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Implement bootloader #137 (#142)

Browse Source 
* Boot: switch to DFU routines. Implements #132 part 1 of 2.

* Boot: boot to DFU shortcut, hard reset USB on each boot. Implements #132 part 2 of 2.

* Deploy scripts: fix path for deploy dfu.

* Bootloader: initial version. Target_f2: rebase, update deployment scripts.

* Bootloader: cleanup, refactor switch2 proc. Readme,wiki: document bootloader.

* Wiki: deploy symlinks as files, bootloader info.

* Target_f2: valid flash size in linker script.

* Github CI: bootloader build and artifacts.

* Bootloader: rename platforms to targets.

* Bootloader: change dfu/os colors.

* disable set -e

* lint code

* add bootloader testing page

Co-authored-by: Aleksandr Kutuzov <aku@plooks.com>
Co-authored-by: aanper <mail@s3f.ru>
This commit is contained in:
あく 2020-10-01 02:05:04 +03:00 committed by GitHub
parent 110a9efc3c
commit 805bb886c0
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
22 changed files with 691 additions and 16 deletions
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15
.github/workflows/ci.yml vendored
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@ -63,3 +63,18 @@ jobs:
target_f2/build/target_prod.bin
target_f2/build/target_prod.hex
if-no-files-found: error
- name: Build bootloader in docker
uses: ./.github/actions/docker
with:
run: make -C bootloader
- name: Publish bootloader artifacts
uses: actions/upload-artifact@v2
with:
name: bootloader
path: |
bootloader/.obj/bootloader.elf
bootloader/.obj/bootloader.bin
bootloader/.obj/bootloader.hex
if-no-files-found: error

2
.gitignore vendored
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@ -1,4 +1,6 @@
.idea/
.obj/
target_lo/build/
target_*/build/
bindings/

97
bootloader/Makefile Normal file
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@ -0,0 +1,97 @@
PROJECT = bootloader
SRC_DIR = src
OBJ_DIR = .obj
ASM_SOURCES = $(wildcard $(SRC_DIR)/*.s)
C_SOURCES = $(wildcard $(SRC_DIR)/*.c)
CPP_SOURCES = $(wildcard $(SRC_DIR)/*.cpp)
#
TARGET ?= f2
TARGET_DIR = targets/$(TARGET)
include $(TARGET_DIR)/target.mk
CFLAGS += -Itargets/include
C_SOURCES += $(wildcard $(TARGET_DIR)/*.c)
DEBUG ?= 1
ifeq ($(DEBUG), 1)
CFLAGS += -DDEBUG -g
else
CFLAGS += -DNDEBUG -Os
endif
PREFIX = arm-none-eabi-
ifdef GCC_PATH
CC = $(GCC_PATH)/$(PREFIX)gcc
CPP = $(GCC_PATH)/$(PREFIX)g++
AS = $(GCC_PATH)/$(PREFIX)gcc -x assembler-with-cpp
CP = $(GCC_PATH)/$(PREFIX)objcopy
SZ = $(GCC_PATH)/$(PREFIX)size
else
CC = $(PREFIX)gcc
CPP = $(PREFIX)g++
AS = $(PREFIX)gcc -x assembler-with-cpp
CP = $(PREFIX)objcopy
SZ = $(PREFIX)size
endif
HEX = $(CP) -O ihex
BIN = $(CP) -O binary -S
$(shell mkdir -p $(OBJ_DIR))
OBJECTS = $(addprefix $(OBJ_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
vpath %.c $(sort $(dir $(C_SOURCES)))
OBJECTS += $(addprefix $(OBJ_DIR)/,$(notdir $(ASM_SOURCES:.s=.o)))
vpath %.s $(sort $(dir $(ASM_SOURCES)))
OBJECTS += $(addprefix $(OBJ_DIR)/,$(notdir $(CPP_SOURCES:.cpp=.o)))
vpath %.cpp $(sort $(dir $(CPP_SOURCES)))
DEPS = $(OBJECTS:.o=.d)
CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"
CPPFLAGS = -fno-threadsafe-statics
all: $(OBJ_DIR)/$(PROJECT).elf $(OBJ_DIR)/$(PROJECT).hex $(OBJ_DIR)/$(PROJECT).bin
$(OBJ_DIR)/$(PROJECT).elf: $(OBJECTS)
@echo "\tLD\t" $@
@$(CC) $(LDFLAGS) $(OBJECTS) -o $@
$(SZ) $@
$(OBJ_DIR)/$(PROJECT).hex: $(OBJ_DIR)/$(PROJECT).elf
@echo "\tHEX\t" $@
@$(HEX) $< $@
$(OBJ_DIR)/$(PROJECT).bin: $(OBJ_DIR)/$(PROJECT).elf
@echo "\tBIN\t" $@
@$(BIN) $< $@
$(OBJ_DIR)/%.o: %.c
@echo "\tCC\t" $@
@$(CC) $(CFLAGS) -c $< -o $@
$(OBJ_DIR)/%.o: %.s
@echo "\tASM\t" $@
@$(AS) $(CFLAGS) -c $< -o $@
$(OBJ_DIR)/%.o: %.cpp
@echo "\tCPP\t" $@
@$(CPP) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
flash: $(OBJ_DIR)/$(PROJECT).bin
st-flash --reset write $(OBJ_DIR)/$(PROJECT).bin $(BOOT_ADDRESS)
debug:
st-util & arm-none-eabi-gdb -ex "PROJECT extended-remote 127.0.0.1:4242" $(OBJ_DIR)/$(PROJECT).elf
clean:
$(RM) $(OBJ_DIR)/*
zz: | clean flash
zzz: | clean flash debug
-include $(DEPS)

