diff --git a/include/firm/specfiles/ARM7-TS-FIRM.lcf.template b/include/firm/specfiles/ARM7-TS-FIRM.lcf.template
index b8222aa1..aaed8cf6 100644
--- a/include/firm/specfiles/ARM7-TS-FIRM.lcf.template
+++ b/include/firm/specfiles/ARM7-TS-FIRM.lcf.template
@@ -31,8 +31,9 @@ MEMORY
 	<END.OVERLAYS>
 
 	arena.MAIN					(RW)  :	ORIGIN = AFTER(<STATIC.NAME><FOREACH.OVERLAYS>,<OVERLAY.NAME><END.OVERLAYS>),	LENGTH = 0x0
-	check.WORKRAM				(RWX) :	ORIGIN = 0x037b8000,			LENGTH = 0x48000	>	workram.check
-
+	check.WORKRAM_SHARED				(RWX) :	ORIGIN = 0x037b8000,			LENGTH = 0x48000	>	workram.check
+	# reached OSFromBrom7Buf before OS_BOOT_CODE_BUF
+	check.WORKRAM				(RWX) :	ORIGIN = 0x037b8000,			LENGTH = 0x54000	>	workram.check
 	binary.LTDAUTOLOAD_TOP		(RW)  :	ORIGIN = 0,						LENGTH = 0x0	>	<STATIC.NAME><PROPERTY.LTDSUFFIX>
 	<FOREACH.LTDAUTOLOADS>
 	<LTDAUTOLOAD.NAME>			(RWX) :	ORIGIN = <LTDAUTOLOAD.ADDRESS>,	LENGTH = 0x0	>>	<STATIC.NAME><PROPERTY.LTDSUFFIX>
@@ -303,6 +304,11 @@ SECTIONS
 	SDK_SYS_STACKSIZE		= <STATIC.STACKSIZE>;		# allocated in WRAM
 	SDK_SYS_STACKSIZE_SIGN	= (SDK_SYS_STACKSIZE < 0x80000000) * 2 - 1;
 
+	.check.WORKRAM_SHARED:
+	{
+		. = SDK_STATIC_END;
+	} > check.WORKRAM_SHARED
+
 	.check.WORKRAM:
 	{
 		. = SDK_STATIC_BSS_END;