brcm47xx: add initial board detection code

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35322 3c298f89-4303-0410-b956-a3cf2f4a3e73

5 files changed, 366 insertions, 6 deletions

diff --git a/target/linux/brcm47xx/patches-3.6/260-MIPS-BCM47XX-add-board-detection.patch b/target/linux/brcm47xx/patches-3.6/260-MIPS-BCM47XX-add-board-detection.patch
new file mode 100644
index 000000000..06dbd0216
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.6/260-MIPS-BCM47XX-add-board-detection.patch
@@ -0,0 +1,321 @@
+--- a/arch/mips/bcm47xx/Makefile
++++ b/arch/mips/bcm47xx/Makefile
+@@ -4,4 +4,5 @@
+ #
+ 
+ obj-y 				+= irq.o nvram.o prom.o serial.o setup.o time.o sprom.o
++obj-y				+= board.o
+ obj-$(CONFIG_BCM47XX_SSB)	+= wgt634u.o
+--- /dev/null
++++ b/arch/mips/bcm47xx/board.c
+@@ -0,0 +1,218 @@
++#include <linux/export.h>
++#include <linux/string.h>
++#include <bcm47xx_board.h>
++#include <bcm47xx_nvram.h>
++
++struct bcm47xx_board_type {
++	const enum bcm47xx_board board;
++	const char *name;
++};
++
++struct bcm47xx_board_type_list {
++	struct bcm47xx_board_type board;
++	const char *value1;
++	const char *value2;
++};
++
++static const struct bcm47xx_board_type *bcm47xx_board = NULL;
++
++static const struct bcm47xx_board_type_list bcm47xx_board_list_model_name[] = {
++	{{BCM47XX_BOARD_DLINK_DIR130, "D-Link DIR-130"}, "DIR-130",},
++	{{BCM47XX_BOARD_DLINK_DIR330, "D-Link DIR-330"}, "DIR-330",},
++	{ {0}, 0},
++};
++
++static const struct bcm47xx_board_type_list bcm47xx_board_list_model_no[] = {
++	{{BCM47XX_BOARD_ASUS_WL700GE, "Asus WL700"}, "WL700",},
++	{ {0}, 0},
++};
++
++static const struct bcm47xx_board_type_list bcm47xx_board_list_hardware_version[] = {
++	{{BCM47XX_BOARD_ASUS_WL330GE, "Asus WL330GE"}, "WL330GE-",},
++	{{BCM47XX_BOARD_ASUS_WL500GPV1, "Asus WL500GPV1"}, "WL500gp-",},
++	{{BCM47XX_BOARD_ASUS_WL500GPV2, "Asus WL500GPV2"}, "WL500GPV2-",},
++	{{BCM47XX_BOARD_ASUS_WL520GC, "Asus WL520GC"}, "WL520GC-",},
++	{{BCM47XX_BOARD_ASUS_WL520GU, "Asus WL520GU"}, "WL520GU-",},
++	{{BCM47XX_BOARD_BELKIN_F7D4301, "Belkin F7D4301"}, "F7D4301",},
++	{ {0}, 0},
++};
++
++static const struct bcm47xx_board_type_list bcm47xx_board_list_productid[] = {
++	{{BCM47XX_BOARD_ASUS_RTAC66U, "Asus RT-AC66U"}, "RT-AC66U",},
++	{{BCM47XX_BOARD_ASUS_RTN10D, "Asus RT-N10D"}, "RT-N10D",},
++	{{BCM47XX_BOARD_ASUS_RTN10U, "Asus RT-N10U"}, "RT-N10U",},
++	{{BCM47XX_BOARD_ASUS_RTN12, "Asus RT-N12"}, "RT-N12",},
++	{{BCM47XX_BOARD_ASUS_RTN12B1, "Asus RT-N12B1"}, "RT-N12B1",},
++	{{BCM47XX_BOARD_ASUS_RTN12C1, "Asus RT-N12C1"}, "RT-N12C1",},
++	{{BCM47XX_BOARD_ASUS_RTN12D1, "Asus RT-N12D1"}, "RT-N12D1",},
