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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-02-02 10:23:58 +1100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-02-02 10:23:58 +1100 |
| commit | afe8a887550f7cc24eb16449670b93f6b43c32d8 (patch) | |
| tree | ab6df9ea8b05eda3001cd41377295485a9e075bb | |
| parent | 405b864d3fd579d3e8a1002f7452343fbb6dbe99 (diff) | |
| parent | de93c3c119382cb888ca8a94b642dbcf8035525e (diff) | |
| download | op-kernel-dev-afe8a887550f7cc24eb16449670b93f6b43c32d8.zip op-kernel-dev-afe8a887550f7cc24eb16449670b93f6b43c32d8.tar.gz | |
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
| -rw-r--r-- | arch/microblaze/kernel/head.S | 14 | ||||
| -rw-r--r-- | arch/microblaze/kernel/hw_exception_handler.S | 4 | ||||
| -rw-r--r-- | arch/microblaze/lib/fastcopy.S | 4 |
3 files changed, 16 insertions, 6 deletions
diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S index 4243400..0db20b5 100644 --- 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 25f6e07..782680d 100644 --- 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 fdc48bb..62021d7 100644 --- 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 |
