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 /* invalidate and disable cache */
123 move.l #CF_CACR_CINV, %d0 /* Invalidate cache cmd */
124 movec %d0, %CACR /* Invalidate cache */
130 /* initialize general use internal ram */
132 move.l #(ICACHE_STATUS), %a1 /* icache */
133 move.l #(DCACHE_STATUS), %a2 /* icache */
137 /* set stackpointer to end of internal ram to get some stackspace for the
139 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
142 move.l #__got_start, %a5 /* put relocation table address to a5 */
144 bsr cpu_init_f /* run low-level CPU init code (from flash) */
145 bsr board_init_f /* run low-level board init code (from flash) */
147 /* board_init_f() does not return */
149 /*------------------------------------------------------------------------------*/
152 * void relocate_code (addr_sp, gd, addr_moni)
154 * This "function" does not return, instead it continues in RAM
155 * after relocating the monitor code.
159 * r5 = length in bytes
165 move.l 8(%a6), %sp /* set new stack pointer */
167 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
168 move.l 16(%a6), %a0 /* Save copy of Destination Address */
170 move.l #CONFIG_SYS_MONITOR_BASE, %a1
171 move.l #__init_end, %a2
174 /* copy the code to RAM */
176 move.l (%a1)+, (%a3)+
181 * We are done. Do not return, instead branch to second part of board
182 * initialization, now running from RAM.
185 add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
192 * Now clear BSS segment
195 add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
197 add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
204 * fix got table in RAM
207 add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
208 move.l %a1,%a5 /* * fix got pointer register a5 */
211 add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
221 /* calculate relative jump to board_init_r in ram */
223 add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
225 /* set parameters for board_init_r */
226 move.l %a0,-(%sp) /* dest_addr */
227 move.l %d0,-(%sp) /* gd */
230 /*------------------------------------------------------------------------------*/
252 /*------------------------------------------------------------------------------*/
254 .globl version_string
256 .ascii U_BOOT_VERSION_STRING, "\0"