On Feb 14, 2014, at 02:52 , Sebastian Huber
<[email protected]> wrote:
> Hello Peter,
>
> On 2014-02-13 23:11, Peter Dufault wrote:
>> I'm testing the phycore_mpc5554 against the latest head, not too
>> successfully.
>
> which issues do you have?
I wanted to get more details before posting. The first thing I noticed is that
either rtems_clock_set() or rtems_clock_get() isn't working properly (and isn't
returning an error), so e.g. Task_1_through_3() in sp01 exits immediately
because it sees that more than 35 seconds has gone by and exits. The fact that
exit() now calls bsp_reset() had me confused for a while, I thought things were
really in bad shape until I realized that (and I checked, that detail is in the
release notes). I recompiled without optimization last night so that this AM I
can figure out more.
>
>> One hopefully easy problem is that with tests enabled I get this problem
>> building file system tests, including fsdosfsname01:
>>
>> linkcmds.base:329 cannot move location counter backwards (from 4002c564 to
>> 40010000)
>>
>> There's a thread about this last November ("Powerpc/mpc55xxevb build
>> failure") with the suggestion that this be conditional on BSP_SMALL_MEMORY.
>> I don't consider 8MB of memory small, but I'm showing my age, the younger
>> people are spitting out their lattes at that.
>
> I think the problem is the flash size. How big is it?
I'm using the internal flash so it's 2M:
/*
* Debug RAM is the top 4MB of external RAM and is swapped with the
* FLASH for development.
*/
MEMORY {
ROM : ORIGIN = 0x00000000, LENGTH = 2M
RAM : ORIGIN = 0x40000000, LENGTH = 64K
RAM_EXT : ORIGIN = 0x21000000, LENGTH = 4M
DEBUG_RAM : ORIGIN = 0x21400000, LENGTH = 4M
NOCACHE : ORIGIN = 0x0, LENGTH = 0
}
Since I'm running out of RAM at this point I think I could easily increase it
to 4M for testing since I use that DEBUG_RAM section to image the flash, I need
to check the MPC555X memory map but I think I could lie and just set the ROM
size to 4M and then download into RAM and set up the TLB.
There is 8M external FLASH on the Phytec but I haven't been using that. My
normal in-the-field use is 2M flash 4M SRAM, my programs have been running
around 1.1M FLASH so it has been OK.
Peter
-----------------
Peter Dufault
HD Associates, Inc. Software and System Engineering
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