toolchain: Add ESP32S2 config and overlay

Add all necessary changes to allow ESP32S2
toolchain integration.

Overlay URL:
https://github.com/espressif/xtensa-overlays/tree/master/xtensa_esp32s2

Signed-off-by: Sylvio Alves <[email protected]>

Author: sylvioalves

README.md

@@ -13,7 +13,7 @@ The toolchains for the following target architectures are supported:
 - RISC-V (32-bit and 64-bit; RV32I, RV32E, RV64I)
 - x86 (32-bit and 64-bit)
 - Xtensa (sample_controller, intel_apl_adsp, intel_bdw_adsp, intel_byt_adsp,
-  intel_s1000, nxp_imx_adsp, nxp_imx8m_adsp, espressif_esp32)
+  intel_s1000, nxp_imx_adsp, nxp_imx8m_adsp, espressif_esp32, espressif_esp32s2)
 
 The following host tools are available as part of the Zephyr SDK:
 

configs/xtensa-espressif_esp32s2_zephyr-elf.config

@@ -0,0 +1,72 @@
+CT_CONFIG_VERSION="3"
+CT_EXPERIMENTAL=y
+CT_LOCAL_TARBALLS_DIR="${CT_PREFIX:-${HOME}/x-tools}/sources"
+# CT_PREFIX_DIR_RO is not set
+# CT_LOG_PROGRESS_BAR is not set
+CT_TARGET_CFLAGS="-mlongcalls"
+CT_ARCH_XTENSA=y
+CT_XTENSA_CUSTOM=y
+CT_OVERLAY_NAME="espressif_esp32s2"
+CT_OVERLAY_LOCATION="./overlays"
+CT_TARGET_VENDOR="espressif_esp32s2_zephyr"
+CT_BINUTILS_SRC_DEVEL=y
+CT_BINUTILS_DEVEL_URL="https://github.com/zephyrproject-rtos/binutils-gdb.git"
+CT_BINUTILS_DEVEL_REVISION="c7d30a54fc17c1e9d9b1c39c7623222442c63af8"
+CT_NEWLIB_SRC_DEVEL=y
+CT_NEWLIB_DEVEL_URL="https://github.com/zephyrproject-rtos/newlib-cygwin.git"
+CT_NEWLIB_DEVEL_REVISION="2893dbb10f1fe3bf431a26f89a22e12a5020dc02"
+CT_LIBC_NEWLIB_TARGET_CFLAGS="-O2"
+# CT_LIBC_NEWLIB_ENABLE_TARGET_OPTSPACE is not set
+CT_LIBC_NEWLIB_IO_C99FMT=y
+CT_LIBC_NEWLIB_IO_LL=y
+CT_LIBC_NEWLIB_IO_FLOAT=y
+# CT_LIBC_NEWLIB_FSEEK_OPTIMIZATION is not set
+CT_LIBC_NEWLIB_DISABLE_SUPPLIED_SYSCALLS=y
+CT_LIBC_NEWLIB_GLOBAL_ATEXIT=y
+CT_LIBC_NEWLIB_LITE_EXIT=y
+CT_LIBC_NEWLIB_MULTITHREAD=y
+CT_LIBC_NEWLIB_RETARGETABLE_LOCKING=y
+# CT_LIBC_NEWLIB_WIDE_ORIENT is not set
+# CT_LIBC_NEWLIB_NANO_MALLOC is not set
+# CT_LIBC_NEWLIB_NANO_FORMATTED_IO is not set
+CT_LIBC_NEWLIB_EXTRA_SECTIONS=y
+CT_GCC_SRC_DEVEL=y
+CT_GCC_DEVEL_VCS_git=y
+CT_GCC_DEVEL_URL="https://github.com/zephyrproject-rtos/gcc.git"
+CT_GCC_DEVEL_REVISION="8c1f3dcc6eddf3392d77f56c9bed69e5d6446cdf"
+CT_CC_GCC_EXTRA_CONFIG_ARRAY="--with-gnu-ld --with-gnu-as --enable-initfini-array"
+CT_CC_LANG_CXX=y
+CT_DEBUG_GDB=y
+CT_GDB_SRC_DEVEL=y
+CT_GDB_DEVEL_URL="https://github.com/zephyrproject-rtos/binutils-gdb.git"
+CT_GDB_DEVEL_REVISION="76b05e962501d75d995b9f9dd13f837df36b7208"
+CT_GDB_CROSS_PYTHON_BINARY="python3.8"
+CT_GDB_CROSS_BUILD_NO_PYTHON=y
+CT_COMP_LIBS_NEWLIB_NANO=y
+CT_NEWLIB_NANO_SRC_DEVEL=y
+CT_NEWLIB_NANO_DEVEL_URL="https://github.com/zephyrproject-rtos/newlib-cygwin.git"
+CT_NEWLIB_NANO_DEVEL_REVISION="2893dbb10f1fe3bf431a26f89a22e12a5020dc02"
+CT_NEWLIB_NANO_GCC_LIBSTDCXX=y
+CT_NEWLIB_NANO_INSTALL_IN_TARGET=y
+# CT_LIBC_NEWLIB_NANO_IO_C99FMT is not set
+# CT_LIBC_NEWLIB_NANO_IO_LL is not set
+CT_LIBC_NEWLIB_NANO_IO_FLOAT=y
+# CT_LIBC_NEWLIB_NANO_IO_LDBL is not set
+# CT_LIBC_NEWLIB_NANO_IO_POS_ARGS is not set
+CT_LIBC_NEWLIB_NANO_FVWRITE_IN_STREAMIO=y
+# CT_LIBC_NEWLIB_NANO_UNBUF_STREAM_OPT is not set
+# CT_LIBC_NEWLIB_NANO_FSEEK_OPTIMIZATION is not set
+CT_LIBC_NEWLIB_NANO_DISABLE_SUPPLIED_SYSCALLS=y
+# CT_LIBC_NEWLIB_NANO_REGISTER_FINI is not set
+CT_LIBC_NEWLIB_NANO_ATEXIT_DYNAMIC_ALLOC=y
+CT_LIBC_NEWLIB_NANO_GLOBAL_ATEXIT=y
+CT_LIBC_NEWLIB_NANO_LITE_EXIT=y
+CT_LIBC_NEWLIB_NANO_REENT_SMALL=y
+CT_LIBC_NEWLIB_NANO_MULTITHREAD=y
+CT_LIBC_NEWLIB_NANO_RETARGETABLE_LOCKING=y
+CT_LIBC_NEWLIB_NANO_EXTRA_SECTIONS=y
+# CT_LIBC_NEWLIB_NANO_WIDE_ORIENT is not set
+CT_LIBC_NEWLIB_NANO_ENABLE_TARGET_OPTSPACE=y
+# CT_LIBC_NEWLIB_NANO_LTO is not set
+CT_LIBC_NEWLIB_NANO_NANO_MALLOC=y
+CT_LIBC_NEWLIB_NANO_NANO_FORMATTED_IO=y