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Kconfig: Move config IDENT_STRING to Kconfig
[people/ms/u-boot.git] / arch / m68k / cpu / mcf5445x / start.S
CommitLineData
8ae158cd
TL		 1/*
2 * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
3 * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
4 *
45370e18
AW		 5 * Copyright 2010-2012 Freescale Semiconductor, Inc.
6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
7 *
3765b3e7 8 * SPDX-License-Identifier: GPL-2.0+
8ae158cd
TL		 9 */
10
45370e18 11#include <common.h>
25ddd1fb 12#include <asm-offsets.h>
8ae158cd 13#include <config.h>
45370e18 14#include <timestamp.h>
8ae158cd 15#include "version.h"
dd9f054e 16#include <asm/cache.h>
8ae158cd 17
8ae158cd
TL		 18#define _START _start
19#define _FAULT _fault
20
21#define SAVE_ALL \
22 move.w #0x2700,%sr; /* disable intrs */ \
23 subl #60,%sp; /* space for 15 regs */ \
24 moveml %d0-%d7/%a0-%a6,%sp@;
25
26#define RESTORE_ALL \
27 moveml %sp@,%d0-%d7/%a0-%a6; \
28 addl #60,%sp; /* space for 15 regs */ \
29 rte;
30
45370e18 31#if defined(CONFIG_SERIAL_BOOT)
5c928d02
AD		 32#define ASM_DRAMINIT (asm_dram_init - CONFIG_SYS_TEXT_BASE + \
33 CONFIG_SYS_INIT_RAM_ADDR)
61a4392a 34#define ASM_DRAMINIT_N (asm_dram_init - CONFIG_SYS_TEXT_BASE)
5c928d02
AD		 35#define ASM_SBF_IMG_HDR (asm_sbf_img_hdr - CONFIG_SYS_TEXT_BASE + \
36 CONFIG_SYS_INIT_RAM_ADDR)
9f751551
TL		 37#endif
38
8ae158cd 39.text
9f751551 40
8ae158cd 41/*
5c928d02
AD		 42 * Vector table. This is used for initial platform startup.
43 * These vectors are to catch any un-intended traps.
8ae158cd
TL		 44 */
45_vectors:
45370e18 46#if defined(CONFIG_SERIAL_BOOT)
9f751551 47
5c928d02 48INITSP: .long 0 /* Initial SP */
45370e18 49#ifdef CONFIG_CF_SBF
5c928d02 50INITPC: .long ASM_DRAMINIT /* Initial PC */
45370e18
AW		 51#endif
52#ifdef CONFIG_SYS_NAND_BOOT
5c928d02 53INITPC: .long ASM_DRAMINIT_N /* Initial PC */
45370e18 54#endif
9f751551
TL		 55
56#else
57
5c928d02
AD		 58INITSP: .long 0 /* Initial SP */
59INITPC: .long _START /* Initial PC */
9f751551
TL		 60
61#endif
8ae158cd 62
5c928d02
AD		 63vector02_0F:
64.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
65.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
8ae158cd
TL		 66
67/* Reserved */
68vector10_17:
69.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
70
5c928d02
AD		 71vector18_1F:
72.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
8ae158cd 73
45370e18 74#if !defined(CONFIG_SERIAL_BOOT)
9f751551 75
8ae158cd
TL		 76/* TRAP #0 - #15 */
77vector20_2F:
78.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
79.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
80
81/* Reserved */
82vector30_3F:
83.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
84.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
85
86vector64_127:
87.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
