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start.S @ 947c6645

Last change on this file since 947c6645 was 947c6645, checked in by Christian Mauderer <christian.mauderer@…>, on 03/07/22 at 13:06:23

bsps/m68k: Restore license file

Quite some files in the bsps/m68k/genmcf548x mention a
Freescale_license.txt file. The file has been accidentally removed
during the source reorganization in 2018. This commit restores it and
moves it to the right location for licenses.

Update #4625.

Property mode set to 100644

File size: 16.4 KB

Line
1	/*
2	* RTEMS generic mcf548x BSP
3	*
4	* The file contains the assembly part of MCF548x init code.
5	*
6	* Parts of the code has been derived from the "dBUG source code"
7	* package Freescale is providing for M548X EVBs. The usage of
8	* the modified or unmodified code and it's integration into the
9	* generic mcf548x BSP has been done according to the Freescale
10	* license terms.
11	*
12	* The Freescale license terms can be reviewed in the file
13	*
14	* LICENSE.Freescale
15	*
16	* The generic mcf548x BSP has been developed on the basic
17	* structures and modules of the av5282 BSP.
18	*/
19
20	/*
21	* Copyright (c) 2007 embedded brains GmbH. All rights reserved.
22	*
23	* The license and distribution terms for this file may be
24	* found in the file LICENSE in this distribution or at
25	* http://www.rtems.org/license/LICENSE.
26	*/
27
28	/===============================================================\
29	\| Includes \|
30	\===============================================================/
31	#include <rtems/asm.h>
32	#include <bsp/linker-symbols.h>
33
34	/===============================================================\
35	\| External references \|
36	\===============================================================/
37	.extern __MBAR
38	.extern _CoreSramBase0
39	.extern _CoreSramBase1
40	.extern _CoreSramSize1
41	.extern mcf548x_init
42	.extern boot_card
43
44	/===============================================================\
45	\| Global symbols \|
46	\===============================================================/
47
48	.global interrupt_vector_table
49	.global spurious_int_count
50	.global start
51
52
53	/===============================================================\
54	\| Exception Table \|
55	\===============================================================/
56
57	.section ".vectors","ax" /* begin of vectors section */
58	PUBLIC (InterruptVectorTable)
59	SYM(InterruptVectorTable):
60	INITSP: .long _ISR_Stack_area_end /* Initial SP */
61	INITPC: .long start /* Initial PC */
62	vector002: .long asm_default_interrupt /* Access Error */
63	vector003: .long asm_default_interrupt /* Address Error */
64	vector004: .long asm_default_interrupt /* Illegal Instruction */
65	vector005: .long asm_default_interrupt /* Reserved */
66	vector006: .long asm_default_interrupt /* Reserved */
67	vector007: .long asm_default_interrupt /* Reserved */
68	vector008: .long asm_default_interrupt /* Privilege Violation */
69	vector009: .long asm_default_interrupt /* Trace */
70	vector010: .long asm_default_interrupt /* Unimplemented A-Line */
71	vector011: .long asm_default_interrupt /* Unimplemented F-Line */
72	vector012: .long asm_default_interrupt /* Debug Interrupt */
73	vector013: .long asm_default_interrupt /* Reserved */
74	vector014: .long asm_default_interrupt /* Format Error */
75	vector015: .long asm_default_interrupt /* Unitialized Int. */
76	vector016: .long asm_default_interrupt /* Reserved */
77	vector017: .long asm_default_interrupt /* Reserved */
78	vector018: .long asm_default_interrupt /* Reserved */
79	vector019: .long asm_default_interrupt /* Reserved */
80	vector020: .long asm_default_interrupt /* Reserved */
81	vector021: .long asm_default_interrupt /* Reserved */
82	vector022: .long asm_default_interrupt /* Reserved */
83	vector023: .long asm_default_interrupt /* Reserved */
84	vector024: .long asm_spurious_interrupt /* Spurious Interrupt */
85	vector025: .long asm_default_interrupt /* Autovector Level 1 */
86	vector026: .long asm_default_interrupt /* Autovector Level 2 */
87	vector027: .long asm_default_interrupt /* Autovector Level 3 */
88	vector028: .long asm_default_interrupt /* Autovector Level 4 */
89	vector029: .long asm_default_interrupt /* Autovector Level 5 */
90	vector030: .long asm_default_interrupt /* Autovector Level 6 */
91	vector031: .long asm_default_interrupt /* Autovector Level 7 */
