/*
* armboot - Startup Code for ARM920 CPU-core
*
- * Copyright (c) 2001 Marius Gröger <mag@sysgo.de>
- * Copyright (c) 2002 Alex Z
üpke <azu@sysgo.de>
+ * Copyright (c) 2001 Marius Gröger <mag@sysgo.de>
+ * Copyright (c) 2002 Alex Z
üpke <azu@sysgo.de>
* Copyright (c) 2002 Gary Jennejohn <garyj@denx.de>
*
- * 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
+ * SPDX-License-Identifier: GPL-2.0+
*/
+#include <asm-offsets.h>
#include <common.h>
#include <config.h>
*************************************************************************
*/
-_TEXT_BASE:
- .word TEXT_BASE
-
-.globl _armboot_start
-_armboot_start:
- .word _start
-
-/*
- * These are defined in the board-specific linker script.
- */
-.globl _bss_start
-_bss_start:
- .word __bss_start
-
-.globl _bss_end
-_bss_end:
- .word _end
-
#ifdef CONFIG_USE_IRQ
/* IRQ stack memory (calculated at run-time) */
.globl IRQ_STACK_START
.word 0x0badc0de
#endif
+/* IRQ stack memory (calculated at run-time) + 8 bytes */
+.globl IRQ_STACK_START_IN
+IRQ_STACK_START_IN:
+ .word 0x0badc0de
/*
* the actual start code
orr r0, r0, #0xd3
msr cpsr, r0
- bl coloured_LED_init
- bl red_LED_on
-
#if defined(CONFIG_AT91RM9200DK) || defined(CONFIG_AT91RM9200EK)
/*
* relocate exception table
# if defined(CONFIG_S3C2400)
# define pWTCON 0x15300000
-# define INTMSK 0x14400008 /* Interupt-Controller base addresses */
+# define INTMSK 0x14400008 /* Interrupt-Controller base addresses */
# define CLKDIVN 0x14800014 /* clock divisor register */
#else
# define pWTCON 0x53000000
-# define INTMSK 0x4A000008 /* Interupt-Controller base addresses */
+# define INTMSK 0x4A000008 /* Interrupt-Controller base addresses */
# define INTSUBMSK 0x4A00001C
# define CLKDIVN 0x4C000014 /* clock divisor register */
# endif
bl cpu_init_crit
#endif
-#ifndef CONFIG_SKIP_RELOCATE_UBOOT
-relocate: /* relocate U-Boot to RAM */
- adr r0, _start /* r0 <- current position of code */
- ldr r1, _TEXT_BASE /* test if we run from flash or RAM */
- cmp r0, r1 /* don't reloc during debug */
- beq stack_setup
-
- ldr r2, _armboot_start
- ldr r3, _bss_start
- sub r2, r3, r2 /* r2 <- size of armboot */
- add r2, r0, r2 /* r2 <- source end address */
-
-copy_loop:
- ldmia r0!, {r3-r10} /* copy from source address [r0] */
- stmia r1!, {r3-r10} /* copy to target address [r1] */
- cmp r0, r2 /* until source end addreee [r2] */
- ble copy_loop
-#endif /* CONFIG_SKIP_RELOCATE_UBOOT */
-
- /* Set up the stack */
-stack_setup:
- ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
- sub r0, r0, #CONFIG_SYS_MALLOC_LEN /* malloc area */
- sub r0, r0, #CONFIG_SYS_GBL_DATA_SIZE /* bdinfo */
-#ifdef CONFIG_USE_IRQ
- sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ)
-#endif
- sub sp, r0, #12 /* leave 3 words for abort-stack */
- bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
-
-clear_bss:
- ldr r0, _bss_start /* find start of bss segment */
- ldr r1, _bss_end /* stop here */
- mov r2, #0x00000000 /* clear */
+ bl _main
-clbss_l:str r2, [r0] /* clear loop... */
- add r0, r0, #4
- cmp r0, r1
- ble clbss_l
+/*------------------------------------------------------------------------------*/
- ldr pc, _start_armboot
-
-_start_armboot: .word start_armboot
+ .globl c_runtime_cpu_setup
+c_runtime_cpu_setup:
+ mov pc, lr
/*
*************************************************************************
.macro bad_save_user_regs
sub sp, sp, #S_FRAME_SIZE
stmia sp, {r0 - r12} @ Calling r0-r12
- ldr r2, _armboot_start
- sub r2, r2, #(CONFIG_STACKSIZE)
- sub r2, r2, #(CONFIG_SYS_MALLOC_LEN)
- /* set base 2 words into abort stack */
- sub r2, r2, #(CONFIG_SYS_GBL_DATA_SIZE+8)
+ ldr r2, IRQ_STACK_START_IN
ldmia r2, {r2 - r3} @ get pc, cpsr
add r0, sp, #S_FRAME_SIZE @ restore sp_SVC
.endm
.macro get_bad_stack
- ldr r13, _armboot_start @ setup our mode stack
- sub r13, r13, #(CONFIG_STACKSIZE)
- sub r13, r13, #(CONFIG_SYS_MALLOC_LEN)
- /* reserve a couple spots in abort stack */
- sub r13, r13, #(CONFIG_SYS_GBL_DATA_SIZE+8)
+ ldr r13, IRQ_STACK_START_IN @ setup our mode stack
str lr, [r13] @ save caller lr / spsr
mrs lr, spsr
projects / karo-tx-uboot.git / blobdiff