Re: [ECOS] redboot on STM3240G-EVAL board

[Oleg Uzenkov <o.uzenkov@unicore.co.ua>]

Thanks Sergei!

I can confirm that loading and running .bin files works now ))

For someone with the same problem here is a piece of information:

1. From objdump command below  we see that .rom_vectors section address 
is 0x64008000 and .text section starts at 0x64008110.

arm-none-eabi-objdump -h app.elf | grep LOAD -B1

   0 .rom_vectors  00000008  64008000  64008000  00000098  2**0
                   CONTENTS, ALLOC, LOAD, READONLY, CODE
   1 .ARM.extab    0000003c  64008008  64008008  000000a0  2**2
                   CONTENTS, ALLOC, LOAD, READONLY, DATA
   2 .ARM.exidx    000000c8  64008048  64008048  000000e0  2**2
                   CONTENTS, ALLOC, LOAD, READONLY, DATA
   3 .text         0000595c  64008110  64008110  000001a8  2**3
                   CONTENTS, ALLOC, LOAD, READONLY, CODE
   4 .rodata       00000204  6400da70  6400da70  00005b08  2**2
                   CONTENTS, ALLOC, LOAD, READONLY, DATA
--
   6 .data         000002a8  6400dc80  6400dc80  00005d10  2**3
                   CONTENTS, ALLOC, LOAD, DATA

2. Check Entry point address with readelf command. In my case Entry 
point address:  0x64008111

arm-none-eabi-readelf -h app.elf
ELF Header:
   Magic:   7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
   Class:                             ELF32
   Data:                              2's complement, little endian
   Version:                           1 (current)
   OS/ABI:                            UNIX - System V
   ABI Version:                       0
   Type:                              EXEC (Executable file)
   Machine:                           ARM
   Version:                           0x1
   Entry point address:               0x64008111
   Start of program headers:          52 (bytes into file)
   Start of section headers:          24700 (bytes into file)
   Flags:                             0x5000002, has entry point, 
Version5 EABI
   Size of this header:               52 (bytes)
   Size of program headers:           32 (bytes)
   Number of program headers:         3
   Size of section headers:           40 (bytes)
   Number of section headers:         12
   Section header string table index: 11

3. Now load .bin

RedBoot> load -m x -r -b 0x64008000
CRaw file loaded 0x64008000-0x6400df27, assumed entry at 0x64008000
xyzModem - CRC mode, 191(SOH)/0(STX)/0(CAN) packets, 5 retries
RedBoot>

4. Now run binary with:
RedBoot> go 0x64008111


Oleg



> On Wed, 15 Oct 2014, Oleg Uzenkov wrote:
>
>>> For binaries you have to know the first LMA address (rom_vectors
>>> address) to specify that address on a command line.
>>>
>>> For binary image
>>>
>>>     load -m x -r -b <LMA>
>>>     fis create -b <LMA> <name>
>> Please, let me know what do you think of this:
>>
>> 1) I have built app.elf and app.bin for *RAM* startup
>> (SECTION_rom_vectors: LMA == 0x64008000 ) (memory layout is
>> mlt_cortexm_stm32x0g_eval_ram.ldi)
>>
>> 2) I can successfuly run app.elf under redboot (i.e. >load -m x; >go)
>>
>> 3) When I load app.bin like this:
>>> load -m x -r -b 0x64008000
>>> go 0x64008000
>> or
>>> go
> RedBoot 'load' command does stat info about 'Entry point'. For example
> on my ARM target
>
>    RedBoot> load -m y
>    Entry point: 0x81008040, address range: 0x81008000-0x81013890
>    xyzModem - CRC mode, 627(SOH)/0(STX)/0(CAN) packets, 2 retries
>    RedBoot>
>
> Load address 0x81008000 and entry point (LMA of .text) is 0x81008040.
>
> If I load a binary, I got something likes this
>
>    RedBoot> load -m y -r -b 0x81008000
>    CRaw file loaded 0x81008000-0x8101388f, assumed entry at 0x81008000
>    xyzModem - CRC mode, 372(SOH)/0(STX)/0(CAN) packets, 3 retries
>    RedBoot>
>
> RedBoot has no clue where start from (it can guess only, 'assumed
> entry')
>
>  From your old message
>
>    http://ecos.sourceware.org/ml/ecos-discuss/2014-10/msg00007.html
>
> I see that after loading PC register will be set to 0x64008110, so try
>
>    RedBoot> go 0x64008110
>
>> I get rubbish ($T080f:00800064;0d:e8cf1b64;)
> Connect GDB to get it.
>
>> (i also tried to create fis and load and run image from fis, same
>> result, i.e.
>>> fis create -b 0x64008000 app; >fis load app; >go)
>> any ideas where I am wrong?
> See/try above.
>
>> Did anyone manage to execute .bin file from Redboot?
> It should work.
>
> HTH
>
> Sergei
>


-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss