brcm47xx: add kernel 4.4 support

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 47930

20 files changed, 2027 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-4.4/159-cpu_fixes.patch b/target/linux/brcm47xx/patches-4.4/159-cpu_fixes.patch
new file mode 100644
index 0000000000..50df04f1e0
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/159-cpu_fixes.patch
@@ -0,0 +1,391 @@
+--- a/arch/mips/include/asm/r4kcache.h
++++ b/arch/mips/include/asm/r4kcache.h
+@@ -25,6 +25,20 @@
+ extern void (*r4k_blast_dcache)(void);
+ extern void (*r4k_blast_icache)(void);
+ 
++#ifdef CONFIG_BCM47XX
++#include <asm/paccess.h>
++#include <linux/ssb/ssb.h>
++#define BCM4710_DUMMY_RREG() ((void) *((u8 *) KSEG1ADDR(SSB_ENUM_BASE)))
++
++#define BCM4710_FILL_TLB(addr) (*(volatile unsigned long *)(addr))
++#define BCM4710_PROTECTED_FILL_TLB(addr) ({ unsigned long x; get_dbe(x, (volatile unsigned long *)(addr)); })
++#else
++#define BCM4710_DUMMY_RREG()
++
++#define BCM4710_FILL_TLB(addr)
++#define BCM4710_PROTECTED_FILL_TLB(addr)
++#endif
++
+ /*
+  * This macro return a properly sign-extended address suitable as base address
+  * for indexed cache operations.  Two issues here:
+@@ -98,6 +112,7 @@ static inline void flush_icache_line_ind
+ static inline void flush_dcache_line_indexed(unsigned long addr)
+ {
+ 	__dflush_prologue
++	BCM4710_DUMMY_RREG();
+ 	cache_op(Index_Writeback_Inv_D, addr);
+ 	__dflush_epilogue
+ }
+@@ -125,6 +140,7 @@ static inline void flush_icache_line(uns
+ static inline void flush_dcache_line(unsigned long addr)
+ {
+ 	__dflush_prologue
++	BCM4710_DUMMY_RREG();
+ 	cache_op(Hit_Writeback_Inv_D, addr);
+ 	__dflush_epilogue
+ }
+@@ -132,6 +148,7 @@ static inline void flush_dcache_line(uns
+ static inline void invalidate_dcache_line(unsigned long addr)
+ {
+ 	__dflush_prologue
++	BCM4710_DUMMY_RREG();
+ 	cache_op(Hit_Invalidate_D, addr);
+ 	__dflush_epilogue
+ }
+@@ -187,6 +204,7 @@ static inline void protected_flush_icach
+ #ifdef CONFIG_EVA
+ 		protected_cachee_op(Hit_Invalidate_I, addr);
+ #else
++		BCM4710_DUMMY_RREG();
+ 		protected_cache_op(Hit_Invalidate_I, addr);
+ #endif
+ 		break;
+@@ -201,6 +219,7 @@ static inline void protected_flush_icach
+  */
+ static inline void protected_writeback_dcache_line(unsigned long addr)
+ {
++	BCM4710_DUMMY_RREG();
+ #ifdef CONFIG_EVA
+ 	protected_cachee_op(Hit_Writeback_Inv_D, addr);
+ #else
+@@ -554,8 +573,51 @@ static inline void invalidate_tcache_pag
+ 		: "r" (base),						\
+ 		  "i" (op));
+ 
++static inline void blast_dcache(void)
++{
++	unsigned long start = KSEG0;
++	unsigned long dcache_size = current_cpu_data.dcache.waysize * current_cpu_data.dcache.ways;
++	unsigned long end = (start + dcache_size);
++
++	do {
++		BCM4710_DUMMY_RREG();
++		cache_op(Index_Writeback_Inv_D, start);
++		start += current_cpu_data.dcache.linesz;
++	} while(start < end);
++}
++
++static inline void blast_dcache_page(unsigned long page)
++{
++	unsigned long start = page;
++	unsigned long end = start + PAGE_SIZE;
++
++	BCM4710_FILL_TLB(start);
++	do {
++		BCM4710_DUMMY_RREG();
++		cache_op(Hit_Writeback_Inv_D, start);
++		start += current_cpu_data.dcache.linesz;
++	} while(start < end);
++}
++
++static inline void blast_dcache_page_indexed(unsigned long page)
++{
++	unsigned long start = page;
++	unsigned long end = start + PAGE_SIZE;
++	unsigned long ws_inc = 1UL << current_cpu_data.dcache.waybit;
++	unsigned long ws_end = current_cpu_data.dcache.ways <<
++	                       current_cpu_data.dcache.waybit;
++	unsigned long ws, addr;
++	for (ws = 0; ws < ws_end; ws += ws_inc) {
++		start = page + ws;
++		for (addr = start; addr < end; addr += current_cpu_data.dcache.linesz) {
++			BCM4710_DUMMY_RREG();
++			cache_op(Index_Writeback_Inv_D, addr);
++		}
++	}
++}
++
+ /* build blast_xxx, blast_xxx_page, blast_xxx_page_indexed */
+-#define __BUILD_BLAST_CACHE(pfx, desc, indexop, hitop, lsize, extra)	\
++#define __BUILD_BLAST_CACHE(pfx, desc, indexop, hitop, lsize, extra, war) \
+ static inline void extra##blast_##pfx##cache##lsize(void)		\
+ {									\
+ 	unsigned long start = INDEX_BASE;				\
+@@ -567,6 +629,7 @@ static inline void extra##blast_##pfx##c
+ 									\
+ 	__##pfx##flush_prologue						\
+ 									\
++	war								\
+ 	for (ws = 0; ws < ws_end; ws += ws_inc)				\
+ 		for (addr = start; addr < end; addr += lsize * 32)	\
+ 			cache##lsize##_unroll32(addr|ws, indexop);	\
+@@ -581,6 +644,7 @@ static inline void extra##blast_##pfx##c
+ 									\
+ 	__##pfx##flush_prologue						\
+ 									\
++	war								\
+ 	do {								\
+ 		cache##lsize##_unroll32(start, hitop);			\
+ 		start += lsize * 32;					\
+@@ -599,6 +663,8 @@ static inline void extra##blast_##pfx##c
+ 			       current_cpu_data.desc.waybit;		\
+ 	unsigned long ws, addr;						\
+ 									\
++	war								\
++									\
+ 	__##pfx##flush_prologue						\
+ 									\
+ 	for (ws = 0; ws < ws_end; ws += ws_inc)				\
+@@ -608,26 +674,26 @@ static inline void extra##blast_##pfx##c
+ 	__##pfx##flush_epilogue						\
+ }
+ 
+-__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 16, )
+-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 16, )
+-__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 16, )
+-__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 32, )
+-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 32, )
+-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I_Loongson2, 32, loongson2_)
+-__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 32, )
+-__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 64, )
+-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64, )
+-__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64, )
+-__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 128, )
+-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 128, )
+-__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128, )
+-
+-__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 16, )
+-__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 32, )
+-__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 16, )
+-__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 32, )
+-__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 64, )
+-__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 128, )
++__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 16, , )
++__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 16, , BCM4710_FILL_TLB(start);)
++__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 16, , )
++__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 32, , )
++__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 32, , BCM4710_FILL_TLB(start);)
++__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I_Loongson2, 32, loongson2_, BCM4710_FILL_TLB(start);)
++__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 32, , )
++__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 64, , )
++__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64, , BCM4710_FILL_TLB(start);)
++__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64, , )
++__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 128, , )
++__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 128, , )
++__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128, , )
++
++__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 16, , )
++__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 32, , )
++__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 16, , )
++__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 32, , )
++__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 64, , )
++__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 128, , )
+ 
+ #define __BUILD_BLAST_USER_CACHE(pfx, desc, indexop, hitop, lsize) \
+ static inline void blast_##pfx##cache##lsize##_user_page(unsigned long page) \
+@@ -656,17 +722,19 @@ __BUILD_BLAST_USER_CACHE(d, dcache, Inde
+ __BUILD_BLAST_USER_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64)
+ 
+ /* build blast_xxx_range, protected_blast_xxx_range */
+-#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot, extra)	\
++#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot, extra, war, war2)	\
+ static inline void prot##extra##blast_##pfx##cache##_range(unsigned long start, \
+ 						    unsigned long end)	\
+ {									\
+ 	unsigned long lsize = cpu_##desc##_line_size();			\
+ 	unsigned long addr = start & ~(lsize - 1);			\
+ 	unsigned long aend = (end - 1) & ~(lsize - 1);			\
++	war								\
+ 									\
+ 	__##pfx##flush_prologue						\
+ 									\
+ 	while (1) {							\
++		war2							\
+ 		prot##cache_op(hitop, addr);				\
+ 		if (addr == aend)					\
+ 			break;						\
+@@ -678,8 +746,8 @@ static inline void prot##extra##blast_##
+ 
+ #ifndef CONFIG_EVA
+ 
+-__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_, )
+-__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_, )
++__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_, , BCM4710_PROTECTED_FILL_TLB(addr); BCM4710_PROTECTED_FILL_TLB(aend);, BCM4710_DUMMY_RREG();)
++__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_, , , )
+ 
+ #else
+ 
+@@ -716,14 +784,14 @@ __BUILD_PROT_BLAST_CACHE_RANGE(d, dcache
+ __BUILD_PROT_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I)
+ 
+ #endif
+-__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_, )
++__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_, , , )
+ __BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I_Loongson2, \
+-	protected_, loongson2_)
+-__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, , )
+-__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, , )
+-__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, , )
++	protected_, loongson2_, , )
++__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, , , BCM4710_FILL_TLB(addr); BCM4710_FILL_TLB(aend);, BCM4710_DUMMY_RREG();)
++__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, , , , )
++__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, , , , )
+ /* blast_inv_dcache_range */
+-__BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, , )
+-__BUILD_BLAST_CACHE_RANGE(inv_s, scache, Hit_Invalidate_SD, , )
++__BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, , , , BCM4710_DUMMY_RREG();)
++__BUILD_BLAST_CACHE_RANGE(inv_s, scache, Hit_Invalidate_SD, , , , )
+ 
+ #endif /* _ASM_R4KCACHE_H */
+--- a/arch/mips/include/asm/stackframe.h
++++ b/arch/mips/include/asm/stackframe.h
+@@ -358,6 +358,10 @@
+ 		.macro	RESTORE_SP_AND_RET
+ 		LONG_L	sp, PT_R29(sp)
+ 		.set	arch=r4000
++#ifdef CONFIG_BCM47XX
++		nop
++		nop
++#endif
+ 		eret
+ 		.set	mips0
+ 		.endm
+--- a/arch/mips/kernel/genex.S
++++ b/arch/mips/kernel/genex.S
+@@ -32,6 +32,10 @@
+ NESTED(except_vec3_generic, 0, sp)
+ 	.set	push
+ 	.set	noat
++#ifdef CONFIG_BCM47XX
++	nop
++	nop
++#endif
+ #if R5432_CP0_INTERRUPT_WAR
+ 	mfc0	k0, CP0_INDEX
+ #endif
+--- a/arch/mips/mm/c-r4k.c
++++ b/arch/mips/mm/c-r4k.c
+@@ -39,6 +39,9 @@
+ #include <asm/dma-coherence.h>
+ #include <asm/mips-cm.h>
+ 
++/* For enabling BCM4710 cache workarounds */
++int bcm4710 = 0;
++
+ /*
+  * Special Variant of smp_call_function for use by cache functions:
+  *
+@@ -157,6 +160,9 @@ static void r4k_blast_dcache_user_page_s
+ {
+ 	unsigned long  dc_lsize = cpu_dcache_line_size();
+ 
++	if (bcm4710)
++		r4k_blast_dcache_page = blast_dcache_page;
++	else
+ 	if (dc_lsize == 0)
+ 		r4k_blast_dcache_user_page = (void *)cache_noop;
+ 	else if (dc_lsize == 16)
+@@ -175,6 +181,9 @@ static void r4k_blast_dcache_page_indexe
+ {
+ 	unsigned long dc_lsize = cpu_dcache_line_size();
+ 
++	if (bcm4710)
++		r4k_blast_dcache_page_indexed = blast_dcache_page_indexed;
++	else
+ 	if (dc_lsize == 0)
+ 		r4k_blast_dcache_page_indexed = (void *)cache_noop;
+ 	else if (dc_lsize == 16)
+@@ -194,6 +203,9 @@ static void r4k_blast_dcache_setup(void)
+ {
+ 	unsigned long dc_lsize = cpu_dcache_line_size();
+ 
++	if (bcm4710)
++		r4k_blast_dcache = blast_dcache;
++	else
+ 	if (dc_lsize == 0)
+ 		r4k_blast_dcache = (void *)cache_noop;
+ 	else if (dc_lsize == 16)
+@@ -793,6 +805,8 @@ static void local_r4k_flush_cache_sigtra
+ 	unsigned long addr = (unsigned long) arg;
+ 
+ 	R4600_HIT_CACHEOP_WAR_IMPL;
++	BCM4710_PROTECTED_FILL_TLB(addr);
++	BCM4710_PROTECTED_FILL_TLB(addr + 4);
+ 	if (dc_lsize)
+ 		protected_writeback_dcache_line(addr & ~(dc_lsize - 1));
+ 	if (!cpu_icache_snoops_remote_store && scache_size)
+@@ -1602,6 +1616,17 @@ static void coherency_setup(void)
+ 	 * silly idea of putting something else there ...
