First drop of ryu sensor hub file

For building a basic image for the Ryu Sensor Hub.

BUG=chrome-os-partner:30801
TEST=uart work, i2c master finds device, pin with EC works.
BRANCH=ToT
Change-Id: I6f8c6fa550da91eabf8b21452684d2de410611b9
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/210755
Reviewed-by: Vic Yang <victoryang@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>

5 files changed, 161 insertions, 0 deletions

diff --git a/board/ryu_sh/board.c b/board/ryu_sh/board.c
new file mode 100644
index 0000000000..577b5b3a0c
--- /dev/null
+++ b/board/ryu_sh/board.c
@@ -0,0 +1,32 @@
+/* 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.
+ */
+/* ryu sensor hub configuration */
+
+#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. */
+static void board_init(void)
+{
+}
+DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
+
+/* I2C ports */
+const struct i2c_port_t i2c_ports[] = {
+	{"master", I2C_PORT_MASTER, 100,
+		GPIO_MASTER_I2C_SCL, GPIO_MASTER_I2C_SDA},
+	{"slave",  I2C_PORT_SLAVE, 100,
+		GPIO_SLAVE_I2C_SCL, GPIO_SLAVE_I2C_SDA},
+};
+const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
+
diff --git a/board/ryu_sh/board.h b/board/ryu_sh/board.h
new file mode 100644
index 0000000000..298f0df223
--- /dev/null
+++ b/board/ryu_sh/board.h
@@ -0,0 +1,50 @@
+/* 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.
+ */
+
+/* ryu sensor board configuration */
+
+#ifndef __BOARD_H
+#define __BOARD_H
+
+/* 48 MHz SYSCLK clock frequency */
+#define CPU_CLOCK 48000000
+
+/* the UART console is on USART2 (PA2/PA3) */
+#undef CONFIG_UART_CONSOLE
+#define CONFIG_UART_CONSOLE 2
+
+/* By default, enable all console messages  */
+#define CC_DEFAULT     CC_ALL
+
+/* Optional features */
+#define CONFIG_STM_HWTIMER32
+#define CONFIG_I2C
+#undef  CONFIG_LID_SWITCH
+#define CONFIG_VBOOT_HASH
+#undef CONFIG_WATCHDOG_HELP
+
+/* I2C ports configuration */
+#define I2C_PORT_MASTER 1
+#define I2C_PORT_SLAVE  0
+#define I2C_PORT_EC I2C_PORT_SLAVE
+#define I2C_PORT_ACCEL I2C_PORT_MASTER
+#define I2C_PORT_COMPASS I2C_PORT_MASTER
+
+/* slave address for host commands */
+#ifdef HAS_TASK_HOSTCMD
+#define CONFIG_HOSTCMD_I2C_SLAVE_ADDR 0x3e
+#endif
+
+#ifndef __ASSEMBLER__
+
+/* Timer selection */
+#define TIM_CLOCK32 2
+#define TIM_ADC     3
+
+#include "gpio_signal.h"
+
+#endif /* !__ASSEMBLER__ */
+
+#endif /* __BOARD_H */
diff --git a/board/ryu_sh/build.mk b/board/ryu_sh/build.mk
new file mode 100644
index 0000000000..76ac52f9e5
--- /dev/null
+++ b/board/ryu_sh/build.mk
@@ -0,0 +1,12 @@
+# 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 STM32F072VBH6
+CHIP:=stm32
+CHIP_FAMILY:=stm32f0
+CHIP_VARIANT:=stm32f07x
+
+board-y=board.o
diff --git a/board/ryu_sh/ec.tasklist b/board/ryu_sh/ec.tasklist
new file mode 100644
index 0000000000..aaed7865c8
--- /dev/null
+++ b/board/ryu_sh/ec.tasklist
@@ -0,0 +1,22 @@
+/* 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, LARGER_TASK_STACK_SIZE) \
+	TASK_NOTEST(HOSTCMD, host_command_task, NULL, TASK_STACK_SIZE) \
+	TASK_ALWAYS(CONSOLE, console_task, NULL, TASK_STACK_SIZE)
diff --git a/board/ryu_sh/gpio.inc b/board/ryu_sh/gpio.inc
new file mode 100644
index 0000000000..f2adefb4b5
--- /dev/null
+++ b/board/ryu_sh/gpio.inc
@@ -0,0 +1,45 @@
+/* -*- 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.
+ */
+
+/* Interrupts */
+/*
+ * TODO(gwendal): Follow Rambus work.
+ * Combined accelerometer input. This will become an interrupt, once we have
+ * support for it.
+ */
+GPIO(ACC_IRQ,              B, 12, GPIO_INPUT,  NULL)
+
+/* Outputs */
+GPIO(SH_EC_SIGNAL,         A, 7,  GPIO_OUT_LOW,  NULL)
+GPIO(SH_IRQ_L,             A, 11, GPIO_OUT_LOW,  NULL)
+
+/* Inputs */
+GPIO(COMPASS_DRDY,         B, 11, GPIO_INPUT,  NULL)
+GPIO(AP_IN_SUSPEND,        B, 15, GPIO_INPUT,  NULL)
+
+#if 0
+/* Alternate functions */
+GPIO(UART_TX,              A,  2, GPIO_OUT_LOW,  NULL)
+GPIO(UART_RX,              A,  3, GPIO_OUT_LOW,  NULL)
+#endif
+
+/* Needed to bypass flash write protection */
+UNIMPLEMENTED(ENTERING_RW)
+UNIMPLEMENTED(WP_L)
+
+/*
+ * I2C pins should be configured as inputs until I2C module is
+ * initialized. This will avoid driving the lines unintentionally.
+ */
+GPIO(SLAVE_I2C_SCL,        B,  6, GPIO_INPUT,    NULL)
+GPIO(SLAVE_I2C_SDA,        B,  7, GPIO_INPUT,    NULL)
+GPIO(MASTER_I2C_SCL,       B, 13, GPIO_INPUT,    NULL)
+GPIO(MASTER_I2C_SDA,       B, 14, GPIO_INPUT,    NULL)
+
+ALTERNATE(A, 0x000C, 1, MODULE_UART,   0) /* USART2: PA2/PA3 */
+ALTERNATE(B, 0x00C0, 1, MODULE_I2C,    0) /* I2C SLAVE:PB6/7 */
+ALTERNATE(B, 0x6000, 5, MODULE_I2C,    0) /* I2C MASTER:PB13/14 */