ti: common: board_detect: commodify ethaddr environment setting code
Keystone and OMAP platforms will need this to set ethernet
MAC addresses from board EEPROM.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/ti/common/board_detect.c b/board/ti/common/board_detect.c
index a5dba94..c55e24e 100644
--- a/board/ti/common/board_detect.c
+++ b/board/ti/common/board_detect.c
@@ -314,3 +314,65 @@
else
setenv("board_serial", unknown);
}
+
+static u64 mac_to_u64(u8 mac[6])
+{
+ int i;
+ u64 addr = 0;
+
+ for (i = 0; i < 6; i++) {
+ addr <<= 8;
+ addr |= mac[i];
+ }
+
+ return addr;
+}
+
+static void u64_to_mac(u64 addr, u8 mac[6])
+{
+ mac[5] = addr;
+ mac[4] = addr >> 8;
+ mac[3] = addr >> 16;
+ mac[2] = addr >> 24;
+ mac[1] = addr >> 32;
+ mac[0] = addr >> 40;
+}
+
+void board_ti_set_ethaddr(int index)
+{
+ uint8_t mac_addr[6];
+ int i;
+ u64 mac1, mac2;
+ u8 mac_addr1[6], mac_addr2[6];
+ int num_macs;
+ /*
+ * Export any Ethernet MAC addresses from EEPROM.
+ * The 2 MAC addresses in EEPROM define the address range.
+ */
+ board_ti_get_eth_mac_addr(0, mac_addr1);
+ board_ti_get_eth_mac_addr(1, mac_addr2);
+
+ if (is_valid_ethaddr(mac_addr1) && is_valid_ethaddr(mac_addr2)) {
+ mac1 = mac_to_u64(mac_addr1);
+ mac2 = mac_to_u64(mac_addr2);
+
+ /* must contain an address range */
+ num_macs = mac2 - mac1 + 1;
+ if (num_macs <= 0)
+ return;
+
+ if (num_macs > 50) {
+ printf("%s: Too many MAC addresses: %d. Limiting to 50\n",
+ __func__, num_macs);
+ num_macs = 50;
+ }
+
+ for (i = 0; i < num_macs; i++) {
+ u64_to_mac(mac1 + i, mac_addr);
+ if (is_valid_ethaddr(mac_addr)) {
+ eth_setenv_enetaddr_by_index("eth", i + index,
+ mac_addr);
+ }
+ }
+ }
+}
diff --git a/board/ti/common/board_detect.h b/board/ti/common/board_detect.h
index 52b0075..88b0a59 100644
--- a/board/ti/common/board_detect.h
+++ b/board/ti/common/board_detect.h
@@ -193,4 +193,16 @@
*/
void set_board_info_env(char *name);
+/**
+ * board_ti_set_ethaddr- Sets the ethaddr environment from EEPROM
+ * @index: The first eth<index>addr environment variable to set
+ *
+ * EEPROM should be already read before calling this function.
+ * The EEPROM contains 2 MAC addresses which define the MAC address
+ * range (i.e. first and last MAC address).
+ * This function sets the ethaddr environment variable for all
+ * the available MAC addresses starting from eth<index>addr.
+ */
+void board_ti_set_ethaddr(int index);
+
#endif /* __BOARD_DETECT_H */