Support building an OTA-compatible flash image
Image is suitable for SDK v1.2 bootloader or rBoot.
This commit is contained in:
Angus Gratton
parent
5bbbc1f144
commit
87dc2317f5
2 changed files with 108 additions and 25 deletions
90
common.mk
90
common.mk
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@ -14,38 +14,52 @@
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# BSD Licensed as described in the file LICENSE at top level.
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#
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# This makefile is adapted from the esp-mqtt makefile by @tuanpmt
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# https://github.com/tuanpmt/esp_mqtt, but it has changed significantly
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# https://github.com/tuanpmt/esp_mqtt, but it has changed very significantly
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# since then.
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#
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# assume the 'root' directory (ie top of the tree) is the directory common.mk is in
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ROOT := $(dir $(lastword $(MAKEFILE_LIST)))
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# include optional local overrides at the root level, then in program directory
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#
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# Create either of these files for local system overrides if possible,
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# instead of editing this makefile directly.
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-include $(ROOT)local.mk
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-include local.mk
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ifndef PROGRAM
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$(error "Set the PROGRAM environment variable in your Makefile before including common.mk"
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endif
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# esptool defaults
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ESPTOOL ?= esptool.py
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ESPBAUD ?= 115200
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# Flash size in megabits
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# Valid values are same as for esptool.py - 2m,4m,8m,16m,32m
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FLASH_SIZE ?= 16
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# Output directories to store intermediate compiled files
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# relative to the program directory
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BUILD_DIR ?= $(PROGRAM_DIR)build/
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FW_BASE ?= $(PROGRAM_DIR)firmware/
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# we create two different files for uploading into the flash
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# these are the names and options to generate them
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FW_1 = 0x00000
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FW_2 = 0x40000
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# esptool.py from https://github.com/themadinventor/esptool
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ESPTOOL ?= esptool.py
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# serial port settings for esptool.py
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ESPPORT ?= /dev/ttyUSB0
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ESPBAUD ?= 115200
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# Set OTA to 1 to build an image that supports rBoot OTA bootloader
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#
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# Currently only works with 16mbit or more flash sizes, with 8mbit
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# images for each "slot"
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OTA ?= 0
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ifeq ($(OTA),1)
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# for OTA, we build a "SDK v1.2 bootloader" compatible image where everything is in
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# one file (should work with the v1.2 binary bootloader, and the FOSS rBoot bootloader).
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IMGTOOL ?= esptool2
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# Tell C preprocessor that we're building for OTA
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CPPFLAGS = -DOTA
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endif
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FLAVOR ?= release # or debug
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# Compiler names, etc. assume gdb
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ESPPORT ?= /dev/ttyUSB0
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CROSS ?= xtensa-lx106-elf-
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AR = $(CROSS)ar
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@ -71,8 +85,8 @@ LIBS ?= hal gcc c
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# set to 0 if you want to use the toolchain libc instead of esp-open-rtos newlib
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OWN_LIBC ?= 1
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# Note: this isn't overridable without a not-yet-merged patch to esptool
