CoCalc -- vm_init

GitHub Repository: torvalds/linux
Path: blob/master/arch/hexagon/kernel/vm_init_segtable.S
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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 * Initial page table for Linux kernel under Hexagon VM,
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 *
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 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
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 */
7

8
/*
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 * These tables are pre-computed and linked into kernel.
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 */
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12
#include <asm/vm_mmu.h>
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/*  #include <asm/iomap.h>  */
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15
/*
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 * Start with mapping PA=0 to both VA=0x0 and VA=0xc000000 as 16MB large pages.
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 * No user mode access, RWX, write-back cache.  The entry needs
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 * to be replicated for all 4 virtual segments mapping to the page.
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 */
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/* "Big Kernel Page"  */
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#define BKP(pa) (((pa) & __HVM_PTE_PGMASK_4MB)		\
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		| __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X	\
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		| __HEXAGON_C_WB_L2 << 6			\
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		| __HVM_PDE_S_16MB)
26

27
/*  No cache version  */
28

29
#define BKPG_IO(pa) (((pa) & __HVM_PTE_PGMASK_16MB) \
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			| __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X \
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			| __HVM_PDE_S_16MB | __HEXAGON_C_DEV << 6 )
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33
#define FOURK_IO(pa) (((pa) & __HVM_PTE_PGMASK_4KB) \
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			| __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X \
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			| __HEXAGON_C_DEV << 6 )
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37
#define L2_PTR(pa) (((pa) & __HVM_PTE_PGMASK_4KB) \
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			| __HVM_PDE_S_4KB  )
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40
#define X __HVM_PDE_S_INVALID
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	.p2align 12
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	.globl swapper_pg_dir
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	.globl _K_init_segtable
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swapper_pg_dir:
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/* VA 0x00000000 */
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	.word X,X,X,X
48
	.word X,X,X,X
49
	.word X,X,X,X
50
	.word X,X,X,X
51
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
52
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
53
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
54
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
55
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
56
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
57
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
58
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
59
/* VA 0x40000000 */
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	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
61
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
62
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
63
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
64
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
65
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
66
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
67
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
68
/* VA 0x80000000 */
69
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
70
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
71
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
72
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
73
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
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/*0xa8*/.word X,X,X,X
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#ifdef CONFIG_COMET_EARLY_UART_DEBUG
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UART_PTE_ENTRY:
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/*0xa9*/.word BKPG_IO(0xa9000000),BKPG_IO(0xa9000000),BKPG_IO(0xa9000000),BKPG_IO(0xa9000000)
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#else
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/*0xa9*/.word X,X,X,X
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#endif
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/*0xaa*/.word X,X,X,X
82
/*0xab*/.word X,X,X,X
83
/*0xac*/.word X,X,X,X
84
/*0xad*/.word X,X,X,X
85
/*0xae*/.word X,X,X,X
86
/*0xaf*/.word X,X,X,X
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/*0xb0*/.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
88
	.word X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X
89
_K_init_segtable:
90
/* VA 0xC0000000 */
91
	.word BKP(0x00000000), BKP(0x00400000), BKP(0x00800000), BKP(0x00c00000)
92
	.word BKP(0x01000000), BKP(0x01400000), BKP(0x01800000), BKP(0x01c00000)
93
	.word BKP(0x02000000), BKP(0x02400000), BKP(0x02800000), BKP(0x02c00000)
94
	.word BKP(0x03000000), BKP(0x03400000), BKP(0x03800000), BKP(0x03c00000)
95
	.word BKP(0x04000000), BKP(0x04400000), BKP(0x04800000), BKP(0x04c00000)
96
	.word BKP(0x05000000), BKP(0x05400000), BKP(0x05800000), BKP(0x05c00000)
97
	.word BKP(0x06000000), BKP(0x06400000), BKP(0x06800000), BKP(0x06c00000)
98
	.word BKP(0x07000000), BKP(0x07400000), BKP(0x07800000), BKP(0x07c00000)
99

