rb532: Add support for kernel 4.4

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

target/linux/rb532/config-4.4

@@ -0,0 +1,147 @@
+CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
+CONFIG_ARCH_DISCARD_MEMBLOCK=y
+CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
+CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_REQUIRE_GPIOLIB=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
+CONFIG_ATA=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_CEVT_R4K=y
+CONFIG_CLONE_BACKWARDS=y
+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_MIPSR1=y
+CONFIG_CPU_R4K_CACHE_TLB=y
+CONFIG_CPU_R4K_FPU=y
+CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
+CONFIG_CPU_SUPPORTS_HIGHMEM=y
+CONFIG_CRC16=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_CSRC_R4K=y
+CONFIG_DMA_NONCOHERENT=y
+# CONFIG_ENABLE_WARN_DEPRECATED is not set
+CONFIG_EXT4_FS=y
+CONFIG_FS_MBCACHE=y
+CONFIG_GENERIC_ATOMIC64=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_IO=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_DEVRES=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_HARDWARE_WATCHPOINTS=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
+CONFIG_HAVE_ARCH_JUMP_LABEL=y
+CONFIG_HAVE_ARCH_KGDB=y
+# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_HAVE_DEBUG_KMEMLEAK=y
+CONFIG_HAVE_DMA_API_DEBUG=y
+CONFIG_HAVE_DMA_ATTRS=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_FUNCTION_TRACE_MCOUNT_TEST=y
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_HAVE_GENERIC_HARDIRQS=y
+CONFIG_HAVE_IDE=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_HIGH_RES_TIMERS is not set
+CONFIG_HW_HAS_PCI=y
+CONFIG_HW_RANDOM=y
+CONFIG_HZ=250
+# CONFIG_HZ_100 is not set
+CONFIG_HZ_250=y
+CONFIG_HZ_PERIODIC=y
+CONFIG_IMAGE_CMDLINE_HACK=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQ_CPU=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
+CONFIG_KEXEC=y
+CONFIG_KORINA=y
+CONFIG_LEDS_MIKROTIK_RB532=y
+CONFIG_MIKROTIK_RB532=y
+CONFIG_MIPS=y
+# CONFIG_MIPS_HUGE_TLB_SUPPORT is not set
+CONFIG_MIPS_L1_CACHE_SHIFT=4
+# CONFIG_MIPS_MACHINE is not set
+CONFIG_MIPS_MT_DISABLED=y
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_MTD_BLOCK2MTD=y
+CONFIG_MTD_CFI_ADV_OPTIONS=y
+# CONFIG_MTD_CFI_AMDSTD is not set
+CONFIG_MTD_CFI_GEOMETRY=y
+# CONFIG_MTD_CFI_INTELEXT is not set
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+CONFIG_MTD_NAND=y
+CONFIG_MTD_NAND_ECC=y
+CONFIG_MTD_NAND_PLATFORM=y
+CONFIG_MTD_PHYSMAP=y
+# CONFIG_MTD_ROOTFS_ROOT_DEV is not set
+CONFIG_MTD_ROOTFS_SPLIT=y
+# CONFIG_MTD_SM_COMMON is not set
+# CONFIG_MTD_SPLIT is not set
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_PER_CPU_KM=y
+CONFIG_NO_GENERIC_PCI_IOPORT_MAP=y
+# CONFIG_OF is not set
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_PATA_RB532=y
+CONFIG_PCI=y
+CONFIG_PCI_DISABLE_COMMON_QUIRKS=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PERF_USE_VMALLOC=y
+# CONFIG_PREEMPT_RCU is not set
+CONFIG_RC32434_WDT=y
+# CONFIG_RCU_STALL_COMMON is not set
+CONFIG_SCSI=y
+# CONFIG_SCSI_LOWLEVEL is not set
+# CONFIG_SCSI_MULTI_LUN is not set
+# CONFIG_SCSI_PROC_FS is not set
+# CONFIG_SWAP is not set
+CONFIG_SWAP_IO_SPACE=y
+CONFIG_SYS_HAS_CPU_MIPS32_R1=y
+CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
+CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
+CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_UIDGID_CONVERTED=y
+CONFIG_USB_ARCH_HAS_XHCI=y
+CONFIG_VIA_RHINE=y
+CONFIG_VIA_RHINE_MMIO=y
+CONFIG_YAFFS_9BYTE_TAGS=y
+# CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED is not set
+CONFIG_YAFFS_AUTO_YAFFS2=y
+# CONFIG_YAFFS_DISABLE_BACKGROUND is not set
+# CONFIG_YAFFS_DISABLE_BLOCK_REFRESHING is not set
+# CONFIG_YAFFS_DISABLE_TAGS_ECC is not set
+# CONFIG_YAFFS_EMPTY_LOST_AND_FOUND is not set
+CONFIG_YAFFS_FS=y
+CONFIG_YAFFS_XATTR=y
+CONFIG_YAFFS_YAFFS1=y
+CONFIG_YAFFS_YAFFS2=y
+CONFIG_ZONE_DMA_FLAG=0

