diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 36c9c2f..6d95cde 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1638,6 +1638,10 @@ config TARGET_DURIAN
 Support for durian platform.
 It has 2GB Sdram, uart and pcie.

+config TARGET_PRESIDIO_ASIC
+ bool "Support Cortina Presidio ASIC Platform"
+ select ARM64
+
endchoice

config ARCH_SUPPORT_TFABOOT
@@ -1782,6 +1786,7 @@ source "board/Marvell/gplugd/Kconfig"
source "board/armadeus/apf27/Kconfig"
source "board/armltd/vexpress/Kconfig"
source "board/armltd/vexpress64/Kconfig"
+source "board/cortina/presidio-asic/Kconfig"
source "board/broadcom/bcm23550_w1d/Kconfig"
source "board/broadcom/bcm28155_ap/Kconfig"
source "board/broadcom/bcm963158/Kconfig"
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 0127a91..81db1e6 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -849,6 +849,8 @@ dtb-$(CONFIG_TARGET_VEXPRESS_CA15_TC2) += vexpress-v2p-ca15_a7.dtb

dtb-$(CONFIG_TARGET_DURIAN) += phytium-durian.dtb

+dtb-$(CONFIG_TARGET_PRESIDIO_ASIC) += ca-presidio-engboard.dtb
+
targets += $(dtb-y)

# Add any required device tree compiler flags here
diff --git a/arch/arm/dts/ca-presidio-engboard.dts b/arch/arm/dts/ca-presidio-engboard.dts
new file mode 100644
index 0000000..ef371b0
--- /dev/null
+++ b/arch/arm/dts/ca-presidio-engboard.dts
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020, Cortina Access Inc.
+ */
+
+/dts-v1/;
+
+/ {
+   #address-cells = <2>;
+   #size-cells = <1>;
+
+ mmc0: mmc at f4400000 {
+ compatible = "snps,dw-cortina";
+ reg = <0x0 0xf4400000 0x1000>;
+ bus-width = <4>;
+ io_ds = <0x77>;
+ fifo-mode;
+ sd_dll_ctrl = <0xf43200e8>;
+ io_drv_ctrl = <0xf432004c>;
+ };
+
+ gpio0: gpio-controller at 0xf4329280  {
+ compatible = "cortina,ca-gpio";
+ reg = <0x0 0xf4329280 0x24>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ status = "okay";
+ };
+ gpio1: gpio-controller at 0xf43292a4  {
+ compatible = "cortina,ca-gpio";
+ reg = <0x0 0xf43292a4 0x24>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ status = "disabled";
+ };
+
+ watchdog: watchdog at 0xf432901c {
+ compatible = "cortina,ca-wdt";
+ reg = <0x0 0xf432901c 0x34>,
+      <0x0 0xf4320020 0x04>;
+ status = "okay";
+ };
+
+ uart0: serial at 0xf4329148  {
+ u-boot,dm-pre-reloc;
+ compatible = "cortina,ca-uart";
+ reg = <0x0 0xf4329148 0x30>;
+ status = "okay";
+ };
+
+ i2c: i2c at f4329120 {
+ compatible = "cortina,ca-i2c";
+ reg = <0x0 0xf4329120 0x28>;
+ clock-frequency = <400000>;
+ };
+
+ sflash: sflash-controller at f4324000 {
+ #address-cells = <2>;
+ #size-cells = <1>;
+ compatible = "cortina,ca-sflash";
+ reg = <0x0 0xf4324000 0x50>;
+ reg-names = "sflash-regs";
+ flash at 0 {
+ compatible = "jedec,spi-nor";
+ spi-rx-bus-width = <1>;
+ spi-max-frequency = <108000000>;
+ };

