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 ""
35 move.w #0x2700,%sr; /* disable intrs */ \
36 subl #60,%sp; /* space for 15 regs */ \
37 moveml %d0-%d7/%a0-%a6,%sp@;
40 moveml %sp@,%d0-%d7/%a0-%a6; \
41 addl #60,%sp; /* space for 15 regs */ \
46 * Vector table. This is used for initial platform startup.
47 * These vectors are to catch any un-intended traps.
51 INITSP: .long 0x00000000 /* Initial SP */
52 INITPC: .long _START /* Initial PC */
53 vector02: .long _FAULT /* Access Error */
54 vector03: .long _FAULT /* Address Error */
55 vector04: .long _FAULT /* Illegal Instruction */
56 vector05: .long _FAULT /* Reserved */
57 vector06: .long _FAULT /* Reserved */
58 vector07: .long _FAULT /* Reserved */
59 vector08: .long _FAULT /* Privilege Violation */
60 vector09: .long _FAULT /* Trace */
61 vector0A: .long _FAULT /* Unimplemented A-Line */
62 vector0B: .long _FAULT /* Unimplemented F-Line */
63 vector0C: .long _FAULT /* Debug Interrupt */
64 vector0D: .long _FAULT /* Reserved */
65 vector0E: .long _FAULT /* Format Error */
66 vector0F: .long _FAULT /* Unitialized Int. */
70 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
72 vector18: .long _FAULT /* Spurious Interrupt */
73 vector19: .long _FAULT /* Autovector Level 1 */
74 vector1A: .long _FAULT /* Autovector Level 2 */
75 vector1B: .long _FAULT /* Autovector Level 3 */
76 vector1C: .long _FAULT /* Autovector Level 4 */
77 vector1D: .long _FAULT /* Autovector Level 5 */
78 vector1E: .long _FAULT /* Autovector Level 6 */
79 vector1F: .long _FAULT /* Autovector Level 7 */
83 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
84 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
88 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
89 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
92 .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
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
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
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
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
119 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
127 move.w #0x2700,%sr /* Mask off Interrupt */
129 /* Set vector base register at the beginning of the Flash */
130 move.l #CFG_FLASH_BASE, %d0
133 move.l #(CFG_INIT_RAM_ADDR + CFG_INIT_RAM_CTRL), %d0
136 /* invalidate and disable cache */
137 move.l #0x01000000, %d0 /* Invalidate cache cmd */
138 movec %d0, %CACR /* Invalidate cache */
143 /* initialize general use internal ram */
145 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-8), %a1
146 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-4), %a2
150 /* set stackpointer to end of internal ram to get some stackspace for the
152 move.l #(CFG_INIT_RAM_ADDR + CFG_INIT_SP_OFFSET), %sp
155 move.l #__got_start, %a5 /* put relocation table address to a5 */
157 bsr cpu_init_f /* run low-level CPU init code (from flash) */
158 bsr board_init_f /* run low-level board init code (from flash) */
160 /* board_init_f() does not return */
162 /*------------------------------------------------------------------------------*/
165 * void relocate_code (addr_sp, gd, addr_moni)
167 * This "function" does not return, instead it continues in RAM
168 * after relocating the monitor code.
172 * r5 = length in bytes
178 move.l 8(%a6), %sp /* set new stack pointer */
180 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
181 move.l 16(%a6), %a0 /* Save copy of Destination Address */
183 move.l #CFG_MONITOR_BASE, %a1
184 move.l #__init_end, %a2
187 /* copy the code to RAM */
189 move.l (%a1)+, (%a3)+
194 * We are done. Do not return, instead branch to second part of board
195 * initialization, now running from RAM.
198 add.l #(in_ram - CFG_MONITOR_BASE), %a1
205 * Now clear BSS segment
208 add.l #(_sbss - CFG_MONITOR_BASE),%a1
210 add.l #(_ebss - CFG_MONITOR_BASE),%d1
217 * fix got table in RAM
220 add.l #(__got_start - CFG_MONITOR_BASE),%a1
221 move.l %a1,%a5 /* * fix got pointer register a5 */
224 add.l #(__got_end - CFG_MONITOR_BASE),%a2
234 /* calculate relative jump to board_init_r in ram */
236 add.l #(board_init_r - CFG_MONITOR_BASE), %a1
238 /* set parameters for board_init_r */
239 move.l %a0,-(%sp) /* dest_addr */
240 move.l %d0,-(%sp) /* gd */
243 /*------------------------------------------------------------------------------*/
265 /*------------------------------------------------------------------------------*/
266 /* cache functions */
269 move.l #0x01000000, %d0 /* Invalidate cache cmd */
270 movec %d0, %CACR /* Invalidate cache */
271 move.l #(CFG_SDRAM_BASE + 0x1c000), %d0
272 movec %d0, %ACR0 /* Enable cache */
274 move.l #0x80000200, %d0 /* Setup cache mask */
275 movec %d0, %CACR /* Enable cache */
278 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-8), %a1
283 .globl icache_disable
285 move.l #0x01000000, %d0 /* Setup cache mask */
286 movec %d0, %CACR /* Disable cache */
287 clr.l %d0 /* Setup cache mask */
291 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-8), %a1
298 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-8), %a1
302 .globl icache_invalid
304 move.l #0x81000200, %d0 /* Setup cache mask */
305 movec %d0, %CACR /* Enable cache */
310 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-4), %a1
315 /* No dcache, just a dummy function */
316 .globl dcache_disable
318 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-4), %a1
325 move.l #(CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-4), %a1
329 /*------------------------------------------------------------------------------*/
331 .globl version_string
333 .ascii U_BOOT_VERSION
334 .ascii " (", __DATE__, " - ", __TIME__, ")"
335 .ascii CONFIG_IDENT_STRING, "\0"