100
	.word BKP(0x08000000), BKP(0x08400000), BKP(0x08800000), BKP(0x08c00000)
101
	.word BKP(0x09000000), BKP(0x09400000), BKP(0x09800000), BKP(0x09c00000)
102
	.word BKP(0x0a000000), BKP(0x0a400000), BKP(0x0a800000), BKP(0x0ac00000)
103
	.word BKP(0x0b000000), BKP(0x0b400000), BKP(0x0b800000), BKP(0x0bc00000)
104
	.word BKP(0x0c000000), BKP(0x0c400000), BKP(0x0c800000), BKP(0x0cc00000)
105
	.word BKP(0x0d000000), BKP(0x0d400000), BKP(0x0d800000), BKP(0x0dc00000)
106
	.word BKP(0x0e000000), BKP(0x0e400000), BKP(0x0e800000), BKP(0x0ec00000)
107
	.word BKP(0x0f000000), BKP(0x0f400000), BKP(0x0f800000), BKP(0x0fc00000)
108

109
	.word BKP(0x10000000), BKP(0x10400000), BKP(0x10800000), BKP(0x10c00000)
110
	.word BKP(0x11000000), BKP(0x11400000), BKP(0x11800000), BKP(0x11c00000)
111
	.word BKP(0x12000000), BKP(0x12400000), BKP(0x12800000), BKP(0x12c00000)
112
	.word BKP(0x13000000), BKP(0x13400000), BKP(0x13800000), BKP(0x13c00000)
113
	.word BKP(0x14000000), BKP(0x14400000), BKP(0x14800000), BKP(0x14c00000)
114
	.word BKP(0x15000000), BKP(0x15400000), BKP(0x15800000), BKP(0x15c00000)
115
	.word BKP(0x16000000), BKP(0x16400000), BKP(0x16800000), BKP(0x16c00000)
116
	.word BKP(0x17000000), BKP(0x17400000), BKP(0x17800000), BKP(0x17c00000)
117

118
	.word BKP(0x18000000), BKP(0x18400000), BKP(0x18800000), BKP(0x18c00000)
119
	.word BKP(0x19000000), BKP(0x19400000), BKP(0x19800000), BKP(0x19c00000)
120
	.word BKP(0x1a000000), BKP(0x1a400000), BKP(0x1a800000), BKP(0x1ac00000)
121
	.word BKP(0x1b000000), BKP(0x1b400000), BKP(0x1b800000), BKP(0x1bc00000)
122
	.word BKP(0x1c000000), BKP(0x1c400000), BKP(0x1c800000), BKP(0x1cc00000)
123
	.word BKP(0x1d000000), BKP(0x1d400000), BKP(0x1d800000), BKP(0x1dc00000)
124
	.word BKP(0x1e000000), BKP(0x1e400000), BKP(0x1e800000), BKP(0x1ec00000)
125
	.word BKP(0x1f000000), BKP(0x1f400000), BKP(0x1f800000), BKP(0x1fc00000)
126

127
	.word BKP(0x20000000), BKP(0x20400000), BKP(0x20800000), BKP(0x20c00000)
128
	.word BKP(0x21000000), BKP(0x21400000), BKP(0x21800000), BKP(0x21c00000)
129
	.word BKP(0x22000000), BKP(0x22400000), BKP(0x22800000), BKP(0x22c00000)
130
	.word BKP(0x23000000), BKP(0x23400000), BKP(0x23800000), BKP(0x23c00000)
131
	.word BKP(0x24000000), BKP(0x24400000), BKP(0x24800000), BKP(0x24c00000)
132
	.word BKP(0x25000000), BKP(0x25400000), BKP(0x25800000), BKP(0x25c00000)
133
	.word BKP(0x26000000), BKP(0x26400000), BKP(0x26800000), BKP(0x26c00000)
134
	.word BKP(0x27000000), BKP(0x27400000), BKP(0x27800000), BKP(0x27c00000)
135

