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99 lines
2.0 KiB
99 lines
2.0 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (C) Copyright 2004, Psyent Corporation <www.psyent.com> |
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* Scott McNutt <[email protected]> |
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*/ |
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#include <common.h> |
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#include <command.h> |
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#include <dm.h> |
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#include <errno.h> |
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#include <misc.h> |
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#include <linux/time.h> |
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#include <asm/io.h> |
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struct altera_sysid_regs { |
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u32 id; /* The system build id */ |
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u32 timestamp; /* Timestamp */ |
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}; |
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struct altera_sysid_platdata { |
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struct altera_sysid_regs *regs; |
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}; |
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void display_sysid(void) |
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{ |
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struct udevice *dev; |
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u32 sysid[2]; |
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struct tm t; |
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char asc[32]; |
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time_t stamp; |
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int ret; |
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/* the first misc device will be used */ |
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ret = uclass_first_device_err(UCLASS_MISC, &dev); |
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if (ret) |
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return; |
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ret = misc_read(dev, 0, &sysid, sizeof(sysid)); |
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if (ret) |
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return; |
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stamp = sysid[1]; |
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localtime_r(&stamp, &t); |
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asctime_r(&t, asc); |
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printf("SYSID: %08x, %s", sysid[0], asc); |
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} |
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int do_sysid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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{ |
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display_sysid(); |
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return 0; |
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} |
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U_BOOT_CMD( |
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sysid, 1, 1, do_sysid, |
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"display Nios-II system id", |
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"" |
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); |
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static int altera_sysid_read(struct udevice *dev, |
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int offset, void *buf, int size) |
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{ |
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struct altera_sysid_platdata *plat = dev->platdata; |
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struct altera_sysid_regs *const regs = plat->regs; |
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u32 *sysid = buf; |
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sysid[0] = readl(®s->id); |
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sysid[1] = readl(®s->timestamp); |
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return 0; |
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} |
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static int altera_sysid_ofdata_to_platdata(struct udevice *dev) |
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{ |
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struct altera_sysid_platdata *plat = dev_get_platdata(dev); |
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plat->regs = map_physmem(devfdt_get_addr(dev), |
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sizeof(struct altera_sysid_regs), |
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MAP_NOCACHE); |
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return 0; |
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} |
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static const struct misc_ops altera_sysid_ops = { |
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.read = altera_sysid_read, |
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}; |
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static const struct udevice_id altera_sysid_ids[] = { |
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{ .compatible = "altr,sysid-1.0" }, |
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{} |
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}; |
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U_BOOT_DRIVER(altera_sysid) = { |
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.name = "altera_sysid", |
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.id = UCLASS_MISC, |
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.of_match = altera_sysid_ids, |
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.ofdata_to_platdata = altera_sysid_ofdata_to_platdata, |
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.platdata_auto_alloc_size = sizeof(struct altera_sysid_platdata), |
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.ops = &altera_sysid_ops, |
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};
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