[Blackfin] arch: handle the most common L1 shrinkage case (L1 does not exist for a part) so that any parts labeled for L1 instead get placed into external memory sections

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 27 insertions, 7 deletions

diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S
index aed832540b3b..cb01a9de2680 100644
--- a/arch/blackfin/kernel/vmlinux.lds.S
+++ b/arch/blackfin/kernel/vmlinux.lds.S
@@ -147,44 +147,64 @@ SECTIONS
 
         __l1_lma_start = .;
 
+#if L1_CODE_LENGTH
+# define LDS_L1_CODE *(.l1.text)
+#else
+# define LDS_L1_CODE
+#endif
         .text_l1 L1_CODE_START : AT(LOADADDR(.init.ramfs) + SIZEOF(.init.ramfs))
         {
                 . = ALIGN(4);
                 __stext_l1 = .;
-                *(.l1.text)
-
+                LDS_L1_CODE
                 . = ALIGN(4);
                 __etext_l1 = .;
         }
 
+#if L1_DATA_A_LENGTH
+# define LDS_L1_A_DATA  *(.l1.data)
+# define LDS_L1_A_BSS   *(.l1.bss)
+# define LDS_L1_A_CACHE *(.data_l1.cacheline_aligned)
+#else
+# define LDS_L1_A_DATA
+# define LDS_L1_A_BSS
+# define LDS_L1_A_CACHE
+#endif
         .data_l1 L1_DATA_A_START : AT(LOADADDR(.text_l1) + SIZEOF(.text_l1))
         {
                 . = ALIGN(4);
                 __sdata_l1 = .;
-                *(.l1.data)
+                LDS_L1_A_DATA
                 __edata_l1 = .;
 
                 . = ALIGN(4);
                 __sbss_l1 = .;
-                *(.l1.bss)
+                LDS_L1_A_BSS
 
                 . = ALIGN(32);
-                *(.data_l1.cacheline_aligned)
+                LDS_L1_A_CACHE
 
                 . = ALIGN(4);
                 __ebss_l1 = .;
         }
 
+#if L1_DATA_B_LENGTH
+# define LDS_L1_B_DATA  *(.l1.data.B)
+# define LDS_L1_B_BSS   *(.l1.bss.B)
+#else
+# define LDS_L1_B_DATA
+# define LDS_L1_B_BSS
+#endif
         .data_b_l1 L1_DATA_B_START : AT(LOADADDR(.data_l1) + SIZEOF(.data_l1))
         {
                 . = ALIGN(4);
                 __sdata_b_l1 = .;
-                *(.l1.data.B)
+                LDS_L1_B_DATA
                 __edata_b_l1 = .;
 
                 . = ALIGN(4);
                 __sbss_b_l1 = .;
-                *(.l1.bss.B)
+                LDS_L1_B_BSS
 
                 . = ALIGN(4);
                 __ebss_b_l1 = .;