2 * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
3 * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
5 * (C) Copyright 2004-2008 Freescale Semiconductor, Inc.
6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
8 * SPDX-License-Identifier: GPL-2.0+
11 #include <asm-offsets.h>
14 #include <asm/cache.h>
20 move.w #0x2700,%sr; /* disable intrs */ \
21 subl #60,%sp; /* space for 15 regs */ \
22 moveml %d0-%d7/%a0-%a6,%sp@;
25 moveml %sp@,%d0-%d7/%a0-%a6; \
26 addl #60,%sp; /* space for 15 regs */ \
29 #if !defined(CONFIG_MONITOR_IS_IN_RAM)
34 * Vector table. This is used for initial platform startup.
35 * These vectors are to catch any un-intended traps.
38 INITSP: .long 0x00000000 /* Initial SP */
39 INITPC: .long _START /* Initial PC */
42 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
43 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
47 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
50 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
54 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
55 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
59 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
60 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
63 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
64 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
65 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
66 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
67 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
68 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
69 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
70 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
73 .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
76 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
77 .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
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
86 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
87 .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 #endif /* !defined(CONFIG_MONITOR_IS_IN_RAM) */
99 move.w #0x2700,%sr /* Mask off Interrupt */
101 #if !defined(CONFIG_MONITOR_IS_IN_RAM)
102 /* Set vector base register at the beginning of the Flash */
103 move.l #CONFIG_SYS_FLASH_BASE, %d0
107 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
110 /* invalidate and disable cache */
111 move.l #CF_CACR_CINVA, %d0 /* Invalidate cache cmd */
112 movec %d0, %CACR /* Invalidate cache */
117 #ifdef CONFIG_MCF5301x
118 move.l #(0xFC0a0010), %a0
125 /* initialize general use internal ram */
127 move.l #(ICACHE_STATUS), %a1 /* icache */
128 move.l #(DCACHE_STATUS), %a2 /* icache */
132 /* put relocation table address to a5 */
133 move.l #__got_start, %a5
135 /* setup stack initially on top of internal static ram */
136 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE), %sp
139 * if configured, malloc_f arena will be reserved first,
140 * then (and always) gd struct space will be reserved
143 move.l #board_init_f_alloc_reserve, %a1
146 /* update stack and frame-pointers */
150 /* initialize reserved area */
152 move.l #board_init_f_init_reserve, %a1
155 /* run low-level CPU init code (from flash) */
156 move.l #cpu_init_f, %a1
159 /* run low-level board init code (from flash) */
161 move.l #board_init_f, %a1
164 /* board_init_f() does not return */
166 /******************************************************************************/
169 * void relocate_code (addr_sp, gd, addr_moni)
171 * This "function" does not return, instead it continues in RAM
172 * after relocating the monitor code.
176 * r5 = length in bytes
182 move.l 8(%a6), %sp /* set new stack pointer */
184 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
185 move.l 16(%a6), %a0 /* Save copy of Destination Address */
187 move.l #CONFIG_SYS_MONITOR_BASE, %a1
188 move.l #__init_end, %a2
191 /* copy the code to RAM */
193 move.l (%a1)+, (%a3)+
198 * We are done. Do not return, instead branch to second part of board
199 * initialization, now running from RAM.
202 add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
209 * Now clear BSS segment
212 add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
214 add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
221 * fix got table in RAM
224 add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
225 move.l %a1,%a5 /* fix got pointer register a5 */
228 add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
238 /* calculate relative jump to board_init_r in ram */
240 add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
242 /* set parameters for board_init_r */
243 move.l %a0,-(%sp) /* dest_addr */
244 move.l %d0,-(%sp) /* gd */
247 /******************************************************************************/
270 /******************************************************************************/
272 .globl version_string
274 .ascii U_BOOT_VERSION_STRING, "\0"