esp32: Update to latest ESP IDF.

This update requires the xtensa-esp32-elf to be upgraded to the latest
version, 1.22.0-73-ge28a011-5.2.0.

ports/esp32/Makefile

@@ -29,7 +29,7 @@ ESPCOMP = $(ESPIDF)/components
 ESPTOOL ?= $(ESPCOMP)/esptool_py/esptool/esptool.py
 
 # verify the ESP IDF version
-ESPIDF_SUPHASH := 9a26296a0e88a4c3ae27e9c848be970946fff87e
+ESPIDF_SUPHASH := 2c95a77cf93781f296883d5dbafcdc18e4389656
 ESPIDF_CURHASH := $(shell git -C $(ESPIDF) show -s --pretty=format:'%H')
 ifneq ($(ESPIDF_CURHASH),$(ESPIDF_SUPHASH))
 $(info ** WARNING **)
@@ -214,6 +214,7 @@ ESPIDF_DRIVER_O = $(addprefix $(ESPCOMP)/driver/,\
 
 $(BUILD)/$(ESPCOMP)/esp32/dport_access.o: CFLAGS += -Wno-array-bounds
 ESPIDF_ESP32_O = $(addprefix $(ESPCOMP)/esp32/,\
+	brownout.o \
 	panic.o \
 	esp_timer.o \
 	esp_timer_esp32.o \
@@ -240,6 +241,7 @@ ESPIDF_ESP32_O = $(addprefix $(ESPCOMP)/esp32/,\
 	intr_alloc.o \
 	dport_access.o \
 	wifi_init.o \
+	wifi_internal.o \
 	)
 
 ESPIDF_HEAP_O = $(addprefix $(ESPCOMP)/heap/,\
@@ -281,6 +283,7 @@ ESPIDF_EXPAT_O = $(addprefix $(ESPCOMP)/expat/,\
 
 ESPIDF_PTHREAD_O = $(addprefix $(ESPCOMP)/pthread/,\
 	pthread.o \
+	pthread_local_storage.o \
 	)
 
 # Assembler .S files need only basic flags, and in particular should not have
@@ -447,6 +450,7 @@ ESPIDF_LWIP_O = $(addprefix $(ESPCOMP)/lwip/,\
 	port/freertos/sys_arch.o \
 	port/netif/wlanif.o \
 	port/netif/ethernetif.o \
+	port/vfs_lwip.o \
 	)
 
 ESPIDF_MBEDTLS_O = $(addprefix $(ESPCOMP)/mbedtls/,\
@@ -615,7 +619,7 @@ APP_LD_ARGS += -L$(dir $(LIBSTDCXX_FILE_NAME)) -lstdc++
 APP_LD_ARGS += $(ESPCOMP)/newlib/lib/libc.a
 APP_LD_ARGS += $(ESPCOMP)/newlib/lib/libm.a
 APP_LD_ARGS += $(ESPCOMP)/esp32/libhal.a
-APP_LD_ARGS += -L$(ESPCOMP)/esp32/lib -lcore -lnet80211 -lphy -lrtc -lpp -lwpa -lsmartconfig -lcoexist
+APP_LD_ARGS += -L$(ESPCOMP)/esp32/lib -lcore -lnet80211 -lphy -lrtc -lpp -lwpa -lsmartconfig -lcoexist -lwps -lwpa2
 APP_LD_ARGS += $(OBJ)
 APP_LD_ARGS += --end-group
 

ports/esp32/esp32.custom_common.ld

@@ -89,13 +89,14 @@ SECTIONS
     *esp32/core_dump.o(.literal .text .literal.* .text.*)
     *app_trace/*(.literal .text .literal.* .text.*)
     *xtensa-debug-module/eri.o(.literal .text .literal.* .text.*)
-    *esp32/app_trace.o(.literal .text .literal.* .text.*)
     *libphy.a:(.literal .text .literal.* .text.*)
     *librtc.a:(.literal .text .literal.* .text.*)
     *libsoc.a:(.literal .text .literal.* .text.*)
     *libhal.a:(.literal .text .literal.* .text.*)
     *libgcc.a:lib2funcs.o(.literal .text .literal.* .text.*)
     *spi_flash/spi_flash_rom_patch.o(.literal .text .literal.* .text.*)
+    *libgcov.a:(.literal .text .literal.* .text.*)
+    INCLUDE esp32.spiram.rom-functions-iram.ld
     *py/scheduler.o*(.literal .text .literal.* .text.*)
     _iram_text_end = ABSOLUTE(.);
   } > iram0_0_seg
@@ -117,9 +118,12 @@ SECTIONS
     *(.dram1 .dram1.*)
     *esp32/panic.o(.rodata .rodata.*)
     *libphy.a:(.rodata .rodata.*)
-    *app_trace/app_trace.o:(.rodata .rodata.*)
+    *soc/esp32/rtc_clk.o(.rodata .rodata.*)
+    *app_trace/app_trace.o(.rodata .rodata.*)
+    *libgcov.a:(.rodata .rodata.*)
     *heap/multi_heap.o(.rodata .rodata.*)
     *heap/multi_heap_poisoning.o(.rodata .rodata.*)
+    INCLUDE esp32.spiram.rom-functions-dram.ld
     _data_end = ABSOLUTE(.);
     . = ALIGN(4);
   } >dram0_0_seg

ports/esp32/sdkconfig.h

@@ -8,7 +8,12 @@
 #define CONFIG_FOUR_UNIVERSAL_MAC_ADDRESS 1
 #define CONFIG_NUMBER_OF_UNIVERSAL_MAC_ADDRESS 4
 
+#define CONFIG_BROWNOUT_DET 1
+#define CONFIG_BROWNOUT_DET_LVL 0
+#define CONFIG_BROWNOUT_DET_LVL_SEL_0 1
+
 #define CONFIG_TCPIP_TASK_STACK_SIZE 2560
+#define CONFIG_TCPIP_RECVMBOX_SIZE 32
 
 #define CONFIG_ESP32_APPTRACE_DEST_NONE 1
 #define CONFIG_ESP32_PHY_MAX_TX_POWER 20
@@ -101,6 +106,7 @@
 #define CONFIG_LWIP_DHCP_MAX_NTP_SERVERS 1
 #define CONFIG_LWIP_MAX_SOCKETS 8
 #define CONFIG_LWIP_SO_REUSE 1
+#define CONFIG_LWIP_ETHARP_TRUST_IP_MAC 1
 #define CONFIG_IP_LOST_TIMER_INTERVAL 120
 #define CONFIG_UDP_RECVMBOX_SIZE 6
 #define CONFIG_TCP_MAXRTX 12