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
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	13	#define _START _start
				14	#define _FAULT _fault
				15
				16
				17	#define SAVE_ALL \
				18	move.w #0x2700,%sr; /* disable intrs */ \
				19	subl #60,%sp; /* space for 15 regs */ \
				20	moveml %d0-%d7/%a0-%a6,%sp@; \
				21
				22	#define RESTORE_ALL \
				23	moveml %sp@,%d0-%d7/%a0-%a6; \
				24	addl #60,%sp; /* space for 15 regs */ \
				25	rte
				26
				27	/* If we come from a pre-loader we don't need an initial exception
				28	* table.
				29	*/
				30	#if !defined(CONFIG_MONITOR_IS_IN_RAM)
				31
				32	.text
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	33
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	34	/*
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	35	* Vector table. This is used for initial platform startup.
				36	* These vectors are to catch any un-intended traps.
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	37	*/
				38	_vectors:
Wolfgang Denk	b4b1c46	2006-06-10 19:27:47 +0200	[diff] [blame]	39	.long 0x00000000 /* Flash offset is 0 until we setup CS0 */
Wolfgang Denk	0708bc6	2010-10-07 21:51:12 +0200	[diff] [blame]	40	#if defined(CONFIG_M5282) && (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
				41	.long _start - CONFIG_SYS_TEXT_BASE
Zachary P. Landau	0bba862	2006-01-26 17:35:56 -0500	[diff] [blame]	42	#else
Wolfgang Denk	b4b1c46	2006-06-10 19:27:47 +0200	[diff] [blame]	43	.long _START
Zachary P. Landau	0bba862	2006-01-26 17:35:56 -0500	[diff] [blame]	44	#endif
Wolfgang Denk	b4b1c46	2006-06-10 19:27:47 +0200	[diff] [blame]	45
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	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, _FAULT, _FAULT
				53	.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
				54
				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
				62	.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
				63
				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
				71	.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
				72
				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
				81
				82	#endif
				83
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	84	.text
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	85
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	86	#if defined(CONFIG_SYS_INT_FLASH_BASE) && \
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	87	(defined(CONFIG_M5282) \|\| defined(CONFIG_M5281))
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	88	#if (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
				89	.long 0x55AA55AA,0xAA55AA55 /* CFM Backdoorkey */
				90	.long 0xFFFFFFFF /* all sectors protected */
				91	.long 0x00000000 /* supervisor/User restriction */
				92	.long 0x00000000 /* programm/data space restriction */
				93	.long 0x00000000 /* Flash security */
				94	#endif
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	95	#endif
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	96
				97	.globl _start
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	98	_start:
				99	nop
				100	nop
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	101	move.w #0x2700,%sr
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	102
TsiChung Liew	b354aef	2009-06-12 11:29:00 +0000	[diff] [blame]	103	#if defined(CONFIG_M5208)
				104	/* Initialize RAMBAR: locate SRAM and validate it */
				105	move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
				106	movec %d0, %RAMBAR1
				107	#endif
				108
TsiChungLiew	3467469	2007-08-16 13:20:50 -0500	[diff] [blame]	109	#if defined(CONFIG_M5272) \|\| defined(CONFIG_M5249) \|\| defined(CONFIG_M5253)
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	110	/* set MBAR address + valid flag */
				111	move.l #(CONFIG_SYS_MBAR + 1), %d0
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	112	move.c %d0, %MBAR
				113
stroese	53395a2	2004-12-16 18:09:49 +0000	[diff] [blame]	114	/* The 5249 has MBAR2 as well */
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	115	#ifdef CONFIG_SYS_MBAR2
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	116	/* Get MBAR2 address */
				117	move.l #(CONFIG_SYS_MBAR2 + 1), %d0
				118	/* Set MBAR2 */
				119	movec %d0, #0xc0e
stroese	53395a2	2004-12-16 18:09:49 +0000	[diff] [blame]	120	#endif
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	121	move.l #(CONFIG_SYS_INIT_RAM_ADDR + 1), %d0
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	122	movec %d0, %RAMBAR0
TsiChungLiew	3467469	2007-08-16 13:20:50 -0500	[diff] [blame]	123	#endif /* CONFIG_M5272 \|\| CONFIG_M5249 \|\| CONFIG_M5253 */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	124
Wolfgang Denk	b4b1c46	2006-06-10 19:27:47 +0200	[diff] [blame]	125	#if defined(CONFIG_M5282) \|\| defined(CONFIG_M5271)
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	126	/* set MBAR address + valid flag */
				127	move.l #(CONFIG_SYS_MBAR + 1), %d0
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	128	move.l %d0, 0x40000000
				129
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	130	/* Initialize RAMBAR1: locate SRAM and validate it */
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	131	move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	132	movec %d0, %RAMBAR1
				133
Bartlomiej Sieka	8ff81c6	2006-12-20 00:27:32 +0100	[diff] [blame]	134	#if defined(CONFIG_M5282)
Wolfgang Denk	0708bc6	2010-10-07 21:51:12 +0200	[diff] [blame]	135	#if (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	136	/*
				137	* Setup code in SRAM to initialize FLASHBAR,
				138	* if start from internal Flash
				139	*/
				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
