Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze

* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Fix ASM optimized code for LE
  microblaze: Fix unaligned issue on MMU system with BS=0 DIV=1
  microblaze: Fix DTB passing from bootloader

diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S
index 42434008209eaffdeb3db74518db24d2d088512b..0db20b5abb54e44489362d2bcc53e2600ccb8ad5 100644 (file)
--- a/arch/microblaze/kernel/head.S
+++ b/arch/microblaze/kernel/head.S
@@ -77,8 +77,18 @@ real_start:
    We ensure r7 points to a valid FDT, just in case the bootloader
    is broken or non-existent */
        beqi    r7, no_fdt_arg                  /* NULL pointer?  don't copy */
-       lw      r11, r0, r7                     /* Does r7 point to a */
-       rsubi   r11, r11, OF_DT_HEADER          /* valid FDT? */
+/* Does r7 point to a valid FDT? Load HEADER magic number */
+       /* Run time Big/Little endian platform */
+       /* Save 1 as word and load byte - 0 - BIG, 1 - LITTLE */
+       addik   r11, r0, 0x1 /* BIG/LITTLE checking value */
+       /* __bss_start will be zeroed later - it is just temp location */
+       swi     r11, r0, TOPHYS(__bss_start)
+       lbui    r11, r0, TOPHYS(__bss_start)
+       beqid   r11, big_endian /* DO NOT break delay stop dependency */
+       lw      r11, r0, r7 /* Big endian load in delay slot */
+       lwr     r11, r0, r7 /* Little endian load */
+big_endian:
+       rsubi   r11, r11, OF_DT_HEADER  /* Check FDT header */
        beqi    r11, _prepare_copy_fdt
        or      r7, r0, r0              /* clear R7 when not valid DTB */
        bnei    r11, no_fdt_arg                 /* No - get out of here */

diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S
index 25f6e07d8de883c701a8113da277b56f3a9f86de..782680de312178cf014d818ec0f4f58550000692 100644 (file)
--- a/arch/microblaze/kernel/hw_exception_handler.S
+++ b/arch/microblaze/kernel/hw_exception_handler.S
@@ -147,10 +147,6 @@
        #if CONFIG_XILINX_MICROBLAZE0_USE_BARREL > 0
        #define BSRLI(rD, rA, imm)      \
                bsrli rD, rA, imm
-       #elif CONFIG_XILINX_MICROBLAZE0_USE_DIV > 0
-       #define BSRLI(rD, rA, imm)      \
-               ori rD, r0, (1 << imm); \
-               idivu rD, rD, rA
        #else
        #define BSRLI(rD, rA, imm) BSRLI ## imm (rD, rA)
        /* Only the used shift constants defined here - add more if needed */

diff --git a/arch/microblaze/lib/fastcopy.S b/arch/microblaze/lib/fastcopy.S
index fdc48bb065d89fe3b2443ef054d1a6ece3744b54..62021d7e249e0665cd6a1483c12de5b8b0bf5739 100644 (file)
--- a/arch/microblaze/lib/fastcopy.S
+++ b/arch/microblaze/lib/fastcopy.S
@@ -29,6 +29,10 @@
  *     between mem locations with size of xfer spec'd in bytes
  */
 
+#ifdef __MICROBLAZEEL__
+#error Microblaze LE not support ASM optimized lib func. Disable OPT_LIB_ASM.
+#endif
+
 #include <linux/linkage.h>
        .text
        .globl  memcpy