2 * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
3 * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
5 * (C) Copyright 2004-2008 Freescale Semiconductor, Inc.
6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 #include <timestamp.h>
31 #ifndef CONFIG_IDENT_STRING
32 #define CONFIG_IDENT_STRING ""
39 move.w #0x2700,%sr; /* disable intrs */ \
40 subl #60,%sp; /* space for 15 regs */ \
41 moveml %d0-%d7/%a0-%a6,%sp@;
44 moveml %sp@,%d0-%d7/%a0-%a6; \
45 addl #60,%sp; /* space for 15 regs */ \
48 #if !defined(CONFIG_MONITOR_IS_IN_RAM)
51 * Vector table. This is used for initial platform startup.
52 * These vectors are to catch any un-intended traps.
56 INITSP: .long 0x00000000 /* Initial SP */
57 INITPC: .long _START /* Initial PC */
58 vector02: .long _FAULT /* Access Error */
59 vector03: .long _FAULT /* Address Error */
60 vector04: .long _FAULT /* Illegal Instruction */
61 vector05: .long _FAULT /* Reserved */
62 vector06: .long _FAULT /* Reserved */
63 vector07: .long _FAULT /* Reserved */
64 vector08: .long _FAULT /* Privilege Violation */
65 vector09: .long _FAULT /* Trace */
66 vector0A: .long _FAULT /* Unimplemented A-Line */
67 vector0B: .long _FAULT /* Unimplemented F-Line */
68 vector0C: .long _FAULT /* Debug Interrupt */
69 vector0D: .long _FAULT /* Reserved */
70 vector0E: .long _FAULT /* Format Error */
71 vector0F: .long _FAULT /* Unitialized Int. */
75 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
77 vector18: .long _FAULT /* Spurious Interrupt */
78 vector19: .long _FAULT /* Autovector Level 1 */
79 vector1A: .long _FAULT /* Autovector Level 2 */
80 vector1B: .long _FAULT /* Autovector Level 3 */
81 vector1C: .long _FAULT /* Autovector Level 4 */
82 vector1D: .long _FAULT /* Autovector Level 5 */
83 vector1E: .long _FAULT /* Autovector Level 6 */
84 vector1F: .long _FAULT /* Autovector Level 7 */
88 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
89 .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
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
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
117 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
118 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
119 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
120 .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 #endif /* !defined(CONFIG_MONITOR_IS_IN_RAM) */
133 move.w #0x2700,%sr /* Mask off Interrupt */
135 #if !defined(CONFIG_MONITOR_IS_IN_RAM)
136 /* Set vector base register at the beginning of the Flash */
137 move.l #CONFIG_SYS_FLASH_BASE, %d0
141 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
144 /* invalidate and disable cache */
145 move.l #0x01000000, %d0 /* Invalidate cache cmd */
146 movec %d0, %CACR /* Invalidate cache */
151 #ifdef CONFIG_MCF5301x
152 move.l #(0xFC0a0010), %a0
159 /* initialize general use internal ram */
161 move.l #(CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-8), %a1
162 move.l #(CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-4), %a2
166 /* set stackpointer to end of internal ram to get some stackspace for the
168 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
171 move.l #__got_start, %a5 /* put relocation table address to a5 */
173 bsr cpu_init_f /* run low-level CPU init code (from flash) */
174 bsr board_init_f /* run low-level board init code (from flash) */
176 /* board_init_f() does not return */
178 /*------------------------------------------------------------------------------*/
181 * void relocate_code (addr_sp, gd, addr_moni)
183 * This "function" does not return, instead it continues in RAM
184 * after relocating the monitor code.
188 * r5 = length in bytes
194 move.l 8(%a6), %sp /* set new stack pointer */
196 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
197 move.l 16(%a6), %a0 /* Save copy of Destination Address */
199 move.l #CONFIG_SYS_MONITOR_BASE, %a1
200 move.l #__init_end, %a2
203 /* copy the code to RAM */
205 move.l (%a1)+, (%a3)+
210 * We are done. Do not return, instead branch to second part of board
211 * initialization, now running from RAM.
214 add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
221 * Now clear BSS segment
224 add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
226 add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
233 * fix got table in RAM
236 add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
237 move.l %a1,%a5 /* * fix got pointer register a5 */
240 add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
250 /* calculate relative jump to board_init_r in ram */
252 add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
254 /* set parameters for board_init_r */
255 move.l %a0,-(%sp) /* dest_addr */
256 move.l %d0,-(%sp) /* gd */
259 /*------------------------------------------------------------------------------*/
281 /*------------------------------------------------------------------------------*/
282 /* cache functions */
285 move.l #0x01000000, %d0 /* Invalidate cache cmd */
286 movec %d0, %CACR /* Invalidate cache */
287 move.l #(CONFIG_SYS_SDRAM_BASE + 0xc000 + ((CONFIG_SYS_SDRAM_SIZE & 0x1fe0 - 1) << 16)), %d0
288 movec %d0, %ACR0 /* Enable cache */
290 move.l #0x80000200, %d0 /* Setup cache mask */
291 movec %d0, %CACR /* Enable cache */
294 move.l #(CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-8), %a1
299 .globl icache_disable
301 move.l #0x01000000, %d0 /* Setup cache mask */
302 movec %d0, %CACR /* Disable cache */
303 clr.l %d0 /* Setup cache mask */
307 move.l #(CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-8), %a1
314 move.l #(CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-8), %a1
318 .globl icache_invalid
320 move.l #0x81000200, %d0 /* Setup cache mask */
321 movec %d0, %CACR /* Enable cache */
326 move.l #(CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-4), %a1
331 /* No dcache, just a dummy function */
332 .globl dcache_disable
334 move.l #(CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-4), %a1
341 move.l #(CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-4), %a1
345 /*------------------------------------------------------------------------------*/
347 .globl version_string
349 .ascii U_BOOT_VERSION
350 .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
351 .ascii CONFIG_IDENT_STRING, "\0"