+// SPDX-License-Identifier: GPL-2.0+
/*
- * (C) Copyright 2001
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ * Copyright (c) 2020 Wind River Systems, Inc.
*
- * SPDX-License-Identifier: GPL-2.0+
+ * Author:
+ * Bin Meng <bin.meng@windriver.com>
+ *
+ * A command interface to access misc devices with MISC uclass driver APIs.
*/
-/*
- * Misc functions
- */
#include <common.h>
#include <command.h>
-#include <console.h>
-
-static int do_sleep(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+#include <dm.h>
+#include <errno.h>
+#include <misc.h>
+
+enum misc_op {
+ MISC_OP_READ,
+ MISC_OP_WRITE
+};
+
+static char *misc_op_str[] = {
+ "read",
+ "write"
+};
+
+static int do_misc_list(struct cmd_tbl *cmdtp, int flag,
+ int argc, char *const argv[])
{
- ulong start = get_timer(0);
- ulong mdelay = 0;
- ulong delay;
- char *frpart;
+ struct udevice *dev;
+
+ printf("Device Index Driver\n");
+ printf("-------------------------------------\n");
+ for (uclass_first_device(UCLASS_MISC, &dev);
+ dev;
+ uclass_next_device(&dev)) {
+ printf("%-20s %5d %10s\n", dev->name, dev_seq(dev),
+ dev->driver->name);
+ }
- if (argc != 2)
- return CMD_RET_USAGE;
+ return 0;
+}
+
+static int do_misc_op(struct cmd_tbl *cmdtp, int flag,
+ int argc, char *const argv[], enum misc_op op)
+{
+ struct udevice *dev;
+ int offset;
+ void *buf;
+ int size;
+ int ret;
+
+ ret = uclass_get_device_by_name(UCLASS_MISC, argv[0], &dev);
+ if (ret) {
+ printf("Unable to find device %s\n", argv[0]);
+ return ret;
+ }
- delay = simple_strtoul(argv[1], NULL, 10) * CONFIG_SYS_HZ;
+ offset = hextoul(argv[1], NULL);
+ buf = (void *)hextoul(argv[2], NULL);
+ size = hextoul(argv[3], NULL);
- frpart = strchr(argv[1], '.');
+ if (op == MISC_OP_READ)
+ ret = misc_read(dev, offset, buf, size);
+ else
+ ret = misc_write(dev, offset, buf, size);
- if (frpart) {
- uint mult = CONFIG_SYS_HZ / 10;
- for (frpart++; *frpart != '\0' && mult > 0; frpart++) {
- if (*frpart < '0' || *frpart > '9') {
- mdelay = 0;
- break;
- }
- mdelay += (*frpart - '0') * mult;
- mult /= 10;
+ if (ret < 0) {
+ if (ret == -ENOSYS) {
+ printf("The device does not support %s\n",
+ misc_op_str[op]);
+ ret = 0;
}
+ } else {
+ if (ret == size)
+ ret = 0;
+ else
+ printf("Partially %s %d bytes\n", misc_op_str[op], ret);
}
- delay += mdelay;
-
- while (get_timer(start) < delay) {
- if (ctrlc())
- return (-1);
+ return ret;
+}
- udelay(100);
- }
+static int do_misc_read(struct cmd_tbl *cmdtp, int flag,
+ int argc, char *const argv[])
+{
+ return do_misc_op(cmdtp, flag, argc, argv, MISC_OP_READ);
+}
- return 0;
+static int do_misc_write(struct cmd_tbl *cmdtp, int flag,
+ int argc, char *const argv[])
+{
+ return do_misc_op(cmdtp, flag, argc, argv, MISC_OP_WRITE);
}
-U_BOOT_CMD(
- sleep , 2, 1, do_sleep,
- "delay execution for some time",
- "N\n"
- " - delay execution for N seconds (N is _decimal_ and can be\n"
- " fractional)"
-);
+static struct cmd_tbl misc_commands[] = {
+ U_BOOT_CMD_MKENT(list, 0, 1, do_misc_list, "", ""),
+ U_BOOT_CMD_MKENT(read, 4, 1, do_misc_read, "", ""),
+ U_BOOT_CMD_MKENT(write, 4, 1, do_misc_write, "", ""),
+};
-#ifdef CONFIG_CMD_TIMER
-static int do_timer(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+static int do_misc(struct cmd_tbl *cmdtp, int flag,
+ int argc, char *const argv[])
{
- static ulong start;
+ struct cmd_tbl *misc_cmd;
+ int ret;
- if (argc != 2)
+ if (argc < 2)
+ return CMD_RET_USAGE;
+ misc_cmd = find_cmd_tbl(argv[1], misc_commands,
+ ARRAY_SIZE(misc_commands));
+ argc -= 2;
+ argv += 2;
+ if (!misc_cmd || argc != misc_cmd->maxargs)
return CMD_RET_USAGE;
- if (!strcmp(argv[1], "start"))
- start = get_timer(0);
-
- if (!strcmp(argv[1], "get")) {
- ulong msecs = get_timer(start) * 1000 / CONFIG_SYS_HZ;
- printf("%ld.%03d\n", msecs / 1000, (int)(msecs % 1000));
- }
+ ret = misc_cmd->cmd(misc_cmd, flag, argc, argv);
- return 0;
+ return cmd_process_error(misc_cmd, ret);
}
U_BOOT_CMD(
- timer, 2, 1, do_timer,
- "access the system timer",
- "start - Reset the timer reference.\n"
- "timer get - Print the time since 'start'."
+ misc, 6, 1, do_misc,
+ "Access miscellaneous devices with MISC uclass driver APIs",
+ "list - list all miscellaneous devices\n"
+ "misc read name offset addr len - read `len' bytes starting at\n"
+ " `offset' of device `name'\n"
+ " to memory at `addr'\n"
+ "misc write name offset addr len - write `len' bytes starting at\n"
+ " `offset' of device `name'\n"
+ " from memory at `addr'"
);
-#endif
projects / platform / kernel / u-boot.git / blobdiff