++	{{BCM47XX_BOARD_ASUS_RTN12HP, "Asus RT-N12HP"}, "RT-N12HP",},
++	{{BCM47XX_BOARD_ASUS_RTN15U, "Asus RT-N15U"}, "RT-N15U",},
++	{{BCM47XX_BOARD_ASUS_RTN16, "Asus RT-N16"}, "RT-N16",},
++	{{BCM47XX_BOARD_ASUS_RTN53, "Asus RT-N53"}, "RT-N53",},
++	{{BCM47XX_BOARD_ASUS_RTN66U, "Asus RT-N66U"}, "RT-N66U",},
++	{ {0}, 0},
++};
++
++static const struct bcm47xx_board_type_list bcm47xx_board_list_ModelId[] = {
++	{{BCM47XX_BOARD_DELL_TM2300, "Dell WX-5565"}, "WX-5565",},
++	{{BCM47XX_BOARD_MOTOROLA_WE800G, "Motorola WE800G"}, "WE800G",},
++	{{BCM47XX_BOARD_MOTOROLA_WR850GP, "Motorola WR850GP"}, "WR850GP",},
++	{{BCM47XX_BOARD_MOTOROLA_WR850GV2V3, "Motorola WR850G"}, "WR850G",},
++	{ {0}, 0},
++};
++
++static const struct bcm47xx_board_type_list bcm47xx_board_list_melco_id[] = {
++	{{BCM47XX_BOARD_BUFFALO_WBR2_G54, "Buffalo WBR2-G54"}, "29bb0332",},
++	{{BCM47XX_BOARD_BUFFALO_WHR2_A54G54, "Buffalo WHR2-A54G54"}, "290441dd",},
++	{{BCM47XX_BOARD_BUFFALO_WHR_G125, "Buffalo WHR-G125"}, "32093",},
++	{{BCM47XX_BOARD_BUFFALO_WHR_G54S, "Buffalo WHR-G54S"}, "30182",},
++	{{BCM47XX_BOARD_BUFFALO_WHR_HP_G54, "Buffalo WHR-HP-G54"}, "30189",},
++	{{BCM47XX_BOARD_BUFFALO_WLA2_G54L, "Buffalo WLA2-G54L"}, "29129",},
++	{{BCM47XX_BOARD_BUFFALO_WZR_G300N, "Buffalo WZR-G300N"}, "31120",},
++	{{BCM47XX_BOARD_BUFFALO_WZR_RS_G54, "Buffalo WZR-RS-G54"}, "30083",},
++	{{BCM47XX_BOARD_BUFFALO_WZR_RS_G54HP, "Buffalo WZR-RS-G54HP"}, "30103",},
++	{ {0}, 0},
++};
++
++static const struct bcm47xx_board_type_list bcm47xx_board_list_boot_hw[] = {
++	{{BCM47XX_BOARD_CISCO_M10V1, "Cisco M10"}, "M10", "1.0"}, /* like WRT160N v3.0 */
++	{{BCM47XX_BOARD_CISCO_M20V1, "Cisco M20"}, "M20", "1.0"}, /* like WRT310N v2.0 */
++	{{BCM47XX_BOARD_LINKSYS_E1000V1, "Linksys E100"}, "E100", "1.0"},  /* like WRT160N v3.0 */
++	{{BCM47XX_BOARD_LINKSYS_E1000V2, "Linksys E1000"}, "E1000", "2.0"},
++	{{BCM47XX_BOARD_LINKSYS_E2000V1, "Linksys E2000"}, "Linksys E2000", "1.0"},
++	{{BCM47XX_BOARD_LINKSYS_E3000V1, "Linksys E300"}, "E300", "1.0"}, /* like WRT610N v2.0 */
++	{{BCM47XX_BOARD_LINKSYS_E3200V1, "Linksys E3200"}, "E3200", "1.0"},
++	{{BCM47XX_BOARD_LINKSYS_E4200V1, "Linksys E4200"}, "E4200", "1.0"},
++	{{BCM47XX_BOARD_LINKSYS_WRT150NV11, "Linksys WRT150N"}, "WRT150N", "1.1"},
++	{{BCM47XX_BOARD_LINKSYS_WRT150NV1, "Linksys WRT150N"}, "WRT150N", "1"},
++	{{BCM47XX_BOARD_LINKSYS_WRT160NV1, "Linksys WRT160N"}, "WRT160N", "1.0"},
++	{{BCM47XX_BOARD_LINKSYS_WRT160NV3, "Linksys WRT160N"}, "WRT160N", "3.0"},
++	{{BCM47XX_BOARD_LINKSYS_WRT300NV11, "Linksys WRT300N"}, "WRT300N", "1.1"},
