diff options
| author | John Rigby <john.rigby@linaro.org> | 2011-10-23 22:55:22 -0600 |
|---|---|---|
| committer | John Rigby <john.rigby@linaro.org> | 2012-08-16 10:09:58 -0600 |
| commit | db1d3d55cc02cd63f42e023490c5027b25d2334c (patch) | |
| tree | 7fb5ee1c7e6ea33f8f9fa81fd83344b4b5a8ed2f /arch/arm/cpu/armv7/omap3 | |
| parent | 9b1eb6e7c04afd3763db35b6f661415d292b7a52 (diff) | |
OMAP3: Beagle: set mac addr from dieid
TODO: share dieid<-->mac addr code between
OMAP3 and OMAP4
Signed-off-by: John Rigby <john.rigby@linaro.org>
Diffstat (limited to 'arch/arm/cpu/armv7/omap3')
| -rw-r--r-- | arch/arm/cpu/armv7/omap3/sys_info.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/omap3/sys_info.c b/arch/arm/cpu/armv7/omap3/sys_info.c index 3c8011350..10808e5b1 100644 --- a/arch/arm/cpu/armv7/omap3/sys_info.c +++ b/arch/arm/cpu/armv7/omap3/sys_info.c @@ -79,6 +79,8 @@ void dieid_num_r(void) printf("Die ID #%s\n", uid_s); } + + /****************************************** * get_cpu_type(void) - extract cpu info ******************************************/ @@ -366,3 +368,36 @@ int print_cpuinfo (void) return 0; } #endif /* CONFIG_DISPLAY_CPUINFO */ + +void omap3_die_id_to_ethernet_mac(u8 *mac, int subtype) +{ + struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE; + u32 idcode; + u32 id[4]; + + idcode = readl(&id_base->idcode); + id[0] = readl(&id_base->die_id_0); + id[1] = readl(&id_base->die_id_1); + id[2] = readl(&id_base->die_id_2); + id[3] = readl(&id_base->die_id_3); + + mac[0] = id[2]; + mac[1] = id[2] >> 8; + mac[2] = id[1]; + mac[3] = id[1] >> 8; + mac[4] = id[1] >> 16; + mac[5] = id[1] >> 24; + /* XOR other chip-specific data with ID */ + idcode ^= id[3]; + + mac[0] ^= idcode; + mac[1] ^= idcode >> 8; + mac[2] ^= idcode >> 16; + mac[3] ^= idcode >> 24; + + /* allow four MACs from this same basic data */ + mac[1] = (mac[1] & ~0xc0) | ((subtype & 3) << 6); + + /* mark it as not multicast and outside official 80211 MAC namespace */ + mac[0] = (mac[0] & ~1) | 2; +} |