cns3xxx: add support for kernel 4.19

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>

24 files changed, 1192 insertions, 0 deletions

diff --git a/target/linux/cns3xxx/patches-4.19/000-cns3xxx_arch_include.patch b/target/linux/cns3xxx/patches-4.19/000-cns3xxx_arch_include.patch
new file mode 100644
index 0000000000..3ae759021a
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/000-cns3xxx_arch_include.patch
@@ -0,0 +1,9 @@
+--- a/arch/arm/mach-cns3xxx/Makefile
++++ b/arch/arm/mach-cns3xxx/Makefile
+@@ -1,4 +1,6 @@
+ # SPDX-License-Identifier: GPL-2.0
++ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include
++
+ obj-$(CONFIG_ARCH_CNS3XXX)		+= cns3xxx.o
+ cns3xxx-y				+= core.o pm.o
+ cns3xxx-$(CONFIG_ATAGS)			+= devices.o
diff --git a/target/linux/cns3xxx/patches-4.19/001-arm_openwrt_machtypes.patch b/target/linux/cns3xxx/patches-4.19/001-arm_openwrt_machtypes.patch
new file mode 100644
index 0000000000..f323deee47
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/001-arm_openwrt_machtypes.patch
@@ -0,0 +1,10 @@
+--- a/arch/arm/tools/mach-types
++++ b/arch/arm/tools/mach-types
+@@ -449,6 +449,7 @@ gplugd			MACH_GPLUGD		GPLUGD			2625
+ qsd8x50a_st1_5		MACH_QSD8X50A_ST1_5	QSD8X50A_ST1_5		2627
+ mx23evk			MACH_MX23EVK		MX23EVK			2629
+ ap4evb			MACH_AP4EVB		AP4EVB			2630
++gw2388			MACH_GW2388		GW2388			2635
+ mityomapl138		MACH_MITYOMAPL138	MITYOMAPL138		2650
+ guruplug		MACH_GURUPLUG		GURUPLUG		2659
+ spear310		MACH_SPEAR310		SPEAR310		2660
diff --git a/target/linux/cns3xxx/patches-4.19/010-arm_introduce-dma-fiq-irq-broadcast.patch b/target/linux/cns3xxx/patches-4.19/010-arm_introduce-dma-fiq-irq-broadcast.patch
new file mode 100644
index 0000000000..45f8feead4
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/010-arm_introduce-dma-fiq-irq-broadcast.patch
@@ -0,0 +1,80 @@
+--- a/arch/arm/include/asm/glue-cache.h
++++ b/arch/arm/include/asm/glue-cache.h
+@@ -156,9 +156,15 @@ static inline void nop_dma_unmap_area(co
+ #define __cpuc_flush_user_range		__glue(_CACHE,_flush_user_cache_range)
+ #define __cpuc_coherent_kern_range	__glue(_CACHE,_coherent_kern_range)
+ #define __cpuc_coherent_user_range	__glue(_CACHE,_coherent_user_range)
+-#define __cpuc_flush_dcache_area	__glue(_CACHE,_flush_kern_dcache_area)
+ 
+-#define dmac_flush_range		__glue(_CACHE,_dma_flush_range)
++#ifndef CONFIG_DMA_CACHE_FIQ_BROADCAST
++# define __cpuc_flush_dcache_area	__glue(_CACHE,_flush_kern_dcache_area)
++# define dmac_flush_range		__glue(_CACHE,_dma_flush_range)
++#else
++# define __cpuc_flush_dcache_area	__glue(fiq,_flush_kern_dcache_area)
++# define dmac_flush_range		__glue(fiq,_dma_flush_range)
++#endif
++
+ #endif
+ 
+ #endif
+--- a/arch/arm/mm/Kconfig
++++ b/arch/arm/mm/Kconfig
+@@ -916,6 +916,17 @@ config DMA_CACHE_RWFO
+ 	  in hardware, other workarounds are needed (e.g. cache
+ 	  maintenance broadcasting in software via FIQ).
+ 
++config DMA_CACHE_FIQ_BROADCAST
++	bool "Enable fiq broadcast DMA cache maintenance"
++	depends on CPU_V6K && SMP
++	select FIQ
++	help
++	  The Snoop Control Unit on ARM11MPCore does not detect the
++	  cache maintenance operations and the dma_{map,unmap}_area()
++	  functions may leave stale cache entries on other CPUs. By
++	  enabling this option, fiq broadcast in the ARMv6
++	  DMA cache maintenance functions is performed.
++
+ config OUTER_CACHE
+ 	bool
+ 
+--- a/arch/arm/mm/flush.c
++++ b/arch/arm/mm/flush.c
+@@ -319,6 +319,7 @@ void __sync_icache_dcache(pte_t pteval)
+ void flush_dcache_page(struct page *page)
+ {
+ 	struct address_space *mapping;
++	bool skip_broadcast = true;
+ 
+ 	/*
+ 	 * The zero page is never written to, so never has any dirty
+@@ -335,7 +336,10 @@ void flush_dcache_page(struct page *page
+ 
+ 	mapping = page_mapping_file(page);
+ 
+-	if (!cache_ops_need_broadcast() &&
++#ifndef CONFIG_DMA_CACHE_FIQ_BROADCAST
++        skip_broadcast = !cache_ops_need_broadcast();
++#endif
++        if (skip_broadcast &&
+ 	    mapping && !page_mapcount(page))
+ 		clear_bit(PG_dcache_clean, &page->flags);
+ 	else {
+--- a/arch/arm/mm/dma.h
++++ b/arch/arm/mm/dma.h
+@@ -5,8 +5,13 @@
+ #include <asm/glue-cache.h>
+ 
+ #ifndef MULTI_CACHE
+-#define dmac_map_area			__glue(_CACHE,_dma_map_area)
+-#define dmac_unmap_area 		__glue(_CACHE,_dma_unmap_area)
++#ifndef CONFIG_DMA_CACHE_FIQ_BROADCAST
++# define dmac_map_area			__glue(_CACHE,_dma_map_area)
++# define dmac_unmap_area 		__glue(_CACHE,_dma_unmap_area)
++#else
++# define dmac_map_area			__glue(fiq,_dma_map_area)
++# define dmac_unmap_area			__glue(fiq,_dma_unmap_area)
++#endif
+ 
+ /*
+  * These are private to the dma-mapping API.  Do not use directly.
diff --git a/target/linux/cns3xxx/patches-4.19/020-watchdog_support.patch b/target/linux/cns3xxx/patches-4.19/020-watchdog_support.patch
new file mode 100644
index 0000000000..e626ff29b7
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/020-watchdog_support.patch
@@ -0,0 +1,184 @@
+Add a watchdog driver for ARM MPcore processors.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+--- a/drivers/watchdog/Kconfig
++++ b/drivers/watchdog/Kconfig
+@@ -375,6 +375,13 @@ config KS8695_WATCHDOG
+ 	  Watchdog timer embedded into KS8695 processor. This will reboot your
+ 	  system when the timeout is reached.
