85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (C) 2014 by Marcin Bukat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "stddef.h"
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#include "target.h"
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#include "system.h"
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#include "logf.h"
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#include "jz4760b.h"
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#define PIN_BL (4 * 32 + 1)
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struct hwstub_target_desc_t __attribute__((aligned(2))) target_descriptor =
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{
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sizeof(struct hwstub_target_desc_t),
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HWSTUB_DT_TARGET,
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HWSTUB_TARGET_JZ,
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"JZ4760(B)"
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};
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static struct hwstub_jz_desc_t jz_descriptor =
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{
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sizeof(struct hwstub_jz_desc_t),
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HWSTUB_DT_JZ,
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0x4760,
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'B'
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};
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void target_udelay(int us)
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{
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/* use OS timer running at 3MHz */
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uint32_t end = REG_OST_OSTCNTL + 3 * us;
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while(REG_OST_OSTCNTL < end) {}
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}
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void ost_init(void)
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{
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/* Init OS Timer: don't compare, use EXTCLK (12MHz) and set prescaler to 4
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* so that it increases at 3MHz */
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REG_TCU_TECR = TECR_OST; /* disable OST */
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REG_OST_OSTCSR = OSTCSR_CNT_MD | OSTCSR_PRESCALE4 | OSTCSR_EXT_EN;
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REG_OST_OSTCNTL = 0;
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REG_TCU_TESR = TESR_OST; /* enable OST */
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}
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void target_mdelay(int ms)
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{
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return target_udelay(ms * 1000);
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}
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void target_init(void)
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{
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ost_init();
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}
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void target_get_desc(int desc, void **buffer)
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{
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if(desc == HWSTUB_DT_JZ)
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*buffer = &jz_descriptor;
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else
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*buffer = NULL;
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}
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void target_get_config_desc(void *buffer, int *size)
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{
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(void) buffer;
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(void) size;
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}
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