++	{{BCM47XX_BOARD_LINKSYS_WRT310NV2, "Linksys WRT310N"}, "WRT310N", "2.0"},
++	{{BCM47XX_BOARD_LINKSYS_WRT54G3GV2, "Linksys WRT54G3GV2-VF"}, "WRT54G3GV2-VF", "1.0"},
++	{{BCM47XX_BOARD_LINKSYS_WRT610NV1, "Linksys WRT610N"}, "WRT610N", "1.0"},
++	{{BCM47XX_BOARD_LINKSYS_WRT610NV2, "Linksys WRT610N"}, "WRT610N", "2.0"},
++	{ {0}, 0},
++};
++
++static const struct bcm47xx_board_type_list bcm47xx_board_list_board_id[] = {
++	{{BCM47XX_BOARD_NETGEAR_WGR614V8, "Netgear WGR614V8"}, "U12H072T00_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WGR614V9, "Netgear WGR614V9"}, "U12H094T00_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNDR3300, "Netgear WNDR3300"}, "U12H093T00_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNDR3400V1, "Netgear WNDR3400V1"}, "U12H155T00_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNDR3400VCNA, "Netgear WNDR3400VCNA"}, "U12H155T01_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNDR3700V3, "Netgear WNDR3700V3"}, "U12H194T00_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNDR4000, "Netgear WNDR4000"}, "U12H181T00_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNDR4500, "Netgear WNDR4500"}, "U12H189T00_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNR2000, "Netgear WNR2000"}, "U12H114T00_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNR3500L, "Netgear WNR3500L"}, "U12H136T99_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNR3500U, "Netgear WNR3500U"}, "U12H136T00_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNR3500V2, "Netgear WNR3500V2"}, "U12H127T00_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNR3500V2VC, "Netgear WNR3500V2VC"}, "U12H127T70_NETGEAR",},
++	{{BCM47XX_BOARD_NETGEAR_WNR834BV2, "Netgear WNR834BV2"}, "U12H081T00_NETGEAR",},
++	{ {0}, 0},
++};
++
++static const struct bcm47xx_board_type bcm47xx_board_unknown[] = {
++	{BCM47XX_BOARD_UNKNOWN, "Unknown Board"},
++};
++
++static inline int startswith(char *source, char *cmp)
++{
++	return !strncmp(source, cmp, strlen(cmp));
++}
++
++static const struct bcm47xx_board_type *bcm47xx_board_get_nvram(void)
++{
++	char buf1[30];
++	char buf2[30];
++	const struct bcm47xx_board_type_list *e;
++
++	if (bcm47xx_nvram_getenv("model_name", buf1, sizeof(buf1)) >= 0) {
++		for (e = bcm47xx_board_list_model_name; e->value1; e++) {
++			if (!strcmp(buf1, e->value1))
++				return &e->board;
++		}
++	}
++
++	if (bcm47xx_nvram_getenv("model_no", buf1, sizeof(buf1)) >= 0) {
++		for (e = bcm47xx_board_list_model_no; e->value1; e++) {
++			if (!strcmp(buf1, e->value1))
++				return &e->board;
++		}
++	}
++
++	if (bcm47xx_nvram_getenv("hardware_version", buf1, sizeof(buf1)) >= 0) {
