From d42e7964d9ca756bced0c0e7e879ed06edb4b6cb Mon Sep 17 00:00:00 2001 From: Pascal Vizeli Date: Fri, 27 Nov 2020 17:28:21 +0100 Subject: [PATCH] meson: Add soc_rev to environment Add SoC revision to environment. This can be useful to select the correct device tree at runtime (N2/N2+). Signed-off-by: Pascal Vizeli Signed-off-by: Stefan Agner Reviewed-by: Neil Armstrong Signed-off-by: Neil Armstrong --- arch/arm/include/asm/arch-meson/boot.h | 4 ++++ arch/arm/mach-meson/board-info.c | 12 ++++++++++++ board/amlogic/odroid-n2/odroid-n2.c | 5 +++++ 3 files changed, 21 insertions(+) diff --git a/arch/arm/include/asm/arch-meson/boot.h b/arch/arm/include/asm/arch-meson/boot.h index a90fe55081..c67d12d06c 100644 --- a/arch/arm/include/asm/arch-meson/boot.h +++ b/arch/arm/include/asm/arch-meson/boot.h @@ -7,6 +7,8 @@ #ifndef __MESON_BOOT_H__ #define __MESON_BOOT_H__ +#include + /* Boot device */ #define BOOT_DEVICE_RESERVED 0 #define BOOT_DEVICE_EMMC 1 @@ -17,4 +19,6 @@ int meson_get_boot_device(void); +int meson_get_soc_rev(char *buff, size_t buff_len); + #endif /* __MESON_BOOT_H__ */ diff --git a/arch/arm/mach-meson/board-info.c b/arch/arm/mach-meson/board-info.c index a0bcf38f29..90e7dfaa3c 100644 --- a/arch/arm/mach-meson/board-info.c +++ b/arch/arm/mach-meson/board-info.c @@ -187,3 +187,15 @@ int show_board_info(void) return 0; } + +int meson_get_soc_rev(char *buff, size_t buff_len) +{ + unsigned int socinfo; + + socinfo = get_socinfo(); + if (!socinfo) + return -1; + + /* Write SoC info */ + return snprintf(buff, buff_len, "%x", socinfo_to_minor(socinfo)); +} diff --git a/board/amlogic/odroid-n2/odroid-n2.c b/board/amlogic/odroid-n2/odroid-n2.c index caf7fd6810..dc0d933a39 100644 --- a/board/amlogic/odroid-n2/odroid-n2.c +++ b/board/amlogic/odroid-n2/odroid-n2.c @@ -12,6 +12,7 @@ #include #include #include +#include #define EFUSE_MAC_OFFSET 20 #define EFUSE_MAC_SIZE 12 @@ -23,6 +24,10 @@ int misc_init_r(void) char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3]; ssize_t len; + if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG) && + meson_get_soc_rev(tmp, sizeof(tmp)) > 0) + env_set("soc_rev", tmp); + meson_eth_init(PHY_INTERFACE_MODE_RGMII, 0); if (!eth_env_get_enetaddr("ethaddr", mac_addr)) { -- 2.39.5