+ 
++config MPCORE_WATCHDOG
++	tristate "MPcore watchdog"
++	depends on HAVE_ARM_TWD
++	select WATCHDOG_CORE
++	help
++	  Watchdog timer embedded into the MPcore system
++
+ config HAVE_S3C2410_WATCHDOG
+ 	bool
+ 	help
+--- a/drivers/watchdog/Makefile
++++ b/drivers/watchdog/Makefile
+@@ -49,6 +49,7 @@ obj-$(CONFIG_977_WATCHDOG) += wdt977.o
+ obj-$(CONFIG_FTWDT010_WATCHDOG) += ftwdt010_wdt.o
+ obj-$(CONFIG_IXP4XX_WATCHDOG) += ixp4xx_wdt.o
+ obj-$(CONFIG_KS8695_WATCHDOG) += ks8695_wdt.o
++obj-$(CONFIG_MPCORE_WATCHDOG) += mpcore_wdt.o
+ obj-$(CONFIG_S3C2410_WATCHDOG) += s3c2410_wdt.o
+ obj-$(CONFIG_SA1100_WATCHDOG) += sa1100_wdt.o
+ obj-$(CONFIG_SAMA5D4_WATCHDOG) += sama5d4_wdt.o
+--- /dev/null
++++ b/drivers/watchdog/mpcore_wdt.c
+@@ -0,0 +1,118 @@
++/*
++ * Watchdog driver for ARM MPcore
++ *
++ * Copyright (C) 2017 Felix Fietkau <nbd@nbd.name>
++ */
++
++#include <linux/export.h>
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/watchdog.h>
++#include <linux/platform_device.h>
++#include <linux/io.h>
++#include <asm/smp_twd.h>
++
++static void __iomem *wdt_base;
++static int wdt_timeout = 60;
++
++static int mpcore_wdt_keepalive(struct watchdog_device *wdd)
++{
++	static int perturb;
++	u32 count;
++
++	count = (twd_timer_get_rate() / 256) * wdt_timeout;
++
++	/* Reload register needs a different value on each refresh */
++	count += perturb;
++	perturb = !perturb;
++
++	iowrite32(count, wdt_base + TWD_WDOG_LOAD);
++
++	return 0;
++}
++
++static int mpcore_wdt_start(struct watchdog_device *wdd)
++{
++	mpcore_wdt_keepalive(wdd);
++
++	/* prescale = 256, mode = 1, enable = 1 */
++	iowrite32(0x0000FF09, wdt_base + TWD_WDOG_CONTROL);
++
++	return 0;
++}
++
++static int mpcore_wdt_stop(struct watchdog_device *wdd)
++{
++	iowrite32(0x12345678, wdt_base + TWD_WDOG_DISABLE);
++	iowrite32(0x87654321, wdt_base + TWD_WDOG_DISABLE);
++	iowrite32(0x0, wdt_base + TWD_WDOG_CONTROL);
++
++	return 0;
++}
++
++static int mpcore_wdt_set_timeout(struct watchdog_device *wdd,
++				 unsigned int timeout)
++{
++	mpcore_wdt_stop(wdd);
++	wdt_timeout = timeout;
++	mpcore_wdt_start(wdd);
++
++	return 0;
++}
++
++static const struct watchdog_info mpcore_wdt_info = {
++	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
++	.identity = "MPcore Watchdog",
++};
++
++static const struct watchdog_ops mpcore_wdt_ops = {
++	.owner = THIS_MODULE,
++	.start = mpcore_wdt_start,
++	.stop  = mpcore_wdt_stop,
++	.ping  = mpcore_wdt_keepalive,
++	.set_timeout = mpcore_wdt_set_timeout,
++};
++
++static struct watchdog_device mpcore_wdt = {
++	.info = &mpcore_wdt_info,
++	.ops = &mpcore_wdt_ops,
++	.min_timeout = 1,
++	.max_timeout = 65535,
++};
++
++static int mpcore_wdt_probe(struct platform_device *pdev)
++{
++	struct resource *res;
++	unsigned long rate = twd_timer_get_rate();
++
++	pr_info("MPCore WD init. clockrate: %lu prescaler: %u countrate: %lu timeout: %us\n", rate, 256, rate / 256, wdt_timeout);
++
++	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	if (!res)
++		return -ENODEV;
++
++	wdt_base = devm_ioremap_resource(&pdev->dev, res);
++	if (IS_ERR(wdt_base))
++		return PTR_ERR(wdt_base);
++
++	watchdog_register_device(&mpcore_wdt);
++	return 0;
++}
++
++static int mpcore_wdt_remove(struct platform_device *dev)
++{
++	watchdog_unregister_device(&mpcore_wdt);
++	return 0;
++}
++
++static struct platform_driver mpcore_wdt_driver = {
++	.probe		= mpcore_wdt_probe,
++	.remove		= mpcore_wdt_remove,
++	.driver		= {
++		.name	= "mpcore_wdt",
++	},
++};
++
++module_platform_driver(mpcore_wdt_driver);
++MODULE_AUTHOR("Felix Fietkau <nbd@nbd.name>");
++MODULE_LICENSE("GPL");
+--- a/arch/arm/include/asm/smp_twd.h
++++ b/arch/arm/include/asm/smp_twd.h
+@@ -34,5 +34,6 @@ struct twd_local_timer name __initdata =
+ };
+ 
+ int twd_local_timer_register(struct twd_local_timer *);
++unsigned long twd_timer_get_rate(void);
+ 
+ #endif
+--- a/arch/arm/kernel/smp_twd.c
++++ b/arch/arm/kernel/smp_twd.c
+@@ -15,6 +15,7 @@
+ #include <linux/delay.h>
+ #include <linux/device.h>
+ #include <linux/err.h>
++#include <linux/export.h>
+ #include <linux/smp.h>
+ #include <linux/jiffies.h>
+ #include <linux/clockchips.h>
+@@ -380,6 +381,14 @@ int __init twd_local_timer_register(stru
+ 	return twd_local_timer_common_register(NULL);
+ }
+ 
++/* Needed by mpcore_wdt */
++unsigned long twd_timer_get_rate(void)
++{
++	return twd_timer_rate;
++}
++EXPORT_SYMBOL_GPL(twd_timer_get_rate);
++
++
+ #ifdef CONFIG_OF
+ static int __init twd_local_timer_of_register(struct device_node *np)
+ {
diff --git a/target/linux/cns3xxx/patches-4.19/025-smp_support.patch b/target/linux/cns3xxx/patches-4.19/025-smp_support.patch
new file mode 100644
index 0000000000..dc8e4b03c2
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/025-smp_support.patch
@@ -0,0 +1,30 @@
+--- a/arch/arm/mach-cns3xxx/Makefile
++++ b/arch/arm/mach-cns3xxx/Makefile
+@@ -6,3 +6,5 @@ cns3xxx-y				+= core.o pm.o
+ cns3xxx-$(CONFIG_ATAGS)			+= devices.o
+ cns3xxx-$(CONFIG_PCI)			+= pcie.o
+ cns3xxx-$(CONFIG_MACH_CNS3420VB)	+= cns3420vb.o
++cns3xxx-$(CONFIG_SMP)			+= platsmp.o headsmp.o
++cns3xxx-$(CONFIG_HOTPLUG_CPU)		+= hotplug.o
+--- a/arch/arm/mach-cns3xxx/Kconfig
++++ b/arch/arm/mach-cns3xxx/Kconfig
+@@ -3,6 +3,9 @@ menuconfig ARCH_CNS3XXX
+ 	bool "Cavium Networks CNS3XXX family"
+ 	depends on ARCH_MULTI_V6
+ 	select ARM_GIC
++	select HAVE_ARM_SCU if SMP
++	select HAVE_ARM_TWD
++	select HAVE_SMP
+ 	help
+ 	  Support for Cavium Networks CNS3XXX platform.
+ 
+--- a/arch/arm/mach-cns3xxx/core.h
++++ b/arch/arm/mach-cns3xxx/core.h
+@@ -13,6 +13,7 @@
+ 
+ #include <linux/reboot.h>
+ 
++extern struct smp_operations cns3xxx_smp_ops;
+ extern void cns3xxx_timer_init(void);
+ 
+ #ifdef CONFIG_CACHE_L2X0
diff --git a/target/linux/cns3xxx/patches-4.19/030-pcie_clock.patch b/target/linux/cns3xxx/patches-4.19/030-pcie_clock.patch
new file mode 100644
index 0000000000..66c3a99ae1
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/030-pcie_clock.patch
@@ -0,0 +1,11 @@
+--- a/arch/arm/mach-cns3xxx/pcie.c
++++ b/arch/arm/mach-cns3xxx/pcie.c
+@@ -281,8 +281,6 @@ void __init cns3xxx_pcie_init_late(void)
+ 			"imprecise external abort");
+ 
+ 	for (i = 0; i < ARRAY_SIZE(cns3xxx_pcie); i++) {
+-		cns3xxx_pwr_clk_en(0x1 << PM_CLK_GATE_REG_OFFSET_PCIE(i));
+-		cns3xxx_pwr_soft_rst(0x1 << PM_SOFT_RST_REG_OFFST_PCIE(i));
+ 		cns3xxx_pcie_check_link(&cns3xxx_pcie[i]);
+ 		cns3xxx_pcie_hw_init(&cns3xxx_pcie[i]);
+ 		private_data = &cns3xxx_pcie[i];
diff --git a/target/linux/cns3xxx/patches-4.19/040-fiq_support.patch b/target/linux/cns3xxx/patches-4.19/040-fiq_support.patch
new file mode 100644
index 0000000000..bee8c1ef24
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/040-fiq_support.patch
@@ -0,0 +1,40 @@
+--- a/arch/arm/mach-cns3xxx/Kconfig
++++ b/arch/arm/mach-cns3xxx/Kconfig
+@@ -6,6 +6,7 @@ menuconfig ARCH_CNS3XXX
+ 	select HAVE_ARM_SCU if SMP
+ 	select HAVE_ARM_TWD
+ 	select HAVE_SMP
++	select FIQ
+ 	help
+ 	  Support for Cavium Networks CNS3XXX platform.
