116 lines
4.2 KiB
C
116 lines
4.2 KiB
C
/*
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* Copyright (c) 2005, Swedish Institute of Computer Science
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* @(#)$Id: elfloader-msp430.c,v 1.4 2009/02/27 14:28:02 nvt-se Exp $
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*/
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#include "elfloader-arch.h"
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#include "dev/flash.h"
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static char datamemory[ELFLOADER_DATAMEMORY_SIZE];
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#if ELFLOADER_CONF_TEXT_IN_ROM
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static const char textmemory[ELFLOADER_TEXTMEMORY_SIZE] = {0};
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#else /* ELFLOADER_CONF_TEXT_IN_ROM */
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static char textmemory[ELFLOADER_TEXTMEMORY_SIZE];
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#endif /* ELFLOADER_CONF_TEXT_IN_ROM */
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/*---------------------------------------------------------------------------*/
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void *
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elfloader_arch_allocate_ram(int size)
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{
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return datamemory;
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}
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/*---------------------------------------------------------------------------*/
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void *
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elfloader_arch_allocate_rom(int size)
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{
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#if ELFLOADER_CONF_TEXT_IN_ROM
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/* Return an 512-byte aligned pointer. */
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return (char *)
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((unsigned long)&textmemory[0] & 0xfffffe00) +
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(((unsigned long)&textmemory[0] & 0x1ff) == 0? 0: 0x200);
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#else /* ELFLOADER_CONF_TEXT_IN_ROM */
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return textmemory;
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#endif /* ELFLOADER_CONF_TEXT_IN_ROM */
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}
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/*---------------------------------------------------------------------------*/
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#define READSIZE 32
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void
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elfloader_arch_write_rom(int fd, unsigned short textoff, unsigned int size, char *mem)
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{
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#if ELFLOADER_CONF_TEXT_IN_ROM
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int i;
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unsigned int ptr;
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unsigned short *flashptr;
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flash_setup();
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flashptr = (unsigned short *)mem;
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cfs_seek(fd, textoff, CFS_SEEK_SET);
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for(ptr = 0; ptr < size; ptr += READSIZE) {
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/* Read data from file into RAM. */
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cfs_read(fd, (unsigned char *)datamemory, READSIZE);
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/* Clear flash page on 512 byte boundary. */
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if((((unsigned short)flashptr) & 0x01ff) == 0) {
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flash_clear(flashptr);
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}
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/* Burn data from RAM into flash ROM. Flash is burned one 16-bit
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word at a time, so we need to be careful when incrementing
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pointers. The flashptr is already a short pointer, so
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incrementing it by one will actually increment the address by
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two. */
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for(i = 0; i < READSIZE / 2; ++i) {
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flash_write(flashptr, ((unsigned short *)datamemory)[i]);
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++flashptr;
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}
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}
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flash_done();
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#else /* ELFLOADER_CONF_TEXT_IN_ROM */
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cfs_seek(fd, textoff, CFS_SEEK_SET);
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cfs_read(fd, (unsigned char *)mem, size);
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#endif /* ELFLOADER_CONF_TEXT_IN_ROM */
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}
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/*---------------------------------------------------------------------------*/
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void
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elfloader_arch_relocate(int fd, unsigned int sectionoffset,
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char *sectionaddr,
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struct elf32_rela *rela, char *addr)
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{
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addr += rela->r_addend;
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cfs_seek(fd, sectionoffset + rela->r_offset, CFS_SEEK_SET);
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cfs_write(fd, (char *)&addr, 2);
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}
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/*---------------------------------------------------------------------------*/
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