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,
25 #include <timestamp.h>
28 #ifndef CONFIG_IDENT_STRING
29 #define CONFIG_IDENT_STRING ""
32 /* last three long word reserved for cache status */
33 #define ICACHE_STATUS (CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END- 4)
34 #define DCACHE_STATUS (CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END- 8)
35 #define CACR_STATUS (CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-12)
41 move.w #0x2700,%sr; /* disable intrs */ \
42 subl #60,%sp; /* space for 15 regs */ \
43 moveml %d0-%d7/%a0-%a6,%sp@;
46 moveml %sp@,%d0-%d7/%a0-%a6; \
47 addl #60,%sp; /* space for 15 regs */ \
52 * Vector table. This is used for initial platform startup.
53 * These vectors are to catch any un-intended traps.
57 INITSP: .long 0x00000000 /* Initial SP */
58 INITPC: .long _START /* Initial PC */
59 vector02: .long _FAULT /* Access Error */
60 vector03: .long _FAULT /* Address Error */
61 vector04: .long _FAULT /* Illegal Instruction */
62 vector05: .long _FAULT /* Reserved */
63 vector06: .long _FAULT /* Reserved */
64 vector07: .long _FAULT /* Reserved */
65 vector08: .long _FAULT /* Privilege Violation */
66 vector09: .long _FAULT /* Trace */
67 vector0A: .long _FAULT /* Unimplemented A-Line */
68 vector0B: .long _FAULT /* Unimplemented F-Line */
69 vector0C: .long _FAULT /* Debug Interrupt */
70 vector0D: .long _FAULT /* Reserved */
71 vector0E: .long _FAULT /* Format Error */
72 vector0F: .long _FAULT /* Unitialized Int. */
76 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
78 vector18: .long _FAULT /* Spurious Interrupt */
79 vector19: .long _FAULT /* Autovector Level 1 */
80 vector1A: .long _FAULT /* Autovector Level 2 */
81 vector1B: .long _FAULT /* Autovector Level 3 */
82 vector1C: .long _FAULT /* Autovector Level 4 */
83 vector1D: .long _FAULT /* Autovector Level 5 */
84 vector1E: .long _FAULT /* Autovector Level 6 */
85 vector1F: .long _FAULT /* Autovector Level 7 */
89 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
90 .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
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 .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
115 .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 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
133 move.w #0x2700,%sr /* Mask off Interrupt */
135 /* Set vector base register at the beginning of the Flash */
136 move.l #CONFIG_SYS_FLASH_BASE, %d0
139 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
142 move.l #(CONFIG_SYS_INIT_RAM1_ADDR + CONFIG_SYS_INIT_RAM1_CTRL), %d0
145 move.l #CONFIG_SYS_MBAR, %d0 /* set MBAR address */
148 /* invalidate and disable cache */
149 move.l #0x01040100, %d0 /* Invalidate cache cmd */
150 movec %d0, %CACR /* Invalidate cache */
157 /* initialize general use internal ram */
159 move.l #(ICACHE_STATUS), %a1 /* icache */
160 move.l #(DCACHE_STATUS), %a2 /* icache */
161 move.l #(CACR_STATUS), %a3 /* CACR */
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 #(CONFIG_SYS_SDRAM_BASE + 0x1c000), %d0
286 movec %d0, %ACR2 /* Enable cache */
288 move.l #0x020C8100, %d0 /* Setup cache mask */
289 movec %d0, %CACR /* Enable cache */
292 move.l #(ICACHE_STATUS), %a1
297 .globl icache_disable
299 move.l #0x000C8100, %d0 /* Setup cache mask */
300 movec %d0, %CACR /* Disable cache */
301 clr.l %d0 /* Setup cache mask */
305 move.l #(ICACHE_STATUS), %a1
310 .globl icache_invalid
312 move.l #0x000C8100, %d0 /* Setup cache mask */
313 movec %d0, %CACR /* Enable cache */
318 move.l #(ICACHE_STATUS), %a1
326 move.l #(CONFIG_SYS_SDRAM_BASE + 0xc000), %d0
327 movec %d0, %ACR0 /* Enable cache */
329 move.l #0xA30C8100, %d0 /* Invalidate cache cmd */
330 movec %d0, %CACR /* Invalidate cache */
332 move.l #(DCACHE_STATUS), %a1
337 .globl dcache_disable
339 move.l #0xA30C8100, %d0 /* Setup cache mask */
340 movec %d0, %CACR /* Disable cache */
341 clr.l %d0 /* Setup cache mask */
345 move.l #(DCACHE_STATUS), %a1
352 move.l #(DCACHE_STATUS), %a1
356 /*------------------------------------------------------------------------------*/
358 .globl version_string
360 .ascii U_BOOT_VERSION
361 .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
362 .ascii CONFIG_IDENT_STRING, "\0"