[U-Boot-Users] SoC Drivers: Where do they go?

[U-Boot-Users] SoC Drivers: Where do they go?

[McMullan, Jason]

I'm writing the drivers for a MIPS 4KEc based SoC, and was wondering
where they should go in the source code tree. 

Having done ARM in the past, my first guess would be (calling the SoC
'qux', made by company 'foo', and a 'bar' eval board for now):

  cpu/mips/qux
	spi.c
	nand.c
	ether.c

And register header files go in:

  include/asm-mips/arch-qux
			ddr.h
			spi.h
			nand.h
			ether.h

And the board-specific stuff (like DDR configs, PHY addresses, etc)
would go in:

  board/foo/bar
	config.mk
	ether.c
	ddr.c
	...

I only ask, because there is no SoC directories under 'cpu/mips', nor
any SoC directories under 'include/asm-mips'


Jason McMullan
MTS SW
System Firmware

NetApp
724.741.5011    Fax
724.741.5166    Direct
412.656.3519    Mobile
jason.mcmullan at netapp.com
www.netapp.com



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[U-Boot-Users] SoC Drivers: Where do they go?

[Ben Warren]

Hi Jason,

McMullan, Jason wrote:
> I'm writing the drivers for a MIPS 4KEc based SoC, and was wondering
> where they should go in the source code tree. 
>
> Having done ARM in the past, my first guess would be (calling the SoC
> 'qux', made by company 'foo', and a 'bar' eval board for now):
>
>   cpu/mips/qux
> 	spi.c
> 	nand.c
> 	ether.c
>
>   
It's definitely preferable to put drivers in the 'drivers' directory 
than tied to the CPU.  You'll see subdirectories for spi, mtd/nand and net.
> And register header files go in:
>
>   include/asm-mips/arch-qux
> 			ddr.h
> 			spi.h
> 			nand.h
> 			ether.h
>
>   
Network driver headers typically go with the C code (drivers/net).  I'll 
let other people chime in about the other peripherals, because I'm not 
clear on the preferred approach.
> And the board-specific stuff (like DDR configs, PHY addresses, etc)
> would go in:
>
>   board/foo/bar
> 	config.mk
> 	ether.c
> 	ddr.c
> 	...
>
>   
In general this is correct, although a lot of board-specific stuff is 
#defined in config files.
> I only ask, because there is no SoC directories under 'cpu/mips', nor
> any SoC directories under 'include/asm-mips'
>
>
> Jason McMullan
> MTS SW
> System Firmware
>
> NetApp
> 724.741.5011    Fax
> 724.741.5166    Direct
> 412.656.3519    Mobile
> jason.mcmullan at netapp.com
> www.netapp.com
>
>   
regards,
Ben