[linux-2.6-block.git] / arch / sh / kernel / machvec.c

/*
 * arch/sh/kernel/machvec.c
 *
 * The SuperH machine vector setup handlers, yanked from setup.c
 *
 *  Copyright (C) 1999  Niibe Yutaka
 *  Copyright (C) 2002 - 2007 Paul Mundt
 *
 * 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/string.h>
#include <asm/machvec.h>
#include <asm/sections.h>
#include <asm/io.h>
#include <asm/irq.h>

#define MV_NAME_SIZE 32

#define for_each_mv(mv) \
	for ((mv) = (struct sh_machine_vector *)&__machvec_start; \
	     (mv) && (unsigned long)(mv) < (unsigned long)&__machvec_end; \
	     (mv)++)

static struct sh_machine_vector * __init get_mv_byname(const char *name)
{
	struct sh_machine_vector *mv;

	for_each_mv(mv)
		if (strcasecmp(name, mv->mv_name) == 0)
			return mv;

	return NULL;
}

static unsigned int __initdata machvec_selected;

static int __init early_parse_mv(char *from)
{
	char mv_name[MV_NAME_SIZE] = "";
	char *mv_end;
	char *mv_comma;
	int mv_len;
	struct sh_machine_vector *mvp;

	mv_end = strchr(from, ' ');
	if (mv_end == NULL)
		mv_end = from + strlen(from);

	mv_comma = strchr(from, ',');
	mv_len = mv_end - from;
	if (mv_len > (MV_NAME_SIZE-1))
		mv_len = MV_NAME_SIZE-1;
	memcpy(mv_name, from, mv_len);
	mv_name[mv_len] = '\0';
	from = mv_end;

	machvec_selected = 1;

	/* Boot with the generic vector */
	if (strcmp(mv_name, "generic") == 0)
		return 0;

	mvp = get_mv_byname(mv_name);
	if (unlikely(!mvp)) {
		printk("Available vectors:\n\n\t'%s', ", sh_mv.mv_name);
		for_each_mv(mvp)
			printk("'%s', ", mvp->mv_name);
		printk("\n\n");
		panic("Failed to select machvec '%s' -- halting.\n",
		      mv_name);
	} else
		sh_mv = *mvp;

	return 0;
}
early_param("sh_mv", early_parse_mv);

void __init sh_mv_setup(void)
{
	/*
	 * Only overload the machvec if one hasn't been selected on
	 * the command line with sh_mv=
	 */
	if (!machvec_selected) {
		unsigned long machvec_size;

		machvec_size = ((unsigned long)&__machvec_end -
				(unsigned long)&__machvec_start);

		/*
		 * If the machvec hasn't been preselected, use the first
		 * vector (usually the only one) from .machvec.init.
		 */
		if (machvec_size >= sizeof(struct sh_machine_vector))
			sh_mv = *(struct sh_machine_vector *)&__machvec_start;
	}

	printk(KERN_NOTICE "Booting machvec: %s\n", get_system_type());

	/*
	 * Manually walk the vec, fill in anything that the board hasn't yet
	 * by hand, wrapping to the generic implementation.
	 */
#define mv_set(elem) do { \
	if (!sh_mv.mv_##elem) \
		sh_mv.mv_##elem = generic_##elem; \
} while (0)

	mv_set(inb);	mv_set(inw);	mv_set(inl);
	mv_set(outb);	mv_set(outw);	mv_set(outl);

	mv_set(inb_p);	mv_set(inw_p);	mv_set(inl_p);
	mv_set(outb_p);	mv_set(outw_p);	mv_set(outl_p);

	mv_set(insb);	mv_set(insw);	mv_set(insl);
	mv_set(outsb);	mv_set(outsw);	mv_set(outsl);

	mv_set(readb);	mv_set(readw);	mv_set(readl);
	mv_set(writeb);	mv_set(writew);	mv_set(writel);

	mv_set(ioport_map);
	mv_set(ioport_unmap);
	mv_set(irq_demux);