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	143	_copy_flash:
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	144	move.l (%a0)+, (%a2)+
				145	cmp.l %a0, %a1
				146	bgt.s _copy_flash
				147	jmp CONFIG_SYS_INIT_RAM_ADDR
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	148
				149	_flashbar_setup:
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	150	/* Initialize FLASHBAR: locate internal Flash and validate it */
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	151	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]	152	movec %d0, %FLASHBAR
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	153	jmp _after_flashbar_copy.L /* Force jump to absolute address */
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	154	_flashbar_setup_end:
				155	nop
				156	_after_flashbar_copy:
				157	#else
				158	/* Setup code to initialize FLASHBAR, if start from external Memory */
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	159	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]	160	movec %d0, %FLASHBAR
Wolfgang Denk	0708bc6	2010-10-07 21:51:12 +0200	[diff] [blame]	161	#endif /* (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE) */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	162
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	163	#endif
Wolfgang Denk	5b1657d	2006-09-04 01:03:57 +0200	[diff] [blame]	164	#endif
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	165	/*
				166	* 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]	167	* therefore no VBR to set
				168	*/
				169	#if !defined(CONFIG_MONITOR_IS_IN_RAM)
Wolfgang Denk	0708bc6	2010-10-07 21:51:12 +0200	[diff] [blame]	170	#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]	171	move.l #CONFIG_SYS_INT_FLASH_BASE, %d0
TsiChungLiew	5bffcad	2007-10-25 17:09:17 -0500	[diff] [blame]	172	#else
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	173	move.l #CONFIG_SYS_FLASH_BASE, %d0
TsiChungLiew	5bffcad	2007-10-25 17:09:17 -0500	[diff] [blame]	174	#endif
Heiko Schocher	ac1956e	2006-04-20 08:42:42 +0200	[diff] [blame]	175	movec %d0, %VBR
Marian Balakowicz	c20d87d	2006-05-09 11:51:51 +0200	[diff] [blame]	176	#endif
				177
Matthew Fettke	761e2e9	2008-02-04 15:38:20 -0600	[diff] [blame]	178	#ifdef CONFIG_M5275
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	179	/* set MBAR address + valid flag */
				180	move.l #(CONFIG_SYS_MBAR + 1), %d0
Matthew Fettke	761e2e9	2008-02-04 15:38:20 -0600	[diff] [blame]	181	move.l %d0, 0x40000000
				182	/* movec %d0, %MBAR */
				183
				184	/* Initialize RAMBAR: locate SRAM and validate it */
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	185	move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
Matthew Fettke	761e2e9	2008-02-04 15:38:20 -0600	[diff] [blame]	186	movec %d0, %RAMBAR1
				187	#endif
				188
TsiChung Liew	0ee47d4	2010-03-11 22:12:53 -0600	[diff] [blame]	189	/* initialize general use internal ram */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	190	move.l #0, %d0
				191	move.l #(ICACHE_STATUS), %a1 /* icache */
				192	move.l #(DCACHE_STATUS), %a2 /* icache */
				193	move.l %d0, (%a1)
				194	move.l %d0, (%a2)
TsiChung Liew	0ee47d4	2010-03-11 22:12:53 -0600	[diff] [blame]	195
angelo@sysam.it	ef9707c	2016-04-27 21:50:44 +0200	[diff] [blame]	196	/* put relocation table address to a5 */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	197	move.l #__got_start, %a5
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	198
angelo@sysam.it	ef9707c	2016-04-27 21:50:44 +0200	[diff] [blame]	199	/* setup stack initially on top of internal static ram */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	200	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]	201
				202	/*
				203	* if configured, malloc_f arena will be reserved first,
				204	* then (and always) gd struct space will be reserved
				205	*/
				206	move.l %sp, -(%sp)
				207	move.l #board_init_f_alloc_reserve, %a1
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	208	jsr (%a1)
angelo@sysam.it	ef9707c	2016-04-27 21:50:44 +0200	[diff] [blame]	209
				210	/* update stack and frame-pointers */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	211	move.l %d0, %sp
				212	move.l %sp, %fp
angelo@sysam.it	ef9707c	2016-04-27 21:50:44 +0200	[diff] [blame]	213
				214	/* initialize reserved area */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	215	move.l %d0, -(%sp)
angelo@sysam.it	ef9707c	2016-04-27 21:50:44 +0200	[diff] [blame]	216	move.l #board_init_f_init_reserve, %a1
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	217	jsr (%a1)
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	218
angelo@sysam.it	b8cd132	2016-04-12 00:30:59 +0200	[diff] [blame]	219	/* run low-level CPU init code (from flash) */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	220	move.l #cpu_init_f, %a1
				221	jsr (%a1)
				222
angelo@sysam.it	b8cd132	2016-04-12 00:30:59 +0200	[diff] [blame]	223	/* run low-level board init code (from flash) */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	224	clr.l %sp@-
				225	move.l #board_init_f, %a1
				226	jsr (%a1)
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	227
Marian Balakowicz	c20d87d	2006-05-09 11:51:51 +0200	[diff] [blame]	228	/* board_init_f() does not return */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	229
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	230	/******************************************************************************/
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	231
				232	/*
				233	* void relocate_code (addr_sp, gd, addr_moni)
				234	*
				235	* This "function" does not return, instead it continues in RAM
				236	* after relocating the monitor code.
