2 * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
3 * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #include <asm-offsets.h>
27 #include <asm/cache.h>
29 #ifndef CONFIG_IDENT_STRING
30 #define CONFIG_IDENT_STRING ""
37 move.w #0x2700,%sr; /* disable intrs */ \
38 subl #60,%sp; /* space for 15 regs */ \
39 moveml %d0-%d7/%a0-%a6,%sp@;
42 moveml %sp@,%d0-%d7/%a0-%a6; \
43 addl #60,%sp; /* space for 15 regs */ \
46 #if defined(CONFIG_CF_SBF)
47 #define ASM_DRAMINIT (asm_dram_init - CONFIG_SYS_TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR)
48 #define ASM_SBF_IMG_HDR (asm_sbf_img_hdr - CONFIG_SYS_TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR)
54 * Vector table. This is used for initial platform startup.
55 * These vectors are to catch any un-intended traps.
58 #if defined(CONFIG_CF_SBF)
60 INITSP: .long 0 /* Initial SP */
61 INITPC: .long ASM_DRAMINIT /* Initial PC */
65 INITSP: .long 0 /* Initial SP */
66 INITPC: .long _START /* Initial PC */
70 vector02: .long _FAULT /* Access Error */
71 vector03: .long _FAULT /* Address Error */
72 vector04: .long _FAULT /* Illegal Instruction */
73 vector05: .long _FAULT /* Reserved */
74 vector06: .long _FAULT /* Reserved */
75 vector07: .long _FAULT /* Reserved */
76 vector08: .long _FAULT /* Privilege Violation */
77 vector09: .long _FAULT /* Trace */
78 vector0A: .long _FAULT /* Unimplemented A-Line */
79 vector0B: .long _FAULT /* Unimplemented F-Line */
80 vector0C: .long _FAULT /* Debug Interrupt */
81 vector0D: .long _FAULT /* Reserved */
82 vector0E: .long _FAULT /* Format Error */
83 vector0F: .long _FAULT /* Unitialized Int. */
87 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
89 vector18: .long _FAULT /* Spurious Interrupt */
90 vector19: .long _FAULT /* Autovector Level 1 */
91 vector1A: .long _FAULT /* Autovector Level 2 */
92 vector1B: .long _FAULT /* Autovector Level 3 */
93 vector1C: .long _FAULT /* Autovector Level 4 */
94 vector1D: .long _FAULT /* Autovector Level 5 */
95 vector1E: .long _FAULT /* Autovector Level 6 */
96 vector1F: .long _FAULT /* Autovector Level 7 */
98 #if !defined(CONFIG_CF_SBF)
102 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
103 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
107 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
108 .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
118 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
121 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
122 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
123 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
124 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
125 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
126 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
127 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
128 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
131 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
132 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
133 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
134 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
135 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
136 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
137 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
138 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
141 #if defined(CONFIG_CF_SBF)
142 /* Image header: chksum 4 bytes, len 4 bytes, img dest 4 bytes */
144 .long 0x00000000 /* checksum, not yet implemented */
