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ESP8684: introduce a new target esp8684

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This commit is contained in:
Cao Sen Miao 2021-09-23 14:30:50 +08:00
parent 53015490e3
commit 7f5c415401
13 changed files with 267 additions and 2 deletions
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10
Kconfig
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@ -57,6 +57,14 @@ mainmenu "Espressif IoT Development Framework Configuration"
select FREERTOS_UNICORE
select IDF_TARGET_ARCH_RISCV
config IDF_TARGET_ESP8684
bool
default "y" if IDF_TARGET="esp8684"
select FREERTOS_UNICORE
select IDF_TARGET_ARCH_RISCV
select ESPTOOLPY_NO_STUB # remove if ESPTOOL-303
select IDF_ENV_FPGA
config IDF_TARGET_LINUX
bool
default "y" if IDF_TARGET="linux"
@ -68,6 +76,7 @@ mainmenu "Espressif IoT Development Framework Configuration"
default 0x0005 if IDF_TARGET_ESP32C3
default 0x0009 if IDF_TARGET_ESP32S3
default 0x000A if IDF_TARGET_ESP32H2 # ESP32H2-TODO: IDF-3475
default 0x000C if IDF_TARGET_ESP8684
default 0xFFFF
menu "SDK tool configuration"
@ -78,6 +87,7 @@ mainmenu "Espressif IoT Development Framework Configuration"
default "xtensa-esp32s3-elf-" if IDF_TARGET_ESP32S3
default "riscv32-esp-elf-" if IDF_TARGET_ESP32C3
default "riscv32-esp-elf-" if IDF_TARGET_ESP32H2
default "riscv32-esp-elf-" if IDF_TARGET_ESP8684
help
The prefix/path that is used to call the toolchain. The default setting assumes

13
components/esp8684/CMakeLists.txt Normal file
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@ -0,0 +1,13 @@
idf_build_get_property(target IDF_TARGET)
if(NOT "${target}" STREQUAL "esp8684")
return()
endif()
if(NOT BOOTLOADER_BUILD)
# [refactor-todo] propagate these requirements for compatibility
# remove in the future
set(legacy_reqs driver efuse soc)
endif()
idf_component_register(REQUIRES riscv "${legacy_reqs}"
REQUIRED_IDF_TARGETS esp8684)

