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authorUwe Bonnes2013-01-16 16:56:22 +0100
committerUwe Bonnes2013-01-21 11:02:44 +0100
commit7e91f68efa13e7a2b510d2631a916209d4317f9b (patch)
tree2aacd7531462679d052a9666c66f3a2050df470f /src
parent15d7077115f4c1fbaee03a0cb1b641e40215c86e (diff)
f4discovery: Create a platforms directory for the F4 on the F4 Discovery board
Diffstat (limited to 'src')
-rw-r--r--src/platforms/f4discovery/Makefile.inc36
-rw-r--r--src/platforms/f4discovery/platform.c306
-rw-r--r--src/platforms/f4discovery/platform.h198
-rw-r--r--src/platforms/stm32/f4discovery.ld28
4 files changed, 568 insertions, 0 deletions
diff --git a/src/platforms/f4discovery/Makefile.inc b/src/platforms/f4discovery/Makefile.inc
new file mode 100644
index 0000000..4c56bd6
--- /dev/null
+++ b/src/platforms/f4discovery/Makefile.inc
@@ -0,0 +1,36 @@
+CROSS_COMPILE ?= arm-none-eabi-
+CC = $(CROSS_COMPILE)gcc
+OBJCOPY = $(CROSS_COMPILE)objcopy
+
+CFLAGS += -Istm32/include -mcpu=cortex-m3 -mthumb \
+ -DSTM32F1 -DBLACKMAGIC -I../libopencm3/include
+
+LDFLAGS_BOOT = -lopencm3_stm32f1 -Wl,--defsym,_stack=0x20005000 \
+ -Wl,-T,platforms/stm32/blackmagic.ld -nostartfiles -lc -lnosys \
+ -Wl,-Map=mapfile -mthumb -mcpu=cortex-m3 -Wl,-gc-sections \
+ -L../libopencm3/lib
+LDFLAGS = $(LDFLAGS_BOOT) -Wl,-Ttext=0x8002000
+
+VPATH += platforms/stm32
+
+SRC += cdcacm.c \
+ platform.c \
+ traceswo.c \
+ usbuart.c \
+
+all: blackmagic.bin blackmagic_dfu.bin blackmagic_dfu.hex
+
+blackmagic.bin: blackmagic
+ $(OBJCOPY) -O binary $^ $@
+
+blackmagic_dfu: usbdfu.o
+ $(CC) $^ -o $@ $(LDFLAGS_BOOT)
+
+blackmagic_dfu.bin: blackmagic_dfu
+ $(OBJCOPY) -O binary $^ $@
+
+blackmagic_dfu.hex: blackmagic_dfu
+ $(OBJCOPY) -O ihex $^ $@
+
+host_clean:
+ -rm blackmagic.bin blackmagic_dfu blackmagic_dfu.bin blackmagic_dfu.hex
diff --git a/src/platforms/f4discovery/platform.c b/src/platforms/f4discovery/platform.c
new file mode 100644
index 0000000..0e81ba4
--- /dev/null
+++ b/src/platforms/f4discovery/platform.c
@@ -0,0 +1,306 @@
+/*
+ * This file is part of the Black Magic Debug project.
+ *
+ * Copyright (C) 2011 Black Sphere Technologies Ltd.
+ * Written by Gareth McMullin <gareth@blacksphere.co.nz>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* This file implements the platform specific functions for the STM32
+ * implementation.
+ */
+
+#include <libopencm3/stm32/f1/rcc.h>
+#include <libopencm3/cm3/systick.h>
+#include <libopencm3/cm3/scb.h>
+#include <libopencm3/cm3/nvic.h>
+#include <libopencm3/stm32/exti.h>
+#include <libopencm3/stm32/usart.h>
+#include <libopencm3/usb/usbd.h>
+#include <libopencm3/stm32/f1/adc.h>
+
+#include "platform.h"
+#include "jtag_scan.h"
+#include <usbuart.h>
+
+#include <ctype.h>
+
+uint8_t running_status;
+volatile uint32_t timeout_counter;
+
+jmp_buf fatal_error_jmpbuf;
+
+static void morse_update(void);
+
+static void adc_init(void);
+
+/* Pins PB[7:5] are used to detect hardware revision.