+ 	 */
+ 	switch (current_cpu_type()) {
++	case CPU_BMIPS3300:
++		{
++			u32 cm;
++			cm = read_c0_diag();
++			/* Enable icache */
++			cm |= (1 << 31);
++			/* Enable dcache */
++			cm |= (1 << 30);
++			write_c0_diag(cm);
++		}
++		break;
+ 	case CPU_R4000PC:
+ 	case CPU_R4000SC:
+ 	case CPU_R4000MC:
+@@ -1648,6 +1673,15 @@ void r4k_cache_init(void)
+ 	extern void build_copy_page(void);
+ 	struct cpuinfo_mips *c = &current_cpu_data;
+ 
++	/* Check if special workarounds are required */
++#ifdef CONFIG_BCM47XX
++	if (current_cpu_data.cputype == CPU_BMIPS32 && (current_cpu_data.processor_id & 0xff) == 0) {
++		printk("Enabling BCM4710A0 cache workarounds.\n");
++		bcm4710 = 1;
++	} else
++#endif
++		bcm4710 = 0;
++
+ 	probe_pcache();
+ 	setup_scache();
+ 
+@@ -1717,7 +1751,15 @@ void r4k_cache_init(void)
+ 	 */
+ 	local_r4k___flush_cache_all(NULL);
+ 
++#ifdef CONFIG_BCM47XX
++	{
++		static void (*_coherency_setup)(void);
++		_coherency_setup = (void (*)(void)) KSEG1ADDR(coherency_setup);
++		_coherency_setup();
++	}
++#else
+ 	coherency_setup();
++#endif
+ 	board_cache_error_setup = r4k_cache_error_setup;
+ 
+ 	/*
+--- a/arch/mips/mm/tlbex.c
++++ b/arch/mips/mm/tlbex.c
+@@ -1281,6 +1281,9 @@ static void build_r4000_tlb_refill_handl
+ 			/* No need for uasm_i_nop */
+ 		}
+ 
++#ifdef CONFIG_BCM47XX
++		uasm_i_nop(&p);
++#endif
+ #ifdef CONFIG_64BIT
+ 		build_get_pmde64(&p, &l, &r, K0, K1); /* get pmd in K1 */
+ #else
+@@ -1868,6 +1871,9 @@ build_r4000_tlbchange_handler_head(u32 *
+ {
+ 	struct work_registers wr = build_get_work_registers(p);
+ 
++#ifdef CONFIG_BCM47XX
++	uasm_i_nop(p);
++#endif
+ #ifdef CONFIG_64BIT
+ 	build_get_pmde64(p, l, r, wr.r1, wr.r2); /* get pmd in ptr */
+ #else
diff --git a/target/linux/brcm47xx/patches-4.4/160-kmap_coherent.patch b/target/linux/brcm47xx/patches-4.4/160-kmap_coherent.patch
new file mode 100644
index 0000000000..3d65fdfd62
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/160-kmap_coherent.patch
@@ -0,0 +1,78 @@
+From: Jeff Hansen <jhansen@cardaccess-inc.com>
+Subject: [PATCH] kmap_coherent
+
+On ASUS WL-500gP there are some "Data bus error"s when executing simple
+commands liks "ps" or "cat /proc/1/cmdline".
+
+This fixes OpenWrt ticket #1485: https://dev.openwrt.org/ticket/1485
+---
+--- a/arch/mips/include/asm/cpu-features.h
++++ b/arch/mips/include/asm/cpu-features.h
+@@ -160,6 +160,9 @@
+ #ifndef cpu_has_local_ebase
+ #define cpu_has_local_ebase	1
+ #endif
++#ifndef cpu_use_kmap_coherent
++#define cpu_use_kmap_coherent 1
++#endif
+ 
+ /*
+  * I-Cache snoops remote store.	 This only matters on SMP.  Some multiprocessors
+--- a/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h
++++ b/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h
+@@ -79,4 +79,6 @@
+ #define cpu_scache_line_size()		0
+ #define cpu_has_vz			0
+ 
++#define cpu_use_kmap_coherent		0
++
+ #endif /* __ASM_MACH_BCM47XX_CPU_FEATURE_OVERRIDES_H */
+--- a/arch/mips/mm/c-r4k.c
++++ b/arch/mips/mm/c-r4k.c
+@@ -600,7 +600,7 @@ static inline void local_r4k_flush_cache
+ 		 */
+ 		map_coherent = (cpu_has_dc_aliases &&
+ 				page_mapped(page) && !Page_dcache_dirty(page));
+-		if (map_coherent)
++		if (map_coherent && cpu_use_kmap_coherent)
+ 			vaddr = kmap_coherent(page, addr);
+ 		else
+ 			vaddr = kmap_atomic(page);
+@@ -625,7 +625,7 @@ static inline void local_r4k_flush_cache
+ 	}
+ 
+ 	if (vaddr) {
+-		if (map_coherent)
++		if (map_coherent && cpu_use_kmap_coherent)
+ 			kunmap_coherent();
+ 		else
+ 			kunmap_atomic(vaddr);
+--- a/arch/mips/mm/init.c
++++ b/arch/mips/mm/init.c
+@@ -164,7 +164,7 @@ void copy_user_highpage(struct page *to,
+ 	void *vfrom, *vto;
+ 
+ 	vto = kmap_atomic(to);
+-	if (cpu_has_dc_aliases &&
++	if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
+ 	    page_mapped(from) && !Page_dcache_dirty(from)) {
+ 		vfrom = kmap_coherent(from, vaddr);
+ 		copy_page(vto, vfrom);
+@@ -186,7 +186,7 @@ void copy_to_user_page(struct vm_area_st
+ 	struct page *page, unsigned long vaddr, void *dst, const void *src,
+ 	unsigned long len)
+ {
+-	if (cpu_has_dc_aliases &&
++	if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
+ 	    page_mapped(page) && !Page_dcache_dirty(page)) {
+ 		void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
+ 		memcpy(vto, src, len);
+@@ -204,7 +204,7 @@ void copy_from_user_page(struct vm_area_
+ 	struct page *page, unsigned long vaddr, void *dst, const void *src,
+ 	unsigned long len)
+ {
+-	if (cpu_has_dc_aliases &&
++	if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
+ 	    page_mapped(page) && !Page_dcache_dirty(page)) {
+ 		void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
+ 		memcpy(dst, vfrom, len);
diff --git a/target/linux/brcm47xx/patches-4.4/209-b44-register-adm-switch.patch b/target/linux/brcm47xx/patches-4.4/209-b44-register-adm-switch.patch
new file mode 100644
index 0000000000..115b6aea79
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/209-b44-register-adm-switch.patch
@@ -0,0 +1,122 @@
+From b36f694256f41bc71571f467646d015dda128d14 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sat, 9 Nov 2013 17:03:59 +0100
+Subject: [PATCH 210/210] b44: register adm switch
+
+---
+ drivers/net/ethernet/broadcom/b44.c |   57 +++++++++++++++++++++++++++++++++++
+ drivers/net/ethernet/broadcom/b44.h |    3 ++
+ 2 files changed, 60 insertions(+)
+
+--- a/drivers/net/ethernet/broadcom/b44.c
++++ b/drivers/net/ethernet/broadcom/b44.c
+@@ -31,6 +31,8 @@
+ #include <linux/ssb/ssb.h>
+ #include <linux/slab.h>
+ #include <linux/phy.h>
++#include <linux/platform_device.h>
++#include <linux/platform_data/adm6996-gpio.h>
+ 
+ #include <asm/uaccess.h>
+ #include <asm/io.h>
+@@ -2240,6 +2242,70 @@ static void b44_adjust_link(struct net_d
+ 	}
+ }
+ 
++#ifdef CONFIG_BCM47XX
++static int b44_register_adm_switch(struct b44 *bp)
++{
++	int gpio;
++	struct platform_device *pdev;
++	struct adm6996_gpio_platform_data adm_data = {0};
++	struct platform_device_info info = {0};
++
++	adm_data.model = ADM6996L;
++	gpio = bcm47xx_nvram_gpio_pin("adm_eecs");
++	if (gpio >= 0)
++		adm_data.eecs = gpio;
++	else
++		adm_data.eecs = 2;
++
++	gpio = bcm47xx_nvram_gpio_pin("adm_eesk");
++	if (gpio >= 0)
++		adm_data.eesk = gpio;
++	else
++		adm_data.eesk = 3;
++
++	gpio = bcm47xx_nvram_gpio_pin("adm_eedi");
++	if (gpio >= 0)
++		adm_data.eedi = gpio;
++	else
++		adm_data.eedi = 4;
++
++	gpio = bcm47xx_nvram_gpio_pin("adm_rc");
++	if (gpio >= 0)
++		adm_data.eerc = gpio;
++	else
++		adm_data.eerc = 5;
++
++	info.parent = bp->sdev->dev;
++	info.name = "adm6996_gpio";
++	info.id = -1;
++	info.data = &adm_data;
++	info.size_data = sizeof(adm_data);
++
++	if (!bp->adm_switch) {
++		pdev = platform_device_register_full(&info);
++		if (IS_ERR(pdev))
++			return PTR_ERR(pdev);
++
++		bp->adm_switch = pdev;
++	}
++	return 0;
++}
++static void b44_unregister_adm_switch(struct b44 *bp)
++{
++	if (bp->adm_switch)
++		platform_device_unregister(bp->adm_switch);
++}
++#else
