Blackfin: calculate on-chip lengths at link time rather than run time

Since the link sizes never change at runtime, push the calculation out to
the linker script to save some useless calculation costs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 16 insertions, 12 deletions

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 = .;