+ * 000 - Original production build.
+ * 001 - Mini production build.
+ */
+int platform_hwversion(void)
+{
+ static int hwversion = -1;
+ if (hwversion == -1) {
+ gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
+ GPIO_CNF_INPUT_PULL_UPDOWN,
+ GPIO7 | GPIO6 | GPIO5);
+ gpio_clear(GPIOB, GPIO7 | GPIO6 | GPIO5);
+ hwversion = gpio_get(GPIOB, GPIO7 | GPIO6 | GPIO5) >> 5;
+ }
+ return hwversion;
+}
+
+int platform_init(void)
+{
+ rcc_clock_setup_in_hse_8mhz_out_72mhz();
+
+ /* Enable peripherals */
+ rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN);
+ rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
+ rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
+ rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
+
+ /* Setup GPIO ports */
+ gpio_clear(USB_PU_PORT, USB_PU_PIN);
+ gpio_set_mode(USB_PU_PORT, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT,
+ USB_PU_PIN);
+
+ gpio_set_mode(JTAG_PORT, GPIO_MODE_OUTPUT_50_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL,
+ TMS_PIN | TCK_PIN | TDI_PIN);
+
+ /* This needs some fixing... */
+ /* Toggle required to sort out line drivers... */
+ gpio_port_write(GPIOA, 0x8100);
+ gpio_port_write(GPIOB, 0x2000);
+
+ gpio_port_write(GPIOA, 0x8180);
+ gpio_port_write(GPIOB, 0x2002);
+
+ gpio_set_mode(LED_PORT, GPIO_MODE_OUTPUT_2_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL,
+ LED_UART | LED_IDLE_RUN | LED_ERROR);
+
+ /* FIXME: This pin in intended to be input, but the TXS0108 fails
+ * to release the device from reset if this floats. */
+ gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL, GPIO7);
+
+ /* Setup heartbeat timer */
+ systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
+ systick_set_reload(900000); /* Interrupt us at 10 Hz */
+ SCB_SHPR(11) &= ~((15 << 4) & 0xff);
+ SCB_SHPR(11) |= ((14 << 4) & 0xff);
+ systick_interrupt_enable();
+ systick_counter_enable();
+
+ usbuart_init();
+
+ if (platform_hwversion() > 0) {
+ adc_init();
+ } else {
+ gpio_clear(GPIOB, GPIO0);
+ gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
+ GPIO_CNF_INPUT_PULL_UPDOWN, GPIO0);
+ }
+
+ SCB_VTOR = 0x2000; // Relocate interrupt vector table here
+
+ cdcacm_init();
+
+ jtag_scan(NULL);
+
+ return 0;
+}
+
+void platform_delay(uint32_t delay)
+{
+ timeout_counter = delay;
+ while(timeout_counter);
+}
+
+void sys_tick_handler(void)
+{
+ if(running_status)
+ gpio_toggle(LED_PORT, LED_IDLE_RUN);
+
+ if(timeout_counter)
+ timeout_counter--;
+
+ morse_update();
+}
+
+
+/* Morse code patterns and lengths */
+static const struct {
+ uint16_t code;
+ uint8_t bits;
+} morse_letter[] = {
+ { 0b00011101, 8}, // 'A' .-
+ { 0b000101010111, 12}, // 'B' -...
+ { 0b00010111010111, 14}, // 'C' -.-.
+ { 0b0001010111, 10}, // 'D' -..
+ { 0b0001, 4}, // 'E' .
+ { 0b000101110101, 12}, // 'F' ..-.
+ { 0b000101110111, 12}, // 'G' --.
+ { 0b0001010101, 10}, // 'H' ....
+ { 0b000101, 6}, // 'I' ..
+ {0b0001110111011101, 16}, // 'J' .---
+ { 0b000111010111, 12}, // 'K' -.-
+ { 0b000101011101, 12}, // 'L' .-..
+ { 0b0001110111, 10}, // 'M' --
+ { 0b00010111, 8}, // 'N' -.
+ { 0b00011101110111, 14}, // 'O' ---
+ { 0b00010111011101, 14}, // 'P' .--.
+ {0b0001110101110111, 16}, // 'Q' --.-
+ { 0b0001011101, 10}, // 'R' .-.
