mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
a821c4af79
These support the flat device tree. We want to use the dev_read_..() prefix for functions that support both flat tree and live tree. So rename the existing functions to avoid confusion. In the end we will have: 1. dev_read_addr...() - works on devices, supports flat/live tree 2. devfdt_get_addr...() - current functions, flat tree only 3. of_get_address() etc. - new functions, live tree only All drivers will be written to use 1. That function will in turn call either 2 or 3 depending on whether the flat or live tree is in use. Note this involves changing some dead code - the imx_lpi2c.c file. Signed-off-by: Simon Glass <sjg@chromium.org>
100 lines
2 KiB
C
100 lines
2 KiB
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_err(UCLASS_MISC, &dev);
|
|
if (ret)
|
|
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(®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,
|
|
};
|