136
	.word BKP(0x28000000), BKP(0x28400000), BKP(0x28800000), BKP(0x28c00000)
137
	.word BKP(0x29000000), BKP(0x29400000), BKP(0x29800000), BKP(0x29c00000)
138
	.word BKP(0x2a000000), BKP(0x2a400000), BKP(0x2a800000), BKP(0x2ac00000)
139
	.word BKP(0x2b000000), BKP(0x2b400000), BKP(0x2b800000), BKP(0x2bc00000)
140
	.word BKP(0x2c000000), BKP(0x2c400000), BKP(0x2c800000), BKP(0x2cc00000)
141
	.word BKP(0x2d000000), BKP(0x2d400000), BKP(0x2d800000), BKP(0x2dc00000)
142
	.word BKP(0x2e000000), BKP(0x2e400000), BKP(0x2e800000), BKP(0x2ec00000)
143
	.word BKP(0x2f000000), BKP(0x2f400000), BKP(0x2f800000), BKP(0x2fc00000)
144

145
	.word BKP(0x30000000), BKP(0x30400000), BKP(0x30800000), BKP(0x30c00000)
146
	.word BKP(0x31000000), BKP(0x31400000), BKP(0x31800000), BKP(0x31c00000)
147
	.word BKP(0x32000000), BKP(0x32400000), BKP(0x32800000), BKP(0x32c00000)
148
	.word BKP(0x33000000), BKP(0x33400000), BKP(0x33800000), BKP(0x33c00000)
149
	.word BKP(0x34000000), BKP(0x34400000), BKP(0x34800000), BKP(0x34c00000)
150
	.word BKP(0x35000000), BKP(0x35400000), BKP(0x35800000), BKP(0x35c00000)
151
	.word BKP(0x36000000), BKP(0x36400000), BKP(0x36800000), BKP(0x36c00000)
152
	.word BKP(0x37000000), BKP(0x37400000), BKP(0x37800000), BKP(0x37c00000)
153

154
	.word BKP(0x38000000), BKP(0x38400000), BKP(0x38800000), BKP(0x38c00000)
155
	.word BKP(0x39000000), BKP(0x39400000), BKP(0x39800000), BKP(0x39c00000)
156
	.word BKP(0x3a000000), BKP(0x3a400000), BKP(0x3a800000), BKP(0x3ac00000)
157
	.word BKP(0x3b000000), BKP(0x3b400000), BKP(0x3b800000), BKP(0x3bc00000)
158
	.word BKP(0x3c000000), BKP(0x3c400000), BKP(0x3c800000), BKP(0x3cc00000)
159
	.word BKP(0x3d000000), BKP(0x3d400000), BKP(0x3d800000), BKP(0x3dc00000)
160
_K_io_map:
161
	.word X,X,X,X /* 0x3e000000 - device IO early remap */
162
	.word X,X,X,X /* 0x3f000000 - hypervisor space*/
163

