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elfloader executing loaded programs from ram (not rom) by default on msp430 platforms.

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This commit is contained in:
fros4943 2009-01-15 09:04:04 +00:00
parent c3b6ff6bd3
commit 5f3c1a0e12
2 changed files with 22 additions and 8 deletions
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27
core/loader/elfloader-msp430.c
View file

@ -28,14 +28,18 @@
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: elfloader-msp430.c,v 1.2 2006/12/18 14:54:04 fros4943 Exp $
* @(#)$Id: elfloader-msp430.c,v 1.3 2009/01/15 09:04:55 fros4943 Exp $
*/
#include "elfloader-arch.h"
#include "dev/flash.h"
static char datamemory[ELFLOADER_DATAMEMORY_SIZE];
#if ELFLOADER_CONF_TEXT_IN_ROM
static const char textmemory[ELFLOADER_TEXTMEMORY_SIZE] = {0};
#else /* ELFLOADER_CONF_TEXT_IN_ROM */
static char textmemory[ELFLOADER_TEXTMEMORY_SIZE];
#endif /* ELFLOADER_CONF_TEXT_IN_ROM */
/*---------------------------------------------------------------------------*/
void *
elfloader_arch_allocate_ram(int size)
@ -46,27 +50,32 @@ elfloader_arch_allocate_ram(int size)
void *
elfloader_arch_allocate_rom(int size)
{
#if ELFLOADER_CONF_TEXT_IN_ROM
/* Return an 512-byte aligned pointer. */
return (char *)
((unsigned long)&textmemory[0] & 0xfffffe00) +
(((unsigned long)&textmemory[0] & 0x1ff) == 0? 0: 0x200);
#else /* ELFLOADER_CONF_TEXT_IN_ROM */
return textmemory;
#endif /* ELFLOADER_CONF_TEXT_IN_ROM */
}
/*---------------------------------------------------------------------------*/
#define READSIZE 32
void
elfloader_arch_write_rom(int fd, unsigned short textoff, unsigned int size, char *mem)
{
#if ELFLOADER_CONF_TEXT_IN_ROM
int i;
unsigned int ptr;
unsigned short *flashptr;
flash_setup();
flashptr = (unsigned short *)mem;
cfs_seek(fd, textoff);
for(ptr = 0; ptr < size; ptr += READSIZE) {
/* Read data from file into RAM. */
cfs_read(fd, (unsigned char *)datamemory, READSIZE);
@ -74,7 +83,7 @@ elfloader_arch_write_rom(int fd, unsigned short textoff, unsigned int size, char
if((((unsigned short)flashptr) & 0x01ff) == 0) {
flash_clear(flashptr);
}
/* Burn data from RAM into flash ROM. Flash is burned one 16-bit
word at a time, so we need to be careful when incrementing
pointers. The flashptr is already a short pointer, so
@ -87,6 +96,10 @@ elfloader_arch_write_rom(int fd, unsigned short textoff, unsigned int size, char
}
flash_done();
#else /* ELFLOADER_CONF_TEXT_IN_ROM */
cfs_seek(fd, textoff);
cfs_read(fd, (unsigned char *)mem, size);
#endif /* ELFLOADER_CONF_TEXT_IN_ROM */
}
/*---------------------------------------------------------------------------*/
void
@ -95,8 +108,8 @@ elfloader_arch_relocate(int fd, unsigned int sectionoffset,
struct elf32_rela *rela, char *addr)
{
addr += rela->r_addend;
cfs_seek(fd, sectionoffset + rela->r_offset);
cfs_seek(fd, sectionoffset + rela->r_offset);
cfs_write(fd, (char *)&addr, 2);
}
/*---------------------------------------------------------------------------*/

3
platform/sky/contiki-conf.h
View file

@ -1,5 +1,5 @@
/* -*- C -*- */
/* @(#)$Id: contiki-conf.h,v 1.31 2008/11/06 20:45:06 nvt-se Exp $ */
/* @(#)$Id: contiki-conf.h,v 1.32 2009/01/15 09:04:04 fros4943 Exp $ */
#ifndef CONTIKI_CONF_H
#define CONTIKI_CONF_H
@ -22,6 +22,7 @@
#define RF_CHANNEL 26
#endif /* RF_CHANNEL */
#define ELFLOADER_CONF_TEXT_IN_ROM 0
#define ELFLOADER_CONF_DATAMEMORY_SIZE 0x800
#define ELFLOADER_CONF_TEXTMEMORY_SIZE 0x1000