+ { 0b00010101, 8}, // 'S' ...
+ { 0b000111, 6}, // 'T' -
+ { 0b0001110101, 10}, // 'U' ..-
+ { 0b000111010101, 12}, // 'V' ...-
+ { 0b000111011101, 12}, // 'W' .--
+ { 0b00011101010111, 14}, // 'X' -..-
+ {0b0001110111010111, 16}, // 'Y' -.--
+ { 0b00010101110111, 14}, // 'Z' --..
+};
+
+
+const char *morse_msg;
+static const char * volatile morse_ptr;
+static char morse_repeat;
+
+void morse(const char *msg, char repeat)
+{
+ morse_msg = morse_ptr = msg;
+ morse_repeat = repeat;
+ SET_ERROR_STATE(0);
+}
+
+static void morse_update(void)
+{
+ static uint16_t code;
+ static uint8_t bits;
+
+ if(!morse_ptr) return;
+
+ if(!bits) {
+ char c = *morse_ptr++;
+ if(!c) {
+ if(morse_repeat) {
+ morse_ptr = morse_msg;
+ c = *morse_ptr++;
+ } else {
+ morse_ptr = 0;
+ return;
+ }
+ }
+ if((c >= 'A') && (c <= 'Z')) {
+ c -= 'A';
+ code = morse_letter[c].code;
+ bits = morse_letter[c].bits;
+ } else {
+ code = 0; bits = 4;
+ }
+ }
+ SET_ERROR_STATE(code & 1);
+ code >>= 1; bits--;
+}
+
+static void adc_init(void)
+{
+ rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
+
+ gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
+ GPIO_CNF_INPUT_ANALOG, GPIO0);
+
+ adc_off(ADC1);
+ adc_disable_scan_mode(ADC1);
+ adc_set_single_conversion_mode(ADC1);
+ adc_disable_external_trigger_regular(ADC1);
+ adc_set_right_aligned(ADC1);
+ adc_set_conversion_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
+
+ adc_power_on(ADC1);
+
+ /* Wait for ADC starting up. */
+ for (int i = 0; i < 800000; i++) /* Wait a bit. */
+ __asm__("nop");
+
+ adc_reset_calibration(ADC1);
+ adc_calibration(ADC1);
+}
+
+const char *platform_target_voltage(void)
+{
+ if (platform_hwversion() == 0)
+ return gpio_get(GPIOB, GPIO0) ? "OK" : "ABSENT!";
+
+ static char ret[] = "0.0V";
+ const u8 channel = 8;
+ adc_set_regular_sequence(ADC1, 1, (u8*)&channel);
+
+ adc_on(ADC1);
+
+ /* Wait for end of conversion. */
+ while (!(ADC_SR(ADC1) & ADC_SR_EOC));
+
+ u32 val = ADC_DR(ADC1) * 99; /* 0-4095 */
+ ret[0] = '0' + val / 81910;
+ ret[2] = '0' + (val / 8191) % 10;
+
+ return ret;
+}
+
+void assert_boot_pin(void)
+{
+ gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL, GPIO12);
+ gpio_clear(GPIOB, GPIO12);
+}
+
+void exti15_10_isr(void)
+{
+ if (gpio_get(USB_VBUS_PORT, USB_VBUS_PIN)) {
+ /* Drive pull-up high if VBUS connected */
+ gpio_set_mode(USB_PU_PORT, GPIO_MODE_OUTPUT_10_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL, USB_PU_PIN);
+ } else {
+ /* Allow pull-up to float if VBUS disconnected */
+ gpio_set_mode(USB_PU_PORT, GPIO_MODE_INPUT,
+ GPIO_CNF_INPUT_FLOAT, USB_PU_PIN);
+ }
+
+ exti_reset_request(USB_VBUS_PIN);
+}
+
+void setup_vbus_irq(void)
+{
+ nvic_set_priority(USB_VBUS_IRQ, IRQ_PRI_USB_VBUS);
+ nvic_enable_irq(USB_VBUS_IRQ);
+
+ gpio_set(USB_VBUS_PORT, USB_VBUS_PIN);
+ gpio_set(USB_PU_PORT, USB_PU_PIN);
+
+ gpio_set_mode(USB_VBUS_PORT, GPIO_MODE_INPUT,
+ GPIO_CNF_INPUT_PULL_UPDOWN, USB_VBUS_PIN);
+
+ /* Configure EXTI for USB VBUS monitor */
+ exti_select_source(USB_VBUS_PIN, USB_VBUS_PORT);
+ exti_set_trigger(USB_VBUS_PIN, EXTI_TRIGGER_BOTH);
+ exti_enable_request(USB_VBUS_PIN);
+
+ exti15_10_isr();
+}
diff --git a/src/platforms/f4discovery/platform.h b/src/platforms/f4discovery/platform.h
new file mode 100644
index 0000000..7d84533
--- /dev/null
+++ b/src/platforms/f4discovery/platform.h
@@ -0,0 +1,198 @@
+/*
+ * This file is part of the Black Magic Debug project.
