nuc: Add SHI driver for arm-based platform in chip folder.

Add npcx_evb_arm board-level driver for arm-based platform.
Add header.c: for booting from NPCX5M5G A3 Booter.
Remove lfw folder due to those functionalitie have been replaced with Booter

Modified drivers for
Patch Set 1:
1. flash.c: Implement UMA lock, tri-state and selection register lock functionalities
2. hwtimer.c: Add ITIM32 for hwtimer
3. lpc.c: Add checking for LRESET
4. system.c: Modified CODERAM_ARCH functions for NPCX5M5G A3 Booter.
5. uart.c: Add support for module 2
Patch Set 2:
6. lpc.c: Modified lpc_get_pltrst_asserted() func
Patch Set 3:
7. minimize the changes for CONFIG_CODERAM_ARCH in common layer
8. comments of Patch Set1/2
Patch Set 4:
9. Modified CONFIG_RO_MEM_OFF point to ro image and keep header as a part of ec.RO.flat.
10. Fixed RO_FRID and RW_FRID issues which caused by CONFIG_CODERAM_ARCH.
Patch Set 5:
11. Modified system.c in common folder for supporting *_STORAGE_OFF.
12. Use *_STORAGE_OFF in firmware_image.lds.S to indicate flat file layout in flash.
Patch Set 6:
13. rebase to newest version
14. system.c: Modified for the newest include/system.h
Patch Set 7:
15. Merge from version 0625

BUG=chrome-os-partner:34346
TEST=make buildall -j; test nuvoton IC specific drivers
BRANCH=none

Change-Id: Ifd7c10b81b5781ccd75bb2558dc236486976e8ed
Signed-off-by: Ian Chao <mlchao@nuvoton.com>
Reviewed-on: https://chromium-review.googlesource.com/272034
Reviewed-by: Shawn N <shawnn@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Commit-Queue: Shawn N <shawnn@chromium.org>

6 files changed, 321 insertions, 0 deletions

diff --git a/board/npcx_evb_arm/Makefile b/board/npcx_evb_arm/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/npcx_evb_arm/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/npcx_evb_arm/board.c b/board/npcx_evb_arm/board.c
new file mode 100644
index 0000000000..56eb9b5635
--- /dev/null
+++ b/board/npcx_evb_arm/board.c
@@ -0,0 +1,131 @@
+/* Copyright 2015 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+/* EC for Nuvoton M4 EB configuration */
+
+#include "adc.h"
+#include "adc_chip.h"
+#include "backlight.h"
+#include "chipset.h"
+#include "common.h"
+#include "driver/temp_sensor/tmp006.h"
+#include "extpower.h"
+#include "fan.h"
+#include "fan_chip.h"
+#include "gpio.h"
+#include "i2c.h"
+#include "keyboard_scan.h"
+#include "lid_switch.h"
+#include "peci.h"
+#include "power.h"
+#include "power_button.h"
+#include "pwm.h"
+#include "pwm_chip.h"
+#include "registers.h"
+#include "switch.h"
+#include "temp_sensor.h"
+#include "temp_sensor_chip.h"
+#include "timer.h"
+#include "thermal.h"
+#include "util.h"
+#include "shi_chip.h"
+
+#include "gpio_list.h"
+
+/******************************************************************************/
+/* ADC channels. Must be in the exactly same order as in enum adc_channel. */
+const struct adc_t adc_channels[] = {
+	[ADC_CH_0] = {"ADC0", NPCX_ADC_INPUT_CH0, ADC_MAX_VOLT,
+			ADC_READ_MAX+1, 0},
+	[ADC_CH_1] = {"ADC1", NPCX_ADC_INPUT_CH1, ADC_MAX_VOLT,
+			ADC_READ_MAX+1, 0},
+	[ADC_CH_2] = {"ADC2", NPCX_ADC_INPUT_CH2, ADC_MAX_VOLT,
+			ADC_READ_MAX+1, 0},
+};
+BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
+
+/******************************************************************************/
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
+const struct pwm_t pwm_channels[] = {
+	[PWM_CH_FAN] =	{
+			.channel = 0,
+			/*
+			 * flags can reverse the PWM output signal according to
+			 * the board design
+			 */
+			.flags = PWM_CONFIG_ACTIVE_LOW,
+			/*
+			 * freq_operation = freq_input / prescaler_divider
+			 * freq_output = freq_operation / cycle_pulses
+			 * and freq_output <= freq_mft
+			 */
+			.freq = 34,
+			/*
+			 * cycle_pulses = (cycle_pulses * freq_output) *
+			 * RPM_EDGES * RPM_SCALE * 60 / poles / rpm_min
+			 */