88.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
89.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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
96vector128_191:
97.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
98.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
99.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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
106vector192_255:
107.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
108.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
109.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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
9f751551 115#endif
8ae158cd 116
45370e18 117#if defined(CONFIG_SERIAL_BOOT)
9f751551
TL		 118 /* Image header: chksum 4 bytes, len 4 bytes, img dest 4 bytes */
119asm_sbf_img_hdr:
5c928d02
AD		 120 .long 0x00000000 /* checksum, not yet implemented */
121 .long 0x00040000 /* image length */
14d0a02a 122 .long CONFIG_SYS_TEXT_BASE /* image to be relocated at */
9f751551
TL		 123
124asm_dram_init:
5c928d02 125 move.w #0x2700,%sr /* Mask off Interrupt */
709b384b 126
45370e18
AW		 127#ifdef CONFIG_SYS_NAND_BOOT
128 /* for assembly stack */
129 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
130 movec %d0, %RAMBAR1
131
132 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
5c928d02 133 clr.l %sp@-
45370e18
AW		 134#endif
135
136#ifdef CONFIG_CF_SBF
709b384b
TL		 137 move.l #CONFIG_SYS_INIT_RAM_ADDR, %d0
138 movec %d0, %VBR
139
6d0f6bcf 140 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
709b384b
TL		 141 movec %d0, %RAMBAR1
142
143 /* initialize general use internal ram */
5c928d02
AD		 144 move.l #0, %d0
145 move.l #(ICACHE_STATUS), %a1 /* icache */
146 move.l #(DCACHE_STATUS), %a2 /* dcache */
147 move.l %d0, (%a1)
148 move.l %d0, (%a2)
709b384b
TL		 149
150 /* invalidate and disable cache */
dd9f054e 151 move.l #(CONFIG_SYS_ICACHE_INV + CONFIG_SYS_DCACHE_INV), %d0
709b384b
TL		 152 movec %d0, %CACR /* Invalidate cache */
153 move.l #0, %d0
154 movec %d0, %ACR0
155 movec %d0, %ACR1
156 movec %d0, %ACR2
157 movec %d0, %ACR3
158
6d0f6bcf 159 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
5c928d02 160 clr.l %sp@-
9f751551
TL		 161
162 /* Must disable global address */
163 move.l #0xFC008000, %a1
6d0f6bcf 164 move.l #(CONFIG_SYS_CS0_BASE), (%a1)
9f751551 165 move.l #0xFC008008, %a1
6d0f6bcf 166 move.l #(CONFIG_SYS_CS0_CTRL), (%a1)
9f751551 167 move.l #0xFC008004, %a1
6d0f6bcf 168 move.l #(CONFIG_SYS_CS0_MASK), (%a1)
5c928d02 169#endif /* CONFIG_CF_SBF */
45370e18
AW		 170
171#ifdef CONFIG_MCF5441x
172 /* TC: enable all peripherals,
173 in the future only enable certain peripherals */
174 move.l #0xFC04002D, %a1
9f751551 175
45370e18 176#if defined(CONFIG_CF_SBF)
5c928d02 177 move.b #23, (%a1) /* dspi */
45370e18 178#endif
5c928d02 179 move.b #46, (%a1) /* DDR */
45370e18
AW		 180
181 /* slew settings */