92	vector032: .long asm_default_interrupt /* TRAP #0 */
93	vector033: .long asm_default_interrupt /* TRAP #1 */
94	vector034: .long asm_default_interrupt /* TRAP #2 */
95	vector035: .long asm_default_interrupt /* TRAP #3 */
96	vector036: .long asm_default_interrupt /* TRAP #4 */
97	vector037: .long asm_default_interrupt /* TRAP #5 */
98	vector038: .long asm_default_interrupt /* TRAP #6 */
99	vector039: .long asm_default_interrupt /* TRAP #7 */
100	vector040: .long asm_default_interrupt /* TRAP #8 */
101	vector041: .long asm_default_interrupt /* TRAP #9 */
102	vector042: .long asm_default_interrupt /* TRAP #10 */
103	vector043: .long asm_default_interrupt /* TRAP #11 */
104	vector044: .long asm_default_interrupt /* TRAP #12 */
105	vector045: .long asm_default_interrupt /* TRAP #13 */
106	vector046: .long asm_default_interrupt /* TRAP #14 */
107	vector047: .long asm_default_interrupt /* TRAP #15 */
108	vector048: .long asm_default_interrupt /* Reserved */
109	vector049: .long asm_default_interrupt /* Reserved */
110	vector050: .long asm_default_interrupt /* Reserved */
111	vector051: .long asm_default_interrupt /* Reserved */
112	vector052: .long asm_default_interrupt /* Reserved */
113	vector053: .long asm_default_interrupt /* Reserved */
114	vector054: .long asm_default_interrupt /* Reserved */
115	vector055: .long asm_default_interrupt /* Reserved */
116	vector056: .long asm_default_interrupt /* Reserved */
117	vector057: .long asm_default_interrupt /* Reserved */
118	vector058: .long asm_default_interrupt /* Reserved */
119	vector059: .long asm_default_interrupt /* Reserved */
120	vector060: .long asm_default_interrupt /* Reserved */
121	vector061: .long asm_default_interrupt /* Reserved */
122	vector062: .long asm_default_interrupt /* Reserved */
123	vector063: .long asm_default_interrupt /* Reserved */
124	vector064: .long asm_default_interrupt
125	vector065: .long asm_default_interrupt
126	vector066: .long asm_default_interrupt
127	vector067: .long asm_default_interrupt
128	vector068: .long asm_default_interrupt
129	vector069: .long asm_default_interrupt
130	vector070: .long asm_default_interrupt
131	vector071: .long asm_default_interrupt
132	vector072: .long asm_default_interrupt
133	vector073: .long asm_default_interrupt
134	vector074: .long asm_default_interrupt
135	vector075: .long asm_default_interrupt
136	vector076: .long asm_default_interrupt
137	vector077: .long asm_default_interrupt
138	vector078: .long asm_default_interrupt
139	vector079: .long asm_default_interrupt
140	vector080: .long asm_default_interrupt
141	vector081: .long asm_default_interrupt
142	vector082: .long asm_default_interrupt
143	vector083: .long asm_default_interrupt
144	vector084: .long asm_default_interrupt
145	vector085: .long asm_default_interrupt
146	vector086: .long asm_default_interrupt
147	vector087: .long asm_default_interrupt
148	vector088: .long asm_default_interrupt
149	vector089: .long asm_default_interrupt
150	vector090: .long asm_default_interrupt
151	vector091: .long asm_default_interrupt
152	vector092: .long asm_default_interrupt
153	vector093: .long asm_default_interrupt
154	vector094: .long asm_default_interrupt
155	vector095: .long asm_default_interrupt
156	vector096: .long asm_default_interrupt
157	vector097: .long asm_default_interrupt
158	vector098: .long asm_default_interrupt
159	vector099: .long asm_default_interrupt
160	vector100: .long asm_default_interrupt
161	vector101: .long asm_default_interrupt
162	vector102: .long asm_default_interrupt
163	vector103: .long asm_default_interrupt
164	vector104: .long asm_default_interrupt
165	vector105: .long asm_default_interrupt
166	vector106: .long asm_default_interrupt
167	vector107: .long asm_default_interrupt
168	vector108: .long asm_default_interrupt
169	vector109: .long asm_default_interrupt
170	vector110: .long asm_default_interrupt
171	vector111: .long asm_default_interrupt
172	vector112: .long asm_default_interrupt
173	vector113: .long asm_default_interrupt
174	vector114: .long asm_default_interrupt
175	vector115: .long asm_default_interrupt
176	vector116: .long asm_default_interrupt
177	vector117: .long asm_default_interrupt
178	vector118: .long asm_default_interrupt
179	vector119: .long asm_default_interrupt
180	vector120: .long asm_default_interrupt
181	vector121: .long asm_default_interrupt
182	vector122: .long asm_default_interrupt
183	vector123: .long asm_default_interrupt
