ChibiOS Free Embedded RTOS

Hello,

I'm submitting a couple patches to get more features out of the G0.

First is to fix CRC defines (they all have CRC)
Second is to add a weak IRQ handler definition for USB-C PD.

For the second patch, the implementation is minimal (we don't have UCPD in stm32_registry.h) but it should work ...

yes, a stub void __eabi() {}; does the job as well

I've updated the script to use newer versions where possible, so far so good but I have no hardware to test it.

okay, so copying these 2 eabivle-c*.S files and compiling them with the demo works.

They are also compiled with GCC and placed in lib/gcc/powerpc-eabivle/4.9.4/ecrt*.o
I'm trying to figure out why they are ignored...

One option would be to add them to libgcc.a
Another would be to explicitly link ...

it seems like creating an __eabi() or __init() stub works

Giving this a try...

--- extracted/gcc-4.9.4/libgcc/config/rs6000/t-e200.bkp 2021-09-26 23:45:07.848720330 +0200
+++ extracted/gcc-4.9.4/libgcc/config/rs6000/t-e200 2021-09-26 23:45:17.532808552 ...

here is an example linker + startup file from S32DS but I don't see this __init function


/* Entry Point */
ENTRY(_start)

/* define heap and stack size */
__HEAP_SIZE = 0 ;
__STACK_SIZE = 4096 ;

SRAM_SIZE = 128K;
/* Define SRAM Base Address */
SRAM_BASE_ADDR = 0x40000000;

MEMORY
{

flash ...

I've just updated the script with GDB

I'm having the same linker issue, it's caused by one of the vle patches I think:
https://github.com/fpoussin/gcc-powerpc ... tch#L10769
https://github.com/fpoussin/gcc-powerpc ... tch#L10858

I suspect S32DS to have these aliases defined somewhere

I've made a script to build the toolchain with their patches

https://github.com/fpoussin/gcc-powerpc-eabivle

yes, it's bundled with S32DS Linux

It seems like the latest release broke compatibility.
I'm using freescale's ppc vle gcc (4.9.4)


../../../os/rt/src/chinstances.c: In function 'chInstanceObjectInit':
../../../os/rt/src/chinstances.c:109:3: error: too ...

FYI https://github.com/4ms/stm32mp1-baremetal