esp32h2: add esp32h2 build target

Add esp32h2 support in the following components:
 * Kconfig
 * components/esptool_py
 * components/riscv
 * components/xtensa
 * tools

Kconfig

@@ -11,6 +11,7 @@ mainmenu "Espressif IoT Development Framework Configuration"
     config IDF_ENV_FPGA
         # This option is for internal use only
         bool
+        default "y" if IDF_TARGET="esp32h2" # ESP32H2-TODO: IDF-3378
         option env="IDF_ENV_FPGA"
 
     config IDF_TARGET_ARCH_RISCV
@@ -51,6 +52,12 @@ mainmenu "Espressif IoT Development Framework Configuration"
         select FREERTOS_UNICORE
         select IDF_TARGET_ARCH_RISCV
 
+    config IDF_TARGET_ESP32H2
+        bool
+        default "y" if IDF_TARGET="esp32h2"
+        select FREERTOS_UNICORE
+        select IDF_TARGET_ARCH_RISCV
+
     config IDF_TARGET_LINUX
         bool
         default "y" if IDF_TARGET="linux"
@@ -61,6 +68,7 @@ mainmenu "Espressif IoT Development Framework Configuration"
         default 0x0002 if IDF_TARGET_ESP32S2
         default 0x0005 if IDF_TARGET_ESP32C3
         default 0x0009 if IDF_TARGET_ESP32S3
+        default 0x000A if IDF_TARGET_ESP32H2
         default 0xFFFF
 
     menu "SDK tool configuration"
@@ -70,6 +78,7 @@ mainmenu "Espressif IoT Development Framework Configuration"
             default "xtensa-esp32s2-elf-" if IDF_TARGET_ESP32S2
             default "xtensa-esp32s3-elf-" if IDF_TARGET_ESP32S3
             default "riscv32-esp-elf-" if IDF_TARGET_ESP32C3
+            default "riscv32-esp-elf-" if IDF_TARGET_ESP32H2
 
             help
                 The prefix/path that is used to call the toolchain. The default setting assumes

components/esptool_py/Kconfig.projbuild

@@ -56,6 +56,7 @@ menu "Serial flasher config"
 
     config ESPTOOLPY_NO_STUB
         bool "Disable download stub"
+        default "y" if IDF_TARGET_ESP32H2 # ESP32H2-TODO: IDF-3378
         default "n"
         help
             The flasher tool sends a precompiled download stub first by default. That stub allows things
@@ -117,7 +118,7 @@ menu "Serial flasher config"
 
     choice ESPTOOLPY_FLASHFREQ
         prompt "Flash SPI speed"
-        default ESPTOOLPY_FLASHFREQ_40M if IDF_TARGET_ESP32
+        default ESPTOOLPY_FLASHFREQ_40M if IDF_TARGET_ESP32 || IDF_TARGET_ESP32H2
         default ESPTOOLPY_FLASHFREQ_80M
         help
             The SPI flash frequency to be used.

components/esptool_py/esptool

@@ -1 +1 @@
-Subproject commit 1c9fe7059738ecd8e2b77c66cf7e2be73e566c16
+Subproject commit 46ead46242c57a0b0b137976dc55550225faefec

components/riscv/CMakeLists.txt

@@ -1,6 +1,6 @@
 idf_build_get_property(target IDF_TARGET)
 
-if(NOT "${target}" STREQUAL "esp32c3")
+if(NOT "${target}" STREQUAL "esp32c3" AND NOT "${target}" STREQUAL "esp32h2" )
     return()
 endif()
 

components/xtensa/CMakeLists.txt

@@ -1,6 +1,6 @@
 idf_build_get_property(target IDF_TARGET)
 
-if("${target}" STREQUAL "esp32c3")
+if("${target}" STREQUAL "esp32c3" OR "${target}" STREQUAL "esp32h2")
     return()
 endif()
 

tools/cmake/dfu.cmake

@@ -11,6 +11,8 @@ function(__add_dfu_targets)
         set(dfu_pid "6")
     elseif("${target}" STREQUAL "esp32c3")
         return()
+    elseif("${target}" STREQUAL "esp32h2")
+        return()
     elseif("${target}" STREQUAL "linux")
         return()
     else()

tools/cmake/toolchain-esp32h2.cmake

@@ -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")

tools/cmake/uf2.cmake

@@ -10,6 +10,8 @@ function(__add_uf2_targets)
         set(uf2_family_id "0xd42ba06c")
     elseif("${target}" STREQUAL "esp32s3")
         set(uf2_family_id "0xc47e5767")
+    elseif("${target}" STREQUAL "esp32h2")
+        set(uf2_family_id "0xd42ba06c")
     elseif("${target}" STREQUAL "linux")
         return()
     else()

tools/find_build_apps/common.py

@@ -295,6 +295,7 @@ class BuildSystem:
         'ESP32-S2': 'esp32s2',
         'ESP32-S3': 'esp32s3',
         'ESP32-C3': 'esp32c3',
+        'ESP32-H2': 'esp32h2',
         'Linux': 'linux',
     }
 

tools/idf_py_actions/constants.py

@@ -36,6 +36,6 @@ GENERATORS = collections.OrderedDict([
     })
 ])
 
-SUPPORTED_TARGETS = ['esp32', 'esp32s2', 'esp32c3', 'esp32s3']
+SUPPORTED_TARGETS = ['esp32', 'esp32s2', 'esp32c3', 'esp32s3', 'esp32h2']
 
 PREVIEW_TARGETS = ['linux']

tools/idf_size.py

@@ -139,6 +139,17 @@ class MemRegions(object):
                 # Used by cache
                 MemRegDef(0x4037C000, 0x4000, MemRegions.IRAM_ID, 0),
             ])
+        elif target == 'esp32h2':
+            return sorted([
+                MemRegDef(0x3FC80000, 0x60000, MemRegions.DIRAM_ID, 0x40380000),
+
+                # MemRegDef(0x3FC80000, 0x20000, MemRegions.DIRAM_ID, 0x40380000),
+                # MemRegDef(0x3FCA0000, 0x20000, MemRegions.DIRAM_ID, 0x403A0000),
+                # MemRegDef(0x3FCC0000, 0x20000, MemRegions.DIRAM_ID, 0x403C0000),
+
+                # Used by cache
+                MemRegDef(0x4037C000, 0x4000, MemRegions.IRAM_ID, 0),
+            ])
         else:
             return None