Blame - arch/m68k/cpu/mcf52x2/start.S - filogic/uboot

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wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	1	/*
				2	* Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
				3	* Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
				4	*
Wolfgang Denk	d79de1d	2013-07-08 09:37:19 +0200	[diff] [blame]	5	* SPDX-License-Identifier: GPL-2.0+
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	6	*/
				7
Wolfgang Denk	0191e47	2010-10-26 14:34:52 +0200	[diff] [blame]	8	#include <asm-offsets.h>
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	9	#include <config.h>
				10	#include "version.h"
TsiChung Liew	0ee47d4	2010-03-11 22:12:53 -0600	[diff] [blame]	11	#include <asm/cache.h>
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	12
				13	#ifndef CONFIG_IDENT_STRING
				14	#define CONFIG_IDENT_STRING ""
				15	#endif
				16
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	17	#define _START _start
				18	#define _FAULT _fault
				19
				20
				21	#define SAVE_ALL \
				22	move.w #0x2700,%sr; /* disable intrs */ \
				23	subl #60,%sp; /* space for 15 regs */ \
				24	moveml %d0-%d7/%a0-%a6,%sp@; \
				25
				26	#define RESTORE_ALL \
				27	moveml %sp@,%d0-%d7/%a0-%a6; \
				28	addl #60,%sp; /* space for 15 regs */ \
				29	rte
				30
				31	/* If we come from a pre-loader we don't need an initial exception
				32	* table.
				33	*/
				34	#if !defined(CONFIG_MONITOR_IS_IN_RAM)
				35
				36	.text
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	37
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	38	/*
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	39	* Vector table. This is used for initial platform startup.
				40	* These vectors are to catch any un-intended traps.
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	41	*/
				42	_vectors:
Wolfgang Denk	b4b1c46	2006-06-10 19:27:47 +0200	[diff] [blame]	43	.long 0x00000000 /* Flash offset is 0 until we setup CS0 */
Wolfgang Denk	0708bc6	2010-10-07 21:51:12 +0200	[diff] [blame]	44	#if defined(CONFIG_M5282) && (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
				45	.long _start - CONFIG_SYS_TEXT_BASE
Zachary P. Landau	0bba862	2006-01-26 17:35:56 -0500	[diff] [blame]	46	#else
Wolfgang Denk	b4b1c46	2006-06-10 19:27:47 +0200	[diff] [blame]	47	.long _START
Zachary P. Landau	0bba862	2006-01-26 17:35:56 -0500	[diff] [blame]	48	#endif
Wolfgang Denk	b4b1c46	2006-06-10 19:27:47 +0200	[diff] [blame]	49
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	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
				58
				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
				67
				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
				76
				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
				85
				86	#endif
				87
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	88	.text
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	89
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	90	#if defined(CONFIG_SYS_INT_FLASH_BASE) && \
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	91	(defined(CONFIG_M5282) \|\| defined(CONFIG_M5281))
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	92	#if (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
				93	.long 0x55AA55AA,0xAA55AA55 /* CFM Backdoorkey */
				94	.long 0xFFFFFFFF /* all sectors protected */
				95	.long 0x00000000 /* supervisor/User restriction */
				96	.long 0x00000000 /* programm/data space restriction */
				97	.long 0x00000000 /* Flash security */
				98	#endif
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	99	#endif
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	100
				101	.globl _start
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	102	_start:
				103	nop
				104	nop
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	105	move.w #0x2700,%sr
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	106
TsiChung Liew	b354aef	2009-06-12 11:29:00 +0000	[diff] [blame]	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
				110	movec %d0, %RAMBAR1
				111	#endif
				112
TsiChungLiew	3467469	2007-08-16 13:20:50 -0500	[diff] [blame]	113	#if defined(CONFIG_M5272) \|\| defined(CONFIG_M5249) \|\| defined(CONFIG_M5253)
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	114	/* set MBAR address + valid flag */
				115	move.l #(CONFIG_SYS_MBAR + 1), %d0
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	116	move.c %d0, %MBAR
				117
stroese	53395a2	2004-12-16 18:09:49 +0000	[diff] [blame]	118	/* The 5249 has MBAR2 as well */
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	119	#ifdef CONFIG_SYS_MBAR2
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	120	/* Get MBAR2 address */
				121	move.l #(CONFIG_SYS_MBAR2 + 1), %d0
				122	/* Set MBAR2 */
				123	movec %d0, #0xc0e
stroese	53395a2	2004-12-16 18:09:49 +0000	[diff] [blame]	124	#endif
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	125	move.l #(CONFIG_SYS_INIT_RAM_ADDR + 1), %d0
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	126	movec %d0, %RAMBAR0
TsiChungLiew	3467469	2007-08-16 13:20:50 -0500	[diff] [blame]	127	#endif /* CONFIG_M5272 \|\| CONFIG_M5249 \|\| CONFIG_M5253 */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	128
Wolfgang Denk	b4b1c46	2006-06-10 19:27:47 +0200	[diff] [blame]	129	#if defined(CONFIG_M5282) \|\| defined(CONFIG_M5271)
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	130	/* set MBAR address + valid flag */
				131	move.l #(CONFIG_SYS_MBAR + 1), %d0
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	132	move.l %d0, 0x40000000
				133
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	134	/* Initialize RAMBAR1: locate SRAM and validate it */
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	135	move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	136	movec %d0, %RAMBAR1
				137
Bartlomiej Sieka	8ff81c6	2006-12-20 00:27:32 +0100	[diff] [blame]	138	#if defined(CONFIG_M5282)
Wolfgang Denk	0708bc6	2010-10-07 21:51:12 +0200	[diff] [blame]	139	#if (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	140	/*
				141	* Setup code in SRAM to initialize FLASHBAR,
				142	* if start from internal Flash
				143	*/