47
bootloader/ReadMe.md Normal file
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@ -0,0 +1,47 @@
# Flipper bootloader
What it does?
- [+] Hardware initialization
- [ ] Firmware CRC check
- [+] Firmware update
- [ ] Interactive UI
- [+] Boot process LED indicators
- [ ] FS check
- [ ] Recovery mode
# Targets
| Name | Bootloader | Firmware | Reset | DFU |
| | Address | Address | Combo | Combo |
---------------------------------------------------------------------
| f2 | 0x08000000 | 0x00008000 | L+R | L+R, hold R |
Target independend code and headers in `src`and `target/include` folders.
# Building
## With dev docker image:
`docker-compose exec dev make -C bootloader`
## With toolchain installed in path:
`make`
## Build Options
- `DEBUG` - 0/1 - enable or disable debug build. Default is 1.
- `TARGET` - string - target to build. Default is `f2`.
# Flashing
Using stlink(st-flash):
`make flash`
# Debug
Using stlink (st-util + gdb):
`make debug`

14
bootloader/src/main.c Normal file
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@ -0,0 +1,14 @@
#include "target.h"
int main() {
// Initialize hardware
target_init();
// Check if dfu requested
if(target_is_dfu_requested()) {
target_switch2dfu();
}
// Switch to OS
target_switch2os();
// Never should get here
return 0;
}

