FILE
vm_init_segtable.S

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linux-6.19.14/arch/hexagon/kernel/vm_init_segtable.S S
  1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * Initial page table for Linux kernel under Hexagon VM,
  4 *
  5 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
  6 */
  7
  8/*
  9 * These tables are pre-computed and linked into kernel.
 10 */
 11
 12#include <asm/vm_mmu.h>
 13/*  #include <asm/iomap.h>  */
 14
 15/*
 16 * Start with mapping PA=0 to both VA=0x0 and VA=0xc000000 as 16MB large pages.
 17 * No user mode access, RWX, write-back cache.  The entry needs
 18 * to be replicated for all 4 virtual segments mapping to the page.
 19 */
 20
 21/* "Big Kernel Page"  */
 22#define BKP(pa) (((pa) & __HVM_PTE_PGMASK_4MB)		\
 23		| __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X	\
 24		| __HEXAGON_C_WB_L2 << 6			\
 25		| __HVM_PDE_S_16MB)
 26
 27/*  No cache version  */
 28
 29#define BKPG_IO(pa) (((pa) & __HVM_PTE_PGMASK_16MB) \
 30			| __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X \
 31			| __HVM_PDE_S_16MB | __HEXAGON_C_DEV << 6 )
 32
 33#define FOURK_IO(pa) (((pa) & __HVM_PTE_PGMASK_4KB) \
 34			| __HVM_PTE_R | __HVM_PTE_W | __HVM_PTE_X \
 35			| __HEXAGON_C_DEV << 6 )
 36
 37#define L2_PTR(pa) (((pa) & __HVM_PTE_PGMASK_4KB) \
 38			| __HVM_PDE_S_4KB  )
 39
 40#define X __HVM_PDE_S_INVALID
 41
 42	.p2align 12
 43	.globl swapper_pg_dir
 44	.globl _K_init_segtable
 45swapper_pg_dir:
 46/* VA 0x00000000 */
 47	.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 */
 60	.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
 74/*0xa8*/.word X,X,X,X
 75#ifdef CONFIG_COMET_EARLY_UART_DEBUG
 76UART_PTE_ENTRY:
 77/*0xa9*/.word BKPG_IO(0xa9000000),BKPG_IO(0xa9000000),BKPG_IO(0xa9000000),BKPG_IO(0xa9000000)
 78#else
 79/*0xa9*/.word X,X,X,X
 80#endif
 81/*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
 87/*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
~/ Read-only file preview.