2 * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
3 * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
5 * SPDX-License-Identifier: GPL-2.0+
8 #include <asm-offsets.h>
11 #include <asm/cache.h>
13 #ifndef CONFIG_IDENT_STRING
14 #define CONFIG_IDENT_STRING ""
21 move.w #0x2700,%sr; /* disable intrs */ \
22 subl #60,%sp; /* space for 15 regs */ \
23 moveml %d0-%d7/%a0-%a6,%sp@;
26 moveml %sp@,%d0-%d7/%a0-%a6; \
27 addl #60,%sp; /* space for 15 regs */ \
32 * Vector table. This is used for initial platform startup.
33 * These vectors are to catch any un-intended traps.
37 INITSP: .long 0x00000000 /* Initial SP */
38 INITPC: .long _START /* Initial PC */
39 vector02: .long _FAULT /* Access Error */
40 vector03: .long _FAULT /* Address Error */
41 vector04: .long _FAULT /* Illegal Instruction */
42 vector05: .long _FAULT /* Reserved */
43 vector06: .long _FAULT /* Reserved */
44 vector07: .long _FAULT /* Reserved */
45 vector08: .long _FAULT /* Privilege Violation */
46 vector09: .long _FAULT /* Trace */
47 vector0A: .long _FAULT /* Unimplemented A-Line */
48 vector0B: .long _FAULT /* Unimplemented F-Line */
49 vector0C: .long _FAULT /* Debug Interrupt */
50 vector0D: .long _FAULT /* Reserved */
51 vector0E: .long _FAULT /* Format Error */
52 vector0F: .long _FAULT /* Unitialized Int. */
56 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
58 vector18: .long _FAULT /* Spurious Interrupt */
59 vector19: .long _FAULT /* Autovector Level 1 */
60 vector1A: .long _FAULT /* Autovector Level 2 */
61 vector1B: .long _FAULT /* Autovector Level 3 */
62 vector1C: .long _FAULT /* Autovector Level 4 */
63 vector1D: .long _FAULT /* Autovector Level 5 */
64 vector1E: .long _FAULT /* Autovector Level 6 */
65 vector1F: .long _FAULT /* Autovector Level 7 */
69 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
70 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
74 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
75 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
78 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
79 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
80 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
81 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
82 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
83 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
84 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
85 .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
90 .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
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
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
113 move.w #0x2700,%sr /* Mask off Interrupt */
115 /* Set vector base register at the beginning of the Flash */
116 move.l #CONFIG_SYS_FLASH_BASE, %d0
119 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
122 move.l #(CONFIG_SYS_INIT_RAM1_ADDR + CONFIG_SYS_INIT_RAM1_CTRL), %d0
125 move.l #CONFIG_SYS_MBAR, %d0 /* set MBAR address */
128 /* invalidate and disable cache */
129 move.l #0x01040100, %d0 /* Invalidate cache cmd */
130 movec %d0, %CACR /* Invalidate cache */
137 /* initialize general use internal ram */
139 move.l #(ICACHE_STATUS), %a1 /* icache */
140 move.l #(DCACHE_STATUS), %a2 /* icache */
144 /* put relocation table address to a5 */
145 move.l #__got_start, %a5
147 /* setup stack initially on top of internal static ram */
148 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE), %sp
151 * if configured, malloc_f arena will be reserved first,
152 * then (and always) gd struct space will be reserved
155 bsr board_init_f_alloc_reserve
157 /* update stack and frame-pointers */
161 /* initialize reserved area */
163 bsr board_init_f_init_reserve
165 jbsr cpu_init_f /* run low-level CPU init code (from flash) */
167 jbsr board_init_f /* run low-level board init code (from flash) */
169 /* board_init_f() does not return */
171 /*------------------------------------------------------------------------------*/
174 * void relocate_code (addr_sp, gd, addr_moni)
176 * This "function" does not return, instead it continues in RAM
177 * after relocating the monitor code.
181 * r5 = length in bytes
187 move.l 8(%a6), %sp /* set new stack pointer */
189 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
190 move.l 16(%a6), %a0 /* Save copy of Destination Address */
192 move.l #CONFIG_SYS_MONITOR_BASE, %a1
193 move.l #__init_end, %a2
196 /* copy the code to RAM */
198 move.l (%a1)+, (%a3)+
203 * We are done. Do not return, instead branch to second part of board
204 * initialization, now running from RAM.
207 add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
214 * Now clear BSS segment
217 add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
219 add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
226 * fix got table in RAM
229 add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
230 move.l %a1,%a5 /* * fix got pointer register a5 */
233 add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
243 /* calculate relative jump to board_init_r in ram */
245 add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
247 /* set parameters for board_init_r */
248 move.l %a0,-(%sp) /* dest_addr */
249 move.l %d0,-(%sp) /* gd */
252 /*------------------------------------------------------------------------------*/
274 /*------------------------------------------------------------------------------*/
276 .globl version_string
278 .ascii U_BOOT_VERSION_STRING, "\0"