diff options
| -rw-r--r-- | arch/arm/mach-tegra/tegra186/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra186/nvtboot_board.c | 54 |
2 files changed, 55 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra186/Makefile b/arch/arm/mach-tegra/tegra186/Makefile index 7f46a057bc..56f3378ece 100644 --- a/arch/arm/mach-tegra/tegra186/Makefile +++ b/arch/arm/mach-tegra/tegra186/Makefile @@ -4,5 +4,6 @@ obj-y += ../board186.o obj-y += cache.o +obj-y += nvtboot_board.o obj-y += nvtboot_ll.o obj-y += nvtboot_mem.o diff --git a/arch/arm/mach-tegra/tegra186/nvtboot_board.c b/arch/arm/mach-tegra/tegra186/nvtboot_board.c new file mode 100644 index 0000000000..1d78346f98 --- /dev/null +++ b/arch/arm/mach-tegra/tegra186/nvtboot_board.c @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2016, NVIDIA CORPORATION. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <fdt_support.h> +#include <fdtdec.h> +#include <asm/arch/tegra.h> + +extern unsigned long nvtboot_boot_x0; + +/* + * Attempt to use /chosen/nvidia,ether-mac in the nvtboot DTB to U-Boot's + * ethaddr environment variable if possible. + */ +static int set_ethaddr_from_nvtboot(void) +{ + const void *nvtboot_blob = (void *)nvtboot_boot_x0; + int ret, node, len; + const u32 *prop; + + /* Already a valid address in the environment? If so, keep it */ + if (getenv("ethaddr")) + return 0; + + node = fdt_path_offset(nvtboot_blob, "/chosen"); + if (node < 0) { + printf("Can't find /chosen node in nvtboot DTB\n"); + return node; + } + prop = fdt_getprop(nvtboot_blob, node, "nvidia,ether-mac", &len); + if (!prop) { + printf("Can't find nvidia,ether-mac property in nvtboot DTB\n"); + return -ENOENT; + } + + ret = setenv("ethaddr", (void *)prop); + if (ret) { + printf("Failed to set ethaddr from nvtboot DTB: %d\n", ret); + return ret; + } + + return 0; +} + +int tegra_soc_board_init_late(void) +{ + /* Ignore errors here; not all cases care about Ethernet addresses */ + set_ethaddr_from_nvtboot(); + + return 0; +} |