204
bootloader/targets/f2/STM32L476RGTx_FLASH.ld Normal file
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@ -0,0 +1,204 @@
/*
******************************************************************************
**
** File : LinkerScript.ld
**
** Author : Auto-generated by System Workbench for STM32
**
** Abstract : Linker script for STM32L476RGTx series
** 1024Kbytes FLASH and 128Kbytes RAM
**
** Set heap size, stack size and stack location according
** to application requirements.
**
** Set memory bank area and size if external memory is used.
**
** Target : STMicroelectronics STM32
**
** Distribution: The file is distributed “as is,” without any warranty
** of any kind.
**
*****************************************************************************
** @attention
**
** <h2><center>&copy; COPYRIGHT(c) 2019 STMicroelectronics</center></h2>
**
** Redistribution and use in source and binary forms, with or without modification,
** are permitted provided that the following conditions are met:
** 1. Redistributions of source code must retain the above copyright notice,
** this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright notice,
** this list of conditions and the following disclaimer in the documentation
** and/or other materials provided with the distribution.
** 3. Neither the name of STMicroelectronics nor the names of its contributors
** may be used to endorse or promote products derived from this software
** without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
*****************************************************************************
*/
/* Entry Point */
ENTRY(Reset_Handler)
/* Highest address of the user mode stack */
_estack = 0x20018000; /* end of RAM */
/* Generate a link error if heap and stack don't fit into RAM */
_Min_Heap_Size = 0x200; /* required amount of heap */
_Min_Stack_Size = 0x400; /* required amount of stack */
/* Specify the memory areas */
MEMORY
{
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 96K
RAM2 (xrw) : ORIGIN = 0x10000000, LENGTH = 32K
FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 1024K
}
/* Define output sections */
SECTIONS
{
/* The startup code goes first into FLASH */
.isr_vector :
{
. = ALIGN(8);
KEEP(*(.isr_vector)) /* Startup code */
. = ALIGN(8);
} >FLASH
/* The program code and other data goes into FLASH */
.text :
{
. = ALIGN(8);
*(.text) /* .text sections (code) */
*(.text*) /* .text* sections (code) */
*(.glue_7) /* glue arm to thumb code */
*(.glue_7t) /* glue thumb to arm code */
*(.eh_frame)
KEEP (*(.init))
KEEP (*(.fini))
. = ALIGN(8);
_etext = .; /* define a global symbols at end of code */
} >FLASH
/* Constant data goes into FLASH */
.rodata :
{
. = ALIGN(8);
*(.rodata) /* .rodata sections (constants, strings, etc.) */
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
. = ALIGN(8);
} >FLASH
.ARM.extab :
{
. = ALIGN(8);
*(.ARM.extab* .gnu.linkonce.armextab.*)
. = ALIGN(8);
} >FLASH
.ARM : {
. = ALIGN(8);
__exidx_start = .;
*(.ARM.exidx*)
__exidx_end = .;
. = ALIGN(8);
} >FLASH
.preinit_array :
{
. = ALIGN(8);
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP (*(.preinit_array*))
PROVIDE_HIDDEN (__preinit_array_end = .);
. = ALIGN(8);
} >FLASH
.init_array :
{
. = ALIGN(8);
PROVIDE_HIDDEN (__init_array_start = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array*))
PROVIDE_HIDDEN (__init_array_end = .);
. = ALIGN(8);
} >FLASH
.fini_array :
{
. = ALIGN(8);
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP (*(SORT(.fini_array.*)))
KEEP (*(.fini_array*))
PROVIDE_HIDDEN (__fini_array_end = .);
. = ALIGN(8);
} >FLASH
/* used by the startup to initialize data */
_sidata = LOADADDR(.data);
/* Initialized data sections goes into RAM, load LMA copy after code */
.data :
{
. = ALIGN(8);
_sdata = .; /* create a global symbol at data start */
*(.data) /* .data sections */
*(.data*) /* .data* sections */
. = ALIGN(8);
_edata = .; /* define a global symbol at data end */
} >RAM AT> FLASH
/* Uninitialized data section */
. = ALIGN(4);
.bss :
{
/* This is used by the startup in order to initialize the .bss secion */
_sbss = .; /* define a global symbol at bss start */
__bss_start__ = _sbss;
*(.bss)
*(.bss*)
*(COMMON)
. = ALIGN(4);
_ebss = .; /* define a global symbol at bss end */
__bss_end__ = _ebss;
} >RAM
/* User_heap_stack section, used to check that there is enough RAM left */
._user_heap_stack :
{
. = ALIGN(8);
PROVIDE ( end = . );
PROVIDE ( _end = . );
. = . + _Min_Heap_Size;
. = . + _Min_Stack_Size;
. = ALIGN(8);
} >RAM
/* Remove information from the standard libraries */
/DISCARD/ :
{
libc.a ( * )
libm.a ( * )
libgcc.a ( * )
}
.ARM.attributes 0 : { *(.ARM.attributes) }
}

