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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 5044c9cc6c4dffb2959769a785663f46cb418461 / . / arch / m68k / cpu / mcf5227x / start.S
blob: 13c036f746edd5d3750bb87515785b72f4472220 [file] [log] [blame]
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]1/*
2 * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
3 * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
4 *
Wolfgang Denk3765b3e2013-10-07 13:07:26 +0200[diff] [blame]5 * SPDX-License-Identifier: GPL-2.0+
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]6 */
7
Wolfgang Denk25ddd1f2010-10-26 14:34:52 +0200[diff] [blame]8#include <asm-offsets.h>
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]9#include <config.h>
10#include "version.h"
TsiChung Liewdd9f0542010-03-11 22:12:53 -0600[diff] [blame]11#include <asm/cache.h>
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]12
13#ifndef CONFIG_IDENT_STRING
14#define CONFIG_IDENT_STRING ""
15#endif
16
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]17#define _START _start
18#define _FAULT _fault
19
20#define SAVE_ALL \
21 move.w #0x2700,%sr; /* disable intrs */ \
22 subl #60,%sp; /* space for 15 regs */ \
23 moveml %d0-%d7/%a0-%a6,%sp@;
24
25#define RESTORE_ALL \
26 moveml %sp@,%d0-%d7/%a0-%a6; \
27 addl #60,%sp; /* space for 15 regs */ \
28 rte;
29
TsiChung Liewa21d0c22008-10-21 15:37:02 +0000[diff] [blame]30#if defined(CONFIG_CF_SBF)
Wolfgang Denk14d0a022010-10-07 21:51:12 +0200[diff] [blame]31#define ASM_DRAMINIT (asm_dram_init - CONFIG_SYS_TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR)
32#define ASM_SBF_IMG_HDR (asm_sbf_img_hdr - CONFIG_SYS_TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR)
TsiChung Liewa21d0c22008-10-21 15:37:02 +0000[diff] [blame]33#endif
34
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]35.text
36/*
37 * Vector table. This is used for initial platform startup.
38 * These vectors are to catch any un-intended traps.
39 */
40_vectors:
41
TsiChung Liewa21d0c22008-10-21 15:37:02 +0000[diff] [blame]42#if defined(CONFIG_CF_SBF)
43INITSP: .long 0 /* Initial SP */
44INITPC: .long ASM_DRAMINIT /* Initial PC */
45#else
46INITSP: .long 0 /* Initial SP */
47INITPC: .long _START /* Initial PC */
48#endif
49
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]50vector02: .long _FAULT /* Access Error */
51vector03: .long _FAULT /* Address Error */
52vector04: .long _FAULT /* Illegal Instruction */
53vector05: .long _FAULT /* Reserved */
54vector06: .long _FAULT /* Reserved */
55vector07: .long _FAULT /* Reserved */
56vector08: .long _FAULT /* Privilege Violation */
57vector09: .long _FAULT /* Trace */
58vector0A: .long _FAULT /* Unimplemented A-Line */
59vector0B: .long _FAULT /* Unimplemented F-Line */
60vector0C: .long _FAULT /* Debug Interrupt */
61vector0D: .long _FAULT /* Reserved */
62vector0E: .long _FAULT /* Format Error */
63vector0F: .long _FAULT /* Unitialized Int. */
64
65/* Reserved */
66vector10_17:
67.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
68
69vector18: .long _FAULT /* Spurious Interrupt */
70vector19: .long _FAULT /* Autovector Level 1 */
71vector1A: .long _FAULT /* Autovector Level 2 */
72vector1B: .long _FAULT /* Autovector Level 3 */
73vector1C: .long _FAULT /* Autovector Level 4 */
74vector1D: .long _FAULT /* Autovector Level 5 */
75vector1E: .long _FAULT /* Autovector Level 6 */
76vector1F: .long _FAULT /* Autovector Level 7 */
77
TsiChung Liewa21d0c22008-10-21 15:37:02 +0000[diff] [blame]78#if !defined(CONFIG_CF_SBF)
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]79/* TRAP #0 - #15 */
80vector20_2F:
81.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
82.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
83
84/* Reserved */
85vector30_3F:
86.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
87.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
88
89vector64_127:
90.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
91.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
92.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
93.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
94.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
95.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
96.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
