1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
4 * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
7 #include <asm-offsets.h>
10 #include <asm/cache.h>
17 move.w #0x2700,%sr; /* disable intrs */ \
18 subl #60,%sp; /* space for 15 regs */ \
19 moveml %d0-%d7/%a0-%a6,%sp@; \
22 moveml %sp@,%d0-%d7/%a0-%a6; \
23 addl #60,%sp; /* space for 15 regs */ \
26 /* If we come from a pre-loader we don't need an initial exception
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 .long 0x00000000 /* Flash offset is 0 until we setup CS0 */
39 #if defined(CONFIG_M5282) && (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
40 .long _start - CONFIG_SYS_TEXT_BASE
45 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
46 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
47 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
48 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
49 .long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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
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, _FAULT, _FAULT
58 .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
61 .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
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
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
85 #if defined(CONFIG_SYS_INT_FLASH_BASE) && \
86 (defined(CONFIG_M5282) || defined(CONFIG_M5281))
87 #if (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
88 .long 0x55AA55AA,0xAA55AA55 /* CFM Backdoorkey */
89 .long 0xFFFFFFFF /* all sectors protected */
90 .long 0x00000000 /* supervisor/User restriction */
91 .long 0x00000000 /* programm/data space restriction */
92 .long 0x00000000 /* Flash security */
102 #if defined(CONFIG_M5208)
103 /* Initialize RAMBAR: locate SRAM and validate it */
104 move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
108 #if defined(CONFIG_M5272) || defined(CONFIG_M5249) || defined(CONFIG_M5253)
109 /* set MBAR address + valid flag */
110 move.l #(CONFIG_SYS_MBAR + 1), %d0
113 /*** The 5249 has MBAR2 as well ***/
114 #ifdef CONFIG_SYS_MBAR2
115 /* Get MBAR2 address */
116 move.l #(CONFIG_SYS_MBAR2 + 1), %d0
120 move.l #(CONFIG_SYS_INIT_RAM_ADDR + 1), %d0
122 #endif /* CONFIG_M5272 || CONFIG_M5249 || CONFIG_M5253 */
124 #if defined(CONFIG_M5282) || defined(CONFIG_M5271)
125 /* set MBAR address + valid flag */
126 move.l #(CONFIG_SYS_MBAR + 1), %d0
127 move.l %d0, 0x40000000
129 /* Initialize RAMBAR1: locate SRAM and validate it */
130 move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
133 #if defined(CONFIG_M5282)
134 #if (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
136 * Setup code in SRAM to initialize FLASHBAR,
137 * if start from internal Flash
139 move.l #(_flashbar_setup-CONFIG_SYS_INT_FLASH_BASE), %a0
140 move.l #(_flashbar_setup_end-CONFIG_SYS_INT_FLASH_BASE), %a1
141 move.l #(CONFIG_SYS_INIT_RAM_ADDR), %a2
143 move.l (%a0)+, (%a2)+
146 jmp CONFIG_SYS_INIT_RAM_ADDR
149 /* Initialize FLASHBAR: locate internal Flash and validate it */
150 move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
152 jmp _after_flashbar_copy.L /* Force jump to absolute address */
155 _after_flashbar_copy:
157 /* Setup code to initialize FLASHBAR, if start from external Memory */
158 move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
160 #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 /* set MBAR address + valid flag */
179 move.l #(CONFIG_SYS_MBAR + 1), %d0
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
222 /* run low-level board init code (from flash) */
224 move.l #board_init_f, %a1
227 /* board_init_f() does not return */
229 /******************************************************************************/
232 * void relocate_code(addr_sp, gd, addr_moni)
234 * This "function" does not return, instead it continues in RAM
235 * after relocating the monitor code.
239 * r5 = length in bytes
245 move.l 8(%a6), %sp /* set new stack pointer */
247 move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
248 move.l 16(%a6), %a0 /* Save copy of Destination Address */
250 move.l #CONFIG_SYS_MONITOR_BASE, %a1
251 move.l #__init_end, %a2
253 /* copy the code to RAM */
255 move.l (%a1)+, (%a3)+
260 * We are done. Do not return, instead branch to second part of board
261 * initialization, now running from RAM.
264 add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
271 * Now clear BSS segment
274 add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
276 add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
283 * fix got table in RAM
286 add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
287 move.l %a1,%a5 /* fix got pointer register a5 */
290 add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
300 /* calculate relative jump to board_init_r in ram */
302 add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
304 /* set parameters for board_init_r */
305 move.l %a0,-(%sp) /* dest_addr */
306 move.l %d0,-(%sp) /* gd */
307 #if defined(DEBUG) && (CONFIG_SYS_TEXT_BASE != CONFIG_SYS_INT_FLASH_BASE) && \
308 defined(CONFIG_SYS_HALT_BEFOR_RAM_JUMP)
313 /******************************************************************************/
336 /******************************************************************************/
338 .globl version_string
340 .ascii U_BOOT_VERSION_STRING, "\0"