diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-imx/imx8/cpu.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c index d80b4b175d..da34a94a23 100644 --- a/arch/arm/mach-imx/imx8/cpu.c +++ b/arch/arm/mach-imx/imx8/cpu.c @@ -543,3 +543,41 @@ u64 get_page_table_size(void) return size; } #endif + +#define FUSE_MAC0_WORD0 708 +#define FUSE_MAC0_WORD1 709 +#define FUSE_MAC1_WORD0 710 +#define FUSE_MAC1_WORD1 711 + +void imx_get_mac_from_fuse(int dev_id, unsigned char *mac) +{ + u32 word[2], val[2] = {}; + int i, ret; + + if (dev_id == 0) { + word[0] = FUSE_MAC0_WORD0; + word[1] = FUSE_MAC0_WORD1; + } else { + word[0] = FUSE_MAC1_WORD0; + word[1] = FUSE_MAC1_WORD1; + } + + for (i = 0; i < 2; i++) { + ret = sc_misc_otp_fuse_read(-1, word[i], &val[i]); + if (ret < 0) + goto err; + } + + mac[0] = val[0]; + mac[1] = val[0] >> 8; + mac[2] = val[0] >> 16; + mac[3] = val[0] >> 24; + mac[4] = val[1]; + mac[5] = val[1] >> 8; + + debug("%s: MAC%d: %02x.%02x.%02x.%02x.%02x.%02x\n", + __func__, dev_id, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); + return; +err: + printf("%s: fuse %d, err: %d\n", __func__, word[i], ret); +} |