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ENTRY_SYMBOL = call_user_start
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# Note: you will need a recent esp
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ENTRY_SYMBOL ?= call_user_start
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CFLAGS = -Wall -Werror -Wl,-EL -nostdlib -mlongcalls -mtext-section-literals -std=gnu99 $(CPPFLAGS)
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LDFLAGS = -nostdlib -Wl,--no-check-sections -Wl,-L$(BUILD_DIR)sdklib -Wl,-L$(ROOT)lib -u $(ENTRY_SYMBOL) -Wl,-static -Wl,-Map=build/${PROGRAM}.map
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@ -86,7 +100,7 @@ else
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endif
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GITSHORTREV=\"$(shell cd $(ROOT); git rev-parse --short -q HEAD)\"
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CPPFLAGS += -DGITSHORTREV=$(GITSHORTREV)
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CPPFLAGS += -DGITSHORTREV=$(GITSHORTREV) -DFLASH_SIZE=$(FLASH_SIZE)
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# Linker scripts, all found in $(ROOT)/ld
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LINKER_SCRIPTS = eagle.app.v6.ld eagle.rom.addr.v6.ld
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@ -95,6 +109,10 @@ LINKER_SCRIPTS = eagle.app.v6.ld eagle.rom.addr.v6.ld
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#### no user configurable options below here
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####
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ifndef PROGRAM
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$(error "Set the PROGRAM environment variable in your Makefile before including common.mk"
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endif
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# hacky way to get a single space value
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empty :=
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space := $(empty) $(empty)
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@ -106,15 +124,30 @@ lc = $(subst A,a,$(subst B,b,$(subst C,c,$(subst D,d,$(subst E,e,$(subst F,f,$(s
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PROGRAM_DIR := $(dir $(firstword $(MAKEFILE_LIST)))
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# linker scripts get run through the C preprocessor
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LINKER_SCRIPTS_PROCESSED = $(addprefix $(BUILD_DIR)ld/,$(LINKER_SCRIPTS))
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ifeq ($(OTA),1)
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LD_DIR = $(BUILD_DIR)ld-$(FLASH_SIZE)-ota/
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else
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LD_DIR = $(BUILD_DIR)ld-$(FLASH_SIZE)/
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endif
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LINKER_SCRIPTS_PROCESSED = $(addprefix $(LD_DIR),$(LINKER_SCRIPTS))
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# derive various parts of compiler/linker arguments
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SDK_LIB_ARGS = $(addprefix -l,$(SDK_LIBS))
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LIB_ARGS = $(addprefix -l,$(LIBS))
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PROGRAM_OUT = $(BUILD_DIR)$(PROGRAM).out
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LDFLAGS += $(addprefix -T,$(LINKER_SCRIPTS_PROCESSED))
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FW_FILE_1 = $(addprefix $(FW_BASE),$(FW_1).bin)
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FW_FILE_2 = $(addprefix $(FW_BASE),$(FW_2).bin)
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ifeq ($(OTA),0)
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# for non-OTA, we create two different files for uploading into the flash
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# these are the names and options to generate them
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FW_ADDR_1 = 0x00000
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FW_ADDR_2 = 0x40000
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FW_FILE_1 = $(addprefix $(FW_BASE),$(FW_ADDR_1).bin)
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FW_FILE_2 = $(addprefix $(FW_BASE),$(FW_ADDR_2).bin)
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else
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# for OTA, it's a single monolithic image
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FW_FILE = $(addprefix $(FW_BASE),$(FW_NAME).bin)
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endif
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# Common include directories, shared across all "components"
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# components will add their include directories to this argument
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@ -139,7 +172,7 @@ endif
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.PHONY: all clean debug_print
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all: $(PROGRAM_OUT) $(FW_FILE_1) $(FW_FILE_2)
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all: $(PROGRAM_OUT) $(FW_FILE_1) $(FW_FILE_2) $(FW_FILE)
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# component_compile_rules: Produces compilation rules for a given
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# component
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@ -259,7 +292,7 @@ $(foreach component,$(COMPONENTS), $(eval include $(ROOT)$(component)/component.
