From: Alexandre Pereira da Silva <[email protected]> LPC32xx SoC has a 128 bits unique id that can be used as a system serial number, if none has been provided by atags or dt.
Signed-off-by: Alexandre Pereira da Silva <[email protected]> Signed-off-by: Roland Stigge <[email protected]> --- arch/arm/mach-lpc32xx/common.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) --- linux-2.6.orig/arch/arm/mach-lpc32xx/common.c +++ linux-2.6/arch/arm/mach-lpc32xx/common.c @@ -26,6 +26,7 @@ #include <linux/io.h> #include <asm/mach/map.h> +#include <asm/system_info.h> #include <mach/hardware.h> #include <mach/platform.h> @@ -224,7 +225,7 @@ void lpc23xx_restart(char mode, const ch ; } -static int __init lpc32xx_display_uid(void) +static int __init lpc32xx_check_uid(void) { u32 uid[4]; @@ -233,6 +234,11 @@ static int __init lpc32xx_display_uid(vo printk(KERN_INFO "LPC32XX unique ID: %08x%08x%08x%08x\n", uid[3], uid[2], uid[1], uid[0]); + if (!system_serial_low && !system_serial_high) { + system_serial_low = uid[0]; + system_serial_high = uid[1]; + } + return 1; } -arch_initcall(lpc32xx_display_uid); +arch_initcall(lpc32xx_check_uid); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