154
bootloader/targets/f2/target.c Normal file
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@ -0,0 +1,154 @@
#include <target.h>
#include <stm32l4xx.h>
#include <stm32l4xx_ll_system.h>
#include <stm32l4xx_ll_bus.h>
#include <stm32l4xx_ll_utils.h>
#include <stm32l4xx_ll_rcc.h>
#include <stm32l4xx_ll_rtc.h>
#include <stm32l4xx_ll_pwr.h>
#include <stm32l4xx_ll_gpio.h>
// Boot request enum
#define BOOT_REQUEST_NONE 0x00000000
#define BOOT_REQUEST_DFU 0xDF00B000
// Boot to DFU pin
#define BOOT_DFU_PORT GPIOB
#define BOOT_DFU_PIN LL_GPIO_PIN_8
// LCD backlight
#define BOOT_LCD_BL_PORT GPIOB
#define BOOT_LCD_BL_PIN LL_GPIO_PIN_6
// LEDs
#define LED_RED_PORT GPIOA
#define LED_RED_PIN LL_GPIO_PIN_8
#define LED_GREEN_PORT GPIOB
#define LED_GREEN_PIN LL_GPIO_PIN_14
#define LED_BLUE_PORT GPIOB
#define LED_BLUE_PIN LL_GPIO_PIN_1
// USB pins
#define BOOT_USB_PORT GPIOA
#define BOOT_USB_DM_PIN LL_GPIO_PIN_11
#define BOOT_USB_DP_PIN LL_GPIO_PIN_12
#define BOOT_USB_PIN (BOOT_USB_DM_PIN | BOOT_USB_DP_PIN)
void clock_init() {
LL_FLASH_SetLatency(LL_FLASH_LATENCY_4);
LL_RCC_MSI_Enable();
while(LL_RCC_MSI_IsReady() != 1) {
}
/* Main PLL configuration and activation */
LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_MSI, LL_RCC_PLLM_DIV_1, 40, LL_RCC_PLLR_DIV_2);
LL_RCC_PLL_Enable();
LL_RCC_PLL_EnableDomain_SYS();
while(LL_RCC_PLL_IsReady() != 1) {
}
/* Sysclk activation on the main PLL */
LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL) {
};
/* Set APB1 & APB2 prescaler*/
LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);
/* Set systick to 1ms in using frequency set to 80MHz */
/* This frequency can be calculated through LL RCC macro */
/* ex: __LL_RCC_CALC_PLLCLK_FREQ(__LL_RCC_CALC_MSI_FREQ(LL_RCC_MSIRANGESEL_RUN, LL_RCC_MSIRANGE_6),
LL_RCC_PLLM_DIV_1, 40, LL_RCC_PLLR_DIV_2)*/
LL_Init1msTick(80000000);
/* Update CMSIS variable (which can be updated also through SystemCoreClockUpdate function) */
LL_SetSystemCoreClock(80000000);
}
void gpio_init() {
LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOB);
// USB D+
LL_GPIO_SetPinMode(BOOT_USB_PORT, BOOT_USB_DP_PIN, LL_GPIO_MODE_OUTPUT);
LL_GPIO_SetPinSpeed(BOOT_USB_PORT, BOOT_USB_DP_PIN, LL_GPIO_SPEED_FREQ_VERY_HIGH);
LL_GPIO_SetPinOutputType(BOOT_USB_PORT, BOOT_USB_DP_PIN, LL_GPIO_OUTPUT_OPENDRAIN);
// USB D-
LL_GPIO_SetPinMode(BOOT_USB_PORT, BOOT_USB_DM_PIN, LL_GPIO_MODE_OUTPUT);
LL_GPIO_SetPinSpeed(BOOT_USB_PORT, BOOT_USB_DM_PIN, LL_GPIO_SPEED_FREQ_VERY_HIGH);
LL_GPIO_SetPinOutputType(BOOT_USB_PORT, BOOT_USB_DM_PIN, LL_GPIO_OUTPUT_OPENDRAIN);
// Button: back
LL_GPIO_SetPinMode(BOOT_DFU_PORT, BOOT_DFU_PIN, LL_GPIO_MODE_INPUT);
LL_GPIO_SetPinPull(BOOT_DFU_PORT, BOOT_DFU_PIN, LL_GPIO_PULL_DOWN);
// Display backlight
LL_GPIO_SetPinMode(BOOT_LCD_BL_PORT, BOOT_LCD_BL_PIN, LL_GPIO_MODE_OUTPUT);
LL_GPIO_SetPinSpeed(BOOT_LCD_BL_PORT, BOOT_LCD_BL_PIN, LL_GPIO_SPEED_FREQ_LOW);
LL_GPIO_SetPinOutputType(BOOT_LCD_BL_PORT, BOOT_LCD_BL_PIN, LL_GPIO_OUTPUT_PUSHPULL);
// LEDs
LL_GPIO_SetPinMode(LED_RED_PORT, LED_RED_PIN, LL_GPIO_MODE_OUTPUT);
LL_GPIO_SetPinOutputType(LED_RED_PORT, LED_RED_PIN, LL_GPIO_OUTPUT_OPENDRAIN);
LL_GPIO_SetOutputPin(LED_RED_PORT, LED_RED_PIN);
LL_GPIO_SetPinMode(LED_GREEN_PORT, LED_GREEN_PIN, LL_GPIO_MODE_OUTPUT);
LL_GPIO_SetPinOutputType(LED_GREEN_PORT, LED_GREEN_PIN, LL_GPIO_OUTPUT_OPENDRAIN);
LL_GPIO_SetOutputPin(LED_GREEN_PORT, LED_GREEN_PIN);
LL_GPIO_SetPinMode(LED_BLUE_PORT, LED_BLUE_PIN, LL_GPIO_MODE_OUTPUT);
LL_GPIO_SetPinOutputType(LED_BLUE_PORT, LED_BLUE_PIN, LL_GPIO_OUTPUT_OPENDRAIN);
LL_GPIO_SetOutputPin(LED_BLUE_PORT, LED_BLUE_PIN);
}
void rtc_init() {
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
LL_PWR_EnableBkUpAccess();
LL_RCC_EnableRTC();
}
void lcd_backlight_on() {
LL_GPIO_SetOutputPin(BOOT_LCD_BL_PORT, BOOT_LCD_BL_PIN);
}
void usb_wire_reset() {
LL_GPIO_ResetOutputPin(BOOT_USB_PORT, BOOT_USB_PIN);
LL_mDelay(10);
LL_GPIO_SetOutputPin(BOOT_USB_PORT, BOOT_USB_PIN);
}
void target_init() {
clock_init();
rtc_init();
gpio_init();
usb_wire_reset();
}
int target_is_dfu_requested() {
if(LL_RTC_BAK_GetRegister(RTC, LL_RTC_BKP_DR0) == BOOT_REQUEST_DFU) {
LL_RTC_BAK_SetRegister(RTC, LL_RTC_BKP_DR0, BOOT_REQUEST_NONE);
return 1;
}
if(LL_GPIO_IsInputPinSet(BOOT_DFU_PORT, BOOT_DFU_PIN)) {
return 1;
}
return 0;
}
void target_switch(void* offset) {
asm volatile("ldr r3, [%0] \n"
"msr msp, r3 \n"
"ldr r3, [%1] \n"
"mov pc, r3 \n"
:
: "r"(offset), "r"(offset + 0x4)
: "r3");
}
void target_switch2dfu() {
LL_GPIO_ResetOutputPin(LED_BLUE_PORT, LED_BLUE_PIN);
// Remap memory to system bootloader
LL_SYSCFG_SetRemapMemory(LL_SYSCFG_REMAP_SYSTEMFLASH);
target_switch(0x0);
}
void target_switch2os() {
LL_GPIO_ResetOutputPin(LED_RED_PORT, LED_RED_PIN);
SCB->VTOR = OS_OFFSET;
target_switch((void*)(BOOT_ADDRESS + OS_OFFSET));
}

