[PATCH 05/13] ARM: LPC32XX: arch Kconfig, plat Kconfig, and makefiles

Wed Feb 3 05:51:52 EST 2010

Hi Kevin,

On Wed, Jan 27, 2010 at 05:43:23PM -0800, wellsk40 at gmail.com wrote:
> From: Kevin Wells <wellsk40 at gmail.com>
> 
> Added Kconfig for the LPC32XX arch, Kconfig.plat for platforms based
> on the LPC32XX, and the initial makefiles. Kconfig.plat currently
> supports the Phytec PHY3250 platform.
> 
> Signed-off-by: Kevin Wells <wellsk40 at gmail.com>
> ---
>  arch/arm/mach-lpc32xx/Kconfig       |  158 +++++++++++++++++++++++++++++++++++
>  arch/arm/mach-lpc32xx/Kconfig.plat  |   98 ++++++++++++++++++++++
>  arch/arm/mach-lpc32xx/Makefile      |    9 ++
>  arch/arm/mach-lpc32xx/Makefile.boot |    4 +
>  4 files changed, 269 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/mach-lpc32xx/Kconfig b/arch/arm/mach-lpc32xx/Kconfig
> new file mode 100644
> index 0000000..a277885
> --- /dev/null
> +++ b/arch/arm/mach-lpc32xx/Kconfig
> @@ -0,0 +1,158 @@
> +if ARCH_LPC32XX
> +
> +menu "LPC32XX chip options"
> +
> +config ARCH_LPC32XX_IRAM_SIZE
> +	int
> +	default 131072 if ARCH_LPC32XX_20
> +	default 262144 if ARCH_LPC32XX_30 || ARCH_LPC32XX_40 || ARCH_LPC32XX_50
> +
> +choice
> +    prompt "Select 32x0 device variation"
> +    default ARCH_LPC32XX_50
> +
> +	config ARCH_LPC32XX_20
> +		bool "LPC3220"
> +		help
> +		 128K IRAM, no ethernet or LCD
> +
> +	config ARCH_LPC32XX_30
> +		bool "LPC3230"
> +		help
> +		 256K IRAM and LCD, no ethernet
> +
> +	config ARCH_LPC32XX_40
> +		bool "LPC3240"
> +		help
> +		 256K IRAM and ethernet, no LCD
> +
> +	config ARCH_LPC32XX_50
> +		bool "LPC3250"
> +		help
> +		 256K IRAM and ethernet and LCD
> +
> +endchoice
It's sad this is a choice and only a single "device variation" is
selectable.  Maybe you can autodetect these?

> +menu "Serial port configuration"
> +
> +menu "Individual UART enable selections"
> +
> +config ARCH_LPC32XX_HSUART1_ENABLE
> +	bool "Enable high speed UART1"
> +	help
> +	 Also enable LPC32xx high speed serial support in drivers/serial
> +
> +config ARCH_LPC32XX_HSUART2_ENABLE
> +	bool "Enable high speed UART2"
> +	help
> +	 Also enable LPC32xx high speed serial support in drivers/serial
> +
> +config ARCH_LPC32XX_UART3_ENABLE
> +	bool "Enable standard UART3"
> +	help
> +	 Also enable 8250 serial support in drivers/serial
> +
> +config ARCH_LPC32XX_UART4_ENABLE
> +	bool "Enable standard UART4"
> +	help
> +	 Also enable 8250 serial support in drivers/serial
> +
> +config ARCH_LPC32XX_UART5_ENABLE
> +	bool "Enable standard UART5"
> +	default y
> +	help
> +	 Also enable 8250 serial support in drivers/serial
> +
> +config ARCH_LPC32XX_UART6_ENABLE
> +	bool "Enable standard UART6"
> +	help
> +	 Also enable 8250 serial support in drivers/serial
> +
> +config ARCH_LPC32XX_HSUART7_ENABLE
> +	bool "Enable high speed UART7"
> +	help
> +	 Also enable LPC32xx high speed serial support in drivers/serial
> +
> +endmenu
IMHO "enable" is a bit misleading here.  Depending on the selection here
the devices are defined or not.

