[ECOS] How to handle it???

Gary Thomas gary@mlbassoc.com
Thu Dec 4 20:50:00 GMT 2003


On Wed, 2003-12-03 at 20:32, RandyLin@mxic.com.tw wrote:
> Can you check your project directory XXXX_install/include/pkgconf/hal.h
> There should be
> =======================
> #define CYGSEM_HAL_VIRTUAL_VECTOR_INHERIT_CONSOLE 1
> =======================
> if not, maybe that's the problem.
> I think your output is encode by mangler.
> and gdb know the format, and works fine.
> but hyperteminal know nothing about it, so ugly string output.
> 

This has nothing to do with his problem.  He's getting these GDB
strings because he's trying to execute code which was either loaded
into the wrong location or isn't code at all.  I've already explained
both cases - "zheng wujun" (I don't know which is the family name,
sorry) needs to adjust the memory map for the SNDS platform as
obviously there is a clash between the RAM application and RedBoot.

> 
> 
>                                                                                                                        
>                       "zheng wujun"                                                                                    
>                       <wj_zheng10@hotmail.com>           收件人: RandyLin@mxic.com.tw                                 
>                       寄件人:                           副本抄送:     ecos-discuss@sources.redhat.com                
>                       ecos-discuss-owner@sources         主旨:   RE: [ECOS] How to handle it???                       
>                       .redhat.com                                                                                      
>                                                                                                                        
>                                                                                                                        
>                       2003/12/04 11:10 AM                                                                              
>                                                                                                                        
>                                                                                                                        
> 
> 
> 
> 
> 
> 
> >From: RandyLin@mxic.com.tw
> >To: ecos-discuss@sources.redhat.com
> >CC: wj_zheng10@hotmail.com
> >Subject: RE: [ECOS] How to handle it???
> >Date: Wed, 3 Dec 2003 17:16:43 +0800
> >
> >
> >It's nice to hear that you can use gdb to run the ap:)
> >your mlt_arm_snds_ram.ldi and mlt_arm_snds_rom.ldi seems fine.
> >I add the following to hal_arm_snds.cdl, copy from hal_arm_at91.cdl
> >==================================
> >+    cdl_option CYGSEM_HAL_USE_ROM_MONITOR {
> >+         display       "Work with a ROM monitor"
> >+         flavor        booldata
> >+         legal_values  { "Generic" "GDB_stubs" }
> >+         default_value { CYG_HAL_STARTUP == "RAM" ? "GDB_stubs" : 0 }
> >+         parent        CYGPKG_HAL_ROM_MONITOR
> >+         requires      { CYG_HAL_STARTUP == "RAM" }
> >+         description   "
> >+             Support can be enabled for different varieties of ROM
> >monitor.
> >+             This support changes various eCos semantics such as the
> >encoding
> >+             of diagnostic output, or the overriding of hardware
> interrupt
> >+             vectors.
> >+             Firstly there is \"Generic\" support which prevents the HAL
> >+             from overriding the hardware vectors that it does not use,
> to
> >+             instead allow an installed ROM monitor to handle them. This
> >is
> >+             the most basic support which is likely to be common to most
> >+             implementations of ROM monitor.
> >+             \"GDB_stubs\" provides support when GDB stubs are included
> in
> >+             the ROM monitor or boot ROM."
> >+     }
> >====================================
> >and add the following to redboot_ROM.ecm,
> >========================
> >+cdl_option CYGSEM_HAL_USE_ROM_MONITOR {
> >+    inferred_value 0 0
> >+};
> >========================
> >maybe you should recompile the redboot[ROM], and ap[RAM]
> >then try again,good luck....^^
> >
> >
> >
> >Thanks RandyLin:
> >
> >here is my mlt_arm_snds_rom.ldi and mlt_arm_snds_ram.ldi which you want to
> >see:
> >
> >mlt_arm_snds_ram.ldi:
> >
> >#include <cyg/infra/cyg_type.inc>
> >
> >MEMORY
> >{
> >     ram : ORIGIN = 0x000000, LENGTH = 0x01000000
> >}
> >
