brcm47xx: add support for the kernel 4.19

One patch that wasn't ported due to a lot of conflict is: 901-Revert-bcma-switch-GPIO-portions-to-use-GPIOLIB_IRQC.patch Hopefully a correct/real fix will get developed before we switch brcm47xx to the 4.14. This IS NOT ready for switching/trying/using 4.19 yet due to some DMA regression affecting bgmac: [ 0.945472] bgmac_bcma bcma0:2: Found PHY addr: 25 [ 0.954565] libphy: bcma_mdio mii bus: probed [ 0.959486] ------------[ cut here ]------------ [ 0.964387] WARNING: CPU: 0 PID: 1 at ./include/linux/dma-mapping.h:516 bgmac_enet_probe+0x1b4/0x5c4 [ 0.973751] Modules linked in: [ 0.976913] CPU: 0 PID: 1 Comm: swapper Not tainted 4.19.9 #0 [ 0.982750] Stack : 804a0000 804597c4 00000000 00000000 80458fd8 8381bc2c 838282d4 80481a47 [ 0.991367] 8042e3ec 00000001 804d38f0 00000204 83980000 00000065 8381bbe0 6f55b24f [ 0.999975] 00000000 00000000 80520000 00002018 00000000 00000075 00000007 00000000 [ 1.008583] 00000000 80480000 000ee811 00000000 00000000 00000000 80432c00 80248db8 [ 1.017196] 00000009 00000204 83980000 803ad7b0 00000000 801feeec 00000000 804d0000 [ 1.025804] ... [ 1.028325] Call Trace: [ 1.030875] [<8000aef8>] show_stack+0x58/0x100 [ 1.035513] [<8001f8b4>] __warn+0xe4/0x118 [ 1.039708] [<8001f9a4>] warn_slowpath_null+0x48/0x64 [ 1.044935] [<80248db8>] bgmac_enet_probe+0x1b4/0x5c4 [ 1.050101] [<802498e0>] bgmac_probe+0x558/0x590 [ 1.054906] [<80252fd0>] bcma_device_probe+0x38/0x70 [ 1.060017] [<8020e1e8>] really_probe+0x170/0x2e8 [ 1.064891] [<8020e714>] __driver_attach+0xa4/0xec [ 1.069784] [<8020c1e0>] bus_for_each_dev+0x58/0xb0 [ 1.074833] [<8020d590>] bus_add_driver+0xf8/0x218 [ 1.079731] [<8020ef24>] driver_register+0xcc/0x11c [ 1.084804] [<804b54cc>] bgmac_init+0x1c/0x44 [ 1.089258] [<8000121c>] do_one_initcall+0x7c/0x1a0 [ 1.094343] [<804a1d34>] kernel_init_freeable+0x150/0x218 [ 1.099886] [<803a082c>] kernel_init+0x10/0x104 [ 1.104583] [<80005878>] ret_from_kernel_thread+0x14/0x1c [ 1.110107] ---[ end trace f441c0d873d1fb5b ]--- [ 1.114914] bgmac_bcma bcma0:2: Allocation of TX ring 0x200 failed [ 1.121215] bgmac_bcma bcma0:2: Unable to alloc memory for DMA [ 1.127626] bgmac_bcma: probe of bcma0:2 failed with error -12 [ 1.133838] bgmac_bcma: Broadcom 47xx GBit MAC driver loaded Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-12-27 21:54:28 +01:00 · 2018-12-27 21:54:28 +01:00 · 25d8aa7d02
parent 6ab138fa84
commit 25d8aa7d02
21 changed files with 2354 additions and 0 deletions
--- a/target/linux/brcm47xx/config-4.19
+++ b/target/linux/brcm47xx/config-4.19
@ -0,0 +1,209 @@
+CONFIG_ADM6996_PHY=y
+CONFIG_ARCH_BINFMT_ELF_STATE=y
+CONFIG_ARCH_CLOCKSOURCE_DATA=y
+CONFIG_ARCH_DISCARD_MEMBLOCK=y
+CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
+CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_MMAP_RND_BITS_MAX=15
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=15
+CONFIG_ARCH_SUPPORTS_UPROBES=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_USE_BUILTIN_BSWAP=y
+CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
+CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
+CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
+CONFIG_BCM47XX=y
+CONFIG_BCM47XX_BCMA=y
+CONFIG_BCM47XX_NVRAM=y
+CONFIG_BCM47XX_SPROM=y
+CONFIG_BCM47XX_SSB=y
+CONFIG_BCM47XX_WDT=y
+CONFIG_BCMA=y
+CONFIG_BCMA_BLOCKIO=y
+CONFIG_BCMA_DEBUG=y
+CONFIG_BCMA_DRIVER_GMAC_CMN=y
+CONFIG_BCMA_DRIVER_GPIO=y
+CONFIG_BCMA_DRIVER_MIPS=y
+CONFIG_BCMA_DRIVER_PCI=y
+CONFIG_BCMA_DRIVER_PCI_HOSTMODE=y
+CONFIG_BCMA_HOST_PCI=y
+CONFIG_BCMA_HOST_PCI_POSSIBLE=y
+CONFIG_BCMA_HOST_SOC=y
+CONFIG_BCMA_NFLASH=y
+CONFIG_BCMA_PFLASH=y
+CONFIG_BCMA_SFLASH=y
+# CONFIG_BGMAC_BCMA is not set
+CONFIG_BLK_MQ_PCI=y
+CONFIG_CEVT_R4K=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMDLINE="noinitrd console=ttyS0,115200"
+CONFIG_CMDLINE_BOOL=y
+# CONFIG_CMDLINE_OVERRIDE is not set
+# CONFIG_CPU_BMIPS is not set
+CONFIG_CPU_GENERIC_DUMP_TLB=y
+CONFIG_CPU_HAS_PREFETCH=y
+CONFIG_CPU_HAS_SYNC=y
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_CPU_MIPS32=y
+CONFIG_CPU_MIPS32_R1=y
+# CONFIG_CPU_MIPS32_R2 is not set
+CONFIG_CPU_MIPSR1=y
+CONFIG_CPU_MIPSR2_IRQ_VI=y
+CONFIG_CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS=y
+CONFIG_CPU_R4K_CACHE_TLB=y
