Blackfin arch: make sure the BSS and kernel load address are 4 byte aligned

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

2 files changed, 10 insertions, 0 deletions

diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S
index 0896e38d6108..d062597e6217 100644
--- a/arch/blackfin/kernel/vmlinux.lds.S
+++ b/arch/blackfin/kernel/vmlinux.lds.S
@@ -83,6 +83,7 @@ SECTIONS
 #if !L1_DATA_B_LENGTH
                 *(.l1.bss.B)
 #endif
+                . = ALIGN(4);
                 ___bss_stop = .;
         }
 
diff --git a/arch/blackfin/mach-common/arch_checks.c b/arch/blackfin/mach-common/arch_checks.c
index f9160d83b91f..5986758b2752 100644
--- a/arch/blackfin/mach-common/arch_checks.c
+++ b/arch/blackfin/mach-common/arch_checks.c
@@ -27,6 +27,7 @@
  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
+#include <asm/fixed_code.h>
 #include <asm/mach/anomaly.h>
 #include <asm/mach-common/clocks.h>
 
@@ -53,3 +54,11 @@
 # endif
 
 #endif /* CONFIG_BFIN_KERNEL_CLOCK */
+
+#if CONFIG_BOOT_LOAD < FIXED_CODE_END
+# error "The kernel load address must be after the fixed code section"
+#endif
+
+#if (CONFIG_BOOT_LOAD & 0x3)
+# error "The kernel load address must be 4 byte aligned"
+#endif