Import of the watch repository from Pebble

platform/silk/boot/src/board/board.h

@@ -0,0 +1,101 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "display.h"
+
+#include "drivers/button_id.h"
+
+#include "stm32f4xx_gpio.h"
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#define GPIO_Port_NULL ((GPIO_TypeDef *) 0)
+#define GPIO_Pin_NULL ((uint16_t)0x0000)
+
+
+typedef struct {
+  //! One of EXTI_PortSourceGPIOX
+  uint8_t exti_port_source;
+
+  //! Value between 0-15
+  uint8_t exti_line;
+} ExtiConfig;
+
+typedef struct {
+  const char* const name; ///< Name for debugging purposes.
+  GPIO_TypeDef* const gpio; ///< One of GPIOX. For example, GPIOA.
+  const uint32_t gpio_pin; ///< One of GPIO_Pin_X.
+  ExtiConfig exti;
+  GPIOPuPd_TypeDef pull;
+} ButtonConfig;
+
+typedef struct {
+  GPIO_TypeDef* const gpio; ///< One of GPIOX. For example, GPIOA.
+  const uint32_t gpio_pin; ///< One of GPIO_Pin_X.
+} ButtonComConfig;
+
+typedef struct {
+  GPIO_TypeDef* const gpio; ///< One of GPIOX. For example, GPIOA.
+  const uint32_t gpio_pin; ///< One of GPIO_Pin_X.
+  bool active_high; ///< Pin is active high or active low
+} OutputConfig;
+
+//! Alternate function pin configuration
+//! Used to configure a pin for use by a peripheral
+typedef struct {
+  GPIO_TypeDef* const gpio; ///< One of GPIOX. For example, GPIOA.
+  const uint32_t gpio_pin; ///< One of GPIO_Pin_X.
+  const uint16_t gpio_pin_source; ///< One of GPIO_PinSourceX.
+  const uint8_t  gpio_af; ///< One of GPIO_AF_X
+} AfConfig;
+
+typedef struct {
+  I2C_TypeDef *const i2c;
+  AfConfig i2c_scl; ///< Alternate Function configuration for SCL pin
+  AfConfig i2c_sda; ///< Alternate Function configuration for SDA pin
+  uint32_t clock_ctrl;  ///< Peripheral clock control flag
+  uint32_t clock_speed; ///< Bus clock speed
+  uint32_t duty_cycle;  ///< Bus clock duty cycle in fast mode
+  const uint8_t ev_irq_channel; ///< I2C Event interrupt (One of X_IRQn). For example, I2C1_EV_IRQn.
+  const uint8_t er_irq_channel; ///< I2C Error interrupt (One of X_IRQn). For example, I2C1_ER_IRQn.
+  void (* const rail_cfg_fn)(void); //! Configure function for pins on this rail.
+  void (* const rail_ctl_fn)(bool enabled); //! Control function for this rail.
+} I2cBusConfig;
+
+typedef enum I2cDevice {
+  I2C_DEVICE_AS3701B,
+} I2cDevice;
+
+typedef struct {
+  // I2C Configuration
+  /////////////////////////////////////////////////////////////////////////////
+  const I2cBusConfig *i2c_bus_configs;
+  const uint8_t i2c_bus_count;
+  const uint8_t *i2c_device_map;
+  const uint8_t i2c_device_count;
+} BoardConfig;
+
+// Button Configuration
+/////////////////////////////////////////////////////////////////////////////
+typedef struct {
+  const ButtonConfig buttons[NUM_BUTTONS];
+  const ButtonComConfig button_com;
+} BoardConfigButton;
+
+#include "board_definitions.h"

platform/silk/boot/src/board/board_definitions.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#if BOARD_SILK
+#include "board_silk.h"
+#else
+#error "Unknown board definition"
+#endif