+CONFIG_CPU_R4K_FPU=y
+CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
+CONFIG_CPU_SUPPORTS_HIGHMEM=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_WORKQUEUE=y
+CONFIG_CSRC_R4K=y
+CONFIG_DMA_DIRECT_OPS=y
+CONFIG_DMA_NONCOHERENT=y
+CONFIG_DMA_NONCOHERENT_CACHE_SYNC=y
+CONFIG_DMA_NONCOHERENT_MMAP=y
+CONFIG_DMA_NONCOHERENT_OPS=y
+# CONFIG_EARLY_PRINTK is not set
+CONFIG_FIXED_PHY=y
+CONFIG_GENERIC_ATOMIC64=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_LIB_ASHLDI3=y
+CONFIG_GENERIC_LIB_ASHRDI3=y
+CONFIG_GENERIC_LIB_CMPDI2=y
+CONFIG_GENERIC_LIB_LSHRDI3=y
+CONFIG_GENERIC_LIB_UCMPDI2=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_WDT=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDWARE_WATCHPOINTS=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HAVE_ARCH_COMPILER_H=y
+CONFIG_HAVE_ARCH_JUMP_LABEL=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_CBPF_JIT=y
+CONFIG_HAVE_CONTEXT_TRACKING=y
+CONFIG_HAVE_COPY_THREAD_TLS=y
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_HAVE_DEBUG_KMEMLEAK=y
+CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
+CONFIG_HAVE_DMA_CONTIGUOUS=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_HAVE_IDE=y
+CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
+CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
+CONFIG_HAVE_LATENCYTOP_SUPPORT=y
+CONFIG_HAVE_LD_DEAD_CODE_DATA_ELIMINATION=y
+CONFIG_HAVE_MEMBLOCK=y
+CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
+CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
+CONFIG_HAVE_NET_DSA=y
+CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
+CONFIG_HAVE_RSEQ=y
+CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
+CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
+CONFIG_HW_HAS_PCI=y
+CONFIG_HW_RANDOM=y
+CONFIG_HZ_PERIODIC=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_MIPS_CPU=y
+CONFIG_IRQ_WORK=y
+CONFIG_LEDS_GPIO_REGISTER=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MIGRATION=y
+CONFIG_MIPS=y
+CONFIG_MIPS_ASID_BITS=8
+CONFIG_MIPS_ASID_SHIFT=0
+CONFIG_MIPS_CLOCK_VSYSCALL=y
+# CONFIG_MIPS_CMDLINE_BUILTIN_EXTEND is not set
+CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER=y
+CONFIG_MIPS_L1_CACHE_SHIFT=5
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_MTD_BCM47XXSFLASH=y
+CONFIG_MTD_BCM47XX_PARTS=y
+CONFIG_MTD_NAND=y
+CONFIG_MTD_NAND_BCM47XXNFLASH=y
+CONFIG_MTD_NAND_ECC=y
+CONFIG_MTD_PARSER_TRX=y
+CONFIG_MTD_PHYSMAP=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_PER_CPU_KM=y
+CONFIG_NO_EXCEPT_FILL=y
+CONFIG_NO_GENERIC_PCI_IOPORT_MAP=y
+# CONFIG_OF is not set
+CONFIG_PCI=y
+CONFIG_PCI_DISABLE_COMMON_QUIRKS=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DRIVERS_LEGACY=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=2
+CONFIG_PHYLIB=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SRCU=y
+CONFIG_SSB=y
+CONFIG_SSB_B43_PCI_BRIDGE=y
+CONFIG_SSB_BLOCKIO=y
+CONFIG_SSB_DRIVER_EXTIF=y
+CONFIG_SSB_DRIVER_GIGE=y
+CONFIG_SSB_DRIVER_GPIO=y
+CONFIG_SSB_DRIVER_MIPS=y
+CONFIG_SSB_DRIVER_PCICORE=y
+CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
+CONFIG_SSB_EMBEDDED=y
+CONFIG_SSB_HOST_SOC=y
+CONFIG_SSB_PCICORE_HOSTMODE=y
+CONFIG_SSB_PCIHOST=y
+CONFIG_SSB_PCIHOST_POSSIBLE=y
+CONFIG_SSB_SERIAL=y
+CONFIG_SSB_SFLASH=y
+CONFIG_SSB_SPROM=y
+CONFIG_SWCONFIG=y
+CONFIG_SWCONFIG_B53=y
+# CONFIG_SWCONFIG_B53_MMAP_DRIVER is not set
+CONFIG_SWCONFIG_B53_PHY_DRIVER=y
+CONFIG_SWCONFIG_B53_PHY_FIXUP=y
+# CONFIG_SWCONFIG_B53_SRAB_DRIVER is not set
+CONFIG_SWPHY=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_SYS_HAS_CPU_BMIPS=y
+CONFIG_SYS_HAS_CPU_BMIPS32_3300=y
+CONFIG_SYS_HAS_CPU_MIPS32_R1=y
+CONFIG_SYS_HAS_CPU_MIPS32_R2=y
+CONFIG_SYS_HAS_EARLY_PRINTK=y
+CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
+CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
+CONFIG_SYS_SUPPORTS_HIGHMEM=y
+CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
+CONFIG_SYS_SUPPORTS_MIPS16=y
+CONFIG_SYS_SUPPORTS_ZBOOT=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TINY_SRCU=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USE_GENERIC_EARLY_PRINTK_8250=y
+CONFIG_WATCHDOG_CORE=y
--- a/target/linux/brcm47xx/patches-4.19/159-cpu_fixes.patch
+++ b/target/linux/brcm47xx/patches-4.19/159-cpu_fixes.patch
@ -0,0 +1,509 @@
