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https://github.com/AsahiLinux/u-boot
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4e8bc21170
This command currently activates devices as it lists them. This is not desirable since it changes the system state. Fix it and avoid printing a newline if there are no devices in a uclass. Signed-off-by: Simon Glass <sjg@chromium.org>
152 lines
3.1 KiB
C
152 lines
3.1 KiB
C
/*
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* Copyright (c) 2013 Google, Inc
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*
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* (C) Copyright 2012
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* Marek Vasut <marex@denx.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <malloc.h>
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#include <errno.h>
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#include <asm/io.h>
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#include <dm/root.h>
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#include <dm/test.h>
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#include <dm/uclass-internal.h>
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/**
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* dm_display_line() - Display information about a single device
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*
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* Displays a single line of information with an option prefix
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*
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* @dev: Device to display
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* @buf: Prefix to display at the start of the line
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*/
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static void dm_display_line(struct udevice *dev, char *buf)
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{
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printf("%s- %c %s @ %08lx", buf,
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dev->flags & DM_FLAG_ACTIVATED ? '*' : ' ',
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dev->name, (ulong)map_to_sysmem(dev));
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puts("\n");
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}
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static int display_succ(struct udevice *in, char *buf)
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{
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int len;
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int ip = 0;
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char local[16];
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struct udevice *pos, *n, *prev = NULL;
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dm_display_line(in, buf);
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if (list_empty(&in->child_head))
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return 0;
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len = strlen(buf);
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strncpy(local, buf, sizeof(local));
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snprintf(local + len, 2, "|");
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if (len && local[len - 1] == '`')
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local[len - 1] = ' ';
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list_for_each_entry_safe(pos, n, &in->child_head, sibling_node) {
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if (ip++)
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display_succ(prev, local);
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prev = pos;
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}
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snprintf(local + len, 2, "`");
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display_succ(prev, local);
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return 0;
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}
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static int dm_dump(struct udevice *dev)
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{
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if (!dev)
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return -EINVAL;
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return display_succ(dev, "");
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}
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static int do_dm_dump_all(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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struct udevice *root;
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root = dm_root();
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printf("ROOT %08lx\n", (ulong)map_to_sysmem(root));
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return dm_dump(root);
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}
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static int do_dm_dump_uclass(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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struct uclass *uc;
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int ret;
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int id;
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for (id = 0; id < UCLASS_COUNT; id++) {
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struct udevice *dev;
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ret = uclass_get(id, &uc);
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if (ret)
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continue;
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printf("uclass %d: %s\n", id, uc->uc_drv->name);
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if (list_empty(&uc->dev_head))
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continue;
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list_for_each_entry(dev, &uc->dev_head, uclass_node) {
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dm_display_line(dev, "");
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}
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puts("\n");
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}
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return 0;
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}
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#ifdef CONFIG_DM_TEST
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static int do_dm_test(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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return dm_test_main();
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}
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#define TEST_HELP "\ndm test Run tests"
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#else
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#define TEST_HELP
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#endif
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static cmd_tbl_t test_commands[] = {
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U_BOOT_CMD_MKENT(tree, 0, 1, do_dm_dump_all, "", ""),
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U_BOOT_CMD_MKENT(uclass, 1, 1, do_dm_dump_uclass, "", ""),
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#ifdef CONFIG_DM_TEST
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U_BOOT_CMD_MKENT(test, 1, 1, do_dm_test, "", ""),
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#endif
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};
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static int do_dm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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cmd_tbl_t *test_cmd;
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int ret;
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if (argc != 2)
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return CMD_RET_USAGE;
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test_cmd = find_cmd_tbl(argv[1], test_commands,
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ARRAY_SIZE(test_commands));
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argc -= 2;
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argv += 2;
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if (!test_cmd || argc > test_cmd->maxargs)
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return CMD_RET_USAGE;
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ret = test_cmd->cmd(test_cmd, flag, argc, argv);
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return cmd_process_error(test_cmd, ret);
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}
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U_BOOT_CMD(
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dm, 2, 1, do_dm,
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"Driver model low level access",
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"tree Dump driver model tree ('*' = activated)\n"
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"dm uclass Dump list of instances for each uclass"
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TEST_HELP
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);
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