Commit 9020fc96 authored by Kim Phillips's avatar Kim Phillips Committed by Paul Mackerras
Browse files

[POWERPC] Add support for the mpc832x mds board 



Add support for MPC832x MDS evaluation board.

This patch depends on the 8360+QE lib patches by Leo.

The MPC832x processors (MPC8323E, MPC8323, MPC8321E, MPC8321) sport
the e300c2 core plus a QUICC Engine (QE).  This patch adds support for
the 832x MDS evaluation board.

The 832x MDS dts and defconfig files are pending more tests.

Signed-off-by: default avatarKim Phillips <kim.phillips@freescale.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 6c4a2501

arch/powerpc/platforms/83xx/Kconfig

+13 −0
Original line number Diff line number Diff line
@@ -5,6 +5,13 @@ choice 
	prompt "Machine Type"

	default MPC834x_SYS



config MPC832x_MDS

	bool "Freescale MPC832x MDS"

	select DEFAULT_UIMAGE

	select QUICC_ENGINE

	help

	  This option enables support for the MPC832x MDS evaluation board.



config MPC834x_SYS

	bool "Freescale MPC834x SYS"

	select DEFAULT_UIMAGE
@@ -27,6 +34,12 @@ config MPC834x_ITX 


endchoice



config PPC_MPC832x

	bool

	select PPC_UDBG_16550

	select PPC_INDIRECT_PCI

	default y if MPC832x_MDS



config MPC834x

	bool

	select PPC_UDBG_16550

arch/powerpc/platforms/83xx/mpc832x_mds.c

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+215 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved.

 *

 * Description:

 * MPC832xE MDS board specific routines.

 *

 * 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.

 */



#include <linux/stddef.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/errno.h>

#include <linux/reboot.h>

#include <linux/pci.h>

#include <linux/kdev_t.h>

#include <linux/major.h>

#include <linux/console.h>

#include <linux/delay.h>

#include <linux/seq_file.h>

#include <linux/root_dev.h>

#include <linux/initrd.h>



#include <asm/system.h>

#include <asm/atomic.h>

#include <asm/time.h>

#include <asm/io.h>

#include <asm/machdep.h>

#include <asm/ipic.h>

#include <asm/bootinfo.h>

#include <asm/irq.h>

#include <asm/prom.h>

#include <asm/udbg.h>

#include <sysdev/fsl_soc.h>

#include <asm/qe.h>

#include <asm/qe_ic.h>



#include "mpc83xx.h"

#include "mpc832x_mds.h"



#undef DEBUG

#ifdef DEBUG

#define DBG(fmt...) udbg_printf(fmt)

#else

#define DBG(fmt...)

#endif



#ifndef CONFIG_PCI

unsigned long isa_io_base = 0;

unsigned long isa_mem_base = 0;

#endif



static u8 *bcsr_regs = NULL;



u8 *get_bcsr(void)

{

	return bcsr_regs;

}



/* ************************************************************************

 *

 * Setup the architecture

 *

 */

static void __init mpc832x_sys_setup_arch(void)

{

	struct device_node *np;



	if (ppc_md.progress)

		ppc_md.progress("mpc832x_sys_setup_arch()", 0);



	np = of_find_node_by_type(NULL, "cpu");

	if (np != 0) {

		unsigned int *fp =

		    (int *)get_property(np, "clock-frequency", NULL);

		if (fp != 0)

			loops_per_jiffy = *fp / HZ;

		else

			loops_per_jiffy = 50000000 / HZ;

		of_node_put(np);

	}



	/* Map BCSR area */

	np = of_find_node_by_name(NULL, "bcsr");

	if (np != 0) {

		struct resource res;



		of_address_to_resource(np, 0, &res);

		bcsr_regs = ioremap(res.start, res.end - res.start +1);

		of_node_put(np);

	}



#ifdef CONFIG_PCI

	for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)

		add_bridge(np);



	ppc_md.pci_swizzle = common_swizzle;

	ppc_md.pci_exclude_device = mpc83xx_exclude_device;

#endif



#ifdef CONFIG_QUICC_ENGINE

	qe_reset();



	if ((np = of_find_node_by_name(np, "par_io")) != NULL) {

		par_io_init(np);

		of_node_put(np);



		for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)

			par_io_of_config(np);

	}



	if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))

			!= NULL){

		/* Reset the Ethernet PHY */

		bcsr_regs[9] &= ~0x20;

		udelay(1000);

		bcsr_regs[9] |= 0x20;

		iounmap(bcsr_regs);

		of_node_put(np);

	}



#endif				/* CONFIG_QUICC_ENGINE */



#ifdef CONFIG_BLK_DEV_INITRD

	if (initrd_start)

		ROOT_DEV = Root_RAM0;

	else

#endif

#ifdef  CONFIG_ROOT_NFS

		ROOT_DEV = Root_NFS;

#else

		ROOT_DEV = Root_HDA1;

#endif

}



void __init mpc832x_sys_init_IRQ(void)

{



	struct device_node *np;



	np = of_find_node_by_type(NULL, "ipic");

	if (!np)

		return;



	ipic_init(np, 0);



	/* Initialize the default interrupt mapping priorities,

	 * in case the boot rom changed something on us.

	 */

	ipic_set_default_priority();

	of_node_put(np);



#ifdef CONFIG_QUICC_ENGINE

	np = of_find_node_by_type(NULL, "qeic");

	if (!np)

		return;



	qe_ic_init(np, 0);

	of_node_put(np);

#endif				/* CONFIG_QUICC_ENGINE */

}



#if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)

extern ulong ds1374_get_rtc_time(void);

extern int ds1374_set_rtc_time(ulong);



static int __init mpc832x_rtc_hookup(void)

{

	struct timespec tv;



	ppc_md.get_rtc_time = ds1374_get_rtc_time;

	ppc_md.set_rtc_time = ds1374_set_rtc_time;



	tv.tv_nsec = 0;

	tv.tv_sec = (ppc_md.get_rtc_time) ();

	do_settimeofday(&tv);



	return 0;

}



late_initcall(mpc832x_rtc_hookup);

#endif



/*

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

 */

static int __init mpc832x_sys_probe(void)

{

	char *model = of_get_flat_dt_prop(of_get_flat_dt_root(),

					  "model", NULL);



	if (model == NULL)

		return 0;

	if (strcmp(model, "MPC8323EMDS"))

		return 0;



	DBG("%s found\n", model);



	return 1;

}



define_machine(mpc832x_mds) {

	.name 		= "MPC832x MDS",

	.probe 		= mpc832x_sys_probe,

	.setup_arch 	= mpc832x_sys_setup_arch,

	.init_IRQ 	= mpc832x_sys_init_IRQ,

	.get_irq 	= ipic_get_irq,

	.restart 	= mpc83xx_restart,

	.time_init 	= mpc83xx_time_init,

	.calibrate_decr	= generic_calibrate_decr,

	.progress 	= udbg_progress,

};

arch/powerpc/platforms/83xx/mpc832x_mds.h

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+19 −0
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/*

 * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved.

 *

 * Description:

 * MPC832x MDS board specific header.

 *

 * 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.

 *

 */



#ifndef __MACH_MPC832x_MDS_H__

#define __MACH_MPC832x_MDS_H__



extern u8 *get_bcsr(void);



#endif				/* __MACH_MPC832x_MDS_H__ */

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