+			.cycle_pulses = 480,
+	},
+	[PWM_CH_KBLIGHT] = {
+			.channel = 1,
+			.flags = 0,
+			.freq = 10000,
+			.cycle_pulses = 100,
+			},
+};
+BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
+
+/******************************************************************************/
+/* Physical fans. These are logically separate from pwm_channels. */
+const struct fan_t fans[] = {
+	[FAN_CH_0] = {
+		.flags = FAN_USE_RPM_MODE,
+		.rpm_min = 1020,
+		.rpm_start = 1020,
+		.rpm_max = 8190,
+		.ch = 0,/* Use PWM/MFT to control fan */
+		.pgood_gpio = GPIO_PGOOD_FAN,
+		.enable_gpio = -1,
+	},
+};
+BUILD_ASSERT(ARRAY_SIZE(fans) == FAN_CH_COUNT);
+
+/******************************************************************************/
+/* MFT channels. These are logically separate from mft_channels. */
+const struct mft_t mft_channels[] = {
+	[MFT_CH_0] =    {
+			.module = NPCX_MFT_MODULE_1,
+			.port = NPCX_MFT_MODULE_PORT_TA,
+			.default_count = 0xFFFF,
+#ifdef NPCX_MFT_INPUT_LFCLK
+			.freq = 32768,
+#else
+			.freq = 2000000,
+#endif
+			},
+};
+BUILD_ASSERT(ARRAY_SIZE(mft_channels) == MFT_CH_COUNT);
+
+/******************************************************************************/
+/* I2C ports */
+const struct i2c_port_t i2c_ports[] = {
+	{"master", I2C_PORT_MASTER, 100,
+	 GPIO_MASTER_I2C_SCL, GPIO_MASTER_I2C_SDA},
+};
+const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
+
+/******************************************************************************/
+/* Keyboard scan setting */
+struct keyboard_scan_config keyscan_config = {
+	.output_settle_us = 40,
+	.debounce_down_us = 6 * MSEC,
+	.debounce_up_us = 30 * MSEC,
+	.scan_period_us = 1500,
+	.min_post_scan_delay_us = 1000,
+	.poll_timeout_us = SECOND,
+	.actual_key_mask = {
+		0x14, 0xff, 0xff, 0xff, 0xff, 0xf5, 0xff,
+		0xa4, 0xff, 0xf6, 0x55, 0xfa, 0xc8  /* full set */
+	},
+};
diff --git a/board/npcx_evb_arm/board.h b/board/npcx_evb_arm/board.h
new file mode 100644
index 0000000000..62856cda56
--- /dev/null
+++ b/board/npcx_evb_arm/board.h
@@ -0,0 +1,90 @@
+/* Copyright 2015 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* Configuration for Nuvoton M4 EB */
+
+#ifndef __CROS_EC_BOARD_H
+#define __CROS_EC_BOARD_H
+
+/* Support Code RAM architecture (Run code in RAM) */
+#define CONFIG_CODERAM_ARCH
+
+/* Optional modules */
+#define CONFIG_ADC
+#define CONFIG_PWM
+#define CONFIG_SHI /* Used in ARM-based platform for host interface */
+
+/* Optional features */
+#define CONFIG_SYSTEM_UNLOCKED /* Allow dangerous commands for testing */
+#define CONFIG_SPI_FLASH_SIZE          0x00800000 /* 8MB spi flash */
+#define CONFIG_SPI_FLASH_W25Q64
+#define CONFIG_KEYBOARD_BOARD_CONFIG
+#define CONFIG_KEYBOARD_PROTOCOL_MKBP /* Instead of 8042 protocol of keyboard */
+#define CONFIG_POWER_BUTTON
+#define CONFIG_VBOOT_HASH
+#define CONFIG_PWM_KBLIGHT
+#define CONFIG_BOARD_VERSION
+
+/* Optional features for test commands */
+#define CONFIG_CMD_TASKREADY
+#define CONFIG_CMD_STACKOVERFLOW
+#define CONFIG_CMD_JUMPTAGS
+#define CONFIG_CMD_FLASH
+#define CONFIG_CMD_SPI_FLASH
+#define CONFIG_CMD_SCRATCHPAD
+#define CONFIG_CMD_I2CWEDGE
+
+#define CONFIG_UART_HOST                0
+#define CONFIG_FANS                     1
+
+/* Optional feature - used by nuvoton */
+#define NPCX_PWM_INPUT_LFCLK   /* PWM use LFCLK for input clock */
+#define NPCX_MFT_INPUT_LFCLK   /* MFT use LFCLK for input clock */
+#define NPCX_I2C0_BUS2       0 /* 0:GPIOB4/B5 1:GPIOB2/B3 as I2C0 */
+#define NPCX_UART_MODULE2    0 /* 0:GPIO10/11 1:GPIO64/65 as UART */
+#define NPCX_JTAG_MODULE2    0 /* 0:GPIO21/17/16/20 1:GPIOD5/E2/D4/E5 as JTAG*/
+#define NPCX_TACH_SEL2       0 /* 0:GPIO40/A4 1:GPIO93/D3 as TACH */
+
+/* Optional for testing */
+#undef  CONFIG_PSTORE
+#undef  CONFIG_LOW_POWER_IDLE           /* Deep Sleep Support */
+
+/* Single I2C port, where the EC is the master. */