97.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
98
99vector128_191:
100.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
101.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
102.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
103.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
104.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
105.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
106.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
107.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
108
109vector192_255:
110.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
111.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
112.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
113.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
114.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
115.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
116.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
117.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
TsiChung Liewa21d0c22008-10-21 15:37:02 +0000[diff] [blame]118#endif
119
120#if defined(CONFIG_CF_SBF)
121 /* Image header: chksum 4 bytes, len 4 bytes, img dest 4 bytes */
122asm_sbf_img_hdr:
123 .long 0x00000000 /* checksum, not yet implemented */
124 .long 0x00020000 /* image length */
Wolfgang Denk14d0a022010-10-07 21:51:12 +0200[diff] [blame]125 .long CONFIG_SYS_TEXT_BASE /* image to be relocated at */
TsiChung Liewa21d0c22008-10-21 15:37:02 +0000[diff] [blame]126
127asm_dram_init:
128 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
129 movec %d0, %RAMBAR1 /* init Rambar */
130 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
131 clr.l %sp@-
132
133 /* Must disable global address */
134 move.l #0xFC008000, %a1
135 move.l #(CONFIG_SYS_CS0_BASE), (%a1)
136 move.l #0xFC008008, %a1
137 move.l #(CONFIG_SYS_CS0_CTRL), (%a1)
138 move.l #0xFC008004, %a1
139 move.l #(CONFIG_SYS_CS0_MASK), (%a1)
140
141 /*
142 * Dram Initialization
143 * a1, a2, and d0
144 */
145 /* mscr sdram */
146 move.l #0xFC0A4074, %a1
147 move.b #(CONFIG_SYS_SDRAM_DRV_STRENGTH), (%a1)
148 nop
149
150 /* SDRAM Chip 0 and 1 */
151 move.l #0xFC0B8110, %a1
152 move.l #0xFC0B8114, %a2
153
154 /* calculate the size */
155 move.l #0x13, %d1
156 move.l #(CONFIG_SYS_SDRAM_SIZE), %d2
157#ifdef CONFIG_SYS_SDRAM_BASE1
158 lsr.l #1, %d2
159#endif
160
161dramsz_loop:
162 lsr.l #1, %d2
163 add.l #1, %d1
164 cmp.l #1, %d2
165 bne dramsz_loop
166
167 /* SDRAM Chip 0 and 1 */
168 move.l #(CONFIG_SYS_SDRAM_BASE), (%a1)
169 or.l %d1, (%a1)
170#ifdef CONFIG_SYS_SDRAM_BASE1
171 move.l #(CONFIG_SYS_SDRAM_BASE1), (%a2)
172 or.l %d1, (%a2)
173#endif
174 nop
175
176 /* dram cfg1 and cfg2 */
177 move.l #0xFC0B8008, %a1
178 move.l #(CONFIG_SYS_SDRAM_CFG1), (%a1)
179 nop
180 move.l #0xFC0B800C, %a2
181 move.l #(CONFIG_SYS_SDRAM_CFG2), (%a2)
182 nop
183
184 move.l #0xFC0B8000, %a1 /* Mode */
185 move.l #0xFC0B8004, %a2 /* Ctrl */
186
187 /* Issue PALL */
188 move.l #(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
189 nop
190
191 /* Issue LEMR */
192 move.l #(CONFIG_SYS_SDRAM_MODE), (%a1)
193 nop
194 move.l #(CONFIG_SYS_SDRAM_EMOD), (%a1)
195 nop
196
197 move.l #1000, %d0
198wait1000:
199 nop
200 subq.l #1, %d0
201 bne wait1000
202
203 /* Issue PALL */
204 move.l #(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
205 nop
206
207 /* Perform two refresh cycles */
208 move.l #(CONFIG_SYS_SDRAM_CTRL + 4), %d0
209 nop
210 move.l %d0, (%a2)
211 move.l %d0, (%a2)
212 nop
213
214 move.l #(CONFIG_SYS_SDRAM_CTRL), %d0
215 and.l #0x7FFFFFFF, %d0
216 or.l #0x10000c00, %d0
217 move.l %d0, (%a2)
218 nop
219
220 /*
221 * DSPI Initialization
222 * a0 - general, sram - 0x80008000 - 32, see M52277EVB.h
223 * a1 - dspi status
224 * a2 - dtfr
225 * a3 - drfr
226 * a4 - Dst addr
227 */
228
229 /* Enable pins for DSPI mode - chip-selects are enabled later */
230 move.l #0xFC0A4036, %a0
231 move.b #0x3F, %d0
232 move.b %d0, (%a0)
233
234 /* DSPI CS */
235#ifdef CONFIG_SYS_DSPI_CS0
236 move.b (%a0), %d0
237 or.l #0xC0, %d0
238 move.b %d0, (%a0)
239#endif
240#ifdef CONFIG_SYS_DSPI_CS2
241 move.l #0xFC0A4037, %a0
242 move.b (%a0), %d0
243 or.l #0x10, %d0
244 move.b %d0, (%a0)
245#endif
246 nop
247
248 /* Configure DSPI module */