+ 
+--- a/arch/arm/mach-cns3xxx/Makefile
++++ b/arch/arm/mach-cns3xxx/Makefile
+@@ -6,5 +6,5 @@ cns3xxx-y				+= core.o pm.o
+ cns3xxx-$(CONFIG_ATAGS)			+= devices.o
+ cns3xxx-$(CONFIG_PCI)			+= pcie.o
+ cns3xxx-$(CONFIG_MACH_CNS3420VB)	+= cns3420vb.o
+-cns3xxx-$(CONFIG_SMP)			+= platsmp.o headsmp.o
++cns3xxx-$(CONFIG_SMP)			+= platsmp.o headsmp.o cns3xxx_fiq.o
+ cns3xxx-$(CONFIG_HOTPLUG_CPU)		+= hotplug.o
+--- a/arch/arm/mach-cns3xxx/cns3xxx.h
++++ b/arch/arm/mach-cns3xxx/cns3xxx.h
+@@ -261,6 +261,7 @@
+ #define MISC_PCIE_INT_MASK(x)			MISC_MEM_MAP(0x978 + (x) * 0x100)
+ #define MISC_PCIE_INT_STATUS(x)			MISC_MEM_MAP(0x97C + (x) * 0x100)
+ 
++#define MISC_FIQ_CPU(x)				MISC_MEM_MAP(0xA58 - (x) * 0x4)
+ /*
+  * Power management and clock control
+  */
+--- a/arch/arm/mm/Kconfig
++++ b/arch/arm/mm/Kconfig
+@@ -899,7 +899,7 @@ config VDSO
+ 
+ config DMA_CACHE_RWFO
+ 	bool "Enable read/write for ownership DMA cache maintenance"
+-	depends on CPU_V6K && SMP
++	depends on CPU_V6K && SMP && !ARCH_CNS3XXX
+ 	default y
+ 	help
+ 	  The Snoop Control Unit on ARM11MPCore does not detect the
diff --git a/target/linux/cns3xxx/patches-4.19/045-twd_base.patch b/target/linux/cns3xxx/patches-4.19/045-twd_base.patch
new file mode 100644
index 0000000000..e722b01bbc
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/045-twd_base.patch
@@ -0,0 +1,43 @@
+--- a/arch/arm/mach-cns3xxx/core.c
++++ b/arch/arm/mach-cns3xxx/core.c
+@@ -17,6 +17,7 @@
+ #include <linux/platform_device.h>
+ #include <linux/usb/ehci_pdriver.h>
+ #include <linux/usb/ohci_pdriver.h>
++#include <asm/smp_twd.h>
+ #include <asm/mach/arch.h>
+ #include <asm/mach/map.h>
+ #include <asm/mach/time.h>
+@@ -26,6 +27,8 @@
+ #include "core.h"
+ #include "pm.h"
+ 
++#define IRQ_LOCALTIMER 29
++
+ static struct map_desc cns3xxx_io_desc[] __initdata = {
+ 	{
+ 		.virtual	= CNS3XXX_TC11MP_SCU_BASE_VIRT,
+@@ -198,6 +201,15 @@ static struct irqaction cns3xxx_timer_ir
+ 	.handler	= cns3xxx_timer_interrupt,
+ };
+ 
++static void __init cns3xxx_init_twd(void)
++{
++	static DEFINE_TWD_LOCAL_TIMER(cns3xx_twd_local_timer,
++		CNS3XXX_TC11MP_TWD_BASE,
++		IRQ_LOCALTIMER);
++
++	twd_local_timer_register(&cns3xx_twd_local_timer);
++}
++
+ /*
+  * Set up the clock source and clock events devices
+  */
+@@ -251,6 +263,7 @@ static void __init __cns3xxx_timer_init(
+ 	setup_irq(timer_irq, &cns3xxx_timer_irq);
+ 
+ 	cns3xxx_clockevents_init(timer_irq);
++	cns3xxx_init_twd();
+ }
+ 
+ void __init cns3xxx_timer_init(void)
diff --git a/target/linux/cns3xxx/patches-4.19/055-pcie_io.patch b/target/linux/cns3xxx/patches-4.19/055-pcie_io.patch
new file mode 100644
index 0000000000..4680853e6e
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/055-pcie_io.patch
@@ -0,0 +1,19 @@
+--- a/arch/arm/mach-cns3xxx/core.c
++++ b/arch/arm/mach-cns3xxx/core.c
+@@ -81,6 +81,16 @@ static struct map_desc cns3xxx_io_desc[]
+ 		.pfn		= __phys_to_pfn(CNS3XXX_PCIE1_CFG1_BASE),
+ 		.length		= SZ_16M,
+ 		.type		= MT_DEVICE,
++	}, {
++		.virtual	= CNS3XXX_PCIE0_IO_BASE_VIRT,
++		.pfn		= __phys_to_pfn(CNS3XXX_PCIE0_IO_BASE),
++		.length		= SZ_16M,
++		.type		= MT_DEVICE,
++	}, {
++		.virtual	= CNS3XXX_PCIE1_IO_BASE_VIRT,
++		.pfn		= __phys_to_pfn(CNS3XXX_PCIE1_IO_BASE),
++		.length		= SZ_16M,
++		.type		= MT_DEVICE,
+ #endif
+ 	},
+ };
diff --git a/target/linux/cns3xxx/patches-4.19/060-pcie_abort.patch b/target/linux/cns3xxx/patches-4.19/060-pcie_abort.patch
new file mode 100644
index 0000000000..87b1526c3a
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/060-pcie_abort.patch
@@ -0,0 +1,109 @@
+--- a/arch/arm/mach-cns3xxx/pcie.c
++++ b/arch/arm/mach-cns3xxx/pcie.c
+@@ -86,6 +86,79 @@ static void __iomem *cns3xxx_pci_map_bus
+ 	return base + where + (devfn << 12);
+ }
+ 
++static inline int check_master_abort(struct pci_bus *bus, unsigned int devfn, int where)
++{
++	struct cns3xxx_pcie *cnspci = pbus_to_cnspci(bus);
++
++  /* check PCI-compatible status register after access */
++	if (cnspci->linked) {
++		void __iomem *host_base;
++		u32 sreg, ereg;
++
++		host_base = (void __iomem *) cnspci->cfg_bases[CNS3XXX_HOST_TYPE].virtual;
++		sreg = __raw_readw(host_base + 0x6) & 0xF900;
++		ereg = __raw_readl(host_base + 0x104); // Uncorrectable Error Status Reg
++
++		if (sreg | ereg) {
++			/* SREG:
++			 *  BIT15 - Detected Parity Error
++			 *  BIT14 - Signaled System Error
++			 *  BIT13 - Received Master Abort
++			 *  BIT12 - Received Target Abort
++			 *  BIT11 - Signaled Target Abort
++			 *  BIT08 - Master Data Parity Error
++			 *
++			 * EREG:
++			 *  BIT20 - Unsupported Request
++			 *  BIT19 - ECRC
++			 *  BIT18 - Malformed TLP
++			 *  BIT17 - Receiver Overflow
++			 *  BIT16 - Unexpected Completion
++			 *  BIT15 - Completer Abort
++			 *  BIT14 - Completion Timeout
++			 *  BIT13 - Flow Control Protocol Error
++			 *  BIT12 - Poisoned TLP
++			 *  BIT04 - Data Link Protocol Error
++			 *
++			 * TODO: see Documentation/pci-error-recovery.txt
++			 *    implement error_detected handler
++			 */
++/*
