hoho: Initial board configuration.

Create necessary boiler plate files for USB type-C to HDMI dongle.

BRANCH=none
BUG=chrome-os-partner:31192
TEST=manual
1. Compiles & can program via fruitpie.
2. Can access uart (w/ rework for tx/rx).
3. Can drive HDMI capable monitor.

test details ...

Programming:
------------
   # connect fruitpie + fruitpie std-adapter(red) with u-USB (CN3) & type-A
   # (CN1) both to host that will run servod.
   FPIE_PORT=9993
   sudo servod -p 0x5009 --port $FPIE_PORT

   dut-control --port $FPIE_PORT "ec_uart_cmd:gpioset USB_C_5V_EN 1"
   dut-control --port $FPIE_PORT "ec_uart_cmd:usbmux usb"
   util/flash_ec --board=hoho

Configuring samus for DPout on both ports:
------------------------------------------

    sudo servod -b samus

    for port 0 1; do
        dut-control "usbpd_uart_cmd:pd ${PORT} dualrole off"
        dut-control "usbpd_uart_cmd:gpioset USB_C${PORT}_CHARGE_EN_L 1"
        dut-control "usbpd_uart_cmd:typec ${PORT} dp"
        dut-control "usbpd_uart_cmd:gpioset USB_C${PORT}_5V_EN 1"
        dut-control "usbpd_uart_cmd:typec ${PORT}"
    done
Change-Id: I39bbe1e347d1cfd777b68f3fdac6c5c6dd22800d
Signed-off-by: Todd Broch <tbroch@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/212523
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>