target/linux/rb532/patches-4.4/001-cmdline_hack.patch

@@ -0,0 +1,20 @@
+--- a/arch/mips/rb532/prom.c
++++ b/arch/mips/rb532/prom.c
+@@ -67,6 +67,7 @@ static inline unsigned long tag2ul(char
+ 	return simple_strtoul(num, 0, 10);
+ }
+ 
++extern char __image_cmdline[];
+ void __init prom_setup_cmdline(void)
+ {
+ 	static char cmd_line[COMMAND_LINE_SIZE] __initdata;
+@@ -108,6 +109,9 @@ void __init prom_setup_cmdline(void)
+ 	}
+ 	*(cp++) = ' ';
+ 
++	strcpy(cp,(__image_cmdline));
++	cp += strlen(__image_cmdline);
++
+ 	i = strlen(arcs_cmdline);
+ 	if (i > 0) {
+ 		*(cp++) = ' ';

target/linux/rb532/patches-4.4/002-rb532_nand_fixup.patch

@@ -0,0 +1,47 @@
+--- a/arch/mips/rb532/devices.c
++++ b/arch/mips/rb532/devices.c
+@@ -141,6 +141,19 @@ static struct platform_device cf_slot0 =
+ };
+ 
+ /* Resources and device for NAND */
++
++/*
++ * We need to use the OLD Yaffs-1 OOB layout, otherwise the RB bootloader
++ * will not be able to find the kernel that we load.  So set the oobinfo
++ * when creating the partitions
++ */
++static struct nand_ecclayout rb532_nand_ecclayout = {
++	.eccbytes       = 6,
++	.eccpos         = { 8, 9, 10, 13, 14, 15 },
++	.oobavail       = 9,
++	.oobfree        = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
++};
++
+ static int rb532_dev_ready(struct mtd_info *mtd)
+ {
+ 	return gpio_get_value(GPIO_RDY);
+@@ -255,6 +268,16 @@ static struct platform_device *rb532_dev
+ /* NAND definitions */
+ #define NAND_CHIP_DELAY 25
+ 
++static int rb532_nand_fixup(struct mtd_info *mtd)
++{
++	struct nand_chip *chip = mtd->priv;
++
++	if (mtd->writesize == 512)
++		chip->ecc.layout = &rb532_nand_ecclayout;
++
++	return 0;
++}
++
+ static void __init rb532_nand_setup(void)
+ {
+ 	switch (mips_machtype) {
+@@ -273,6 +296,7 @@ static void __init rb532_nand_setup(void
+ 	rb532_nand_data.chip.nr_partitions = ARRAY_SIZE(rb532_partition_info);
+ 	rb532_nand_data.chip.partitions = rb532_partition_info;
+ 	rb532_nand_data.chip.chip_delay = NAND_CHIP_DELAY;
++	rb532_nand_data.chip.chip_fixup = &rb532_nand_fixup;
+ }
+ 
+ 

target/linux/rb532/patches-4.4/004-rb532_partition_info-rename-rootfs-to-rootfs_onboard.patch

@@ -0,0 +1,11 @@
+--- a/arch/mips/rb532/devices.c
++++ b/arch/mips/rb532/devices.c
+@@ -203,7 +203,7 @@ static struct mtd_partition rb532_partit
+ 		.offset = 0,
+ 		.size = 4 * 1024 * 1024,
+ 	}, {
+-		.name = "rootfs",
++		.name = "rootfs_onboard",
+ 		.offset = MTDPART_OFS_NXTBLK,
+ 		.size = MTDPART_SIZ_FULL,
+ 	}