boot -m -t 3 already opens a boot menu with a countdown of 3 seconds
before selecting the first element. So far, only way to influence
preselection was shifting around boot entries, so they are iterated over
differently. Add a new -M option that works analogously to -m, but
takes an integer index of the boot menu entry to preselect. This allows
simple customizable interactive boots:
#!/bin/sh
boot -M "$nv.bootmenu_default" -t 3 mmc0.0
With mmc0.0 containing multiple bootloader spec files that would be iterated
over in lexical order. The index is 1-based like the index displayed in
the boot menu.
Signed-off-by: Ahmad Fatoum <ahmad@xxxxxx>
---
For lexically ordered bootspec files, following series is required:
https://lore.barebox.org/barebox/20220724184807.2123459-1-a.fatoum@xxxxxxxxxxxxxx/T/#t
---
commands/boot.c | 18 +++++++++++++++---
common/boot.c | 10 +++++++++-
include/boot.h | 2 +-
3 files changed, 25 insertions(+), 5 deletions(-)
diff --git a/commands/boot.c b/commands/boot.c
index 18f4e36ec733..485559bc46b8 100644
--- a/commands/boot.c
+++ b/commands/boot.c
@@ -28,13 +28,14 @@ static int do_boot(int argc, char *argv[])
char *freep = NULL;
int opt, ret = 0, do_list = 0, do_menu = 0;
int dryrun = 0, verbose = 0, timeout = -1;
+ unsigned default_menu_entry = 0;
struct bootentries *entries;
struct bootentry *entry;
void *handle;
const char *name;
char *(*next)(void *);
- while ((opt = getopt(argc, argv, "vldmt:w:")) > 0) {
+ while ((opt = getopt(argc, argv, "vldmM:t:w:")) > 0) {
switch (opt) {
case 'v':
verbose++;
@@ -45,6 +46,16 @@ static int do_boot(int argc, char *argv[])
case 'd':
dryrun = 1;
break;
+ case 'M':
+ /* To simplify scripting, an empty string is treated as 1 */
+ if (*optarg == '\0') {
+ default_menu_entry = 1;
+ } else {
+ ret = kstrtouint(optarg, 0, &default_menu_entry);
+ if (ret)
+ return ret;
+ }
+ fallthrough;
case 'm':
do_menu = 1;
break;
@@ -104,7 +115,7 @@ static int do_boot(int argc, char *argv[])
if (do_list)
bootsources_list(entries);
else if (do_menu)
- bootsources_menu(entries, timeout);
+ bootsources_menu(entries, default_menu_entry, timeout);
ret = 0;
out:
@@ -136,6 +147,7 @@ BAREBOX_CMD_HELP_OPT ("-v","Increase verbosity")
BAREBOX_CMD_HELP_OPT ("-d","Dryrun. See what happens but do no actually boot")
BAREBOX_CMD_HELP_OPT ("-l","List available boot sources")
BAREBOX_CMD_HELP_OPT ("-m","Show a menu with boot options")
+BAREBOX_CMD_HELP_OPT ("-M INDEX","Show a menu with boot options with entry INDEX preselected")
BAREBOX_CMD_HELP_OPT ("-w SECS","Start watchdog with timeout SECS before booting")
BAREBOX_CMD_HELP_OPT ("-t SECS","specify timeout in SECS")
BAREBOX_CMD_HELP_END
@@ -143,7 +155,7 @@ BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(boot)
.cmd = do_boot,
BAREBOX_CMD_DESC("boot from script, device, ...")
- BAREBOX_CMD_OPTS("[-vdlmwt] [BOOTSRC...]")
+ BAREBOX_CMD_OPTS("[-vdlmMwt] [BOOTSRC...]")
BAREBOX_CMD_GROUP(CMD_GRP_BOOT)
BAREBOX_CMD_HELP(cmd_boot_help)
BAREBOX_CMD_END
diff --git a/common/boot.c b/common/boot.c
index 8220b8d3fbd7..52b03eb64d2e 100644
--- a/common/boot.c
+++ b/common/boot.c
@@ -313,10 +313,12 @@ int bootentry_create_from_name(struct bootentries *bootentries,
/*
* bootsources_menu - show a menu from an array of names
*/
-void bootsources_menu(struct bootentries *bootentries, int timeout)
+void bootsources_menu(struct bootentries *bootentries,
+ unsigned default_entry, int timeout)
{
struct bootentry *entry;
struct menu_entry *back_entry;
+ int i = 1;
if (!IS_ENABLED(CONFIG_MENU)) {
pr_warn("no menu support available\n");
@@ -328,6 +330,9 @@ void bootsources_menu(struct bootentries *bootentries, int timeout)
entry->me.display = xstrdup(entry->title);
entry->me.action = bootsource_action;
menu_add_entry(bootentries->menu, &entry->me);
+
+ if (i++ == default_entry)
+ bootentries->menu->selected = &entry->me;
}
back_entry = xzalloc(sizeof(*back_entry));
@@ -336,6 +341,9 @@ void bootsources_menu(struct bootentries *bootentries, int timeout)
back_entry->non_re_ent = 1;
menu_add_entry(bootentries->menu, back_entry);
+ if (i == default_entry)
+ bootentries->menu->selected = back_entry;
+
if (timeout >= 0)
bootentries->menu->auto_select = timeout;
diff --git a/include/boot.h b/include/boot.h
index 3d5dd1cb6e2c..c9e8c0fd0d87 100644
--- a/include/boot.h
+++ b/include/boot.h
@@ -50,7 +50,7 @@ struct bootentries *bootentries_alloc(void);
void bootentries_free(struct bootentries *bootentries);
int bootentry_create_from_name(struct bootentries *bootentries,
const char *name);
-void bootsources_menu(struct bootentries *bootentries, int timeout);
+void bootsources_menu(struct bootentries *bootentries, unsigned default_entry, int timeout);
void bootsources_list(struct bootentries *bootentries);
int boot_entry(struct bootentry *be, int verbose, int dryrun);
--
2.34.1
