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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#ifdef CONFIG_NEED_MACH_MEMORY_H
22#include <mach/memory.h>
23#endif
24
25
26
27
28
29#define UL(x) _AC(x, UL)
30
31
32#define PAGE_OFFSET UL(CONFIG_PAGE_OFFSET)
33
34#ifdef CONFIG_MMU
35
36
37
38
39
40#define TASK_SIZE (UL(CONFIG_PAGE_OFFSET) - UL(SZ_16M))
41#define TASK_UNMAPPED_BASE ALIGN(TASK_SIZE / 3, SZ_16M)
42
43
44
45
46#define TASK_SIZE_26 (UL(1) << 26)
47
48
49
50
51
52#ifndef CONFIG_THUMB2_KERNEL
53#define MODULES_VADDR (PAGE_OFFSET - SZ_16M)
54#else
55
56#define MODULES_VADDR (PAGE_OFFSET - SZ_8M)
57#endif
58
59#if TASK_SIZE > MODULES_VADDR
60#error Top of user space clashes with start of module space
61#endif
62
63
64
65
66#ifdef CONFIG_HIGHMEM
67#define MODULES_END (PAGE_OFFSET - PMD_SIZE)
68#else
69#define MODULES_END (PAGE_OFFSET)
70#endif
71
72
73
74
75
76
77#define XIP_VIRT_ADDR(physaddr) (MODULES_VADDR + ((physaddr) & 0x000fffff))
78
79#if !defined(CONFIG_SMP) && !defined(CONFIG_ARM_LPAE)
80
81
82
83#define IOREMAP_MAX_ORDER 24
84#endif
85
86#define VECTORS_BASE UL(0xffff0000)
87
88#else
89
90#ifndef __ASSEMBLY__
91extern unsigned long vectors_base;
92#define VECTORS_BASE vectors_base
93#endif
94
95
96
97
98
99
100
101#define TASK_SIZE UL(0xffffffff)
102
103#ifndef TASK_UNMAPPED_BASE
104#define TASK_UNMAPPED_BASE UL(0x00000000)
105#endif
106
107#ifndef END_MEM
108#define END_MEM (UL(CONFIG_DRAM_BASE) + CONFIG_DRAM_SIZE)
109#endif
110
111
112
113
114#define MODULES_END (END_MEM)
115#define MODULES_VADDR PAGE_OFFSET
116
117#define XIP_VIRT_ADDR(physaddr) (physaddr)
118
119#endif
120
121#ifdef CONFIG_XIP_KERNEL
122#define KERNEL_START _sdata
123#else
124#define KERNEL_START _stext
125#endif
126#define KERNEL_END _end
127
128
129
130
131
132#ifdef CONFIG_HAVE_TCM
133#define ITCM_OFFSET UL(0xfffe0000)
134#define DTCM_OFFSET UL(0xfffe8000)
135#endif
136
137
138
139
140#define page_to_phys(page) (__pfn_to_phys(page_to_pfn(page)))
141#define phys_to_page(phys) (pfn_to_page(__phys_to_pfn(phys)))
142
143
144
145
146
147
148
149#define PLAT_PHYS_OFFSET UL(CONFIG_PHYS_OFFSET)
150
151#ifdef CONFIG_XIP_KERNEL
152
153
154
155
156
157
158#define PHYS_RELATIVE(v_data, v_text) \
159 (((v_data) - PAGE_OFFSET + PLAT_PHYS_OFFSET) - \
160 ((v_text) - XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR) + \
161 CONFIG_XIP_PHYS_ADDR))
162#else
163#define PHYS_RELATIVE(v_data, v_text) ((v_data) - (v_text))
164#endif
165
166#ifndef __ASSEMBLY__
167
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174
175
176
177#if defined(CONFIG_ARM_PATCH_PHYS_VIRT)
178
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182
183#define __PV_BITS_31_24 0x81000000
184#define __PV_BITS_7_0 0x81
185
186extern unsigned long __pv_phys_pfn_offset;
187extern u64 __pv_offset;
188extern void fixup_pv_table(const void *, unsigned long);
189extern const void *__pv_table_begin, *__pv_table_end;
190
191#define PHYS_OFFSET ((phys_addr_t)__pv_phys_pfn_offset << PAGE_SHIFT)
192#define PHYS_PFN_OFFSET (__pv_phys_pfn_offset)
193
194#define __pv_stub(from,to,instr,type) \
195 __asm__("@ __pv_stub\n" \
196 "1: " instr " %0, %1, %2\n" \
197 " .pushsection .pv_table,\"a\"\n" \
198 " .long 1b\n" \
199 " .popsection\n" \
200 : "=r" (to) \
201 : "r" (from), "I" (type))
202
203#define __pv_stub_mov_hi(t) \
204 __asm__ volatile("@ __pv_stub_mov\n" \
205 "1: mov %R0, %1\n" \
206 " .pushsection .pv_table,\"a\"\n" \
207 " .long 1b\n" \
208 " .popsection\n" \
209 : "=r" (t) \
210 : "I" (__PV_BITS_7_0))
211
212#define __pv_add_carry_stub(x, y) \
213 __asm__ volatile("@ __pv_add_carry_stub\n" \
214 "1: adds %Q0, %1, %2\n" \
215 " adc %R0, %R0, #0\n" \
216 " .pushsection .pv_table,\"a\"\n" \
217 " .long 1b\n" \