145 .long 0x00030000 /* image length */
146 .long CONFIG_SYS_TEXT_BASE /* image to be relocated at */
149 move.w #0x2700,%sr /* Mask off Interrupt */
151 move.l #CONFIG_SYS_INIT_RAM_ADDR, %d0
154 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
157 /* initialize general use internal ram */
159 move.l #(ICACHE_STATUS), %a1 /* icache */
160 move.l #(DCACHE_STATUS), %a2 /* dcache */
164 /* invalidate and disable cache */
165 move.l #(CONFIG_SYS_ICACHE_INV + CONFIG_SYS_DCACHE_INV), %d0
166 movec %d0, %CACR /* Invalidate cache */
173 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
176 /* Must disable global address */
177 move.l #0xFC008000, %a1
178 move.l #(CONFIG_SYS_CS0_BASE), (%a1)
179 move.l #0xFC008008, %a1
180 move.l #(CONFIG_SYS_CS0_CTRL), (%a1)
181 move.l #0xFC008004, %a1
182 move.l #(CONFIG_SYS_CS0_MASK), (%a1)
184 /* Dram Initialization a1, a2, and d0 */
186 move.l #0xFC0A4074, %a1
187 move.b #(CONFIG_SYS_SDRAM_DRV_STRENGTH), (%a1)
190 /* SDRAM Chip 0 and 1 */
191 move.l #0xFC0B8110, %a1
192 move.l #0xFC0B8114, %a2
194 /* calculate the size */
196 move.l #(CONFIG_SYS_SDRAM_SIZE), %d2
197 #ifdef CONFIG_SYS_SDRAM_BASE1
207 /* SDRAM Chip 0 and 1 */
208 move.l #(CONFIG_SYS_SDRAM_BASE), (%a1)
210 #ifdef CONFIG_SYS_SDRAM_BASE1
211 move.l #(CONFIG_SYS_SDRAM_BASE1), (%a2)
216 /* dram cfg1 and cfg2 */
217 move.l #0xFC0B8008, %a1
218 move.l #(CONFIG_SYS_SDRAM_CFG1), (%a1)
220 move.l #0xFC0B800C, %a2
221 move.l #(CONFIG_SYS_SDRAM_CFG2), (%a2)
224 move.l #0xFC0B8000, %a1 /* Mode */
225 move.l #0xFC0B8004, %a2 /* Ctrl */
228 move.l #(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
231 #ifdef CONFIG_M54455EVB
233 move.l #(CONFIG_SYS_SDRAM_EMOD + 0x408), (%a1)
235 move.l #(CONFIG_SYS_SDRAM_MODE + 0x300), (%a1)
243 move.l #(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
246 /* Perform two refresh cycles */
247 move.l #(CONFIG_SYS_SDRAM_CTRL + 4), %d0
253 #ifdef CONFIG_M54455EVB
254 move.l #(CONFIG_SYS_SDRAM_MODE + 0x200), (%a1)
256 #elif defined(CONFIG_M54451EVB)
258 move.l #(CONFIG_SYS_SDRAM_MODE), (%a1)
260 move.l #(CONFIG_SYS_SDRAM_EMOD), (%a1)
266 move.l #(CONFIG_SYS_SDRAM_CTRL), %d1
267 and.l #0x7FFFFFFF, %d1
268 #ifdef CONFIG_M54455EVB
269 or.l #0x10000C00, %d1
270 #elif defined(CONFIG_M54451EVB)
271 or.l #0x10000C00, %d1
280 * DSPI Initialization
281 * a0 - general, sram - 0x80008000 - 32, see M54455EVB.h
287 /* Enable pins for DSPI mode - chip-selects are enabled later */
289 move.l #0xFC0A4063, %a0
292 /* Configure DSPI module */
293 move.l #0xFC05C000, %a0
294 move.l #0x80FF0C00, (%a0) /* Master, clear TX/RX FIFO */
296 move.l #0xFC05C00C, %a0
297 move.l #0x3E000011, (%a0)
299 move.l #0xFC05C034, %a2 /* dtfr */
300 move.l #0xFC05C03B, %a3 /* drfr */
302 move.l #(ASM_SBF_IMG_HDR + 4), %a1
306 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_SBFHDR_DATA_OFFSET), %a0
307 move.l #(CONFIG_SYS_SBFHDR_SIZE), %d4
309 move.l #0xFC05C02C, %a1 /* dspi status */
311 /* Issue commands and address */
312 move.l #0x8002000B, %d2 /* Fast Read Cmd */
313 jsr asm_dspi_wr_status
314 jsr asm_dspi_rd_status
316 move.l #0x80020000, %d2 /* Address byte 2 */
317 jsr asm_dspi_wr_status
318 jsr asm_dspi_rd_status
320 move.l #0x80020000, %d2 /* Address byte 1 */
321 jsr asm_dspi_wr_status
322 jsr asm_dspi_rd_status
324 move.l #0x80020000, %d2 /* Address byte 0 */
325 jsr asm_dspi_wr_status
326 jsr asm_dspi_rd_status
328 move.l #0x80020000, %d2 /* Dummy Wr and Rd */
329 jsr asm_dspi_wr_status