++static int b44_register_adm_switch(struct b44 *bp)
++{
++	return 0;
++}
++static void b44_unregister_adm_switch(struct b44 *bp)
++{
++
++}
++#endif /* CONFIG_BCM47XX */
++
+ static int b44_register_phy_one(struct b44 *bp)
+ {
+ 	struct mii_bus *mii_bus;
+@@ -2283,6 +2349,9 @@ static int b44_register_phy_one(struct b
+ 	if (!bp->mii_bus->phy_map[bp->phy_addr] &&
+ 	    (sprom->boardflags_lo & (B44_BOARDFLAG_ROBO | B44_BOARDFLAG_ADM))) {
+ 
++		if (sprom->boardflags_lo & B44_BOARDFLAG_ADM)
++			b44_register_adm_switch(bp);
++
+ 		dev_info(sdev->dev,
+ 			 "could not find PHY at %i, use fixed one\n",
+ 			 bp->phy_addr);
+@@ -2479,6 +2548,7 @@ static void b44_remove_one(struct ssb_de
+ 	unregister_netdev(dev);
+ 	if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ 		b44_unregister_phy_one(bp);
++	b44_unregister_adm_switch(bp);
+ 	ssb_device_disable(sdev, 0);
+ 	ssb_bus_may_powerdown(sdev->bus);
+ 	netif_napi_del(&bp->napi);
+--- a/drivers/net/ethernet/broadcom/b44.h
++++ b/drivers/net/ethernet/broadcom/b44.h
+@@ -408,6 +408,9 @@ struct b44 {
+ 	struct mii_bus		*mii_bus;
+ 	int			old_link;
+ 	struct mii_if_info	mii_if;
++
++	/* platform device for associated switch */
++	struct platform_device *adm_switch;
+ };
+ 
+ #endif /* _B44_H */
diff --git a/target/linux/brcm47xx/patches-4.4/210-b44_phy_fix.patch b/target/linux/brcm47xx/patches-4.4/210-b44_phy_fix.patch
new file mode 100644
index 0000000000..04f6832169
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/210-b44_phy_fix.patch
@@ -0,0 +1,54 @@
+--- a/drivers/net/ethernet/broadcom/b44.c
++++ b/drivers/net/ethernet/broadcom/b44.c
+@@ -431,10 +431,34 @@ static void b44_wap54g10_workaround(stru
+ error:
+ 	pr_warn("PHY: cannot reset MII transceiver isolate bit\n");
+ }
++
++static void b44_bcm47xx_workarounds(struct b44 *bp)
++{
++	char buf[20];
++	struct ssb_device *sdev = bp->sdev;
++
++	/* Toshiba WRC-1000, Siemens SE505 v1, Askey RT-210W, RT-220W */
++	if (sdev->bus->sprom.board_num == 100) {
++		bp->phy_addr = B44_PHY_ADDR_NO_LOCAL_PHY;
++	} else {
++		/* WL-HDD */
++		if (bcm47xx_nvram_getenv("hardware_version", buf, sizeof(buf)) >= 0 &&
++		    !strncmp(buf, "WL300-", strlen("WL300-"))) {
++			if (sdev->bus->sprom.et0phyaddr == 0 &&
++			    sdev->bus->sprom.et1phyaddr == 1)
++				bp->phy_addr = B44_PHY_ADDR_NO_LOCAL_PHY;
++		}
++	}
++	return;
++}
+ #else
+ static inline void b44_wap54g10_workaround(struct b44 *bp)
+ {
+ }
++
++static inline void b44_bcm47xx_workarounds(struct b44 *bp)
++{
++}
+ #endif
+ 
+ static int b44_setup_phy(struct b44 *bp)
+@@ -443,6 +467,7 @@ static int b44_setup_phy(struct b44 *bp)
+ 	int err;
+ 
+ 	b44_wap54g10_workaround(bp);
++	b44_bcm47xx_workarounds(bp);
+ 
+ 	if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ 		return 0;
+@@ -2170,6 +2195,8 @@ static int b44_get_invariants(struct b44
+ 	 * valid PHY address. */
+ 	bp->phy_addr &= 0x1F;
+ 
++	b44_bcm47xx_workarounds(bp);
++
+ 	memcpy(bp->dev->dev_addr, addr, ETH_ALEN);
+ 
+ 	if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
diff --git a/target/linux/brcm47xx/patches-4.4/280-activate_ssb_support_in_usb.patch b/target/linux/brcm47xx/patches-4.4/280-activate_ssb_support_in_usb.patch
new file mode 100644
index 0000000000..ae6a72de7a
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/280-activate_ssb_support_in_usb.patch
@@ -0,0 +1,25 @@
+This prevents the options from being delete with make kernel_oldconfig.
+---
+ drivers/ssb/Kconfig |    2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/bcma/Kconfig
++++ b/drivers/bcma/Kconfig
+@@ -33,6 +33,7 @@ config BCMA_HOST_PCI
+ config BCMA_HOST_SOC
+ 	bool "Support for BCMA in a SoC"
+ 	depends on BCMA
++	select USB_HCD_BCMA if USB_EHCI_HCD || USB_OHCI_HCD
+ 	help
+ 	  Host interface for a Broadcom AIX bus directly mapped into
+ 	  the memory. This only works with the Broadcom SoCs from the
+--- a/drivers/ssb/Kconfig
++++ b/drivers/ssb/Kconfig
+@@ -156,6 +156,7 @@ config SSB_SFLASH
+ config SSB_EMBEDDED
+ 	bool
+ 	depends on SSB_DRIVER_MIPS && SSB_PCICORE_HOSTMODE
++	select USB_HCD_SSB if USB_EHCI_HCD || USB_OHCI_HCD
+ 	default y
+ 
+ config SSB_DRIVER_EXTIF
diff --git a/target/linux/brcm47xx/patches-4.4/300-fork_cacheflush.patch b/target/linux/brcm47xx/patches-4.4/300-fork_cacheflush.patch
new file mode 100644
index 0000000000..daa2c1adf0
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/300-fork_cacheflush.patch
@@ -0,0 +1,21 @@
+From: Wolfram Joost <dbox2@frokaschwei.de>
+Subject: [PATCH] fork_cacheflush
+
+On ASUS WL-500gP there are many unexpected "Segmentation fault"s that
+seem to be caused by a kernel. They can be avoided by:
+1) Disabling highpage
+2) Using flush_cache_mm in flush_cache_dup_mm
+
+For details see OpenWrt ticket #2035 https://dev.openwrt.org/ticket/2035
+---
+--- a/arch/mips/include/asm/cacheflush.h
++++ b/arch/mips/include/asm/cacheflush.h
+@@ -46,7 +46,7 @@
+ extern void (*flush_cache_all)(void);
+ extern void (*__flush_cache_all)(void);
+ extern void (*flush_cache_mm)(struct mm_struct *mm);
+-#define flush_cache_dup_mm(mm)	do { (void) (mm); } while (0)
++#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
+ extern void (*flush_cache_range)(struct vm_area_struct *vma,
+ 	unsigned long start, unsigned long end);
+ extern void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn);
diff --git a/target/linux/brcm47xx/patches-4.4/310-no_highpage.patch b/target/linux/brcm47xx/patches-4.4/310-no_highpage.patch
new file mode 100644
index 0000000000..bb67417f90
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/310-no_highpage.patch
@@ -0,0 +1,74 @@
+From: Jeff Hansen <jhansen@cardaccess-inc.com>
+Subject: [PATCH] no highpage
+
+On ASUS WL-500gP there are many unexpected "Segmentation fault"s that
+seem to be caused by a kernel. They can be avoided by:
+1) Disabling highpage
+2) Using flush_cache_mm in flush_cache_dup_mm
+
+For details see OpenWrt ticket #2035 https://dev.openwrt.org/ticket/2035
+---
+--- a/arch/mips/include/asm/page.h
++++ b/arch/mips/include/asm/page.h
+@@ -71,6 +71,7 @@ static inline unsigned int page_size_ftl
+ #endif /* CONFIG_MIPS_HUGE_TLB_SUPPORT */
+ 
+ #include <linux/pfn.h>
++#include <asm/cpu-features.h>
+ 
+ extern void build_clear_page(void);
+ extern void build_copy_page(void);
+@@ -105,11 +106,16 @@ static inline void clear_user_page(void
+ 		flush_data_cache_page((unsigned long)addr);
+ }
+ 
+-struct vm_area_struct;
+-extern void copy_user_highpage(struct page *to, struct page *from,
+-	unsigned long vaddr, struct vm_area_struct *vma);
++static inline void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
++	struct page *to)
++{
++	extern void (*flush_data_cache_page)(unsigned long addr);
+ 
+-#define __HAVE_ARCH_COPY_USER_HIGHPAGE
++	copy_page(vto, vfrom);
++	if (!cpu_has_ic_fills_f_dc ||
++	    pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK))
++		flush_data_cache_page((unsigned long)vto);
++}
+ 
+ /*
+  * These are used to make use of C type-checking..
