path: root/arch/mips/txx9/generic/setup.c

/*
 * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
 *	    and RBTX49xx patch from CELF patch archive.
 *
 * 2003-2005 (c) MontaVista Software, Inc.
 * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/string.h>
#include <linux/module.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/serial_core.h>
#include <linux/mtd/physmap.h>
#include <linux/leds.h>
#include <linux/sysdev.h>
#include <linux/slab.h>
#include <linux/irq.h>
#include <asm/bootinfo.h>
#include <asm/time.h>
#include <asm/reboot.h>
#include <asm/r4kcache.h>
#include <asm/sections.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/pci.h>
#include <asm/txx9tmr.h>
#include <asm/txx9/ndfmc.h>
#include <asm/txx9/dmac.h>
#ifdef CONFIG_CPU_TX49XX
#include <asm/txx9/tx4938.h>
#endif

/* EBUSC settings of TX4927, etc. */
struct resource txx9_ce_res[8];
static char txx9_ce_res_name[8][4];	/* "CEn" */

/* pcode, internal register */
unsigned int txx9_pcode;
char txx9_pcode_str[8];
static struct resource txx9_reg_res = {
	.name = txx9_pcode_str,
	.flags = IORESOURCE_MEM,
};
void __init
txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
		sprintf(txx9_ce_res_name[i], "CE%d", i);
		txx9_ce_res[i].flags = IORESOURCE_MEM;
		txx9_ce_res[i].name = txx9_ce_res_name[i];
	}

	txx9_pcode = pcode;
	sprintf(txx9_pcode_str, "TX%x", pcode);
	if (base) {
		txx9_reg_res.start = base & 0xfffffffffULL;
		txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
		request_resource(&iomem_resource, &txx9_reg_res);
	}
}

/* clocks */
unsigned int txx9_master_clock;
unsigned int txx9_cpu_clock;
unsigned int txx9_gbus_clock;

#ifdef CONFIG_CPU_TX39XX
/* don't enable by default - see errata */
int txx9_ccfg_toeon __initdata;
#else
int txx9_ccfg_toeon __initdata = 1;
#endif

/* Minimum CLK support */

struct clk *clk_get(struct device *dev, const char *id)
{
	if (!strcmp(id, "spi-baseclk"))
		return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 2);
	if (!strcmp(id, "imbus_clk"))
		return (struct clk *)((unsigned long)txx9_gbus_clock / 2);
	return ERR_PTR(-ENOENT);
}
EXPORT_SYMBOL(clk_get);

int clk_enable(struct clk *clk)
{
	return 0;
}
EXPORT_SYMBOL(clk_enable);

void clk_disable(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_disable);

unsigned long clk_get_rate(struct clk *clk)
{
	return (unsigned long)clk;
}
EXPORT_SYMBOL(clk_get_rate);

void clk_put(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_put);

/* GPIO support */

#ifdef CONFIG_GENERIC_GPIO
int gpio_to_irq(unsigned gpio)
{
	return -EINVAL;
}
EXPORT_SYMBOL(gpio_to_irq);

int irq_to_gpio(unsigned irq)
{
	return -EINVAL;
}
EXPORT_SYMBOL(irq_to_gpio);
#endif

#define BOARD_VEC(board)	extern struct txx9_board_vec board;
#include <asm/txx9/boards.h>
#undef BOARD_VEC

struct txx9_board_vec *txx9_board_vec __initdata;
static char txx9_system_type[32];

static struct txx9_board_vec *board_vecs[] __initdata = {
#define BOARD_VEC(board)	&board,
#include <asm/txx9/boards.h>
#undef BOARD_VEC
};

static struct txx9_board_vec *__init find_board_byname(const char *name)
{
	int i;

	/* search board_vecs table */
	for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
		if (strstr(board_vecs[i]->system, name))
			return board_vecs[i];
	}
	return NULL;
}

static void __init prom_init_cmdline(void)
{
	int argc;
	int *argv32;
	int i;			/* Always ignore the "-c" at argv[0] */

	if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
		/*
		 * argc is not a valid number, or argv32 is not a valid
		 * pointer
		 */
		argc = 0;
		argv32 = NULL;
	} else {
		argc = (int)fw_arg0;
		argv32 = (int *)fw_arg1;
	}

	arcs_cmdline[0]