164
#if 0
165
/*
166
 * This is in here as an example for devices which need to be mapped really
167
 * early.
168
 */
169
	.p2align 12
170
	.globl _K_io_kmap
171
	.globl _K_init_devicetable
172
_K_init_devicetable:  /*  Should be 4MB worth of entries  */
173
	.word FOURK_IO(MSM_GPIO1_PHYS),FOURK_IO(MSM_GPIO2_PHYS),FOURK_IO(MSM_SIRC_PHYS),X
174
	.word FOURK_IO(TLMM_GPIO1_PHYS),X,X,X
175
	.word X,X,X,X
176
	.word X,X,X,X
177
	.word X,X,X,X
178
	.word X,X,X,X
179
	.word X,X,X,X
180
	.word X,X,X,X
181
	.word X,X,X,X
182
	.word X,X,X,X
183
	.word X,X,X,X
184
	.word X,X,X,X
185
	.word X,X,X,X
186
	.word X,X,X,X
187
	.word X,X,X,X
188
	.word X,X,X,X
189
	.word X,X,X,X
190
	.word X,X,X,X
191
	.word X,X,X,X
192
	.word X,X,X,X
193
	.word X,X,X,X
194
	.word X,X,X,X
195
	.word X,X,X,X
196
	.word X,X,X,X
197
	.word X,X,X,X
198
	.word X,X,X,X
199
	.word X,X,X,X
200
	.word X,X,X,X
201
	.word X,X,X,X
202
	.word X,X,X,X
203
	.word X,X,X,X
204
	.word X,X,X,X
205
	.word X,X,X,X
206
	.word X,X,X,X
207
	.word X,X,X,X
208
	.word X,X,X,X
209
	.word X,X,X,X
210
	.word X,X,X,X
211
	.word X,X,X,X
212
	.word X,X,X,X
213
	.word X,X,X,X
214
	.word X,X,X,X
215
	.word X,X,X,X
216
	.word X,X,X,X
217
	.word X,X,X,X
218
	.word X,X,X,X
219
	.word X,X,X,X
220
	.word X,X,X,X
221
	.word X,X,X,X
222
	.word X,X,X,X
223
	.word X,X,X,X
224
	.word X,X,X,X
225
	.word X,X,X,X
226
	.word X,X,X,X
227
	.word X,X,X,X
228
	.word X,X,X,X
229
	.word X,X,X,X
230
	.word X,X,X,X
231
	.word X,X,X,X
232
	.word X,X,X,X
233
	.word X,X,X,X
234
	.word X,X,X,X
235
	.word X,X,X,X
236
	.word X,X,X,X
237
	.word X,X,X,X
238
	.word X,X,X,X
239
	.word X,X,X,X
240
	.word X,X,X,X
241
	.word X,X,X,X
242
	.word X,X,X,X
243
	.word X,X,X,X
244
	.word X,X,X,X
245
	.word X,X,X,X
246
	.word X,X,X,X
247
	.word X,X,X,X
248
	.word X,X,X,X
249
	.word X,X,X,X
250
	.word X,X,X,X
251
	.word X,X,X,X
252
	.word X,X,X,X
253
	.word X,X,X,X
254
	.word X,X,X,X
255
	.word X,X,X,X
256
	.word X,X,X,X
257
	.word X,X,X,X
258
	.word X,X,X,X
259
	.word X,X,X,X
260
	.word X,X,X,X
261
	.word X,X,X,X
262
	.word X,X,X,X
263
	.word X,X,X,X
264
	.word X,X,X,X
265
	.word X,X,X,X
266
	.word X,X,X,X
267
	.word X,X,X,X
268
	.word X,X,X,X
269
	.word X,X,X,X
270
	.word X,X,X,X
271
	.word X,X,X,X
272
	.word X,X,X,X
273
	.word X,X,X,X
274
	.word X,X,X,X
275
	.word X,X,X,X
276
	.word X,X,X,X
277
	.word X,X,X,X
278
	.word X,X,X,X
279
	.word X,X,X,X
280
	.word X,X,X,X
281
	.word X,X,X,X
282
	.word X,X,X,X
283
	.word X,X,X,X
284
	.word X,X,X,X
285
	.word X,X,X,X
286
	.word X,X,X,X
287
	.word X,X,X,X
288
	.word X,X,X,X
289
	.word X,X,X,X
290
	.word X,X,X,X
291
	.word X,X,X,X
292
	.word X,X,X,X
293