+--- a/arch/mips/mm/init.c
++++ b/arch/mips/mm/init.c
+@@ -158,30 +158,6 @@ void kunmap_coherent(void)
+ 	preempt_enable();
+ }
+ 
+-void copy_user_highpage(struct page *to, struct page *from,
+-	unsigned long vaddr, struct vm_area_struct *vma)
+-{
+-	void *vfrom, *vto;
+-
+-	vto = kmap_atomic(to);
+-	if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
+-	    page_mapped(from) && !Page_dcache_dirty(from)) {
+-		vfrom = kmap_coherent(from, vaddr);
+-		copy_page(vto, vfrom);
+-		kunmap_coherent();
+-	} else {
+-		vfrom = kmap_atomic(from);
+-		copy_page(vto, vfrom);
+-		kunmap_atomic(vfrom);
+-	}
+-	if ((!cpu_has_ic_fills_f_dc) ||
+-	    pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK))
+-		flush_data_cache_page((unsigned long)vto);
+-	kunmap_atomic(vto);
+-	/* Make sure this page is cleared on other CPU's too before using it */
+-	smp_wmb();
+-}
+-
+ void copy_to_user_page(struct vm_area_struct *vma,
+ 	struct page *page, unsigned long vaddr, void *dst, const void *src,
+ 	unsigned long len)
diff --git a/target/linux/brcm47xx/patches-4.4/320-MIPS-BCM47XX-Devices-database-update-for-4.x.patch b/target/linux/brcm47xx/patches-4.4/320-MIPS-BCM47XX-Devices-database-update-for-4.x.patch
new file mode 100644
index 0000000000..68214c8452
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/320-MIPS-BCM47XX-Devices-database-update-for-4.x.patch
@@ -0,0 +1,223 @@
+--- a/arch/mips/bcm47xx/board.c
++++ b/arch/mips/bcm47xx/board.c
+@@ -140,6 +140,7 @@ struct bcm47xx_board_type_list2 bcm47xx_
+ 	{{BCM47XX_BOARD_LINKSYS_WRT300NV11, "Linksys WRT300N V1.1"}, "WRT300N", "1.1"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT310NV1, "Linksys WRT310N V1"}, "WRT310N", "1.0"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT310NV2, "Linksys WRT310N V2"}, "WRT310N", "2.0"},
++	{{BCM47XX_BOARD_LINKSYS_WRT320N_V1, "Linksys WRT320N V1"}, "WRT320N", "1.0"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT54G3GV2, "Linksys WRT54G3GV2-VF"}, "WRT54G3GV2-VF", "1.0"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT610NV1, "Linksys WRT610N V1"}, "WRT610N", "1.0"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT610NV2, "Linksys WRT610N V2"}, "WRT610N", "2.0"},
+@@ -150,9 +151,12 @@ struct bcm47xx_board_type_list2 bcm47xx_
+ static const
+ struct bcm47xx_board_type_list1 bcm47xx_board_list_board_id[] __initconst = {
+ 	{{BCM47XX_BOARD_LUXUL_XWR_1750_V1, "Luxul XWR-1750 V1"}, "luxul_xwr1750_v1"},
++	{{BCM47XX_BOARD_NETGEAR_R6300_V1, "Netgear R6300 V1"}, "U12H218T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WGR614V8, "Netgear WGR614 V8"}, "U12H072T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WGR614V9, "Netgear WGR614 V9"}, "U12H094T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WGR614_V10, "Netgear WGR614 V10"}, "U12H139T01_NETGEAR"},
++	{{BCM47XX_BOARD_NETGEAR_WN2500RP_V1, "Netgear WN2500RP V1"}, "U12H197T00_NETGEAR"},
++	{{BCM47XX_BOARD_NETGEAR_WN2500RP_V2, "Netgear WN2500RP V2"}, "U12H294T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNDR3300, "Netgear WNDR3300"}, "U12H093T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNDR3400V1, "Netgear WNDR3400 V1"}, "U12H155T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNDR3400V2, "Netgear WNDR3400 V2"}, "U12H187T00_NETGEAR"},
+@@ -162,6 +166,7 @@ struct bcm47xx_board_type_list1 bcm47xx_
+ 	{{BCM47XX_BOARD_NETGEAR_WNDR4000, "Netgear WNDR4000"}, "U12H181T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNDR4500V1, "Netgear WNDR4500 V1"}, "U12H189T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNDR4500V2, "Netgear WNDR4500 V2"}, "U12H224T00_NETGEAR"},
++	{{BCM47XX_BOARD_NETGEAR_WNR1000_V3, "Netgear WNR1000 V3"}, "U12H139T50_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"},
+--- a/arch/mips/bcm47xx/buttons.c
++++ b/arch/mips/bcm47xx/buttons.c
+@@ -20,6 +20,12 @@
+ /* Asus */
+ 
+ static const struct gpio_keys_button
++bcm47xx_buttons_asus_rtn10u[] __initconst = {
++	BCM47XX_GPIO_KEY(20, KEY_WPS_BUTTON),
++	BCM47XX_GPIO_KEY(21, KEY_RESTART),
++};
++
++static const struct gpio_keys_button
+ bcm47xx_buttons_asus_rtn12[] __initconst = {
+ 	BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON),
+ 	BCM47XX_GPIO_KEY(1, KEY_RESTART),
+@@ -270,6 +276,18 @@ bcm47xx_buttons_linksys_wrt310nv1[] __in
+ };
+ 
+ static const struct gpio_keys_button
++bcm47xx_buttons_linksys_wrt310n_v2[] __initconst = {
++	BCM47XX_GPIO_KEY(5, KEY_WPS_BUTTON),
++	BCM47XX_GPIO_KEY(6, KEY_RESTART),
++};
++
++static const struct gpio_keys_button
++bcm47xx_buttons_linksys_wrt320n_v1[] __initconst = {
++	BCM47XX_GPIO_KEY(5, KEY_WPS_BUTTON),
++	BCM47XX_GPIO_KEY(8, KEY_RESTART),
++};
++
++static const struct gpio_keys_button
+ bcm47xx_buttons_linksys_wrt54g3gv2[] __initconst = {
+ 	BCM47XX_GPIO_KEY(5, KEY_WIMAX),
+ 	BCM47XX_GPIO_KEY(6, KEY_RESTART),
+@@ -333,6 +351,17 @@ bcm47xx_buttons_motorola_wr850gv2v3[] __
+ /* Netgear */
+ 
+ static const struct gpio_keys_button
++bcm47xx_buttons_netgear_r6300_v1[] __initconst = {
++	BCM47XX_GPIO_KEY(6, KEY_RESTART),
++};
++
++static const struct gpio_keys_button
++bcm47xx_buttons_netgear_wn2500rp_v1[] __initconst = {
++	BCM47XX_GPIO_KEY(12, KEY_RESTART),
++	BCM47XX_GPIO_KEY(31, KEY_WPS_BUTTON),
++};
++
++static const struct gpio_keys_button
+ bcm47xx_buttons_netgear_wndr3400v1[] __initconst = {
+ 	BCM47XX_GPIO_KEY(4, KEY_RESTART),
+ 	BCM47XX_GPIO_KEY(6, KEY_WPS_BUTTON),
+@@ -360,6 +389,11 @@ bcm47xx_buttons_netgear_wndr4500v1[] __i
+ };
+ 
+ static const struct gpio_keys_button
++bcm47xx_buttons_netgear_wnr1000_v3[] __initconst = {
++	BCM47XX_GPIO_KEY(3, KEY_RESTART),
++};
++
++static const struct gpio_keys_button
+ bcm47xx_buttons_netgear_wnr3500lv1[] __initconst = {
+ 	BCM47XX_GPIO_KEY(4, KEY_RESTART),
+ 	BCM47XX_GPIO_KEY(6, KEY_WPS_BUTTON),
+@@ -413,6 +447,9 @@ int __init bcm47xx_buttons_register(void
+ 	int err;
+ 
+ 	switch (board) {
++	case BCM47XX_BOARD_ASUS_RTN10U:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_rtn10u);
++		break;
+ 	case BCM47XX_BOARD_ASUS_RTN12:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_rtn12);
+ 		break;
+@@ -543,6 +580,12 @@ int __init bcm47xx_buttons_register(void
+ 	case BCM47XX_BOARD_LINKSYS_WRT310NV1:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt310nv1);
+ 		break;
++	case BCM47XX_BOARD_LINKSYS_WRT310NV2:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt310n_v2);
++		break;
++	case BCM47XX_BOARD_LINKSYS_WRT320N_V1:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt320n_v1);
++		break;
+ 	case BCM47XX_BOARD_LINKSYS_WRT54G3GV2:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt54g3gv2);
+ 		break;
+@@ -579,6 +622,12 @@ int __init bcm47xx_buttons_register(void
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_motorola_wr850gv2v3);
+ 		break;
+ 
++	case BCM47XX_BOARD_NETGEAR_R6300_V1:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_r6300_v1);
++		break;
++	case BCM47XX_BOARD_NETGEAR_WN2500RP_V1:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wn2500rp_v1);
++		break;
+ 	case BCM47XX_BOARD_NETGEAR_WNDR3400V1:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr3400v1);
+ 		break;
+@@ -591,6 +640,9 @@ int __init bcm47xx_buttons_register(void
+ 	case BCM47XX_BOARD_NETGEAR_WNDR4500V1:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr4500v1);
+ 		break;
++	case BCM47XX_BOARD_NETGEAR_WNR1000_V3:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wnr1000_v3);
++		break;
+ 	case BCM47XX_BOARD_NETGEAR_WNR3500L:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wnr3500lv1);
+ 		break;
+--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
++++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
+@@ -71,6 +71,7 @@ enum bcm47xx_board {
+ 	BCM47XX_BOARD_LINKSYS_WRT300NV11,
+ 	BCM47XX_BOARD_LINKSYS_WRT310NV1,
+ 	BCM47XX_BOARD_LINKSYS_WRT310NV2,
++	BCM47XX_BOARD_LINKSYS_WRT320N_V1,
+ 	BCM47XX_BOARD_LINKSYS_WRT54G3GV2,
+ 	BCM47XX_BOARD_LINKSYS_WRT54G_TYPE_0101,
+ 	BCM47XX_BOARD_LINKSYS_WRT54G_TYPE_0467,
+@@ -88,9 +89,12 @@ enum bcm47xx_board {
+ 	BCM47XX_BOARD_MOTOROLA_WR850GP,
+ 	BCM47XX_BOARD_MOTOROLA_WR850GV2V3,
+ 
++	BCM47XX_BOARD_NETGEAR_R6300_V1,
+ 	BCM47XX_BOARD_NETGEAR_WGR614V8,
+ 	BCM47XX_BOARD_NETGEAR_WGR614V9,
+ 	BCM47XX_BOARD_NETGEAR_WGR614_V10,
++	BCM47XX_BOARD_NETGEAR_WN2500RP_V1,
++	BCM47XX_BOARD_NETGEAR_WN2500RP_V2,
+ 	BCM47XX_BOARD_NETGEAR_WNDR3300,
+ 	BCM47XX_BOARD_NETGEAR_WNDR3400V1,
+ 	BCM47XX_BOARD_NETGEAR_WNDR3400V2,
+@@ -100,6 +104,7 @@ enum bcm47xx_board {
+ 	BCM47XX_BOARD_NETGEAR_WNDR4000,
+ 	BCM47XX_BOARD_NETGEAR_WNDR4500V1,
+ 	BCM47XX_BOARD_NETGEAR_WNDR4500V2,
++	BCM47XX_BOARD_NETGEAR_WNR1000_V3,
+ 	BCM47XX_BOARD_NETGEAR_WNR2000,
+ 	BCM47XX_BOARD_NETGEAR_WNR3500L,
+ 	BCM47XX_BOARD_NETGEAR_WNR3500U,
+--- a/arch/mips/bcm47xx/leds.c
++++ b/arch/mips/bcm47xx/leds.c
+@@ -29,6 +29,14 @@
+ /* Asus */
+ 
+ static const struct gpio_led
++bcm47xx_leds_asus_rtn10u[] __initconst = {
++	BCM47XX_GPIO_LED(5, "green", "wlan", 0, LEDS_GPIO_DEFSTATE_OFF),
++	BCM47XX_GPIO_LED(6, "green", "power", 1, LEDS_GPIO_DEFSTATE_ON),
++	BCM47XX_GPIO_LED(7, "green", "wps", 0, LEDS_GPIO_DEFSTATE_OFF),
++	BCM47XX_GPIO_LED(8, "green", "usb", 0, LEDS_GPIO_DEFSTATE_OFF),
++};
++
++static const struct gpio_led
+ bcm47xx_leds_asus_rtn12[] __initconst = {
+ 	BCM47XX_GPIO_LED(2, "unk", "power", 1, LEDS_GPIO_DEFSTATE_ON),
+ 	BCM47XX_GPIO_LED(7, "unk", "wlan", 0, LEDS_GPIO_DEFSTATE_OFF),
+@@ -313,6 +321,13 @@ bcm47xx_leds_linksys_wrt310nv1[] __initc
+ };
+ 
+ static const struct gpio_led
++bcm47xx_leds_linksys_wrt320n_v1[] __initconst = {
++	BCM47XX_GPIO_LED(1, "blue", "wlan", 1, LEDS_GPIO_DEFSTATE_OFF),
++	BCM47XX_GPIO_LED(2, "blue", "power", 0, LEDS_GPIO_DEFSTATE_ON),
++	BCM47XX_GPIO_LED(4, "amber", "wps", 1, LEDS_GPIO_DEFSTATE_OFF),
++};
++
++static const struct gpio_led
+ bcm47xx_leds_linksys_wrt54g_generic[] __initconst = {
+ 	BCM47XX_GPIO_LED(0, "unk", "dmz", 1, LEDS_GPIO_DEFSTATE_OFF),
+ 	BCM47XX_GPIO_LED(1, "unk", "power", 0, LEDS_GPIO_DEFSTATE_ON),
+@@ -478,6 +493,9 @@ void __init bcm47xx_leds_register(void)
+ 	enum bcm47xx_board board = bcm47xx_board_get();
+ 
+ 	switch (board) {
++	case BCM47XX_BOARD_ASUS_RTN10U:
++		bcm47xx_set_pdata(bcm47xx_leds_asus_rtn10u);
++		break;
+ 	case BCM47XX_BOARD_ASUS_RTN12:
+ 		bcm47xx_set_pdata(bcm47xx_leds_asus_rtn12);
+ 		break;
+@@ -611,6 +629,9 @@ void __init bcm47xx_leds_register(void)
+ 	case BCM47XX_BOARD_LINKSYS_WRT310NV1:
+ 		bcm47xx_set_pdata(bcm47xx_leds_linksys_wrt310nv1);
+ 		break;
++	case BCM47XX_BOARD_LINKSYS_WRT320N_V1:
++		bcm47xx_set_pdata(bcm47xx_leds_linksys_wrt320n_v1);
++		break;
+ 	case BCM47XX_BOARD_LINKSYS_WRT54G3GV2:
+ 		bcm47xx_set_pdata(bcm47xx_leds_linksys_wrt54g3gv2);
+ 		break;
diff --git a/target/linux/brcm47xx/patches-4.4/400-mtd-bcm47xxpart-get-nvram.patch b/target/linux/brcm47xx/patches-4.4/400-mtd-bcm47xxpart-get-nvram.patch
new file mode 100644
index 0000000000..de109e35f4
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/400-mtd-bcm47xxpart-get-nvram.patch
@@ -0,0 +1,34 @@
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -100,6 +100,7 @@ static int bcm47xxpart_parse(struct mtd_
+ 	int last_trx_part = -1;
+ 	int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
+ 	int err;
++	bool found_nvram = false;
+ 
+ 	/*
+ 	 * Some really old flashes (like AT45DB*) had smaller erasesize-s, but
+@@ -306,12 +307,23 @@ static int bcm47xxpart_parse(struct mtd_
+ 		if (buf[0] == NVRAM_HEADER) {
+ 			bcm47xxpart_add_part(&parts[curr_part++], "nvram",
+ 					     master->size - blocksize, 0);
++			found_nvram = true;
+ 			break;
+ 		}
+ 	}
+ 
+ 	kfree(buf);
+ 
++	if (!found_nvram) {
++		pr_err("can not find a nvram partition reserve last block\n");
++		bcm47xxpart_add_part(&parts[curr_part++], "nvram_guess",
++				     master->size - blocksize * 2, MTD_WRITEABLE);
++		for (i = 0; i < curr_part; i++) {
++			if (parts[i].size + parts[i].offset == master->size)
++				parts[i].offset -= blocksize * 2;
++		}
++	}
++
+ 	/*
+ 	 * Assume that partitions end at the beginning of the one they are
+ 	 * followed by.