182 move.l #0xEC094060, %a1
183 move.b #0, (%a1)
184
185 /* use vco instead of cpu*2 clock for ddr clock */
186 move.l #0xEC09001A, %a1
187 move.w #0xE01D, (%a1)
188
189 /* DDR settings */
190 move.l #0xFC0B8180, %a1
191 move.l #0x00000000, (%a1)
192 move.l #0x40000000, (%a1)
193
194 move.l #0xFC0B81AC, %a1
195 move.l #0x01030203, (%a1)
196
197 move.l #0xFC0B8000, %a1
198 move.l #0x01010101, (%a1)+ /* 0x00 */
199 move.l #0x00000101, (%a1)+ /* 0x04 */
200 move.l #0x01010100, (%a1)+ /* 0x08 */
201 move.l #0x01010000, (%a1)+ /* 0x0C */
202 move.l #0x00010101, (%a1)+ /* 0x10 */
203 move.l #0xFC0B8018, %a1
204 move.l #0x00010100, (%a1)+ /* 0x18 */
205 move.l #0x00000001, (%a1)+ /* 0x1C */
206 move.l #0x01000001, (%a1)+ /* 0x20 */
207 move.l #0x00000100, (%a1)+ /* 0x24 */
208 move.l #0x00010001, (%a1)+ /* 0x28 */
209 move.l #0x00000200, (%a1)+ /* 0x2C */
210 move.l #0x01000002, (%a1)+ /* 0x30 */
211 move.l #0x00000000, (%a1)+ /* 0x34 */
212 move.l #0x00000100, (%a1)+ /* 0x38 */
213 move.l #0x02000100, (%a1)+ /* 0x3C */
214 move.l #0x02000407, (%a1)+ /* 0x40 */
215 move.l #0x02030007, (%a1)+ /* 0x44 */
216 move.l #0x02000100, (%a1)+ /* 0x48 */
217 move.l #0x0A030203, (%a1)+ /* 0x4C */
218 move.l #0x00020708, (%a1)+ /* 0x50 */
219 move.l #0x00050008, (%a1)+ /* 0x54 */
220 move.l #0x04030002, (%a1)+ /* 0x58 */
221 move.l #0x00000004, (%a1)+ /* 0x5C */
222 move.l #0x020A0000, (%a1)+ /* 0x60 */
223 move.l #0x0C00000E, (%a1)+ /* 0x64 */
224 move.l #0x00002004, (%a1)+ /* 0x68 */
225 move.l #0x00000000, (%a1)+ /* 0x6C */
226 move.l #0x00100010, (%a1)+ /* 0x70 */
227 move.l #0x00100010, (%a1)+ /* 0x74 */
228 move.l #0x00000000, (%a1)+ /* 0x78 */
229 move.l #0x07990000, (%a1)+ /* 0x7C */
230 move.l #0xFC0B80A0, %a1
231 move.l #0x00000000, (%a1)+ /* 0xA0 */
232 move.l #0x00C80064, (%a1)+ /* 0xA4 */
233 move.l #0x44520002, (%a1)+ /* 0xA8 */
234 move.l #0x00C80023, (%a1)+ /* 0xAC */
235 move.l #0xFC0B80B4, %a1
236 move.l #0x0000C350, (%a1) /* 0xB4 */
237 move.l #0xFC0B80E0, %a1
238 move.l #0x04000000, (%a1)+ /* 0xE0 */
239 move.l #0x03000304, (%a1)+ /* 0xE4 */
240 move.l #0x40040000, (%a1)+ /* 0xE8 */
241 move.l #0xC0004004, (%a1)+ /* 0xEC */
242 move.l #0x0642C000, (%a1)+ /* 0xF0 */
243 move.l #0x00000642, (%a1)+ /* 0xF4 */
244 move.l #0xFC0B8024, %a1
245 tpf
246 move.l #0x01000100, (%a1) /* 0x24 */
247
248 move.l #0x2000, %d1
249 jsr asm_delay
250#endif /* CONFIG_MCF5441x */
251
252#ifdef CONFIG_MCF5445x
709b384b 253 /* Dram Initialization a1, a2, and d0 */
9f751551
TL		 254 /* mscr sdram */
255 move.l #0xFC0A4074, %a1
6d0f6bcf 256 move.b #(CONFIG_SYS_SDRAM_DRV_STRENGTH), (%a1)
9f751551
TL		 257 nop
258
259 /* SDRAM Chip 0 and 1 */
260 move.l #0xFC0B8110, %a1
261 move.l #0xFC0B8114, %a2
262
263 /* calculate the size */
264 move.l #0x13, %d1
6d0f6bcf
JCPV		 265 move.l #(CONFIG_SYS_SDRAM_SIZE), %d2
266#ifdef CONFIG_SYS_SDRAM_BASE1
9f751551
TL		 267 lsr.l #1, %d2
