diff options
Diffstat (limited to 'board/toradex/colibri_imx6/do_fuse.c')
-rw-r--r-- | board/toradex/colibri_imx6/do_fuse.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/board/toradex/colibri_imx6/do_fuse.c b/board/toradex/colibri_imx6/do_fuse.c new file mode 100644 index 00000000000..cff07e9e69c --- /dev/null +++ b/board/toradex/colibri_imx6/do_fuse.c @@ -0,0 +1,98 @@ +/* + * Copyright (C) 2014-2016, Toradex AG + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * Helpers for i.MX OTP fusing during module production +*/ + +#include <common.h> +#ifndef CONFIG_SPL_BUILD +#include <console.h> +#include <fuse.h> + +static int mfgr_fuse(void) +{ + unsigned val, val6; + + fuse_sense(0, 5, &val); + printf("Fuse 0, 5: %8x\n", val); + fuse_sense(0, 6, &val6); + printf("Fuse 0, 6: %8x\n", val6); + fuse_sense(4, 3, &val); + printf("Fuse 4, 3: %8x\n", val); + fuse_sense(4, 2, &val); + printf("Fuse 4, 2: %8x\n", val); + if (val6 & 0x10) { + puts("BT_FUSE_SEL already fused, will do nothing\n"); + return CMD_RET_FAILURE; + } + /* boot cfg */ + fuse_prog(0, 5, 0x00005072); + /* BT_FUSE_SEL */ + fuse_prog(0, 6, 0x00000010); + return CMD_RET_SUCCESS; +} + +int do_mfgr_fuse(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + int ret; + puts("Fusing...\n"); + ret = mfgr_fuse(); + if (ret == CMD_RET_SUCCESS) + puts("done.\n"); + else + puts("failed.\n"); + return ret; +} + +int do_updt_fuse(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + unsigned val; + int ret; + int confirmed = argc >= 1 && !strcmp(argv[1], "-y"); + + /* can be used in scripts for command availability check */ + if (argc >= 1 && !strcmp(argv[1], "-n")) + return CMD_RET_SUCCESS; + + /* boot cfg */ + fuse_sense(0, 5, &val); + printf("Fuse 0, 5: %8x\n", val); + if (val & 0x10) { + puts("Fast boot mode already fused, no need to fuse\n"); + return CMD_RET_SUCCESS; + } + if (!confirmed) { + puts("Warning: Programming fuses is an irreversible operation!\n" + " Updating to fast boot mode prevents easy\n" + " downgrading to previous BSP versions.\n" + "\nReally perform this fuse programming? <y/N>\n"); + if (!confirm_yesno()) + return CMD_RET_FAILURE; + } + puts("Fusing fast boot mode...\n"); + ret = fuse_prog(0, 5, 0x00005072); + if (ret == CMD_RET_SUCCESS) + puts("done.\n"); + else + puts("failed.\n"); + return ret; +} + +U_BOOT_CMD( + mfgr_fuse, 1, 0, do_mfgr_fuse, + "OTP fusing during module production", + "" +); + +U_BOOT_CMD( + updt_fuse, 2, 0, do_updt_fuse, + "OTP fusing during module update", + "updt_fuse [-n] [-y] - boot cfg fast boot mode fusing" +); +#endif /* CONFIG_SPL_BUILD */ |