+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
* Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
*/
+#include <asm-offsets.h>
#include <config.h>
-#include <timestamp.h>
-#include "version.h"
#include <asm/cache.h>
-#ifndef CONFIG_IDENT_STRING
-#define CONFIG_IDENT_STRING ""
-#endif
-
#define _START _start
#define _FAULT _fault
rte;
#if defined(CONFIG_CF_SBF)
-#define ASM_DRAMINIT (asm_dram_init - CONFIG_SYS_TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR)
-#define ASM_SBF_IMG_HDR (asm_sbf_img_hdr - CONFIG_SYS_TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR)
+#define ASM_DRAMINIT (asm_dram_init - CONFIG_SYS_TEXT_BASE + \
+ CONFIG_SYS_INIT_RAM_ADDR)
+#define ASM_SBF_IMG_HDR (asm_sbf_img_hdr - CONFIG_SYS_TEXT_BASE + \
+ CONFIG_SYS_INIT_RAM_ADDR)
#endif
.text
+
/*
- * Vector table. This is used for initial platform startup.
- * These vectors are to catch any un-intended traps.
+ * Vector table. This is used for initial platform startup.
+ * These vectors are to catch any un-intended traps.
*/
_vectors:
-
#if defined(CONFIG_CF_SBF)
-INITSP: .long 0 /* Initial SP */
-INITPC: .long ASM_DRAMINIT /* Initial PC */
+INITSP: .long 0 /* Initial SP */
+INITPC: .long ASM_DRAMINIT /* Initial PC */
#else
-INITSP: .long 0 /* Initial SP */
-INITPC: .long _START /* Initial PC */
+INITSP: .long 0 /* Initial SP */
+INITPC: .long _START /* Initial PC */
#endif
-vector02: .long _FAULT /* Access Error */
-vector03: .long _FAULT /* Address Error */
-vector04: .long _FAULT /* Illegal Instruction */
-vector05: .long _FAULT /* Reserved */
-vector06: .long _FAULT /* Reserved */
-vector07: .long _FAULT /* Reserved */
-vector08: .long _FAULT /* Privilege Violation */
-vector09: .long _FAULT /* Trace */
-vector0A: .long _FAULT /* Unimplemented A-Line */
-vector0B: .long _FAULT /* Unimplemented F-Line */
-vector0C: .long _FAULT /* Debug Interrupt */
-vector0D: .long _FAULT /* Reserved */
-vector0E: .long _FAULT /* Format Error */
-vector0F: .long _FAULT /* Unitialized Int. */
+vector02_0F:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
/* Reserved */
vector10_17:
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-vector18: .long _FAULT /* Spurious Interrupt */
-vector19: .long _FAULT /* Autovector Level 1 */
-vector1A: .long _FAULT /* Autovector Level 2 */
-vector1B: .long _FAULT /* Autovector Level 3 */
-vector1C: .long _FAULT /* Autovector Level 4 */
-vector1D: .long _FAULT /* Autovector Level 5 */
-vector1E: .long _FAULT /* Autovector Level 6 */
-vector1F: .long _FAULT /* Autovector Level 7 */
+vector18_1F:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
#if !defined(CONFIG_CF_SBF)
/* TRAP #0 - #15 */
#if defined(CONFIG_CF_SBF)
/* Image header: chksum 4 bytes, len 4 bytes, img dest 4 bytes */
asm_sbf_img_hdr:
- .long 0x00000000 /* checksum, not yet implemented */
- .long 0x00020000 /* image length */
+ .long 0x00000000 /* checksum, not yet implemented */
+ .long 0x00020000 /* image length */
.long CONFIG_SYS_TEXT_BASE /* image to be relocated at */
asm_dram_init:
move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
- movec %d0, %RAMBAR1 /* init Rambar */
+ movec %d0, %RAMBAR1 /* init Rambar */
+
move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
- clr.l %sp@-
+ clr.l %sp@-
/* Must disable global address */
move.l #0xFC008000, %a1
* Dram Initialization
* a1, a2, and d0
*/
- /* mscr sdram */
move.l #0xFC0A4074, %a1
move.b #(CONFIG_SYS_SDRAM_DRV_STRENGTH), (%a1)
nop
move.b (%a3), %d1
rts
-#endif /* CONFIG_CF_SBF */
+#endif /* CONFIG_CF_SBF */
- .text
+.text
. = 0x400
- .globl _start
+.globl _start
_start:
nop
nop
- move.w #0x2700,%sr /* Mask off Interrupt */
+ move.w #0x2700,%sr /* Mask off Interrupt */
/* Set vector base register at the beginning of the Flash */
#if defined(CONFIG_CF_SBF)
movec %d0, %ACR1
/* initialize general use internal ram */
- move.l #0, %d0
- move.l #(ICACHE_STATUS), %a1 /* icache */
- move.l #(DCACHE_STATUS), %a2 /* icache */
- move.l %d0, (%a1)
- move.l %d0, (%a2)
-
- /* set stackpointer to end of internal ram to get some stackspace for
