Blackfin: support boards with no external memory

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/lib_blackfin/u-boot.lds.S b/lib_blackfin/u-boot.lds.S
index 8a9e8b1..deb94c9 100644
--- a/lib_blackfin/u-boot.lds.S
+++ b/lib_blackfin/u-boot.lds.S
@@ -57,7 +57,14 @@
 
 MEMORY
 {
+#if CONFIG_MEM_SIZE
 	ram     : ORIGIN = CONFIG_SYS_MONITOR_BASE, LENGTH = CONFIG_SYS_MONITOR_LEN
+# define ram_code ram
+# define ram_data ram
+#else
+# define ram_code l1_code
+# define ram_data l1_data
+#endif
 	l1_code : ORIGIN = L1_CODE_ORIGIN,          LENGTH = L1_INST_SRAM_SIZE
 	l1_data : ORIGIN = L1_DATA_B_SRAM,          LENGTH = L1_DATA_B_SRAM_SIZE
 }
@@ -82,7 +89,7 @@
 	.text :
 	{
 		*(.text .text.*)
-	} >ram
+	} >ram_code
 
 	.rodata :
 	{
@@ -91,7 +98,7 @@
 		*(.rodata1)
 		*(.eh_frame)
 		. = ALIGN(4);
-	} >ram
+	} >ram_data
 
 	.data :
 	{
@@ -102,14 +109,14 @@
 		*(.sdata2)
 		*(.dynamic)
 		CONSTRUCTORS
-	} >ram
+	} >ram_data
 
 	.u_boot_cmd :
 	{
 		___u_boot_cmd_start = .;
 		*(.u_boot_cmd)
 		___u_boot_cmd_end = .;
-	} >ram
+	} >ram_data
 
 	.text_l1 :
 	{
@@ -118,7 +125,7 @@
 		*(.l1.text)
 		. = ALIGN(4);
 		__etext_l1 = .;
-	} >l1_code AT>ram
+	} >l1_code AT>ram_code
 	__text_l1_lma = LOADADDR(.text_l1);
 	__text_l1_len = SIZEOF(.text_l1);
 	ASSERT (__text_l1_len <= L1_INST_SRAM_SIZE, "L1 text overflow!")
@@ -131,7 +138,7 @@
 		*(.l1.bss)
 		. = ALIGN(4);
 		__edata_l1 = .;
-	} >l1_data AT>ram
+	} >l1_data AT>ram_data
 	__data_l1_lma = LOADADDR(.data_l1);
 	__data_l1_len = SIZEOF(.data_l1);
 	ASSERT (__data_l1_len <= L1_DATA_B_SRAM_SIZE, "L1 data B overflow!")
@@ -143,7 +150,7 @@
 		*(.dynbss)
 		*(.bss .bss.*)
 		*(COMMON)
-	} >ram
+	} >ram_data
 	__bss_vma = ADDR(.bss);
 	__bss_len = SIZEOF(.bss);
 }