> >SECTIONS
> >{
> >     SECTIONS_BEGIN
> >     SECTION_fixed_vectors (ram, 0x20, LMA_EQ_VMA)
> >     SECTION_rom_vectors (ram, 0x50000, 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
> >}
> >
> >and  mlt_arm_snds_rom.ldi:
> >
> >#include <cyg/infra/cyg_type.inc>
> >
> >MEMORY
> >{
> >     ram : ORIGIN = 0, LENGTH = 0x1000000
> >     rom : ORIGIN = 0x1800000, LENGTH = 0x80000
> >}
> >
> >SECTIONS
> >{
> >     SECTIONS_BEGIN
> >     SECTION_rom_vectors (rom, 0x1800000, LMA_EQ_VMA)
> >     SECTION_text (rom, ALIGN (0x1), LMA_EQ_VMA)
> >     SECTION_fini (rom, ALIGN (0x4), LMA_EQ_VMA)
> >     SECTION_rodata (rom, ALIGN (0x4), LMA_EQ_VMA)
> >     SECTION_rodata1 (rom, ALIGN (0x4), LMA_EQ_VMA)
> >     SECTION_fixup (rom, ALIGN (0x4), LMA_EQ_VMA)
> >     SECTION_gcc_except_table (rom, ALIGN (0x4), LMA_EQ_VMA)
> >     SECTION_fixed_vectors (ram, 0x20, LMA_EQ_VMA)
> >     SECTION_data (ram, 0x20000, FOLLOWING (.gcc_except_table))
> >     SECTION_bss (ram, ALIGN (0x4), LMA_EQ_VMA)
> >     CYG_LABEL_DEFN(__heap1) = ALIGN (0x8);
> >     SECTIONS_END
> >}
> >
> >I did as you said(Only modified ROM and RAM config as above ),and using
> GDB
> >
> >can load app and app works perfectly fine.But when loading app using
> >redboot
> >commands "load -m xmodem"("load -m tftp" is same),and using "go" to
> execute
> >
> >app,redboot still will display strange string as
> >
> >"$T0a0f:86000000;0d:80060200;#17$T0a0f:86000000;0d:80060200;
> >#17$T0a0f:86000000;0d:80060"
> >
> >Even if added the macro "CYGSEM_HAL_USE_ROM_MONITOR" in file
> >hal_arm_snds.cdl,the result were same.What is your detail steps in your
> >successful executing app under redboot commands?
> >
> >Thanks lot!
> >
> >zheng
> >
> >
> >
> >
> > >From: RandyLin@mxic.com.tw
> > >To: ecos-discuss@sources.redhat.com
> > >CC: wj_zheng10@hotmail.com
> > >Subject: [ECOS] How to handle it???
> > >Date: Wed, 3 Dec 2003 10:05:08 +0800
> > >
> > >
> > >Can you use "load -m ymodem" or "load -m xmodem" to load ap??
> > >I saw your mlt_arm_snds_rom.ldi and mlt_arm_snds_ram.ldi....it may be
> > >wrong...
> > >I assume your redboot is ROM mode, so  redboot's data section is at
> >0x20000
> > >when u use arm-elf-gdb to load ap(RAM mode), it overwrite the redboot's
> > >data section,
> > >because your mlt_arm_snds_ram.ldi locate the rom_vectors and following
> > >section to 0x20000
> > >so that's why u got the "Ignoring packet error,  continuing..",
> > >I modify the SECTION_rom_vectors (ram, 0x00050000, LMA_EQ_VMA) in
> > >mlt_arm_snds_ram.ldi
> > >"-r" option is for binary data, your ap is elf format, don't use "-r"
> > >can u post the whole mlt_arm_snds_rom.ldi?
> > >I don't know why you got the message "0x20000 which is not in RAM"
> > >wish this help.
> > >
> > >
> > >
> > >
> > >Thanks RandyLin:
> > >        Now my redboot can work,and I can use redboot command "load
> > >......-m
> > >
> > >tftp....."to download app to snds board.
> > >        Howerer, if not using -r option,the error as displayed "
> ***Abort!
> > >Attempt to load ELF data to address: 0x00020000 which is not in RAM".
> > >        If using  -r option,app looks like to be downloaded
> correctly,but
> > >the
> > >display is "Raw file loaded 0x00300000-0x003c6116, assumed entry at
> > >0x00300000",and then if  using redboot command "go 0x00300000" to
> execute
> > >the app,the redboot will display some strange strings as
> > >"
> > >$T0a0f:86000000;0d:80060200;#17$T0a0f:86000000;0d:80060200;
> > >#17$T0a0f:8600"on
> > >console.
> > >
> > >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!
> > >
> > >_________________________________________________________________
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> > >
> > >--
> > >Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> > >and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> > >
> > >
> > >
> > >
> > >
> > >
> hi,RandyLin:
> I don't know if you had done some other steps or made some other
> modification,but I did as what you had said,it seems no use.why?
> 
> Thanks lot!
> 
> zheng
> 
> > >
> > >--
> > >Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> > >and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> > >
> >
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> >
> >
> >
> >
> >
> 
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> 
> --
> Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> 
-- 
Gary Thomas <gary@mlbassoc.com>
MLB Associates


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