diff options
Diffstat (limited to 'board/theobroma-systems/puma_rk3399/puma-rk3399.c')
| -rw-r--r-- | board/theobroma-systems/puma_rk3399/puma-rk3399.c | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/board/theobroma-systems/puma_rk3399/puma-rk3399.c b/board/theobroma-systems/puma_rk3399/puma-rk3399.c index ea6d256814..6fff3e1ae6 100644 --- a/board/theobroma-systems/puma_rk3399/puma-rk3399.c +++ b/board/theobroma-systems/puma_rk3399/puma-rk3399.c @@ -68,6 +68,42 @@ out: return 0; } +static void setup_macaddr(void) +{ +#if CONFIG_IS_ENABLED(CMD_NET) + int ret; + const char *cpuid = getenv("cpuid#"); + u8 hash[SHA256_SUM_LEN]; + int size = sizeof(hash); + u8 mac_addr[6]; + + /* Only generate a MAC address, if none is set in the environment */ + if (getenv("ethaddr")) + return; + + if (!cpuid) { + debug("%s: could not retrieve 'cpuid#'\n", __func__); + return; + } + + ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size); + if (ret) { + debug("%s: failed to calculate SHA256\n", __func__); + return; + } + + /* Copy 6 bytes of the hash to base the MAC address on */ + memcpy(mac_addr, hash, 6); + + /* Make this a valid MAC address and set it */ + mac_addr[0] &= 0xfe; /* clear multicast bit */ + mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ + eth_setenv_enetaddr("ethaddr", mac_addr); +#endif + + return; +} + static void setup_serial(void) { #if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE) @@ -79,8 +115,9 @@ static void setup_serial(void) u64 serialno; char serialno_str[16]; - /* the first misc device will be used */ - ret = uclass_get_device(UCLASS_MISC, 0, &dev); + /* retrieve the device */ + ret = uclass_get_device_by_driver(UCLASS_MISC, + DM_GET_DRIVER(rockchip_efuse), &dev); if (ret) { debug("%s: could not find efuse device\n", __func__); return; @@ -123,6 +160,7 @@ static void setup_serial(void) int misc_init_r(void) { setup_serial(); + setup_macaddr(); return 0; } |