closing bracket is incorrectly indented

+ };
+};
diff --git a/board/cortina/common/armv8/ca7774_regs.h b/board/cortina/common/armv8/ca7774_regs.h
new file mode 100644
index 0000000..d997155
--- /dev/null
+++ b/board/cortina/common/armv8/ca7774_regs.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2015-2020, Cortina-Access Incorporation.
+ */
+
+#ifndef _CA7774_H_
+#define _CA7774_H_
+
+#define CA_PERIPH_BASE                  0xE0000000UL
+#define CA_PERIPH_SIZE                  0x20000000UL
+#define CA_GLOBAL_BASE                  0xf4320000
+#define CA_GLOBAL_JTAG_ID               0xf4320000
+#define CA_GLOBAL_BLOCK_RESET           0xf4320004
+#define CA_GLOBAL_BLOCK_RESET_RESET_DMA BIT(16)
+#define CA_DMA_SEC_SSP_BAUDRATE_CTRL    0xf7001b94
+#define CA_DMA_SEC_SSP_ID               0xf7001b80
+
+#endif /* _CA7774_H_ */
diff --git a/board/cortina/presidio-asic/Kconfig b/board/cortina/presidio-asic/Kconfig
new file mode 100644
index 0000000..8b3f3fd
--- /dev/null
+++ b/board/cortina/presidio-asic/Kconfig
@@ -0,0 +1,20 @@
+if TARGET_PRESIDIO_ASIC
+config BIT64
+ bool
+ default y
+
+config CA77XX
+ bool
+ default y
+
+config SYS_BOARD
+ default "presidio-asic"
+
+config SYS_VENDOR
+ default "cortina"
+
+config SYS_CONFIG_NAME
+ default "presidio_asic"
+
+source "board/cortina/common/Kconfig"
+endif
diff --git a/board/cortina/presidio-asic/MAINTAINERS b/board/cortina/presidio-asic/MAINTAINERS
new file mode 100644
index 0000000..9db17bd
--- /dev/null
+++ b/board/cortina/presidio-asic/MAINTAINERS
@@ -0,0 +1,6 @@
+Cortina Presidio ASIC G3 Engineering BOARD
+M: Alex Nemirovsky <alex.nemirovsky at cortina-access.com<mailto:alex.nemirovsky at cortina-access.com>>
+S: Supported
+F: board/cortina/presidio-asic/
+F: include/configs/presidio_asic.h
+F: configs/cortina_presidio-asic*defconfig
diff --git a/board/cortina/presidio-asic/Makefile b/board/cortina/presidio-asic/Makefile
new file mode 100644
index 0000000..33f8e7c
--- /dev/null
+++ b/board/cortina/presidio-asic/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2020 Cortina-Access.Inc.
+#
+#
+
+obj-y := presidio.o
+obj-y += ../common/armv8/lowlevel_init.o
diff --git a/board/cortina/presidio-asic/presidio.c b/board/cortina/presidio-asic/presidio.c
new file mode 100644
index 0000000..1bebe28
--- /dev/null
+++ b/board/cortina/presidio-asic/presidio.c
@@ -0,0 +1,126 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2020 - Cortina Access Inc.
+ *
+ */
+#include <common.h>
+#include <malloc.h>
+#include <errno.h>
+#include <netdev.h>
+#include <asm/io.h>
+#include <linux/compiler.h>
+#include <configs/presidio_asic.h>
+#include <linux/psci.h>
+#include <asm/psci.h>
+#include <cpu_func.h>
+#include <asm/armv8/mmu.h>
+#include "../common/armv8/ca7774_regs.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int print_cpuinfo(void)
+{
+ printf("CPU:   Cortina Presidio G3\n");
+ return 0;
+}
+
+static struct mm_region presidio_mem_map[] = {
+ {
+ .virt = DDR_BASE,
+ .phys = DDR_BASE,
+ .size = PHYS_SDRAM_1_SIZE,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+ PTE_BLOCK_OUTER_SHARE
+ },
+ {
+ .virt = CA_PERIPH_BASE,
+ .phys = CA_PERIPH_BASE,
+ .size = CA_PERIPH_SIZE,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+ PTE_BLOCK_NON_SHARE
+ },
+ {
+ /* List terminator */
+ 0,
+ }
+};
+
+struct mm_region *mem_map = presidio_mem_map;
+
+static noinline int invoke_psci_fn_smc(u64 function_id, u64 arg0, u64 arg1,
+       u64 arg2)
+{
+ asm volatile("mov x0, %0\n"
+    "mov x1, %1\n"
+    "mov x2, %2\n"
+    "mov x3, %3\n"
+    "smc #0\n"
+    : "+r" (function_id)
+    : "r" (arg0), "r" (arg1), "r" (arg2)
+    );
+
+ return function_id;
+}
+
+int board_early_init_r(void)
+{
+ dcache_disable();
+ return 0;
+}
+
+int board_init(void)
+{
+ unsigned int reg_data, jtag_id;
+
+ /* Enable timer */
+ writel(1, CONFIG_SYS_TIMER_BASE);
+
+ /* Enable snoop in CCI400 slave port#4 */
+ writel(3, 0xF5595000);
+
+ jtag_id = readl(CA_GLOBAL_JTAG_ID);
+
+ /* If this is HGU variant then do not use
+ * the Saturn daughter card ref. clk
+ */
+ if (jtag_id == 0x1010D8F3) {
+ reg_data = readl(0xF3100064);
+ /* change multifunc. REF CLK pin to
+ * a simple GPIO pin
+ */
+ reg_data |= (1 << 1);
+ writel(reg_data, 0xf3100064);
+ }
+
+ return 0;
+}
+
+int dram_init(void)
+{
+ unsigned int ddr_size;
+
+ ddr_size = readl(0x111100c);
+ gd->ram_size = ddr_size * 0x100000;
+ return 0;
+}
+
+void reset_cpu(ulong addr)
+{
+ invoke_psci_fn_smc(PSCI_0_2_FN_SYSTEM_RESET, 0, 0, 0);
+}
+
+#ifdef CONFIG_LAST_STAGE_INIT
+int last_stage_init(void)
+{
+ u32 val;
+
+ val = readl(CA_GLOBAL_BLOCK_RESET);
+ val &= ~CA_GLOBAL_BLOCK_RESET_RESET_DMA;
+ writel(val, CA_GLOBAL_BLOCK_RESET);
+
+ /* reduce output pclk ~3.7Hz to save power consumption */
+ writel(0x000000FF, CA_DMA_SEC_SSP_BAUDRATE_CTRL);
+
+ return 0;
+}
+#endif
diff --git a/configs/cortina_presidio-asic-base_defconfig b/configs/cortina_presidio-asic-base_defconfig
new file mode 100644
index 0000000..45b911c
--- /dev/null
+++ b/configs/cortina_presidio-asic-base_defconfig
@@ -0,0 +1,45 @@
+# Cortina-Access Ltd. Presidio ASIC Board

