[PATCH v2 1/8] board: schneider: rzn1-snarc: set serial number
Ralph Siemsen <[email protected]>
| Newsgroups | gmane.comp.boot-loaders.u-boot |
|---|---|
| Message-ID | <20260814-rzn1-2026-10-v2-1-56b6acef0439__23198.1755046704$1786732760$gmane$org@linaro.org> |
Obtain the board serial number from OTP. Make it visible in the 'serial#' environment variable, and also in DFU/fastboot/UMS mode. This helps to distinguish multiple boards connected to the same LAVA controller. Signed-off-by: Ralph Siemsen <[email protected]> --- board/schneider/rzn1-snarc/rzn1.c | 25 +++++++++++++++++++++++++ include/configs/rzn1-snarc.h | 5 +++++ 2 files changed, 30 insertions(+) diff --git a/board/schneider/rzn1-snarc/rzn1.c b/board/schneider/rzn1-snarc/rzn1.c index e1d5b5b0497..38aa2ed9d4e 100644 --- a/board/schneider/rzn1-snarc/rzn1.c +++ b/board/schneider/rzn1-snarc/rzn1.c @@ -1,11 +1,21 @@ // SPDX-License-Identifier: GPL-2.0+ +#include <asm/io.h> +#include <configs/rzn1-snarc.h> #include <dm.h> +#include <env.h> +#include <g_dnl.h> #include <ram.h> #include <asm/global_data.h> DECLARE_GLOBAL_DATA_PTR; +static inline uint32_t hosted_readl(uint32_t addr) +{ + /* No hypervisor yet, just do a direct read */ + return readl(addr); +} + int board_init(void) { gd->bd->bi_boot_params = gd->ram_base + 0x100; @@ -13,6 +23,21 @@ int board_init(void) return 0; } +int board_late_init(void) +{ + char serial_string[32]; + + /* Obtain serial number from OTP */ + snprintf(serial_string, sizeof(serial_string), + "LCES2-0x%08x%08x", + hosted_readl(RZN1_SERIAL_LOW), + hosted_readl(RZN1_SERIAL_HIGH)); + env_set("serial#", serial_string); + g_dnl_set_serialnumber((char *)serial_string); + + return 0; +} + int dram_init(void) { struct udevice *dev; diff --git a/include/configs/rzn1-snarc.h b/include/configs/rzn1-snarc.h index 9fee2ece54a..75fada671af 100644 --- a/include/configs/rzn1-snarc.h +++ b/include/configs/rzn1-snarc.h @@ -10,4 +10,9 @@ #define CFG_SYS_INIT_RAM_ADDR 0x20000000 #define CFG_SYS_INIT_RAM_SIZE (1 * 1024 * 1024) +/* One-time programmable OTP */ +#define RZN1_OTP_BASE 0x40007000 +#define RZN1_SERIAL_LOW (RZN1_OTP_BASE + 0x08) +#define RZN1_SERIAL_HIGH (RZN1_OTP_BASE + 0x0c) + #endif /* __RZN1_SNARC_H */ -- 2.55.0