+--- a/arch/mips/include/asm/r4kcache.h
+++ b/arch/mips/include/asm/r4kcache.h
+@@ -25,6 +25,38 @@
+ extern void (*r4k_blast_dcache)(void);
+ extern void (*r4k_blast_icache)(void);
+ 
+#if defined(CONFIG_BCM47XX) && !defined(CONFIG_CPU_MIPS32_R2)
+#include <asm/paccess.h>
+#include <linux/ssb/ssb.h>
+#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);;
+}
+
+#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 +130,7 @@ 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 +158,7 @@ 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 +166,7 @@ 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
+ }
+@@ -205,6 +240,7 @@ static inline int protected_flush_icache
+ #ifdef CONFIG_EVA
+ 		return protected_cachee_op(Hit_Invalidate_I, addr);
+ #else
+		BCM4710_DUMMY_RREG();
+ 		return protected_cache_op(Hit_Invalidate_I, addr);
+ #endif
+ 	}
+@@ -218,6 +254,7 @@ static inline int protected_flush_icache
+  */
+ static inline int protected_writeback_dcache_line(unsigned long addr)
+ {
+	BCM4710_DUMMY_RREG();
+ #ifdef CONFIG_EVA
+ 	return protected_cachee_op(Hit_Writeback_Inv_D, addr);
+ #else
+@@ -575,8 +612,51 @@ 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;				\
+@@ -588,6 +668,7 @@ 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);	\
+@@ -602,6 +683,7 @@ static inline void extra##blast_##pfx##c
+ 									\
+ 	__##pfx##flush_prologue						\
+ 									\
+	war								\
+ 	do {								\
+ 		cache##lsize##_unroll32(start, hitop);			\
+ 		start += lsize * 32;					\
+@@ -620,6 +702,8 @@ 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)				\
+@@ -629,26 +713,26 @@ 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) \
+@@ -677,53 +761,23 @@ __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 lsize_2 = lsize * 2;				\
+-	unsigned long lsize_3 = lsize * 3;				\
+-	unsigned long lsize_4 = lsize * 4;				\
+-	unsigned long lsize_5 = lsize * 5;				\
+-	unsigned long lsize_6 = lsize * 6;				\
+-	unsigned long lsize_7 = lsize * 7;				\
+-	unsigned long lsize_8 = lsize * 8;				\
+ 	unsigned long addr = start & ~(lsize - 1);			\
+-	unsigned long aend = (end + lsize - 1) & ~(lsize - 1);		\
+-	int lines = (aend - addr) / lsize;				\
+	unsigned long aend = (end - 1) & ~(lsize - 1);			\
+	war								\
+ 									\
+ 	__##pfx##flush_prologue						\
+ 									\
+-	while (lines >= 8) {						\
+-		prot##cache_op(hitop, addr);				\
+-		prot##cache_op(hitop, addr + lsize);			\
+-		prot##cache_op(hitop, addr + lsize_2);			\
+-		prot##cache_op(hitop, addr + lsize_3);			\
+-		prot##cache_op(hitop, addr + lsize_4);			\
+-		prot##cache_op(hitop, addr + lsize_5);			\
+-		prot##cache_op(hitop, addr + lsize_6);			\
+-		prot##cache_op(hitop, addr + lsize_7);			\
+-		addr += lsize_8;					\
+-		lines -= 8;						\
+-	}								\
+-									\
+-	if (lines & 0x4) {						\
+-		prot##cache_op(hitop, addr);				\
+-		prot##cache_op(hitop, addr + lsize);			\
+-		prot##cache_op(hitop, addr + lsize_2);			\
+-		prot##cache_op(hitop, addr + lsize_3);			\
+-		addr += lsize_4;					\
+-	}								\
+-									\
+-	if (lines & 0x2) {						\
+-		prot##cache_op(hitop, addr);				\
+-		prot##cache_op(hitop, addr + lsize);			\
+-		addr += lsize_2;					\
+-	}								\
+-									\
+-	if (lines & 0x1) {						\
+	while (1) {							\
+		war2							\
+ 		prot##cache_op(hitop, addr);				\
+		if (addr == aend)					\
+			break;						\
+		addr += lsize;						\
+ 	}								\
+ 									\
+ 	__##pfx##flush_epilogue						\
+@@ -731,8 +785,8 @@ 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
+ 
+@@ -769,14 +823,14 @@ __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
+@@ -428,6 +428,10 @@
+ 		eretnc
+ #else
+ 		.set	arch=r4000
+#ifdef CONFIG_BCM47XX
+		nop
+		nop
+#endif
+ 		eret
+ 		.set	mips0
+ #endif
+--- 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
+ 
+ /*
+@@ -32,6 +45,9 @@
+ NESTED(except_vec3_generic, 0, sp)
+ 	.set	push
+ 	.set	noat
+#ifdef CONFIG_BCM47XX
+	nop
+#endif
+ #if R5432_CP0_INTERRUPT_WAR
+ 	mfc0	k0, CP0_INDEX
+ #endif
+@@ -55,6 +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
+--- 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-cps.h>
+ 
+/* For enabling BCM4710 cache workarounds */
+static int bcm4710 = 0;
+
+ /*
+  * Bits describing what cache ops an SMP callback function may perform.
