Re: [PATCH V4 1/4] ARM: Xilinx: Adding Xilinx board support

[Jamie Iles]

Hi John,

A couple of very pedantic nitpicks below, sorry I didn't spot them 
before!

On Fri, Feb 18, 2011 at 11:14:38AM -0700, John Linn wrote:
> The 1st board support is minimal to get a system up and running
> on the Xilinx platform.
> 
> Signed-off-by: John Linn <john.linn@xxxxxxxxxx>
> ---
> 
> V4 Changes
> 	Minor cleanup based on input from Jamie Iles.
> 
> V3 Changes
> 
> Updates based on Russell Kings' comments
> 	Changed headers to update the license info and remove
> 	the address
> 
> 	Changed the name of functions to include "xilinx" in 
> 	common.c and common.h
> 
> Changed the Kconfig and Makefile to use MACH_XILINX which
> matches the machine registered.
> 
> V2 Changes
> 
> Updates based on Russell King's comments	
> 	minor cleanups
> 	cleaned up physical/virtual addresses in early i/o table		
> 
>  arch/arm/mach-xilinx/Kconfig       |   14 +++++
>  arch/arm/mach-xilinx/Makefile      |    7 ++
>  arch/arm/mach-xilinx/Makefile.boot |    3 +
>  arch/arm/mach-xilinx/board_ep107.c |   82 ++++++++++++++++++++++++++
>  arch/arm/mach-xilinx/common.c      |  113 ++++++++++++++++++++++++++++++++++++
>  arch/arm/mach-xilinx/common.h      |   30 ++++++++++
>  6 files changed, 249 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/mach-xilinx/Kconfig
>  create mode 100644 arch/arm/mach-xilinx/Makefile
>  create mode 100644 arch/arm/mach-xilinx/Makefile.boot
>  create mode 100644 arch/arm/mach-xilinx/board_ep107.c
>  create mode 100644 arch/arm/mach-xilinx/common.c
>  create mode 100644 arch/arm/mach-xilinx/common.h
> 
> diff --git a/arch/arm/mach-xilinx/Kconfig b/arch/arm/mach-xilinx/Kconfig
> new file mode 100644
> index 0000000..61532af
> --- /dev/null
> +++ b/arch/arm/mach-xilinx/Kconfig
> @@ -0,0 +1,14 @@
> +if ARCH_XILINX
> +
> +choice
> +        prompt "Board Selection"
> +	default MACH_XILINX
> +
> +config MACH_XILINX
> +	bool "Xilinx EP107 Board"
> +	help
> +	  Select if you are using a Xilinx EP107 board.
> +
> +endchoice
> +
> +endif
> diff --git a/arch/arm/mach-xilinx/Makefile b/arch/arm/mach-xilinx/Makefile
> new file mode 100644
> index 0000000..76e9e55
> --- /dev/null
> +++ b/arch/arm/mach-xilinx/Makefile
> @@ -0,0 +1,7 @@
> +#
> +# Makefile for the linux kernel.
> +#
> +
> +# Common support
> +obj-y 				:= common.o
> +obj-$(CONFIG_MACH_XILINX)	+= board_ep107.o
> diff --git a/arch/arm/mach-xilinx/Makefile.boot b/arch/arm/mach-xilinx/Makefile.boot
> new file mode 100644
> index 0000000..67039c3
> --- /dev/null
> +++ b/arch/arm/mach-xilinx/Makefile.boot
> @@ -0,0 +1,3 @@
> +   zreladdr-y	:= 0x00008000
> +params_phys-y	:= 0x00000100
> +initrd_phys-y	:= 0x00800000
> diff --git a/arch/arm/mach-xilinx/board_ep107.c b/arch/arm/mach-xilinx/board_ep107.c
> new file mode 100644
> index 0000000..a1635b5
> --- /dev/null
> +++ b/arch/arm/mach-xilinx/board_ep107.c
> @@ -0,0 +1,82 @@
> +/* arch/arm/mach-xilinx/board_ep107.c
> + *
> + * This file contains code specific to the Xilinx EP107 board.
> + *
> + *  Copyright (C) 2011 Xilinx
> + *
> + * based on /arch/arm/mach-realview/core.c
> + *
> + *  Copyright (C) 1999 - 2003 ARM Limited
> + *  Copyright (C) 2000 Deep Blue Solutions Ltd
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/platform_device.h>
> +#include <asm/mach-types.h>
> +#include <asm/mach/arch.h>
> +#include <mach/xilinx_soc.h>
> +#include <mach/irqs.h>
> +#include <linux/clkdev.h>
> +#include "common.h"

Usual convention is to order these as the linux, then the asm, then the 
mach includes.

> +
> +/*
> + * Fixed clocks for now
> + */
> +
> +static struct clk ref50_clk = {
> +	.rate	= 50000000,
> +};
> +
> +/* Create all the platform devices for the board */
> +
> +static struct resource uart0[] = {
> +	{
> +		.start = UART0_PHYS,
> +		.end = UART0_PHYS + 0xFFF,
> +		.flags = IORESOURCE_MEM,
> +	}, {
> +		.start = IRQ_UART0,
> +		.end = IRQ_UART0,
> +		.flags = IORESOURCE_IRQ,
> +	},
> +};
> +
> +static struct platform_device uart_device0 = {
> +	.name = "xuartpss",
> +	.id = 0,
> +	.dev = {
> +		.platform_data = &ref50_clk.rate,
> +	},
> +	.resource = uart0,
> +	.num_resources = ARRAY_SIZE(uart0),
> +};
> +
> +static struct platform_device *xilinx_pdevices[] __initdata = {
> +	&uart_device0,
> +};
> +
> +/**
> + * board_ep107_init - Board specific initialization for the Xilinx EP107 board.
> + *
> + **/
> +static void __init board_ep107_init(void)
> +{
> +	xilinx_system_init();
> +	platform_add_devices(&xilinx_pdevices[0], ARRAY_SIZE(xilinx_pdevices));
> +}
> +
> +MACHINE_START(XILINX_EP107, "Xilinx EP107")
> +	.boot_params    = PHYS_OFFSET + 0x00000100,

Should this use PLAT_PHYS_OFFSET?

Jamie
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