++			printk("pci error: %04d:%02x:%02x.%02x sreg=0x%04x ereg=0x%08x", pci_domain_nr(bus), bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn), sreg, ereg);
++			if (sreg & BIT(15)) printk(" <PERR");
++			if (sreg & BIT(14)) printk(" >SERR");
++			if (sreg & BIT(13)) printk(" <MABRT");
++			if (sreg & BIT(12)) printk(" <TABRT");
++			if (sreg & BIT(11)) printk(" >TABRT");
++			if (sreg & BIT( 8)) printk(" MPERR");
++
++			if (ereg & BIT(20)) printk(" Unsup");
++			if (ereg & BIT(19)) printk(" ECRC");
++			if (ereg & BIT(18)) printk(" MTLP");
++			if (ereg & BIT(17)) printk(" OFLOW");
++			if (ereg & BIT(16)) printk(" Unex");
++			if (ereg & BIT(15)) printk(" ABRT");
++			if (ereg & BIT(14)) printk(" COMPTO");
++			if (ereg & BIT(13)) printk(" FLOW");
++			if (ereg & BIT(12)) printk(" PTLP");
++			if (ereg & BIT( 4)) printk(" DLINK");
++			printk("\n");
++*/
++			pr_debug("%s failed port%d sreg=0x%04x\n", __func__,
++				pci_domain_nr(bus), sreg);
++
++			/* make sure the status bits are reset */
++			__raw_writew(sreg, host_base + 6);
++			__raw_writel(ereg, host_base + 0x104);
++			return 1;
++		}
++	}
++	else
++		return 1;
++
++  return 0;
++}
++
+ static int cns3xxx_pci_read_config(struct pci_bus *bus, unsigned int devfn,
+ 				   int where, int size, u32 *val)
+ {
+@@ -95,6 +168,11 @@ static int cns3xxx_pci_read_config(struc
+ 
+ 	ret = pci_generic_config_read(bus, devfn, where, size, val);
+ 
++	if (check_master_abort(bus, devfn, where)) {
++		printk(KERN_ERR "pci error: %04d:%02x:%02x.%02x %02x(%d)= master_abort on read\n", pci_domain_nr(bus), bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn), where, size);
++		return PCIBIOS_DEVICE_NOT_FOUND;
++	}
++
+ 	if (ret == PCIBIOS_SUCCESSFUL && !bus->number && !devfn &&
+ 	    (where & 0xffc) == PCI_CLASS_REVISION)
+ 		/*
+@@ -257,8 +335,14 @@ static void __init cns3xxx_pcie_hw_init(
+ static int cns3xxx_pcie_abort_handler(unsigned long addr, unsigned int fsr,
+ 				      struct pt_regs *regs)
+ {
++#if 0
++/* R14_ABORT = PC+4 for XSCALE but not ARM11MPCORE
++ * ignore imprecise aborts and use PCI-compatible Status register to
++ * determine errors instead
++ */
+ 	if (fsr & (1 << 10))
+ 		regs->ARM_pc += 4;
++#endif
+ 	return 0;
+ }
+ 
diff --git a/target/linux/cns3xxx/patches-4.19/065-pcie_skip_inactive.patch b/target/linux/cns3xxx/patches-4.19/065-pcie_skip_inactive.patch
new file mode 100644
index 0000000000..b8b5f273a1
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/065-pcie_skip_inactive.patch
@@ -0,0 +1,11 @@
+--- a/arch/arm/mach-cns3xxx/pcie.c
++++ b/arch/arm/mach-cns3xxx/pcie.c
+@@ -366,6 +366,8 @@ void __init cns3xxx_pcie_init_late(void)
+ 
+ 	for (i = 0; i < ARRAY_SIZE(cns3xxx_pcie); i++) {
+ 		cns3xxx_pcie_check_link(&cns3xxx_pcie[i]);
++		if (!cns3xxx_pcie[i].linked)
++			continue;
+ 		cns3xxx_pcie_hw_init(&cns3xxx_pcie[i]);
+ 		private_data = &cns3xxx_pcie[i];
+ 		pci_common_init(&hw_pci);
diff --git a/target/linux/cns3xxx/patches-4.19/070-i2c_support.patch b/target/linux/cns3xxx/patches-4.19/070-i2c_support.patch
new file mode 100644
index 0000000000..e151bf90f0
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/070-i2c_support.patch
@@ -0,0 +1,31 @@
+--- a/drivers/i2c/busses/Kconfig
++++ b/drivers/i2c/busses/Kconfig
+@@ -458,6 +458,18 @@ config I2C_CBUS_GPIO
+ 	  This driver can also be built as a module.  If so, the module
+ 	  will be called i2c-cbus-gpio.
+ 
++config I2C_CNS3XXX
++	tristate "Cavium CNS3xxx I2C driver"
++	depends on ARCH_CNS3XXX
++	help
++	  Support for Cavium CNS3xxx I2C controller driver.
++
++	  This driver can also be built as a module.  If so, the module
++	  will be called i2c-cns3xxx.
++
++	  Please note that this driver might be needed to bring up other
++	  devices such as Cavium CNS3xxx Ethernet.
++
+ config I2C_CPM
+ 	tristate "Freescale CPM1 or CPM2 (MPC8xx/826x)"
+ 	depends on CPM1 || CPM2
+--- a/drivers/i2c/busses/Makefile
++++ b/drivers/i2c/busses/Makefile
+@@ -131,6 +131,7 @@ obj-$(CONFIG_I2C_VIPERBOARD)	+= i2c-vipe
+ obj-$(CONFIG_I2C_ACORN)		+= i2c-acorn.o
+ obj-$(CONFIG_I2C_BCM_KONA)	+= i2c-bcm-kona.o
+ obj-$(CONFIG_I2C_BRCMSTB)	+= i2c-brcmstb.o
++obj-$(CONFIG_I2C_CNS3XXX)	+= i2c-cns3xxx.o
+ obj-$(CONFIG_I2C_CROS_EC_TUNNEL)	+= i2c-cros-ec-tunnel.o
+ obj-$(CONFIG_I2C_ELEKTOR)	+= i2c-elektor.o
+ obj-$(CONFIG_I2C_MLXCPLD)	+= i2c-mlxcpld.o
diff --git a/target/linux/cns3xxx/patches-4.19/075-spi_support.patch b/target/linux/cns3xxx/patches-4.19/075-spi_support.patch
new file mode 100644
index 0000000000..e4bd129340
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/075-spi_support.patch
@@ -0,0 +1,51 @@
+--- a/drivers/spi/Kconfig
++++ b/drivers/spi/Kconfig
+@@ -181,6 +181,13 @@ config SPI_CLPS711X
+ 	  This enables dedicated general purpose SPI/Microwire1-compatible
+ 	  master mode interface (SSI1) for CLPS711X-based CPUs.
+ 
++config SPI_CNS3XXX
++	tristate "CNS3XXX SPI controller"
++	depends on ARCH_CNS3XXX && SPI_MASTER
++	select SPI_BITBANG
++	help
++	  This enables using the CNS3XXX SPI controller in master mode.