330 jsr asm_dspi_rd_status
332 /* Transfer serial boot header to sram */
334 move.l #0x80020000, %d2
335 jsr asm_dspi_wr_status
336 jsr asm_dspi_rd_status
338 move.b %d1, (%a0) /* read, copy to dst */
340 add.l #1, %a0 /* inc dst by 1 */
341 sub.l #1, %d4 /* dec cnt by 1 */
342 bne asm_dspi_rd_loop1
344 /* Transfer u-boot from serial flash to memory */
346 move.l #0x80020000, %d2
347 jsr asm_dspi_wr_status
348 jsr asm_dspi_rd_status
350 move.b %d1, (%a4) /* read, copy to dst */
352 add.l #1, %a4 /* inc dst by 1 */
353 sub.l #1, %d5 /* dec cnt by 1 */
354 bne asm_dspi_rd_loop2
356 move.l #0x00020000, %d2 /* Terminate */
357 jsr asm_dspi_wr_status
358 jsr asm_dspi_rd_status
360 /* jump to memory and execute */
361 move.l #(CONFIG_SYS_TEXT_BASE + 0x400), %a0
365 move.l (%a1), %d0 /* status */
366 and.l #0x0000F000, %d0
367 cmp.l #0x00003000, %d0
368 bgt asm_dspi_wr_status
374 move.l (%a1), %d0 /* status */
375 and.l #0x000000F0, %d0
378 beq asm_dspi_rd_status
388 #endif /* CONFIG_CF_SBF */
394 #if !defined(CONFIG_CF_SBF)
397 move.w #0x2700,%sr /* Mask off Interrupt */
399 /* Set vector base register at the beginning of the Flash */
400 move.l #CONFIG_SYS_FLASH_BASE, %d0
403 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
406 /* initialize general use internal ram */
408 move.l #(ICACHE_STATUS), %a1 /* icache */
409 move.l #(DCACHE_STATUS), %a2 /* dcache */
413 /* invalidate and disable cache */
414 move.l #(CONFIG_SYS_ICACHE_INV + CONFIG_SYS_DCACHE_INV), %d0
415 movec %d0, %CACR /* Invalidate cache */
422 /* set stackpointer to end of internal ram to get some stackspace for
424 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
428 move.l #__got_start, %a5 /* put relocation table address to a5 */
430 bsr cpu_init_f /* run low-level CPU init code (from flash) */
431 bsr board_init_f /* run low-level board init code (from flash) */
433 /* board_init_f() does not return */
435 /*------------------------------------------------------------------------------*/
438 * void relocate_code (addr_sp, gd, addr_moni)
440 * This "function" does not return, instead it continues in RAM
441 * after relocating the monitor code.
445 * r5 = length in bytes
451 move.l 8(%a6), %sp /* set new stack pointer */
453 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
454 move.l 16(%a6), %a0 /* Save copy of Destination Address */
456 move.l #CONFIG_SYS_MONITOR_BASE, %a1
457 move.l #__init_end, %a2
460 /* copy the code to RAM */
462 move.l (%a1)+, (%a3)+
467 * We are done. Do not return, instead branch to second part of board
468 * initialization, now running from RAM.
471 add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
478 * Now clear BSS segment
481 add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
483 add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
490 * fix got table in RAM
493 add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
494 move.l %a1,%a5 /* * fix got pointer register a5 */
497 add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
507 /* calculate relative jump to board_init_r in ram */
509 add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
511 /* set parameters for board_init_r */
512 move.l %a0,-(%sp) /* dest_addr */
513 move.l %d0,-(%sp) /* gd */
516 /*------------------------------------------------------------------------------*/
538 /*------------------------------------------------------------------------------*/
540 .globl version_string
542 .ascii U_BOOT_VERSION_STRING, "\0"