the defconfig file must not created manually, try this:

make savedefconfig
cp defconfig configs/cortina_presidio-asic-base_defconfig

+CONFIG_CORTINA_PLATFORM=y
+CONFIG_ARM=y
+CONFIG_SYS_ARCH_TIMER=n
+CONFIG_TARGET_PRESIDIO_ASIC=y
+CONFIG_SHOW_BOOT_PROGRESS=y
+CONFIG_BOARD_EARLY_INIT_R=y
+CONFIG_ENV_OFFSET=0x400000
+CONFIG_ENV_SIZE=0x20000
+CONFIG_SYS_TEXT_BASE=0x04000000
+CONFIG_BOOTDELAY=3
+CONFIG_SYS_PROMPT="G3#"
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_CONS_INDEX=0
+CONFIG_IDENT_STRING="Presidio-SoC"
+CONFIG_BOOTP_VCI_STRING="U-boot.armv8.presidio"
+CONFIG_OF_LIBFDT=y
+
+CONFIG_MENU=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_TIMER=y
+CONFIG_CMD_SMC=y
+
+CONFIG_DM=y
+CONFIG_CORTINA_UART=y
+CONFIG_REQUIRE_SERIAL_CONSOLE=y
+CONFIG_DM_SERIAL=y
+
+CONFIG_DM_GPIO=y
+CONFIG_CORTINA_GPIO=y
+
+CONFIG_WATCHDOG=y
+CONFIG_WATCHDOG_TIMEOUT_MSECS=60000
+CONFIG_WDT=y
+CONFIG_WDT_CORTINA=y
+CONFIG_CMD_WDT=y
+
+CONFIG_OF_CONTROL=y
+CONFIG_OF_LIVE=y
+CONFIG_OF_SEPARATE=y
+CONFIG_DEFAULT_DEVICE_TREE="ca-presidio-engboard"
+
+CONFIG_MMC=n
+CONFIG_NET=n
+CONFIG_NETDEVICES=n
diff --git a/include/configs/presidio_asic.h b/include/configs/presidio_asic.h
new file mode 100644
index 0000000..d4f7888
--- /dev/null
+++ b/include/configs/presidio_asic.h
@@ -0,0 +1,123 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2020 Cortina Access Inc.
+ *
+ * Configuration for Cortina-Access Presidio board.
+ */
+
+#ifndef __PRESIDIO_ASIC_H
+#define __PRESIDIO_ASIC_H
+
+#define CONFIG_BIT64 1
+
+//#include <generated/autoconf.h>

