Merge branch 'bugfix/riscv_ulp_linker_script_reset_vector_v4.3' into 'release/v4.3'

Fix RISC-V ULP failure to start (v4.3)

See merge request espressif/esp-idf!13464

components/ulp/cmake/CMakeLists.txt

@@ -149,3 +149,4 @@ add_custom_target(build
                 WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 
 target_link_libraries(${ULP_APP_NAME} -T${CMAKE_CURRENT_BINARY_DIR}/${ULP_LD_SCRIPT} ${EXTRA_LINKER_ARGS})
+set_target_properties(${ULP_APP_NAME} PROPERTIES LINK_DEPENDS ${ULP_LD_SCRIPT})

components/ulp/ld/esp32s2.ulp.riscv.ld

@@ -12,10 +12,17 @@ SECTIONS
     . = ORIGIN(ram);
     .text :
     {
+        *start.S.obj(.text.vectors) /* Default reset vector must link to offset 0x0 */
         *(.text)
         *(.text*)
     } >ram
 
+    .rodata ALIGN(4):
+    {
+        *(.rodata)
+        *(.rodata*)
+    } > ram
+
     .data ALIGN(4):
     {
         *(.data)

components/ulp/ulp_riscv/start.S

@@ -1,4 +1,4 @@
-	.section .text
+	.section .text.vectors
 	.global irq_vector
 	.global reset_vector
 
@@ -11,6 +11,8 @@ reset_vector:
 irq_vector:
 	ret
 
+	.section .text
+
 __start:
 	/* setup the stack pointer */
 	la sp, __stack_top