184	vector124: .long asm_default_interrupt
185	vector125: .long asm_default_interrupt
186	vector126: .long asm_default_interrupt
187	vector127: .long asm_default_interrupt
188	vector128: .long asm_default_interrupt
189	vector129: .long asm_default_interrupt
190	vector130: .long asm_default_interrupt
191	vector131: .long asm_default_interrupt
192	vector132: .long asm_default_interrupt
193	vector133: .long asm_default_interrupt
194	vector134: .long asm_default_interrupt
195	vector135: .long asm_default_interrupt
196	vector136: .long asm_default_interrupt
197	vector137: .long asm_default_interrupt
198	vector138: .long asm_default_interrupt
199	vector139: .long asm_default_interrupt
200	vector140: .long asm_default_interrupt
201	vector141: .long asm_default_interrupt
202	vector142: .long asm_default_interrupt
203	vector143: .long asm_default_interrupt
204	vector144: .long asm_default_interrupt
205	vector145: .long asm_default_interrupt
206	vector146: .long asm_default_interrupt
207	vector147: .long asm_default_interrupt
208	vector148: .long asm_default_interrupt
209	vector149: .long asm_default_interrupt
210	vector150: .long asm_default_interrupt
211	vector151: .long asm_default_interrupt
212	vector152: .long asm_default_interrupt
213	vector153: .long asm_default_interrupt
214	vector154: .long asm_default_interrupt
215	vector155: .long asm_default_interrupt
216	vector156: .long asm_default_interrupt
217	vector157: .long asm_default_interrupt
218	vector158: .long asm_default_interrupt
219	vector159: .long asm_default_interrupt
220	vector160: .long asm_default_interrupt
221	vector161: .long asm_default_interrupt
222	vector162: .long asm_default_interrupt
223	vector163: .long asm_default_interrupt
224	vector164: .long asm_default_interrupt
225	vector165: .long asm_default_interrupt
226	vector166: .long asm_default_interrupt
227	vector167: .long asm_default_interrupt
228	vector168: .long asm_default_interrupt
229	vector169: .long asm_default_interrupt
230	vector170: .long asm_default_interrupt
231	vector171: .long asm_default_interrupt
232	vector172: .long asm_default_interrupt
233	vector173: .long asm_default_interrupt
234	vector174: .long asm_default_interrupt
235	vector175: .long asm_default_interrupt
236	vector176: .long asm_default_interrupt
237	vector177: .long asm_default_interrupt
238	vector178: .long asm_default_interrupt
239	vector179: .long asm_default_interrupt
240	vector180: .long asm_default_interrupt
241	vector181: .long asm_default_interrupt
242	vector182: .long asm_default_interrupt
243	vector183: .long asm_default_interrupt
244	vector184: .long asm_default_interrupt
245	vector185: .long asm_default_interrupt
246	vector186: .long asm_default_interrupt
247	vector187: .long asm_default_interrupt
248	vector188: .long asm_default_interrupt
249	vector189: .long asm_default_interrupt
250	vector190: .long asm_default_interrupt
251	vector191: .long asm_default_interrupt
252	vector192: .long asm_default_interrupt
253	vector193: .long asm_default_interrupt
254	vector194: .long asm_default_interrupt
255	vector195: .long asm_default_interrupt
256	vector196: .long asm_default_interrupt
257	vector197: .long asm_default_interrupt
258	vector198: .long asm_default_interrupt
259	vector199: .long asm_default_interrupt
260	vector200: .long asm_default_interrupt
261	vector201: .long asm_default_interrupt
262	vector202: .long asm_default_interrupt
263	vector203: .long asm_default_interrupt
264	vector204: .long asm_default_interrupt
265	vector205: .long asm_default_interrupt
266	vector206: .long asm_default_interrupt
267	vector207: .long asm_default_interrupt
268	vector208: .long asm_default_interrupt
269	vector209: .long asm_default_interrupt
270	vector210: .long asm_default_interrupt
271	vector211: .long asm_default_interrupt
272	vector212: .long asm_default_interrupt
273	vector213: .long asm_default_interrupt
274	vector214: .long asm_default_interrupt
275	vector215: .long asm_default_interrupt
276	vector216: .long asm_default_interrupt
277	vector217: .long asm_default_interrupt
278	vector218: .long asm_default_interrupt
279	vector219: .long asm_default_interrupt
280	vector220: .long asm_default_interrupt
281	vector221: .long asm_default_interrupt
282	vector222: .long asm_default_interrupt
283	vector223: .long asm_default_interrupt
284	vector224: .long asm_default_interrupt
285	vector225: .long asm_default_interrupt