+  *
+@@ -190,6 +193,9 @@ 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)
+@@ -208,6 +214,9 @@ 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)
+@@ -227,6 +236,9 @@ 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)
+@@ -957,6 +969,8 @@ static void local_r4k_flush_cache_sigtra
+ 	}
+ 
+ 	R4600_HIT_CACHEOP_WAR_IMPL;
+	BCM4710_PROTECTED_FILL_TLB(addr);
+	BCM4710_PROTECTED_FILL_TLB(addr + 4);
+ 	if (!cpu_has_ic_fills_f_dc) {
+ 		if (dc_lsize)
+ 			vaddr ? flush_dcache_line(addr & ~(dc_lsize - 1))
+@@ -1859,6 +1873,17 @@ 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:
+@@ -1905,6 +1930,15 @@ void r4k_cache_init(void)
+ 	extern void build_copy_page(void);
+ 	struct cpuinfo_mips *c = &current_cpu_data;
+ 
+	/* Check if special workarounds are required */
+#if defined(CONFIG_BCM47XX) && !defined(CONFIG_CPU_MIPS32_R2)
+	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();
+ 	probe_vcache();
+ 	setup_scache();
+@@ -1982,7 +2016,15 @@ 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
+@@ -967,6 +967,9 @@ void build_get_pgde32(u32 **p, unsigned
+ 		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 */
+@@ -1327,6 +1330,9 @@ static void build_r4000_tlb_refill_handl
+ #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
+ 
+@@ -1338,6 +1344,9 @@ 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
+@@ -2028,6 +2037,9 @@ build_r4000_tlbchange_handler_head(u32 *
+ #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
+ 
+@@ -2074,6 +2086,9 @@ 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/target/linux/brcm47xx/patches-4.19/160-kmap_coherent.patch
+++ b/target/linux/brcm47xx/patches-4.19/160-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
+@@ -226,6 +226,9 @@
+ #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
+@@ -80,4 +80,6 @@
+ #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
+@@ -672,7 +672,7 @@ static inline void local_r4k_flush_cache
+ 		map_coherent = (cpu_has_dc_aliases &&
+ 				page_mapcount(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);
+@@ -697,7 +697,7 @@ 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
+@@ -168,7 +168,7 @@ 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_mapcount(from) && !Page_dcache_dirty(from)) {
+ 		vfrom = kmap_coherent(from, vaddr);
+ 		copy_page(vto, vfrom);
+@@ -190,7 +190,7 @@ 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_mapcount(page) && !Page_dcache_dirty(page)) {
+ 		void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
+ 		memcpy(vto, src, len);
+@@ -208,7 +208,7 @@ 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_mapcount(page) && !Page_dcache_dirty(page)) {
+ 		void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
+ 		memcpy(dst, vfrom, len);
--- a/target/linux/brcm47xx/patches-4.19/161-MIPS-BCM47XX-Enable-USB-power-on-Netgear-WNDR3400v3.patch
+++ b/target/linux/brcm47xx/patches-4.19/161-MIPS-BCM47XX-Enable-USB-power-on-Netgear-WNDR3400v3.patch
@ -0,0 +1,39 @@
+From 17cb62255ef8f6b6ac270024204a8fa65537b333 Mon Sep 17 00:00:00 2001
+From: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
+Date: Sun, 19 Aug 2018 21:23:14 +0300
+Subject: [PATCH] MIPS: BCM47XX: Enable USB power on Netgear WNDR3400v3
+
+Setting GPIO 21 high seems to be required to enable power to USB ports
+on the WNDR3400v3. As there is already similar code for WNR3500L,
+make the existing USB power GPIO code generic and use that.
