ar71xx: fix random wireless mac address on the TEW-632BRP/DIR-615 boards

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18951 3c298f89-4303-0410-b956-a3cf2f4a3e73

6 files changed, 129 insertions, 2 deletions

diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/Kconfig b/target/linux/ar71xx/files/arch/mips/ar71xx/Kconfig
index e2aaa6606..48fca77ce 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/Kconfig
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/Kconfig
@@ -25,6 +25,7 @@ config AR71XX_MACH_DIR_615_C1
 	select AR71XX_DEV_AR913X_WMAC
 	select AR71XX_DEV_GPIO_BUTTONS
 	select AR71XX_DEV_LEDS_GPIO
+	select AR71XX_NVRAM
 	default n
 
 config AR71XX_MACH_DIR_825_B1
@@ -171,6 +172,7 @@ config AR71XX_MACH_TEW_632BRP
 	select AR71XX_DEV_AR913X_WMAC
 	select AR71XX_DEV_GPIO_BUTTONS
 	select AR71XX_DEV_LEDS_GPIO
+	select AR71XX_NVRAM
 	default n
 
 config AR71XX_MACH_UBNT
@@ -212,4 +214,7 @@ config AR71XX_DEV_PB42_PCI
 config AR71XX_DEV_USB
 	def_bool n
 
+config AR71XX_NVRAM
+	def_bool n
+
 endif
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/Makefile b/target/linux/ar71xx/files/arch/mips/ar71xx/Makefile
index db118fb29..3a632f74d 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/Makefile
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/Makefile
@@ -23,6 +23,8 @@ obj-$(CONFIG_AR71XX_DEV_M25P80)		+= dev-m25p80.o
 obj-$(CONFIG_AR71XX_DEV_PB42_PCI)	+= dev-pb42-pci.o
 obj-$(CONFIG_AR71XX_DEV_USB)		+= dev-usb.o
 
+obj-$(CONFIG_AR71XX_NVRAM)		+= nvram.o
+
 obj-$(CONFIG_AR71XX_MACH_AP81)		+= mach-ap81.o
 obj-$(CONFIG_AR71XX_MACH_AP83)		+= mach-ap83.o
 obj-$(CONFIG_AR71XX_MACH_AW_NR580)	+= mach-aw-nr580.o
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-dir-615-c1.c b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-dir-615-c1.c
index b5dde368b..e3b6aabeb 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-dir-615-c1.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-dir-615-c1.c
@@ -20,6 +20,7 @@
 #include "dev-ar913x-wmac.h"
 #include "dev-gpio-buttons.h"
 #include "dev-leds-gpio.h"
+#include "nvram.h"
 
 #define DIR_615C1_GPIO_LED_ORANGE_STATUS 1	/* ORANGE:STATUS:TRICOLOR */
 #define DIR_615C1_GPIO_LED_BLUE_WPS	3	/* BLUE:WPS */
@@ -36,6 +37,9 @@
 
 #define DIR_615C1_BUTTONS_POLL_INTERVAL	20
 
+#define DIR_615C1_CONFIG_ADDR		0x1f020000
+#define DIR_615C1_CONFIG_SIZE		0x10000
+
 #ifdef CONFIG_MTD_PARTITIONS
 static struct mtd_partition dir_615c1_partitions[] = {
 	{
@@ -126,7 +130,16 @@ static struct gpio_button dir_615c1_gpio_buttons[] __initdata = {
 
 static void __init dir_615c1_setup(void)
 {
+	const char *config = (char *) KSEG1ADDR(DIR_615C1_CONFIG_ADDR);
 	u8 *eeprom = (u8 *) KSEG1ADDR(0x1fff1000);
+	u8 mac[6];
+	u8 *wlan_mac = NULL;
+
+	if (nvram_parse_mac_addr(config, DIR_615C1_CONFIG_SIZE,
+			         "lan_mac=", mac) == 0) {
+		ar71xx_set_mac_base(mac);
+		wlan_mac = mac;
+	}
 
 	ar71xx_add_device_mdio(0x0);
 
@@ -150,7 +163,7 @@ static void __init dir_615c1_setup(void)
 					ARRAY_SIZE(dir_615c1_gpio_buttons),
 					dir_615c1_gpio_buttons);
 
-	ar913x_add_device_wmac(eeprom, NULL);
+	ar913x_add_device_wmac(eeprom, wlan_mac);
 }
 
 MIPS_MACHINE(AR71XX_MACH_DIR_615_C1, "D-Link DIR-615 rev. C1", dir_615c1_setup);
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-tew-632brp.c b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-tew-632brp.c
index cb2e16d25..bb4cee677 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-tew-632brp.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-tew-632brp.c
@@ -20,6 +20,7 @@
 #include "dev-ar913x-wmac.h"
 #include "dev-gpio-buttons.h"
 #include "dev-leds-gpio.h"
+#include "nvram.h"
 
