this partition contains calibration data for WiFi and
some board specific data, like MAC address.
For now we care only about MAC.
Signed-off-by: Oleksij Rempel <linux@xxxxxxxxxxxxxxxx>
---
arch/mips/mach-ath79/Makefile | 1 +
arch/mips/mach-ath79/art.c | 126 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 127 insertions(+)
create mode 100644 arch/mips/mach-ath79/art.c
diff --git a/arch/mips/mach-ath79/Makefile b/arch/mips/mach-ath79/Makefile
index 3772daeba..b827b363c 100644
--- a/arch/mips/mach-ath79/Makefile
+++ b/arch/mips/mach-ath79/Makefile
@@ -1,2 +1,3 @@
obj-y += reset.o
obj-y += bbu.o
+obj-y += art.o
diff --git a/arch/mips/mach-ath79/art.c b/arch/mips/mach-ath79/art.c
new file mode 100644
index 000000000..78f9f1382
--- /dev/null
+++ b/arch/mips/mach-ath79/art.c
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2017 Oleksij Rempel <linux@xxxxxxxxxxxxxxxx>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ */
+
+#include <common.h>
+#include <init.h>
+#include <io.h>
+#include <of.h>
+#include <malloc.h>
+#include <partition.h>
+#include <libfile.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <net.h>
+
+struct ar9300_eeprom {
+ u8 eeprom_version;
+ u8 template_version;
+ u8 mac_addr[6];
+};
+
+static int art_set_mac(struct device_d *dev, struct ar9300_eeprom *eeprom)
+{
+ struct device_node *node = dev->device_node;
+ struct device_node *rnode;
+
+ if (!node)
+ return -ENOENT;
+
+ rnode = of_parse_phandle_from(node, NULL,
+ "barebox,provide-mac-address", 0);
+ if (!rnode)
+ return -ENOENT;
+
+ of_eth_register_ethaddr(rnode, &eeprom->mac_addr[0]);
+
+ return 0;
+}
+
+static int art_read_mac(struct device_d *dev, const char *file)
+{
+ int fd, rbytes;
+ struct ar9300_eeprom eeprom;
+
+ fd = open_and_lseek(file, O_RDONLY, 0x1000);
+ if (fd < 0) {
+ dev_err(dev, "Failed to open eeprom path %s %d\n",
+ file, -errno);
+ return -errno;
+ }
+
+ rbytes = read_full(fd, &eeprom, sizeof(eeprom));
+ close(fd);
+ if (rbytes <= 0 || rbytes < sizeof(eeprom)) {
+ dev_err(dev, "Failed to read %s\n", file);
+ return -EIO;
+ }
+
+ dev_dbg(dev, "ART version: %x.%x\n",
+ eeprom.eeprom_version, eeprom.template_version);
+ dev_dbg(dev, "mac: %02x:%02x:%02x:%02x:%02x:%02x\n",
+ eeprom.mac_addr[0],
+ eeprom.mac_addr[1],
+ eeprom.mac_addr[2],
+ eeprom.mac_addr[3],
+ eeprom.mac_addr[4],
+ eeprom.mac_addr[5]);
+
+ if (!is_valid_ether_addr(&eeprom.mac_addr[0])) {
+ dev_err(dev, "bad MAC addr\n");
+ return -EILSEQ;
+ }
+
+ return art_set_mac(dev, &eeprom);
+}
+
+static int art_probe(struct device_d *dev)
+{
+ char *path;
+ int ret;
+
+ dev_dbg(dev, "found ART partition\n");
+
+ ret = of_find_path(dev->device_node, "device-path", &path, 0);
+ if (ret) {
+ dev_err(dev, "can't find path\n");
+ return ret;
+ }
+
+ return art_read_mac(dev, path);
+}
+
+static struct of_device_id art_dt_ids[] = {
+ {
+ .compatible = "qca,art",
+ }, {
+ /* sentinel */
+ }
+};
+
+static struct driver_d art_driver = {
+ .name = "qca-art",
+ .probe = art_probe,
+ .of_compatible = art_dt_ids,
+};
+
+static int art_of_driver_init(void)
+{
+ platform_driver_register(&art_driver);
+
+ return 0;
+}
+late_initcall(art_of_driver_init);
--
2.11.0
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