				144	move.l #(_flashbar_setup-CONFIG_SYS_INT_FLASH_BASE), %a0
				145	move.l #(_flashbar_setup_end-CONFIG_SYS_INT_FLASH_BASE), %a1
				146	move.l #(CONFIG_SYS_INIT_RAM_ADDR), %a2
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	147	_copy_flash:
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	148	move.l (%a0)+, (%a2)+
				149	cmp.l %a0, %a1
				150	bgt.s _copy_flash
				151	jmp CONFIG_SYS_INIT_RAM_ADDR
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	152
				153	_flashbar_setup:
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	154	/* Initialize FLASHBAR: locate internal Flash and validate it */
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	155	move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
TsiChung Liew	7e5ae27	2008-03-13 14:26:32 -0500	[diff] [blame]	156	movec %d0, %FLASHBAR
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	157	jmp _after_flashbar_copy.L /* Force jump to absolute address */
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	158	_flashbar_setup_end:
				159	nop
				160	_after_flashbar_copy:
				161	#else
				162	/* Setup code to initialize FLASHBAR, if start from external Memory */
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	163	move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
TsiChung Liew	fcd4aac	2008-08-11 15:54:25 +0000	[diff] [blame]	164	movec %d0, %FLASHBAR
Wolfgang Denk	0708bc6	2010-10-07 21:51:12 +0200	[diff] [blame]	165	#endif /* (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE) */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	166
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	167	#endif
Wolfgang Denk	5b1657d	2006-09-04 01:03:57 +0200	[diff] [blame]	168	#endif
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	169	/*
				170	* if we come from a pre-loader we have no exception table and
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	171	* therefore no VBR to set
				172	*/
				173	#if !defined(CONFIG_MONITOR_IS_IN_RAM)
Wolfgang Denk	0708bc6	2010-10-07 21:51:12 +0200	[diff] [blame]	174	#if defined(CONFIG_M5282) && (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	175	move.l #CONFIG_SYS_INT_FLASH_BASE, %d0
TsiChungLiew	5bffcad	2007-10-25 17:09:17 -0500	[diff] [blame]	176	#else
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	177	move.l #CONFIG_SYS_FLASH_BASE, %d0
TsiChungLiew	5bffcad	2007-10-25 17:09:17 -0500	[diff] [blame]	178	#endif
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	179	movec %d0, %VBR
Marian Balakowicz	c20d87d	2006-05-09 11:51:51 +0200	[diff] [blame]	180	#endif
				181
Matthew Fettke	761e2e9	2008-02-04 15:38:20 -0600	[diff] [blame]	182	#ifdef CONFIG_M5275
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	183	/* set MBAR address + valid flag */
				184	move.l #(CONFIG_SYS_MBAR + 1), %d0
Matthew Fettke	761e2e9	2008-02-04 15:38:20 -0600	[diff] [blame]	185	move.l %d0, 0x40000000
				186	/* movec %d0, %MBAR */
				187
				188	/* Initialize RAMBAR: locate SRAM and validate it */
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	189	move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
Matthew Fettke	761e2e9	2008-02-04 15:38:20 -0600	[diff] [blame]	190	movec %d0, %RAMBAR1
				191	#endif
				192
TsiChung Liew	0ee47d4	2010-03-11 22:12:53 -0600	[diff] [blame]	193	/* initialize general use internal ram */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	194	move.l #0, %d0
				195	move.l #(ICACHE_STATUS), %a1 /* icache */
				196	move.l #(DCACHE_STATUS), %a2 /* icache */
				197	move.l %d0, (%a1)
				198	move.l %d0, (%a2)
TsiChung Liew	0ee47d4	2010-03-11 22:12:53 -0600	[diff] [blame]	199
angelo@sysam.it	ef9707c	2016-04-27 21:50:44 +0200	[diff] [blame]	200	/* put relocation table address to a5 */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	201	move.l #__got_start, %a5
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	202
angelo@sysam.it	ef9707c	2016-04-27 21:50:44 +0200	[diff] [blame]	203	/* setup stack initially on top of internal static ram */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	204	move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE), %sp
angelo@sysam.it	ef9707c	2016-04-27 21:50:44 +0200	[diff] [blame]	205
				206	/*
				207	* if configured, malloc_f arena will be reserved first,
				208	* then (and always) gd struct space will be reserved
				209	*/
				210	move.l %sp, -(%sp)
				211	move.l #board_init_f_alloc_reserve, %a1
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	212	jsr (%a1)
angelo@sysam.it	ef9707c	2016-04-27 21:50:44 +0200	[diff] [blame]	213
				214	/* update stack and frame-pointers */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	215	move.l %d0, %sp
				216	move.l %sp, %fp
angelo@sysam.it	ef9707c	2016-04-27 21:50:44 +0200	[diff] [blame]	217
				218	/* initialize reserved area */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	219	move.l %d0, -(%sp)
angelo@sysam.it	ef9707c	2016-04-27 21:50:44 +0200	[diff] [blame]	220	move.l #board_init_f_init_reserve, %a1
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	221	jsr (%a1)
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	222
angelo@sysam.it	b8cd132	2016-04-12 00:30:59 +0200	[diff] [blame]	223	/* run low-level CPU init code (from flash) */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	224	move.l #cpu_init_f, %a1
				225	jsr (%a1)
				226
angelo@sysam.it	b8cd132	2016-04-12 00:30:59 +0200	[diff] [blame]	227	/* run low-level board init code (from flash) */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	228	clr.l %sp@-
				229	move.l #board_init_f, %a1
				230	jsr (%a1)
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	231
Marian Balakowicz	c20d87d	2006-05-09 11:51:51 +0200	[diff] [blame]	232	/* board_init_f() does not return */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	233
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	234	/******************************************************************************/
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	235
				236	/*
				237	* void relocate_code (addr_sp, gd, addr_moni)
				238	*
				239	* This "function" does not return, instead it continues in RAM
				240	* after relocating the monitor code.