268#endif
269
270dramsz_loop:
271 lsr.l #1, %d2
272 add.l #1, %d1
273 cmp.l #1, %d2
274 bne dramsz_loop
45370e18
AW		 275#ifdef CONFIG_SYS_NAND_BOOT
276 beq asm_nand_chk_status
277#endif
9f751551 278 /* SDRAM Chip 0 and 1 */
6d0f6bcf 279 move.l #(CONFIG_SYS_SDRAM_BASE), (%a1)
9f751551 280 or.l %d1, (%a1)
6d0f6bcf
JCPV		 281#ifdef CONFIG_SYS_SDRAM_BASE1
282 move.l #(CONFIG_SYS_SDRAM_BASE1), (%a2)
9f751551
TL		 283 or.l %d1, (%a2)
284#endif
285 nop
286
287 /* dram cfg1 and cfg2 */
288 move.l #0xFC0B8008, %a1
6d0f6bcf 289 move.l #(CONFIG_SYS_SDRAM_CFG1), (%a1)
9f751551
TL		 290 nop
291 move.l #0xFC0B800C, %a2
6d0f6bcf 292 move.l #(CONFIG_SYS_SDRAM_CFG2), (%a2)
9f751551
TL		 293 nop
294
295 move.l #0xFC0B8000, %a1 /* Mode */
296 move.l #0xFC0B8004, %a2 /* Ctrl */
297
9f751551 298 /* Issue PALL */
6d0f6bcf 299 move.l #(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
9f751551
TL		 300 nop
301
709b384b 302#ifdef CONFIG_M54455EVB
9f751551 303 /* Issue LEMR */
6d0f6bcf 304 move.l #(CONFIG_SYS_SDRAM_EMOD + 0x408), (%a1)
9f751551 305 nop
6d0f6bcf 306 move.l #(CONFIG_SYS_SDRAM_MODE + 0x300), (%a1)
9f751551 307 nop
9f751551
TL		 308#endif
309
709b384b
TL		 310 move.l #1000, %d1
311 jsr asm_delay
312
9f751551 313 /* Issue PALL */
6d0f6bcf 314 move.l #(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
9f751551
TL		 315 nop
316
317 /* Perform two refresh cycles */
6d0f6bcf 318 move.l #(CONFIG_SYS_SDRAM_CTRL + 4), %d0
9f751551
TL		 319 nop
320 move.l %d0, (%a2)
321 move.l %d0, (%a2)
322 nop
323
324#ifdef CONFIG_M54455EVB
6d0f6bcf 325 move.l #(CONFIG_SYS_SDRAM_MODE + 0x200), (%a1)
9f751551
TL		 326 nop
327#elif defined(CONFIG_M54451EVB)
328 /* Issue LEMR */
c3a9e637 329 move.l #(CONFIG_SYS_SDRAM_MODE), (%a1)
9f751551 330 nop
c3a9e637 331 move.l #(CONFIG_SYS_SDRAM_EMOD), (%a1)
9f751551
TL		 332#endif
333
709b384b
TL		 334 move.l #500, %d1
335 jsr asm_delay
9f751551 336
709b384b
TL		 337 move.l #(CONFIG_SYS_SDRAM_CTRL), %d1
338 and.l #0x7FFFFFFF, %d1
9f751551 339#ifdef CONFIG_M54455EVB
709b384b 340 or.l #0x10000C00, %d1
9f751551 341#elif defined(CONFIG_M54451EVB)
709b384b 342 or.l #0x10000C00, %d1
9f751551 343#endif
709b384b 344 move.l %d1, (%a2)
9f751551
TL		 345 nop
346
709b384b
TL		 347 move.l #2000, %d1
348 jsr asm_delay
5c928d02 349#endif /* CONFIG_MCF5445x */
709b384b 350
45370e18 351#ifdef CONFIG_CF_SBF
9f751551
TL		 352 /*
353 * DSPI Initialization
354 * a0 - general, sram - 0x80008000 - 32, see M54455EVB.h
355 * a1 - dspi status
356 * a2 - dtfr
357 * a3 - drfr
358 * a4 - Dst addr
359 */
360 /* Enable pins for DSPI mode - chip-selects are enabled later */
709b384b 361asm_dspi_init:
45370e18
AW		 362#ifdef CONFIG_MCF5441x
363 move.l #0xEC09404E, %a1
364 move.l #0xEC09404F, %a2
365 move.b #0xFF, (%a1)
366 move.b #0x80, (%a2)
367#endif
368
369#ifdef CONFIG_MCF5445x
9f751551
TL		 370 move.l #0xFC0A4063, %a0
371 move.b #0x7F, (%a0)
