144 lines
3.4 KiB
ArmAsm
144 lines
3.4 KiB
ArmAsm
/*
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* Copyright (c) 2011 Aeroflex Gaisler
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*
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* BSD license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#define LEON3_IO_AREA 0xfff00000
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#define LEON3_CONF_AREA 0xff000
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#define VENDOR_GAISLER 0x01
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#define GAISLER_APBMST 0x006
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#define GAISLER_APBUART 0x00C
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#define GAISLER_GPTIMER 0x011
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.text
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/* ------- */
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.weak cpuinit
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.set cpuinit,_cpuinit
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/* ------- */
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!.global cpuinit
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_cpuinit:
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mov %o7,%g6
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mov %psr, %l3
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srl %l3, 24, %g5
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and %g5, 0xf, %g5
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subcc %g5, 3, %0
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be 1f
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/* other versions */
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ba 2f
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! ####### leon3 #########
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1: set 0x01, %o0 !VENDOR_GAISLER
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set 0x006, %o1 !GAISLER_APBMST
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call ahbslv_scan
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nop
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cmp %g0,%o0
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be 2f
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nop
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ld [%o0+16],%g1
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set 0xfff00000,%o0 !LEON3_IO_AREA
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and %g1,%o0,%g1 !g1: apb base
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set 0xff000,%o0 !LEON3_CONF_AREA
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or %g1,%o0,%g2 !g2: apb conf base
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! ####### uart #########
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mov %g2,%o0
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set 0x01 , %o1 ! VENDOR_GAISLER
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set 0x00C,%o2 ! GAISLER_APBUART
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call apbslv_scan
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nop
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cmp %g0,%o0
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be 2f
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nop
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call iobar_getbase
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mov %g1,%o1
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set console, %g5
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st %o1,[%g5] !uart base address
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! ####### timer #########
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mov %g2,%o0
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set 0x01 , %o1 !VENDOR_GAISLER
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set 0x011,%o2 !GAISLER_GPTIMER
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call apbslv_scan
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nop
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cmp %g0,%o0
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be 2f
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nop
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call iobar_getbase
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mov %g1,%o1
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add %o1,0x10,%o1
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set rtc, %g5
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st %o1,[%g5]
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! ################
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mov %g2,%o0
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set 0x01 , %o1 !VENDOR_GAISLER
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set 0x00D,%o2 !GAISLER_IRQMP
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call apbslv_scan
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nop
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cmp %g0,%o0
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be 2f
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nop
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call iobar_getbase
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mov %g1,%o1
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set irqmp, %g5
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st %o1,[%g5]
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ld [%o1+0x10], %o2
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srl %o2, 16, %o2
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and %o2, 15, %o2
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st %o2,[%g5+4]
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! ################
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2: mov %g6,%o7
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retl
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nop
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! force link of jiffies_64
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.global jiffies_64
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3: set jiffies_64,%g1
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.data
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.global irqmp
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irqmp: .word 0 ! IRQMP base address
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.word 0 ! extended irq number
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.text
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