diff options
Diffstat (limited to 'arch/arm/mach-meson/board-common.c')
| -rw-r--r-- | arch/arm/mach-meson/board-common.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/mach-meson/board-common.c b/arch/arm/mach-meson/board-common.c index 8c41301674..18383f774e 100644 --- a/arch/arm/mach-meson/board-common.c +++ b/arch/arm/mach-meson/board-common.c @@ -7,6 +7,7 @@ #include <asm/arch/boot.h> #include <linux/libfdt.h> #include <linux/err.h> +#include <environment.h> #include <asm/arch/mem.h> #include <asm/arch/sm.h> #include <asm/armv8/mmu.h> @@ -67,6 +68,36 @@ void meson_board_add_reserved_memory(void *fdt, u64 start, u64 size) } } +int meson_generate_serial_ethaddr(void) +{ + u8 mac_addr[ARP_HLEN]; + char serial[SM_SERIAL_SIZE]; + u32 sid; + u16 sid16; + + if (!meson_sm_get_serial(serial, SM_SERIAL_SIZE)) { + sid = crc32(0, (unsigned char *)serial, SM_SERIAL_SIZE); + sid16 = crc16_ccitt(0, (unsigned char *)serial, SM_SERIAL_SIZE); + + /* Ensure the NIC specific bytes of the mac are not all 0 */ + if ((sid & 0xffffff) == 0) + sid |= 0x800000; + + /* Non OUI / registered MAC address */ + mac_addr[0] = ((sid16 >> 8) & 0xfc) | 0x02; + mac_addr[1] = (sid16 >> 0) & 0xff; + mac_addr[2] = (sid >> 24) & 0xff; + mac_addr[3] = (sid >> 16) & 0xff; + mac_addr[4] = (sid >> 8) & 0xff; + mac_addr[5] = (sid >> 0) & 0xff; + + eth_env_set_enetaddr("ethaddr", mac_addr); + } else + return -EINVAL; + + return 0; +} + static void meson_set_boot_source(void) { const char *source; |