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13#ifndef __ASM_ARM_MEMORY_H
14#define __ASM_ARM_MEMORY_H
15
16#include <linux/compiler.h>
17#include <linux/const.h>
18#include <linux/types.h>
19#include <linux/sizes.h>
20
21#include <asm/cache.h>
22
23#ifdef CONFIG_NEED_MACH_MEMORY_H
24#include <mach/memory.h>
25#endif
26
27
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29
30
31#define UL(x) _AC(x, UL)
32
33#ifdef CONFIG_MMU
34
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38
39
40#define PAGE_OFFSET UL(CONFIG_PAGE_OFFSET)
41#define TASK_SIZE (UL(CONFIG_PAGE_OFFSET) - UL(SZ_16M))
42#define TASK_UNMAPPED_BASE ALIGN(TASK_SIZE / 3, SZ_16M)
43
44
45
46
47#define TASK_SIZE_26 (UL(1) << 26)
48
49
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51
52
53#ifndef CONFIG_THUMB2_KERNEL
54#define MODULES_VADDR (PAGE_OFFSET - SZ_16M)
55#else
56
57#define MODULES_VADDR (PAGE_OFFSET - SZ_8M)
58#endif
59
60#if TASK_SIZE > MODULES_VADDR
61#error Top of user space clashes with start of module space
62#endif
63
64
65
66
67#ifdef CONFIG_HIGHMEM
68#define MODULES_END (PAGE_OFFSET - PMD_SIZE)
69#else
70#define MODULES_END (PAGE_OFFSET)
71#endif
72
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76
77
78#define XIP_VIRT_ADDR(physaddr) (MODULES_VADDR + ((physaddr) & 0x000fffff))
79
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82
83#define IOREMAP_MAX_ORDER 24
84
85#define CONSISTENT_END (0xffe00000UL)
86
87#else
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93
94
95#ifndef TASK_SIZE
96#define TASK_SIZE (CONFIG_DRAM_SIZE)
97#endif
98
99#ifndef TASK_UNMAPPED_BASE
100#define TASK_UNMAPPED_BASE UL(0x00000000)
101#endif
102
103#ifndef PHYS_OFFSET
104#define PHYS_OFFSET UL(CONFIG_DRAM_BASE)
105#endif
106
107#ifndef END_MEM
108#define END_MEM (UL(CONFIG_DRAM_BASE) + CONFIG_DRAM_SIZE)
109#endif
110
111#ifndef PAGE_OFFSET
112#define PAGE_OFFSET (PHYS_OFFSET)
113#endif
114
115
116
117
118#define MODULES_END (END_MEM)
119#define MODULES_VADDR (PHYS_OFFSET)
120
121#define XIP_VIRT_ADDR(physaddr) (physaddr)
122
123#endif
124
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127
128
129#ifdef CONFIG_HAVE_TCM
130#define ITCM_OFFSET UL(0xfffe0000)
131#define DTCM_OFFSET UL(0xfffe8000)
132#endif
133
134
135
136
137#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT))
138#define __pfn_to_phys(pfn) ((phys_addr_t)(pfn) << PAGE_SHIFT)
139
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141
142
143#define page_to_phys(page) (__pfn_to_phys(page_to_pfn(page)))
144#define phys_to_page(phys) (pfn_to_page(__phys_to_pfn(phys)))
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152
153#ifdef CONFIG_ARM_LPAE
154#define ARCH_PGD_SHIFT L1_CACHE_SHIFT
155#else
156#define ARCH_PGD_SHIFT 0
157#endif
158#define ARCH_PGD_MASK ((1 << ARCH_PGD_SHIFT) - 1)
159
160#ifndef __ASSEMBLY__
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165
166
167#ifndef __virt_to_phys
168#ifdef CONFIG_ARM_PATCH_PHYS_VIRT
169
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173
174#define __PV_BITS_31_24 0x81000000
175
176extern unsigned long __pv_phys_offset;
177#define PHYS_OFFSET __pv_phys_offset
178
179#define __pv_stub(from,to,instr,type) \
180 __asm__("@ __pv_stub\n" \
181 "1: " instr " %0, %1, %2\n" \
182 " .pushsection .pv_table,\"a\"\n" \
183 " .long 1b\n" \
184 " .popsection\n" \
185 : "=r" (to) \
186 : "r" (from), "I" (type))
187
188static inline unsigned long __virt_to_phys(unsigned long x)
189{
190 unsigned long t;
191 __pv_stub(x, t, "add", __PV_BITS_31_24);
192 return t;
193}
194
195static inline unsigned long __phys_to_virt(unsigned long x)
196{
197 unsigned long t;
198 __pv_stub(x, t, "sub", __PV_BITS_31_24);
199 return t;
200}
201#else
202#define __virt_to_phys(x) ((x) - PAGE_OFFSET + PHYS_OFFSET)
203#define __phys_to_virt(x) ((x) - PHYS_OFFSET + PAGE_OFFSET)
204#endif
205#endif
206#endif
207
208#ifndef PHYS_OFFSET
209#ifdef PLAT_PHYS_OFFSET
210#define PHYS_OFFSET PLAT_PHYS_OFFSET
211#else
212#define PHYS_OFFSET UL(CONFIG_PHYS_OFFSET)
213#endif
214#endif
215
216#ifndef __ASSEMBLY__
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226#define PHYS_PFN_OFFSET ((unsigned long)(PHYS_OFFSET >> PAGE_SHIFT))
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234static inline phys_addr_t virt_to_phys(const volatile void *x)
235{
236 return __virt_to_phys((unsigned long)(x));
237}
238
239static inline void *phys_to_virt(phys_addr_t x)
240{
241 return (void *)(__phys_to_virt((unsigned long)(x)));
242}
243
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246
247#define __pa(x) __virt_to_phys((unsigned long)(x))
248#define __va(x) ((void *)__phys_to_virt((unsigned long)(x)))
249#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
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256
257#ifndef __virt_to_bus
258#define __virt_to_bus __virt_to_phys
259#define __bus_to_virt __phys_to_virt
260#define __pfn_to_bus(x) __pfn_to_phys(x)
261#define __bus_to_pfn(x) __phys_to_pfn(x)
262#endif
263
264#ifdef CONFIG_VIRT_TO_BUS
265static inline __deprecated unsigned long virt_to_bus(void *x)
266{
267 return __virt_to_bus((unsigned long)x);
268}
269
270static inline __deprecated void *bus_to_virt(unsigned long x)
271{
272 return (void *)__bus_to_virt(x);
273}
274#endif
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284
285#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET
286
287#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
288#define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)
289
290#endif
291
292#include <asm-generic/memory_model.h>
293
294#endif
295