45370e18 372#endif
9f751551
TL		 373 /* Configure DSPI module */
374 move.l #0xFC05C000, %a0
375 move.l #0x80FF0C00, (%a0) /* Master, clear TX/RX FIFO */
376
377 move.l #0xFC05C00C, %a0
45370e18
AW		 378#ifdef CONFIG_MCF5441x
379 move.l #0x3E000016, (%a0)
380#endif
381#ifdef CONFIG_MCF5445x
9f751551 382 move.l #0x3E000011, (%a0)
45370e18 383#endif
9f751551
TL		 384
385 move.l #0xFC05C034, %a2 /* dtfr */
386 move.l #0xFC05C03B, %a3 /* drfr */
387
388 move.l #(ASM_SBF_IMG_HDR + 4), %a1
389 move.l (%a1)+, %d5
390 move.l (%a1), %a4
391
6d0f6bcf
JCPV		 392 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_SBFHDR_DATA_OFFSET), %a0
393 move.l #(CONFIG_SYS_SBFHDR_SIZE), %d4
9f751551
TL		 394
395 move.l #0xFC05C02C, %a1 /* dspi status */
396
397 /* Issue commands and address */
398 move.l #0x8002000B, %d2 /* Fast Read Cmd */
399 jsr asm_dspi_wr_status
400 jsr asm_dspi_rd_status
401
402 move.l #0x80020000, %d2 /* Address byte 2 */
403 jsr asm_dspi_wr_status
404 jsr asm_dspi_rd_status
405
406 move.l #0x80020000, %d2 /* Address byte 1 */
407 jsr asm_dspi_wr_status
408 jsr asm_dspi_rd_status
409
410 move.l #0x80020000, %d2 /* Address byte 0 */
411 jsr asm_dspi_wr_status
412 jsr asm_dspi_rd_status
413
414 move.l #0x80020000, %d2 /* Dummy Wr and Rd */
415 jsr asm_dspi_wr_status
416 jsr asm_dspi_rd_status
417
418 /* Transfer serial boot header to sram */
419asm_dspi_rd_loop1:
420 move.l #0x80020000, %d2
421 jsr asm_dspi_wr_status
422 jsr asm_dspi_rd_status
423
424 move.b %d1, (%a0) /* read, copy to dst */
425
426 add.l #1, %a0 /* inc dst by 1 */
427 sub.l #1, %d4 /* dec cnt by 1 */
428 bne asm_dspi_rd_loop1
429
430 /* Transfer u-boot from serial flash to memory */
431asm_dspi_rd_loop2:
432 move.l #0x80020000, %d2
433 jsr asm_dspi_wr_status
434 jsr asm_dspi_rd_status
435
436 move.b %d1, (%a4) /* read, copy to dst */
437
438 add.l #1, %a4 /* inc dst by 1 */
439 sub.l #1, %d5 /* dec cnt by 1 */
440 bne asm_dspi_rd_loop2
441
442 move.l #0x00020000, %d2 /* Terminate */
443 jsr asm_dspi_wr_status
444 jsr asm_dspi_rd_status
445
446 /* jump to memory and execute */
14d0a02a 447 move.l #(CONFIG_SYS_TEXT_BASE + 0x400), %a0
9f751551
TL		 448 jmp (%a0)
449
450asm_dspi_wr_status:
451 move.l (%a1), %d0 /* status */
452 and.l #0x0000F000, %d0
453 cmp.l #0x00003000, %d0
454 bgt asm_dspi_wr_status
455
456 move.l %d2, (%a2)
457 rts
458
459asm_dspi_rd_status:
460 move.l (%a1), %d0 /* status */
461 and.l #0x000000F0, %d0
462 lsr.l #4, %d0
463 cmp.l #0, %d0
464 beq asm_dspi_rd_status
465
466 move.b (%a3), %d1
467 rts
5c928d02 468#endif /* CONFIG_CF_SBF */
45370e18
AW		 469
470#ifdef CONFIG_SYS_NAND_BOOT
471 /* copy 4 boot pages to dram as soon as possible */
472 /* each page is 996 bytes (1056 total with 60 ECC bytes */
473 move.l #0x00000000, %a1 /* src */
61a4392a 474 move.l #CONFIG_SYS_TEXT_BASE, %a2 /* dst */
45370e18
AW		 475 move.l #0x3E0, %d0 /* sz in long */
476
