summaryrefslogtreecommitdiffstats
path: root/common
diff options
context:
space:
mode:
authorAhmad Fatoum <a.fatoum@pengutronix.de>2022-05-03 11:12:16 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2022-05-05 09:15:13 +0200
commitf6756e9ce6f26dc22506e25bd5cf1a4f6a173636 (patch)
tree31db79dd7986bddcfc67bcb6cd136689f0380c4c /common
parent2d7b49c1e7ee5ff5cd67be3ebf100d7b3c9ae293 (diff)
downloadbarebox-f6756e9ce6f26dc22506e25bd5cf1a4f6a173636.tar.gz
barebox-f6756e9ce6f26dc22506e25bd5cf1a4f6a173636.tar.xz
common: add $global.serial_number with device tree fixup
This new variable can be set by boards from C code or from the environment to change the serial number fixed up into the kernel device tree. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Link: https://lore.barebox.org/20220503091220.3871612-2-o.rempel@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common')
-rw-r--r--common/misc.c16
-rw-r--r--common/oftree.c5
2 files changed, 21 insertions, 0 deletions
diff --git a/common/misc.c b/common/misc.c
index 226635f0d4..3b3bc05bfd 100644
--- a/common/misc.c
+++ b/common/misc.c
@@ -149,6 +149,7 @@ EXPORT_SYMBOL(barebox_get_model);
BAREBOX_MAGICVAR(global.model, "Product name of this hardware");
static char *hostname;
+static char *serial_number;
/*
* The hostname is supposed to be the shortname of a board. It should
@@ -179,6 +180,21 @@ EXPORT_SYMBOL(barebox_set_hostname_no_overwrite);
BAREBOX_MAGICVAR(global.hostname,
"shortname of the board. Also used as hostname for DHCP requests");
+void barebox_set_serial_number(const char *__serial_number)
+{
+ globalvar_add_simple_string("serial_number", &serial_number);
+
+ free(serial_number);
+ serial_number = xstrdup(__serial_number);
+}
+
+const char *barebox_get_serial_number(void)
+{
+ return serial_number;
+}
+
+BAREBOX_MAGICVAR(global.serial_number, "Board serial number");
+
void __noreturn panic(const char *fmt, ...)
{
va_list args;
diff --git a/common/oftree.c b/common/oftree.c
index bce0ff09d6..51f825c3f3 100644
--- a/common/oftree.c
+++ b/common/oftree.c
@@ -206,6 +206,11 @@ static int of_fixup_bootargs(struct device_node *root, void *unused)
int err;
int instance = reset_source_get_instance();
struct device_d *dev;
+ const char *serialno;
+
+ serialno = barebox_get_serial_number();
+ if (serialno)
+ of_property_write_string(root, "serial-number", serialno);
node = of_create_node(root, "/chosen");
if (!node)