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Help Reboot on Load
- From: Claudio Corsi <claudio dot corsi at grangepoint dot com>
- To: ecos-discuss at ecos dot sourceware dot org
- Date: Thu, 19 Jul 2007 14:36:03 -0400
- Subject: [ECOS] Help Reboot on Load
I am just starting to learn to develop with eCOS.
I am working with an x86 target (a spare pc)
I have been following the tutorial in the 'Embedded programming with
eCOS' book.
So far I have built RedBoot and have it booting from GRUB on a cdrom, I
have built a default eCOS to compile my applications with but I can not
seem to get the apps to run on the target.
When I boot into RedBoot:
RedBoot(tm) bootstrap and debug environment [GRUB]
Non-certified release, version UNKNOWN - built 13:46:05, Jul 19 2007
Platform: PC (I386)
Copyright (C) 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.
Copyright (C) 2003, 2004, 2005, 2006 eCosCentric Limited
RAM: 0x00100000-0x040f0000, [0x00190d50-0x01000000] available
RedBoot>
I am just trying to get the hello.c app to compile and run using the
following
hello.c
/* this is a simple hello world program */
#include <stdio.h>
int main(void)
{
printf("Hello, eCos world!\n");
return 0;
}
Makefile
INSTALL_DIR=../ecos/ecos_install/
XCC=i386-elf-gcc
CFLAGS=-g -Wall -I$(INSTALL_DIR)/include -ffunction-sections -fdata-sections
LDFLAGS=-nostartfiles -L$(INSTALL_DIR)/lib -Wl,--gc-sections -Wl,--Map
-Wl,hello.map
LIBS=-Ttarget.ld -nostdlib
LD=$(XCC)
all: hello
hello.o: hello.c
$(XCC) -c -o $*.o $(CFLAGS) $<
hello: hello.o
$(LD) $(LDFLAGS) -o $@ $@.o $(LIBS)
These files are as per the tutorial
Everything builds without error.
When I try to load hello.srec from my tftp server the target PC reboots
as soon as the transfer starts, if I specify a base address to the load
then the transfer will complete with the following output
RAM: 0x00100000-0x040f0000, [0x00190d50-0x01000000] available
RedBoot> load -v -b 0x00190d50 -h 192.168.0.11 hello.srec
Using default protocol (TFTP)
Address offset = 0x00088d50
Entry point: 0x00190d50, address range: 0x00190d50-0x00199030
RedBoot>
but when i try to run the app with 'go' or 'go 0x00190d50' the computer
hangs
Any help would be appreciated.
Claudio Corsi
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