At91rm9200 Drivers

Up: AT91xx and Linux Kernels For ARMs With MMU

The At91rm9200 is a ARM920T with additional integrated peripherals.

At91rm9200

• not supported by linux 2.6.12 from kernel.org
• supported by linux 2.6.12 with patches from http://maxim.org.za/AT91RM9200/2.6/
• already supported by ecos from eCosCentric (http://www.ecoscentric.com/ecos/ecospro.shtml, >= 2500 GBP)
  • http://sourceware.org/ml/ecos-discuss/2005-02/msg00150.html
• The latest ecos release on http://ecos.sourceware.org/ does not yet support the at91rm9200. But there is currently some development to change this. For details about porting status see ecos At91rm9200.

MTD:

• linux 2.6:
  • http://spinics.net/lists/arm/msg09706.html
  • ftp://ftp.uk.linux.org/pub/people/dwmw2/mtd/cvs/

eth:

• linux 2.6 (.22): [linux/drivers/net/arm ] / [at91_ether.c]
• rtnet (first in 0.9.10): [rt_at91_ether.c] [rt_at91_ether.h]
• freebsd: [freebsd/src/sys/arm/at91] / [if_ate.c]
• atmel (no os): [AT91RM9200-BasicEMAC-ARM1_2-2_0.zip (2004-03-26)] ([found here])
• related: ecos at91sam7x [if_at91.c]

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specific Linux Kernel patches for at91rm9200: (see also Linux Kernels For ARMs With MMU)

There are hardware-specific patches that have not yet been integrated to the kernels from arm.linux.org.uk :

• kernel 2.4 (patch against 2.4.27-vrs1 from arm.linux.org.uk):

http://maxim.org.za/AT91RM9200/

(2.4.27vrs1-at91-17032005.patch.gz and other drivers, like MMC)

• kernel 2.6 (patch against 2.6.12 from kernel.org):

http://maxim.org.za/AT91RM9200/2.6/

(vanilla 2.6.12 does not yet know the at91rm9200)

• see also [AT91 FAQ]: [Linux ressources]
• see also [Linux Kernel from AT91 CDROM] (NOT identical to the kernel from arm.linux.org.uk)
• adeos + xenomai support: available [1] [2] [3]
• rtai support: work-in-progress [1] [2 (related)]

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Further code for at91rm9200 can be found:

• in the AT91 Library ?
  • On the [Atmel GNU CD (113MB ZIP)] from the [AT91 CDROM] in tools/at91.tar.gz .
  • On at91.com: [PDF] [full] [light] (V2.14)
• in [AT91 Application Notes] or the very similar [ATMEL AT91 Application Notes]