1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
3*4882a593Smuzhiyun * Scott McNutt <smcnutt@psyent.com>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <command.h>
10*4882a593Smuzhiyun #include <dm.h>
11*4882a593Smuzhiyun #include <errno.h>
12*4882a593Smuzhiyun #include <misc.h>
13*4882a593Smuzhiyun #include <linux/time.h>
14*4882a593Smuzhiyun #include <asm/io.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun struct altera_sysid_regs {
17*4882a593Smuzhiyun u32 id; /* The system build id */
18*4882a593Smuzhiyun u32 timestamp; /* Timestamp */
19*4882a593Smuzhiyun };
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun struct altera_sysid_platdata {
22*4882a593Smuzhiyun struct altera_sysid_regs *regs;
23*4882a593Smuzhiyun };
24*4882a593Smuzhiyun
display_sysid(void)25*4882a593Smuzhiyun void display_sysid(void)
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun struct udevice *dev;
28*4882a593Smuzhiyun u32 sysid[2];
29*4882a593Smuzhiyun struct tm t;
30*4882a593Smuzhiyun char asc[32];
31*4882a593Smuzhiyun time_t stamp;
32*4882a593Smuzhiyun int ret;
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun /* the first misc device will be used */
35*4882a593Smuzhiyun ret = uclass_first_device_err(UCLASS_MISC, &dev);
36*4882a593Smuzhiyun if (ret)
37*4882a593Smuzhiyun return;
38*4882a593Smuzhiyun ret = misc_read(dev, 0, &sysid, sizeof(sysid));
39*4882a593Smuzhiyun if (ret)
40*4882a593Smuzhiyun return;
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun stamp = sysid[1];
43*4882a593Smuzhiyun localtime_r(&stamp, &t);
44*4882a593Smuzhiyun asctime_r(&t, asc);
45*4882a593Smuzhiyun printf("SYSID: %08x, %s", sysid[0], asc);
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
do_sysid(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])48*4882a593Smuzhiyun int do_sysid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun display_sysid();
51*4882a593Smuzhiyun return 0;
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun U_BOOT_CMD(
55*4882a593Smuzhiyun sysid, 1, 1, do_sysid,
56*4882a593Smuzhiyun "display Nios-II system id",
57*4882a593Smuzhiyun ""
58*4882a593Smuzhiyun );
59*4882a593Smuzhiyun
altera_sysid_read(struct udevice * dev,int offset,void * buf,int size)60*4882a593Smuzhiyun static int altera_sysid_read(struct udevice *dev,
61*4882a593Smuzhiyun int offset, void *buf, int size)
62*4882a593Smuzhiyun {
63*4882a593Smuzhiyun struct altera_sysid_platdata *plat = dev->platdata;
64*4882a593Smuzhiyun struct altera_sysid_regs *const regs = plat->regs;
65*4882a593Smuzhiyun u32 *sysid = buf;
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun sysid[0] = readl(®s->id);
68*4882a593Smuzhiyun sysid[1] = readl(®s->timestamp);
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun return 0;
71*4882a593Smuzhiyun }
72*4882a593Smuzhiyun
altera_sysid_ofdata_to_platdata(struct udevice * dev)73*4882a593Smuzhiyun static int altera_sysid_ofdata_to_platdata(struct udevice *dev)
74*4882a593Smuzhiyun {
75*4882a593Smuzhiyun struct altera_sysid_platdata *plat = dev_get_platdata(dev);
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun plat->regs = map_physmem(devfdt_get_addr(dev),
78*4882a593Smuzhiyun sizeof(struct altera_sysid_regs),
79*4882a593Smuzhiyun MAP_NOCACHE);
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun return 0;
82*4882a593Smuzhiyun }
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun static const struct misc_ops altera_sysid_ops = {
85*4882a593Smuzhiyun .read = altera_sysid_read,
86*4882a593Smuzhiyun };
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun static const struct udevice_id altera_sysid_ids[] = {
89*4882a593Smuzhiyun { .compatible = "altr,sysid-1.0" },
90*4882a593Smuzhiyun {}
91*4882a593Smuzhiyun };
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun U_BOOT_DRIVER(altera_sysid) = {
94*4882a593Smuzhiyun .name = "altera_sysid",
95*4882a593Smuzhiyun .id = UCLASS_MISC,
96*4882a593Smuzhiyun .of_match = altera_sysid_ids,
97*4882a593Smuzhiyun .ofdata_to_platdata = altera_sysid_ofdata_to_platdata,
98*4882a593Smuzhiyun .platdata_auto_alloc_size = sizeof(struct altera_sysid_platdata),
99*4882a593Smuzhiyun .ops = &altera_sysid_ops,
100*4882a593Smuzhiyun };
101