++		for (e = bcm47xx_board_list_hardware_version; e->value1; e++) {
++			if (!strcmp(buf1, e->value1))
++				return &e->board;
++		}
++	}
++
++	if (bcm47xx_nvram_getenv("productid", buf1, sizeof(buf1)) >= 0) {
++		for (e = bcm47xx_board_list_productid; e->value1; e++) {
++			if (!strcmp(buf1, e->value1))
++				return &e->board;
++		}
++	}
++
++	if (bcm47xx_nvram_getenv("ModelId", buf1, sizeof(buf1)) >= 0) {
++		for (e = bcm47xx_board_list_ModelId; e->value1; e++) {
++			if (!strcmp(buf1, e->value1))
++				return &e->board;
++		}
++	}
++
++	if (bcm47xx_nvram_getenv("melco_id", buf1, sizeof(buf1)) >= 0 ||
++	    bcm47xx_nvram_getenv("buf1falo_id", buf1, sizeof(buf1)) >= 0) {
++		/* buffalo hardware, check id for specific hardware matches */
++		for (e = bcm47xx_board_list_melco_id; e->value1; e++) {
++			if (!strcmp(buf1, e->value1))
++				return &e->board;
++		}
++	}
++
++	if (bcm47xx_nvram_getenv("boot_hw_model", buf1, sizeof(buf1)) >= 0 &&
++	    bcm47xx_nvram_getenv("boot_hw_ver", buf2, sizeof(buf2)) >= 0) {
++		for (e = bcm47xx_board_list_boot_hw; e->value1; e++) {
++			if (!strcmp(buf1, e->value1) && !strcmp(buf2, e->value2))
++				return &e->board;
++		}
++	}
++
++	if (bcm47xx_nvram_getenv("board_id", buf1, sizeof(buf1)) >= 0) {
++		for (e = bcm47xx_board_list_board_id; e->value1; e++) {
++			if (!strcmp(buf1, e->value1))
++				return &e->board;
++		}
++	}
++	return bcm47xx_board_unknown;
++}
++
++static void bcm47xx_board_detect(void)
++{
++	char buf[15];
++
++	if (bcm47xx_board != NULL)
++		return;
++	/* check if the nvram is available */
++	if (bcm47xx_nvram_getenv("boardtype", buf, sizeof(buf)) == -ENXIO)
++		return;
++
++	bcm47xx_board = bcm47xx_board_get_nvram();
++	pr_info("Found board: \"%s\"\n", bcm47xx_board->name);
++}
++
++enum bcm47xx_board bcm47xx_board_get(void)
++{
++	bcm47xx_board_detect();
++	return bcm47xx_board->board;
++}
++EXPORT_SYMBOL(bcm47xx_board_get);
++
++const char *bcm47xx_board_get_name(void)
++{
++	bcm47xx_board_detect();
++	return bcm47xx_board->name;
++}
++EXPORT_SYMBOL(bcm47xx_board_get_name);
+--- /dev/null
++++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
+@@ -0,0 +1,89 @@
++#ifndef __BCM47XX_BOARD_H
++#define __BCM47XX_BOARD_H
++
++enum bcm47xx_board {
++	BCM47XX_BOARD_ASUS_RTAC66U,
++	BCM47XX_BOARD_ASUS_RTN10D,
++	BCM47XX_BOARD_ASUS_RTN10U,
++	BCM47XX_BOARD_ASUS_RTN12,
++	BCM47XX_BOARD_ASUS_RTN12B1,
++	BCM47XX_BOARD_ASUS_RTN12C1,
++	BCM47XX_BOARD_ASUS_RTN12D1,
++	BCM47XX_BOARD_ASUS_RTN12HP,
++	BCM47XX_BOARD_ASUS_RTN15U,
++	BCM47XX_BOARD_ASUS_RTN16,
++	BCM47XX_BOARD_ASUS_RTN53,
++	BCM47XX_BOARD_ASUS_RTN66U,
++	BCM47XX_BOARD_ASUS_WL330GE,
