[people/ms/u-boot.git] / drivers / misc / altera_sysid.c

/*
 * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
 * Scott McNutt <smcnutt@psyent.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <command.h>
#include <dm.h>
#include <errno.h>
#include <misc.h>
#include <linux/time.h>
#include <asm/io.h>

struct altera_sysid_regs {
	u32	id;		/* The system build id */
	u32	timestamp;	/* Timestamp */
};

struct altera_sysid_platdata {
	struct altera_sysid_regs *regs;
};

void display_sysid(void)
{
	struct udevice *dev;
	u32 sysid[2];
	struct tm t;
	char asc[32];
	time_t stamp;
	int ret;

	/* the first misc device will be used */
	ret = uclass_first_device(UCLASS_MISC, &dev);
	if (ret)
		return;
	if (!dev)
		return;
	ret = misc_read(dev, 0, &sysid, sizeof(sysid));
	if (ret)
		return;

	stamp = sysid[1];
	localtime_r(&stamp, &t);
	asctime_r(&t, asc);
	printf("SYSID: %08x, %s", sysid[0], asc);
}

int do_sysid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	display_sysid();
	return 0;
}

U_BOOT_CMD(
	sysid,	1,	1,	do_sysid,
	"display Nios-II system id",
	""
);

static int altera_sysid_read(struct udevice *dev,
			     int offset, void *buf, int size)
{
	struct altera_sysid_platdata *plat = dev->platdata;
	struct altera_sysid_regs *const regs = plat->regs;
	u32 *sysid = buf;

	sysid[0] = readl(&regs->id);
	sysid[1] = readl(&regs->timestamp);

	return 0;
}

static int altera_sysid_ofdata_to_platdata(struct udevice *dev)
{
	struct altera_sysid_platdata *plat = dev_get_platdata(dev);

	plat->regs = map_physmem(dev_get_addr(dev),
				 sizeof(struct altera_sysid_regs),
				 MAP_NOCACHE);

	return 0;
}

static const struct misc_ops altera_sysid_ops = {
	.read = altera_sysid_read,
};

static const struct udevice_id altera_sysid_ids[] = {
	{ .compatible = "altr,sysid-1.0" },
	{}
};

U_BOOT_DRIVER(altera_sysid) = {
	.name	= "altera_sysid",
	.id	= UCLASS_MISC,
	.of_match = altera_sysid_ids,
	.ofdata_to_platdata = altera_sysid_ofdata_to_platdata,
	.platdata_auto_alloc_size = sizeof(struct altera_sysid_platdata),
	.ops	= &altera_sysid_ops,
};
Commit	Line	Data
ca844dd8 TC	1	/*
	2	* (C) Copyright 2004, Psyent Corporation <www.psyent.com>
	3	* Scott McNutt <smcnutt@psyent.com>
	4	*
	5	* SPDX-License-Identifier: GPL-2.0+
	6	*/
	7
	8	#include <common.h>
	9	#include <command.h>
	10	#include <dm.h>
	11	#include <errno.h>
	12	#include <misc.h>
	13	#include <linux/time.h>
	14	#include <asm/io.h>
	15
	16	struct altera_sysid_regs {
	17	u32 id; /* The system build id */
	18	u32 timestamp; /* Timestamp */
	19	};
	20
	21	struct altera_sysid_platdata {
	22	struct altera_sysid_regs *regs;
	23	};
	24
	25	void display_sysid(void)
	26	{
	27	struct udevice *dev;
	28	u32 sysid[2];
	29	struct tm t;
	30	char asc[32];
	31	time_t stamp;
	32	int ret;
	33
	34	/* the first misc device will be used */
	35	ret = uclass_first_device(UCLASS_MISC, &dev);
	36	if (ret)
	37	return;
	38	if (!dev)
	39	return;
	40	ret = misc_read(dev, 0, &sysid, sizeof(sysid));
	41	if (ret)
	42	return;
	43
	44	stamp = sysid[1];
	45	localtime_r(&stamp, &t);
	46	asctime_r(&t, asc);
	47	printf("SYSID: %08x, %s", sysid[0], asc);
	48	}
	49
	50	int do_sysid(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	51	{
	52	display_sysid();
	53	return 0;
	54	}
	55
	56	U_BOOT_CMD(
	57	sysid, 1, 1, do_sysid,
	58	"display Nios-II system id",
	59	""
	60	);
	61
	62	static int altera_sysid_read(struct udevice *dev,
	63	int offset, void *buf, int size)
	64	{
65	struct altera_sysid_platdata *plat = dev->platdata;
66	struct altera_sysid_regs *const regs = plat->regs;
67	u32 *sysid = buf;
68
69	sysid[0] = readl(&regs->id);
70	sysid[1] = readl(&regs->timestamp);
71
72	return 0;
73	}
74
75	static int altera_sysid_ofdata_to_platdata(struct udevice *dev)
76	{
77	struct altera_sysid_platdata *plat = dev_get_platdata(dev);
78
9cbb923b TC	79	plat->regs = map_physmem(dev_get_addr(dev),
	80	sizeof(struct altera_sysid_regs),
	81	MAP_NOCACHE);
ca844dd8 TC	82
	83	return 0;
	84	}
	85
	86	static const struct misc_ops altera_sysid_ops = {
	87	.read = altera_sysid_read,
	88	};
	89
	90	static const struct udevice_id altera_sysid_ids[] = {
687dbff2 TC	91	{ .compatible = "altr,sysid-1.0" },
687dbff2 TC	92	{}
ca844dd8 TC	93	};
	94
	95	U_BOOT_DRIVER(altera_sysid) = {
	96	.name = "altera_sysid",
	97	.id = UCLASS_MISC,
	98	.of_match = altera_sysid_ids,
	99	.ofdata_to_platdata = altera_sysid_ofdata_to_platdata,
	100	.platdata_auto_alloc_size = sizeof(struct altera_sysid_platdata),
	101	.ops = &altera_sysid_ops,
	102	};