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Commit 46388c0d authored by Remi Machet's avatar Remi Machet Committed by Paul Mackerras
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powerpc: C2K board driver 



Support for the C2K cPCI Single Board Computer from GEFanuc
(PowerPC MPC7448 with a Marvell MV64460 chipset).
All features of the board are not supported yet, but the board
boots, flash works, all Ethernet ports are working and PCI
devices are all found (USB and SATA on PCI1 do not work yet).

Part 3 of 5: driver for the board.  At this time it is very generic
and similar to its original, the driver for the prpmc2800.

Signed-off-by: default avatarRemi Machet <rmachet@slac.stanford.edu>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent c6ec08e0

arch/powerpc/platforms/embedded6xx/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -6,3 +6,4 @@ obj-$(CONFIG_LINKSTATION) += linkstation.o ls_uart.o 
obj-$(CONFIG_STORCENTER)	+= storcenter.o

obj-$(CONFIG_PPC_HOLLY)		+= holly.o

obj-$(CONFIG_PPC_PRPMC2800)	+= prpmc2800.o

obj-$(CONFIG_PPC_C2K)		+= c2k.o

arch/powerpc/platforms/embedded6xx/c2k.c

0 → 100644
+158 −0
Original line number Diff line number Diff line 
/*

 * Board setup routines for the GEFanuc C2K board

 *

 * Author: Remi Machet <rmachet@slac.stanford.edu>

 *

 * Originated from prpmc2800.c

 *

 * 2008 (c) Stanford University

 * 2007 (c) MontaVista, Software, Inc.

 *

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

 * under the terms of the GNU General Public License version 2 as published

 * by the Free Software Foundation.

 */



#include <linux/stddef.h>

#include <linux/kernel.h>

#include <linux/delay.h>

#include <linux/interrupt.h>

#include <linux/seq_file.h>

#include <linux/time.h>

#include <linux/of.h>

#include <linux/kexec.h>



#include <asm/machdep.h>

#include <asm/prom.h>

#include <asm/system.h>

#include <asm/time.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



static void __iomem *mv64x60_mpp_reg_base;

static void __iomem *mv64x60_gpp_reg_base;



static void __init c2k_setup_arch(void)

{

	struct device_node *np;

	phys_addr_t paddr;

	const unsigned int *reg;



	/*

	 * ioremap mpp and gpp registers in case they are later

	 * needed by c2k_reset_board().

	 */

	np = of_find_compatible_node(NULL, NULL, "marvell,mv64360-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,mv64360-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]);



#ifdef CONFIG_PCI

	mv64x60_pci_init();

#endif

}



static void c2k_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 c2k_restart(char *cmd)

{

	c2k_reset_board();

	msleep(100);

	panic("restart failed\n");

}



#ifdef CONFIG_NOT_COHERENT_CACHE

#define COHERENCY_SETTING "off"

#else

#define COHERENCY_SETTING "on"

#endif



void c2k_show_cpuinfo(struct seq_file *m)

{

	uint memsize = total_memory;



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

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

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

}



/*

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

 */

static int __init c2k_probe(void)

{

	unsigned long root = of_get_flat_dt_root();



	if (!of_flat_dt_is_compatible(root, "GEFanuc,C2K"))

		return 0;



	printk(KERN_INFO "Detected a GEFanuc C2K board\n");



	_set_L2CR(0);

	_set_L2CR(L2CR_L2E | L2CR_L2PE | L2CR_L2I);

	return 1;

}



define_machine(c2k) {

	.name			= "C2K",

	.probe			= c2k_probe,

	.setup_arch		= c2k_setup_arch,

	.init_early		= mv64x60_init_early,

	.show_cpuinfo		= c2k_show_cpuinfo,

	.init_IRQ		= mv64x60_init_irq,

	.get_irq		= mv64x60_get_irq,

	.restart		= c2k_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

};