x86/efi: Enforce CONFIG_RELOCATABLE for EFI boot stub
[linux/fpc-iii.git] / arch / powerpc / kernel / cpu_setup_fsl_booke.S
blobbfb18c7290b7a13fccd520f064228b876430d807
1 /*
2  * This file contains low level CPU setup functions.
3  * Kumar Gala <galak@kernel.crashing.org>
4  * Copyright 2009 Freescale Semiconductor, Inc.
5  *
6  * Based on cpu_setup_6xx code by
7  * Benjamin Herrenschmidt <benh@kernel.crashing.org>
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * as published by the Free Software Foundation; either version
12  * 2 of the License, or (at your option) any later version.
13  *
14  */
16 #include <asm/processor.h>
17 #include <asm/cputable.h>
18 #include <asm/ppc_asm.h>
19 #include <asm/mmu-book3e.h>
20 #include <asm/asm-offsets.h>
22 _GLOBAL(__e500_icache_setup)
23         mfspr   r0, SPRN_L1CSR1
24         andi.   r3, r0, L1CSR1_ICE
25         bnelr                           /* Already enabled */
26         oris    r0, r0, L1CSR1_CPE@h
27         ori     r0, r0, (L1CSR1_ICFI | L1CSR1_ICLFR |  L1CSR1_ICE)
28         mtspr   SPRN_L1CSR1, r0         /* Enable I-Cache */
29         isync
30         blr
32 _GLOBAL(__e500_dcache_setup)
33         mfspr   r0, SPRN_L1CSR0
34         andi.   r3, r0, L1CSR0_DCE
35         bnelr                           /* Already enabled */
36         msync
37         isync
38         li      r0, 0
39         mtspr   SPRN_L1CSR0, r0         /* Disable */
40         msync
41         isync
42         li      r0, (L1CSR0_DCFI | L1CSR0_CLFC)
43         mtspr   SPRN_L1CSR0, r0         /* Invalidate */
44         isync
45 1:      mfspr   r0, SPRN_L1CSR0
46         andi.   r3, r0, L1CSR0_CLFC
47         bne+    1b                      /* Wait for lock bits reset */
48         oris    r0, r0, L1CSR0_CPE@h
49         ori     r0, r0, L1CSR0_DCE
50         msync
51         isync
52         mtspr   SPRN_L1CSR0, r0         /* Enable */
53         isync
54         blr
56 _GLOBAL(__setup_cpu_e6500)
57         mflr    r6
58 #ifdef CONFIG_PPC64
59         bl      .setup_altivec_ivors
60 #endif
61         bl      __setup_cpu_e5500
62         mtlr    r6
63         blr
65 #ifdef CONFIG_PPC32
66 _GLOBAL(__setup_cpu_e200)
67         /* enable dedicated debug exception handling resources (Debug APU) */
68         mfspr   r3,SPRN_HID0
69         ori     r3,r3,HID0_DAPUEN@l
70         mtspr   SPRN_HID0,r3
71         b       __setup_e200_ivors
72 _GLOBAL(__setup_cpu_e500v1)
73 _GLOBAL(__setup_cpu_e500v2)
74         mflr    r4
75         bl      __e500_icache_setup
76         bl      __e500_dcache_setup
77         bl      __setup_e500_ivors
78 #if defined(CONFIG_FSL_RIO) || defined(CONFIG_FSL_PCI)
79         /* Ensure that RFXE is set */
80         mfspr   r3,SPRN_HID1
81         oris    r3,r3,HID1_RFXE@h
82         mtspr   SPRN_HID1,r3
83 #endif
84         mtlr    r4
85         blr
86 _GLOBAL(__setup_cpu_e500mc)
87 _GLOBAL(__setup_cpu_e5500)
88         mflr    r5
89         bl      __e500_icache_setup
90         bl      __e500_dcache_setup
91         bl      __setup_e500mc_ivors
92         /*
93          * We only want to touch IVOR38-41 if we're running on hardware
94          * that supports category E.HV.  The architectural way to determine
95          * this is MMUCFG[LPIDSIZE].
96          */
97         mfspr   r3, SPRN_MMUCFG
98         rlwinm. r3, r3, 0, MMUCFG_LPIDSIZE
99         beq     1f
100         bl      __setup_ehv_ivors
101         b       2f
103         lwz     r3, CPU_SPEC_FEATURES(r4)
104         /* We need this check as cpu_setup is also called for
105          * the secondary cores. So, if we have already cleared
106          * the feature on the primary core, avoid doing it on the
107          * secondary core.
108          */
109         andis.  r6, r3, CPU_FTR_EMB_HV@h
110         beq     2f
111         rlwinm  r3, r3, 0, ~CPU_FTR_EMB_HV
112         stw     r3, CPU_SPEC_FEATURES(r4)
114         mtlr    r5
115         blr
116 #endif
118 #ifdef CONFIG_PPC_BOOK3E_64
119 _GLOBAL(__restore_cpu_e6500)
120         mflr    r5
121         bl      .setup_altivec_ivors
122         bl      __restore_cpu_e5500
123         mtlr    r5
124         blr
126 _GLOBAL(__restore_cpu_e5500)
127         mflr    r4
128         bl      __e500_icache_setup
129         bl      __e500_dcache_setup
130         bl      .__setup_base_ivors
131         bl      .setup_perfmon_ivor
132         bl      .setup_doorbell_ivors
133         /*
134          * We only want to touch IVOR38-41 if we're running on hardware
135          * that supports category E.HV.  The architectural way to determine
136          * this is MMUCFG[LPIDSIZE].
137          */
138         mfspr   r10,SPRN_MMUCFG
139         rlwinm. r10,r10,0,MMUCFG_LPIDSIZE
140         beq     1f
141         bl      .setup_ehv_ivors
143         mtlr    r4
144         blr
146 _GLOBAL(__setup_cpu_e5500)
147         mflr    r5
148         bl      __e500_icache_setup
149         bl      __e500_dcache_setup
150         bl      .__setup_base_ivors
151         bl      .setup_perfmon_ivor
152         bl      .setup_doorbell_ivors
153         /*
154          * We only want to touch IVOR38-41 if we're running on hardware
155          * that supports category E.HV.  The architectural way to determine
156          * this is MMUCFG[LPIDSIZE].
157          */
158         mfspr   r10,SPRN_MMUCFG
159         rlwinm. r10,r10,0,MMUCFG_LPIDSIZE
160         beq     1f
161         bl      .setup_ehv_ivors
162         b       2f
164         ld      r10,CPU_SPEC_FEATURES(r4)
165         LOAD_REG_IMMEDIATE(r9,CPU_FTR_EMB_HV)
166         andc    r10,r10,r9
167         std     r10,CPU_SPEC_FEATURES(r4)
169         mtlr    r5
170         blr
171 #endif