Commit 5b5820d0 authored by Marian Balakowicz's avatar Marian Balakowicz Committed by Grant Likely
Browse files

[POWERPC] mpc5200: Add generic support for simple MPC5200 based boards 



This patch adds support for 'mpc5200-simple-platform' compatible
boards which do not need a platform specific setup. Such boards
are supported assuming the following:

- GPIO pins are configured by the firmware,
- CDM configuration (clocking) is setup correctly by firmware,
- if the 'fsl,has-wdt' property is present in one of the
  gpt nodes, then it is safe to use such gpt to reset the board,
- PCI is supported if enabled in the kernel configuration
  and if there is a PCI bus node defined in the device tree.

Signed-off-by: default avatarMarian Balakowicz <m8@semihalf.com>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 0238aa54

arch/powerpc/boot/dts/lite5200.dts

+1 −1
Original line number Diff line number Diff line
@@ -19,7 +19,7 @@ 
/ {

	model = "fsl,lite5200";

	// revision = "1.0";

	compatible = "fsl,lite5200","generic-mpc5200";

	compatible = "fsl,lite5200";

	#address-cells = <1>;

	#size-cells = <1>;

arch/powerpc/boot/dts/lite5200b.dts

+1 −1
Original line number Diff line number Diff line
@@ -19,7 +19,7 @@ 
/ {

	model = "fsl,lite5200b";

	// revision = "1.0";

	compatible = "fsl,lite5200b","generic-mpc5200";

	compatible = "fsl,lite5200b";

	#address-cells = <1>;

	#size-cells = <1>;

arch/powerpc/platforms/52xx/Kconfig

+24 −3
Original line number Diff line number Diff line
@@ -19,6 +19,28 @@ config PPC_MPC5200_BUGFIX 


	  It is safe to say 'Y' here



config PPC_MPC5200_SIMPLE

	bool "Generic support for simple MPC5200 based boards"

	depends on PPC_MULTIPLATFORM && PPC32

	select PPC_MPC5200

	select DEFAULT_UIMAGE

	select WANT_DEVICE_TREE

	default n

	help

	  This option enables support for a simple MPC52xx based boards which

	  do not need a custom platform specific setup. Such boards are

	  supported assuming the following:



	  - GPIO pins are configured by the firmware,

	  - CDM configuration (clocking) is setup correctly by firmware,

	  - if the 'fsl,has-wdt' property is present in one of the

	    gpt nodes, then it is safe to use such gpt to reset the board,

	  - PCI is supported if enabled in the kernel configuration

	    and if there is a PCI bus node defined in the device tree.



	  Boards that are compatible with this generic platform support

	  are: 'tqc,tqm5200', 'promess,motionpro', 'schindler,cm5200'.



config PPC_EFIKA

	bool "bPlan Efika 5k2. MPC5200B based computer"

	depends on PPC_MULTIPLATFORM && PPC32
@@ -31,8 +53,7 @@ config PPC_EFIKA 
config PPC_LITE5200

	bool "Freescale Lite5200 Eval Board"

	depends on PPC_MULTIPLATFORM && PPC32

	select WANT_DEVICE_TREE

	select PPC_MPC5200

	select DEFAULT_UIMAGE

	select WANT_DEVICE_TREE

	default n

arch/powerpc/platforms/52xx/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ obj-y += mpc52xx_pic.o mpc52xx_common.o 
obj-$(CONFIG_PCI)		+= mpc52xx_pci.o

endif



obj-$(CONFIG_PPC_MPC5200_SIMPLE) += mpc5200_simple.o

obj-$(CONFIG_PPC_EFIKA)		+= efika.o

obj-$(CONFIG_PPC_LITE5200)	+= lite5200.o

arch/powerpc/platforms/52xx/mpc5200_simple.c

0 → 100644
+85 −0
Original line number Diff line number Diff line 
/*

 * Support for 'mpc5200-simple-platform' compatible boards.

 *

 * Written by Marian Balakowicz <m8@semihalf.com>

 * Copyright (C) 2007 Semihalf

 *

 * This program is free software; you can redistribute  it and/or modify it

 * under  the terms of  the GNU General  Public License as published by the

 * Free Software Foundation;  either version 2 of the  License, or (at your

 * option) any later version.

 *

 * Description:

 * This code implements support for a simple MPC52xx based boards which

 * do not need a custom platform specific setup. Such boards are

 * supported assuming the following:

 *

 * - GPIO pins are configured by the firmware,

 * - CDM configuration (clocking) is setup correctly by firmware,

 * - if the 'fsl,has-wdt' property is present in one of the

 *   gpt nodes, then it is safe to use such gpt to reset the board,

 * - PCI is supported if enabled in the kernel configuration

 *   and if there is a PCI bus node defined in the device tree.

 *

 * Boards that are compatible with this generic platform support

 * are listed in a 'board' table.

 */



#undef DEBUG

#include <asm/time.h>

#include <asm/prom.h>

#include <asm/machdep.h>

#include <asm/mpc52xx.h>



/*

 * Setup the architecture

 */

static void __init mpc5200_simple_setup_arch(void)

{

	if (ppc_md.progress)

		ppc_md.progress("mpc5200_simple_setup_arch()", 0);



	/* Some mpc5200 & mpc5200b related configuration */

	mpc5200_setup_xlb_arbiter();



	/* Map wdt for mpc52xx_restart() */

	mpc52xx_map_wdt();



	mpc52xx_setup_pci();

}



/* list of the supported boards */

static char *board[] __initdata = {

	"promess,motionpro",

	"schindler,cm5200",

	"tqc,tqm5200",

	NULL

};



/*

 * Called very early, MMU is off, device-tree isn't unflattened

 */

static int __init mpc5200_simple_probe(void)

{

	unsigned long node = of_get_flat_dt_root();

	int i = 0;



	while (board[i]) {

		if (of_flat_dt_is_compatible(node, board[i]))

			break;

		i++;

	}

	

	return (board[i] != NULL);

}



define_machine(mpc5200_simple_platform) {

	.name		= "mpc5200-simple-platform",

	.probe		= mpc5200_simple_probe,

	.setup_arch	= mpc5200_simple_setup_arch,

	.init		= mpc52xx_declare_of_platform_devices,

	.init_IRQ	= mpc52xx_init_irq,

	.get_irq	= mpc52xx_get_irq,

	.restart	= mpc52xx_restart,

	.calibrate_decr	= generic_calibrate_decr,

};

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