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| author | Alexandre Pereira da Silva <aletes.xgr@gmail.com> | 2012-07-20 14:01:51 +0200 |
|---|---|---|
| committer | Roland Stigge <stigge@antcom.de> | 2012-07-20 14:01:51 +0200 |
| commit | e39942f527fb02b73236d872d22c1b6b8335266c (patch) | |
| tree | 7bda3b7b6601a381e8d413e3a82a2de9d9248c04 /arch/arm/mach-lpc32xx | |
| parent | 8ba85f8bffdfbac98dac8630406f7d020103db70 (diff) | |
| download | linux-e39942f527fb02b73236d872d22c1b6b8335266c.tar.gz linux-e39942f527fb02b73236d872d22c1b6b8335266c.tar.bz2 linux-e39942f527fb02b73236d872d22c1b6b8335266c.zip | |
ARM: LPC32xx: Set system serial based on cpu unique id
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 <aletes.xgr@gmail.com>
Signed-off-by: Roland Stigge <stigge@antcom.de>
Diffstat (limited to 'arch/arm/mach-lpc32xx')
| -rw-r--r-- | arch/arm/mach-lpc32xx/common.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/arm/mach-lpc32xx/common.c b/arch/arm/mach-lpc32xx/common.c index 5c96057b6d78..a48dc2dec485 100644 --- a/arch/arm/mach-lpc32xx/common.c +++ b/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 char *cmd) ; } -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(void) 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); |