3 files changed, 44 insertions, 39 deletions

diff --git a/arch/blackfin/include/asm/sections.h b/arch/blackfin/include/asm/sections.h
index 1f5381fbb4a7..42f6c53c59c6 100644
--- a/arch/blackfin/include/asm/sections.h
+++ b/arch/blackfin/include/asm/sections.h
@@ -13,10 +13,18 @@ extern unsigned long memory_mtd_start, memory_mtd_end, mtd_size;
 extern unsigned long _ramstart, _ramend, _rambase;
 extern unsigned long memory_start, memory_end, physical_mem_end;
 
-extern char _stext_l1[], _etext_l1[], _sdata_l1[], _edata_l1[], _sbss_l1[],
-        _ebss_l1[], _l1_lma_start[], _sdata_b_l1[], _sbss_b_l1[], _ebss_b_l1[],
-        _stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[], _sbss_l2[],
-        _ebss_l2[], _l2_lma_start[];
+/*
+ * The weak markings on the lengths might seem weird, but this is required
+ * in order to make gcc accept the fact that these may actually have a value
+ * of 0 (since they aren't actually addresses, but sizes of sections).
+ */
+extern char _stext_l1[], _etext_l1[], _text_l1_lma[], __weak _text_l1_len[];
+extern char _sdata_l1[], _edata_l1[], _sbss_l1[], _ebss_l1[],
+        _data_l1_lma[], __weak _data_l1_len[];
+extern char _sdata_b_l1[], _edata_b_l1[], _sbss_b_l1[], _ebss_b_l1[],
+        _data_b_l1_lma[], __weak _data_b_l1_len[];
+extern char _stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[],
+        _sbss_l2[], _ebss_l2[], _l2_lma[], __weak _l2_len[];
 
 #include <asm/mem_map.h>
 
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index c202a44d1416..5fda77488319 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -178,10 +178,10 @@ void __init bfin_cache_init(void)
 
 void __init bfin_relocate_l1_mem(void)
 {
-        unsigned long l1_code_length;
-        unsigned long l1_data_a_length;
-        unsigned long l1_data_b_length;
-        unsigned long l2_length;
+        unsigned long text_l1_len = (unsigned long)_text_l1_len;
+        unsigned long data_l1_len = (unsigned long)_data_l1_len;
+        unsigned long data_b_l1_len = (unsigned long)_data_b_l1_len;
+        unsigned long l2_len = (unsigned long)_l2_len;
 
         early_shadow_stamp();
 
@@ -201,30 +201,23 @@ void __init bfin_relocate_l1_mem(void)
 
         blackfin_dma_early_init();
 
-        /* if necessary, copy _stext_l1 to _etext_l1 to L1 instruction SRAM */
-        l1_code_length = _etext_l1 - _stext_l1;
-        if (l1_code_length)
-                early_dma_memcpy(_stext_l1, _l1_lma_start, l1_code_length);
+        /* if necessary, copy L1 text to L1 instruction SRAM */
+        if (L1_CODE_LENGTH && text_l1_len)
+                early_dma_memcpy(_stext_l1, _text_l1_lma, text_l1_len);
 
-        /* if necessary, copy _sdata_l1 to _sbss_l1 to L1 data bank A SRAM */
-        l1_data_a_length = _sbss_l1 - _sdata_l1;
-        if (l1_data_a_length)
-                early_dma_memcpy(_sdata_l1, _l1_lma_start + l1_code_length, l1_data_a_length);
+        /* if necessary, copy L1 data to L1 data bank A SRAM */
+        if (L1_DATA_A_LENGTH && data_l1_len)
+                early_dma_memcpy(_sdata_l1, _data_l1_lma, data_l1_len);
 
-        /* if necessary, copy _sdata_b_l1 to _sbss_b_l1 to L1 data bank B SRAM */
-        l1_data_b_length = _sbss_b_l1 - _sdata_b_l1;
-        if (l1_data_b_length)
-                early_dma_memcpy(_sdata_b_l1, _l1_lma_start + l1_code_length +
-                        l1_data_a_length, l1_data_b_length);
+        /* if necessary, copy L1 data B to L1 data bank B SRAM */
+        if (L1_DATA_B_LENGTH && data_b_l1_len)
+                early_dma_memcpy(_sdata_b_l1, _data_b_l1_lma, data_b_l1_len);
 
         early_dma_memcpy_done();
 