477asm_boot_nand_copy:
478 move.l (%a1)+, (%a2)+
479 subq.l #1, %d0
480 bne asm_boot_nand_copy
481
482 /* jump to memory and execute */
483 move.l #(asm_nand_init), %a0
484 jmp (%a0)
485
486asm_nand_init:
487 /* exit nand boot-mode */
488 move.l #0xFC0FFF30, %a1
489 or.l #0x00000040, %d1
490 move.l %d1, (%a1)
491
492 /* initialize general use internal ram */
5c928d02
AD		 493 move.l #0, %d0
494 move.l #(CACR_STATUS), %a1 /* CACR */
495 move.l #(ICACHE_STATUS), %a2 /* icache */
496 move.l #(DCACHE_STATUS), %a3 /* dcache */
497 move.l %d0, (%a1)
498 move.l %d0, (%a2)
499 move.l %d0, (%a3)
45370e18
AW		 500
501 /* invalidate and disable cache */
502 move.l #0x01004100, %d0 /* Invalidate cache cmd */
503 movec %d0, %CACR /* Invalidate cache */
504 move.l #0, %d0
505 movec %d0, %ACR0
506 movec %d0, %ACR1
507 movec %d0, %ACR2
508 movec %d0, %ACR3
509
510 /* Must disable global address */
511 move.l #0xFC008000, %a1
512 move.l #(CONFIG_SYS_CS0_BASE), (%a1)
513 move.l #0xFC008008, %a1
514 move.l #(CONFIG_SYS_CS0_CTRL), (%a1)
515 move.l #0xFC008004, %a1
516 move.l #(CONFIG_SYS_CS0_MASK), (%a1)
517
518 /* NAND port configuration */
519 move.l #0xEC094048, %a1
520 move.b #0xFD, (%a1)+
521 move.b #0x5F, (%a1)+
522 move.b #0x04, (%a1)+
523
524 /* reset nand */
525 move.l #0xFC0FFF38, %a1 /* isr */
526 move.l #0x000e0000, (%a1)
527 move.l #0xFC0FFF08, %a2
528 move.l #0x00000000, (%a2)+ /* car */
529 move.l #0x11000000, (%a2)+ /* rar */
530 move.l #0x00000000, (%a2)+ /* rpt */
531 move.l #0x00000000, (%a2)+ /* rai */
532 move.l #0xFC0FFF2c, %a2 /* cfg */
533 move.l #0x00000000, (%a2)+ /* secsz */
534 move.l #0x000e0681, (%a2)+
535 move.l #0xFC0FFF04, %a2 /* cmd2 */
536 move.l #0xFF404001, (%a2)
537 move.l #0x000e0000, (%a1)
538
539 move.l #0x2000, %d1
540 jsr asm_delay
541
542 /* setup nand */
543 move.l #0xFC0FFF00, %a1
544 move.l #0x30700000, (%a1)+ /* cmd1 */
545 move.l #0x007EF000, (%a1)+ /* cmd2 */
546
547 move.l #0xFC0FFF2C, %a1
548 move.l #0x00000841, (%a1)+ /* secsz */
549 move.l #0x000e0681, (%a1)+ /* cfg */
550
551 move.l #100, %d4 /* 100 pages ~200KB */
552 move.l #4, %d2 /* start at 4 */
553 move.l #0xFC0FFF04, %a0 /* cmd2 */
554 move.l #0xFC0FFF0C, %a1 /* rar */
5c928d02 555 move.l #(CONFIG_SYS_TEXT_BASE + 0xF80), %a2
45370e18
AW		 556
557asm_nand_read:
558 move.l #0x11000000, %d0 /* rar */
559 or.l %d2, %d0
560 move.l %d0, (%a1)
561 add.l #1, %d2
562
563 move.l (%a0), %d0 /* cmd2 */
564 or.l #1, %d0
565 move.l %d0, (%a0)
566
567 move.l #0x200, %d1
568 jsr asm_delay
569
570asm_nand_chk_status:
571 move.l #0xFC0FFF38, %a4 /* isr */
572 move.l (%a4), %d0
573 and.l #0x40000000, %d0
574 tst.l %d0
575 beq asm_nand_chk_status
576
577 move.l #0xFC0FFF38, %a4 /* isr */
578 move.l (%a4), %d0
579 or.l #0x000E0000, %d0
580 move.l %d0, (%a4)
581
582 move.l #0x200, %d3
583 move.l #0xFC0FC000, %a3 /* buf 1 */
584asm_nand_copy:
585 move.l (%a3)+, (%a2)+
