RTEMS/i.MX7D u-boot configuration.

[JunBeom Kim (EmbedCoreTech)]

Dear Huber,

I think that you have focused RTEMS version for i.MX7D board until now.

i.MX6Q SDP board is arrived. and, I am doing porting work about RTEMS for i.MX6Q SDP board with u-boot.

After internal work is completed, I will open my RTEMS porting version for i.MX6Q.

At this time, I did boot RTEMS in u-boot console according to below step in my case.

- fatload mmc 1 0x18000000 imx6q-sabresd.dtb
- fatload mmc 1 0x10100000 rtems.bin
- go 0x10100000

On referencing, I am not expert regarding u-boot configuration for booting RTEMS.

Because I don't know how to transfer DTB block address(0x18000000) in u-boot, I modified start.S tentatively as like below;

#ifdef BSP_START_COPY_FDT_FROM_U_BOOT
#ifdef RTEMS_SMP
	cmp	r7, #0
	bne	1f
#endif
//	mov	r0, r6
	mov	r0, #(0x18000000)
	bl	bsp_fdt_copy
1:
#endif

If possible, please let me know how to transfer DTB block address in u-boot on your i.MX7D board.

On referencing, current progress is below;
1) RTEMS kernel for single core : completed.
2) FAT file system for SD card : completed.
3) RTEMS kernel for Quad multi-core : on-going.
    - There is possibility for failing SMP port.
    - Maybe, I need some helps from RTEMS users.
4) RTEMS libbsd for Network : on going.

If #4(libbsd for Network) is ported, I will process to open my RTEMS version.

Best Regards,
JunBeom Kim
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Phone: +82-31-396-5584
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~~~~~~~~~~~~~~~~~~~~~~

-----Original Message-----
From: Sebastian Huber <sebastian.huber at embedded-brains.de> 
Sent: Wednesday, September 27, 2017 6:16 PM
To: JunBeom Kim (Coressent Kr.) <jbkim at coressentkorea.co.kr>; users at rtems.org
Subject: Re: Coressent Korea - Freescale i.MX6 RTEMS/Qt SDK Release Information.

On 27/09/17 08:38, JunBeom Kim (Coressent Kr.) wrote:

> I am still working for porting i.MX6Q FEC driver after I added FreeBSD's i.MX6 FEC driver code on rtems-libbsd.

I added the i.MX 7Dual network interface driver to libbsd today. There are some performance issues:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222634

--
Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
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Fax     : +49 89 189 47 41-09
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