From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 6641 invoked by alias); 3 Dec 2003 02:23:49 -0000 Mailing-List: contact ecos-discuss-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: ecos-discuss-owner@sources.redhat.com Received: (qmail 6495 invoked from network); 3 Dec 2003 02:23:48 -0000 Received: from unknown (HELO hermes.chez-thomas.org) (63.225.98.241) by sources.redhat.com with SMTP; 3 Dec 2003 02:23:48 -0000 Received: by hermes.chez-thomas.org (Postfix, from userid 2000) id D23B650D8D9; Tue, 2 Dec 2003 19:23:47 -0700 (MST) Received: from localhost (localhost.localdomain [127.0.0.1]) by hermes.chez-thomas.org (Postfix) with ESMTP id 8F09150D8C9; Tue, 2 Dec 2003 19:23:44 -0700 (MST) From: Gary Thomas To: zheng wujun Cc: ecos-discuss@sources.redhat.com, RandyLin@mxic.com.tw In-Reply-To: References: Content-Type: text/plain Organization: MLB Associates Message-Id: <1070418223.21927.2791.camel@hermes> Mime-Version: 1.0 Date: Wed, 03 Dec 2003 02:23:00 -0000 Content-Transfer-Encoding: 7bit X-Spam-Status: No, hits=-4.4 required=5.0 tests=AWL,EMAIL_ATTRIBUTION,IN_REP_TO,QUOTED_EMAIL_TEXT, REFERENCES,REPLY_WITH_QUOTES,USER_AGENT_XIMIAN autolearn=ham version=2.55 X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 2.55 (1.174.2.19-2003-05-19-exp) Subject: Re: [ECOS] How to handle it??? X-SW-Source: 2003-12/txt/msg00039.txt.bz2 On Tue, 2003-12-02 at 18:25, zheng wujun wrote: > Thanks RandyLin: > Now my redboot can work,and I can use redboot command "load ......-m > tftp....."to download app to snds board. > Howerer, if not using -r option,the error as displayed "***Abort! > Attempt to load ELF data to address: 0x00020000 which is not in RAM". > If using -r option,app looks like to be downloaded correctly,but the > display is "Raw file loaded 0x00300000-0x003c6116, assumed entry at > 0x00300000",and then if using redboot command "go 0x00300000" to execute > the app,the redboot will display some strange strings as > " > $T0a0f:86000000;0d:80060200;#17$T0a0f:86000000;0d:80060200;#17$T0a0f:8600"on > console. When you startup RedBoot, what does it tell you the available RAM regions are? For example, on this board: RAM: 0x00000000-0x00800000, [0x00038de8-0x007ec000] available The board has 8MB of RAM, starting at 0x00000000, but RedBoot uses all of the memory up to 0x00038de8. So, for this board, eCos programs are linked to start at 0x40000. Note: eCos programs are typically *not* position independent. If the program is linked to load & run at 0x20000, that's the only location in RAM where you can put it. Your example above where you overrode this and put the code at 0x30000 will never work. Loading a file with the "-r" option tells RedBoot not to interpret the contents in any way. For an ELF file, this is deadly, as you'll be trying to execute the ELF binary file header which is just a set of illegal ARM instructions! > > to above,the config is SECTION_fixed_vectors (ram, 0x20, LMA_EQ_VMA) and > SECTION_rom_vectors (ram, 0x20000, LMA_EQ_VMA) in file mlt_arm_snds_ram.ldi > and SECTION_fixed_vectors (ram, 0x20, LMA_EQ_VMA) and SECTION_data (ram, > 0x20000, FOLLOWING (.gcc_except_table)) in mlt_arm_snds_rom.ldi > > If using arm-elf-gdb to download app,the steps is as following: > 1 [root@zheng root]#arm-elf-gdb > 2(gdb) target remote /dev/ttyS0 > Remote debugging using /dev/ttyS0 > 0x01804b30 in ?? () > (gdb) load /tftpboot/hello > Loading section .rom_vectors, size 0x40 lma 0x20000 > Loading section .text, size 0xfe00 lma 0x20040 > Ignoring packet error, continuing... > Ignoring packet error, continuing... > Ignoring packet error, continuing... > > and gdb use the same serial line as the hyperspatial,the baudrate is 38400. > > > Why did these error happen?Can some one have good idea to handle it? > > Thanks a lot! > > _________________________________________________________________ > Help STOP SPAM with the new MSN 8 and get 2 months FREE* > http://join.msn.com/?page=features/junkmail -- Gary Thomas MLB Associates -- Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos and search the list archive: http://sources.redhat.com/ml/ecos-discuss