+
+Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
+---
+ arch/mips/bcm47xx/workarounds.c | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+--- a/arch/mips/bcm47xx/workarounds.c
+++ b/arch/mips/bcm47xx/workarounds.c
+@@ -5,9 +5,8 @@
+ #include <bcm47xx_board.h>
+ #include <bcm47xx.h>
+ 
+-static void __init bcm47xx_workarounds_netgear_wnr3500l(void)
+static void __init bcm47xx_workarounds_enable_usb_power(int usb_power)
+ {
+-	const int usb_power = 12;
+ 	int err;
+ 
+ 	err = gpio_request_one(usb_power, GPIOF_OUT_INIT_HIGH, "usb_power");
+@@ -23,7 +22,10 @@ void __init bcm47xx_workarounds(void)
+ 
+ 	switch (board) {
+ 	case BCM47XX_BOARD_NETGEAR_WNR3500L:
+-		bcm47xx_workarounds_netgear_wnr3500l();
+		bcm47xx_workarounds_enable_usb_power(12);
+		break;
+	case BCM47XX_BOARD_NETGEAR_WNDR3400_V3:
+		bcm47xx_workarounds_enable_usb_power(21);
+ 		break;
+ 	default:
+ 		/* No workaround(s) needed */
--- a/target/linux/brcm47xx/patches-4.19/209-b44-register-adm-switch.patch
+++ b/target/linux/brcm47xx/patches-4.19/209-b44-register-adm-switch.patch
@ -0,0 +1,121 @@
+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 <linux/uaccess.h>
+ #include <asm/io.h>
+@@ -2246,6 +2248,69 @@ 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;
+
+	/*
+	 * We ignore the "adm_rc" GPIO here. The driver does not use it,
+	 * and it conflicts with the Reset button GPIO on the Linksys WRT54GSv1.
+	 */
+
+	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;
+@@ -2281,6 +2346,9 @@ static int b44_register_phy_one(struct b
+ 	if (!mdiobus_is_registered_device(bp->mii_bus, 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);
+@@ -2475,6 +2543,7 @@ 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 */
--- a/target/linux/brcm47xx/patches-4.19/210-b44_phy_fix.patch
+++ b/target/linux/brcm47xx/patches-4.19/210-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;
+@@ -2176,6 +2201,8 @@ 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])){
--- a/target/linux/brcm47xx/patches-4.19/280-activate_ssb_support_in_usb.patch
+++ b/target/linux/brcm47xx/patches-4.19/280-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
+@@ -32,6 +32,7 @@ config BCMA_HOST_PCI
+ config BCMA_HOST_SOC
+ 	bool "Support for BCMA in a SoC"
+ 	depends on HAS_IOMEM
+	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
+@@ -135,6 +135,7 @@ 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
--- a/target/linux/brcm47xx/patches-4.19/300-fork_cacheflush.patch
+++ b/target/linux/brcm47xx/patches-4.19/300-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
+@@ -47,7 +47,7 @@
+ 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);
--- a/target/linux/brcm47xx/patches-4.19/310-no_highpage.patch
+++ b/target/linux/brcm47xx/patches-4.19/310-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);
+@@ -110,11 +111,16 @@ 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
+@@ -162,30 +162,6 @@ 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_mapcount(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)
--- a/target/linux/brcm47xx/patches-4.19/320-MIPS-BCM47XX-Devices-database-update-for-4.x.patch
+++ b/target/linux/brcm47xx/patches-4.19/320-MIPS-BCM47XX-Devices-database-update-for-4.x.patch
@ -0,0 +1,185 @@
+--- a/arch/mips/bcm47xx/board.c
+++ b/arch/mips/bcm47xx/board.c
+@@ -141,6 +141,7 @@ 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"},
+@@ -160,9 +161,12 @@ struct bcm47xx_board_type_list1 bcm47xx_
+ 	{{BCM47XX_BOARD_LUXUL_XVW_P30_V1, "Luxul XVW-P30 V1"}, "luxul_xvwp30_v1"},
+ 	{{BCM47XX_BOARD_LUXUL_XWR_600_V1, "Luxul XWR-600 V1"}, "luxul_xwr600_v1"},
+ 	{{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"},
+--- a/arch/mips/bcm47xx/buttons.c
+++ b/arch/mips/bcm47xx/buttons.c
+@@ -27,6 +27,12 @@
+ /* 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),
+@@ -277,6 +283,18 @@ 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),
+@@ -385,6 +403,17 @@ 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),
+@@ -471,6 +500,9 @@ 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;
+@@ -601,6 +633,12 @@ 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;
+@@ -664,6 +702,12 @@ 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;
+--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
+++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
+@@ -72,6 +72,7 @@ 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,
+@@ -98,9 +99,12 @@ 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,
+--- a/arch/mips/bcm47xx/leds.c
+++ b/arch/mips/bcm47xx/leds.c
+@@ -30,6 +30,14 @@
+ /* 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),
+@@ -314,6 +322,13 @@ 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),
+@@ -556,6 +571,9 @@ 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;
+@@ -689,6 +707,9 @@ 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;
--- a/target/linux/brcm47xx/patches-4.19/400-mtd-bcm47xxpart-get-nvram.patch
+++ b/target/linux/brcm47xx/patches-4.19/400-mtd-bcm47xxpart-get-nvram.patch
@ -0,0 +1,34 @@
+--- a/drivers/mtd/bcm47xxpart.c
+++ b/drivers/mtd/bcm47xxpart.c
+@@ -102,6 +102,7 @@ static int bcm47xxpart_parse(struct mtd_
+ 	int trx_num = 0; /* Number of found TRX partitions */
+ 	int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
+ 	int err;
+	bool found_nvram = false;
+ 
+ 	/*
+ 	 * Some really old flashes (like AT45DB*) had smaller erasesize-s, but
+@@ -283,12 +284,23 @@ 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.
