1 files changed, 106 insertions, 0 deletions
diff --git a/firmware/usrp2/lib/eth_addrs.c b/firmware/usrp2/lib/eth_addrs.c
new file mode 100644
index 000000000..6d3347cf3
--- /dev/null
+++ b/firmware/usrp2/lib/eth_addrs.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2010-2012 Ettus Research LLC
+ * Copyright 2007 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "ethernet.h"
+#include "memory_map.h"
+#include "nonstdio.h"
+#include <stdbool.h>
+#include <string.h>
+#include "i2c.h"
+#include "usrp2/fw_common.h"
+
+static bool
+unprogrammed(const void *t, size_t len)
+{
+  int i;
+  uint8_t *p = (uint8_t *)t;
+  bool all_zeros = true;
+  bool all_ones =  true;
+  for (i = 0; i < len; i++){
+    all_zeros &= p[i] == 0x00;
+    all_ones  &= p[i] == 0xff;
+  }
+  return all_ones | all_zeros;
+}
+
+typedef struct{
+    eth_mac_addr_t mac_addr;
+    struct ip_addr ip_addr;
+    struct ip_addr gateway;
+    struct ip_addr subnet;
+} eth_addrs_t;
+
+static bool eth_addrs_initialized = false;
+
+static const eth_addrs_t default_eth_addrs = {
+    .mac_addr = {{0x00, 0x50, 0xC2, 0x85, 0x3f, 0xff}},
+    .ip_addr = {(192 << 24 | 168 << 16 | 10  << 8  | 2 << 0)},
+    .gateway = {(192 << 24 | 168 << 16 | 10  << 8  | 1 << 0)},
+    .subnet  = {(255 << 24 | 255 << 16 | 255 << 8  | 0 << 0)},
+};
+
+static eth_addrs_t current_eth_addrs;
+
+static void eth_addrs_init(void){
+    if (eth_addrs_initialized) return;
+    eth_addrs_initialized = true;
+
+    #define eth_addrs_init_x(addr, x){ \
+        const bool ok = eeprom_read(USRP2_I2C_ADDR_MBOARD, addr, &current_eth_addrs.x, sizeof(current_eth_addrs.x)); \
+        if (!ok || unprogrammed(&current_eth_addrs.x, sizeof(current_eth_addrs.x))){ \
+            memcpy(&current_eth_addrs.x, &default_eth_addrs.x, sizeof(current_eth_addrs.x)); \
+        } \
+    }
+
+    eth_addrs_init_x(USRP2_EE_MBOARD_MAC_ADDR, mac_addr);
+    eth_addrs_init_x(USRP2_EE_MBOARD_IP_ADDR,  ip_addr);
+    eth_addrs_init_x(USRP2_EE_MBOARD_GATEWAY,  gateway);
+    eth_addrs_init_x(USRP2_EE_MBOARD_SUBNET,   subnet);
+
+}
+
+const eth_mac_addr_t *ethernet_mac_addr(void){
+    eth_addrs_init();
+    return &current_eth_addrs.mac_addr;
+}
+
+const struct ip_addr *get_ip_addr(void){
+    eth_addrs_init();
+    return &current_eth_addrs.ip_addr;
+}
+
+const struct ip_addr *get_subnet(void){
+    eth_addrs_init();
+    return &current_eth_addrs.subnet;
+}
+
+const struct ip_addr *get_gateway(void){
+    eth_addrs_init();
+    return &current_eth_addrs.gateway;
+}
+
+bool set_ip_addr(const struct ip_addr *t){
+    const bool ok = eeprom_write(USRP2_I2C_ADDR_MBOARD, USRP2_EE_MBOARD_IP_ADDR, t, sizeof(struct ip_addr));
+    if (ok) current_eth_addrs.ip_addr = *t;
+    return ok;
+}
+
+void eth_addrs_set_default(void){
+    eth_addrs_initialized = true;
+    memcpy(&current_eth_addrs, &default_eth_addrs, sizeof(default_eth_addrs));
+}