Gets propagated into the device tree and then into /proc/cpuinfo where users often expect it.

Signed-off-by: Lubomir Rintel lkundrak@v3.sk --- arch/arm/mach-bcm283x/include/mach/mbox.h | 11 +++++++++++ board/raspberrypi/rpi/rpi.c | 33 +++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+)

diff --git a/arch/arm/mach-bcm283x/include/mach/mbox.h b/arch/arm/mach-bcm283x/include/mach/mbox.h index 0039d09..072ff2d 100644 --- a/arch/arm/mach-bcm283x/include/mach/mbox.h +++ b/arch/arm/mach-bcm283x/include/mach/mbox.h @@ -150,6 +150,17 @@ struct bcm2835_mbox_tag_get_mac_address { } body; };

+#define BCM2835_MBOX_TAG_GET_BOARD_SERIAL 0x00010004 + +struct bcm2835_mbox_tag_get_board_serial { + struct bcm2835_mbox_tag_hdr tag_hdr; + union { + struct __packed { + u64 serial; + } resp; + } body; +}; + #define BCM2835_MBOX_TAG_GET_ARM_MEMORY 0x00010005

struct bcm2835_mbox_tag_get_arm_mem { diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c index 86a2232..7a75d43 100644 --- a/board/raspberrypi/rpi/rpi.c +++ b/board/raspberrypi/rpi/rpi.c @@ -5,6 +5,7 @@ */

#include <common.h> +#include <inttypes.h> #include <config.h> #include <dm.h> #include <fdt_support.h> @@ -57,6 +58,12 @@ struct msg_get_board_rev { u32 end_tag; };

+struct msg_get_board_serial { + struct bcm2835_mbox_hdr hdr; + struct bcm2835_mbox_tag_get_board_serial get_board_serial; + u32 end_tag; +}; + struct msg_get_mac_address { struct bcm2835_mbox_hdr hdr; struct bcm2835_mbox_tag_get_mac_address get_mac_address; @@ -288,6 +295,30 @@ static void set_board_info(void) } #endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */

+static void set_serial_number(void) +{ + ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1); + int ret; + char serial_string[17] = { 0 }; + + if (getenv("serial#")) + return; + + BCM2835_MBOX_INIT_HDR(msg); + BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL); + + ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr); + if (ret) { + printf("bcm2835: Could not query board serial\n"); + /* Ignore error; not critical */ + return; + } + + snprintf(serial_string, sizeof(serial_string), "%016" PRIx64, + msg->get_board_serial.body.resp.serial); + setenv("serial#", serial_string); +} + int misc_init_r(void) { set_fdtfile(); @@ -295,6 +326,8 @@ int misc_init_r(void) #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG set_board_info(); #endif + set_serial_number(); + return 0; }