217
components/esp8684/Kconfig Normal file
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@ -0,0 +1,217 @@
menu "ESP8684-Specific"
visible if IDF_TARGET_ESP8684
choice ESP8684_DEFAULT_CPU_FREQ_MHZ
prompt "CPU frequency"
default ESP8684_DEFAULT_CPU_FREQ_40 if IDF_ENV_FPGA
default ESP8684_DEFAULT_CPU_FREQ_160 if !IDF_ENV_FPGA
help
CPU frequency to be set on application startup.
config ESP8684_DEFAULT_CPU_FREQ_40
bool "40 MHz"
depends on IDF_ENV_FPGA
config ESP8684_DEFAULT_CPU_FREQ_80
bool "80 MHz"
config ESP8684_DEFAULT_CPU_FREQ_160
bool "160 MHz"
endchoice
config ESP8684_DEFAULT_CPU_FREQ_MHZ
int
default 40 if ESP8684_DEFAULT_CPU_FREQ_40
default 80 if ESP8684_DEFAULT_CPU_FREQ_80
default 160 if ESP8684_DEFAULT_CPU_FREQ_160
menu "Cache config"
choice ESP8684_MMU_PAGE_SIZE
# TODO: IDF-3821
prompt "Cache page size"
default ESP8684_MMU_PAGE_SIZE_64KB
help
Cache page size to be set on application startup
config ESP8684_MMU_PAGE_SIZE_16KB
bool "16KB"
config ESP8684_MMU_PAGE_SIZE_32KB
bool "32KB"
config ESP8684_MMU_PAGE_SIZE_64KB
bool "64KB"
endchoice
config ESP8684_INSTRUCTION_CACHE_WRAP
bool
prompt "Instruction cache wrap"
help
If enabled, instruction cache will use wrap mode to read spi flash.
The wrap length is fixed to 32B
config ESP8684_MMU_PAGE_MODE
int
default 0 if ESP8684_MMU_PAGE_SIZE_16KB
default 1 if ESP8684_MMU_PAGE_SIZE_32KB
default 2 if ESP8684_MMU_PAGE_SIZE_64KB
endmenu
config ESP8684_DEBUG_OCDAWARE
bool "Make exception and panic handlers JTAG/OCD aware"
default y
select FREERTOS_DEBUG_OCDAWARE
help
The FreeRTOS panic and unhandled exception handers can detect a JTAG OCD debugger and
instead of panicking, have the debugger stop on the offending instruction.
config ESP8684_DEBUG_STUBS_ENABLE
bool "OpenOCD debug stubs"
default COMPILER_OPTIMIZATION_LEVEL_DEBUG
depends on !ESP8684_TRAX
help
Debug stubs are used by OpenOCD to execute pre-compiled onboard code which does some useful debugging,
e.g. GCOV data dump.
config ESP8684_BROWNOUT_DET
bool "Hardware brownout detect & reset"
default y
help
The ESP8684 has a built-in brownout detector which can detect if the voltage is lower than
a specific value. If this happens, it will reset the chip in order to prevent unintended
behaviour.
choice ESP8684_BROWNOUT_DET_LVL_SEL
prompt "Brownout voltage level"
depends on ESP8684_BROWNOUT_DET
default ESP8684_BROWNOUT_DET_LVL_SEL_7
help
The brownout detector will reset the chip when the supply voltage is approximately
below this level. Note that there may be some variation of brownout voltage level
between each chip.
#The voltage levels here are estimates, more work needs to be done to figure out the exact voltages
#of the brownout threshold levels.
config ESP8684_BROWNOUT_DET_LVL_SEL_7
bool "2.51V"
config ESP8684_BROWNOUT_DET_LVL_SEL_6
bool "2.64V"
config ESP8684_BROWNOUT_DET_LVL_SEL_5
bool "2.76V"
config ESP8684_BROWNOUT_DET_LVL_SEL_4
bool "2.92V"
config ESP8684_BROWNOUT_DET_LVL_SEL_3
bool "3.10V"
config ESP8684_BROWNOUT_DET_LVL_SEL_2
bool "3.27V"
endchoice
config ESP8684_BROWNOUT_DET_LVL
int
default 2 if ESP8684_BROWNOUT_DET_LVL_SEL_2
default 3 if ESP8684_BROWNOUT_DET_LVL_SEL_3
default 4 if ESP8684_BROWNOUT_DET_LVL_SEL_4
default 5 if ESP8684_BROWNOUT_DET_LVL_SEL_5
default 6 if ESP8684_BROWNOUT_DET_LVL_SEL_6
default 7 if ESP8684_BROWNOUT_DET_LVL_SEL_7
choice ESP8684_TIME_SYSCALL
prompt "Timers used for gettimeofday function"
default ESP8684_TIME_SYSCALL_USE_RTC_SYSTIMER
help
This setting defines which hardware timers are used to
implement 'gettimeofday' and 'time' functions in C library.
- If both high-resolution (systimer) and RTC timers are used, timekeeping will
continue in deep sleep. Time will be reported at 1 microsecond
resolution. This is the default, and the recommended option.
- If only high-resolution timer (systimer) is used, gettimeofday will
provide time at microsecond resolution.
Time will not be preserved when going into deep sleep mode.
- If only RTC timer is used, timekeeping will continue in
deep sleep, but time will be measured at 6.(6) microsecond
resolution. Also the gettimeofday function itself may take
longer to run.
- If no timers are used, gettimeofday and time functions
return -1 and set errno to ENOSYS.
- When RTC is used for timekeeping, two RTC_STORE registers are
used to keep time in deep sleep mode.
config ESP8684_TIME_SYSCALL_USE_RTC_SYSTIMER
bool "RTC and high-resolution timer"
select ESP_TIME_FUNCS_USE_RTC_TIMER
select ESP_TIME_FUNCS_USE_ESP_TIMER
config ESP8684_TIME_SYSCALL_USE_RTC
bool "RTC"
select ESP_TIME_FUNCS_USE_RTC_TIMER
config ESP8684_TIME_SYSCALL_USE_SYSTIMER
bool "High-resolution timer"
select ESP_TIME_FUNCS_USE_ESP_TIMER
config ESP8684_TIME_SYSCALL_USE_NONE
bool "None"
select ESP_TIME_FUNCS_USE_NONE
endchoice
choice ESP8684_RTC_CLK_SRC
prompt "RTC clock source"
default ESP8684_RTC_CLK_SRC_INT_RC
help
Choose which clock is used as RTC clock source.
config ESP8684_RTC_CLK_SRC_INT_RC
bool "Internal 150kHz RC oscillator"
config ESP8684_RTC_CLK_SRC_EXT_OSC
bool "External 32kHz oscillator at 32K_XP pin"
config ESP8684_RTC_CLK_SRC_INT_8MD256
bool "Internal 8MHz oscillator, divided by 256 (~32kHz)"
endchoice
config ESP8684_RTC_CLK_CAL_CYCLES
int "Number of cycles for RTC_SLOW_CLK calibration"
default 3000 if ESP8684_RTC_CLK_SRC_EXT_CRYS || ESP8684_RTC_CLK_SRC_EXT_OSC || ESP8684_RTC_CLK_SRC_INT_8MD256
default 1024 if ESP8684_RTC_CLK_SRC_INT_RC
range 0 27000 if ESP8684_RTC_CLK_SRC_EXT_CRYS || ESP8684_RTC_CLK_SRC_EXT_OSC || ESP8684_RTC_CLK_SRC_INT_8MD256
range 0 32766 if ESP8684_RTC_CLK_SRC_INT_RC
help
When the startup code initializes RTC_SLOW_CLK, it can perform
calibration by comparing the RTC_SLOW_CLK frequency with main XTAL
frequency. This option sets the number of RTC_SLOW_CLK cycles measured
by the calibration routine. Higher numbers increase calibration
precision, which may be important for applications which spend a lot of
time in deep sleep. Lower numbers reduce startup time.
When this option is set to 0, clock calibration will not be performed at
startup, and approximate clock frequencies will be assumed:
- 150000 Hz if internal RC oscillator is used as clock source. For this use value 1024.
- 32768 Hz if the 32k crystal oscillator is used. For this use value 3000 or more.
In case more value will help improve the definition of the launch of the crystal.
If the crystal could not start, it will be switched to internal RC.
config ESP8684_NO_BLOBS
bool "No Binary Blobs"
depends on !BT_ENABLED
default n
help
If enabled, this disables the linking of binary libraries in the application build. Note
that after enabling this Wi-Fi/Bluetooth will not work.
config ESP8684_LIGHTSLEEP_GPIO_RESET_WORKAROUND # IDF-3904
bool "light sleep GPIO reset workaround"
default y
select PM_SLP_DISABLE_GPIO if FREERTOS_USE_TICKLESS_IDLE
help
ESP8684 will reset at wake-up if GPIO is received a small electrostatic pulse during
light sleep, with specific condition
- GPIO needs to be configured as input-mode only
- The pin receives a small electrostatic pulse, and reset occurs when the pulse
voltage is higher than 6 V
For GPIO set to input mode only, it is not a good practice to leave it open/floating,
The hardware design needs to controlled it with determined supply or ground voltage
is necessary.
This option provides a software workaround for this issue. Configure to isolate all
GPIO pins in sleep state.
endmenu # ESP8684-Specific

