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>
26 #include <timestamp.h>
28 #include <asm/cache.h>
30 #ifndef CONFIG_IDENT_STRING
31 #define CONFIG_IDENT_STRING ""
38 move.w #0x2700,%sr; /* disable intrs */ \
39 subl #60,%sp; /* space for 15 regs */ \
40 moveml %d0-%d7/%a0-%a6,%sp@;
43 moveml %sp@,%d0-%d7/%a0-%a6; \
44 addl #60,%sp; /* space for 15 regs */ \
49 * Vector table. This is used for initial platform startup.
50 * These vectors are to catch any un-intended traps.
54 INITSP: .long 0x00000000 /* Initial SP */
55 INITPC: .long _START /* Initial PC */
56 vector02: .long _FAULT /* Access Error */
57 vector03: .long _FAULT /* Address Error */
58 vector04: .long _FAULT /* Illegal Instruction */
59 vector05: .long _FAULT /* Reserved */
60 vector06: .long _FAULT /* Reserved */
61 vector07: .long _FAULT /* Reserved */
62 vector08: .long _FAULT /* Privilege Violation */
63 vector09: .long _FAULT /* Trace */
64 vector0A: .long _FAULT /* Unimplemented A-Line */
65 vector0B: .long _FAULT /* Unimplemented F-Line */
66 vector0C: .long _FAULT /* Debug Interrupt */
67 vector0D: .long _FAULT /* Reserved */
68 vector0E: .long _FAULT /* Format Error */
69 vector0F: .long _FAULT /* Unitialized Int. */
73 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
75 vector18: .long _FAULT /* Spurious Interrupt */
76 vector19: .long _FAULT /* Autovector Level 1 */
77 vector1A: .long _FAULT /* Autovector Level 2 */
78 vector1B: .long _FAULT /* Autovector Level 3 */
79 vector1C: .long _FAULT /* Autovector Level 4 */
80 vector1D: .long _FAULT /* Autovector Level 5 */
81 vector1E: .long _FAULT /* Autovector Level 6 */
82 vector1F: .long _FAULT /* Autovector Level 7 */
86 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
87 .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
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 .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
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 .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
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
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
130 move.w #0x2700,%sr /* Mask off Interrupt */
132 /* Set vector base register at the beginning of the Flash */
133 move.l #CONFIG_SYS_FLASH_BASE, %d0
136 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
139 move.l #(CONFIG_SYS_INIT_RAM1_ADDR + CONFIG_SYS_INIT_RAM1_CTRL), %d0
142 move.l #CONFIG_SYS_MBAR, %d0 /* set MBAR address */
145 /* invalidate and disable cache */
146 move.l #0x01040100, %d0 /* Invalidate cache cmd */
147 movec %d0, %CACR /* Invalidate cache */
154 /* initialize general use internal ram */
156 move.l #(ICACHE_STATUS), %a1 /* icache */
157 move.l #(DCACHE_STATUS), %a2 /* icache */
161 /* set stackpointer to end of internal ram to get some stackspace for the
163 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
166 move.l #__got_start, %a5 /* put relocation table address to a5 */
168 bsr cpu_init_f /* run low-level CPU init code (from flash) */
169 bsr board_init_f /* run low-level board init code (from flash) */
171 /* board_init_f() does not return */
173 /*------------------------------------------------------------------------------*/
176 * void relocate_code (addr_sp, gd, addr_moni)
178 * This "function" does not return, instead it continues in RAM
179 * after relocating the monitor code.
183 * r5 = length in bytes
189 move.l 8(%a6), %sp /* set new stack pointer */
191 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
192 move.l 16(%a6), %a0 /* Save copy of Destination Address */
194 move.l #CONFIG_SYS_MONITOR_BASE, %a1
195 move.l #__init_end, %a2
198 /* copy the code to RAM */
200 move.l (%a1)+, (%a3)+
205 * We are done. Do not return, instead branch to second part of board
206 * initialization, now running from RAM.
209 add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
216 * Now clear BSS segment
219 add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
221 add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
228 * fix got table in RAM
231 add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
232 move.l %a1,%a5 /* * fix got pointer register a5 */
235 add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
245 /* calculate relative jump to board_init_r in ram */
247 add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
249 /* set parameters for board_init_r */
250 move.l %a0,-(%sp) /* dest_addr */
251 move.l %d0,-(%sp) /* gd */
254 /*------------------------------------------------------------------------------*/
276 /*------------------------------------------------------------------------------*/
278 .globl version_string
280 .ascii U_BOOT_VERSION
281 .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
282 .ascii CONFIG_IDENT_STRING, "\0"