++
+ config SPI_COLDFIRE_QSPI
+ 	tristate "Freescale Coldfire QSPI controller"
+ 	depends on (M520x || M523x || M5249 || M525x || M527x || M528x || M532x)
+--- a/drivers/spi/Makefile
++++ b/drivers/spi/Makefile
+@@ -28,6 +28,7 @@ obj-$(CONFIG_SPI_BITBANG)		+= spi-bitban
+ obj-$(CONFIG_SPI_BUTTERFLY)		+= spi-butterfly.o
+ obj-$(CONFIG_SPI_CADENCE)		+= spi-cadence.o
+ obj-$(CONFIG_SPI_CLPS711X)		+= spi-clps711x.o
++obj-$(CONFIG_SPI_CNS3XXX)		+= spi-cns3xxx.o
+ obj-$(CONFIG_SPI_COLDFIRE_QSPI)		+= spi-coldfire-qspi.o
+ obj-$(CONFIG_SPI_DAVINCI)		+= spi-davinci.o
+ obj-$(CONFIG_SPI_DLN2)			+= spi-dln2.o
+--- a/include/linux/spi/spi.h
++++ b/include/linux/spi/spi.h
+@@ -795,6 +795,10 @@ struct spi_transfer {
+ 	u32		speed_hz;
+ 
+ 	struct list_head transfer_list;
++
++#ifdef CONFIG_ARCH_CNS3XXX
++	unsigned	last_in_message_list;
++#endif
+ };
+ 
+ /**
+--- a/drivers/spi/spi.c
++++ b/drivers/spi/spi.c
+@@ -1018,6 +1018,9 @@ static int spi_transfer_one_message(stru
+ 	list_for_each_entry(xfer, &msg->transfers, transfer_list) {
+ 		trace_spi_transfer_start(msg, xfer);
+ 
++		xfer->last_in_message_list =
++			list_is_last(&xfer->transfer_list, &msg->transfers);
++
+ 		spi_statistics_add_transfer_stats(statm, xfer, ctlr);
+ 		spi_statistics_add_transfer_stats(stats, xfer, ctlr);
+ 
diff --git a/target/linux/cns3xxx/patches-4.19/080-sata_support.patch b/target/linux/cns3xxx/patches-4.19/080-sata_support.patch
new file mode 100644
index 0000000000..20871916fb
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/080-sata_support.patch
@@ -0,0 +1,26 @@
+--- a/drivers/ata/ahci_platform.c
++++ b/drivers/ata/ahci_platform.c
+@@ -37,12 +37,23 @@ static struct scsi_host_template ahci_pl
+ 	AHCI_SHT(DRV_NAME),
+ };
+ 
++static const struct ata_port_info cns3xxx_port_info = {
++	.flags		= AHCI_FLAG_COMMON,
++	.pio_mask	= ATA_PIO4,
++	.udma_mask	= ATA_UDMA6,
++	.port_ops	= &ahci_pmp_retry_srst_ops,
++};
++
+ static int ahci_probe(struct platform_device *pdev)
+ {
+ 	struct device *dev = &pdev->dev;
+ 	struct ahci_host_priv *hpriv;
++	const struct ata_port_info *info = &ahci_port_info;
+ 	int rc;
+ 
++	if (IS_ENABLED(CONFIG_ARCH_CNS3XXX))
++		info = &cns3xxx_port_info;
++
+ 	hpriv = ahci_platform_get_resources(pdev,
+ 					    AHCI_PLATFORM_GET_RESETS);
+ 	if (IS_ERR(hpriv))
diff --git a/target/linux/cns3xxx/patches-4.19/090-timers.patch b/target/linux/cns3xxx/patches-4.19/090-timers.patch
new file mode 100644
index 0000000000..b3810f8c9b
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/090-timers.patch
@@ -0,0 +1,105 @@
+--- a/arch/arm/mach-cns3xxx/core.c
++++ b/arch/arm/mach-cns3xxx/core.c
+@@ -138,6 +138,7 @@ static int cns3xxx_set_oneshot(struct cl
+ 
+ 	/* period set, and timer enabled in 'next_event' hook */
+ 	ctrl |= (1 << 2) | (1 << 9);
++	writel(0, cns3xxx_tmr1 + TIMER1_AUTO_RELOAD_OFFSET);
+ 	writel(ctrl, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
+ 	return 0;
+ }
+@@ -148,7 +149,7 @@ static int cns3xxx_set_periodic(struct c
+ 	int pclk = cns3xxx_cpu_clock() / 8;
+ 	int reload;
+ 
+-	reload = pclk * 20 / (3 * HZ) * 0x25000;
++	reload = pclk * 1000000 / HZ;
+ 	writel(reload, cns3xxx_tmr1 + TIMER1_AUTO_RELOAD_OFFSET);
+ 	ctrl |= (1 << 0) | (1 << 2) | (1 << 9);
+ 	writel(ctrl, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
+@@ -175,8 +176,8 @@ static struct clock_event_device cns3xxx
+ 	.set_state_oneshot	= cns3xxx_set_oneshot,
+ 	.tick_resume		= cns3xxx_shutdown,
+ 	.set_next_event		= cns3xxx_timer_set_next_event,
+-	.rating			= 350,
+-	.cpumask		= cpu_all_mask,
++	.rating			= 300,
++	.cpumask		= cpu_possible_mask,
+ };
+ 
+ static void __init cns3xxx_clockevents_init(unsigned int timer_irq)
+@@ -220,6 +221,32 @@ static void __init cns3xxx_init_twd(void
+ 	twd_local_timer_register(&cns3xx_twd_local_timer);
+ }
+ 
++static u64 cns3xxx_get_cycles(struct clocksource *cs)
++{
++  u64 val;
++
++  val = readl(cns3xxx_tmr1 + TIMER_FREERUN_CONTROL_OFFSET);
++  val &= 0xffff;
++
++  return ((val << 32) | readl(cns3xxx_tmr1 + TIMER_FREERUN_OFFSET));
++}
++
++static struct clocksource clocksource_cns3xxx = {
++	.name = "freerun",
++	.rating = 200,
++	.read = cns3xxx_get_cycles,
++	.mask = CLOCKSOURCE_MASK(48),
++	.flags  = CLOCK_SOURCE_IS_CONTINUOUS,
++};
++
++static void __init cns3xxx_clocksource_init(void)
++{
++	/* Reset the FreeRunning counter */
++	writel((1 << 16), cns3xxx_tmr1 + TIMER_FREERUN_CONTROL_OFFSET);
++
++	clocksource_register_khz(&clocksource_cns3xxx, 100);
++}
++
+ /*
+  * Set up the clock source and clock events devices
+  */
+@@ -237,13 +264,12 @@ static void __init __cns3xxx_timer_init(
+ 	/* stop free running timer3 */
+ 	writel(0, cns3xxx_tmr1 + TIMER_FREERUN_CONTROL_OFFSET);
+ 
+-	/* timer1 */
+-	writel(0x5C800, cns3xxx_tmr1 + TIMER1_COUNTER_OFFSET);
+-	writel(0x5C800, cns3xxx_tmr1 + TIMER1_AUTO_RELOAD_OFFSET);
+-
+ 	writel(0, cns3xxx_tmr1 + TIMER1_MATCH_V1_OFFSET);
+ 	writel(0, cns3xxx_tmr1 + TIMER1_MATCH_V2_OFFSET);
+ 
++	val = (cns3xxx_cpu_clock() >> 3) * 1000000 / HZ;
++	writel(val, cns3xxx_tmr1 + TIMER1_COUNTER_OFFSET);
++
+ 	/* mask irq, non-mask timer1 overflow */
+ 	irq_mask = readl(cns3xxx_tmr1 + TIMER1_2_INTERRUPT_MASK_OFFSET);
+ 	irq_mask &= ~(1 << 2);
+@@ -255,23 +281,9 @@ static void __init __cns3xxx_timer_init(
+ 	val |= (1 << 9);
+ 	writel(val, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
+ 
+-	/* timer2 */
+-	writel(0, cns3xxx_tmr1 + TIMER2_MATCH_V1_OFFSET);
+-	writel(0, cns3xxx_tmr1 + TIMER2_MATCH_V2_OFFSET);
+-
+-	/* mask irq */
+-	irq_mask = readl(cns3xxx_tmr1 + TIMER1_2_INTERRUPT_MASK_OFFSET);
+-	irq_mask |= ((1 << 3) | (1 << 4) | (1 << 5));
+-	writel(irq_mask, cns3xxx_tmr1 + TIMER1_2_INTERRUPT_MASK_OFFSET);
+-
+-	/* down counter */
+-	val = readl(cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
+-	val |= (1 << 10);
+-	writel(val, cns3xxx_tmr1 + TIMER1_2_CONTROL_OFFSET);
+-
+-	/* Make irqs happen for the system timer */
+ 	setup_irq(timer_irq, &cns3xxx_timer_irq);
+ 
++	cns3xxx_clocksource_init();
+ 	cns3xxx_clockevents_init(timer_irq);
+ 	cns3xxx_init_twd();
+ }
diff --git a/target/linux/cns3xxx/patches-4.19/093-add-virt-pci-io-mapping.patch b/target/linux/cns3xxx/patches-4.19/093-add-virt-pci-io-mapping.patch
new file mode 100644
index 0000000000..0fa7ed483f
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/093-add-virt-pci-io-mapping.patch
@@ -0,0 +1,41 @@
+--- a/arch/arm/mach-cns3xxx/cns3xxx.h
++++ b/arch/arm/mach-cns3xxx/cns3xxx.h
+@@ -162,11 +162,13 @@
