63 lines
1.8 KiB
ArmAsm
63 lines
1.8 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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#include <asm-leon/head.h>
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.section .text
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/* ------- */
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.weak _hardreset_svt
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.set _hardreset_svt, __hardreset_svt
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/* ------- */
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.global _hardreset, _hardreset_svt_real
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! reset entry point for single vector trapping. Try enable svt
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_hardreset_svt_real:
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nop
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__hardreset_svt:
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mov %psr, %l3
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srl %l3, 24, %g5
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and %g5, 3, %g5
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subcc %g5, 3, %g0 ! leon2: 0 or 2, leon3: 3
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bne .L2
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nop
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mov %asr17, %g5 ! set svt
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set 1<<13,%g1
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or %g5,%g1,%g5
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mov %g5, %asr17
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nop; nop; nop
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mov %asr17,%g5 ! check svt
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andcc %g5, %g1, %g0
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beq .L2
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nop
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set _hardreset,%l3
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jmp %l3
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nop
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.L2: ta 0x0 ! no svt implemented (ether leon2 or svt != 1)
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nop
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