586 subq.l #1, %d3
587 bgt asm_nand_copy
588
589 subq.l #1, %d4
590 bgt asm_nand_read
591
592 /* jump to memory and execute */
61a4392a 593 move.l #(CONFIG_SYS_TEXT_BASE + 0x400), %a0
45370e18
AW		 594 jmp (%a0)
595
596#endif /* CONFIG_SYS_NAND_BOOT */
709b384b
TL		 597
598asm_delay:
599 nop
600 subq.l #1, %d1
601 bne asm_delay
602 rts
45370e18 603#endif /* CONFIG_CF_SBF || CONFIG_NAND_U_BOOT */
9f751551 604
5c928d02 605.text
9f751551 606 . = 0x400
5c928d02 607.globl _start
8ae158cd 608_start:
45370e18 609#if !defined(CONFIG_SERIAL_BOOT)
8ae158cd
TL		 610 nop
611 nop
5c928d02 612 move.w #0x2700,%sr /* Mask off Interrupt */
8ae158cd
TL		 613
614 /* Set vector base register at the beginning of the Flash */
6d0f6bcf 615 move.l #CONFIG_SYS_FLASH_BASE, %d0
8ae158cd
TL		 616 movec %d0, %VBR
617
6d0f6bcf 618 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
225a24b5 619 movec %d0, %RAMBAR1
8ae158cd
TL		 620
621 /* initialize general use internal ram */
5c928d02
AD		 622 move.l #0, %d0
623 move.l #(ICACHE_STATUS), %a1 /* icache */
624 move.l #(DCACHE_STATUS), %a2 /* dcache */
625 move.l %d0, (%a1)
626 move.l %d0, (%a2)
8ae158cd
TL		 627
628 /* invalidate and disable cache */
dd9f054e 629 move.l #(CONFIG_SYS_ICACHE_INV + CONFIG_SYS_DCACHE_INV), %d0
8ae158cd
TL		 630 movec %d0, %CACR /* Invalidate cache */
631 move.l #0, %d0
632 movec %d0, %ACR0
633 movec %d0, %ACR1
634 movec %d0, %ACR2
635 movec %d0, %ACR3
45370e18
AW		 636#else
637 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
638 movec %d0, %RAMBAR1
639#endif
8ae158cd 640
5044c9cc 641 /* put relocation table address to a5 */
5c928d02 642 move.l #__got_start, %a5
5044c9cc 643
644 /* setup stack initially on top of internal static ram */
5c928d02 645 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE), %sp
5044c9cc 646
647 /*
648 * if configured, malloc_f arena will be reserved first,
649 * then (and always) gd struct space will be reserved
650 */
651 move.l %sp, -(%sp)
652 move.l #board_init_f_alloc_reserve, %a1
653 jsr (%a1)
654
655 /* update stack and frame-pointers */
5c928d02
AD		 656 move.l %d0, %sp
657 move.l %sp, %fp
8ae158cd 658
5044c9cc 659 /* initialize reserved area */
5c928d02 660 move.l %d0, -(%sp)
5044c9cc 661 move.l #board_init_f_init_reserve, %a1
662 jsr (%a1)
8ae158cd 663
55ac54c4 664 /* run low-level CPU init code (from flash) */
5c928d02
AD		 665 move.l #cpu_init_f, %a1
666 jsr (%a1)
667
55ac54c4 668 /* run low-level board init code (from flash) */
5044c9cc 669 clr.l %sp@-
5c928d02
AD		 670 move.l #board_init_f, %a1
671 jsr (%a1)
8ae158cd
TL		 672
673 /* board_init_f() does not return */
674
5c928d02 675/******************************************************************************/
8ae158cd
TL		 676
677/*
678 * void relocate_code (addr_sp, gd, addr_moni)
679 *
680 * This "function" does not return, instead it continues in RAM
681 * after relocating the monitor code.
