stm32l: add support for ADV board

Compared to Daisy, it has the EC console on USART2 (pins PA2 and PA3)
and regulator enable GPIOS EN_PP1350 and EN_PP5000 are on PA9/PA10.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BUG=None
TEST=make BOARD=adv && make BOARD=daisy && make BOARD=discovery

Change-Id: I545f7c9b05480e58db913ea562c77a1a1cd2b11c

board/adv/board.c

@@ -0,0 +1,44 @@
+/* Copyright (c) 2012 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.
+ */
+/* ADV board-specific configuration */
+
+#include "board.h"
+#include "common.h"
+#include "gpio.h"
+#include "registers.h"
+#include "util.h"
+
+/* GPIO interrupt handlers prototypes */
+void gaia_power_event(enum gpio_signal signal);
+
+/* GPIO signal list.  Must match order from enum gpio_signal. */
+const struct gpio_info gpio_list[GPIO_COUNT] = {
+	/* Inputs with interrupt handlers are first for efficiency */
+	{"EC_PWRON",    GPIO_A, (1<<0),  GPIO_INT_BOTH, gaia_power_event},
+	{"PP1800_LDO2", GPIO_A, (1<<1),  GPIO_INT_BOTH, gaia_power_event},
+	{"XPSHOLD",     GPIO_A, (1<<11), GPIO_INT_RISING, gaia_power_event},
+	{"CHARGER_INT", GPIO_B, (1<<0),  GPIO_INT_RISING, NULL},
+	{"LID_OPEN",    GPIO_C, (1<<13), GPIO_INT_BOTH, NULL},
+	/* Other inputs */
+	/* Outputs */
+	{"EN_PP1350",   GPIO_A, (1<<9),  GPIO_OUT_LOW, NULL},
+	{"EN_PP5000",   GPIO_A, (1<<10), GPIO_OUT_LOW, NULL},
+	{"EN_PP3300",   GPIO_A, (1<<8),  GPIO_OUT_LOW, NULL},
+	{"PMIC_ACOK",   GPIO_A, (1<<12), GPIO_OUT_LOW, NULL},
+	{"ENTERING_RW", GPIO_B, (1<<1),  GPIO_OUT_LOW, NULL},
+	{"CHARGER_EN",  GPIO_B, (1<<2),  GPIO_OUT_LOW, NULL},
+	{"EC_INT",      GPIO_B, (1<<9),  GPIO_OUT_LOW, NULL},
+};
+
+void configure_board(void)
+{
+	/* Enable all GPIOs clocks
+	 * TODO: more fine-grained enabling for power saving
+	 */
+	STM32L_RCC_AHBENR |= 0x3f;
+
+	/* Select Alternate function for USART2 on pins PA2/PA3 */
+        gpio_set_alternate_function(GPIO_A, (1<<2) | (1<<3), GPIO_ALT_USART);
+}

board/adv/board.h

@@ -0,0 +1,43 @@
+/* Copyright (c) 2012 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.
+ */
+
+/* ADV board configuration */
+
+#ifndef __BOARD_H
+#define __BOARD_H
+
+/* 16 MHz SYSCLK clock frequency */
+#define CPU_CLOCK 16000000
+
+/* Use USART2 as console serial port */
+#define CONFIG_CONSOLE_UART 2
+
+#define USB_CHARGE_PORT_COUNT 0
+
+/* GPIO signal list */
+enum gpio_signal {
+	/* Inputs with interrupt handlers are first for efficiency */
+	GPIO_EC_PWRON = 0,     /* Power button */
+	GPIO_PP1800_LDO2,      /* LDO2 is ON (end of PMIC sequence) */
+	GPIO_SOC1V8_XPSHOLD,   /* App Processor ON  */
+	GPIO_CHARGER_INT,
+	GPIO_LID_OPEN,         /* LID switch detection */
+	/* Other inputs */
+	/* Outputs */
+	GPIO_EN_PP1350,        /* DDR 1.35v rail enable */
+	GPIO_EN_PP5000,        /* 5.0v rail enable */
+	GPIO_EN_PP3300,        /* 3.3v rail enable */
+	GPIO_PMIC_ACOK,        /* 5v rail ready */
+	GPIO_EC_ENTERING_RW,   /* EC is R/W mode for the kbc mux */
+	GPIO_CHARGER_EN,
+	GPIO_EC_INT,
+
+	/* Number of GPIOs; not an actual GPIO */
+	GPIO_COUNT
+};
+
+void configure_board(void);
+
+#endif /* __BOARD_H */

board/adv/build.mk

@@ -0,0 +1,10 @@
+# Copyright (c) 2012 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 STM32L151R8H6
+CHIP:=stm32l
+
+board-y=board.o

board/adv/ec.tasklist

@@ -0,0 +1,19 @@
+/* Copyright (c) 2012 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(n, r, d) 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
+ */
+#define CONFIG_TASK_LIST \
+	TASK(WATCHDOG, watchdog_task, NULL) \
+	TASK(GAIAPOWER, gaia_power_task, NULL) \
+	TASK(CONSOLE, console_task, NULL)

chip/stm32l/config.h

@@ -20,7 +20,11 @@
 #define CONFIG_IRQ_COUNT 45
 
 /* Debug UART parameters for panic message */
-#define CONFIG_UART_ADDRESS    0x40013800
+#ifdef BOARD_adv
+#define CONFIG_UART_ADDRESS    0x40004400 /* USART2 */
+#else
+#define CONFIG_UART_ADDRESS    0x40013800 /* USART1 */
+#endif
 #define CONFIG_UART_DR_OFFSET  0x04
 #define CONFIG_UART_SR_OFFSET  0x00
 #define CONFIG_UART_SR_TXEMPTY 0x80