+ #define CNS3XXX_L2C_BASE			0x92000000	/* L2 Cache Control */
+ 
+ #define CNS3XXX_PCIE0_MEM_BASE			0xA0000000	/* PCIe Port 0 IO/Memory Space */
++#define CNS3XXX_PCIE0_MEM_BASE_VIRT		0xE0000000
+ 
+ #define CNS3XXX_PCIE0_HOST_BASE			0xAB000000	/* PCIe Port 0 RC Base */
+ #define CNS3XXX_PCIE0_HOST_BASE_VIRT		0xE1000000
+ 
+ #define CNS3XXX_PCIE0_IO_BASE			0xAC000000	/* PCIe Port 0 */
++#define CNS3XXX_PCIE0_IO_BASE_VIRT		0xE2000000
+ 
+ #define CNS3XXX_PCIE0_CFG0_BASE			0xAD000000	/* PCIe Port 0 CFG Type 0 */
+ #define CNS3XXX_PCIE0_CFG0_BASE_VIRT		0xE3000000
+@@ -175,13 +177,16 @@
+ #define CNS3XXX_PCIE0_CFG1_BASE_VIRT		0xE4000000
+ 
+ #define CNS3XXX_PCIE0_MSG_BASE			0xAF000000	/* PCIe Port 0 Message Space */
++#define CNS3XXX_PCIE0_MSG_BASE_VIRT		0xE5000000
+ 
+ #define CNS3XXX_PCIE1_MEM_BASE			0xB0000000	/* PCIe Port 1 IO/Memory Space */
++#define CNS3XXX_PCIE1_MEM_BASE_VIRT		0xE8000000
+ 
+ #define CNS3XXX_PCIE1_HOST_BASE			0xBB000000	/* PCIe Port 1 RC Base */
+ #define CNS3XXX_PCIE1_HOST_BASE_VIRT		0xE9000000
+ 
+ #define CNS3XXX_PCIE1_IO_BASE			0xBC000000	/* PCIe Port 1 */
++#define CNS3XXX_PCIE1_IO_BASE_VIRT		0xEA000000
+ 
+ #define CNS3XXX_PCIE1_CFG0_BASE			0xBD000000	/* PCIe Port 1 CFG Type 0 */
+ #define CNS3XXX_PCIE1_CFG0_BASE_VIRT		0xEB000000
+@@ -190,6 +195,7 @@
+ #define CNS3XXX_PCIE1_CFG1_BASE_VIRT		0xEC000000
+ 
+ #define CNS3XXX_PCIE1_MSG_BASE			0xBF000000	/* PCIe Port 1 Message Space */
++#define CNS3XXX_PCIE1_MSG_BASE_VIRT		0xED000000
+ 
+ /*
+  * Testchip peripheral and fpga gic regions
diff --git a/target/linux/cns3xxx/patches-4.19/095-gpio_support.patch b/target/linux/cns3xxx/patches-4.19/095-gpio_support.patch
new file mode 100644
index 0000000000..8345f2f144
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/095-gpio_support.patch
@@ -0,0 +1,67 @@
+--- a/arch/arm/mach-cns3xxx/cns3420vb.c
++++ b/arch/arm/mach-cns3xxx/cns3420vb.c
+@@ -223,6 +223,10 @@ static void __init cns3420_init(void)
+ 
+ 	cns3xxx_ahci_init();
+ 	cns3xxx_sdhci_init();
++	cns3xxx_gpio_init( 0, 32, CNS3XXX_GPIOA_BASE_VIRT, IRQ_CNS3XXX_GPIOA,
++		NR_IRQS_CNS3XXX);
++	cns3xxx_gpio_init(32, 32, CNS3XXX_GPIOB_BASE_VIRT, IRQ_CNS3XXX_GPIOB,
++		NR_IRQS_CNS3XXX + 32);
+ 
+ 	pm_power_off = cns3xxx_power_off;
+ }
+--- a/arch/arm/mach-cns3xxx/Kconfig
++++ b/arch/arm/mach-cns3xxx/Kconfig
+@@ -3,6 +3,8 @@ menuconfig ARCH_CNS3XXX
+ 	bool "Cavium Networks CNS3XXX family"
+ 	depends on ARCH_MULTI_V6
+ 	select ARM_GIC
++	select ARCH_REQUIRE_GPIOLIB
++	select GENERIC_IRQ_CHIP
+ 	select HAVE_ARM_SCU if SMP
+ 	select HAVE_ARM_TWD
+ 	select HAVE_SMP
+--- a/arch/arm/mach-cns3xxx/Makefile
++++ b/arch/arm/mach-cns3xxx/Makefile
+@@ -2,7 +2,7 @@
+ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include
+ 
+ obj-$(CONFIG_ARCH_CNS3XXX)		+= cns3xxx.o
+-cns3xxx-y				+= core.o pm.o
++cns3xxx-y				+= core.o pm.o gpio.o
+ cns3xxx-$(CONFIG_ATAGS)			+= devices.o
+ cns3xxx-$(CONFIG_PCI)			+= pcie.o
+ cns3xxx-$(CONFIG_MACH_CNS3420VB)	+= cns3420vb.o
+--- a/arch/arm/mach-cns3xxx/cns3xxx.h
++++ b/arch/arm/mach-cns3xxx/cns3xxx.h
+@@ -68,8 +68,10 @@
+ #define SMC_PCELL_ID_3_OFFSET			0xFFC
+ 
+ #define CNS3XXX_GPIOA_BASE			0x74000000	/* GPIO port A */
++#define CNS3XXX_GPIOA_BASE_VIRT			0xFB006000
+ 
+ #define CNS3XXX_GPIOB_BASE			0x74800000	/* GPIO port B */
++#define CNS3XXX_GPIOB_BASE_VIRT			0xFB007000
+ 
+ #define CNS3XXX_RTC_BASE			0x75000000	/* Real Time Clock */
+ 
+--- a/arch/arm/mach-cns3xxx/core.c
++++ b/arch/arm/mach-cns3xxx/core.c
+@@ -50,6 +50,16 @@ static struct map_desc cns3xxx_io_desc[]
+ 		.pfn		= __phys_to_pfn(CNS3XXX_PM_BASE),
+ 		.length		= SZ_4K,
+ 		.type		= MT_DEVICE,
++	}, {
++		.virtual	= CNS3XXX_GPIOA_BASE_VIRT,
++		.pfn		= __phys_to_pfn(CNS3XXX_GPIOA_BASE),
++		.length		= SZ_4K,
++		.type		= MT_DEVICE,
++	}, {
++		.virtual	= CNS3XXX_GPIOB_BASE_VIRT,
++		.pfn		= __phys_to_pfn(CNS3XXX_GPIOB_BASE),
++		.length		= SZ_4K,
++		.type		= MT_DEVICE,
+ #ifdef CONFIG_PCI
+ 	}, {
+ 		.virtual	= CNS3XXX_PCIE0_HOST_BASE_VIRT,
diff --git a/target/linux/cns3xxx/patches-4.19/097-l2x0_cmdline_disable.patch b/target/linux/cns3xxx/patches-4.19/097-l2x0_cmdline_disable.patch
new file mode 100644
index 0000000000..b4720b11de
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/097-l2x0_cmdline_disable.patch
@@ -0,0 +1,69 @@
+--- a/arch/arm/mach-cns3xxx/core.c
++++ b/arch/arm/mach-cns3xxx/core.c
+@@ -307,13 +307,26 @@ void __init cns3xxx_timer_init(void)
+ 
+ #ifdef CONFIG_CACHE_L2X0
+ 
+-void __init cns3xxx_l2x0_init(void)
++static int cns3xxx_l2x0_enable = 1;
++
++static int __init cns3xxx_l2x0_disable(char *s)
++{
++	cns3xxx_l2x0_enable = 0;
++	return 1;
++}
++__setup("nol2x0", cns3xxx_l2x0_disable);
++
++static int __init cns3xxx_l2x0_init(void)
+ {
+-	void __iomem *base = ioremap(CNS3XXX_L2C_BASE, SZ_4K);
++	void __iomem *base;
+ 	u32 val;
+ 
++	if (!cns3xxx_l2x0_enable)
++		return 0;
++
++	base = ioremap(CNS3XXX_L2C_BASE, SZ_4K);
+ 	if (WARN_ON(!base))
+-		return;
++		return 0;
+ 
+ 	/*
+ 	 * Tag RAM Control register
+@@ -343,7 +356,10 @@ void __init cns3xxx_l2x0_init(void)
+ 
+ 	/* 32 KiB, 8-way, parity disable */
+ 	l2x0_init(base, 0x00500000, 0xfe0f0fff);
++
++	return 0;
+ }
++arch_initcall(cns3xxx_l2x0_init);
+ 
+ #endif /* CONFIG_CACHE_L2X0 */
+ 
+--- a/arch/arm/mach-cns3xxx/cns3420vb.c
++++ b/arch/arm/mach-cns3xxx/cns3420vb.c
+@@ -217,8 +217,6 @@ static struct platform_device *cns3420_p
+ 
+ static void __init cns3420_init(void)
+ {
+-	cns3xxx_l2x0_init();
+-
+ 	platform_add_devices(cns3420_pdevs, ARRAY_SIZE(cns3420_pdevs));
+ 
+ 	cns3xxx_ahci_init();
+--- a/arch/arm/mach-cns3xxx/core.h
++++ b/arch/arm/mach-cns3xxx/core.h
+@@ -16,12 +16,6 @@
+ extern struct smp_operations cns3xxx_smp_ops;
+ extern void cns3xxx_timer_init(void);
+ 
+-#ifdef CONFIG_CACHE_L2X0
+-void __init cns3xxx_l2x0_init(void);
+-#else
+-static inline void cns3xxx_l2x0_init(void) {}
+-#endif /* CONFIG_CACHE_L2X0 */
+-
+ #ifdef CONFIG_PCI
+ extern void __init cns3xxx_pcie_init_late(void);
+ #else
diff --git a/target/linux/cns3xxx/patches-4.19/100-laguna_support.patch b/target/linux/cns3xxx/patches-4.19/100-laguna_support.patch
new file mode 100644
index 0000000000..c0160d8f12
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/100-laguna_support.patch
@@ -0,0 +1,46 @@
+--- a/arch/arm/mach-cns3xxx/Kconfig
++++ b/arch/arm/mach-cns3xxx/Kconfig
+@@ -23,4 +23,12 @@ config MACH_CNS3420VB
+ 	  This is a platform with an on-board ARM11 MPCore and has support
+ 	  for USB, USB-OTG, MMC/SD/SDIO, SATA, PCI-E, etc.