				241	*
				242	* r3 = dest
				243	* r4 = src
				244	* r5 = length in bytes
				245	* r6 = cachelinesize
				246	*/
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	247	.globl relocate_code
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	248	relocate_code:
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	249	link.w %a6,#0
				250	move.l 8(%a6), %sp /* set new stack pointer */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	251
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	252	move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
				253	move.l 16(%a6), %a0 /* Save copy of Destination Address */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	254
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	255	move.l #CONFIG_SYS_MONITOR_BASE, %a1
				256	move.l #__init_end, %a2
				257	move.l %a0, %a3
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	258	/* copy the code to RAM */
				259	1:
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	260	move.l (%a1)+, (%a3)+
				261	cmp.l %a1,%a2
				262	bgt.s 1b
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	263
				264	/*
				265	* We are done. Do not return, instead branch to second part of board
				266	* initialization, now running from RAM.
				267	*/
Wolfgang Denk	a1be476	2008-05-20 16:00:29 +0200	[diff] [blame]	268	move.l %a0, %a1
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	269	add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	270	jmp (%a1)
				271
				272	in_ram:
				273
				274	clear_bss:
Wolfgang Denk	a1be476	2008-05-20 16:00:29 +0200	[diff] [blame]	275	/*
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	276	* Now clear BSS segment
				277	*/
				278	move.l %a0, %a1
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	279	add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	280	move.l %a0, %d1
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	281	add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	282	6:
				283	clr.l (%a1)+
				284	cmp.l %a1,%d1
				285	bgt.s 6b
				286
				287	/*
				288	* fix got table in RAM
				289	*/
				290	move.l %a0, %a1
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	291	add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	292	move.l %a1,%a5 /* fix got pointer register a5 */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	293
				294	move.l %a0, %a2
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	295	add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	296
				297	7:
				298	move.l (%a1),%d1
				299	sub.l #_start,%d1
				300	add.l %a0,%d1
				301	move.l %d1,(%a1)+
				302	cmp.l %a2, %a1
				303	bne 7b
				304
				305	/* calculate relative jump to board_init_r in ram */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	306	move.l %a0, %a1
				307	add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	308
				309	/* set parameters for board_init_r */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	310	move.l %a0,-(%sp) /* dest_addr */
				311	move.l %d0,-(%sp) /* gd */
Wolfgang Denk	0708bc6	2010-10-07 21:51:12 +0200	[diff] [blame]	312	#if defined(DEBUG) && (CONFIG_SYS_TEXT_BASE != CONFIG_SYS_INT_FLASH_BASE) && \
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	313	defined(CONFIG_SYS_HALT_BEFOR_RAM_JUMP)
TsiChungLiew	8cd73be	2007-08-15 19:21:21 -0500	[diff] [blame]	314	halt
				315	#endif
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	316	jsr (%a1)
				317
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	318	/******************************************************************************/
				319
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	320	/* exception code */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	321	.globl _fault
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	322	_fault:
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	323	bra _fault
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	324
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	325	.globl _exc_handler
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	326	_exc_handler:
				327	SAVE_ALL
				328	movel %sp,%sp@-
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	329	bsr exc_handler
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	330	addql #4,%sp
				331	RESTORE_ALL
				332
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	333	.globl _int_handler
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	334	_int_handler:
				335	SAVE_ALL
				336	movel %sp,%sp@-
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	337	bsr int_handler
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	338	addql #4,%sp
				339	RESTORE_ALL
				340
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	341	/******************************************************************************/
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	342
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	343	.globl version_string
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	344	version_string:
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	345	.ascii U_BOOT_VERSION_STRING, "\0"
				346	.align 4