249 move.l #0xFC05C000, %a0
250 move.l #0x80FF0C00, (%a0) /* Master, clear TX/RX FIFO */
251
252 move.l #0xFC05C00C, %a0
253 move.l #0x3E000011, (%a0)
254
255 move.l #0xFC05C034, %a2 /* dtfr */
256 move.l #0xFC05C03B, %a3 /* drfr */
257
258 move.l #(ASM_SBF_IMG_HDR + 4), %a1
259 move.l (%a1)+, %d5
260 move.l (%a1), %a4
261
262 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_SBFHDR_DATA_OFFSET), %a0
263 move.l #(CONFIG_SYS_SBFHDR_SIZE), %d4
264
265 move.l #0xFC05C02C, %a1 /* dspi status */
266
267 /* Issue commands and address */
268 move.l #0x8004000B, %d2 /* Fast Read Cmd */
269 jsr asm_dspi_wr_status
270 jsr asm_dspi_rd_status
271
272 move.l #0x80040000, %d2 /* Address byte 2 */
273 jsr asm_dspi_wr_status
274 jsr asm_dspi_rd_status
275
276 move.l #0x80040000, %d2 /* Address byte 1 */
277 jsr asm_dspi_wr_status
278 jsr asm_dspi_rd_status
279
280 move.l #0x80040000, %d2 /* Address byte 0 */
281 jsr asm_dspi_wr_status
282 jsr asm_dspi_rd_status
283
284 move.l #0x80040000, %d2 /* Dummy Wr and Rd */
285 jsr asm_dspi_wr_status
286 jsr asm_dspi_rd_status
287
288 /* Transfer serial boot header to sram */
289asm_dspi_rd_loop1:
290 move.l #0x80040000, %d2
291 jsr asm_dspi_wr_status
292 jsr asm_dspi_rd_status
293
294 move.b %d1, (%a0) /* read, copy to dst */
295
296 add.l #1, %a0 /* inc dst by 1 */
297 sub.l #1, %d4 /* dec cnt by 1 */
298 bne asm_dspi_rd_loop1
299
300 /* Transfer u-boot from serial flash to memory */
301asm_dspi_rd_loop2:
302 move.l #0x80040000, %d2
303 jsr asm_dspi_wr_status
304 jsr asm_dspi_rd_status
305
306 move.b %d1, (%a4) /* read, copy to dst */
307
308 add.l #1, %a4 /* inc dst by 1 */
309 sub.l #1, %d5 /* dec cnt by 1 */
310 bne asm_dspi_rd_loop2
311
312 move.l #0x00040000, %d2 /* Terminate */
313 jsr asm_dspi_wr_status
314 jsr asm_dspi_rd_status
315
316 /* jump to memory and execute */
Wolfgang Denk14d0a022010-10-07 21:51:12 +0200[diff] [blame]317 move.l #(CONFIG_SYS_TEXT_BASE + 0x400), %a0
TsiChung Liewa21d0c22008-10-21 15:37:02 +0000[diff] [blame]318 move.l %a0, (%a1)
319 jmp (%a0)
320
321asm_dspi_wr_status:
322 move.l (%a1), %d0 /* status */
323 and.l #0x0000F000, %d0
324 cmp.l #0x00003000, %d0
325 bgt asm_dspi_wr_status
326
327 move.l %d2, (%a2)
328 rts
329
330asm_dspi_rd_status:
331 move.l (%a1), %d0 /* status */
332 and.l #0x000000F0, %d0
333 lsr.l #4, %d0
334 cmp.l #0, %d0
335 beq asm_dspi_rd_status
336
337 move.b (%a3), %d1
338 rts
339#endif /* CONFIG_CF_SBF */
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]340
341 .text
TsiChung Liewa21d0c22008-10-21 15:37:02 +0000[diff] [blame]342 . = 0x400
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]343 .globl _start
344_start:
345 nop
346 nop
347 move.w #0x2700,%sr /* Mask off Interrupt */
348
349 /* Set vector base register at the beginning of the Flash */
TsiChung Liewa21d0c22008-10-21 15:37:02 +0000[diff] [blame]350#if defined(CONFIG_CF_SBF)
Wolfgang Denk14d0a022010-10-07 21:51:12 +0200[diff] [blame]351 move.l #CONFIG_SYS_TEXT_BASE, %d0
TsiChung Liewa21d0c22008-10-21 15:37:02 +0000[diff] [blame]352 movec %d0, %VBR
353#else
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]354 move.l #CONFIG_SYS_FLASH_BASE, %d0
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]355 movec %d0, %VBR
356
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]357 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]358 movec %d0, %RAMBAR1
TsiChung Liewa21d0c22008-10-21 15:37:02 +0000[diff] [blame]359#endif
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]360
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]361 /* invalidate and disable cache */
TsiChung Liewdd9f0542010-03-11 22:12:53 -0600[diff] [blame]362 move.l #CF_CACR_CINV, %d0 /* Invalidate cache cmd */
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]363 movec %d0, %CACR /* Invalidate cache */
364 move.l #0, %d0
365 movec %d0, %ACR0
366 movec %d0, %ACR1
367
TsiChung Liewdd9f0542010-03-11 22:12:53 -0600[diff] [blame]368 /* initialize general use internal ram */
369 move.l #0, %d0
370 move.l #(ICACHE_STATUS), %a1 /* icache */
371 move.l #(DCACHE_STATUS), %a2 /* icache */
372 move.l %d0, (%a1)
373 move.l %d0, (%a2)
374
angelo@sysam.it5044c9c2016-04-27 21:50:44 +0200[diff] [blame^]375 /* put relocation table address to a5 */
376 move.l #__got_start, %a5