21
bootloader/targets/f2/target.mk Normal file
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@ -0,0 +1,21 @@
BOOT_ADDRESS = 0x08000000
OS_OFFSET = 0x00008000
BOOT_CFLAGS = -DBOOT_ADDRESS=$(BOOT_ADDRESS) -DOS_OFFSET=$(OS_OFFSET)
MCU_FLAGS = -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard
CFLAGS += $(MCU_FLAGS) $(BOOT_CFLAGS) -DSTM32L4R7xx -Wall -fdata-sections -ffunction-sections
LDFLAGS += $(MCU_FLAGS) -specs=nosys.specs -specs=nano.specs
CUBE_DIR = ../target_f2
CUBE_CMSIS_DIR = $(CUBE_DIR)/Drivers/CMSIS
CUBE_HAL_DIR = $(CUBE_DIR)/Drivers/STM32L4xx_HAL_Driver
ASM_SOURCES += $(CUBE_CMSIS_DIR)/Device/ST/STM32L4xx/Source/Templates/gcc/startup_stm32l476xx.s
C_SOURCES += $(CUBE_CMSIS_DIR)/Device/ST/STM32L4xx/Source/Templates/system_stm32l4xx.c
C_SOURCES += $(CUBE_HAL_DIR)/Src/stm32l4xx_ll_utils.c
CFLAGS += -I$(CUBE_CMSIS_DIR)/Include
CFLAGS += -I$(CUBE_CMSIS_DIR)/Device/ST/STM32L4xx/Include
CFLAGS += -I$(CUBE_HAL_DIR)/Inc
LDFLAGS += -Ttargets/f2/STM32L476RGTx_FLASH.ld

