Merge tag 'staging-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
[sfrench/cifs-2.6.git] / arch / xtensa / include / asm / vectors.h
1 /*
2  * arch/xtensa/include/asm/xchal_vaddr_remap.h
3  *
4  * Xtensa macros for MMU V3 Support. Deals with re-mapping the Virtual
5  * Memory Addresses from "Virtual == Physical" to their prevvious V2 MMU
6  * mappings (KSEG at 0xD0000000 and KIO at 0XF0000000).
7  *
8  * This file is subject to the terms and conditions of the GNU General Public
9  * License.  See the file "COPYING" in the main directory of this archive
10  * for more details.
11  *
12  * Copyright (C) 2008 - 2012 Tensilica Inc.
13  *
14  * Pete Delaney <piet@tensilica.com>
15  * Marc Gauthier <marc@tensilica.com
16  */
17
18 #ifndef _XTENSA_VECTORS_H
19 #define _XTENSA_VECTORS_H
20
21 #include <variant/core.h>
22 #include <platform/hardware.h>
23
24 #if XCHAL_HAVE_PTP_MMU
25 #define XCHAL_KIO_CACHED_VADDR          0xe0000000
26 #define XCHAL_KIO_BYPASS_VADDR          0xf0000000
27 #define XCHAL_KIO_DEFAULT_PADDR         0xf0000000
28 #else
29 #define XCHAL_KIO_BYPASS_VADDR          XCHAL_KIO_PADDR
30 #define XCHAL_KIO_DEFAULT_PADDR         0x90000000
31 #endif
32 #define XCHAL_KIO_SIZE                  0x10000000
33
34 #if (!XCHAL_HAVE_PTP_MMU || XCHAL_HAVE_SPANNING_WAY) && defined(CONFIG_OF)
35 #define XCHAL_KIO_PADDR                 xtensa_get_kio_paddr()
36 #ifndef __ASSEMBLY__
37 extern unsigned long xtensa_kio_paddr;
38
39 static inline unsigned long xtensa_get_kio_paddr(void)
40 {
41         return xtensa_kio_paddr;
42 }
43 #endif
44 #else
45 #define XCHAL_KIO_PADDR                 XCHAL_KIO_DEFAULT_PADDR
46 #endif
47
48 #if defined(CONFIG_MMU)
49
50 /* Will Become VECBASE */
51 #define VIRTUAL_MEMORY_ADDRESS          0xD0000000
52
53 /* Image Virtual Start Address */
54 #define KERNELOFFSET                    0xD0003000
55
56 #if defined(XCHAL_HAVE_PTP_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
57   /* MMU v3  - XCHAL_HAVE_PTP_MMU  == 1 */
58   #define LOAD_MEMORY_ADDRESS           0x00003000
59 #else
60   /* MMU V2 -  XCHAL_HAVE_PTP_MMU  == 0 */
61   #define LOAD_MEMORY_ADDRESS           0xD0003000
62 #endif
63
64 #define RESET_VECTOR1_VADDR             (VIRTUAL_MEMORY_ADDRESS + \
65                                          XCHAL_RESET_VECTOR1_PADDR)
66
67 #else /* !defined(CONFIG_MMU) */
68   /* MMU Not being used - Virtual == Physical */
69
70   /* VECBASE */
71   #define VIRTUAL_MEMORY_ADDRESS        (PLATFORM_DEFAULT_MEM_START + 0x2000)
72
73   /* Location of the start of the kernel text, _start */
74   #define KERNELOFFSET                  (PLATFORM_DEFAULT_MEM_START + 0x3000)
75
76   /* Loaded just above possibly live vectors */
77   #define LOAD_MEMORY_ADDRESS           (PLATFORM_DEFAULT_MEM_START + 0x3000)
78
