leon3 broken for hello

[Joel Sherrill]

OK.. On tsim-leon3, the BSP fails to find the GP_TIMER as best I
can tell:

(gdb) bt
#0  _Internal_error_Occurred (
    the_source=the_source at entry=RTEMS_FATAL_SOURCE_BSP,
    is_internal=is_internal at entry=false, the_error=the_error at entry=512)
    at ../../../../../../rtems/c/src/../../cpukit/score/src/interr.c:36
#1  0x400076f4 in rtems_fatal (source=source at entry=RTEMS_FATAL_SOURCE_BSP,
    error=error at entry=512)
    at ../../../../../../rtems/c/src/../../cpukit/sapi/src/fatal2.c:34
#2  0x400018a8 in bsp_fatal (code=LEON3_FATAL_CPU_COUNTER_INIT)
    at ../../../../../.././leon3/lib/include/bsp/fatal.h:108
#3  leon3_cpu_counter_initialize ()
    at
../../../../../../../../rtems/c/src/lib/libbsp/sparc/leon3/startup/cpucounter.c:41

Tsim is documented to include a GPTIMER unit with two timers. I have no idea
why this is failing now since it should be there.

cc'ing Daniel so he can provide some feedback.

--joel


On 2/19/2014 3:24 AM, Sebastian Huber wrote:
> On 2014-02-19 08:48, Sebastian Huber wrote:
>> Hello Joel,
>>
>> since you don't provide much information (e.g. at least a stack trace would
>>  have been helpful) I can only guess.  You probably configured only one
>> GPTIMER instance in the simulators.  Since the LEON processors lacks a
>> free-running CPU counter I had to use a second GPTIMER instance for this.
>>
>> You should end up in _Internal_error_Occurred() with the_source ==
>> RTEMS_FATAL_SOURCE_BSP_SPECIFIC.  Now you can look at the <bsp.h> of the
>> LEON3 BSP and find this:
>>
>> typedef enum { LEON3_FATAL_CPU_COUNTER_INIT } leon3_fatal_code;
>>
>> If you search for LEON3_FATAL_CPU_COUNTER_INIT you will find this:
>>
>> adev = (void *) ambapp_for_each( &ambapp_plb, OPTIONS_ALL |
>> OPTIONS_APB_SLVS, VENDOR_GAISLER, GAISLER_GPTIMER, ambapp_find_by_idx, &idx
>> ); if (adev == NULL) { rtems_fatal(RTEMS_FATAL_SOURCE_BSP_SPECIFIC,
>> LEON3_FATAL_CPU_COUNTER_INIT); }
> With this change
>
> http://git.rtems.org/rtems/commit/?id=33cb8bf64d7b7551ea3a2e7ced5d4b56cd32d6db
>
> it is now easier to figure out what cased a BSP specific fatal error:
>
> Breakpoint 2, _Internal_error_Occurred (the_source=RTEMS_FATAL_SOURCE_BSP, 
> is_internal=false, the_error=512) at 
> ../../../../../../rtems/c/src/../../cpukit/score/src/interr.c:36
> 36      {
> (gdb) where
> #0  _Internal_error_Occurred (the_source=RTEMS_FATAL_SOURCE_BSP, 
> is_internal=false, the_error=512) at 
> ../../../../../../rtems/c/src/../../cpukit/score/src/interr.c:36
> #1  0x4000239c in leon3_cpu_counter_initialize () at 
> ../../../../../.././leon3/lib/include/bsp/fatal.h:108
> #2  0x40001c80 in bsp_start () at 
> ../../../../../../../../rtems/c/src/lib/libbsp/sparc/leon3/startup/bspstart.c:72
> #3  0x40001b34 in boot_card (cmdline=0x0) at 
> ../../../../../../../../rtems/c/src/lib/libbsp/sparc/leon3/../../shared/bootcard.c:82
> #4  0x400010c8 in zerobss () at 
> ../../../../../../../../rtems/c/src/lib/libbsp/sparc/leon3/../../sparc/shared/start/start.S:362
> #5  0x400010c8 in zerobss () at 
> ../../../../../../../../rtems/c/src/lib/libbsp/sparc/leon3/../../sparc/shared/start/start.S:362
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) p (bsp_fatal_code) the_error
> $4 = LEON3_FATAL_CPU_COUNTER_INIT
> (gdb)
>

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
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