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board: amlogic: vim3: configure serial# from ethaddr

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The Khadas VIM3 and VIM3L boards, which are supported in Android via
Yukawa [1] need a serial number for usb/fastboot enumeration.

Whenever the environment does not provide a serial#, use the eth mac
address as serial#.

[1] https://source.android.com/setup/build/devices#vim3_and_vim3l_boards

Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20220119142400.127342-1-mkorpershoek@baylibre.com
This commit is contained in:
Mattijs Korpershoek 2022-01-19 15:24:00 +01:00 committed by Neil Armstrong
parent b749d5ecdc
commit 09c2debab7
1 changed files with 9 additions and 0 deletions
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9
board/amlogic/vim3/vim3.c
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@ -153,6 +153,7 @@ int misc_init_r(void)
{
u8 mac_addr[MAC_ADDR_LEN];
char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
char serial_string[EFUSE_MAC_SIZE + 1];
ssize_t len;
if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
@ -177,5 +178,13 @@ int misc_init_r(void)
eth_env_get_enetaddr("ethaddr", mac_addr);
}
if (!env_get("serial#")) {
eth_env_get_enetaddr("ethaddr", mac_addr);
sprintf(serial_string, "%02X%02X%02X%02X%02X%02X",
mac_addr[0], mac_addr[1], mac_addr[2],
mac_addr[3], mac_addr[4], mac_addr[5]);
env_set("serial#", serial_string);
}
return 0;
}