79 #define RESET_VECTOR1_VADDR             (XCHAL_RESET_VECTOR1_VADDR)
80
81 #endif /* CONFIG_MMU */
82
83 #define XC_VADDR(offset)                (VIRTUAL_MEMORY_ADDRESS  + offset)
84
85 /* Used to set VECBASE register */
86 #define VECBASE_RESET_VADDR             VIRTUAL_MEMORY_ADDRESS
87
88 #if defined(XCHAL_HAVE_VECBASE) && XCHAL_HAVE_VECBASE
89
90 #define USER_VECTOR_VADDR               XC_VADDR(XCHAL_USER_VECOFS)
91 #define KERNEL_VECTOR_VADDR             XC_VADDR(XCHAL_KERNEL_VECOFS)
92 #define DOUBLEEXC_VECTOR_VADDR          XC_VADDR(XCHAL_DOUBLEEXC_VECOFS)
93 #define WINDOW_VECTORS_VADDR            XC_VADDR(XCHAL_WINDOW_OF4_VECOFS)
94 #define INTLEVEL2_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL2_VECOFS)
95 #define INTLEVEL3_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL3_VECOFS)
96 #define INTLEVEL4_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL4_VECOFS)
97 #define INTLEVEL5_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL5_VECOFS)
98 #define INTLEVEL6_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL6_VECOFS)
99
100 #define DEBUG_VECTOR_VADDR              XC_VADDR(XCHAL_DEBUG_VECOFS)
101
102 #define NMI_VECTOR_VADDR                XC_VADDR(XCHAL_NMI_VECOFS)
103
104 #define INTLEVEL7_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL7_VECOFS)
105
106 /*
107  * These XCHAL_* #defines from varian/core.h
108  * are not valid to use with V3 MMU. Non-XCHAL
109  * constants are defined above and should be used.
110  */
111 #undef  XCHAL_VECBASE_RESET_VADDR
112 #undef  XCHAL_RESET_VECTOR0_VADDR
113 #undef  XCHAL_USER_VECTOR_VADDR
114 #undef  XCHAL_KERNEL_VECTOR_VADDR
115 #undef  XCHAL_DOUBLEEXC_VECTOR_VADDR
116 #undef  XCHAL_WINDOW_VECTORS_VADDR
117 #undef  XCHAL_INTLEVEL2_VECTOR_VADDR
118 #undef  XCHAL_INTLEVEL3_VECTOR_VADDR
119 #undef  XCHAL_INTLEVEL4_VECTOR_VADDR
120 #undef  XCHAL_INTLEVEL5_VECTOR_VADDR
121 #undef  XCHAL_INTLEVEL6_VECTOR_VADDR
122 #undef  XCHAL_DEBUG_VECTOR_VADDR
123 #undef  XCHAL_NMI_VECTOR_VADDR
124 #undef  XCHAL_INTLEVEL7_VECTOR_VADDR
125
126 #else
127
128 #define USER_VECTOR_VADDR               XCHAL_USER_VECTOR_VADDR
129 #define KERNEL_VECTOR_VADDR             XCHAL_KERNEL_VECTOR_VADDR
130 #define DOUBLEEXC_VECTOR_VADDR          XCHAL_DOUBLEEXC_VECTOR_VADDR
131 #define WINDOW_VECTORS_VADDR            XCHAL_WINDOW_VECTORS_VADDR
132 #define INTLEVEL2_VECTOR_VADDR          XCHAL_INTLEVEL2_VECTOR_VADDR
133 #define INTLEVEL3_VECTOR_VADDR          XCHAL_INTLEVEL3_VECTOR_VADDR
134 #define INTLEVEL4_VECTOR_VADDR          XCHAL_INTLEVEL4_VECTOR_VADDR
135 #define INTLEVEL5_VECTOR_VADDR          XCHAL_INTLEVEL5_VECTOR_VADDR
136 #define INTLEVEL6_VECTOR_VADDR          XCHAL_INTLEVEL6_VECTOR_VADDR
137 #define DEBUG_VECTOR_VADDR              XCHAL_DEBUG_VECTOR_VADDR
138
139 #endif
140
141 #endif /* _XTENSA_VECTORS_H */