diff --git a/target/linux/brcm47xx/patches-4.4/610-pci_ide_fix.patch b/target/linux/brcm47xx/patches-4.4/610-pci_ide_fix.patch
new file mode 100644
index 0000000000..c5a51add95
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/610-pci_ide_fix.patch
@@ -0,0 +1,41 @@
+From: b.sander
+Subject: [PATCH] pci: IDE fix
+
+These are standard probing messages when using pdc202xx_old:
+pdc202xx_old 0000:00:01.0: IDE controller (0x105a:0x0d30 rev 0x02)
+PCI: Enabling device 0000:00:01.0 (0004 -> 0007)
+PCI: Fixing up device 0000:00:01.0
+0000:00:01.0: (U)DMA Burst Bit DISABLED Primary PCI Mode Secondary PCI Mode.
+0000:00:01.0: FORCING BURST BIT 0x00->0x01 ACTIVE
+pdc202xx_old 0000:00:01.0: 100% native mode on irq 6
+
+With the default MAX_HWIFS value after above we get:
+    ide2: BM-DMA at 0x0400-0x0407
+    ide3: BM-DMA at 0x0408-0x040f
+Probing IDE interface ide2...
+hde: CF500, CFA DISK drive
+
+As you can see it's ide2 + ide3 and hde.
+
+With this patch applied we get:
+    ide0: BM-DMA at 0x0400-0x0407
+    ide1: BM-DMA at 0x0408-0x040f
+Probing IDE interface ide0...
+hda: CF500, CFA DISK drive
+
+This fixes OpenWrt ticket #7061: https://dev.openwrt.org/ticket/7061
+---
+--- a/include/linux/ide.h
++++ b/include/linux/ide.h
+@@ -204,7 +204,11 @@ static inline void ide_std_init_ports(st
+ 	hw->io_ports.ctl_addr = ctl_addr;
+ }
+ 
++#if defined CONFIG_BCM47XX
++# define MAX_HWIFS	2
++#else
+ #define MAX_HWIFS	10
++#endif
+ 
+ /*
+  * Now for the data we need to maintain per-drive:  ide_drive_t
diff --git a/target/linux/brcm47xx/patches-4.4/791-tg3-no-pci-sleep.patch b/target/linux/brcm47xx/patches-4.4/791-tg3-no-pci-sleep.patch
new file mode 100644
index 0000000000..35a816d8c2
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/791-tg3-no-pci-sleep.patch
@@ -0,0 +1,17 @@
+When the Ethernet controller is powered down and someone wants to 
+access the mdio bus like the witch driver (b53) the system crashed if 
+PCI_D3hot was set before. This patch deactivates this power sawing mode 
+when a switch driver is in use.
+
+--- a/drivers/net/ethernet/broadcom/tg3.c
++++ b/drivers/net/ethernet/broadcom/tg3.c
+@@ -4263,7 +4263,8 @@ static int tg3_power_down_prepare(struct
+ static void tg3_power_down(struct tg3 *tp)
+ {
+ 	pci_wake_from_d3(tp->pdev, tg3_flag(tp, WOL_ENABLE));
+-	pci_set_power_state(tp->pdev, PCI_D3hot);
++	if (!tg3_flag(tp, ROBOSWITCH))
++		pci_set_power_state(tp->pdev, PCI_D3hot);
+ }
+ 
+ static void tg3_aux_stat_to_speed_duplex(struct tg3 *tp, u32 val, u16 *speed, u8 *duplex)
diff --git a/target/linux/brcm47xx/patches-4.4/800-bcma-add-table-of-serial-flashes-with-smaller-blocks.patch b/target/linux/brcm47xx/patches-4.4/800-bcma-add-table-of-serial-flashes-with-smaller-blocks.patch
new file mode 100644
index 0000000000..99d909bc03
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/800-bcma-add-table-of-serial-flashes-with-smaller-blocks.patch
@@ -0,0 +1,73 @@
+From 597715c61ae75a05ab3310a34ff3857a006f0f63 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Thu, 20 Nov 2014 21:32:42 +0100
+Subject: [PATCH] bcma: add table of serial flashes with smaller blocks
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ drivers/bcma/driver_chipcommon_sflash.c | 29 +++++++++++++++++++++++++++++
+ 1 file changed, 29 insertions(+)
+
+--- a/drivers/bcma/driver_chipcommon_sflash.c
++++ b/drivers/bcma/driver_chipcommon_sflash.c
+@@ -9,6 +9,7 @@
+ 
+ #include <linux/platform_device.h>
+ #include <linux/bcma/bcma.h>
++#include <bcm47xx_board.h>
+ 
+ static struct resource bcma_sflash_resource = {
+ 	.name	= "bcma_sflash",
+@@ -41,6 +42,13 @@ static const struct bcma_sflash_tbl_e bc
+ 	{ NULL },
+ };
+ 
++/* Some devices use smaller blocks (and have more of them) */
++static const struct bcma_sflash_tbl_e bcma_sflash_st_shrink_tbl[] = {
++	{ "M25P16", 0x14, 0x1000, 512, },
++	{ "M25P32", 0x15, 0x1000, 1024, },
++	{ NULL },
++};
++
+ static const struct bcma_sflash_tbl_e bcma_sflash_sst_tbl[] = {
+ 	{ "SST25WF512", 1, 0x1000, 16, },
+ 	{ "SST25VF512", 0x48, 0x1000, 16, },
+@@ -84,6 +92,24 @@ static void bcma_sflash_cmd(struct bcma_
+ 	bcma_err(cc->core->bus, "SFLASH control command failed (timeout)!\n");
+ }
+ 
++const struct bcma_sflash_tbl_e *bcma_sflash_shrink_flash(u32 id)
++{
++	enum bcm47xx_board board = bcm47xx_board_get();
++	const struct bcma_sflash_tbl_e *e;
++
++	switch (board) {
++	case BCM47XX_BOARD_NETGEAR_WGR614_V10:
++	case BCM47XX_BOARD_NETGEAR_WNR1000_V3:
++		for (e = bcma_sflash_st_shrink_tbl; e->name; e++) {
++			if (e->id == id)
++				return e;
++		}
++		return NULL;
++	default:
++		return NULL;
++	}
++}
++
+ /* Initialize serial flash access */
+ int bcma_sflash_init(struct bcma_drv_cc *cc)
+ {
+@@ -114,6 +140,10 @@ int bcma_sflash_init(struct bcma_drv_cc
+ 		case 0x13:
+ 			return -ENOTSUPP;
+ 		default:
++			e = bcma_sflash_shrink_flash(id);
++			if (e)
++				break;
++
+ 			for (e = bcma_sflash_st_tbl; e->name; e++) {
+ 				if (e->id == id)
+ 					break;
diff --git a/target/linux/brcm47xx/patches-4.4/820-wgt634u-nvram-fix.patch b/target/linux/brcm47xx/patches-4.4/820-wgt634u-nvram-fix.patch
new file mode 100644
index 0000000000..6e10311d0c
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/820-wgt634u-nvram-fix.patch
@@ -0,0 +1,293 @@
+The Netgear wgt634u uses a different format for storing the 
+configuration. This patch is needed to read out the correct 
+configuration. The cfe_env.c file uses a different method way to read 
+out the configuration than the in kernel cfe config reader.
+
+--- a/drivers/firmware/broadcom/Makefile
++++ b/drivers/firmware/broadcom/Makefile
+@@ -1 +1 @@
+-obj-$(CONFIG_BCM47XX_NVRAM)		+= bcm47xx_nvram.o
++obj-$(CONFIG_BCM47XX_NVRAM)		+= bcm47xx_nvram.o cfe_env.o
+--- /dev/null
++++ b/drivers/firmware/broadcom/cfe_env.c
+@@ -0,0 +1,228 @@
++/*
++ * CFE environment variable access
++ *
++ * Copyright 2001-2003, Broadcom Corporation
++ * Copyright 2006, Felix Fietkau <nbd@openwrt.org>
++ * 
++ * 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 2 of the  License, or (at your
++ * option) any later version.
++ */
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/string.h>
++#include <asm/io.h>
++#include <asm/uaccess.h>
++
++#define NVRAM_SIZE       (0x1ff0)
++static char _nvdata[NVRAM_SIZE];
++static char _valuestr[256];
++
++/*
++ * TLV types.  These codes are used in the "type-length-value"
++ * encoding of the items stored in the NVRAM device (flash or EEPROM)
++ *
++ * The layout of the flash/nvram is as follows:
++ *
++ * <type> <length> <data ...> <type> <length> <data ...> <type_end>
++ *
++ * The type code of "ENV_TLV_TYPE_END" marks the end of the list.
++ * The "length" field marks the length of the data section, not
++ * including the type and length fields.
++ *
++ * Environment variables are stored as follows:
++ *
++ * <type_env> <length> <flags> <name> = <value>
++ *
++ * If bit 0 (low bit) is set, the length is an 8-bit value.
++ * If bit 0 (low bit) is clear, the length is a 16-bit value
++ * 
++ * Bit 7 set indicates "user" TLVs.  In this case, bit 0 still
++ * indicates the size of the length field.  
