From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12979 invoked by alias); 1 Mar 2002 03:35:21 -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 12921 invoked from network); 1 Mar 2002 03:35:18 -0000 Received: from unknown (HELO earth.vicom.com) (206.14.133.15) by sources.redhat.com with SMTP; 1 Mar 2002 03:35:18 -0000 Received: by earth.vicom.com with Internet Mail Service (5.5.2650.21) id ; Thu, 28 Feb 2002 19:37:47 -0800 Message-ID: From: Jing Luo To: 'Jesper Skov' , Jing Luo Cc: 'Charles-Henri Balet' , eCos Discuss Date: Thu, 28 Feb 2002 20:20:00 -0000 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: text/plain; charset="iso-8859-1" Subject: RE: [ECOS] Insight 5.1.1 with Angel /serial debugger X-SW-Source: 2002-02/txt/msg00586.txt.bz2 Hi, Thanks Jesper. Now I know porting eCos is not that easy. I choose the second option you suggested - port Redboot. I changed the hal-platform-setup.h for hardware initialization. I want to start Redboot from RAM, but the problem is the memory layout came out is not the way I wanted as the following. [mlt_arm_mytarget_ram.ldi] // eCos memory layout - Thu Feb 28 18:55:04 2002 // This is a generated file - do not edit #include MEMORY { ram : ORIGIN = 0xc0000000, LENGTH = 0x2000000 } SECTIONS { SECTIONS_BEGIN SECTION_fixed_vectors (ram, 0xc0000000, LMA_EQ_VMA) SECTION_rom_vectors (ram, 0xc0020000, LMA_EQ_VMA) SECTION_text (ram, ALIGN (0x4), LMA_EQ_VMA) SECTION_fini (ram, ALIGN (0x4), LMA_EQ_VMA) SECTION_rodata (ram, ALIGN (0x4), LMA_EQ_VMA) SECTION_rodata1 (ram, ALIGN (0x4), LMA_EQ_VMA) SECTION_fixup (ram, ALIGN (0x4), LMA_EQ_VMA) SECTION_gcc_except_table (ram, ALIGN (0x4), LMA_EQ_VMA) SECTION_data (ram, ALIGN (0x4), LMA_EQ_VMA) SECTION_bss (ram, ALIGN (0x4), LMA_EQ_VMA) CYG_LABEL_DEFN(__heap1) = ALIGN (0x8); SECTIONS_END } After build library and look in the map, __exception_handlers start from address 0x20000 which is in the ROM. I am confused about that. How can I make it run from RAM? Have anyone had experience to run Redboot from RAM? Another question about the linker file: what LMA_EQ_VMA mean? Thanks, -----Original Message----- From: Jesper Skov [mailto:jskov@redhat.com] Sent: Thursday, February 28, 2002 12:24 AM To: Jing Luo Cc: 'Charles-Henri Balet'; eCos Discuss Subject: RE: [ECOS] Insight 5.1.1 with Angel /serial debugger On Wed, 2002-02-27 at 03:45, Jing Luo wrote: > The same problem with me when I am trying to port eCos to 80200EVB. > But my configuration is disable of CYGIMP_HAL_PROCESS_ALL_EXCEPTIONS and > enable of of CYGSEM_HAL_USE_ROM_MONITOR. > > If this one doesn't work, how I can do to debug eCos? and > I use Insight 5.1.1 on an ARM processor on a board with Angel 1.20, the > link, download, debugger work fine, > my problem, the ecos startup code in the Vectors.s file, this startup > replace vectors in the vector table and when the > vector of the undefined instruction is replaced, insight freeze, I'm have to > start step by step and the problem is > on the line "str r2,[r0,#0x24]" The problem is that Angel is using the CPU exception to do the single-stepping. When the eCos HAL executes and takes over that exception, Angel essentially dies. What you want to do is either (a) comment out that code to debug the application with Angel or (b) port RedBoot and make it the primary monitor and debug agent of the system. RedBoot knows how to debug eCos applications, Angel does not. Jesper -- Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos and search the list archive: http://sources.redhat.com/ml/ecos-discuss