feat(esp8266): Add configuration link function

Select to link "FreeRTOS", "LWIP", "libcore.a" and "TCPIP adapter" global data to IRAM.

components/esp8266/Kconfig

@@ -35,6 +35,11 @@ config SOC_FULL_ICACHE
         Enable this option, full 32 KB iram instead of 16 KB iram will be used as icache, so the heap use can use
         may reduce a lot.
 
+config SOC_IRAM_SIZE
+    hex
+    default 0x8000 if SOC_FULL_ICACHE
+    default 0xC000 if !SOC_FULL_ICACHE
+
 choice CONSOLE_UART_NUM
     prompt "UART peripheral to use for console output (0-1)"
     default CONSOLE_UART_CUSTOM_NUM_0
@@ -119,6 +124,14 @@ config WIFI_PPT_TASKSTACK_SIZE
         which calls promiscuous callback function. So if user's function is
         complex, the stack must be set larger.
 
+config ESP8266_CORE_GLOBAL_DATA_LINK_IRAM
+    bool "Link libcore.a internal global data to IRAM"
+    default y
+    depends on !LWIP_HIGH_THROUGHPUT
+    depends on !SOC_FULL_ICACHE
+    help
+        Link libcore.a internal global data(.bss .data COMMON) from DRAM to IRAM.
+
 endmenu
 
 menu WIFI

components/esp8266/component.mk

@@ -18,12 +18,13 @@ endif
 #Linker scripts used to link the final application.
 #Warning: These linker scripts are only used when the normal app is compiled; the bootloader
 #specifies its own scripts.
-LINKER_SCRIPTS += esp8266.common.ld esp8266.rom.ld esp8266.peripherals.ld
+LINKER_SCRIPTS += esp8266.rom.ld esp8266.peripherals.ld
 
 COMPONENT_ADD_LDFLAGS += -L$(COMPONENT_PATH)/lib \
                          $(addprefix -l,$(LIBS)) \
                          -L $(COMPONENT_PATH)/ld \
                          -T esp8266_out.ld       \
+                         -T esp8266_common_out.ld \
                          -Wl,--no-check-sections \
                          -u call_user_start      \
                          $(addprefix -T ,$(LINKER_SCRIPTS))
@@ -38,11 +39,14 @@ COMPONENT_ADD_LINKER_DEPS := $(ALL_LIB_FILES) $(addprefix ld/,$(LINKER_SCRIPTS))
 #
 # The library doesn't really depend on esp8266_out.ld, but it
 # saves us from having to add the target to a Makefile.projbuild
-$(COMPONENT_LIBRARY): esp8266_out.ld
+$(COMPONENT_LIBRARY): esp8266_out.ld esp8266_common_out.ld
 
 esp8266_out.ld: $(COMPONENT_PATH)/ld/esp8266.ld ../include/sdkconfig.h
 	$(CC) -I ../include -C -P -x c -E $< -o $@
 
+esp8266_common_out.ld: $(COMPONENT_PATH)/ld/esp8266.common.ld ../include/sdkconfig.h
+	$(CC) -I ../include -C -P -x c -E $< -o $@
+
 COMPONENT_EXTRA_CLEAN := esp8266_out.ld
 
 endif

components/esp8266/ld/esp8266.common.ld

@@ -1,6 +1,8 @@
 /* This linker script generated from xt-genldscripts.tpp for LSP . */
 /* Linker Script for ld -N */
 