- the first c-code */
- move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
- clr.l %sp@-
+ move.l #0, %d0
+ move.l #(ICACHE_STATUS), %a1 /* icache */
+ move.l #(DCACHE_STATUS), %a2 /* icache */
+ move.l %d0, (%a1)
+ move.l %d0, (%a2)
+
+ /* put relocation table address to a5 */
+ move.l #__got_start, %a5
+
+ /* setup stack initially on top of internal static ram */
+ move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE), %sp
+
+ /*
+ * if configured, malloc_f arena will be reserved first,
+ * then (and always) gd struct space will be reserved
+ */
+ move.l %sp, -(%sp)
+ bsr board_init_f_alloc_reserve
+
+ /* update stack and frame-pointers */
+ move.l %d0, %sp
+ move.l %sp, %fp
+
+ /* initialize reserved area */
+ move.l %d0, -(%sp)
+ bsr board_init_f_init_reserve
- move.l #__got_start, %a5 /* put relocation table address to a5 */
+ /* run low-level CPU init code (from flash) */
+ bsr cpu_init_f
+ clr.l %sp@-
- bsr cpu_init_f /* run low-level CPU init code (from flash) */
- bsr board_init_f /* run low-level board init code (from flash) */
+ /* run low-level board init code (from flash) */
+ move.l #board_init_f, %a1
+ jsr (%a1)
/* board_init_f() does not return */
-/*------------------------------------------------------------------------------*/
+/******************************************************************************/
/*
- * void relocate_code (addr_sp, gd, addr_moni)
+ * void relocate_code(addr_sp, gd, addr_moni)
*
* This "function" does not return, instead it continues in RAM
* after relocating the monitor code.
* r5 = length in bytes
* r6 = cachelinesize
*/
- .globl relocate_code
+.globl relocate_code
relocate_code:
- link.w %a6,#0
- move.l 8(%a6), %sp /* set new stack pointer */
+ link.w %a6,#0
+ move.l 8(%a6), %sp /* set new stack pointer */
- move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
- move.l 16(%a6), %a0 /* Save copy of Destination Address */
+ move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
+ move.l 16(%a6), %a0 /* Save copy of Destination Address */
- move.l #CONFIG_SYS_MONITOR_BASE, %a1
- move.l #__init_end, %a2
- move.l %a0, %a3
+ move.l #CONFIG_SYS_MONITOR_BASE, %a1
+ move.l #__init_end, %a2
+ move.l %a0, %a3
/* copy the code to RAM */
1:
- move.l (%a1)+, (%a3)+
- cmp.l %a1,%a2
- bgt.s 1b
+ move.l (%a1)+, (%a3)+
+ cmp.l %a1,%a2
+ bgt.s 1b
/*
* We are done. Do not return, instead branch to second part of board
*/
move.l %a0, %a1
add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
- move.l %a1,%a5 /* * fix got pointer register a5 */
+ move.l %a1,%a5 /* fix got pointer register a5 */
move.l %a0, %a2
add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
bne 7b
/* calculate relative jump to board_init_r in ram */
- move.l %a0, %a1
- add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
+ move.l %a0, %a1
+ add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
/* set parameters for board_init_r */
- move.l %a0,-(%sp) /* dest_addr */
- move.l %d0,-(%sp) /* gd */
+ move.l %a0,-(%sp) /* dest_addr */
+ move.l %d0,-(%sp) /* gd */
jsr (%a1)
-/*------------------------------------------------------------------------------*/
+/******************************************************************************/
+
/* exception code */
- .globl _fault
+.globl _fault
_fault:
- jmp _fault
- .globl _exc_handler
+ bra _fault
+.globl _exc_handler
_exc_handler:
SAVE_ALL
movel %sp,%sp@-
- bsr exc_handler
+ bsr exc_handler
addql #4,%sp
RESTORE_ALL
- .globl _int_handler
+.globl _int_handler
_int_handler:
SAVE_ALL
movel %sp,%sp@-
- bsr int_handler
+ bsr int_handler
addql #4,%sp
RESTORE_ALL
-/*------------------------------------------------------------------------------*/
+/******************************************************************************/
- .globl version_string
-version_string:
- .ascii U_BOOT_VERSION
- .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
- .ascii CONFIG_IDENT_STRING, "\0"
- .align 4
+.align 4
projects / platform / kernel / u-boot.git / blobdiff