+ *
+ * Copyright (C) 2011 Black Sphere Technologies Ltd.
+ * Written by Gareth McMullin <gareth@blacksphere.co.nz>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* This file implements the platform specific functions for the STM32
+ * implementation.
+ */
+#ifndef __PLATFORM_H
+#define __PLATFORM_H
+
+#include <libopencm3/stm32/f1/gpio.h>
+#include <libopencm3/usb/usbd.h>
+
+#include <setjmp.h>
+#include <alloca.h>
+
+#include "gdb_packet.h"
+
+#define INLINE_GPIO
+#define CDCACM_PACKET_SIZE 64
+#define PLATFORM_HAS_TRACESWO
+
+extern usbd_device *usbdev;
+#define CDCACM_GDB_ENDPOINT 1
+#define CDCACM_UART_ENDPOINT 3
+
+/* Important pin mappings for STM32 implementation:
+ *
+ * LED0 = PB2 (Yellow LED : Running)
+ * LED1 = PB10 (Yellow LED : Idle)
+ * LED2 = PB11 (Red LED : Error)
+ *
+ * TPWR = RB0 (input) -- analogue on mini design ADC1, ch8
+ * nTRST = PB1
+ * SRST_OUT = PA2
+ * TDI = PA3
+ * TMS = PA4 (input for SWDP)
+ * TCK = PA5
+ * TDO = PA6 (input)
+ * nSRST = PA7 (input)
+ *
+ * USB cable pull-up: PA8
+ * USB VBUS detect: PB13 -- New on mini design.
+ * Enable pull up for compatibility.
+ * Force DFU mode button: PB12
+ */
+
+/* Hardware definitions... */
+#define JTAG_PORT GPIOA
+#define TDI_PORT JTAG_PORT
+#define TMS_PORT JTAG_PORT
+#define TCK_PORT JTAG_PORT
+#define TDO_PORT JTAG_PORT
+#define TDI_PIN GPIO3
+#define TMS_PIN GPIO4
+#define TCK_PIN GPIO5
+#define TDO_PIN GPIO6
+
+#define SWDIO_PORT JTAG_PORT
+#define SWCLK_PORT JTAG_PORT
+#define SWDIO_PIN TMS_PIN
+#define SWCLK_PIN TCK_PIN
+
+#define TRST_PORT GPIOB
+#define TRST_PIN GPIO1
+#define SRST_PORT GPIOA
+#define SRST_PIN GPIO2
+
+#define USB_PU_PORT GPIOA
+#define USB_PU_PIN GPIO8
+
+#define USB_VBUS_PORT GPIOB
+#define USB_VBUS_PIN GPIO13
+#define USB_VBUS_IRQ NVIC_EXTI15_10_IRQ
+
+#define LED_PORT GPIOB
+#define LED_PORT_UART GPIOB
+#define LED_UART GPIO2
+#define LED_IDLE_RUN GPIO10
+#define LED_ERROR GPIO11
+
+#define USB_DRIVER stm32f103_usb_driver
+#define USB_IRQ NVIC_USB_LP_CAN_RX0_IRQ
+#define USB_ISR usb_lp_can_rx0_isr
+/* Interrupt priorities. Low numbers are high priority.
+ * For now USART1 preempts USB which may spin while buffer is drained.