-        /* if necessary, copy _stext_l2 to _edata_l2 to L2 SRAM */
-        if (L2_LENGTH != 0) {
-                l2_length = _sbss_l2 - _stext_l2;
-                if (l2_length)
-                        memcpy(_stext_l2, _l2_lma_start, l2_length);
-        }
+        /* if necessary, copy L2 text/data to L2 SRAM */
+        if (L2_LENGTH && l2_len)
+                memcpy(_stext_l2, _l2_lma, l2_len);
 }
 
 /* add_memory_region to memmap */
diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S
index 10e12539000e..01682eed771e 100644
--- a/arch/blackfin/kernel/vmlinux.lds.S
+++ b/arch/blackfin/kernel/vmlinux.lds.S
@@ -123,8 +123,6 @@ SECTIONS
                 EXIT_DATA
         }
 
-        __l1_lma_start = .;
-
         .text_l1 L1_CODE_START : AT(LOADADDR(.exit.data) + SIZEOF(.exit.data))
         {
                 . = ALIGN(4);
@@ -136,9 +134,11 @@ SECTIONS
                 . = ALIGN(4);
                 __etext_l1 = .;
         }
-        ASSERT (SIZEOF(.text_l1) <= L1_CODE_LENGTH, "L1 text overflow!")
+        __text_l1_lma = LOADADDR(.text_l1);
+        __text_l1_len = SIZEOF(.text_l1);
+        ASSERT (__text_l1_len <= L1_CODE_LENGTH, "L1 text overflow!")
 
-        .data_l1 L1_DATA_A_START : AT(LOADADDR(.text_l1) + SIZEOF(.text_l1))
+        .data_l1 L1_DATA_A_START : AT(__text_l1_lma + __text_l1_len)
         {
                 . = ALIGN(4);
                 __sdata_l1 = .;
@@ -154,9 +154,11 @@ SECTIONS
                 . = ALIGN(4);
                 __ebss_l1 = .;
         }
-        ASSERT (SIZEOF(.data_l1) <= L1_DATA_A_LENGTH, "L1 data A overflow!")
+        __data_l1_lma = LOADADDR(.data_l1);
+        __data_l1_len = SIZEOF(.data_l1);
+        ASSERT (__data_l1_len <= L1_DATA_A_LENGTH, "L1 data A overflow!")
 
-        .data_b_l1 L1_DATA_B_START : AT(LOADADDR(.data_l1) + SIZEOF(.data_l1))
+        .data_b_l1 L1_DATA_B_START : AT(__data_l1_lma + __data_l1_len)
         {
                 . = ALIGN(4);
                 __sdata_b_l1 = .;
@@ -169,11 +171,11 @@ SECTIONS
                 . = ALIGN(4);
                 __ebss_b_l1 = .;
         }
-        ASSERT (SIZEOF(.data_b_l1) <= L1_DATA_B_LENGTH, "L1 data B overflow!")
-
-        __l2_lma_start = LOADADDR(.data_b_l1) + SIZEOF(.data_b_l1);
+        __data_b_l1_lma = LOADADDR(.data_b_l1);
+        __data_b_l1_len = SIZEOF(.data_b_l1);
+        ASSERT (__data_b_l1_len <= L1_DATA_B_LENGTH, "L1 data B overflow!")
 
-        .text_data_l2 L2_START : AT(LOADADDR(.data_b_l1) + SIZEOF(.data_b_l1))
+        .text_data_l2 L2_START : AT(__data_b_l1_lma + __data_b_l1_len)
         {
                 . = ALIGN(4);
                 __stext_l2 = .;
@@ -195,12 +197,14 @@ SECTIONS
                 . = ALIGN(4);
                 __ebss_l2 = .;
         }
-        ASSERT (SIZEOF(.text_data_l2) <= L2_LENGTH, "L2 overflow!")
+        __l2_lma = LOADADDR(.text_data_l2);
+        __l2_len = SIZEOF(.text_data_l2);
+        ASSERT (__l2_len <= L2_LENGTH, "L2 overflow!")
 
         /* Force trailing alignment of our init section so that when we
          * free our init memory, we don't leave behind a partial page.
          */
-        . = LOADADDR(.text_data_l2) + SIZEOF(.text_data_l2);
+        . = __l2_lma + __l2_len;
         . = ALIGN(PAGE_SIZE);
         ___init_end = .;