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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2004, Psyent Corporation <www.psyent.com>
* Scott McNutt <smcnutt@psyent.com>
*/
#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_err(UCLASS_MISC, &dev);
if (ret)
return;
ret = misc_read(dev, 0, &sysid, sizeof(sysid));
if (ret < 0)
return;
stamp = sysid[1];
localtime_r(&stamp, &t);
asctime_r(&t, asc);
printf("SYSID: %08x, %s", sysid[0], asc);
}
int do_sysid(struct cmd_tbl *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(®s->id);
sysid[1] = readl(®s->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(devfdt_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,
};
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