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## Run linker scripts via C preprocessor to evaluate macros
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$(BUILD_DIR)ld/%.ld: $(ROOT)ld/%.ld | $(BUILD_DIR)ld
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$(LD_DIR)%.ld: $(ROOT)ld/%.ld | $(LD_DIR)
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$(Q) $(CPP) $(CPPFLAGS) -E -C -P $< > $@
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# final linking step to produce .elf
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@ -267,15 +300,24 @@ $(PROGRAM_OUT): $(COMPONENT_ARS) $(SDK_PROCESSED_LIBS) $(LINKER_SCRIPTS_PROCESSE
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$(vecho) "LD $@"
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$(Q) $(LD) $(LDFLAGS) -Wl,--start-group $(LIB_ARGS) $(SDK_LIB_ARGS) $(COMPONENT_ARS) -Wl,--end-group -o $@
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$(BUILD_DIR) $(FW_BASE) $(BUILD_DIR)sdklib $(BUILD_DIR)ld:
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$(BUILD_DIR) $(FW_BASE) $(BUILD_DIR)sdklib $(LD_DIR):
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$(Q) mkdir -p $@
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$(FW_FILE_1) $(FW_FILE_2): $(PROGRAM_OUT) $(FW_BASE)
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$(vecho) "FW $@"
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$(ESPTOOL) elf2image $< -o $(FW_BASE)
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$(FW_FILE): $(PROGRAM_OUT) $(FW_BASE)
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$(IMGTOOL) -bin -boot2 $(PROGRAM_OUT) $(FW_FILE) .text .data .rodata
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ifeq ($(OTA),0)
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flash: $(FW_FILE_1) $(FW_FILE_2)
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$(ESPTOOL) -p $(ESPPORT) --baud $(ESPBAUD) write_flash $(FW_1) $(FW_FILE_1) $(FW_2) $(FW_FILE_2)
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$(ESPTOOL) -p $(ESPPORT) --baud $(ESPBAUD) write_flash $(FW_ADDR_1) $(FW_FILE_1) $(FW_ADDR_2) $(FW_FILE_2)
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else
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flash: $(FW_FILE)
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$(vecho) "Flashing OTA image slot 0 (bootloader not updated)"
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$(ESPTOOL) -p $(ESPPORT) --baud $(ESPBAUD) write_flash 0x2000 $(FW_FILE)
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endif
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size: $(PROGRAM_OUT)
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$(Q) $(CROSS)size --format=sysv $(PROGRAM_OUT)
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@ -28,13 +28,54 @@ _lock_release_recursive = vPortExitCritical;
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/* SDK compatibility */
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ets_printf = printf;
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/* Evaluate FLASH_SIZE to calculate irom size, etc.
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*/
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#ifndef OTA
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#define IROM0_START 0x40240000
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/* Non-OTA sizes */
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#if FLASH_SIZE == 2 /* 256kB */
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#define IROM0_LEN 0x3C000
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#elif FLASH_SIZE == 4 /* 512kB */
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#define IROM0_LEN 0x7C000
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#elif FLASH_SIZE == 8 /* 1MB */
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#define IROM0_LEN 0xFC000
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#elif FLASH_SIZE == 16 /* 2MB */
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#define IROM0_LEN 0x1FC000
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#elif FLASH_SIZE == 32 /* 4MB */
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#define IROM0_LEN 0x3FC000
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#else /*FLASH_SIZE*/
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#error "Unknown flash size for linker script. Check the FLASH_SIZE variable in your Makefile."
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#endif
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#else /* OTA */
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/* IROM0 becomes an actual "section" of the bootloader image, so we need to leave
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space for the bootloader (0x2000 bytes) and space for the bootloader & section
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headers (0x10 bytes)
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*/
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#define IROM0_START 0x40202010
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/* OTA sizes */
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#if FLASH_SIZE < 16
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#error "OTA support currently requires 16 or 32 megabit flash"
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#elif FLASH_SIZE == 16 || FLASH_SIZE == 32
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/* 1MB irom0 section regardless, minus the space for the bootloader */
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#define IROM0_LEN (0x100000 - 0x2010)
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#else /*FLASH_SIZE*/
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#error "Unknown flash size for linker script. Check the FLASH_SIZE variable in your Makefile."
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#endif
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#endif
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/* Linker Script for ld -N */
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MEMORY
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{
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dport0_0_seg : org = 0x3FF00000, len = 0x10
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dram0_0_seg : org = 0x3FFE8000, len = 0x14000
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iram1_0_seg : org = 0x40100000, len = 0x08000
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irom0_0_seg : org = 0x40240000, len = 0x7C000
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irom0_0_seg : org = IROM0_START, len = IROM0_LEN
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}
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PHDRS
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