++	BCM47XX_BOARD_ASUS_WL500GPV1,
++	BCM47XX_BOARD_ASUS_WL500GPV2,
++	BCM47XX_BOARD_ASUS_WL520GC,
++	BCM47XX_BOARD_ASUS_WL520GU,
++	BCM47XX_BOARD_ASUS_WL700GE,
++
++	BCM47XX_BOARD_BELKIN_F7D4301,
++
++	BCM47XX_BOARD_BUFFALO_WBR2_G54,
++	BCM47XX_BOARD_BUFFALO_WHR2_A54G54,
++	BCM47XX_BOARD_BUFFALO_WHR_G125,
++	BCM47XX_BOARD_BUFFALO_WHR_G54S,
++	BCM47XX_BOARD_BUFFALO_WHR_HP_G54,
++	BCM47XX_BOARD_BUFFALO_WLA2_G54L,
++	BCM47XX_BOARD_BUFFALO_WZR_G300N,
++	BCM47XX_BOARD_BUFFALO_WZR_RS_G54,
++	BCM47XX_BOARD_BUFFALO_WZR_RS_G54HP,
++
++	BCM47XX_BOARD_CISCO_M10V1,
++	BCM47XX_BOARD_CISCO_M20V1,
++
++	BCM47XX_BOARD_DELL_TM2300,
++
++	BCM47XX_BOARD_DLINK_DIR130,
++	BCM47XX_BOARD_DLINK_DIR330,
++
++	BCM47XX_BOARD_LINKSYS_E1000V1,
++	BCM47XX_BOARD_LINKSYS_E1000V2,
++	BCM47XX_BOARD_LINKSYS_E2000V1,
++	BCM47XX_BOARD_LINKSYS_E3000V1,
++	BCM47XX_BOARD_LINKSYS_E3200V1,
++	BCM47XX_BOARD_LINKSYS_E4200V1,
++	BCM47XX_BOARD_LINKSYS_WRT150NV1,
++	BCM47XX_BOARD_LINKSYS_WRT150NV11,
++	BCM47XX_BOARD_LINKSYS_WRT160NV1,
++	BCM47XX_BOARD_LINKSYS_WRT160NV3,
++	BCM47XX_BOARD_LINKSYS_WRT300NV11,
++	BCM47XX_BOARD_LINKSYS_WRT310NV2,
++	BCM47XX_BOARD_LINKSYS_WRT54G3GV2,
++	BCM47XX_BOARD_LINKSYS_WRT610NV1,
++	BCM47XX_BOARD_LINKSYS_WRT610NV2,
++
++	BCM47XX_BOARD_MOTOROLA_WE800G,
++	BCM47XX_BOARD_MOTOROLA_WR850GP,
++	BCM47XX_BOARD_MOTOROLA_WR850GV2V3,
++
++	BCM47XX_BOARD_NETGEAR_WGR614V8,
++	BCM47XX_BOARD_NETGEAR_WGR614V9,
++	BCM47XX_BOARD_NETGEAR_WNDR3300,
++	BCM47XX_BOARD_NETGEAR_WNDR3400V1,
++	BCM47XX_BOARD_NETGEAR_WNDR3400VCNA,
++	BCM47XX_BOARD_NETGEAR_WNDR3700V3,
++	BCM47XX_BOARD_NETGEAR_WNDR4000,
++	BCM47XX_BOARD_NETGEAR_WNDR4500,
++	BCM47XX_BOARD_NETGEAR_WNR2000,
++	BCM47XX_BOARD_NETGEAR_WNR3500L,
++	BCM47XX_BOARD_NETGEAR_WNR3500U,
++	BCM47XX_BOARD_NETGEAR_WNR3500V2,
++	BCM47XX_BOARD_NETGEAR_WNR3500V2VC,
++	BCM47XX_BOARD_NETGEAR_WNR834BV2,
++
++	/* TODO */
++	BCM47XX_BOARD_SIMPLETECH_SIMPLESHARE,
++
++	BCM47XX_BOARD_UNKNOWN,
++	BCM47XX_BOARD_NON,
++};
++
++extern enum bcm47xx_board bcm47xx_board_get(void);
++extern const char *bcm47xx_board_get_name(void);
++
++#endif /* __BCM47XX_BOARD_H */
diff --git a/target/linux/brcm47xx/patches-3.6/261-MIPS-BCM47XX-print-board-name-in-proc-cpuinfo.patch b/target/linux/brcm47xx/patches-3.6/261-MIPS-BCM47XX-print-board-name-in-proc-cpuinfo.patch
new file mode 100644
index 000000000..abfa4004f
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.6/261-MIPS-BCM47XX-print-board-name-in-proc-cpuinfo.patch
@@ -0,0 +1,39 @@
+--- a/arch/mips/bcm47xx/prom.c
++++ b/arch/mips/bcm47xx/prom.c
+@@ -32,10 +32,35 @@
+ #include <asm/bootinfo.h>
+ #include <asm/fw/cfe/cfe_api.h>
