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| author | Peter Pearse <peter.pearse@arm.com> | 2007-05-18 13:33:23 (GMT) |
|---|---|---|
| committer | Peter Pearse <peter.pearse@arm.com> | 2007-05-18 13:33:23 (GMT) |
| commit | fdda367561f0f6fb21d5b575402c0f9d2fd08e76 (patch) | |
| tree | afb703e6e43ff91e6f456f12fbb43fb598373fd5 /cpu/microblaze/start.S | |
| parent | 1443a31457d68f7e8f0b9403e9832ec1e79dc59d (diff) | |
| parent | 70124c2602ae2d4c5d3dba05b482d91548242de8 (diff) | |
| download | u-boot-fdda367561f0f6fb21d5b575402c0f9d2fd08e76.tar.xz | |
Merge with git://www.denx.de/git/u-boot.git
Diffstat (limited to 'cpu/microblaze/start.S')
| -rw-r--r-- | cpu/microblaze/start.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/cpu/microblaze/start.S b/cpu/microblaze/start.S index ca3befc..3c027ff 100644 --- a/cpu/microblaze/start.S +++ b/cpu/microblaze/start.S @@ -117,3 +117,36 @@ clear_bss: 3: /* jumping to board_init */ brai board_init 1: bri 1b + +/* + * Read 16bit little endian + */ + .text + .global in16 + .ent in16 + .align 2 +in16: lhu r3, r0, r5 + bslli r4, r3, 8 + bsrli r3, r3, 8 + andi r4, r4, 0xffff + or r3, r3, r4 + rtsd r15, 8 + sext16 r3, r3 + .end in16 + +/* + * Write 16bit little endian + * first parameter(r5) - address, second(r6) - short value + */ + .text + .global out16 + .ent out16 + .align 2 +out16: bslli r3, r6, 8 + bsrli r6, r6, 8 + andi r3, r3, 0xffff + or r3, r3, r6 + sh r3, r0, r5 + rtsd r15, 8 + or r0, r0, r0 + .end out16 |