				237	*
				238	* r3 = dest
				239	* r4 = src
				240	* r5 = length in bytes
				241	* r6 = cachelinesize
				242	*/
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	243	.globl relocate_code
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	244	relocate_code:
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	245	link.w %a6,#0
				246	move.l 8(%a6), %sp /* set new stack pointer */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	247
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	248	move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
				249	move.l 16(%a6), %a0 /* Save copy of Destination Address */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	250
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	251	move.l #CONFIG_SYS_MONITOR_BASE, %a1
				252	move.l #__init_end, %a2
				253	move.l %a0, %a3
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	254	/* copy the code to RAM */
				255	1:
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	256	move.l (%a1)+, (%a3)+
				257	cmp.l %a1,%a2
				258	bgt.s 1b
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	259
				260	/*
				261	* We are done. Do not return, instead branch to second part of board
				262	* initialization, now running from RAM.
				263	*/
Wolfgang Denk	a1be476	2008-05-20 16:00:29 +0200	[diff] [blame]	264	move.l %a0, %a1
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	265	add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	266	jmp (%a1)
				267
				268	in_ram:
				269
				270	clear_bss:
Wolfgang Denk	a1be476	2008-05-20 16:00:29 +0200	[diff] [blame]	271	/*
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	272	* Now clear BSS segment
				273	*/
				274	move.l %a0, %a1
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	275	add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	276	move.l %a0, %d1
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	277	add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	278	6:
				279	clr.l (%a1)+
				280	cmp.l %a1,%d1
				281	bgt.s 6b
				282
				283	/*
				284	* fix got table in RAM
				285	*/
				286	move.l %a0, %a1
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	287	add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	288	move.l %a1,%a5 /* fix got pointer register a5 */
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	289
				290	move.l %a0, %a2
Jean-Christophe PLAGNIOL-VILLARD	0383694	2008-10-16 15:01:15 +0200	[diff] [blame]	291	add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	292
				293	7:
				294	move.l (%a1),%d1
				295	sub.l #_start,%d1
				296	add.l %a0,%d1
				297	move.l %d1,(%a1)+
				298	cmp.l %a2, %a1
				299	bne 7b
				300
				301	/* calculate relative jump to board_init_r in ram */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	302	move.l %a0, %a1
				303	add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	304
				305	/* set parameters for board_init_r */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	306	move.l %a0,-(%sp) /* dest_addr */
				307	move.l %d0,-(%sp) /* gd */
Wolfgang Denk	0708bc6	2010-10-07 21:51:12 +0200	[diff] [blame]	308	#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]	309	defined(CONFIG_SYS_HALT_BEFOR_RAM_JUMP)
TsiChungLiew	8cd73be	2007-08-15 19:21:21 -0500	[diff] [blame]	310	halt
				311	#endif
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	312	jsr (%a1)
				313
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	314	/******************************************************************************/
				315
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	316	/* exception code */
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	317	.globl _fault
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	318	_fault:
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	319	bra _fault
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	320
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	321	.globl _exc_handler
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	322	_exc_handler:
				323	SAVE_ALL
				324	movel %sp,%sp@-
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	325	bsr exc_handler
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	326	addql #4,%sp
				327	RESTORE_ALL
				328
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	329	.globl _int_handler
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	330	_int_handler:
				331	SAVE_ALL
				332	movel %sp,%sp@-
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	333	bsr int_handler
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	334	addql #4,%sp
				335	RESTORE_ALL
				336
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	337	/******************************************************************************/
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	338
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	339	.globl version_string
wdenk	e65527f	2004-02-12 00:47:09 +0000	[diff] [blame]	340	version_string:
Angelo Dureghello	65d5991	2016-05-22 00:14:29 +0200	[diff] [blame]	341	.ascii U_BOOT_VERSION_STRING, "\0"
				342	.align 4