7 files changed, 162 insertions, 1 deletions

diff --git a/board/hoho/Makefile b/board/hoho/Makefile
new file mode 120000
index 0000000000..94aaae2c4d
--- /dev/null
+++ b/board/hoho/Makefile
@@ -0,0 +1 @@
+../../Makefile
\ No newline at end of file
diff --git a/board/hoho/board.c b/board/hoho/board.c
new file mode 100644
index 0000000000..b0e3a7d37b
--- /dev/null
+++ b/board/hoho/board.c
@@ -0,0 +1,40 @@
+/* Copyright (c) 2014 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.
+ */
+/* Twinkie dongle configuration */
+
+#include "adc.h"
+#include "adc_chip.h"
+#include "common.h"
+#include "console.h"
+#include "gpio.h"
+#include "hooks.h"
+#include "i2c.h"
+#include "registers.h"
+#include "task.h"
+#include "util.h"
+
+#include "gpio_list.h"
+
+/* Initialize board. */
+void board_config_pre_init(void)
+{
+	/* enable SYSCFG clock */
+	STM32_RCC_APB2ENR |= 1 << 0;
+	/* Remap USART DMA to match the USART driver */
+	STM32_SYSCFG_CFGR1 |= (1 << 9) | (1 << 10);/* Remap USART1 RX/TX DMA */
+}
+
+/* ADC channels */
+const struct adc_t adc_channels[] = {
+	/* USB PD CC lines sensing. Converted to mV (3300mV/4096). */
+	[ADC_CH_CC1_PD] = {"USB_C_CC1_PD", 3300, 4096, 0, STM32_AIN(1)},
+};
+BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
+
+/* I2C ports */
+const struct i2c_port_t i2c_ports[] = {
+	{"master", I2C_PORT_MASTER, 400, GPIO_MCDP_I2C_SCL, GPIO_MCDP_I2C_SDA},
+};
+const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
diff --git a/board/hoho/board.h b/board/hoho/board.h
new file mode 100644
index 0000000000..47fd3a28f4
--- /dev/null
+++ b/board/hoho/board.h
@@ -0,0 +1,52 @@
+/* Copyright (c) 2014 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.
+ */
+
+/* Twinkie dongle configuration */
+
+#ifndef __BOARD_H
+#define __BOARD_H
+
+/* 48 MHz SYSCLK clock frequency */
+#define CPU_CLOCK 48000000
+
+/* the UART console is on USART1 (PA9/PA10) */
+#define CONFIG_UART_CONSOLE 1
+
+/* Optional features */
+#define CONFIG_STM_HWTIMER32
+#define CONFIG_ADC
+#define CONFIG_BOARD_PRE_INIT
+#define CONFIG_I2C
+#undef CONFIG_WATCHDOG_HELP
+#undef CONFIG_LID_SWITCH
+#undef CONFIG_TASK_PROFILING
+
+/* I2C ports configuration */
+#define I2C_PORT_MASTER 0
+
+/*
+ * Allow dangerous commands all the time, since we don't have a write protect
+ * switch.
+ */
+#define CONFIG_SYSTEM_UNLOCKED
+
+#ifndef __ASSEMBLER__
+
+/* Timer selection */
+#define TIM_CLOCK_PD_RX 1
+#define TIM_CLOCK32 2
+#define TIM_ADC     3
+
+#include "gpio_signal.h"
+
+/* ADC signal */
+enum adc_channel {
+	ADC_CH_CC1_PD = 0,
+	/* Number of ADC channels */
+	ADC_CH_COUNT
+};
+#endif /* !__ASSEMBLER__ */
+
+#endif /* __BOARD_H */
diff --git a/board/hoho/build.mk b/board/hoho/build.mk
new file mode 100644
index 0000000000..83b8716734
--- /dev/null
+++ b/board/hoho/build.mk
@@ -0,0 +1,13 @@
+# -*- makefile -*-
+# Copyright (c) 2014 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 STmicro STM32F072B
+CHIP:=stm32
+CHIP_FAMILY:=stm32f0
+CHIP_VARIANT:=stm32f07x
+
+board-y=board.o
diff --git a/board/hoho/ec.tasklist b/board/hoho/ec.tasklist
new file mode 100644
index 0000000000..8ff4e8234b
--- /dev/null
+++ b/board/hoho/ec.tasklist
@@ -0,0 +1,21 @@
+/* Copyright (c) 2014 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' in the name of the task
+ * 'r' in the main routine of the task
+ * 'd' in 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, TASK_STACK_SIZE) \
+	TASK_ALWAYS(CONSOLE, console_task, NULL, TASK_STACK_SIZE)
diff --git a/board/hoho/gpio.inc b/board/hoho/gpio.inc
new file mode 100644
index 0000000000..98eb079cd6
--- /dev/null
+++ b/board/hoho/gpio.inc
@@ -0,0 +1,33 @@
+/* -*- mode:c -*-
+ *
+ * Copyright (c) 2014 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.
+ */
+GPIO(DP_HPD,           A, 0,  GPIO_INPUT,    NULL)
+GPIO(USB_C_CC1_PD,     A, 1,  GPIO_ANALOG,   NULL)
+GPIO(MCDP_RESET_L,     A, 3,  GPIO_OUT_HIGH, NULL)
+GPIO(PD_DAC_REF,       A, 4,  GPIO_ANALOG,   NULL)
+
+GPIO(PD_RFU1_ENABLE,   A, 7,  GPIO_OUT_HIGH, NULL)
+GPIO(PD_RFU2_ENABLE,   A, 8,  GPIO_OUT_HIGH, NULL)
+GPIO(USB_DM,           A, 11, GPIO_ANALOG,   NULL)
+GPIO(USB_DP,           A, 12, GPIO_ANALOG,   NULL)
+GPIO(PD_CC1_TX_EN,     A, 15, GPIO_OUT_LOW,  NULL)
+
+GPIO(MCDP_GPIO1,       B, 0,  GPIO_INPUT,    NULL)
+GPIO(MCDP_CONFIG1,     B, 1,  GPIO_OUT_LOW,  NULL)
+GPIO(PD_MCDP_SPI_WP_L, B, 2,  GPIO_OUT_LOW,  NULL)
+GPIO(PD_CC1_TX_DATA,   B, 4,  GPIO_OUT_LOW,  NULL)
+GPIO(MCDP_I2C_SCL,     B, 6,  GPIO_INPUT,    NULL)
+GPIO(MCDP_I2C_SDA,     B, 7,  GPIO_INPUT,    NULL)
+
+/* Unimplemented signals which we need to emulate for now */
+UNIMPLEMENTED(ENTERING_RW)
+UNIMPLEMENTED(WP_L)
+
+ALTERNATE(B, 0x0008, 0, MODULE_USB_PD, 0)            /* SPI1: SCK(PB3) */
+ALTERNATE(B, 0x0200, 2, MODULE_USB_PD, 0)            /* TIM17_CH1: PB9 */
+ALTERNATE(A, 0x0600, 1, MODULE_UART,   GPIO_PULL_UP) /* USART1: PA9/PA10 */
+ALTERNATE(B, 0x0C00, 4, MODULE_UART,   GPIO_PULL_UP) /* USART3: PB10/PB11 */
+ALTERNATE(B, 0x00C0, 1, MODULE_I2C,    0)            /* I2C1 MASTER:PB6/7 */
diff --git a/util/flash_ec b/util/flash_ec
index 7070b70407..279a6233bb 100755
--- a/util/flash_ec
+++ b/util/flash_ec
@@ -77,6 +77,7 @@ BOARDS_STM32=(
 
 BOARDS_STM32_DFU=(
 	twinkie
+	hoho
 )
 
 # Flags
@@ -231,7 +232,7 @@ function ec_uart() {
 case "${BOARD}" in
 	ryu_sh ) MCU="sh" ;;
 	samus_pd ) MCU="usbpd" ;;
-	twinkie ) DUT_CONTROL_CMD="true" ; MCU="ec" ;;
+	twinkie|hoho ) DUT_CONTROL_CMD="true" ; MCU="ec" ;;
 	*) MCU="ec" ;;
 esac