Add CONFIG_CONSOLE_WRITEONLY to configure the consoles as write-only,
making the bootup effectively non-interactive.
Signed-off-by: Rouven Czerwinski <r.czerwinski@xxxxxxxxxxxxxx>
---
common/Kconfig | 11 +++++++++++
common/console.c | 2 +-
common/console_simple.c | 5 ++++-
common/startup.c | 5 +++++
4 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/common/Kconfig b/common/Kconfig
index 1a5bb53182..abf9b7bd73 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -775,6 +775,17 @@ config CONSOLE_ALLOW_COLOR
compile time default for colored console output. After boot it
can be controlled using global.allow_color.
+config CONSOLE_WRITEONLY
+ prompt "Enable writeonly consoles (non-interactive)"
+ depends on CONSOLE_FULL || CONSOLE_SIMPLE
+ bool
+ help
+ If enabled, all consoles are configured to be write-only, meaning
+ they will not read any input, making the console effectively
+ non-interactive.
+ CAUTION: this will also disable input devices, since they are registered as
+ consoles.
+
config PBL_CONSOLE
depends on PBL_IMAGE
depends on !CONSOLE_NONE
diff --git a/common/console.c b/common/console.c
index 3375ecb7e5..fb26886f8c 100644
--- a/common/console.c
+++ b/common/console.c
@@ -93,7 +93,7 @@ int console_set_active(struct console_device *cdev, unsigned flag)
{
int ret;
- if (!cdev->getc)
+ if (!cdev->getc || IS_ENABLED(CONFIG_CONSOLE_WRITEONLY))
flag &= ~CONSOLE_STDIN;
if (!cdev->putc)
flag &= ~(CONSOLE_STDOUT | CONSOLE_STDERR);
diff --git a/common/console_simple.c b/common/console_simple.c
index 42224842c5..75257c7b08 100644
--- a/common/console_simple.c
+++ b/common/console_simple.c
@@ -92,7 +92,10 @@ int console_register(struct console_device *newcdev)
newcdev->setbrg(newcdev, newcdev->baudrate);
}
- newcdev->f_active = CONSOLE_STDIN | CONSOLE_STDOUT | CONSOLE_STDERR;
+ if (IS_ENABLED(CONFIG_CONSOLE_WRITEONLY))
+ newcdev->f_active = CONSOLE_STDOUT | CONSOLE_STDERR;
+ else
+ newcdev->f_active = CONSOLE_STDIN | CONSOLE_STDOUT | CONSOLE_STDERR;
barebox_banner();
diff --git a/common/startup.c b/common/startup.c
index ea7ce6b8da..d7bf99df14 100644
--- a/common/startup.c
+++ b/common/startup.c
@@ -253,6 +253,11 @@ enum autoboot_state do_autoboot_countdown(void)
menu_exists = stat(MENUFILE, &s) == 0;
+ if (IS_ENABLED(CONFIG_CONSOLE_WRITEONLY)) {
+ printf("\nNon-interactive console, booting system\n");
+ return autoboot_state = AUTOBOOT_BOOT;
+ }
+
if (menu_exists) {
printf("\nHit m for menu or %s to stop autoboot: ",
global_autoboot_abort_keys[global_autoboot_abort_key]);
--
2.28.0
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