+ 
++config MACH_GW2388
++	bool "Support for Gateworks Laguna Platform"
++	help
++	  Include support for the Gateworks Laguna Platform
++
++	  This is a platform with an on-board ARM11 MPCore and has support
++	  for USB, USB-OTG, MMC/SD/SDIO, SATA, PCI-E, I2C, GIG, etc.
++
+ endif
+--- a/arch/arm/mach-cns3xxx/Makefile
++++ b/arch/arm/mach-cns3xxx/Makefile
+@@ -8,3 +8,5 @@ cns3xxx-$(CONFIG_PCI)			+= pcie.o
+ cns3xxx-$(CONFIG_MACH_CNS3420VB)	+= cns3420vb.o
+ cns3xxx-$(CONFIG_SMP)			+= platsmp.o headsmp.o cns3xxx_fiq.o
+ cns3xxx-$(CONFIG_HOTPLUG_CPU)		+= hotplug.o
++cns3xxx-$(CONFIG_MACH_GW2388)		+= laguna.o
++
+--- a/arch/arm/mach-cns3xxx/devices.c
++++ b/arch/arm/mach-cns3xxx/devices.c
+@@ -16,6 +16,7 @@
+ #include <linux/compiler.h>
+ #include <linux/dma-mapping.h>
+ #include <linux/platform_device.h>
++#include <asm/mach-types.h>
+ #include "cns3xxx.h"
+ #include "pm.h"
+ #include "core.h"
+@@ -101,7 +102,11 @@ void __init cns3xxx_sdhci_init(void)
+ 	u32 gpioa_pins = __raw_readl(gpioa);
+ 
+ 	/* MMC/SD pins share with GPIOA */
+-	gpioa_pins |= 0x1fff0004;
++	if (machine_is_gw2388()) {
++		gpioa_pins |= 0x1fff0000;
++	} else {
++		gpioa_pins |= 0x1fff0004;
++	}
+ 	__raw_writel(gpioa_pins, gpioa);
+ 
+ 	cns3xxx_pwr_clk_en(CNS3XXX_PWR_CLK_EN(SDIO));
diff --git a/target/linux/cns3xxx/patches-4.19/101-laguna_sdhci_card_detect.patch b/target/linux/cns3xxx/patches-4.19/101-laguna_sdhci_card_detect.patch
new file mode 100644
index 0000000000..72648a5f9f
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/101-laguna_sdhci_card_detect.patch
@@ -0,0 +1,14 @@
+--- a/drivers/mmc/host/sdhci-cns3xxx.c
++++ b/drivers/mmc/host/sdhci-cns3xxx.c
+@@ -88,9 +88,9 @@ static const struct sdhci_pltfm_data sdh
+ 	.ops = &sdhci_cns3xxx_ops,
+ 	.quirks = SDHCI_QUIRK_BROKEN_DMA |
+ 		  SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
+-		  SDHCI_QUIRK_INVERTED_WRITE_PROTECT |
+ 		  SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
+-		  SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
++		  SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
++		  SDHCI_QUIRK_BROKEN_CARD_DETECTION,
+ };
+ 
+ static int sdhci_cns3xxx_probe(struct platform_device *pdev)
diff --git a/target/linux/cns3xxx/patches-4.19/110-pci_isolated_interrupts.patch b/target/linux/cns3xxx/patches-4.19/110-pci_isolated_interrupts.patch
new file mode 100644
index 0000000000..800be813b8
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/110-pci_isolated_interrupts.patch
@@ -0,0 +1,95 @@
+--- a/arch/arm/mach-cns3xxx/pcie.c
++++ b/arch/arm/mach-cns3xxx/pcie.c
+@@ -18,6 +18,7 @@
+ #include <linux/io.h>
+ #include <linux/ioport.h>
+ #include <linux/interrupt.h>
++#include <linux/irq.h>
+ #include <linux/ptrace.h>
+ #include <asm/mach/map.h>
+ #include "cns3xxx.h"
+@@ -27,7 +28,7 @@ struct cns3xxx_pcie {
+ 	void __iomem *host_regs; /* PCI config registers for host bridge */
+ 	void __iomem *cfg0_regs; /* PCI Type 0 config registers */
+ 	void __iomem *cfg1_regs; /* PCI Type 1 config registers */
+-	unsigned int irqs[2];
++	unsigned int irqs[5];
+ 	struct resource res_io;
+ 	struct resource res_mem;
+ 	int port;
+@@ -95,7 +96,7 @@ static inline int check_master_abort(str
+ 		void __iomem *host_base;
+ 		u32 sreg, ereg;
+ 
+-		host_base = (void __iomem *) cnspci->cfg_bases[CNS3XXX_HOST_TYPE].virtual;
++		host_base = (void __iomem *) cnspci->host_regs;
+ 		sreg = __raw_readw(host_base + 0x6) & 0xF900;
+ 		ereg = __raw_readl(host_base + 0x104); // Uncorrectable Error Status Reg
+ 
+@@ -209,7 +210,7 @@ static struct pci_ops cns3xxx_pcie_ops =
+ static int cns3xxx_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+ {
+ 	struct cns3xxx_pcie *cnspci = pdev_to_cnspci(dev);
+-	int irq = cnspci->irqs[!!dev->bus->number];
++	int irq = cnspci->irqs[!!dev->bus->number + pin - 1];
+ 
+ 	pr_info("PCIe map irq: %04d:%02x:%02x.%02x slot %d, pin %d, irq: %d\n",
+ 		pci_domain_nr(dev->bus), dev->bus->number, PCI_SLOT(dev->devfn),
+@@ -235,7 +236,13 @@ static struct cns3xxx_pcie cns3xxx_pcie[
+ 			.end = CNS3XXX_PCIE0_HOST_BASE - 1, /* 176 MiB */
+ 			.flags = IORESOURCE_MEM,
+ 		},
+-		.irqs = { IRQ_CNS3XXX_PCIE0_RC, IRQ_CNS3XXX_PCIE0_DEVICE, },
++		.irqs = {
++			IRQ_CNS3XXX_PCIE0_RC,
++			IRQ_CNS3XXX_PCIE0_DEVICE,
++			IRQ_CNS3XXX_PCIE0_DEVICE,
++			IRQ_CNS3XXX_PCIE0_DEVICE,
++			IRQ_CNS3XXX_PCIE0_DEVICE,
++		},
+ 		.port = 0,
+ 	},
+ 	[1] = {
+@@ -254,7 +261,13 @@ static struct cns3xxx_pcie cns3xxx_pcie[
+ 			.end = CNS3XXX_PCIE1_HOST_BASE - 1, /* 176 MiB */
+ 			.flags = IORESOURCE_MEM,
+ 		},
+-		.irqs = { IRQ_CNS3XXX_PCIE1_RC, IRQ_CNS3XXX_PCIE1_DEVICE, },
++		.irqs = {
++			IRQ_CNS3XXX_PCIE1_RC,
++			IRQ_CNS3XXX_PCIE1_DEVICE,
++			IRQ_CNS3XXX_PCIE1_DEVICE,
++			IRQ_CNS3XXX_PCIE1_DEVICE,
++			IRQ_CNS3XXX_PCIE1_DEVICE,
++		},
+ 		.port = 1,
+ 	},
+ };
+@@ -346,6 +359,14 @@ static int cns3xxx_pcie_abort_handler(un
+ 	return 0;
+ }
+ 
++void __init cns3xxx_pcie_set_irqs(int bus, int *irqs)
++{
++	int i;