++ *
++ * Flags are from the constants below:
++ *
++ */
++#define ENV_LENGTH_16BITS	0x00	/* for low bit */
++#define ENV_LENGTH_8BITS	0x01
++
++#define ENV_TYPE_USER		0x80
++
++#define ENV_CODE_SYS(n,l) (((n)<<1)|(l))
++#define ENV_CODE_USER(n,l) ((((n)<<1)|(l)) | ENV_TYPE_USER)
++
++/*
++ * The actual TLV types we support
++ */
++
++#define ENV_TLV_TYPE_END	0x00	
++#define ENV_TLV_TYPE_ENV	ENV_CODE_SYS(0,ENV_LENGTH_8BITS)
++
++/*
++ * Environment variable flags 
++ */
++
++#define ENV_FLG_NORMAL		0x00	/* normal read/write */
++#define ENV_FLG_BUILTIN		0x01	/* builtin - not stored in flash */
++#define ENV_FLG_READONLY	0x02	/* read-only - cannot be changed */
++
++#define ENV_FLG_MASK		0xFF	/* mask of attributes we keep */
++#define ENV_FLG_ADMIN		0x100	/* lets us internally override permissions */
++
++
++/*  *********************************************************************
++    *  _nvram_read(buffer,offset,length)
++    *  
++    *  Read data from the NVRAM device
++    *  
++    *  Input parameters: 
++    *  	   buffer - destination buffer
++    *  	   offset - offset of data to read
++    *  	   length - number of bytes to read
++    *  	   
++    *  Return value:
++    *  	   number of bytes read, or <0 if error occured
++    ********************************************************************* */
++static int
++_nvram_read(unsigned char *nv_buf, unsigned char *buffer, int offset, int length)
++{
++    int i;
++    if (offset > NVRAM_SIZE)
++	return -1; 
++
++    for ( i = 0; i < length; i++) {
++	buffer[i] = ((volatile unsigned char*)nv_buf)[offset + i];
++    }
++    return length;
++}
++
++
++static char*
++_strnchr(const char *dest,int c,size_t cnt)
++{
++	while (*dest && (cnt > 0)) {
++	if (*dest == c) return (char *) dest;
++	dest++;
++	cnt--;
++	}
++	return NULL;
++}
++
++
++
++/*
++ * Core support API: Externally visible.
++ */
++
++/*
++ * Get the value of an NVRAM variable
++ * @param	name	name of variable to get
++ * @return	value of variable or NULL if undefined
++ */
++
++char *cfe_env_get(unsigned char *nv_buf, const char *name)
++{
++    int size;
++    unsigned char *buffer;
++    unsigned char *ptr;
++    unsigned char *envval;
++    unsigned int reclen;
++    unsigned int rectype;
++    int offset;
++    int flg;
++    
++	if (!strcmp(name, "nvram_type"))
++		return "cfe";
++	
++    size = NVRAM_SIZE;
++    buffer = &_nvdata[0];
++
++    ptr = buffer;
++    offset = 0;
++
++    /* Read the record type and length */
++    if (_nvram_read(nv_buf, ptr,offset,1) != 1) {
++	goto error;
++    }
++    
++    while ((*ptr != ENV_TLV_TYPE_END)  && (size > 1)) {
++
++	/* Adjust pointer for TLV type */
++	rectype = *(ptr);
++	offset++;
++	size--;
++
++	/* 
++	 * Read the length.  It can be either 1 or 2 bytes
++	 * depending on the code 
++	 */
++	if (rectype & ENV_LENGTH_8BITS) {
++	    /* Read the record type and length - 8 bits */
++	    if (_nvram_read(nv_buf, ptr,offset,1) != 1) {
++		goto error;
++	    }
++	    reclen = *(ptr);
++	    size--;
++	    offset++;
++	}
++	else {
++	    /* Read the record type and length - 16 bits, MSB first */
++	    if (_nvram_read(nv_buf, ptr,offset,2) != 2) {
++		goto error;
++	    }
++	    reclen = (((unsigned int) *(ptr)) << 8) + (unsigned int) *(ptr+1);
++	    size -= 2;
++	    offset += 2;
++	}
++
++	if (reclen > size)
++	    break;	/* should not happen, bad NVRAM */
++
++	switch (rectype) {
++	    case ENV_TLV_TYPE_ENV:
++		/* Read the TLV data */
++		if (_nvram_read(nv_buf, ptr,offset,reclen) != reclen)
++		    goto error;
++		flg = *ptr++;
++		envval = (unsigned char *) _strnchr(ptr,'=',(reclen-1));
++		if (envval) {
++		    *envval++ = '\0';
++		    memcpy(_valuestr,envval,(reclen-1)-(envval-ptr));
++		    _valuestr[(reclen-1)-(envval-ptr)] = '\0';
++#if 0			
++		    printk(KERN_INFO "NVRAM:%s=%s\n", ptr, _valuestr);
++#endif
++		    if(!strcmp(ptr, name)){
++			return _valuestr;
++		    }
++		    if((strlen(ptr) > 1) && !strcmp(&ptr[1], name))
++			return _valuestr;
++		}
++		break;
++		
++	    default: 
++		/* Unknown TLV type, skip it. */
++		break;
++	    }
++
++	/*
++	 * Advance to next TLV 
++	 */
++		
++	size -= (int)reclen;
++	offset += reclen;
++
++	/* Read the next record type */
++	ptr = buffer;
++	if (_nvram_read(nv_buf, ptr,offset,1) != 1)
++	    goto error;
++	}
++
++error:
++    return NULL;
++
++}
++
+--- a/drivers/firmware/broadcom/bcm47xx_nvram.c
++++ b/drivers/firmware/broadcom/bcm47xx_nvram.c
+@@ -37,6 +37,8 @@ struct nvram_header {
+ static char nvram_buf[NVRAM_SPACE];
+ static size_t nvram_len;
+ static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
++static int cfe_env;
++extern char *cfe_env_get(char *nv_buf, const char *name);
+ 
+ static u32 find_nvram_size(void __iomem *end)
+ {
+@@ -66,6 +68,26 @@ static int nvram_find_and_copy(void __io
+ 		return -EEXIST;
+ 	}
+ 
++	cfe_env = 0;
++
++	/* XXX: hack for supporting the CFE environment stuff on WGT634U */
++	if (lim >= 8 * 1024 * 1024) {
++		src = (u32 *)(iobase + 8 * 1024 * 1024 - 0x2000);
++		dst = (u32 *)nvram_buf;
++
++		if ((*src & 0xff00ff) == 0x000001) {
++			printk("early_nvram_init: WGT634U NVRAM found.\n");
++
++			for (i = 0; i < 0x1ff0; i++) {
++				if (*src == 0xFFFFFFFF)
++					break;
++				*dst++ = *src++;
++			}
++			cfe_env = 1;
++			return 0;
++		}
++	}
++
+ 	/* TODO: when nvram is on nand flash check for bad blocks first. */
+ 	off = FLASH_MIN;
+ 	while (off <= lim) {
+@@ -180,6 +202,13 @@ int bcm47xx_nvram_getenv(const char *nam
+ 	if (!name)
+ 		return -EINVAL;
+ 
++	if (cfe_env) {
++		value = cfe_env_get(nvram_buf, name);
++		if (!value)
++			return -ENOENT;
++		return snprintf(val, val_len, "%s", value);
++	}
++
+ 	if (!nvram_len) {
+ 		err = nvram_init();
+ 		if (err)
diff --git a/target/linux/brcm47xx/patches-4.4/830-huawei_e970_support.patch b/target/linux/brcm47xx/patches-4.4/830-huawei_e970_support.patch
new file mode 100644
index 0000000000..f67c5dde1c
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/830-huawei_e970_support.patch
@@ -0,0 +1,101 @@
+--- a/arch/mips/bcm47xx/setup.c
++++ b/arch/mips/bcm47xx/setup.c
+@@ -36,6 +36,7 @@
+ #include <linux/ssb/ssb.h>
+ #include <linux/ssb/ssb_embedded.h>
+ #include <linux/bcma/bcma_soc.h>
++#include <linux/old_gpio_wdt.h>
+ #include <asm/bootinfo.h>
+ #include <asm/idle.h>
+ #include <asm/prom.h>
+@@ -262,6 +263,33 @@ static struct fixed_phy_status bcm47xx_f
+ 	.duplex	= DUPLEX_FULL,
+ };
+ 
++static struct gpio_wdt_platform_data gpio_wdt_data;
++
++static struct platform_device gpio_wdt_device = {
++	.name			= "gpio-wdt",
++	.id			= 0,
++	.dev			= {
++		.platform_data	= &gpio_wdt_data,
++	},
++};
++
++static int __init bcm47xx_register_gpio_watchdog(void)
++{
++	enum bcm47xx_board board = bcm47xx_board_get();
++
++	switch (board) {
++	case BCM47XX_BOARD_HUAWEI_E970:
++		pr_info("bcm47xx: detected Huawei E970 or similar, starting early gpio_wdt timer\n");
++		gpio_wdt_data.gpio = 7;
++		gpio_wdt_data.interval = HZ;
++		gpio_wdt_data.first_interval = HZ / 5;
++		return platform_device_register(&gpio_wdt_device);
++	default:
++		/* Nothing to do */
++		return 0;
++	}
++}
++
+ static int __init bcm47xx_register_bus_complete(void)
+ {
+ 	switch (bcm47xx_bus_type) {
+@@ -281,6 +309,7 @@ static int __init bcm47xx_register_bus_c
+ 	bcm47xx_workarounds();
+ 
+ 	fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status, -1);
++	bcm47xx_register_gpio_watchdog();
+ 	return 0;
+ }
+ device_initcall(bcm47xx_register_bus_complete);
+--- a/arch/mips/configs/bcm47xx_defconfig
++++ b/arch/mips/configs/bcm47xx_defconfig
+@@ -67,6 +67,7 @@ CONFIG_HW_RANDOM=y
+ CONFIG_GPIO_SYSFS=y
+ CONFIG_WATCHDOG=y
+ CONFIG_BCM47XX_WDT=y
++CONFIG_GPIO_WDT=y
+ CONFIG_SSB_DEBUG=y
+ CONFIG_SSB_DRIVER_GIGE=y
+ CONFIG_BCMA_DRIVER_GMAC_CMN=y
+--- a/drivers/ssb/embedded.c
++++ b/drivers/ssb/embedded.c
+@@ -34,11 +34,36 @@ int ssb_watchdog_timer_set(struct ssb_bu
+ }
+ EXPORT_SYMBOL(ssb_watchdog_timer_set);
+ 
++#ifdef CONFIG_BCM47XX
++#include <bcm47xx_board.h>
++
++static bool ssb_watchdog_supported(void)
++{
++	enum bcm47xx_board board = bcm47xx_board_get();
++
++	/* The Huawei E970 has a hardware watchdog using a GPIO */
++	switch (board) {
++	case BCM47XX_BOARD_HUAWEI_E970:
++		return false;
++	default:
++		return true;
++	}
++}
++#else
++static bool ssb_watchdog_supported(void)
++{
++	return true;
++}
++#endif
++
+ int ssb_watchdog_register(struct ssb_bus *bus)
+ {
+ 	struct bcm47xx_wdt wdt = {};
+ 	struct platform_device *pdev;
+ 
++	if (!ssb_watchdog_supported())
++		return 0;
++
+ 	if (ssb_chipco_available(&bus->chipco)) {
+ 		wdt.driver_data = &bus->chipco;
+ 		wdt.timer_set = ssb_chipco_watchdog_timer_set_wdt;
diff --git a/target/linux/brcm47xx/patches-4.4/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch b/target/linux/brcm47xx/patches-4.4/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch
new file mode 100644
index 0000000000..d7d2d7e59a
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch
@@ -0,0 +1,30 @@
+From 5c81397a0147ea59c778d1de14ef54e2268221f6 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Wed, 8 Apr 2015 06:58:11 +0200
+Subject: [PATCH] ssb: reject PCI writes setting CardBus bridge resources
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+If SoC has a CardBus we can set resources of device at slot 1 only. It's
+impossigle to set bridge resources as it simply overwrites device 1
+configuration and usually results in Data bus error-s.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ drivers/ssb/driver_pcicore.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/ssb/driver_pcicore.c
++++ b/drivers/ssb/driver_pcicore.c
+@@ -164,6 +164,10 @@ static int ssb_extpci_write_config(struc
+ 	SSB_WARN_ON(!pc->hostmode);
+ 	if (unlikely(len != 1 && len != 2 && len != 4))
+ 		goto out;
++	/* CardBus SoCs allow configuring dev 1 resources only */
++	if (extpci_core->cardbusmode && dev != 1 &&
++	    off >= PCI_BASE_ADDRESS_0 && off <= PCI_BASE_ADDRESS_5)
++		goto out;
+ 	addr = get_cfgspace_addr(pc, bus, dev, func, off);
+ 	if (unlikely(!addr))
+ 		goto out;
diff --git a/target/linux/brcm47xx/patches-4.4/901-Revert-bcma-switch-GPIO-portions-to-use-GPIOLIB_IRQC.patch b/target/linux/brcm47xx/patches-4.4/901-Revert-bcma-switch-GPIO-portions-to-use-GPIOLIB_IRQC.patch
new file mode 100644
index 0000000000..585d56aedf
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/901-Revert-bcma-switch-GPIO-portions-to-use-GPIOLIB_IRQC.patch
@@ -0,0 +1,233 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Fri, 18 Dec 2015 07:51:08 +0100
+Subject: [PATCH] Revert "bcma: switch GPIO portions to use GPIOLIB_IRQCHIP"
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This reverts commit 74f4e0cc61080f63f28e8d519bdf437957e64217.
