From: Oleksij Rempel <o.rempel@pengutronix.de> To: barebox@lists.infradead.org Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>, Oleksij Rempel <o.rempel@pengutronix.de> Subject: [PATCH v3 1/5] common: add $global.serial_number with device tree fixup Date: Wed, 27 Apr 2022 14:14:09 +0200 [thread overview] Message-ID: <20220427121413.1887458-2-o.rempel@pengutronix.de> (raw) In-Reply-To: <20220427121413.1887458-1-o.rempel@pengutronix.de> From: Ahmad Fatoum <a.fatoum@pengutronix.de> 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> --- common/Kconfig | 5 +++++ common/misc.c | 16 ++++++++++++++++ common/oftree.c | 9 +++++++++ include/common.h | 3 +++ 4 files changed, 33 insertions(+) diff --git a/common/Kconfig b/common/Kconfig index f7a6a96e87..d08302a573 100644 --- a/common/Kconfig +++ b/common/Kconfig @@ -1066,6 +1066,11 @@ config MACHINE_ID Note: if no hashable information is available no machine id will be passed to the kernel. +config SERIAL_NUMBER_FIXUP + bool "fix up board serial number" + help + fixup serial number supplied by board code info device tree + config SYSTEMD_OF_WATCHDOG bool "inform devicetree-enabled kernel of used watchdog" depends on WATCHDOG && OFTREE && FLEXIBLE_BOOTARGS 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..c6d75055cc 100644 --- a/common/oftree.c +++ b/common/oftree.c @@ -207,6 +207,15 @@ static int of_fixup_bootargs(struct device_node *root, void *unused) int instance = reset_source_get_instance(); struct device_d *dev; + if (IS_ENABLED(CONFIG_SERIAL_NUMBER_FIXUP)) { + const char *serialno; + + serialno = getenv("global.serial_number"); + if (serialno) + of_property_write_string(root, "serial-number", serialno); + + } + node = of_create_node(root, "/chosen"); if (!node) return -ENOMEM; diff --git a/include/common.h b/include/common.h index 4167d4676e..967502a7ab 100644 --- a/include/common.h +++ b/include/common.h @@ -126,4 +126,7 @@ const char *barebox_get_hostname(void); void barebox_set_hostname(const char *); void barebox_set_hostname_no_overwrite(const char *); +const char *barebox_get_serial_number(void); +void barebox_set_serial_number(const char *); + #endif /* __COMMON_H_ */ -- 2.30.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
next prev parent reply other threads:[~2022-04-27 12:16 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-04-27 12:14 [PATCH v3 0/5] add different OF board fixups Oleksij Rempel 2022-04-27 12:14 ` Oleksij Rempel [this message] 2022-04-28 12:59 ` [PATCH v3 1/5] common: add $global.serial_number with device tree fixup Jules Maselbas 2022-04-28 13:16 ` Ulrich Ölmann 2022-04-29 4:52 ` Oleksij Rempel 2022-04-29 7:35 ` Sascha Hauer 2022-04-27 12:14 ` [PATCH v3 2/5] ARM: boards: protonic-imx6: make use of barebox_set_serial_number() Oleksij Rempel 2022-04-27 12:14 ` [PATCH v3 3/5] of: add generic of_fixup_machine_compatible() Oleksij Rempel 2022-04-29 8:07 ` Sascha Hauer 2022-04-27 12:14 ` [PATCH v3 4/5] ARM: boards: skov-imx6: make use of of_fixup_machine_compatible() Oleksij Rempel 2022-04-27 12:14 ` [PATCH v3 5/5] ARM: boards: protonic-imx6: add HW revision specific machine compatible Oleksij Rempel
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