25
bootloader/targets/include/target.h Normal file
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@ -0,0 +1,25 @@
#ifndef TARGET_H
#define TARGET_H
/*
* Initialize hardware
*/
void target_init();
/*
* Check if dfu mode requested
* @return 1 if dfu mode requested, 0 if not
*/
int target_is_dfu_requested();
/*
* Switch to dfu mode
*/
void target_switch2dfu();
/*
* Switch to OS
*/
void target_switch2os();
#endif

15
core/boot.h Normal file
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@ -0,0 +1,15 @@
/*
Flipper devices inc.
Bootloader API, must be implemented by target
*/
#ifndef __BOOT_H
#define __BOOT_H
/*
* @brief Request DFU and reboot
*/
void boot_restart_in_dfu();
#endif

2
docker/syntax_check.sh
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@ -1,6 +1,6 @@
#!/usr/bin/env bash
set -e
# set -e
CLANG_FORMAT_BIN="/usr/bin/clang-format-10"
PATH="$HOME/.cargo/bin:${PATH}"

1
target_f2/Makefile
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@ -44,6 +44,7 @@ C_DEFS =
C_SOURCES += \
Src/main.c \
Src/boot.c \
Src/freertos.c \
Src/stm32l4xx_it.c \
Src/stm32l4xx_hal_msp.c \

2
target_f2/STM32L476RGTx_FLASH.ld
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@ -63,7 +63,7 @@ MEMORY
{
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 96K
RAM2 (xrw) : ORIGIN = 0x10000000, LENGTH = 32K
FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 1024K
FLASH (rx) : ORIGIN = 0x08008000, LENGTH = 992K
}
/* Define output sections */

19
target_f2/Src/boot.c Normal file
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@ -0,0 +1,19 @@
#include "boot.h"
#include "stm32l4xx_ll_bus.h"
#include "stm32l4xx_ll_rcc.h"
#include "stm32l4xx_ll_rtc.h"
#include "stm32l4xx_ll_pwr.h"
#define BOOT_REQUEST_DFU 0xDF00B000
void boot_restart_in_dfu() {
// Request DFU on boot
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
LL_PWR_EnableBkUpAccess();
// Enable RTC
LL_RCC_EnableRTC();
// Write backup registry
LL_RTC_BAK_SetRegister(RTC, LL_RTC_BKP_DR0, BOOT_REQUEST_DFU);
// Reset
NVIC_SystemReset();
}