+#include "sdkconfig.h"
+
 PHDRS
 {
   dport0_0_phdr PT_LOAD;
@@ -108,6 +110,25 @@ SECTIONS
     *(.fini.literal)
     *(.fini)
     *(.gnu.version)
+
+#ifdef CONFIG_LWIP_GLOBAL_DATA_LINK_IRAM
+    *liblwip.a:(.bss .data .bss.* .data.* COMMON)
+#endif
+
+#ifdef CONFIG_TCPIP_ADAPTER_GLOBAL_DATA_LINK_IRAM
+    *libtcpip_adapter.a:(.bss .data .bss.* .data.* COMMON)
+#endif
+
+#ifdef CONFIG_ESP8266_CORE_GLOBAL_DATA_LINK_IRAM
+    *libcore.a:(.bss .data .bss.* .data.* COMMON)
+#endif
+
+#ifdef CONFIG_FREERTOS_GLOBAL_DATA_LINK_IRAM
+    *libfreertos.a:tasks.o(.bss .data .bss.* .data.* COMMON)
+    *libfreertos.a:timers.o(.bss .data .bss.* .data.* COMMON)
+    *libfreertos.a:freertos_hooks.o(.bss .data .bss.* .data.* COMMON)
+#endif
+
     _text_end = ABSOLUTE(.);
     _etext = .;
   } >iram1_0_seg :iram1_0_phdr

components/esp8266/ld/esp8266.ld

@@ -20,11 +20,11 @@ MEMORY
 {
   dport0_0_seg :    org = 0x3FF00000, len = 0x10
 
-  /* All .data/.bss/heap are in this segment. 1024 bytes is for system start and interrupt*/
-  dram0_0_seg  :    org = 0x3FFE8000, len = 0x18000 - 1024
+  /* All .data/.bss/heap are in this segment. */
+  dram0_0_seg  :    org = 0x3FFE8000, len = 0x18000
 
   /* Functions which are critical should be put in this segment. */
-  iram1_0_seg  :    org = 0x40100000, len = 0x8000
+  iram1_0_seg  :    org = 0x40100000, len = CONFIG_SOC_IRAM_SIZE
 
   /* It is actually mapped to flash. */
   irom0_0_seg  :    org = 0x40200010 + CONFIG_PARTITION_TABLE_CUSTOM_APP_BIN_OFFSET, len = 0x100000 - 0x10 - CONFIG_PARTITION_TABLE_CUSTOM_APP_BIN_OFFSET

components/freertos/Kconfig

@@ -29,5 +29,13 @@ config FREERTOS_ISR_STACKSIZE
     default 512
     help
         The interrupt handlers have their own stack. The size of the stack can be defined here.
+
+config FREERTOS_GLOBAL_DATA_LINK_IRAM
+    bool "Link FreeRTOS global data to IRAM"
+    default y
+    depends on !LWIP_HIGH_THROUGHPUT
+    depends on !SOC_FULL_ICACHE
+    help
+        Link FreeRTOS global data(.bss .data COMMON) from DRAM to IRAM.
         
 endmenu

components/lwip/Kconfig

@@ -17,6 +17,14 @@ config LWIP_HIGH_THROUGHPUT
         chip should full 32 KB IRAM as icache. For these 2 reasons, the global heap user can used
         may reduce a lot.
 
+config LWIP_GLOBAL_DATA_LINK_IRAM
+    bool "Link LWIP global data to IRAM"
+    default y
+    depends on !LWIP_HIGH_THROUGHPUT
+    depends on !SOC_FULL_ICACHE
+    help
+        Link LWIP global data(.bss .data COMMON) from DRAM to IRAM.
+
 menu "ARP"
 
 config LWIP_ARP_TABLE_SIZE

components/tcpip_adapter/Kconfig

@@ -13,4 +13,12 @@ config IP_LOST_TIMER_INTERVAL
         the timer expires. The IP lost timer is stopped if the station get the IP again before
         the timer expires.
 
+config TCPIP_ADAPTER_GLOBAL_DATA_LINK_IRAM
+    bool "Link TCPIP adapter global data to IRAM"
+    default y
+    depends on !LWIP_HIGH_THROUGHPUT
+    depends on !SOC_FULL_ICACHE
+    help
+        Link TCPIP adapter global data(.bss .data COMMON) from DRAM to IRAM.
+
 endmenu