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61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/*
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io_m3_common.c
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Routines common to all version of the M3
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Some code based on M3 SD drivers supplied by M3Adapter.
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Some code written by SaTa may have been unknowingly used.
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Copyright (c) 2006 Michael "Chishm" Chisholm
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "io_m3_common.h"
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static u16 _M3_readHalfword (u32 addr) {
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return *((vu16*)addr);
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}
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void _M3_changeMode (u32 mode) {
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_M3_readHalfword (0x08e00002);
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_M3_readHalfword (0x0800000e);
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_M3_readHalfword (0x08801ffc);
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_M3_readHalfword (0x0800104a);
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_M3_readHalfword (0x08800612);
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_M3_readHalfword (0x08000000);
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_M3_readHalfword (0x08801b66);
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_M3_readHalfword (0x08000000 + (mode << 1));
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_M3_readHalfword (0x0800080e);
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_M3_readHalfword (0x08000000);
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if ((mode & 0x0f) != 4) {
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_M3_readHalfword (0x09000000);
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} else {
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_M3_readHalfword (0x080001e4);
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_M3_readHalfword (0x080001e4);
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_M3_readHalfword (0x08000188);
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_M3_readHalfword (0x08000188);
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}
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}
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