1 From 86cc911aaa958fedf2ea9cb04b4af17f5357815d Mon Sep 17 00:00:00 2001
2 From: Anton Gerasimov <anton.gerasimov@here.com>
3 Date: Fri, 1 Feb 2019 14:39:48 +0100
4 Subject: [PATCH] board: raspberrypi: add serial and revision to the device
7 Raspberry Pi bootloader adds this node to fdt, but if u-boot script
8 doesn't reuse the tree provided by it, this information is lost.
10 Revision and serial are displayed in /proc/cpuinfo after boot.
12 Signed-off-by: Anton Gerasimov <anton.gerasimov@here.com>
14 board/raspberrypi/rpi/rpi.c | 31 +++++++++++++++++++++++++++++--
15 1 file changed, 29 insertions(+), 2 deletions(-)
17 diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
18 index 35f5939552..114178397e 100644
19 --- a/board/raspberrypi/rpi/rpi.c
20 +++ b/board/raspberrypi/rpi/rpi.c
21 @@ -241,6 +241,8 @@ static uint32_t rev_scheme;
22 static uint32_t rev_type;
23 static const struct rpi_model *model;
28 static struct mm_region bcm2837_mem_map[] = {
30 @@ -384,8 +386,8 @@ static void set_serial_number(void)
34 - snprintf(serial_string, sizeof(serial_string), "%016llx",
35 - msg->get_board_serial.body.resp.serial);
36 + serial = msg->get_board_serial.body.resp.serial;
37 + snprintf(serial_string, sizeof(serial_string), "%016llx", serial);
38 env_set("serial#", serial_string);
41 @@ -478,6 +480,29 @@ void *board_fdt_blob_setup(void)
42 return (void *)fw_dtb_pointer;
45 +static int ft_add_revision_info(void *blob) {
49 + off = fdt_subnode_offset(blob, 0, "system");
52 + off = fdt_add_subnode(blob, 0, "system");
57 + ret = fdt_setprop_u64(blob, off, "linux,serial", serial);
61 + ret = fdt_setprop_u32(blob, off, "linux,revision", revision);
68 int ft_board_setup(void *blob, bd_t *bd)
71 @@ -487,6 +512,8 @@ int ft_board_setup(void *blob, bd_t *bd)
73 lcd_dt_simplefb_add_node(blob);
75 + ft_add_revision_info(blob);
77 #ifdef CONFIG_EFI_LOADER
78 /* Reserve the spin table */
79 efi_add_memory_map(0, 1, EFI_RESERVED_MEMORY_TYPE, 0);