 #define TEW_632BRP_GPIO_LED_STATUS	1
 #define TEW_632BRP_GPIO_LED_WPS		3
@@ -29,6 +30,9 @@
 
 #define TEW_632BRP_BUTTONS_POLL_INTERVAL	20
 
+#define TEW_632BRP_CONFIG_ADDR	0x1f020000
+#define TEW_632BRP_CONFIG_SIZE	0x10000
+
 #ifdef CONFIG_MTD_PARTITIONS
 static struct mtd_partition tew_632brp_partitions[] = {
 	{
@@ -102,7 +106,16 @@ static struct gpio_button tew_632brp_gpio_buttons[] __initdata = {
 
 static void __init tew_632brp_setup(void)
 {
+	const char *config = (char *) KSEG1ADDR(TEW_632BRP_CONFIG_ADDR);
 	u8 *eeprom = (u8 *) KSEG1ADDR(0x1fff1000);
+	u8 mac[6];
+	u8 *wlan_mac = NULL;
+
+	if (nvram_parse_mac_addr(config, TEW_632BRP_CONFIG_SIZE,
+			         "lan_mac=", mac) == 0) {
+		ar71xx_set_mac_base(mac);
+		wlan_mac = mac;
+	}
 
 	ar71xx_add_device_mdio(0x0);
 
@@ -126,7 +139,7 @@ static void __init tew_632brp_setup(void)
 					ARRAY_SIZE(tew_632brp_gpio_buttons),
 					tew_632brp_gpio_buttons);
 
-	ar913x_add_device_wmac(eeprom, NULL);
+	ar913x_add_device_wmac(eeprom, wlan_mac);
 }
 
 MIPS_MACHINE(AR71XX_MACH_TEW_632BRP, "TRENDnet TEW-632BRP", tew_632brp_setup);
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/nvram.c b/target/linux/ar71xx/files/arch/mips/ar71xx/nvram.c
new file mode 100644
index 000000000..e6d1f8047
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/nvram.c
@@ -0,0 +1,75 @@
+/*
+ *  Atheros AR71xx minimal nvram support
+ *
+ *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/vmalloc.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/string.h>
+
+#include "nvram.h"
+
+char *nvram_find_var(const char *name, const char *buf, unsigned buf_len)
+{
+	unsigned len = strlen(name);
+	char *cur, *last;
+
+	if (buf_len == 0 || len == 0)
+		return NULL;
+
+	if (buf_len < len)
+		return NULL;
+
+	if (len == 1)
+		return memchr(buf, (int) *name, buf_len);
+
+	last = (char *) buf + buf_len - len;
+	for (cur = (char *) buf; cur <= last; cur++)
+		if (cur[0] == name[0] && memcmp(cur, name, len) == 0)
+			return cur + len;
+
+	return NULL;
+}
+
+int nvram_parse_mac_addr(const char *nvram, unsigned nvram_len,
+			 const char *name, char *mac)
+{
+	char *buf;
+	char *mac_str;
+	int ret;
+	int t;
+
+	buf = vmalloc(nvram_len);
+	if (!buf)
+		return -ENOMEM;
+
+	memcpy(buf, nvram, nvram_len);
+	buf[nvram_len - 1] = '\0';
+
+	mac_str = nvram_find_var(name, buf, nvram_len);
+	if (!mac_str) {
+		ret = -EINVAL;
+		goto free;
+	}
+
+	t = sscanf(mac_str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
+		   &mac[0], &mac[1], &mac[2], &mac[3], &mac[4], &mac[5]);
+
+	if (t != 6) {
+		ret = -EINVAL;
+		goto free;
+	}
+
+	ret = 0;
+
+ free:
+	vfree(buf);
+	return ret;
+}
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/nvram.h b/target/linux/ar71xx/files/arch/mips/ar71xx/nvram.h
new file mode 100644
index 000000000..b025d3fc9
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/nvram.h
@@ -0,0 +1,19 @@
+/*
+ *  Atheros AR71xx minimal nvram support
+ *
+ *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  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.
+ */
+
+#ifndef _AR71XX_NVRAM_H
+#define _AR71XX_NVRAM_H
+
+char *nvram_find_var(const char *name, const char *buf,
+		     unsigned buf_len) __init;
+int nvram_parse_mac_addr(const char *nvram, unsigned nvram_len,
+			 const char *name, char *mac) __init;
+
+#endif /* _AR71XX_NVRAM_H */