2
target_f2/Src/main.c
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@ -20,6 +20,7 @@
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "boot.h"
#include "cmsis_os.h"
#include "usb_device.h"
@ -89,7 +90,6 @@ void StartDefaultTask(void const* argument);
*/
int main(void) {
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/

2
target_f2/Src/system_stm32l4xx.c
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@ -123,6 +123,8 @@
/*!< Uncomment the following line if you need to relocate your vector Table in
Internal SRAM. */
/* #define VECT_TAB_SRAM */
#define VECT_TAB_OFFSET \
0x8000 /*!< Vector Table base offset field.
#define VECT_TAB_OFFSET \
0x00 /*!< Vector Table base offset field.
This value must be a multiple of 0x200. */

3
target_f2/deploy-dfu.sh Executable file
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@ -0,0 +1,3 @@
#!/bin/bash
dfu-util -D `dirname "$0"`/build/target_prod.bin -a 0 -s 0x08008000

4
target_f2/deploy.sh
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@ -1 +1,3 @@
st-flash write `dirname "$0"`/build/target_prod.bin 0x08000000
#!/bin/bash
st-flash --reset write `dirname "$0"`/build/target_prod.bin 0x08008000

2
wiki-deploy.sh
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@ -1,4 +1,4 @@
rm -rf flipperzero-firmware-community.wiki/*
cp -r wiki/* flipperzero-firmware-community.wiki/
cp -Hr wiki/* flipperzero-firmware-community.wiki/
cp README.md flipperzero-firmware-community.wiki/Home.md
cd flipperzero-firmware-community.wiki && git add * && git commit -a -m "deployed by script" && git push -f

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# Bootloader test
1. # Clean flash
2. `make -C bootloader flash` # Load bootloader
3. # reboot device
1. Press right
2. Press left
3. Wait 0.1 s
4. Release left
5. Release right
4. Wait 0.5 s
5. # Expect no FW
1. Expect: no uart welcome message
2. Expect: red led on
3. Expect: no USB
6. # reboot device and go to DFU
1. Press left
2. Press right
3. Wait 0.1 s
4. Release left
5. Wait 0.5 s
6. Release right
7. Wait 0.5 s
8. # Expect DFU
1. Expect: blue led on
2. Expect: USB: DFU
9. `target_f2/deploy-dfu.sh` # load FW
10. # reboot device
1. Press right
2. Press left
3. Wait 0.1 s
4. Release left
5. Release right
11. Wait 0.5 s
12. # Expect FW
1. Expect: uart welcome message
2. Expect: USB Flipper CDC

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bootloader/ReadMe.md

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wiki/fw/Firmware.md
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@ -8,6 +8,7 @@ _Overview of Flipper firmware architecture:_
.
├── applications # Flipper applications
│   └── furi_test # Test app for checking and demonstrating FURI func
├── bootloader # Firmware bootloader, used for `target_f2` and newer
├── core # Main feature like OS, HAL (target-independed)
├── target_f1 # Target-depended code for target F1
│   ├── Drivers # STM HAL drivers
@ -48,6 +49,21 @@ Some flipper-specific implementation of gpio/HAL:
Files location: `/app/app_hal.[ch]`
# Bootloader
For production targets('target_f2' and newer) bootloader must be flashed first.
Detailed instruction on how to compile and flash you can find in `bootloader` fodler.
Production version will have following features:
- Hardware initialization
- Firmware CRC check
- Firmware update
- Interactive UI
- Boot process LED indicators
- FS check
- Recovery mode
# OS
We use FreeRTOS 10.0.1 for sheduling. Documentation available on [freertos.org](https://www.freertos.org/a00106.html).