--- a/target/linux/brcm47xx/patches-4.19/610-pci_ide_fix.patch
+++ b/target/linux/brcm47xx/patches-4.19/610-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
+@@ -235,7 +235,11 @@ 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
--- a/target/linux/brcm47xx/patches-4.19/791-tg3-no-pci-sleep.patch
+++ b/target/linux/brcm47xx/patches-4.19/791-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
+@@ -4279,7 +4279,8 @@ 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)
--- a/target/linux/brcm47xx/patches-4.19/800-bcma-add-table-of-serial-flashes-with-smaller-blocks.patch
+++ b/target/linux/brcm47xx/patches-4.19/800-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",
+@@ -42,6 +43,13 @@ 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, },
+@@ -85,6 +93,24 @@ 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)
+ {
+@@ -115,6 +141,10 @@ 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;
--- a/target/linux/brcm47xx/patches-4.19/820-wgt634u-nvram-fix.patch
+++ b/target/linux/brcm47xx/patches-4.19/820-wgt634u-nvram-fix.patch
@ -0,0 +1,304 @@
+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
+@@ -1,2 +1,2 @@
+-obj-$(CONFIG_BCM47XX_NVRAM)		+= bcm47xx_nvram.o
+obj-$(CONFIG_BCM47XX_NVRAM)		+= bcm47xx_nvram.o cfe_env.o
+ obj-$(CONFIG_BCM47XX_SPROM)		+= bcm47xx_sprom.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@nbd.name>
+ * 
+ * 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 <linux/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[] = {0x6000, 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)
+ {
+@@ -56,7 +58,9 @@ static u32 find_nvram_size(void __iomem
+ static int nvram_find_and_copy(void __iomem *iobase, u32 lim)
+ {
+ 	struct nvram_header __iomem *header;
+	int i;
+ 	u32 off;
+	u32 *src, *dst;
+ 	u32 size;
+ 
+ 	if (nvram_len) {
+@@ -64,6 +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) {
+@@ -174,6 +198,13 @@ 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)
--- a/target/linux/brcm47xx/patches-4.19/830-huawei_e970_support.patch
+++ b/target/linux/brcm47xx/patches-4.19/830-huawei_e970_support.patch
@ -0,0 +1,101 @@
+--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
+@@ -37,6 +37,7 @@
+ #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>
+@@ -225,6 +226,33 @@ 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) {
+@@ -244,6 +272,7 @@ 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
+@@ -66,6 +66,7 @@ CONFIG_HW_RANDOM=y
+ CONFIG_GPIO_SYSFS=y
+ CONFIG_WATCHDOG=y
+ CONFIG_BCM47XX_WDT=y
+CONFIG_GPIO_WDT=y
+ CONFIG_SSB_DRIVER_GIGE=y
+ CONFIG_BCMA_DRIVER_GMAC_CMN=y
+ CONFIG_USB=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;
--- a/target/linux/brcm47xx/patches-4.19/831-old_gpio_wdt.patch
+++ b/target/linux/brcm47xx/patches-4.19/831-old_gpio_wdt.patch
@ -0,0 +1,360 @@
+This generic GPIO watchdog is used on Huawei E970 (brcm47xx)
+
+Signed-off-by: Mathias Adam <m.adam--openwrt@adamis.de>
+
+--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
+@@ -1497,6 +1497,15 @@ config WDT_MTX1
+ 	  Hardware driver for the MTX-1 boards. This is a watchdog timer that
+ 	  will reboot the machine after a 100 seconds timer expired.
+ 
+config GPIO_WDT
+	tristate "GPIO Hardware Watchdog"
+ 	help
+	  Hardware driver for GPIO-controlled watchdogs. GPIO pin and
+	  toggle interval settings are platform-specific. The driver
+	  will stop toggling the GPIO (i.e. machine reboots) after a
+	  100 second timer expired and no process has written to
+	  /dev/watchdog during that time.
+
+ config PNX833X_WDT
+ 	tristate "PNX833x Hardware Watchdog"
+ 	depends on SOC_PNX8335
+--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
+@@ -154,6 +154,7 @@ obj-$(CONFIG_RC32434_WDT) += rc32434_wdt
+ obj-$(CONFIG_INDYDOG) += indydog.o
+ obj-$(CONFIG_JZ4740_WDT) += jz4740_wdt.o
+ obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o
+obj-$(CONFIG_GPIO_WDT) += old_gpio_wdt.o
+ obj-$(CONFIG_PNX833X_WDT) += pnx833x_wdt.o
+ obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o
+ obj-$(CONFIG_AR7_WDT) += ar7_wdt.o
+--- /dev/null
+++ b/drivers/watchdog/old_gpio_wdt.c
+@@ -0,0 +1,301 @@
+/*
+ *      Driver for GPIO-controlled Hardware Watchdogs.
+ *
+ *      Copyright (C) 2013 Mathias Adam <m.adam--linux@adamis.de>
+ *
+ *      Replaces mtx1_wdt (driver for the MTX-1 Watchdog):
+ *
+ *      (C) Copyright 2005 4G Systems <info@4g-systems.biz>,
+ *                              All Rights Reserved.
+ *                              http://www.4g-systems.biz
+ *
+ *      (C) Copyright 2007 OpenWrt.org, Florian Fainelli <florian@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.
+ *
+ *      Neither Michael Stickel nor 4G Systems admit liability nor provide
+ *      warranty for any of this software. This material is provided
+ *      "AS-IS" and at no charge.
+ *
+ *      (c) Copyright 2005    4G Systems <info@4g-systems.biz>
+ *
+ *      Release 0.01.