+
+On BCM47XX (MIPS) bcma_bus_get_host_dev returns NULL which results in:
+[    0.157054] missing gpiochip .dev parent pointer
+[    0.157287] bcma: bus0: Error registering GPIO driver: -22
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ drivers/bcma/Kconfig                        |  2 +-
+ drivers/bcma/driver_gpio.c                  | 92 +++++++++++++++++++----------
+ include/linux/bcma/bcma_driver_chipcommon.h |  1 +
+ 3 files changed, 64 insertions(+), 31 deletions(-)
+
+--- a/drivers/bcma/Kconfig
++++ b/drivers/bcma/Kconfig
+@@ -94,7 +94,7 @@ config BCMA_DRIVER_GMAC_CMN
+ config BCMA_DRIVER_GPIO
+ 	bool "BCMA GPIO driver"
+ 	depends on BCMA && GPIOLIB
+-	select GPIOLIB_IRQCHIP if BCMA_HOST_SOC
++	select IRQ_DOMAIN if BCMA_HOST_SOC
+ 	help
+ 	  Driver to provide access to the GPIO pins of the bcma bus.
+ 
+--- a/drivers/bcma/driver_gpio.c
++++ b/drivers/bcma/driver_gpio.c
+@@ -8,8 +8,10 @@
+  * Licensed under the GNU/GPL. See COPYING for details.
+  */
+ 
+-#include <linux/gpio/driver.h>
++#include <linux/gpio.h>
++#include <linux/irq.h>
+ #include <linux/interrupt.h>
++#include <linux/irqdomain.h>
+ #include <linux/export.h>
+ #include <linux/bcma/bcma.h>
+ 
+@@ -77,11 +79,19 @@ static void bcma_gpio_free(struct gpio_c
+ }
+ 
+ #if IS_BUILTIN(CONFIG_BCM47XX) || IS_BUILTIN(CONFIG_ARCH_BCM_5301X)
++static int bcma_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
++{
++	struct bcma_drv_cc *cc = bcma_gpio_get_cc(chip);
++
++	if (cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC)
++		return irq_find_mapping(cc->irq_domain, gpio);
++	else
++		return -EINVAL;
++}
+ 
+ static void bcma_gpio_irq_unmask(struct irq_data *d)
+ {
+-	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+-	struct bcma_drv_cc *cc = bcma_gpio_get_cc(gc);
++	struct bcma_drv_cc *cc = irq_data_get_irq_chip_data(d);
+ 	int gpio = irqd_to_hwirq(d);
+ 	u32 val = bcma_chipco_gpio_in(cc, BIT(gpio));
+ 
+@@ -91,8 +101,7 @@ static void bcma_gpio_irq_unmask(struct
+ 
+ static void bcma_gpio_irq_mask(struct irq_data *d)
+ {
+-	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+-	struct bcma_drv_cc *cc = bcma_gpio_get_cc(gc);
++	struct bcma_drv_cc *cc = irq_data_get_irq_chip_data(d);
+ 	int gpio = irqd_to_hwirq(d);
+ 
+ 	bcma_chipco_gpio_intmask(cc, BIT(gpio), 0);
+@@ -107,7 +116,6 @@ static struct irq_chip bcma_gpio_irq_chi
+ static irqreturn_t bcma_gpio_irq_handler(int irq, void *dev_id)
+ {
+ 	struct bcma_drv_cc *cc = dev_id;
+-	struct gpio_chip *gc = &cc->gpio;
+ 	u32 val = bcma_cc_read32(cc, BCMA_CC_GPIOIN);
+ 	u32 mask = bcma_cc_read32(cc, BCMA_CC_GPIOIRQ);
+ 	u32 pol = bcma_cc_read32(cc, BCMA_CC_GPIOPOL);
+@@ -117,58 +125,81 @@ static irqreturn_t bcma_gpio_irq_handler
+ 	if (!irqs)
+ 		return IRQ_NONE;
+ 
+-	for_each_set_bit(gpio, &irqs, gc->ngpio)
+-		generic_handle_irq(irq_find_mapping(gc->irqdomain, gpio));
++	for_each_set_bit(gpio, &irqs, cc->gpio.ngpio)
++		generic_handle_irq(bcma_gpio_to_irq(&cc->gpio, gpio));
+ 	bcma_chipco_gpio_polarity(cc, irqs, val & irqs);
+ 
+ 	return IRQ_HANDLED;
+ }
+ 
+-static int bcma_gpio_irq_init(struct bcma_drv_cc *cc)
++static int bcma_gpio_irq_domain_init(struct bcma_drv_cc *cc)
+ {
+ 	struct gpio_chip *chip = &cc->gpio;
+-	int hwirq, err;
++	int gpio, hwirq, err;
+ 
+ 	if (cc->core->bus->hosttype != BCMA_HOSTTYPE_SOC)
+ 		return 0;
+ 
++	cc->irq_domain = irq_domain_add_linear(NULL, chip->ngpio,
++					       &irq_domain_simple_ops, cc);
++	if (!cc->irq_domain) {
++		err = -ENODEV;
++		goto err_irq_domain;
++	}
++	for (gpio = 0; gpio < chip->ngpio; gpio++) {
++		int irq = irq_create_mapping(cc->irq_domain, gpio);
++
++		irq_set_chip_data(irq, cc);
++		irq_set_chip_and_handler(irq, &bcma_gpio_irq_chip,
++					 handle_simple_irq);
++	}
++
+ 	hwirq = bcma_core_irq(cc->core, 0);
+ 	err = request_irq(hwirq, bcma_gpio_irq_handler, IRQF_SHARED, "gpio",
+ 			  cc);
+ 	if (err)
+-		return err;
++		goto err_req_irq;
+ 
+ 	bcma_chipco_gpio_intmask(cc, ~0, 0);
+ 	bcma_cc_set32(cc, BCMA_CC_IRQMASK, BCMA_CC_IRQ_GPIO);
+ 
+-	err =  gpiochip_irqchip_add(chip,
+-				    &bcma_gpio_irq_chip,
+-				    0,
+-				    handle_simple_irq,
+-				    IRQ_TYPE_NONE);
+-	if (err) {
+-		free_irq(hwirq, cc);
+-		return err;
+-	}
+-
+ 	return 0;
++
++err_req_irq:
++	for (gpio = 0; gpio < chip->ngpio; gpio++) {
++		int irq = irq_find_mapping(cc->irq_domain, gpio);
++
++		irq_dispose_mapping(irq);
++	}
++	irq_domain_remove(cc->irq_domain);
++err_irq_domain:
++	return err;
+ }
+ 
+-static void bcma_gpio_irq_exit(struct bcma_drv_cc *cc)
++static void bcma_gpio_irq_domain_exit(struct bcma_drv_cc *cc)
+ {
++	struct gpio_chip *chip = &cc->gpio;
++	int gpio;
++
+ 	if (cc->core->bus->hosttype != BCMA_HOSTTYPE_SOC)
+ 		return;
+ 
+ 	bcma_cc_mask32(cc, BCMA_CC_IRQMASK, ~BCMA_CC_IRQ_GPIO);
+ 	free_irq(bcma_core_irq(cc->core, 0), cc);
++	for (gpio = 0; gpio < chip->ngpio; gpio++) {
++		int irq = irq_find_mapping(cc->irq_domain, gpio);
++
++		irq_dispose_mapping(irq);
++	}
++	irq_domain_remove(cc->irq_domain);
+ }
+ #else
+-static int bcma_gpio_irq_init(struct bcma_drv_cc *cc)
++static int bcma_gpio_irq_domain_init(struct bcma_drv_cc *cc)
+ {
+ 	return 0;
+ }
+ 
+-static void bcma_gpio_irq_exit(struct bcma_drv_cc *cc)
++static void bcma_gpio_irq_domain_exit(struct bcma_drv_cc *cc)
+ {
+ }
+ #endif
+@@ -187,8 +218,9 @@ int bcma_gpio_init(struct bcma_drv_cc *c
+ 	chip->set		= bcma_gpio_set_value;
+ 	chip->direction_input	= bcma_gpio_direction_input;
+ 	chip->direction_output	= bcma_gpio_direction_output;
+-	chip->owner		= THIS_MODULE;
+-	chip->dev		= bcma_bus_get_host_dev(bus);
++#if IS_BUILTIN(CONFIG_BCM47XX) || IS_BUILTIN(CONFIG_ARCH_BCM_5301X)
++	chip->to_irq		= bcma_gpio_to_irq;
++#endif
+ #if IS_BUILTIN(CONFIG_OF)
+ 	if (cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC)
+ 		chip->of_node	= cc->core->dev.of_node;
+@@ -216,13 +248,13 @@ int bcma_gpio_init(struct bcma_drv_cc *c
+ 	else
+ 		chip->base		= -1;
+ 
+-	err = gpiochip_add(chip);
++	err = bcma_gpio_irq_domain_init(cc);
+ 	if (err)
+ 		return err;
+ 
+-	err = bcma_gpio_irq_init(cc);
++	err = gpiochip_add(chip);
+ 	if (err) {
+-		gpiochip_remove(chip);
++		bcma_gpio_irq_domain_exit(cc);
+ 		return err;
+ 	}
+ 
+@@ -231,7 +263,7 @@ int bcma_gpio_init(struct bcma_drv_cc *c
+ 
+ int bcma_gpio_unregister(struct bcma_drv_cc *cc)
+ {
+-	bcma_gpio_irq_exit(cc);
++	bcma_gpio_irq_domain_exit(cc);
+ 	gpiochip_remove(&cc->gpio);
+ 	return 0;
+ }
+--- a/include/linux/bcma/bcma_driver_chipcommon.h
++++ b/include/linux/bcma/bcma_driver_chipcommon.h
+@@ -640,6 +640,7 @@ struct bcma_drv_cc {
+ 	spinlock_t gpio_lock;
+ #ifdef CONFIG_BCMA_DRIVER_GPIO
+ 	struct gpio_chip gpio;
++	struct irq_domain *irq_domain;
+ #endif
+ };
+ 
diff --git a/target/linux/brcm47xx/patches-4.4/920-cache-wround.patch b/target/linux/brcm47xx/patches-4.4/920-cache-wround.patch
new file mode 100644
index 0000000000..b730a76d39
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/920-cache-wround.patch
@@ -0,0 +1,138 @@
+--- a/arch/mips/include/asm/r4kcache.h
++++ b/arch/mips/include/asm/r4kcache.h
+@@ -28,10 +28,28 @@ extern void (*r4k_blast_icache)(void);
