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Package: linux-2.4.20.tar.gz [view]
Upload User: jlfgdled
Upload Date: 2013-04-10
Package Size: 33168k
Code Size: 1k
Category:
Linux-Unix program
Development Platform:
Unix_Linux
- /*
- * BK Id: SCCS/s.misc.S 1.6 05/18/01 15:17:15 cort
- */
- /*
- * Copyright (C) Paul Mackerras 1997.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
- .text
- /*
- * Use the BAT3 registers to map the 1st 8MB of RAM to
- * the address given as the 1st argument.
- */
- .globl setup_bats
- setup_bats:
- mfpvr 5
- rlwinm 5,5,16,16,31 /* r3 = 1 for 601, 4 for 604 */
- cmpi 0,5,1
- li 0,0
- bne 4f
- mtibatl 3,0 /* invalidate BAT first */
- ori 3,3,4 /* set up BAT registers for 601 */
- li 4,0x7f
- mtibatu 3,3
- mtibatl 3,4
- b 5f
- 4: mtdbatu 3,0 /* invalidate BATs first */
- mtibatu 3,0
- ori 3,3,0xff /* set up BAT registers for 604 */
- li 4,2
- mtdbatl 3,4
- mtdbatu 3,3
- mtibatl 3,4
- mtibatu 3,3
- 5: sync
- isync
- blr
- /*
- * Flush the dcache and invalidate the icache for a range of addresses.
- *
- * flush_cache(addr, len)
- */
- .global flush_cache
- flush_cache:
- addi 4,4,0x1f /* len = (len + 0x1f) / 0x20 */
- rlwinm. 4,4,27,5,31
- mtctr 4
- beqlr
- 1: dcbf 0,3
- icbi 0,3
- addi 3,3,0x20
- bdnz 1b
- sync
- isync
- blr