mirror of
https://github.com/RIOT-OS/RIOT.git
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2d415d16c9
- split up interrupt vector code from bootloader.c to vectors.c
- moved bootloader.c to arm7_init.c
- Use consistent naming:
- use lower case for everything but preprocessor stuff
- ISRs now named isr_foo()
80 lines
1.6 KiB
C
80 lines
1.6 KiB
C
/*
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* Copyright 2008-2009, Freie Universitaet Berlin (FUB). All rights reserved.
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup cpu_arm7_common
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* @{
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*
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* @file
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* @brief Common ARM7 boot up code
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*
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* @author Heiko Will <hwill@inf.fu-berlin.de>
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* @author Michael Baar <michael.baar@fu-berlin.de>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "thread.h"
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#include "log.h"
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static inline void
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_init_data(void)
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{
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extern unsigned int _etext;
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extern unsigned int _data;
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extern unsigned int _edata;
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extern unsigned int __bss_start;
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extern unsigned int __bss_end;
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register unsigned int *p1;
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register unsigned int *p2;
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register unsigned int *p3;
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// initialize data from flash
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// (linker script ensures that data is 32-bit aligned)
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p1 = &_etext;
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p2 = &_data;
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p3 = &_edata;
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while (p2 < p3) {
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*p2++ = *p1++;
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}
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// clear bss
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// (linker script ensures that bss is 32-bit aligned)
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p1 = &__bss_start;
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p2 = &__bss_end;
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while (p1 < p2) {
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*p1++ = 0;
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}
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}
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void bootloader(void)
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{
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extern void bl_init_ports(void);
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extern void bl_init_clks(void);
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/* board specific setup of clocks */
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bl_init_clks();
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/* initialize bss and data */
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_init_data();
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/* board specific setup of i/o pins */
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bl_init_ports();
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#ifdef MODULE_NEWLIB
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extern void __libc_init_array(void);
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__libc_init_array();
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#endif
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}
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/** @} */
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