bootrom: revup to latest code adding reserved stack space.

CMakeLists.txt

@@ -98,6 +98,7 @@ ppc64le_add_executable(${PROJECT_NAME}
 )
 ppc64le_linker_script(${PROJECT_NAME} "${CMAKE_CURRENT_SOURCE_DIR}/linker.ld")
 target_link_libraries(${PROJECT_NAME} PRIVATE libbase)
+target_link_libraries(${PROJECT_NAME} PRIVATE "--defsym=STACK_SIZE=2560")
 target_compile_definitions(${PROJECT_NAME} PRIVATE "-DNO_FLINT") # Disable linting
 
 format_target_sources(${PROJECT_NAME})

bootrom @ 42fdbd2c

-Subproject commit b0e997f1f2a470d862d0ed35dbb6011e4053324d
+Subproject commit 42fdbd2c06c8af33b6fadf00bd6afe503817bdf6

linker.ld

@@ -65,6 +65,13 @@ SECTIONS
         _end = .;
     } > sram
 
+    .stack ALIGN(8) (NOLOAD):
+    {
+        _fstack = .;
+        . += STACK_SIZE;
+        _estack = .;
+    } > sram
+
     /DISCARD/ :
     {
         *(.eh_frame)
@@ -72,7 +79,5 @@ SECTIONS
     }
 }
 
-PROVIDE(_fstack = ORIGIN(sram) + LENGTH(sram) - 8);
-
 /* Ensure needed symbols are at the expected locations */
 ASSERT(_exception_entry_size <= 0x80, "_exception_entry must not be larger than 0x80 bytes)")