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Commit fd4ba7e2 authored by Dale Farnsworth's avatar Dale Farnsworth Committed by Paul Mackerras
Browse files

[POWERPC] Add arch/powerpc support for the Motorola PrPMC2800 



This finally adds the PPC_PRPMC2800 Kconfig option, the board setup
code (the setup and reset functions) and the defconfig, to support the
Motorola PrPMC2800 platform.

Signed-off-by: default avatarDale Farnsworth <dale@farnsworth.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent c368d921

arch/powerpc/Kconfig

+1 −1
Original line number Original line Diff line number Diff line
@@ -454,7 +454,7 @@ config ARCH_ENABLE_MEMORY_HOTPLUG 




config KEXEC

config KEXEC

	bool "kexec system call (EXPERIMENTAL)"

	bool "kexec system call (EXPERIMENTAL)"

	depends on PPC_MULTIPLATFORM && EXPERIMENTAL

	depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL

	help

	help

	  kexec is a system call that implements the ability to shutdown your

	  kexec is a system call that implements the ability to shutdown your

	  current kernel, and to start another kernel.  It is like a reboot

	  current kernel, and to start another kernel.  It is like a reboot

arch/powerpc/configs/prpmc2800_defconfig

0 → 100644
+1442 −0

File added.

Preview size limit exceeded, changes collapsed.

arch/powerpc/platforms/embedded6xx/Kconfig

+8 −0
Original line number Original line Diff line number Diff line
@@ -31,6 +31,14 @@ config PPC_HOLLY 
	help

	help

	  Select PPC_HOLLY if configuring for an IBM 750GX/CL Eval

	  Select PPC_HOLLY if configuring for an IBM 750GX/CL Eval

	  Board with TSI108/9 bridge (Hickory/Holly)

	  Board with TSI108/9 bridge (Hickory/Holly)



config PPC_PRPMC2800

	bool "Motorola-PrPMC2800"

	select MV64X60

	select NOT_COHERENT_CACHE

	select WANT_DEVICE_TREE

	help

	  This option enables support for the Motorola PrPMC2800 board

endchoice

endchoice





config TSI108_BRIDGE

config TSI108_BRIDGE

arch/powerpc/platforms/embedded6xx/Makefile

+1 −0
Original line number Original line Diff line number Diff line
@@ -4,3 +4,4 @@ 
obj-$(CONFIG_MPC7448HPC2)	+= mpc7448_hpc2.o

obj-$(CONFIG_MPC7448HPC2)	+= mpc7448_hpc2.o

obj-$(CONFIG_LINKSTATION)	+= linkstation.o ls_uart.o

obj-$(CONFIG_LINKSTATION)	+= linkstation.o ls_uart.o

obj-$(CONFIG_PPC_HOLLY)		+= holly.o

obj-$(CONFIG_PPC_HOLLY)		+= holly.o

obj-$(CONFIG_PPC_PRPMC2800)	+= prpmc2800.o

arch/powerpc/platforms/embedded6xx/prpmc2800.c

0 → 100644
+171 −0
Original line number Original line Diff line number Diff line 
/*

 * Board setup routines for the Motorola PrPMC2800

 *

 * Author: Dale Farnsworth <dale@farnsworth.org>

 *

 * 2007 (c) MontaVista, Software, Inc.  This file is licensed under

 * the terms of the GNU General Public License version 2.  This program

 * is licensed "as is" without any warranty of any kind, whether express

 * or implied.

 */



#include <linux/stddef.h>

#include <linux/kernel.h>

#include <linux/delay.h>

#include <linux/interrupt.h>

#include <linux/seq_file.h>



#include <asm/machdep.h>

#include <asm/prom.h>

#include <asm/system.h>

#include <asm/time.h>

#include <asm/kexec.h>



#include <mm/mmu_decl.h>



#include <sysdev/mv64x60.h>



#define MV64x60_MPP_CNTL_0	0x0000

#define MV64x60_MPP_CNTL_2	0x0008



#define MV64x60_GPP_IO_CNTL	0x0000

#define MV64x60_GPP_LEVEL_CNTL	0x0010

#define MV64x60_GPP_VALUE_SET	0x0018



#define PLATFORM_NAME_MAX	32



static char prpmc2800_platform_name[PLATFORM_NAME_MAX];



static void __iomem *mv64x60_mpp_reg_base;

static void __iomem *mv64x60_gpp_reg_base;



static void __init prpmc2800_setup_arch(void)

{

	struct device_node *np;

	phys_addr_t paddr;

	const unsigned int *reg;

	const unsigned int *prop;



	/*

	 * ioremap mpp and gpp registers in case they are later

	 * needed by prpmc2800_reset_board().