	.word X,X,X,X
294
	.word X,X,X,X
295
	.word X,X,X,X
296
	.word X,X,X,X
297
	.word X,X,X,X
298
	.word X,X,X,X
299
	.word X,X,X,X
300
	.word X,X,X,X
301
	.word X,X,X,X
302
	.word X,X,X,X
303
	.word X,X,X,X
304
	.word X,X,X,X
305
	.word X,X,X,X
306
	.word X,X,X,X
307
	.word X,X,X,X
308
	.word X,X,X,X
309
	.word X,X,X,X
310
	.word X,X,X,X
311
	.word X,X,X,X
312
	.word X,X,X,X
313
	.word X,X,X,X
314
	.word X,X,X,X
315
	.word X,X,X,X
316
	.word X,X,X,X
317
	.word X,X,X,X
318
	.word X,X,X,X
319
	.word X,X,X,X
320
	.word X,X,X,X
321
	.word X,X,X,X
322
	.word X,X,X,X
323
	.word X,X,X,X
324
	.word X,X,X,X
325
	.word X,X,X,X
326
	.word X,X,X,X
327
	.word X,X,X,X
328
	.word X,X,X,X
329
	.word X,X,X,X
330
	.word X,X,X,X
331
	.word X,X,X,X
332
	.word X,X,X,X
333
	.word X,X,X,X
334
	.word X,X,X,X
335
	.word X,X,X,X
336
	.word X,X,X,X
337
	.word X,X,X,X
338
	.word X,X,X,X
339
	.word X,X,X,X
340
	.word X,X,X,X
341
	.word X,X,X,X
342
	.word X,X,X,X
343
	.word X,X,X,X
344
	.word X,X,X,X
345
	.word X,X,X,X
346
	.word X,X,X,X
347
	.word X,X,X,X
348
	.word X,X,X,X
349
	.word X,X,X,X
350
	.word X,X,X,X
351
	.word X,X,X,X
352
	.word X,X,X,X
353
	.word X,X,X,X
354
	.word X,X,X,X
355
	.word X,X,X,X
356
	.word X,X,X,X
357
	.word X,X,X,X
358
	.word X,X,X,X
359
	.word X,X,X,X
360
	.word X,X,X,X
361
	.word X,X,X,X
362
	.word X,X,X,X
363
	.word X,X,X,X
364
	.word X,X,X,X
365
	.word X,X,X,X
366
	.word X,X,X,X
367
	.word X,X,X,X
368
	.word X,X,X,X
369
	.word X,X,X,X
370
	.word X,X,X,X
371
	.word X,X,X,X
372
	.word X,X,X,X
373
	.word X,X,X,X
374
	.word X,X,X,X
375
	.word X,X,X,X
376
	.word X,X,X,X
377
	.word X,X,X,X
378
	.word X,X,X,X
379
	.word X,X,X,X
380
	.word X,X,X,X
381
	.word X,X,X,X
382
	.word X,X,X,X
383
	.word X,X,X,X
384
	.word X,X,X,X
385
	.word X,X,X,X
386
	.word X,X,X,X
387
	.word X,X,X,X
388
	.word X,X,X,X
389
	.word X,X,X,X
390
	.word X,X,X,X
391
	.word X,X,X,X
392
	.word X,X,X,X
393
	.word X,X,X,X
394
	.word X,X,X,X
395
	.word X,X,X,X
396
	.word X,X,X,X
397
	.word X,X,X,X
398
	.word X,X,X,X
399
	.word X,X,X,X
400
	.word X,X,X,X
401
	.word X,X,X,X
402
	.word X,X,X,X
403
	.word X,X,X,X
404
	.word X,X,X,X
405
	.word X,X,X,X
406
	.word X,X,X,X
407
	.word X,X,X,X
408
	.word X,X,X,X
409
	.word X,X,X,X
410
	.word X,X,X,X
411
	.word X,X,X,X
412
	.word X,X,X,X
413
	.word X,X,X,X
414
	.word X,X,X,X
415
	.word X,X,X,X
416
	.word X,X,X,X
417
	.word X,X,X,X
418
	.word X,X,X,X
419
	.word X,X,X,X
420
	.word X,X,X,X
421
	.word X,X,X,X
422
	.word X,X,X,X
423
	.word X,X,X,X
424
	.word X,X,X,X
425
	.word X,X,X,X
426
	.word X,X,X,X
427
	.word X,X,X,X
428
	.word X,X,X,X
429
#endif
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