+ #include <asm/fw/cfe/cfe_error.h>
++#include <bcm47xx.h>
++#include <bcm47xx_board.h>
++
++static u16 get_chip_id(void)
++{
++	switch (bcm47xx_bus_type) {
++#ifdef CONFIG_BCM47XX_SSB
++	case BCM47XX_BUS_TYPE_SSB:
++		return bcm47xx_bus.ssb.chip_id;
++#endif
++#ifdef CONFIG_BCM47XX_BCMA
++	case BCM47XX_BUS_TYPE_BCMA:
++		return bcm47xx_bus.bcma.bus.chipinfo.id;
++#endif
++	}
++	return 0;
++}
+ 
+ const char *get_system_type(void)
+ {
+-	return "Broadcom BCM47XX";
++	static char buf[128];
++	u16 chip_id = get_chip_id();
++
++	snprintf(buf, sizeof(buf),
++		 (chip_id > 0x9999) ? "Broadcom BCM%d (%s)" :
++				      "Broadcom BCM%04X (%s)",
++		 chip_id, bcm47xx_board_get_name());
++
++	return buf;
+ }
+ 
+ static __init int prom_init_cfe(void)
diff --git a/target/linux/brcm47xx/patches-3.6/400-arch-bcm47xx.patch b/target/linux/brcm47xx/patches-3.6/400-arch-bcm47xx.patch
index c8c3158c1..3f8b14dba 100644
--- a/target/linux/brcm47xx/patches-3.6/400-arch-bcm47xx.patch
+++ b/target/linux/brcm47xx/patches-3.6/400-arch-bcm47xx.patch
@@ -33,10 +33,10 @@
 +EXPORT_SYMBOL(nvram_get);
 --- a/arch/mips/bcm47xx/Makefile
 +++ b/arch/mips/bcm47xx/Makefile
-@@ -4,4 +4,5 @@
- #
+@@ -5,4 +5,5 @@
  
  obj-y 				+= irq.o nvram.o prom.o serial.o setup.o time.o sprom.o
+ obj-y				+= board.o
 +obj-y 				+= gpio.o
  obj-$(CONFIG_BCM47XX_SSB)	+= wgt634u.o
 --- /dev/null
diff --git a/target/linux/brcm47xx/patches-3.6/812-disable_wgt634u_crap.patch b/target/linux/brcm47xx/patches-3.6/812-disable_wgt634u_crap.patch
index 0dc1564ad..10ebcb4c6 100644
--- a/target/linux/brcm47xx/patches-3.6/812-disable_wgt634u_crap.patch
+++ b/target/linux/brcm47xx/patches-3.6/812-disable_wgt634u_crap.patch
@@ -1,8 +1,8 @@
 --- a/arch/mips/bcm47xx/Makefile
 +++ b/arch/mips/bcm47xx/Makefile
-@@ -5,4 +5,3 @@
- 
+@@ -6,4 +6,3 @@
  obj-y 				+= irq.o nvram.o prom.o serial.o setup.o time.o sprom.o
+ obj-y				+= board.o
  obj-y 				+= gpio.o
 -obj-$(CONFIG_BCM47XX_SSB)	+= wgt634u.o
 --- a/arch/mips/bcm47xx/wgt634u.c
diff --git a/target/linux/brcm47xx/patches-3.6/820-wgt634u-nvram-fix.patch b/target/linux/brcm47xx/patches-3.6/820-wgt634u-nvram-fix.patch
index 745ff501a..ef527c701 100644
--- a/target/linux/brcm47xx/patches-3.6/820-wgt634u-nvram-fix.patch
+++ b/target/linux/brcm47xx/patches-3.6/820-wgt634u-nvram-fix.patch
@@ -5,9 +5,9 @@ out the configuration than the in kernel cfe config reader.
 
 --- a/arch/mips/bcm47xx/Makefile
 +++ b/arch/mips/bcm47xx/Makefile
-@@ -5,3 +5,4 @@
- 
+@@ -6,3 +6,4 @@
  obj-y 				+= irq.o nvram.o prom.o serial.o setup.o time.o sprom.o
+ obj-y				+= board.o
  obj-y 				+= gpio.o
 +obj-y 				+= cfe_env.o
 --- /dev/null