+ *      Author: Michael Stickel  michael.stickel@4g-systems.biz
+ *
+ *      Release 0.02.
+ *      Author: Florian Fainelli florian@openwrt.org
+ *              use the Linux watchdog/timer APIs
+ *
+ *      Release 0.03.
+ *      Author: Mathias Adam <m.adam--linux@adamis.de>
+ *              make it a generic gpio watchdog driver
+ *
+ *      The Watchdog is configured to reset the MTX-1
+ *      if it is not triggered for 100 seconds.
+ *      It should not be triggered more often than 1.6 seconds.
+ *
+ *      A timer triggers the watchdog every 5 seconds, until
+ *      it is opened for the first time. After the first open
+ *      it MUST be triggered every 2..95 seconds.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/timer.h>
+#include <linux/completion.h>
+#include <linux/jiffies.h>
+#include <linux/watchdog.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <linux/gpio.h>
+#include <linux/old_gpio_wdt.h>
+
+static int ticks = 100 * HZ;
+
+static struct {
+	struct completion stop;
+	spinlock_t lock;
+	int running;
+	struct timer_list timer;
+	int queue;
+	int default_ticks;
+	unsigned long inuse;
+	unsigned gpio;
+	unsigned int gstate;
+	int interval;
+	int first_interval;
+} gpio_wdt_device;
+
+static void gpio_wdt_trigger(unsigned long unused)
+{
+	spin_lock(&gpio_wdt_device.lock);
+	if (gpio_wdt_device.running && ticks > 0)
+		ticks -= gpio_wdt_device.interval;
+
+	/* toggle wdt gpio */
+	gpio_wdt_device.gstate = !gpio_wdt_device.gstate;
+	gpio_set_value(gpio_wdt_device.gpio, gpio_wdt_device.gstate);
+
+	if (gpio_wdt_device.queue && ticks > 0)
+		mod_timer(&gpio_wdt_device.timer, jiffies + gpio_wdt_device.interval);
+	else
+		complete(&gpio_wdt_device.stop);
+	spin_unlock(&gpio_wdt_device.lock);
+}
+
+static void gpio_wdt_reset(void)
+{
+	ticks = gpio_wdt_device.default_ticks;
+}
+
+
+static void gpio_wdt_start(void)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&gpio_wdt_device.lock, flags);
+	if (!gpio_wdt_device.queue) {
+		gpio_wdt_device.queue = 1;
+		gpio_wdt_device.gstate = 1;
+		gpio_set_value(gpio_wdt_device.gpio, 1);
+		mod_timer(&gpio_wdt_device.timer, jiffies + gpio_wdt_device.first_interval);
+	}
+	gpio_wdt_device.running++;
+	spin_unlock_irqrestore(&gpio_wdt_device.lock, flags);
+}
+
+static int gpio_wdt_stop(void)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&gpio_wdt_device.lock, flags);
+	if (gpio_wdt_device.queue) {
+		gpio_wdt_device.queue = 0;
+		gpio_wdt_device.gstate = 0;
+		gpio_set_value(gpio_wdt_device.gpio, 0);
+	}
+	ticks = gpio_wdt_device.default_ticks;
+	spin_unlock_irqrestore(&gpio_wdt_device.lock, flags);
+	return 0;
+}
+
+/* Filesystem functions */
+
+static int gpio_wdt_open(struct inode *inode, struct file *file)
+{
+	if (test_and_set_bit(0, &gpio_wdt_device.inuse))
+		return -EBUSY;
+	return nonseekable_open(inode, file);
+}
+
+
+static int gpio_wdt_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &gpio_wdt_device.inuse);
+	return 0;
+}
+
+static long gpio_wdt_ioctl(struct file *file, unsigned int cmd,
+							unsigned long arg)
+{
+	void __user *argp = (void __user *)arg;
+	int __user *p = (int __user *)argp;
+	unsigned int value;
+	static const struct watchdog_info ident = {
+		.options = WDIOF_CARDRESET,
+		.identity = "GPIO WDT",
+	};
+
+	switch (cmd) {
+	case WDIOC_GETSUPPORT:
+		if (copy_to_user(argp, &ident, sizeof(ident)))
+			return -EFAULT;
+		break;
+	case WDIOC_GETSTATUS:
+	case WDIOC_GETBOOTSTATUS:
+		put_user(0, p);
+		break;
+	case WDIOC_SETOPTIONS:
+		if (get_user(value, p))
+			return -EFAULT;
+		if (value & WDIOS_ENABLECARD)
+			gpio_wdt_start();
+		else if (value & WDIOS_DISABLECARD)
+			gpio_wdt_stop();
+		else
+			return -EINVAL;
+		return 0;
+	case WDIOC_KEEPALIVE:
+		gpio_wdt_reset();
+		break;
+	default:
+		return -ENOTTY;
+	}
+	return 0;
+}
+
+
+static ssize_t gpio_wdt_write(struct file *file, const char *buf,
+						size_t count, loff_t *ppos)
+{
+	if (!count)
+		return -EIO;
+	gpio_wdt_reset();
+	return count;
+}
+
+static const struct file_operations gpio_wdt_fops = {
+	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
+	.unlocked_ioctl	= gpio_wdt_ioctl,
+	.open		= gpio_wdt_open,
+	.write		= gpio_wdt_write,
+	.release	= gpio_wdt_release,
+};
+
+
+static struct miscdevice gpio_wdt_misc = {
+	.minor	= WATCHDOG_MINOR,
+	.name	= "watchdog",
+	.fops	= &gpio_wdt_fops,
+};
+
+
