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// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: © 2019 Michael Tretter <m.tretter@pengutronix.de>, Pengutronix
#include <command.h>
#include <common.h>
#include <environment.h>
#include <fdt.h>
#include <firmware.h>
#include <fs.h>
#include <getopt.h>
#include <libfile.h>
#include <of.h>
#include <linux/clk.h>
static int do_of_overlay(int argc, char *argv[])
{
int ret;
struct device_node *overlay;
bool live_tree = false;
int opt;
while ((opt = getopt(argc, argv, "l")) > 0) {
switch (opt) {
case 'l':
live_tree = true;
break;
}
}
if (argc != optind + 1)
return COMMAND_ERROR_USAGE;
if (live_tree && !IS_ENABLED(CONFIG_OF_OVERLAY_LIVE)) {
printf("Support for live tree overlays is disabled. Enable CONFIG_OF_OVERLAY_LIVE\n");
return 1;
}
overlay = of_read_file(argv[optind]);
if (IS_ERR(overlay))
return PTR_ERR(overlay);
if (live_tree) {
ret = of_overlay_apply_tree(of_get_root_node(), overlay);
if (ret)
goto err;
of_clk_init();
of_probe();
} else {
ret = of_register_overlay(overlay);
}
if (ret) {
printf("cannot apply oftree overlay: %s\n", strerror(-ret));
goto err;
}
return 0;
err:
of_delete_node(overlay);
return ret;
}
BAREBOX_CMD_HELP_START(of_overlay)
BAREBOX_CMD_HELP_TEXT("Register a device tree overlay file (dtbo) with barebox.")
BAREBOX_CMD_HELP_TEXT("By default the overlay is registered as a fixup and the")
BAREBOX_CMD_HELP_TEXT("overlay will then be applied to the Linux device tree.")
BAREBOX_CMD_HELP_TEXT("With -l given the overlay is applied to the barebox live")
BAREBOX_CMD_HELP_TEXT("tree instead. This involves probing new devices added in")
BAREBOX_CMD_HELP_TEXT("the overlay file.")
BAREBOX_CMD_HELP_TEXT("")
BAREBOX_CMD_HELP_TEXT("Options:")
BAREBOX_CMD_HELP_OPT("-l", "apply to barebox live tree")
BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(of_overlay)
.cmd = do_of_overlay,
BAREBOX_CMD_DESC("register device tree overlay")
BAREBOX_CMD_OPTS("[-l] FILE")
BAREBOX_CMD_GROUP(CMD_GRP_MISC)
BAREBOX_CMD_HELP(cmd_of_overlay_help)
BAREBOX_CMD_END
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