	if (!sh_mv.mv_nr_irqs)
		sh_mv.mv_nr_irqs = NR_IRQS;
}
Commit	Line	Data
9655ad03 PM	1	/*
	2	* arch/sh/kernel/machvec.c
	3	*
	4	* The SuperH machine vector setup handlers, yanked from setup.c
	5	*
	6	* Copyright (C) 1999 Niibe Yutaka
	7	* Copyright (C) 2002 - 2007 Paul Mundt
	8	*
	9	* This file is subject to the terms and conditions of the GNU General Public
	10	* License. See the file "COPYING" in the main directory of this archive
	11	* for more details.
	12	*/
	13	#include <linux/init.h>
	14	#include <linux/string.h>
	15	#include <asm/machvec.h>
	16	#include <asm/sections.h>
	17	#include <asm/io.h>
	18	#include <asm/irq.h>
	19
	20	#define MV_NAME_SIZE 32
	21
	22	#define for_each_mv(mv) \
	23	for ((mv) = (struct sh_machine_vector *)&__machvec_start; \
	24	(mv) && (unsigned long)(mv) < (unsigned long)&__machvec_end; \
	25	(mv)++)
	26
	27	static struct sh_machine_vector * __init get_mv_byname(const char *name)
	28	{
	29	struct sh_machine_vector *mv;
	30
	31	for_each_mv(mv)
82f81f47	32	if (strcasecmp(name, mv->mv_name) == 0)
9655ad03 PM	33	return mv;
	34
	35	return NULL;
	36	}
	37
fd8f20e8 PM	38	static unsigned int __initdata machvec_selected;
fd8f20e8 PM	39
9655ad03 PM	40	static int __init early_parse_mv(char *from)
	41	{
	42	char mv_name[MV_NAME_SIZE] = "";
	43	char *mv_end;
	44	char *mv_comma;
	45	int mv_len;
	46	struct sh_machine_vector *mvp;
	47
	48	mv_end = strchr(from, ' ');
	49	if (mv_end == NULL)
	50	mv_end = from + strlen(from);
	51
	52	mv_comma = strchr(from, ',');
	53	mv_len = mv_end - from;
	54	if (mv_len > (MV_NAME_SIZE-1))
	55	mv_len = MV_NAME_SIZE-1;
	56	memcpy(mv_name, from, mv_len);
	57	mv_name[mv_len] = '\0';
	58	from = mv_end;
	59
fd8f20e8 PM	60	machvec_selected = 1;
	61
	62	/* Boot with the generic vector */
	63	if (strcmp(mv_name, "generic") == 0)
	64	return 0;
	65
82f81f47 PM	66	mvp = get_mv_byname(mv_name);
82f81f47 PM	67	if (unlikely(!mvp)) {
fd8f20e8	68	printk("Available vectors:\n\n\t'%s', ", sh_mv.mv_name);
82f81f47 PM	69	for_each_mv(mvp)
	70	printk("'%s', ", mvp->mv_name);
	71	printk("\n\n");
	72	panic("Failed to select machvec '%s' -- halting.\n",
	73	mv_name);
	74	} else
	75	sh_mv = *mvp;
9655ad03	76
9655ad03 PM	77	return 0;
	78	}
	79	early_param("sh_mv", early_parse_mv);
	80
	81	void __init sh_mv_setup(void)
	82	{
82f81f47 PM	83	/*
	84	* Only overload the machvec if one hasn't been selected on
	85	* the command line with sh_mv=
	86	*/
fd8f20e8	87	if (!machvec_selected) {
82f81f47 PM	88	unsigned long machvec_size;
	89
	90	machvec_size = ((unsigned long)&__machvec_end -
	91	(unsigned long)&__machvec_start);
	92
	93	/*
	94	* If the machvec hasn't been preselected, use the first
	95	* vector (usually the only one) from .machvec.init.
	96	*/
	97	if (machvec_size >= sizeof(struct sh_machine_vector))
	98	sh_mv = (struct sh_machine_vector )&__machvec_start;
	99	}
	100
	101	printk(KERN_NOTICE "Booting machvec: %s\n", get_system_type());
	102
9655ad03 PM	103	/*
	104	* Manually walk the vec, fill in anything that the board hasn't yet
	105	* by hand, wrapping to the generic implementation.
	106	*/
	107	#define mv_set(elem) do { \
	108	if (!sh_mv.mv_##elem) \
	109	sh_mv.mv_##elem = generic_##elem; \
	110	} while (0)
	111
	112	mv_set(inb); mv_set(inw); mv_set(inl);
	113	mv_set(outb); mv_set(outw); mv_set(outl);
	114
	115	mv_set(inb_p); mv_set(inw_p); mv_set(inl_p);
	116	mv_set(outb_p); mv_set(outw_p); mv_set(outl_p);
	117
	118	mv_set(insb); mv_set(insw); mv_set(insl);
	119	mv_set(outsb); mv_set(outsw); mv_set(outsl);
	120
	121	mv_set(readb); mv_set(readw); mv_set(readl);
	122	mv_set(writeb); mv_set(writew); mv_set(writel);
	123
	124	mv_set(ioport_map);
	125	mv_set(ioport_unmap);
	126	mv_set(irq_demux);
	127
	128	if (!sh_mv.mv_nr_irqs)
	129	sh_mv.mv_nr_irqs = NR_IRQS;
	130	}