	 */

	np = of_find_compatible_node(NULL, NULL, "marvell,mv64x60-mpp");

	reg = of_get_property(np, "reg", NULL);

	paddr = of_translate_address(np, reg);

	of_node_put(np);

	mv64x60_mpp_reg_base = ioremap(paddr, reg[1]);



	np = of_find_compatible_node(NULL, NULL, "marvell,mv64x60-gpp");

	reg = of_get_property(np, "reg", NULL);

	paddr = of_translate_address(np, reg);

	of_node_put(np);

	mv64x60_gpp_reg_base = ioremap(paddr, reg[1]);



	np = of_find_node_by_type(NULL, "cpu");

	prop = of_get_property(np, "clock-frequency", NULL);

	if (prop)

		loops_per_jiffy = *prop / HZ;

	of_node_put(np);



#ifdef CONFIG_PCI

	mv64x60_pci_init();

#endif



	printk("Motorola %s\n", prpmc2800_platform_name);

}



static void prpmc2800_reset_board(void)

{

	u32 temp;



	local_irq_disable();



	temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0);

	temp &= 0xFFFF0FFF;

	out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0, temp);



	temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL);

	temp |= 0x00000004;

	out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp);



	temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL);

	temp |= 0x00000004;

	out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp);



	temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2);

	temp &= 0xFFFF0FFF;

	out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2, temp);



	temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL);

	temp |= 0x00080000;

	out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp);



	temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL);

	temp |= 0x00080000;

	out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp);



	out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_VALUE_SET, 0x00080004);

}



static void prpmc2800_restart(char *cmd)

{

	volatile ulong i = 10000000;



	prpmc2800_reset_board();



	while (i-- > 0);

	panic("restart failed\n");

}



#ifdef CONFIG_NOT_COHERENT_CACHE

#define PPRPM2800_COHERENCY_SETTING "off"

#else

#define PPRPM2800_COHERENCY_SETTING "on"

#endif



void prpmc2800_show_cpuinfo(struct seq_file *m)

{

	uint memsize = total_memory;



	seq_printf(m, "Vendor\t\t: Motorola\n");

	seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));

	seq_printf(m, "coherency\t: %s\n", PPRPM2800_COHERENCY_SETTING);

}



/*

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

 */

static int __init prpmc2800_probe(void)

{

	unsigned long root = of_get_flat_dt_root();

	unsigned long len = PLATFORM_NAME_MAX;

	void *m;



	if (!of_flat_dt_is_compatible(root, "motorola,PrPMC2800"))

		return 0;



	/* Update ppc_md.name with name from dt */

	m = of_get_flat_dt_prop(root, "model", &len);

	if (m)

		strncpy(prpmc2800_platform_name, m,

			min((int)len, PLATFORM_NAME_MAX - 1));



	return 1;

}



define_machine(prpmc2800){

	.name			= prpmc2800_platform_name,

	.probe			= prpmc2800_probe,

	.setup_arch		= prpmc2800_setup_arch,

	.show_cpuinfo		= prpmc2800_show_cpuinfo,

	.init_IRQ		= mv64x60_init_irq,

	.get_irq		= mv64x60_get_irq,

	.restart		= prpmc2800_restart,

	.calibrate_decr		= generic_calibrate_decr,

#ifdef CONFIG_KEXEC

	.machine_kexec		= default_machine_kexec,

	.machine_kexec_prepare	= default_machine_kexec_prepare,

	.machine_crash_shutdown	= default_machine_crash_shutdown,

#endif

};