++
++	for (i = 0; i < 4; i++)
++		cns3xxx_pcie[bus].irqs[i + 1] = irqs[i];
++}
++
+ void __init cns3xxx_pcie_init_late(void)
+ {
+ 	int i;
+--- a/arch/arm/mach-cns3xxx/core.h
++++ b/arch/arm/mach-cns3xxx/core.h
+@@ -18,8 +18,10 @@ extern void cns3xxx_timer_init(void);
+ 
+ #ifdef CONFIG_PCI
+ extern void __init cns3xxx_pcie_init_late(void);
++extern void __init cns3xxx_pcie_set_irqs(int bus, int *irqs);
+ #else
+ static inline void __init cns3xxx_pcie_init_late(void) {}
++static inline void cns3xxx_pcie_set_irqs(int bus, int *irqs) {}
+ #endif
+ 
+ void __init cns3xxx_map_io(void);
diff --git a/target/linux/cns3xxx/patches-4.19/130-Extend-PCIE_BUS_PEER2PEER-to-set-MRSS-128-to-fix-CNS3xxx-BM-DMA..patch b/target/linux/cns3xxx/patches-4.19/130-Extend-PCIE_BUS_PEER2PEER-to-set-MRSS-128-to-fix-CNS3xxx-BM-DMA..patch
new file mode 100644
index 0000000000..4b4f0e4f0a
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/130-Extend-PCIE_BUS_PEER2PEER-to-set-MRSS-128-to-fix-CNS3xxx-BM-DMA..patch
@@ -0,0 +1,23 @@
+--- a/drivers/pci/probe.c
++++ b/drivers/pci/probe.c
+@@ -2619,7 +2619,8 @@ static void pcie_write_mrrs(struct pci_d
+ 	 * In the "safe" case, do not configure the MRRS.  There appear to be
+ 	 * issues with setting MRRS to 0 on a number of devices.
+ 	 */
+-	if (pcie_bus_config != PCIE_BUS_PERFORMANCE)
++	if (pcie_bus_config != PCIE_BUS_PERFORMANCE &&
++	    pcie_bus_config != PCIE_BUS_PEER2PEER)
+ 		return;
+ 
+ 	/*
+--- a/include/linux/pci.h
++++ b/include/linux/pci.h
+@@ -866,7 +866,7 @@ enum pcie_bus_config_types {
+ 	PCIE_BUS_DEFAULT,	/* Ensure MPS matches upstream bridge */
+ 	PCIE_BUS_SAFE,		/* Use largest MPS boot-time devices support */
+ 	PCIE_BUS_PERFORMANCE,	/* Use MPS and MRRS for best performance */
+-	PCIE_BUS_PEER2PEER,	/* Set MPS = 128 for all devices */
++	PCIE_BUS_PEER2PEER,	/* set MPS and MRSS to 128 for all devices */
+ };
+ 
+ extern enum pcie_bus_config_types pcie_bus_config;
diff --git a/target/linux/cns3xxx/patches-4.19/200-broadcom_phy_reinit.patch b/target/linux/cns3xxx/patches-4.19/200-broadcom_phy_reinit.patch
new file mode 100644
index 0000000000..b0c3299d85
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/200-broadcom_phy_reinit.patch
@@ -0,0 +1,15 @@
+--- a/drivers/net/phy/broadcom.c
++++ b/drivers/net/phy/broadcom.c
+@@ -429,7 +429,11 @@ static int bcm5481_config_aneg(struct ph
+ 	ret = genphy_config_aneg(phydev);
+ 
+ 	/* Then we can set up the delay. */
+-	bcm5481x_config(phydev);
++	//bcm5481x_config(phydev);
++
++	phy_write(phydev, 0x18, 0xf1e7);
++	phy_write(phydev, 0x1c, 0x8e00);
++	phy_write(phydev, 0x1c, 0xa41f);
+ 
+ 	if (of_property_read_bool(np, "enet-phy-lane-swap")) {
+ 		/* Lane Swap - Undocumented register...magic! */
diff --git a/target/linux/cns3xxx/patches-4.19/210-dwc2_defaults.patch b/target/linux/cns3xxx/patches-4.19/210-dwc2_defaults.patch
new file mode 100644
index 0000000000..3e00139aa0
--- /dev/null
+++ b/target/linux/cns3xxx/patches-4.19/210-dwc2_defaults.patch
@@ -0,0 +1,63 @@
+--- a/drivers/usb/dwc2/params.c
++++ b/drivers/usb/dwc2/params.c
+@@ -144,6 +144,36 @@ static void dwc2_set_stm32f7_hsotg_param
+ 	p->host_perio_tx_fifo_size = 256;
+ }
+ 
++static void dwc2_set_cns3xxx_params(struct dwc2_hsotg *hsotg)
++{
++	struct dwc2_core_params *p = &hsotg->params;
++
++	p->otg_cap			= DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;	/* non-HNP/non-SRP capable */
++	p->host_dma			= 1;
++	p->dma_desc_enable		= 0;
++	p->speed			= DWC2_SPEED_PARAM_HIGH;	/* High Speed */
++	p->enable_dynamic_fifo		= 1;
++	p->en_multiple_tx_fifo		= 1;
++	p->host_rx_fifo_size		= 658;	/* 774 DWORDs */
++	p->host_nperio_tx_fifo_size	= 128;	/* 256 DWORDs */
++	p->host_perio_tx_fifo_size	= 658;	/* 512 DWORDs */
++	p->max_transfer_size		= 65535,
++	p->max_packet_count		= 511;
++	p->host_channels		= 16;
++	p->phy_type			= DWC2_PHY_TYPE_PARAM_UTMI;	/* UTMI */
++	p->phy_utmi_width		= 16;	/* 8 bits */
++	p->phy_ulpi_ddr			= 0;	/* Single */
++	p->phy_ulpi_ext_vbus		= 0;
++	p->i2c_enable			= 0;
++	p->ulpi_fs_ls			= 0;
++	p->host_support_fs_ls_low_power	= 0;
++	p->host_ls_low_power_phy_clk	= 0;	/* 48 MHz */
++	p->ts_dline			= 0;
++	p->reload_ctl			= 0;
++	p->ahbcfg			= 0x10;
++	p->uframe_sched			= false;
++}
++
+ const struct of_device_id dwc2_of_match_table[] = {
+ 	{ .compatible = "brcm,bcm2835-usb", .data = dwc2_set_bcm_params },
+ 	{ .compatible = "hisilicon,hi6220-usb", .data = dwc2_set_his_params  },
+@@ -798,17 +828,23 @@ int dwc2_get_hwparams(struct dwc2_hsotg
+ 
+ int dwc2_init_params(struct dwc2_hsotg *hsotg)
+ {
++	/*
+ 	const struct of_device_id *match;
+ 	void (*set_params)(void *data);
++	*/
+ 
+ 	dwc2_set_default_params(hsotg);
+ 	dwc2_get_device_properties(hsotg);
+ 
++	/*
+ 	match = of_match_device(dwc2_of_match_table, hsotg->dev);
+ 	if (match && match->data) {
+ 		set_params = match->data;
+ 		set_params(hsotg);
+ 	}
++	*/
++
++	dwc2_set_cns3xxx_params(hsotg);
+ 
+ 	dwc2_check_params(hsotg);
+