286	vector226: .long asm_default_interrupt
287	vector227: .long asm_default_interrupt
288	vector228: .long asm_default_interrupt
289	vector229: .long asm_default_interrupt
290	vector230: .long asm_default_interrupt
291	vector231: .long asm_default_interrupt
292	vector232: .long asm_default_interrupt
293	vector233: .long asm_default_interrupt
294	vector234: .long asm_default_interrupt
295	vector235: .long asm_default_interrupt
296	vector236: .long asm_default_interrupt
297	vector237: .long asm_default_interrupt
298	vector238: .long asm_default_interrupt
299	vector239: .long asm_default_interrupt
300	vector240: .long asm_default_interrupt
301	vector241: .long asm_default_interrupt
302	vector242: .long asm_default_interrupt
303	vector243: .long asm_default_interrupt
304	vector244: .long asm_default_interrupt
305	vector245: .long asm_default_interrupt
306	vector246: .long asm_default_interrupt
307	vector247: .long asm_default_interrupt
308	vector248: .long asm_default_interrupt
309	vector249: .long asm_default_interrupt
310	vector250: .long asm_default_interrupt
311	vector251: .long asm_default_interrupt
312	vector252: .long asm_default_interrupt
313	vector253: .long asm_default_interrupt
314	vector254: .long asm_default_interrupt
315	vector255: .long asm_default_interrupt
316
317	/===============================================================\
318	\| Start of code \|
319	\===============================================================/
320	.text
321	PUBLIC (start)
322	SYM(start):
323	move.w #0x3700,sr /* disable interrupts */
324	jmp start_init
325
326	/===============================================================\
327	\| Sspurious interrupt counter \|
328	\===============================================================/
329	.align 4
330	.data /* begin of data section */
331	PUBLIC (spurious_int_count)
332	SYM(spurious_int_count):
333	.long 0 /* spurious interrupt counter */
334
335	/===============================================================\
336	\| Function: Default exception handler \|
337	+-----------------------------------------------------------------+
338	\| - stop and disable all interrupts \|
339	\| - loop forever \|
340	\===============================================================/
341	.text /* start of text section */
342	.align 4
343	PUBLIC (asm_default_interrupt)
344	SYM(asm_default_interrupt):
345	nop
346	stop #0x3700 /* stop */
347	bra.w asm_default_interrupt /* loop forever */
348
349	/===============================================================\
350	\| Function: Exception handler for spurious interrupts \|
351	+-----------------------------------------------------------------+
352	\| - count spurious interrupts \|
353	\===============================================================/
354	.align 4
355	PUBLIC (asm_spurious_interrupt)
356	SYM(asm_spurious_interrupt):
357	add.l #1,spurious_int_count
358	rte
359
360	/===============================================================\
361	\| Function: start_init \|
362	+-----------------------------------------------------------------+
363	\| - Disable all intterupts \|
364	\| - Setup the internal SRAM \|
365	\| - Initialize mcf548x peripherals \|
366	\| - Set initial stack pointer \|
367	\| - Boot RTEMS
368	\===============================================================/
369	.align 4
370	PUBLIC (start_init)
371	SYM(start_init):
372
373	move.l #0x01040100,d0 /* invalidate instruction/data/branch cache, disable all caches */
374	movec d0,cacr
375
376	move.l #_CoreSramBase0,d0 /* initialize RAMBAR0 */
377	add.l #0x21,d0 /* for code & data */
378	movec d0,rambar0
379
380	move.l #_CoreSramBase1,d0 /* initialize RAMBAR1 */
381	add.l #0x21,d0 /* for code & data */
382	movec d0,rambar1 /* movec d0,RAMBAR1 */
383
384	move.l #__MBAR,d0 /* initialize MBAR */
385	movec d0,mbar
386
387	move.l #_CoreSramBase1,d0 /* set sp to end of Core SRAM temporarily */
388	add.l #_CoreSramSize1,d0
389	move.l d0,sp
390
391	move.l #0,d0 /* initialize frame pointer */
392	movea.l d0,a6
393
394	jsr mcf548x_init /* Initialize mcf548x peripherals */
395
396	move.l #_ISR_Stack_area_end,sp /* relocate sp */
397
398	clrl d0 /* clear d0 */
399	movel d0,a7@- /* command line == 0 */
400
401	jsr boot_card /* boot rtems */
402
403	movel a7@+,d0
404
405	exit_multitasking:
406	nop
407	nop
408	halt
409	bra exit_multitasking
410
411	.end /* end of start.S module */
412
413
414

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