+ #ifdef CONFIG_BCM47XX
+ #include <asm/paccess.h>
+ #include <linux/ssb/ssb.h>
+-#define BCM4710_DUMMY_RREG() ((void) *((u8 *) KSEG1ADDR(SSB_ENUM_BASE)))
++#define BCM4710_DUMMY_RREG() bcm4710_dummy_rreg()
++
++static inline unsigned long bcm4710_dummy_rreg(void)
++{
++      return *(volatile unsigned long *)(KSEG1ADDR(SSB_ENUM_BASE));
++}
++
++#define BCM4710_FILL_TLB(addr) bcm4710_fill_tlb((void *)(addr))
++
++static inline unsigned long bcm4710_fill_tlb(void *addr)
++{
++      return *(unsigned long *)addr;
++}
++
++#define BCM4710_PROTECTED_FILL_TLB(addr) bcm4710_protected_fill_tlb((void *)(addr))
++
++static inline void bcm4710_protected_fill_tlb(void *addr)
++{
++      unsigned long x;
++      get_dbe(x, (unsigned long *)addr);;
++}
+ 
+-#define BCM4710_FILL_TLB(addr) (*(volatile unsigned long *)(addr))
+-#define BCM4710_PROTECTED_FILL_TLB(addr) ({ unsigned long x; get_dbe(x, (volatile unsigned long *)(addr)); })
+ #else
+ #define BCM4710_DUMMY_RREG()
+ 
+--- a/arch/mips/mm/tlbex.c
++++ b/arch/mips/mm/tlbex.c
+@@ -943,6 +943,9 @@ build_get_pgde32(u32 **p, unsigned int t
+ 		uasm_i_srl(p, ptr, ptr, SMP_CPUID_PTRSHIFT);
+ 		uasm_i_addu(p, ptr, tmp, ptr);
+ #else
++#ifdef CONFIG_BCM47XX
++		uasm_i_nop(p);
++#endif
+ 		UASM_i_LA_mostly(p, ptr, pgdc);
+ #endif
+ 		uasm_i_mfc0(p, tmp, C0_BADVADDR); /* get faulting address */
+@@ -1281,12 +1284,12 @@ static void build_r4000_tlb_refill_handl
+ 			/* No need for uasm_i_nop */
+ 		}
+ 
+-#ifdef CONFIG_BCM47XX
+-		uasm_i_nop(&p);
+-#endif
+ #ifdef CONFIG_64BIT
+ 		build_get_pmde64(&p, &l, &r, K0, K1); /* get pmd in K1 */
+ #else
++# ifdef CONFIG_BCM47XX
++		uasm_i_nop(&p);
++# endif
+ 		build_get_pgde32(&p, K0, K1); /* get pgd in K1 */
+ #endif
+ 
+@@ -1298,6 +1301,9 @@ static void build_r4000_tlb_refill_handl
+ 		build_update_entries(&p, K0, K1);
+ 		build_tlb_write_entry(&p, &l, &r, tlb_random);
+ 		uasm_l_leave(&l, p);
++#ifdef CONFIG_BCM47XX
++		uasm_i_nop(&p);
++#endif
+ 		uasm_i_eret(&p); /* return from trap */
+ 	}
+ #ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
+@@ -1871,12 +1877,12 @@ build_r4000_tlbchange_handler_head(u32 *
+ {
+ 	struct work_registers wr = build_get_work_registers(p);
+ 
+-#ifdef CONFIG_BCM47XX
+-	uasm_i_nop(p);
+-#endif
+ #ifdef CONFIG_64BIT
+ 	build_get_pmde64(p, l, r, wr.r1, wr.r2); /* get pmd in ptr */
+ #else
++# ifdef CONFIG_BCM47XX
++	uasm_i_nop(p);
++# endif
+ 	build_get_pgde32(p, wr.r1, wr.r2); /* get pgd in ptr */
+ #endif
+ 
+@@ -1923,6 +1929,9 @@ build_r4000_tlbchange_handler_tail(u32 *
+ 	build_tlb_write_entry(p, l, r, tlb_indexed);
+ 	uasm_l_leave(l, *p);
+ 	build_restore_work_registers(p);
++#ifdef CONFIG_BCM47XX
++	uasm_i_nop(p);
++#endif
+ 	uasm_i_eret(p); /* return from trap */
+ 
+ #ifdef CONFIG_64BIT
+--- a/arch/mips/kernel/genex.S
++++ b/arch/mips/kernel/genex.S
+@@ -21,6 +21,19 @@
+ #include <asm/war.h>
+ #include <asm/thread_info.h>
+ 
++#ifdef CONFIG_BCM47XX
++# ifdef eret
++#  undef eret
++# endif
++# define eret 					\
++	.set push;				\
++	.set noreorder;				\
++	 nop; 					\
++	 nop;					\
++	 eret;					\
++	.set pop;
++#endif
++
+ 	__INIT
+ 
+ /*
+@@ -34,7 +47,6 @@ NESTED(except_vec3_generic, 0, sp)
+ 	.set	noat
+ #ifdef CONFIG_BCM47XX
+ 	nop
+-	nop
+ #endif
+ #if R5432_CP0_INTERRUPT_WAR
+ 	mfc0	k0, CP0_INDEX
+@@ -59,6 +71,9 @@ NESTED(except_vec3_r4000, 0, sp)
+ 	.set	push
+ 	.set	arch=r4000
+ 	.set	noat
++#ifdef CONFIG_BCM47XX
++	nop
++#endif
+ 	mfc0	k1, CP0_CAUSE
+ 	li	k0, 31<<2
+ 	andi	k1, k1, 0x7c
diff --git a/target/linux/brcm47xx/patches-4.4/940-bcm47xx-yenta.patch b/target/linux/brcm47xx/patches-4.4/940-bcm47xx-yenta.patch
new file mode 100644
index 0000000000..00a44d6317
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/940-bcm47xx-yenta.patch
@@ -0,0 +1,46 @@
+--- a/drivers/pcmcia/yenta_socket.c
++++ b/drivers/pcmcia/yenta_socket.c
+@@ -919,6 +919,8 @@ static unsigned int yenta_probe_irq(stru
+ 	 * Probe for usable interrupts using the force
+ 	 * register to generate bogus card status events.
+ 	 */
++#ifndef CONFIG_BCM47XX
++	/* WRT54G3G does not like this */
+ 	cb_writel(socket, CB_SOCKET_EVENT, -1);
+ 	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
+ 	reg = exca_readb(socket, I365_CSCINT);
+@@ -934,6 +936,7 @@ static unsigned int yenta_probe_irq(stru
+ 	}
+ 	cb_writel(socket, CB_SOCKET_MASK, 0);
+ 	exca_writeb(socket, I365_CSCINT, reg);
++#endif
+ 
+ 	mask = probe_irq_mask(val) & 0xffff;
+ 
+@@ -1018,6 +1021,10 @@ static void yenta_get_socket_capabilitie
+ 	else
+ 		socket->socket.irq_mask = 0;
+ 
++	/* irq mask probing is broken for the WRT54G3G */
++	if (socket->socket.irq_mask == 0)
++		socket->socket.irq_mask = 0x6f8;
++
+ 	dev_info(&socket->dev->dev, "ISA IRQ mask 0x%04x, PCI irq %d\n",
+ 		 socket->socket.irq_mask, socket->cb_irq);
+ }
+@@ -1250,6 +1257,15 @@ static int yenta_probe(struct pci_dev *d
+ 	dev_info(&dev->dev, "Socket status: %08x\n",
+ 		 cb_readl(socket, CB_SOCKET_STATE));
+ 
++	/* Generate an interrupt on card insert/remove */
++	config_writew(socket, CB_SOCKET_MASK, CB_CSTSMASK | CB_CDMASK);
++
++	/* Set up Multifunction Routing Status Register */
++	config_writew(socket, 0x8C, 0x1000 /* MFUNC3 to GPIO3 */ | 0x2 /* MFUNC0 to INTA */);
++
++	/* Switch interrupts to parallelized */
++	config_writeb(socket, 0x92, 0x64);
++
+ 	yenta_fixup_parent_bridge(dev->subordinate);
+ 
+ 	/* Register it with the pcmcia layer.. */
diff --git a/target/linux/brcm47xx/patches-4.4/976-ssb_increase_pci_delay.patch b/target/linux/brcm47xx/patches-4.4/976-ssb_increase_pci_delay.patch
new file mode 100644
index 0000000000..90bda515eb
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/976-ssb_increase_pci_delay.patch
@@ -0,0 +1,11 @@
+--- a/drivers/ssb/driver_pcicore.c
++++ b/drivers/ssb/driver_pcicore.c
+@@ -389,7 +389,7 @@ static void ssb_pcicore_init_hostmode(st
+ 	set_io_port_base(ssb_pcicore_controller.io_map_base);
+ 	/* Give some time to the PCI controller to configure itself with the new
+ 	 * values. Not waiting at this point causes crashes of the machine. */
+-	mdelay(10);
++	mdelay(300);
+ 	register_pci_controller(&ssb_pcicore_controller);
+ }
+ 
diff --git a/target/linux/brcm47xx/patches-4.4/999-wl_exports.patch b/target/linux/brcm47xx/patches-4.4/999-wl_exports.patch
new file mode 100644
index 0000000000..ea59f4f1db
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/999-wl_exports.patch
@@ -0,0 +1,22 @@
+--- a/drivers/firmware/broadcom/bcm47xx_nvram.c
++++ b/drivers/firmware/broadcom/bcm47xx_nvram.c
+@@ -34,7 +34,8 @@ struct nvram_header {
+ 	u32 config_ncdl;	/* ncdl values for memc */
+ };
+ 
+-static char nvram_buf[NVRAM_SPACE];
++char nvram_buf[NVRAM_SPACE];
++EXPORT_SYMBOL(nvram_buf);
+ static size_t nvram_len;
+ static const u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
+ static int cfe_env;
+--- a/arch/mips/mm/cache.c
++++ b/arch/mips/mm/cache.c
+@@ -59,6 +59,7 @@ void (*_dma_cache_wback)(unsigned long s
+ void (*_dma_cache_inv)(unsigned long start, unsigned long size);
+ 
+ EXPORT_SYMBOL(_dma_cache_wback_inv);
++EXPORT_SYMBOL(_dma_cache_inv);
+ 
+ #endif /* CONFIG_DMA_NONCOHERENT || CONFIG_DMA_MAYBE_COHERENT */
+