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]377
angelo@sysam.it5044c9c2016-04-27 21:50:44 +0200[diff] [blame^]378 /* setup stack initially on top of internal static ram */
379 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE), %sp
380
381 /*
382 * if configured, malloc_f arena will be reserved first,
383 * then (and always) gd struct space will be reserved
384 */
385 move.l %sp, -(%sp)
386 bsr board_init_f_alloc_reserve
387
388 /* update stack and frame-pointers */
389 move.l %d0, %sp
390 move.l %sp, %fp
391
392 /* initialize reserved area */
393 move.l %d0, -(%sp)
394 bsr board_init_f_init_reserve
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]395
396 bsr cpu_init_f /* run low-level CPU init code (from flash) */
angelo@sysam.it5044c9c2016-04-27 21:50:44 +0200[diff] [blame^]397 clr.l %sp@-
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]398 bsr board_init_f /* run low-level board init code (from flash) */
399
400 /* board_init_f() does not return */
401
402/*------------------------------------------------------------------------------*/
403
404/*
405 * void relocate_code (addr_sp, gd, addr_moni)
406 *
407 * This "function" does not return, instead it continues in RAM
408 * after relocating the monitor code.
409 *
410 * r3 = dest
411 * r4 = src
412 * r5 = length in bytes
413 * r6 = cachelinesize
414 */
415 .globl relocate_code
416relocate_code:
417 link.w %a6,#0
418 move.l 8(%a6), %sp /* set new stack pointer */
419
420 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
421 move.l 16(%a6), %a0 /* Save copy of Destination Address */
422
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]423 move.l #CONFIG_SYS_MONITOR_BASE, %a1
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]424 move.l #__init_end, %a2
425 move.l %a0, %a3
426
427 /* copy the code to RAM */
4281:
429 move.l (%a1)+, (%a3)+
430 cmp.l %a1,%a2
431 bgt.s 1b
432
433/*
434 * We are done. Do not return, instead branch to second part of board
435 * initialization, now running from RAM.
436 */
437 move.l %a0, %a1
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]438 add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]439 jmp (%a1)
440
441in_ram:
442
443clear_bss:
444 /*
445 * Now clear BSS segment
446 */
447 move.l %a0, %a1
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]448 add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]449 move.l %a0, %d1
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]450 add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]4516:
452 clr.l (%a1)+
453 cmp.l %a1,%d1
454 bgt.s 6b
455
456 /*
457 * fix got table in RAM
458 */
459 move.l %a0, %a1
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]460 add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]461 move.l %a1,%a5 /* * fix got pointer register a5 */
462
463 move.l %a0, %a2
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]464 add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]465
4667:
467 move.l (%a1),%d1
468 sub.l #_start,%d1
469 add.l %a0,%d1
470 move.l %d1,(%a1)+
471 cmp.l %a2, %a1
472 bne 7b
473
474 /* calculate relative jump to board_init_r in ram */
475 move.l %a0, %a1
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200[diff] [blame]476 add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]477
478 /* set parameters for board_init_r */
479 move.l %a0,-(%sp) /* dest_addr */
480 move.l %d0,-(%sp) /* gd */
481 jsr (%a1)
482
483/*------------------------------------------------------------------------------*/
484/* exception code */
485 .globl _fault
486_fault:
Marek Vasut37d6cc32012-10-03 13:28:43 +0000[diff] [blame]487 bra _fault
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]488 .globl _exc_handler
489
490_exc_handler:
491 SAVE_ALL
492 movel %sp,%sp@-
493 bsr exc_handler
494 addql #4,%sp
495 RESTORE_ALL
496
497 .globl _int_handler
498_int_handler:
499 SAVE_ALL
500 movel %sp,%sp@-
501 bsr int_handler
502 addql #4,%sp
503 RESTORE_ALL
504
505/*------------------------------------------------------------------------------*/
TsiChungLiewc8758102008-01-14 17:46:19 -0600[diff] [blame]506
507 .globl version_string
508version_string:
Andreas Bießmann09c2e902011-07-18 20:24:04 +0200[diff] [blame]509 .ascii U_BOOT_VERSION_STRING, "\0"
TsiChung Liew9b464322008-03-28 08:47:45 -0500[diff] [blame]510 .align 4