682 *
683 * r3 = dest
684 * r4 = src
685 * r5 = length in bytes
686 * r6 = cachelinesize
687 */
5c928d02 688.globl relocate_code
8ae158cd 689relocate_code:
5c928d02
AD		 690 link.w %a6,#0
691 move.l 8(%a6), %sp /* set new stack pointer */
8ae158cd 692
5c928d02
AD		 693 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
694 move.l 16(%a6), %a0 /* Save copy of Destination Address */
8ae158cd 695
5c928d02
AD		 696 move.l #CONFIG_SYS_MONITOR_BASE, %a1
697 move.l #__init_end, %a2
698 move.l %a0, %a3
8ae158cd
TL		 699
700 /* copy the code to RAM */
7011:
5c928d02
AD		 702 move.l (%a1)+, (%a3)+
703 cmp.l %a1,%a2
704 bgt.s 1b
8ae158cd
TL		 705
706/*
707 * We are done. Do not return, instead branch to second part of board
708 * initialization, now running from RAM.
709 */
710 move.l %a0, %a1
6d0f6bcf 711 add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
8ae158cd
TL		 712 jmp (%a1)
713
714in_ram:
715
716clear_bss:
717 /*
718 * Now clear BSS segment
719 */
720 move.l %a0, %a1
6d0f6bcf 721 add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
8ae158cd 722 move.l %a0, %d1
6d0f6bcf 723 add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
8ae158cd
TL		 7246:
725 clr.l (%a1)+
726 cmp.l %a1,%d1
727 bgt.s 6b
728
729 /*
730 * fix got table in RAM
731 */
732 move.l %a0, %a1
6d0f6bcf 733 add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
5c928d02 734 move.l %a1,%a5 /* fix got pointer register a5 */
8ae158cd
TL		 735
736 move.l %a0, %a2
6d0f6bcf 737 add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
8ae158cd
TL		 738
7397:
740 move.l (%a1),%d1
741 sub.l #_start,%d1
742 add.l %a0,%d1
743 move.l %d1,(%a1)+
744 cmp.l %a2, %a1
745 bne 7b
746
747 /* calculate relative jump to board_init_r in ram */
5c928d02
AD		 748 move.l %a0, %a1
749 add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
8ae158cd
TL		 750
751 /* set parameters for board_init_r */
5c928d02
AD		 752 move.l %a0,-(%sp) /* dest_addr */
753 move.l %d0,-(%sp) /* gd */
8ae158cd
TL		 754 jsr (%a1)
755
5c928d02
AD		 756/******************************************************************************/
757
8ae158cd 758/* exception code */
5c928d02 759.globl _fault
8ae158cd 760_fault:
5c928d02 761 bra _fault
8ae158cd 762
5c928d02 763.globl _exc_handler
8ae158cd
TL		 764_exc_handler:
765 SAVE_ALL
766 movel %sp,%sp@-
5c928d02 767 bsr exc_handler
8ae158cd
TL		 768 addql #4,%sp
769 RESTORE_ALL
770
5c928d02 771.globl _int_handler
8ae158cd
TL		 772_int_handler:
773 SAVE_ALL
774 movel %sp,%sp@-
5c928d02 775 bsr int_handler
8ae158cd
TL		 776 addql #4,%sp
777 RESTORE_ALL
778
5c928d02 779/******************************************************************************/
8ae158cd 780
5c928d02 781.globl version_string
8ae158cd 782version_string:
5c928d02
AD		 783.ascii U_BOOT_VERSION_STRING, "\0"
784.align 4
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