218 " .popsection\n" \
219 : "+r" (y) \
220 : "r" (x), "I" (__PV_BITS_31_24) \
221 : "cc")
222
223static inline phys_addr_t __virt_to_phys_nodebug(unsigned long x)
224{
225 phys_addr_t t;
226
227 if (sizeof(phys_addr_t) == 4) {
228 __pv_stub(x, t, "add", __PV_BITS_31_24);
229 } else {
230 __pv_stub_mov_hi(t);
231 __pv_add_carry_stub(x, t);
232 }
233 return t;
234}
235
236static inline unsigned long __phys_to_virt(phys_addr_t x)
237{
238 unsigned long t;
239
240
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243
244
245
246 __pv_stub((unsigned long) x, t, "sub", __PV_BITS_31_24);
247 return t;
248}
249
250#else
251
252#define PHYS_OFFSET PLAT_PHYS_OFFSET
253#define PHYS_PFN_OFFSET ((unsigned long)(PHYS_OFFSET >> PAGE_SHIFT))
254
255static inline phys_addr_t __virt_to_phys_nodebug(unsigned long x)
256{
257 return (phys_addr_t)x - PAGE_OFFSET + PHYS_OFFSET;
258}
259
260static inline unsigned long __phys_to_virt(phys_addr_t x)
261{
262 return x - PHYS_OFFSET + PAGE_OFFSET;
263}
264
265#endif
266
267#define virt_to_pfn(kaddr) \
268 ((((unsigned long)(kaddr) - PAGE_OFFSET) >> PAGE_SHIFT) + \
269 PHYS_PFN_OFFSET)
270
271#define __pa_symbol_nodebug(x) __virt_to_phys_nodebug((x))
272
273#ifdef CONFIG_DEBUG_VIRTUAL
274extern phys_addr_t __virt_to_phys(unsigned long x);
275extern phys_addr_t __phys_addr_symbol(unsigned long x);
276#else
277#define __virt_to_phys(x) __virt_to_phys_nodebug(x)
278#define __phys_addr_symbol(x) __pa_symbol_nodebug(x)
279#endif
280
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285
286
287#define virt_to_phys virt_to_phys
288static inline phys_addr_t virt_to_phys(const volatile void *x)
289{
290 return __virt_to_phys((unsigned long)(x));
291}
292
293#define phys_to_virt phys_to_virt
294static inline void *phys_to_virt(phys_addr_t x)
295{
296 return (void *)__phys_to_virt(x);
297}
298
299
300
301
302#define __pa(x) __virt_to_phys((unsigned long)(x))
303#define __pa_symbol(x) __phys_addr_symbol(RELOC_HIDE((unsigned long)(x), 0))
304#define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x)))
305#define pfn_to_kaddr(pfn) __va((phys_addr_t)(pfn) << PAGE_SHIFT)
306
307extern long long arch_phys_to_idmap_offset;
308
309
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312
313
314static inline bool arm_has_idmap_alias(void)
315{
316 return IS_ENABLED(CONFIG_MMU) && arch_phys_to_idmap_offset != 0;
317}
318
319#define IDMAP_INVALID_ADDR ((u32)~0)
320
321static inline unsigned long phys_to_idmap(phys_addr_t addr)
322{
323 if (IS_ENABLED(CONFIG_MMU) && arch_phys_to_idmap_offset) {
324 addr += arch_phys_to_idmap_offset;
325 if (addr > (u32)~0)
326 addr = IDMAP_INVALID_ADDR;
327 }
328 return addr;
329}
330
331static inline phys_addr_t idmap_to_phys(unsigned long idmap)
332{
333 phys_addr_t addr = idmap;
334
335 if (IS_ENABLED(CONFIG_MMU) && arch_phys_to_idmap_offset)
336 addr -= arch_phys_to_idmap_offset;
337
338 return addr;
339}
340
341static inline unsigned long __virt_to_idmap(unsigned long x)
342{
343 return phys_to_idmap(__virt_to_phys(x));
344}
345
346#define virt_to_idmap(x) __virt_to_idmap((unsigned long)(x))
347
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353
354#ifndef __virt_to_bus
355#define __virt_to_bus __virt_to_phys
356#define __bus_to_virt __phys_to_virt
357#define __pfn_to_bus(x) __pfn_to_phys(x)
358#define __bus_to_pfn(x) __phys_to_pfn(x)
359#endif
360
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369
370#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET
371
372#define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
373#define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) \
374 && pfn_valid(virt_to_pfn(kaddr)))
375
376#endif
377
378#include <asm-generic/memory_model.h>
379
380#endif
381