+static int gpio_wdt_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct gpio_wdt_platform_data *gpio_wdt_data = pdev->dev.platform_data;
+
+	gpio_wdt_device.gpio = gpio_wdt_data->gpio;
+	gpio_wdt_device.interval = gpio_wdt_data->interval;
+	gpio_wdt_device.first_interval = gpio_wdt_data->first_interval;
+	if (gpio_wdt_device.first_interval <= 0) {
+		gpio_wdt_device.first_interval = gpio_wdt_device.interval;
+	}
+
+	ret = gpio_request(gpio_wdt_device.gpio, "gpio-wdt");
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to request gpio");
+		return ret;
+	}
+
+	spin_lock_init(&gpio_wdt_device.lock);
+	init_completion(&gpio_wdt_device.stop);
+	gpio_wdt_device.queue = 0;
+	clear_bit(0, &gpio_wdt_device.inuse);
+	setup_timer(&gpio_wdt_device.timer, gpio_wdt_trigger, 0L);
+	gpio_wdt_device.default_ticks = ticks;
+
+	gpio_wdt_start();
+	dev_info(&pdev->dev, "GPIO Hardware Watchdog driver (gpio=%i interval=%i/%i)\n",
+		gpio_wdt_data->gpio, gpio_wdt_data->first_interval, gpio_wdt_data->interval);
+	return 0;
+}
+
+static int gpio_wdt_remove(struct platform_device *pdev)
+{
+	/* FIXME: do we need to lock this test ? */
+	if (gpio_wdt_device.queue) {
+		gpio_wdt_device.queue = 0;
+		wait_for_completion(&gpio_wdt_device.stop);
+	}
+
+	gpio_free(gpio_wdt_device.gpio);
+	misc_deregister(&gpio_wdt_misc);
+	return 0;
+}
+
+static struct platform_driver gpio_wdt_driver = {
+	.probe = gpio_wdt_probe,
+	.remove = gpio_wdt_remove,
+	.driver.name = "gpio-wdt",
+	.driver.owner = THIS_MODULE,
+};
+
+static int __init gpio_wdt_init(void)
+{
+	return platform_driver_register(&gpio_wdt_driver);
+}
+arch_initcall(gpio_wdt_init);
+
+/*
+ * We do wdt initialization in two steps: arch_initcall probes the wdt
+ * very early to start pinging the watchdog (misc devices are not yet
+ * available), and later module_init() just registers the misc device.
+ */
+static int gpio_wdt_init_late(void)
+{
+	int ret;
+
+	ret = misc_register(&gpio_wdt_misc);
+	if (ret < 0) {
+		pr_err("GPIO_WDT: failed to register misc device\n");
+		return ret;
+	}
+	return 0;
+}
+#ifndef MODULE
+module_init(gpio_wdt_init_late);
+#endif
+
+static void __exit gpio_wdt_exit(void)
+{
+	platform_driver_unregister(&gpio_wdt_driver);
+}
+module_exit(gpio_wdt_exit);
+
+MODULE_AUTHOR("Michael Stickel, Florian Fainelli, Mathias Adam");
+MODULE_DESCRIPTION("Driver for GPIO hardware watchdogs");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
+MODULE_ALIAS("platform:gpio-wdt");
+--- /dev/null
+++ b/include/linux/old_gpio_wdt.h
+@@ -0,0 +1,21 @@
+/*
+ *  Definitions for the GPIO watchdog driver
+ *
+ *  Copyright (C) 2013 Mathias Adam <m.adam--linux@adamis.de>
+ *
+ *  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 _GPIO_WDT_H_
+#define _GPIO_WDT_H_
+
+struct gpio_wdt_platform_data {
+	int	gpio;		/* GPIO line number */
+	int	interval;	/* watchdog reset interval in system ticks */
+	int	first_interval;	/* first wd reset interval in system ticks */
+};
+
+#endif /* _GPIO_WDT_H_ */
--- a/target/linux/brcm47xx/patches-4.19/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch
+++ b/target/linux/brcm47xx/patches-4.19/900-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
+ 	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;
--- a/target/linux/brcm47xx/patches-4.19/940-bcm47xx-yenta.patch
+++ b/target/linux/brcm47xx/patches-4.19/940-bcm47xx-yenta.patch
@ -0,0 +1,46 @@
+--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
+@@ -920,6 +920,8 @@ 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);
+@@ -935,6 +937,7 @@ 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;
+ 
+@@ -1019,6 +1022,10 @@ 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.. */
--- a/target/linux/brcm47xx/patches-4.19/976-ssb_increase_pci_delay.patch
+++ b/target/linux/brcm47xx/patches-4.19/976-ssb_increase_pci_delay.patch
@ -0,0 +1,11 @@
+--- a/drivers/ssb/driver_pcicore.c
+++ b/drivers/ssb/driver_pcicore.c
+@@ -390,7 +390,7 @@ 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);
+ }
+ 
--- a/target/linux/brcm47xx/patches-4.19/999-wl_exports.patch
+++ b/target/linux/brcm47xx/patches-4.19/999-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[] = {0x6000, 0x8000, 0xF000, 0x10000};
+ static int cfe_env;
+--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
+@@ -64,6 +64,7 @@ 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 */
+