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 ""
22 move.w #0x2700,%sr; /* disable intrs */ \
23 subl #60,%sp; /* space for 15 regs */ \
24 moveml %d0-%d7/%a0-%a6,%sp@; \
27 moveml %sp@,%d0-%d7/%a0-%a6; \
28 addl #60,%sp; /* space for 15 regs */ \
31 /* If we come from a pre-loader we don't need an initial exception
34 #if !defined(CONFIG_MONITOR_IS_IN_RAM)
38 * Vector table. This is used for initial platform startup.
39 * These vectors are to catch any un-intended traps.
43 .long 0x00000000 /* Flash offset is 0 until we setup CS0 */
44 #if defined(CONFIG_M5282) && (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
45 .long _start - CONFIG_SYS_TEXT_BASE
50 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
51 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
52 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
53 .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
56 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
57 .long _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
61 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
62 .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
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
71 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
72 .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
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
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
91 #if defined(CONFIG_SYS_INT_FLASH_BASE) && \
92 (defined(CONFIG_M5282) || defined(CONFIG_M5281))
93 #if (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
94 .long 0x55AA55AA,0xAA55AA55 /* CFM Backdoorkey */
95 .long 0xFFFFFFFF /* all sectors protected */
96 .long 0x00000000 /* supervisor/User restriction */
97 .long 0x00000000 /* programm/data space restriction */
98 .long 0x00000000 /* Flash security */
107 #if defined(CONFIG_M5208)
108 /* Initialize RAMBAR: locate SRAM and validate it */
109 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
113 #if defined(CONFIG_M5272) || defined(CONFIG_M5249) || defined(CONFIG_M5253)
114 move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set MBAR address + valid flag */
117 /*** The 5249 has MBAR2 as well ***/
118 #ifdef CONFIG_SYS_MBAR2
119 move.l #(CONFIG_SYS_MBAR2 + 1), %d0 /* Get MBAR2 address */
120 movec %d0, #0xc0e /* Set MBAR2 */
123 move.l #(CONFIG_SYS_INIT_RAM_ADDR + 1), %d0
125 #endif /* CONFIG_M5272 || CONFIG_M5249 || CONFIG_M5253 */
127 #if defined(CONFIG_M5282) || defined(CONFIG_M5271)
128 /* Initialize IPSBAR */
129 move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set IPSBAR address + valid flag */
130 move.l %d0, 0x40000000
132 /* Initialize RAMBAR1: locate SRAM and validate it */
133 move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
136 #if defined(CONFIG_M5282)
137 #if (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
138 /* Setup code in SRAM to initialize FLASHBAR, if start from internal Flash */
140 move.l #(_flashbar_setup-CONFIG_SYS_INT_FLASH_BASE), %a0
141 move.l #(_flashbar_setup_end-CONFIG_SYS_INT_FLASH_BASE), %a1
142 move.l #(CONFIG_SYS_INIT_RAM_ADDR), %a2
144 move.l (%a0)+, (%a2)+
147 jmp CONFIG_SYS_INIT_RAM_ADDR
150 /* Initialize FLASHBAR: locate internal Flash and validate it */
151 move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
153 jmp _after_flashbar_copy.L /* Force jump to absolute address */
156 _after_flashbar_copy:
158 /* Setup code to initialize FLASHBAR, if start from external Memory */
159 move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
161 #endif /* (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE) */
165 /* if we come from a pre-loader we have no exception table and
166 * therefore no VBR to set
168 #if !defined(CONFIG_MONITOR_IS_IN_RAM)
169 #if defined(CONFIG_M5282) && (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
170 move.l #CONFIG_SYS_INT_FLASH_BASE, %d0
172 move.l #CONFIG_SYS_FLASH_BASE, %d0
178 /* Initialize IPSBAR */
179 move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set IPSBAR address + valid flag */
180 move.l %d0, 0x40000000
181 /* movec %d0, %MBAR */
183 /* Initialize RAMBAR: locate SRAM and validate it */
184 move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
188 /* initialize general use internal ram */
190 move.l #(ICACHE_STATUS), %a1 /* icache */
191 move.l #(DCACHE_STATUS), %a2 /* icache */
195 /* put relocation table address to a5 */
196 move.l #__got_start, %a5
198 /* setup stack initially on top of internal static ram */
199 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE), %sp
202 * if configured, malloc_f arena will be reserved first,
203 * then (and always) gd struct space will be reserved
206 move.l #board_init_f_alloc_reserve, %a1
209 /* update stack and frame-pointers */
213 /* initialize reserved area */
215 move.l #board_init_f_init_reserve, %a1
218 /* run low-level CPU init code (from flash) */
219 move.l #cpu_init_f, %a1
221 /* run low-level board init code (from flash) */
223 move.l #board_init_f, %a1
226 /* board_init_f() does not return */
228 /*------------------------------------------------------------------------------*/
231 * void relocate_code (addr_sp, gd, addr_moni)
233 * This "function" does not return, instead it continues in RAM
234 * after relocating the monitor code.
238 * r5 = length in bytes
244 move.l 8(%a6), %sp /* set new stack pointer */
246 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
247 move.l 16(%a6), %a0 /* Save copy of Destination Address */
249 move.l #CONFIG_SYS_MONITOR_BASE, %a1
250 move.l #__init_end, %a2
252 /* copy the code to RAM */
254 move.l (%a1)+, (%a3)+
259 * We are done. Do not return, instead branch to second part of board
260 * initialization, now running from RAM.
263 add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
270 * Now clear BSS segment
273 add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
275 add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
282 * fix got table in RAM
285 add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
286 move.l %a1,%a5 /* * fix got pointer register a5 */
289 add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
299 /* calculate relative jump to board_init_r in ram */
301 add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
303 /* set parameters for board_init_r */
304 move.l %a0,-(%sp) /* dest_addr */
305 move.l %d0,-(%sp) /* gd */
306 #if defined(DEBUG) && (CONFIG_SYS_TEXT_BASE != CONFIG_SYS_INT_FLASH_BASE) && \
307 defined(CONFIG_SYS_HALT_BEFOR_RAM_JUMP)
312 /*------------------------------------------------------------------------------*/
334 /*------------------------------------------------------------------------------*/
336 .globl version_string
338 .ascii U_BOOT_VERSION_STRING, "\0"