+#define I2C_PORT_MASTER         0
+#define I2C_PORT_HOST           0
+
+#ifndef __ASSEMBLER__
+
+enum adc_channel {
+	ADC_CH_0 = 0,
+	ADC_CH_1,
+	ADC_CH_2,
+	ADC_CH_COUNT
+};
+
+enum pwm_channel {
+	PWM_CH_FAN,
+	PWM_CH_KBLIGHT,
+	/* Number of PWM channels */
+	PWM_CH_COUNT
+};
+
+enum fan_channel {
+	FAN_CH_0,
+	/* Number of FAN channels */
+	FAN_CH_COUNT
+};
+
+enum mft_channel {
+	MFT_CH_0,
+	/* Number of MFT channels */
+	MFT_CH_COUNT
+};
+
+#include "gpio_signal.h"
+
+#endif /* !__ASSEMBLER__ */
+
+#endif /* __CROS_EC_BOARD_H */
diff --git a/board/npcx_evb_arm/build.mk b/board/npcx_evb_arm/build.mk
new file mode 100644
index 0000000000..ebebf140d8
--- /dev/null
+++ b/board/npcx_evb_arm/build.mk
@@ -0,0 +1,12 @@
+# -*- makefile -*-
+# Copyright 2015 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# Board specific files build
+#
+
+# the IC is Nuvoton M-Series EC
+CHIP:=npcx
+
+board-y=board.o
diff --git a/board/npcx_evb_arm/ec.tasklist b/board/npcx_evb_arm/ec.tasklist
new file mode 100644
index 0000000000..a44d142596
--- /dev/null
+++ b/board/npcx_evb_arm/ec.tasklist
@@ -0,0 +1,23 @@
+/* Copyright 2015 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/**
+ * List of enabled tasks in the priority order
+ *
+ * The first one has the lowest priority.
+ *
+ * For each task, use the macro TASK_ALWAYS(n, r, d, s) for base tasks and
+ * TASK_NOTEST(n, r, d, s) for tasks that can be excluded in test binaries,
+ * where :
+ * 'n' is the name of the task
+ * 'r' is the main routine of the task
+ * 'd' is an opaque parameter passed to the routine at startup
+ * 's' is the stack size in bytes; must be a multiple of 8
+ */
+#define CONFIG_TASK_LIST \
+	TASK_ALWAYS(HOOKS, hook_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_ALWAYS(HOSTCMD, host_command_task, NULL, TASK_STACK_SIZE) \
+	TASK_ALWAYS(CONSOLE, console_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_NOTEST(KEYSCAN, keyboard_scan_task, NULL, TASK_STACK_SIZE)
diff --git a/board/npcx_evb_arm/gpio.inc b/board/npcx_evb_arm/gpio.inc
new file mode 100644
index 0000000000..410ac90894
--- /dev/null
+++ b/board/npcx_evb_arm/gpio.inc
@@ -0,0 +1,64 @@
+/* -*- mode:c -*-
+ *
+ * Copyright 2015 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/********************** Inputs with interrupt handlers are first for efficiency **********************/
+/* TODO: Redefine debug 2 inputs */
+GPIO_INT(RECOVERY_L,       PIN(0, 0), GPIO_PULL_UP   | GPIO_INT_BOTH, switch_interrupt)       /* Recovery signal from servo */
+GPIO_INT(WP_L,             PIN(9, 3), GPIO_PULL_DOWN | GPIO_INT_BOTH, switch_interrupt)       /* Write protect input */
+/* Used for ARM based platform */
+GPIO_INT(SHI_CS_L,         PIN(5, 3), GPIO_INT_FALLING,shi_cs_event)                          /* SHI CS Ready, Low Active. */
+/* For testing keyboard commands, we need the following 4 GPIOs */
+/* TODO: Redefine 4 inputs */
+GPIO_INT(POWER_BUTTON_L,   PIN(0, 2), GPIO_PULL_UP   | GPIO_INT_BOTH, power_button_interrupt) /* Power button */
+GPIO_INT(LID_OPEN,         PIN(3, 3), GPIO_PULL_DOWN | GPIO_INT_BOTH, lid_interrupt)          /* Lid switch */
+
+/**************************** Need a empty line between GPIO_INT and GPIO ****************************/
+GPIO(ENTERING_RW,          PIN(3, 6), GPIO_OUT_LOW)                 /* Indicate when EC is entering RW code */
+GPIO(PCH_WAKE_L,           PIN(5, 0), GPIO_OUT_HIGH)                /* Wake signal output to PCH */
+/* For testing keyboard mkbp */
+GPIO(EC_INT,               PIN(7, 4),  GPIO_ODR_HIGH)               /* Interrupt pin for keyboard mkbp */
+/* Used for module testing */
+GPIO(PGOOD_FAN,            PIN(C, 7), GPIO_PULL_UP   | GPIO_INPUT)  /* Power Good for FAN test */
+
+/*
+ * I2C pins should be configured as inputs until I2C module is
+ * initialized. This will avoid driving the lines unintentionally.