platform/silk/boot/src/board/board_silk.h

@@ -0,0 +1,115 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "util/misc.h"
+
+#define BOARD_LSE_MODE RCC_LSE_Bypass
+
+#define USE_PARALLEL_FLASH 1 // FIXME PBL-28872: Hack to get the "modern" flash layout.
+                             // Fix when we add support for new flash
+
+#define BOARD_I2C_BUS_COUNT (ARRAY_LENGTH(SILK_I2C_BUS_CONFIGS))
+
+static const I2cBusConfig SILK_I2C_BUS_CONFIGS[] = {
+  // PMIC I2c
+  [0] = {
+    .i2c = I2C3,
+    .i2c_scl = { GPIOA, GPIO_Pin_8, GPIO_PinSource8, GPIO_AF_I2C3 },
+    .i2c_sda = { GPIOB, GPIO_Pin_8, GPIO_PinSource8, GPIO_AF9_I2C3 },
+    .clock_speed = 400000,
+    .duty_cycle = I2C_DutyCycle_16_9,
+    .clock_ctrl = RCC_APB1Periph_I2C3,
+    .ev_irq_channel = I2C3_EV_IRQn,
+    .er_irq_channel = I2C3_ER_IRQn,
+  },
+};
+
+static const uint8_t SILK_I2C_DEVICE_MAP[] = {
+  [I2C_DEVICE_AS3701B] = 0,
+};
+
+static const BoardConfig BOARD_CONFIG = {
+  .i2c_bus_configs = SILK_I2C_BUS_CONFIGS,
+  .i2c_bus_count = BOARD_I2C_BUS_COUNT,
+  .i2c_device_map = SILK_I2C_DEVICE_MAP,
+  .i2c_device_count = ARRAY_LENGTH(SILK_I2C_DEVICE_MAP),
+};
+
+static const BoardConfigButton BOARD_CONFIG_BUTTON = {
+  .buttons = {
+    [BUTTON_ID_BACK] =
+        { "Back",   GPIOC, GPIO_Pin_13, { EXTI_PortSourceGPIOC, 13 }, GPIO_PuPd_NOPULL },
+    [BUTTON_ID_UP] =
+        { "Up",     GPIOD, GPIO_Pin_2, { EXTI_PortSourceGPIOD, 2 }, GPIO_PuPd_DOWN },
+    [BUTTON_ID_SELECT] =
+        { "Select", GPIOH, GPIO_Pin_0, { EXTI_PortSourceGPIOH, 0 }, GPIO_PuPd_DOWN },
+    [BUTTON_ID_DOWN] =
+        { "Down",   GPIOH, GPIO_Pin_1, { EXTI_PortSourceGPIOH, 1 }, GPIO_PuPd_DOWN },
+  },
+
+  .button_com = { 0 },
+};
+
+typedef enum {
+  QSpiPin_CS,
+  QSpiPin_SCLK,
+  QSpiPin_DQ0,
+  QSpiPin_DQ1,
+  QSpiPin_DQ2,
+  QSpiPin_DQ3,
+  QSpiPinCount,
+} QSpiPin;
+
+static const AfConfig BOARD_CONFIG_FLASH_PINS[] = {
+  [QSpiPin_CS] = {
+    .gpio = GPIOB,
+    .gpio_pin = GPIO_Pin_6,
+    .gpio_pin_source = GPIO_PinSource6,
+    .gpio_af = GPIO_AF10_QUADSPI,
+  },
+  [QSpiPin_SCLK] = {
+    .gpio = GPIOB,
+    .gpio_pin = GPIO_Pin_2,
+    .gpio_pin_source = GPIO_PinSource2,
+    .gpio_af = GPIO_AF9_QUADSPI,
+  },
+  [QSpiPin_DQ0] = {
+    .gpio = GPIOC,
+    .gpio_pin = GPIO_Pin_9,
+    .gpio_pin_source = GPIO_PinSource9,
+    .gpio_af = GPIO_AF9_QUADSPI,
+  },
+  [QSpiPin_DQ1] = {
+    .gpio = GPIOC,
+    .gpio_pin = GPIO_Pin_10,
+    .gpio_pin_source = GPIO_PinSource10,
+    .gpio_af = GPIO_AF9_QUADSPI,
+  },
+  [QSpiPin_DQ2] = {
+    .gpio = GPIOC,
+    .gpio_pin = GPIO_Pin_8,
+    .gpio_pin_source = GPIO_PinSource8,
+    .gpio_af = GPIO_AF9_QUADSPI,
+  },
+  [QSpiPin_DQ3] = {
+    .gpio = GPIOA,
+    .gpio_pin = GPIO_Pin_1,
+    .gpio_pin_source = GPIO_PinSource1,
+    .gpio_af = GPIO_AF9_QUADSPI,
+  },
+};

platform/silk/boot/src/board/display.h

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#define DISP_COLS 144
+#define DISP_ROWS 168
+#define PBL_DISP_SHAPE_RECT