> +config ARCH_LPC32XX_UART6_IRDAMODE
> +	bool "Use IRDA mode on UART6"
> +	depends on ARCH_LPC32XX_UART6_ENABLE
> +	help
> +		Enables the IrDA modulator for UART6
> +
> +choice
> +	prompt "Kernel uncompress status output UART selection"
> +	default ARCH_LPC32XX_UNCOMP_U5
> +
> +	config ARCH_LPC32XX_UNCOMP_HSU1
> +		bool "High speed UART 1"
> +		help
> +		 Kernel uncompress output is on high speed UART 1
> +
> +	config ARCH_LPC32XX_UNCOMP_HSU2
> +		bool "High speed UART 2"
> +		help
> +		 Kernel uncompress output is on high speed UART 2
> +
> +	config ARCH_LPC32XX_UNCOMP_U3
> +		bool "Standard UART 3"
> +		help
> +		 Kernel uncompress output is on standard UART 3
> +
> +	config ARCH_LPC32XX_UNCOMP_U4
> +		bool "Standard UART 4"
> +		help
> +		 Kernel uncompress output is on standard UART 4
> +
> +	config ARCH_LPC32XX_UNCOMP_U5
> +		bool "Standard UART 5"
> +		help
> +		 Kernel uncompress output is on standard UART 5
> +
> +	config ARCH_LPC32XX_UNCOMP_U6
> +		bool "Standard UART 6"
> +		help
> +		 Kernel uncompress output is on standard UART 6
> +
> +	config ARCH_LPC32XX_UNCOMP_HSU7
> +		bool "High speed UART 7"
> +		help
> +		 Kernel uncompress output is on high speed UART 7
> +
> +endchoice
Can you autodetect this?

> +choice
> +	prompt "debug output (printascii) UART selection"
> +	default ARCH_LPC32XX_DEBUGO_U5
> +
> +	config ARCH_LPC32XX_DEBUGO_U3
> +		bool "Standard UART 3"
> +		help
> +		 printascii messages are output on standard UART 3
> +
> +	config ARCH_LPC32XX_DEBUGO_U4
> +		bool "Standard UART 4"
> +		help
> +		 printascii messages are output on standard UART 4
> +
> +	config ARCH_LPC32XX_DEBUGO_U5
> +		bool "Standard UART 5"
> +		help
> +		 printascii messages are output on standard UART 5
> +
> +	config ARCH_LPC32XX_DEBUGO_U6
> +		bool "Standard UART 6"
> +		help
> +		 printascii messages are output on standard UART 6
> +
> +endchoice
IMHO this isn't something that needs configuration via Kconfig.  It's
enough to have this via #defines in debug-macro.S.

> +endmenu
> +
> +endmenu
> +
> +source "arch/arm/mach-lpc32xx/Kconfig.plat"
> +
> +endif
> +
> diff --git a/arch/arm/mach-lpc32xx/Kconfig.plat b/arch/arm/mach-lpc32xx/Kconfig.plat
> new file mode 100644
> index 0000000..a67d1ad
> --- /dev/null
> +++ b/arch/arm/mach-lpc32xx/Kconfig.plat
> @@ -0,0 +1,98 @@
> +menu "LPC32XX platform choices"
> +
> +choice
> +    prompt "Choose your board"
> +    default MACH_PHY3250
> +    help
> +        This menu selects the LPC3250 board to support for this build
> +
> +    config MACH_PHY3250
> +        bool "Phytec 3250 development board"
> +	help
> +	    Support for the Phytec 3250 development board
> +
> +endchoice
Again, support more than one mach per kernel?