+ */
+GPIO(MASTER_I2C_SCL,       PIN(B, 5), GPIO_INPUT)
+GPIO(MASTER_I2C_SDA,       PIN(B, 4), GPIO_INPUT)
+/* Used for board version command */
+GPIO(BOARD_VERSION1,       PIN(6, 4), GPIO_INPUT)    /* Board version stuffing resistor 1 */
+GPIO(BOARD_VERSION2,       PIN(6, 5), GPIO_INPUT)    /* Board version stuffing resistor 2 */
+GPIO(BOARD_VERSION3,       PIN(6, 6), GPIO_INPUT)    /* Board version stuffing resistor 3 */
+#ifdef CONFIG_KEYBOARD_COL2_INVERTED
+GPIO(KBD_KSO2,             PIN(1, 7), GPIO_OUT_LOW)  /* Negative edge triggered keyboard irq. */
+#endif
+
+/**************************** Alternate pins for UART/I2C/ADC/SPI/PWM/MFT ****************************/
+/* Alternate pins for UART/I2C/ADC/SPI/PWM/MFT */
+#if NPCX_UART_MODULE2
+ALTERNATE(PIN_MASK(6, 0x30), 1,  MODULE_UART,        0)    /* CR_SIN/SOUT             GPIO64/65    */
+#else
+ALTERNATE(PIN_MASK(1, 0x03), 1,  MODULE_UART,        0)    /* CR_SIN/SOUT             GPIO10/11    */
+#endif
+#if NPCX_I2C0_BUS2
+ALTERNATE(PIN_MASK(B, 0x0C), 1,  MODULE_I2C,         0)    /* I2C0SDA/I2C0SCL         GPIOB2/B3	   */
+#else
+ALTERNATE(PIN_MASK(B, 0x30), 1,  MODULE_I2C,         0)    /* I2C0SDA/I2C0SCL         GPIOB4/B5	   */
+#endif
+ALTERNATE(PIN_MASK(8, 0x80), 1,  MODULE_I2C,         0)    /* I2C1SDA                 GPIO87       */
+ALTERNATE(PIN_MASK(9, 0x07), 1,  MODULE_I2C,         0)    /* I2C1SCL/I2C2SDA/I2C2SCL GPIO90/91/92 */
+ALTERNATE(PIN_MASK(4, 0x38), 1,  MODULE_ADC,         0)    /* ADC                     GPIO45/44/43 */
+ALTERNATE(PIN_MASK(A, 0x0A), 1,  MODULE_SPI,         0)    /* SPIP_MOSI/SPIP_SCLK     GPIOA3/A1	   */
+ALTERNATE(PIN_MASK(9, 0x20), 1,  MODULE_SPI,         0)    /* SPIP_MISO               GPIO95       */
+ALTERNATE(PIN_MASK(C, 0x04), 3,  MODULE_PWM_KBLIGHT, 0)    /* PWM1 for PWM/KBLIGHT Test GPIOC2     */
+ALTERNATE(PIN_MASK(C, 0x08), 7,  MODULE_PWM_FAN,     0)    /* PWM0 for PWM/FAN Test   GPIOC3       */
+#if NPCX_TACH_SEL2
+ALTERNATE(PIN_MASK(9, 0x08), 3,  MODULE_PWM_FAN,     0)    /* MFT-1/TA1_TACH1 for FAN GPIO93       */
+#else
+ALTERNATE(PIN_MASK(4, 0x01), 3,  MODULE_PWM_FAN,     0)    /* MFT-1/TA1_TACH1 for FAN Test GPIO40  */
+#endif