diff --git a/src/platforms/f4discovery/Makefile.inc b/src/platforms/f4discovery/Makefile.inc new file mode 100644 index 00000000..4c56bd68 --- /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 00000000..0e81ba43 --- /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 + * + * 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 . + */ + +/* This file implements the platform specific functions for the STM32 + * implementation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "platform.h" +#include "jtag_scan.h" +#include + +#include + +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 00000000..7d84533f --- /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 + * + * 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 . + */ + +/* This file implements the platform specific functions for the STM32 + * implementation. + */ +#ifndef __PLATFORM_H +#define __PLATFORM_H + +#include +#include + +#include +#include + +#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); + +/* */ +void cdcacm_init(void); +/* Returns current usb configuration, or 0 if not configured. */ +int cdcacm_get_config(void); +int cdcacm_get_dtr(void); + +/* */ +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 00000000..b70739cd --- /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 + * + * 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 . + */ + +/* 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