> +choice
> +	prompt "Phytec LCD module revisions"
> +	depends on MACH_PHY3250
> +	default PHY3250_QVGA_PANEL_1307_1
> +	help
> +	  Select one of the supported LCD panel revisions
> +
> +config PHY3250_QVGA_PANEL_1307_0
> +	bool "1307.0 QVGA panel (portrait mode RGB565)"
> +	help
> +	  Use LCD module version 1307.0
> +
> +config PHY3250_QVGA_PANEL_1307_1
> +	bool "1307.1 QVGA panel (portrait mode RGB565)"
> +	help
> +	  Use LCD module version 1307.1
> +
> +endchoice
autodetect?  kernel-parameter?

> +choice
> +	prompt "Phytec CPU module revisions"
> +	depends on MACH_PHY3250
> +	default PHY3250_CPU_MODULE_1304_1
> +	help
> +	  Select one of the supported CPU module revisions
> +
> +config PHY3250_CPU_MODULE_1304_0
> +	bool "1304.0 CPU module"
> +	help
> +	  Use CPU module version 1304.0
> +
> +config PHY3250_CPU_MODULE_1304_1
> +	bool "1304.1 CPU module"
> +	help
> +	  Use CPU module version 1304.1
> +
> +endchoice
ditto, autodetect?  kernel-parameter?

> +choice
> +	prompt "Phytec Carrier board revisions"
> +	depends on MACH_PHY3250
> +	default PHY3250_CARRIER_1305_3
> +	help
> +	  Select one of the supported carrier board revisions
> +
> +config PHY3250_CARRIER_1305_01
> +	bool "1305.0 or 1305.1 carrier board"
> +	help
> +	  Use carrier board version 1305.0 or 1305.1
> +
> +config PHY3250_CARRIER_1305_2
> +	bool "1305.2 carrier board"
> +	help
> +	  Use carrier board version 1305.2
> +
> +config PHY3250_CARRIER_1305_3
> +	bool "1305.3 carrier board"
> +	help
> +	  Use carrier board version 1305.3
> +
> +endchoice
ditto

> +choice
> +	prompt "Internal IRAM use"
> +	default MACH_LPC32XX_IRAM_RESERVED
> +	depends on MACH_PHY3250
> +
> +config MACH_LPC32XX_IRAM_RESERVED
> +	bool "IRAM is not used (reserved)"
> +	help
> +	  IRAM is not used for video or networking and can be used for
> +	  other purposes or drivers
> +
> +config MACH_LPC32XX_IRAM_FOR_CLCD
> +	bool "Use IRAM as a video frame buffer"
> +	help
> +	  IRAM will be used for the LCD frame buffer. If the required buffer
> +	  size is larger than the size of IRAM, then SDRAM will be used
> +	  instead.
> +
> +endchoice
A request API would be nice here!?

> +endmenu
> diff --git a/arch/arm/mach-lpc32xx/Makefile b/arch/arm/mach-lpc32xx/Makefile
> new file mode 100644
> index 0000000..9c76c70
> --- /dev/null
> +++ b/arch/arm/mach-lpc32xx/Makefile
> @@ -0,0 +1,9 @@
> +#
> +# Makefile for the linux kernel.
> +#
> +
> +obj-y				:= timer.o irq.o common.o serial.o clock.o
> +obj-y				+= gpiolib.o pm.o pm_events.o suspend.o
wow, 4 tabs!

> +obj-$(CONFIG_MACH_PHY3250)	+= phy3250.o
> +
> diff --git a/arch/arm/mach-lpc32xx/Makefile.boot b/arch/arm/mach-lpc32xx/Makefile.boot
> new file mode 100644
> index 0000000..b796b41
> --- /dev/null
> +++ b/arch/arm/mach-lpc32xx/Makefile.boot
> @@ -0,0 +1,4 @@
> +   zreladdr-y	:= 0x80008000
> +params_phys-y	:= 0x80000100
I hope your bootloader passes the atag list via r2.  If so there is no
need to define params_phys-y.

> +initrd_phys-y	:= 0x82000000
initrd_phys is only needed for bootp.  Do you need it?

Best regards
Uwe

-- 
Pengutronix e.K.                              | Uwe Kleine-König            |
Industrial Linux Solutions                    | http://www.pengutronix.de/  |