remove dead code

+
+#define CA_REG_READ(addr)              readl((u64)addr)
+#define CA_REG_WRITE(value, addr)      writel(value, (u64)addr)

don't use custom I/O accessors

+
+#define CONFIG_CA77XX 1

new config options should be added in Kconfig

+
+#define CONFIG_REMAKE_ELF
+
+#define CONFIG_GICV2
+
+#define CONFIG_SUPPORT_RAW_INITRD
+#define CONFIG_ARMV8_MULTIENTRY
+
+/* SMP jump address in DRAM */
+#define CPU_RELEASE_ADDR 0x0740fff8
+
+#define CONFIG_SYS_INIT_SP_ADDR 0x00100000
+#define CONFIG_SYS_BOOTM_LEN 0x00c00000
+
+/* Generic Timer Definitions */
+#define COUNTER_FREQUENCY 25000000
+#define CONFIG_SYS_TIMER_RATE COUNTER_FREQUENCY
+#define CONFIG_SYS_TIMER_COUNTER 0xf4321008
+
+/* Generic Interrupt Controller Definitions */
+#define GICD_BASE 0xf7011000
+#define GICC_BASE 0xf7012000

don't put register addresses in the config file. Those should come from
device-tree anyway. The config file should only set the legacy config
options which aren't yet migrated to Kconfig. If you need that in
low-level code or so, put the defines there or create a small header file

+
+#define CONFIG_SYS_MEMTEST_SCRATCH 0x00100000
+#define CONFIG_SYS_MEMTEST_START 0x05000000
+#define CONFIG_SYS_MEMTEST_END 0x0D000000
+
+/* Size of malloc() pool */
+#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + (8 << 20))
+
+#define CONFIG_SYS_TIMER_BASE 0xf4321000
+
+/* Use external clock source */
+#define PRESIDIO_APB_CLK 125000000
+#define CORTINA_PER_IO_FREQ PRESIDIO_APB_CLK
+
+/* Cortina Serial Configuration */
+#define CORTINA_UART_CLOCK (PRESIDIO_APB_CLK)
+#define CORTINA_SERIAL_PORTS {(void *)CONFIG_SYS_SERIAL0, \
+ (void *)CONFIG_SYS_SERIAL1}
+
+#define CONFIG_BAUDRATE 115200
+#define CONFIG_SYS_SERIAL0 PER_UART0_CFG
+#define CONFIG_SYS_SERIAL1 PER_UART1_CFG
+
+/* BLOCK Reset Definitions */
+#define RESET_OTPROM BIT(29)
+#define RESET_SD BIT(28)
+#define RESET_EAXI BIT(27)
+#define RESET_FBM BIT(26)
+#define RESET_LDMA BIT(25)
+#define RESET_RCRYPTO BIT(24)
+#define RESET_SADB BIT(22)
+#define RESET_RCPU1 BIT(21)
+#define RESET_RCPU0 BIT(20)
+#define RESET_PE1 BIT(19)
+#define RESET_PE0 BIT(18)
+#define RESET_RTC BIT(17)
+#define RESET_DMA BIT(16)
+#define RESET_PER BIT(15)
+#define RESET_FLASH BIT(14)
+#define RESET_GIC400 BIT(10)
+#define RESET_SATA BIT(9)
+#define RESET_PCIE2 BIT(8)
+#define RESET_PCIE1 BIT(7)
+#define RESET_PCIE0 BIT(6)
+#define RESET_TQM BIT(5)
+#define RESET_SDRAM BIT(4)
+#define RESET_L3FE BIT(3)
+#define RESET_L2TM BIT(2)
+#define RESET_L2FE BIT(1)
+#define RESET_NI BIT(0)
+
+/* BOOTP options */
+#define CONFIG_BOOTP_BOOTFILESIZE
+
+/* Miscellaneous configurable options */
+#define DDR_BASE 0x00000000
+#define CONFIG_SYS_LOAD_ADDR (DDR_BASE + 0x10000000)
+#define CONFIG_LAST_STAGE_INIT
+
+/* Physical Memory Map */
+
+/* SDRAM Bank #1 */
+#define PHYS_SDRAM_1 DDR_BASE
+#define PHYS_SDRAM_1_SIZE 0x80000000 /* 2GB */
+#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1
+
+/* Initial environment variables */
+
