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,
27 #ifndef CONFIG_IDENT_STRING
28 #define CONFIG_IDENT_STRING ""
36 move.w #0x2700,%sr; /* disable intrs */ \
37 subl #60,%sp; /* space for 15 regs */ \
38 moveml %d0-%d7/%a0-%a6,%sp@;
41 moveml %sp@,%d0-%d7/%a0-%a6; \
42 addl #60,%sp; /* space for 15 regs */ \
48 * Vector table. This is used for initial platform startup.
49 * These vectors are to catch any un-intended traps.
53 INITSP: .long 0x00000000 /* Initial SP */
54 INITPC: .long _START /* Initial PC */
55 vector02: .long _FAULT /* Access Error */
56 vector03: .long _FAULT /* Address Error */
57 vector04: .long _FAULT /* Illegal Instruction */
58 vector05: .long _FAULT /* Reserved */
59 vector06: .long _FAULT /* Reserved */
60 vector07: .long _FAULT /* Reserved */
61 vector08: .long _FAULT /* Privilege Violation */
62 vector09: .long _FAULT /* Trace */
63 vector0A: .long _FAULT /* Unimplemented A-Line */
64 vector0B: .long _FAULT /* Unimplemented F-Line */
65 vector0C: .long _FAULT /* Debug Interrupt */
66 vector0D: .long _FAULT /* Reserved */
67 vector0E: .long _FAULT /* Format Error */
68 vector0F: .long _FAULT /* Unitialized Int. */
72 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
74 vector18: .long _FAULT /* Spurious Interrupt */
75 vector19: .long _FAULT /* Autovector Level 1 */
76 vector1A: .long _FAULT /* Autovector Level 2 */
77 vector1B: .long _FAULT /* Autovector Level 3 */
78 vector1C: .long _FAULT /* Autovector Level 4 */
79 vector1D: .long _FAULT /* Autovector Level 5 */
80 vector1E: .long _FAULT /* Autovector Level 6 */
81 vector1F: .long _FAULT /* Autovector Level 7 */
85 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
86 .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
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 .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
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 .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
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
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
129 move.w #0x2700,%sr /* Mask off Interrupt */
131 /* Set vector base register at the beginning of the Flash */
132 move.l #CFG_FLASH_BASE, %d0
135 move.l #(CFG_INIT_RAM_ADDR + CFG_INIT_RAM_CTRL), %d0
138 /* invalidate and disable cache */
139 move.l #0x01000000, %d0 /* Invalidate cache cmd */
140 movec %d0, %CACR /* Invalidate cache */
145 /* initialize general use internal ram */
147 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-8), %a1
148 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-4), %a2
152 /* set stackpointer to end of internal ram to get some stackspace for the first c-code */
153 move.l #(CFG_INIT_RAM_ADDR + CFG_INIT_SP_OFFSET), %sp
156 move.l #__got_start, %a5 /* put relocation table address to a5 */
158 bsr cpu_init_f /* run low-level CPU init code (from flash) */
159 bsr board_init_f /* run low-level board init code (from flash) */
161 /* board_init_f() does not return */
163 /*------------------------------------------------------------------------------*/
166 * void relocate_code (addr_sp, gd, addr_moni)
168 * This "function" does not return, instead it continues in RAM
169 * after relocating the monitor code.
173 * r5 = length in bytes
179 move.l 8(%a6), %sp /* set new stack pointer */
181 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
182 move.l 16(%a6), %a0 /* Save copy of Destination Address */
184 move.l #CFG_MONITOR_BASE, %a1
185 move.l #__init_end, %a2
188 /* copy the code to RAM */
190 move.l (%a1)+, (%a3)+
195 * We are done. Do not return, instead branch to second part of board
196 * initialization, now running from RAM.
199 add.l #(in_ram - CFG_MONITOR_BASE), %a1
206 * Now clear BSS segment
209 add.l #(_sbss - CFG_MONITOR_BASE),%a1
211 add.l #(_ebss - CFG_MONITOR_BASE),%d1
218 * fix got table in RAM
221 add.l #(__got_start - CFG_MONITOR_BASE),%a1
222 move.l %a1,%a5 /* * fix got pointer register a5 */
225 add.l #(__got_end - CFG_MONITOR_BASE),%a2
235 /* calculate relative jump to board_init_r in ram */
237 add.l #(board_init_r - CFG_MONITOR_BASE), %a1
239 /* set parameters for board_init_r */
240 move.l %a0,-(%sp) /* dest_addr */
241 move.l %d0,-(%sp) /* gd */
244 /*------------------------------------------------------------------------------*/
266 /*------------------------------------------------------------------------------*/
267 /* cache functions */
270 move.l #0x01000000, %d0 /* Invalidate cache cmd */
271 movec %d0, %CACR /* Invalidate cache */
272 move.l #(CFG_SDRAM_BASE + 0xc000), %d0 /* Setup cache mask */
273 movec %d0, %ACR0 /* Enable cache */
274 move.l #(CFG_CS0_BASE + 0xc000), %d0 /* Setup cache mask */
275 movec %d0, %ACR1 /* Enable cache */
277 /*move.l #0x81000100, %d0*/ /* Setup cache mask */
278 move.l #0x81000100, %d0 /* Setup cache mask */
279 movec %d0, %CACR /* Enable cache */
281 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-8), %a1
286 .globl icache_disable
288 move.l #0x00000100, %d0 /* Setup cache mask */
289 movec %d0, %CACR /* Enable cache */
290 clr.l %d0 /* Setup cache mask */
291 movec %d0, %ACR0 /* Enable cache */
292 movec %d0, %ACR1 /* Enable cache */
294 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-8), %a1
301 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-8), %a1
305 .globl icache_invalid
307 move.l #0x00000100, %d0 /* Setup cache mask */
308 movec %d0, %CACR /* Enable cache */
313 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-4), %a1
318 /* No dcache, just a dummy function */
319 .globl dcache_disable
321 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-4), %a1
328 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-4), %a1
332 /*------------------------------------------------------------------------------*/
334 .globl version_string
336 .ascii U_BOOT_VERSION
337 .ascii " (", __DATE__, " - ", __TIME__, ")"
338 .ascii CONFIG_IDENT_STRING, "\0"