Hello, Dear all:
In fact, as in my test result, the codezero source code which from Git
repository & the download page that cannot work,
even the ARMv5's code. With the Git version and follow the http://www.
l4dev.org/build_from_scratch document, We can
produced a "final.elf" for PB926-Versatile Platform & ARM926EJ-S processor with
an "empty" or "hello_world" baremetal
project, but when you run the final image with qemu & gdb debugger, and after
the following messages:
ELF Loader: Loader image size: 557KB, placed at physical 0xe00000 - 0xe8b6b8
Loading the kernel...
Entry point: 0x8000
Copying to range from 0x8000 to 0x1fdf8 of size: 0x17df8
Clearing memory... starting from 1fdf8, size: 0
Copying to range from 0x20000 to 0x2d000 of size: 0xd000
Clearing memory... starting from 2d000, size: 61c8
Copying to range from 0x34000 to 0x38390 of size: 0x4390
Clearing memory... starting from 38390, size: 0
Loading containers...
Loading section .cont.0 from top-level elf file.
Loading .img.0 section image...
Entry point: 0xa0000000
Copying to range from 0x10295c to 0x10297c of size: 0x20
Clearing memory... starting from 10297c, size: 0
Copying to range from 0x100000 to 0x10297c of size: 0x297c
Clearing memory... starting from 10297c, size: 0
Copying to range from 0x103000 to 0x1030b4 of size: 0xb4
Clearing memory... starting from 1030b4, size: 104c
Total of 1 images in this container.
Total of 1 container images.
elf-loader: kernel entry point is 0x8000
elf-loader: Starting kernel
code0: start kernel...
code0: Init kernel mappings...
code0: Virtual memory enabled.
code0: Kernel area 0xf0008000 - 0xf0039000 remapped as 49 pages
code0: Kernel built on May 10 2012, 15:44:05
code0: Mapping 0x3000 bytes as RX from 0x100000 physical to 0xa0000000 virtual
for hello_world0
code0: Mapping 0x2000 bytes as RW from 0x103000 physical to 0xa0003000 virtual
for hello_world0
you will see the message as following( when you using "c" or "n" command in gdb
after the init_finalize() ):
Pager (1) faulted on itself. FSR: 0x1f, FAR: 0xa00040ec, PC: 0xa0001d2c pte:
0x104ffe CPU0 Exiting.
this message seems is come from file src/arch/arm/exception-common.c, function
fault_ipc_to_pager(), line 121,
I don't know if this is a bug or not, because in my mind, the correct message
should be come from file
conts/baremetal/hello_world/hello,c, function print_hello_world(), line 10,
which as following:
cont0: Hello world from hello_world0!
but my test result always failed after init_finalize(). So, that means I do
not believe that someone said that
their demos which also come from the codezero's Git repository can working. Am
I wrong?
By the way, especially for Amit and B-labs R&D team, I found a small bug in
file print-early.c(all of the platform),
function printhex8, line 51 & line 54(this line numbers means in the pb926
platform version, for realview platform's
version is line 58 & 61, beagle's version is line 50 & 53), the correct code
should like this:
51 *temp = '\0';
52
53 if ( !val ) {
54 *(--temp) = '0';
Am I right?
Regards,
Charles, Liu
----- Original Message -----
From: "Amit Mahajan" <amit.maha...@b-labs.com>
To: "Jenkins, Christipher Derell" <cdj...@sandia.gov>
Cc: <codezero-devel@lists.l4dev.org>
Sent: Thursday, May 10, 2012 5:59 AM
Subject: Re: [codezero-devel] [EXTERNAL] Re: Codezero for PandaBoard bootloader
question
> On Wed, 2012-05-09 at 21:52 +0000, Jenkins, Christipher Derell wrote:
>> Hello Amit.
>>
>> I'm new to C0 development. I pulled codezero from the Git repository and
>> have the helloworld, mutex, and threading demos working. However, they only
>> work for ARMv5. Also, looking at 'git log' I notice no commits have happened
>> since June 2010. Is the development of codezero still progressing?
>
> Hi Chris,
>
> Yes we are actively working on Codezero and Virtualization. We have not
> released ARM-V7 sources publicly yet. Instead we have release toolkits
> for v7 based platforms like VX and panda board.
>
> Check l4dev.org for the toolkit downloads.
>
>
> --
> Thanks,
> Amit Mahajan
>
>
> _______________________________________________
> codezero-devel mailing list
> codezero-devel@lists.l4dev.org
> http://lists.l4dev.org/mailman/listinfo/codezero-devel_lists.l4dev.org
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