+ * TIM3 is used for traceswo capture and must be highest priority.
+ */
+#define IRQ_PRI_USB (2 << 4)
+#define IRQ_PRI_USBUSART (1 << 4)
+#define IRQ_PRI_USB_VBUS (14 << 4)
+#define IRQ_PRI_TRACE (0 << 4)
+
+#define USBUSART USART1
+#define USBUSART_CR1 USART1_CR1
+#define USBUSART_IRQ NVIC_USART1_IRQ
+#define USBUSART_APB_ENR RCC_APB2ENR
+#define USBUSART_CLK_ENABLE RCC_APB2ENR_USART1EN
+#define USBUSART_PORT GPIOA
+#define USBUSART_TX_PIN GPIO9
+#define USBUSART_ISR usart1_isr
+
+#define TRACE_TIM TIM3
+#define TRACE_TIM_CLK_EN() rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_TIM3EN)
+#define TRACE_IRQ NVIC_TIM3_IRQ
+#define TRACE_ISR tim3_isr
+
+#define DEBUG(...)
+
+extern uint8_t running_status;
+extern volatile uint32_t timeout_counter;
+
+extern jmp_buf fatal_error_jmpbuf;
+
+extern const char *morse_msg;
+
+#define gpio_set_val(port, pin, val) do { \
+ if(val) \
+ gpio_set((port), (pin)); \
+ else \
+ gpio_clear((port), (pin)); \
+} while(0)
+
+#define SET_RUN_STATE(state) {running_status = (state);}
+#define SET_IDLE_STATE(state) {gpio_set_val(LED_PORT, LED_IDLE_RUN, state);}
+#define SET_ERROR_STATE(state) {gpio_set_val(LED_PORT, LED_ERROR, state);}
+
+#define PLATFORM_SET_FATAL_ERROR_RECOVERY() {setjmp(fatal_error_jmpbuf);}
+#define PLATFORM_FATAL_ERROR(error) { \
+ if(running_status) gdb_putpacketz("X1D"); \
+ else gdb_putpacketz("EFF"); \
+ running_status = 0; \
+ target_list_free(); \
+ morse("TARGET LOST.", 1); \
+ longjmp(fatal_error_jmpbuf, (error)); \
+}
+
+int platform_init(void);
+void morse(const char *msg, char repeat);
+const char *platform_target_voltage(void);
+int platform_hwversion(void);
+void platform_delay(uint32_t delay);
+
+/* <cdcacm.c> */
+void cdcacm_init(void);
+/* Returns current usb configuration, or 0 if not configured. */
+int cdcacm_get_config(void);
+int cdcacm_get_dtr(void);
+
+/* <platform.h> */
+void uart_usb_buf_drain(uint8_t ep);
+
+/* Use newlib provided integer only stdio functions */
+#define sscanf siscanf
+#define sprintf siprintf
+#define vasprintf vasiprintf
+
+#ifdef INLINE_GPIO
+static inline void _gpio_set(u32 gpioport, u16 gpios)
+{
+ GPIO_BSRR(gpioport) = gpios;
+}
+#define gpio_set _gpio_set
+
+static inline void _gpio_clear(u32 gpioport, u16 gpios)
+{
+ GPIO_BRR(gpioport) = gpios;
+}
+#define gpio_clear _gpio_clear
+
+static inline u16 _gpio_get(u32 gpioport, u16 gpios)
+{
+ return (u16)GPIO_IDR(gpioport) & gpios;
+}
+#define gpio_get _gpio_get
+#endif
+
+#endif
+
+#define disconnect_usb() gpio_set_mode(USB_PU_PORT, GPIO_MODE_INPUT, 0, USB_PU_PIN);
+void assert_boot_pin(void);
+void setup_vbus_irq(void);
diff --git a/src/platforms/stm32/f4discovery.ld b/src/platforms/stm32/f4discovery.ld
new file mode 100644
index 0000000..b70739c
--- /dev/null
+++ b/src/platforms/stm32/f4discovery.ld
@@ -0,0 +1,28 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Define memory regions. */
+MEMORY
+{
+ rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
+ ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
+}
+
+/* Include the common ld script from libopenstm32. */
+INCLUDE libopencm3_stm32f1.ld