1
components/esp8684/Makefile.projbuild Normal file
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@ -0,0 +1 @@
# ESP8684 is not supported in the GNU Make build system.

4
components/esp8684/component.mk Normal file
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@ -0,0 +1,4 @@
#
# Component Makefile
#
COMPONENT_CONFIG_ONLY := 1

5
components/esp8684/project_include.cmake Normal file
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@ -0,0 +1,5 @@
set(compile_options "-Wno-error=format="
"-nostartfiles"
"-Wno-format")
idf_build_set_property(COMPILE_OPTIONS "${compile_options}" APPEND)

2
components/esptool_py/esptool

@ -1 +1 @@
Subproject commit b082b0ed2d86b3330134c4854a021dfd14c29b08
Subproject commit 3203a6ec493daed22cad5ae48d39c83f77a4dd59

2
tools/cmake/dfu.cmake
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@ -13,6 +13,8 @@ function(__add_dfu_targets)
return()
elseif("${target}" STREQUAL "esp32h2")
return()
elseif("${target}" STREQUAL "esp8684")
return()
elseif("${target}" STREQUAL "linux")
return()
else()

9
tools/cmake/toolchain-esp8684.cmake Normal file
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@ -0,0 +1,9 @@
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_C_COMPILER riscv32-esp-elf-gcc)
set(CMAKE_CXX_COMPILER riscv32-esp-elf-g++)
set(CMAKE_ASM_COMPILER riscv32-esp-elf-gcc)
set(CMAKE_C_FLAGS "-march=rv32imc" CACHE STRING "C Compiler Base Flags")
set(CMAKE_CXX_FLAGS "-march=rv32imc" CACHE STRING "C++ Compiler Base Flags")
set(CMAKE_EXE_LINKER_FLAGS "-nostartfiles -march=rv32imc --specs=nosys.specs" CACHE STRING "Linker Base Flags")

2
tools/cmake/uf2.cmake
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@ -12,6 +12,8 @@ function(__add_uf2_targets)
set(uf2_family_id "0xc47e5767")
elseif("${target}" STREQUAL "esp32h2")
set(uf2_family_id "0xd42ba06c") # ESP32H2-TODO: IDF-3487
elseif("${target}" STREQUAL "esp8684")
set(uf2_family_id "0xd42ba06c")
elseif("${target}" STREQUAL "linux")
return()
else()

1
tools/find_build_apps/common.py
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@ -296,6 +296,7 @@ class BuildSystem:
'ESP32-S3': 'esp32s3',
'ESP32-C3': 'esp32c3',
'ESP32-H2': 'esp32h2',
'ESP8684': 'esp8684',
'Linux': 'linux',
}

2
tools/idf_py_actions/constants.py
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@ -39,4 +39,4 @@ GENERATORS = collections.OrderedDict([
URL_TO_DOC = 'https://docs.espressif.com/projects/esp-idf'
SUPPORTED_TARGETS = ['esp32', 'esp32s2', 'esp32c3', 'esp32s3']
PREVIEW_TARGETS = ['linux', 'esp32h2']
PREVIEW_TARGETS = ['linux', 'esp32h2', 'esp8684']

1
tools/idf_size.py
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@ -83,6 +83,7 @@ class MemRegions(object):
with open(os.path.join(os.path.dirname(__file__), 'idf_size_yaml', target + '_data_info.yaml'), 'r') as stream:
chip_info = (yaml.safe_load(stream))
except FileNotFoundError:
elif target in ['esp32c3', 'esp32h2', 'esp8684']:
raise RuntimeError('Target not detected.')
return sorted([get_mem_reg_def(chip_info, item) for item in chip_info])