PPC_E500MC */
#endif /* CONFIG_E500 */
#endif /* CONFIG_PPC32 */

#ifdef CONFIG_PPC_BOOK3E_64
_GLOBAL(__restore_cpu_e6500)
	mflr	r5
	bl	setup_altivec_ivors
	/* Touch IVOR42 only if the CPU supports E.HV category */
	mfspr	r10,SPRN_MMUCFG
	rlwinm.	r10,r10,0,MMUCFG_LPIDSIZE
	beq	1f
	bl	setup_lrat_ivor
1:
	bl	setup_pw20_idle
	bl	setup_altivec_idle
	bl	__restore_cpu_e5500
	mtlr	r5
	blr

_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
OpenPOWER on IntegriCloud