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/* |
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* Copyright (C) 2006-2007 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or 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 |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: dev_sh4.c,v 1.39 2007/04/13 16:12:39 debug Exp $ |
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* |
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* SH4 processor specific memory mapped registers (0xf0000000 - 0xffffffff). |
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* |
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* TODO: Among other things: |
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* |
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* x) Interrupt masks (msk register stuff). |
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* x) BSC (Bus state controller). |
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* x) DMA |
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* x) UBC |
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* x) ... |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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|
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#include "console.h" |
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#include "cpu.h" |
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#include "device.h" |
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#include "devices.h" |
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#include "interrupt.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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#include "timer.h" |
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|
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#include "sh4_bscreg.h" |
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#include "sh4_cache.h" |
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#include "sh4_dmacreg.h" |
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#include "sh4_exception.h" |
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#include "sh4_intcreg.h" |
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#include "sh4_mmu.h" |
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#include "sh4_rtcreg.h" |
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#include "sh4_scifreg.h" |
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#include "sh4_scireg.h" |
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#include "sh4_tmureg.h" |
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|
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|
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#define SH4_REG_BASE 0xff000000 |
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#define SH4_TICK_SHIFT 14 |
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#define N_SH4_TIMERS 3 |
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|
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#define SCIF_TX_FIFO_SIZE 16 |
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|
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/* General-purpose I/O stuff: */ |
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#define SH4_PCTRA 0xff80002c |
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#define SH4_PDTRA 0xff800030 |
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#define SH4_PCTRB 0xff800040 |
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#define SH4_PDTRB 0xff800044 |
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#define SH4_GPIOIC 0xff800048 |
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|
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#ifdef UNSTABLE_DEVEL |
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#define SH4_DEGUG |
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/* #define debug fatal */ |
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#endif |
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|
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struct sh4_data { |
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/* SCIF (Serial controller): */ |
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uint16_t scif_smr; |
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uint8_t scif_brr; |
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uint16_t scif_scr; |
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uint16_t scif_ssr; |
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uint16_t scif_fcr; |
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uint16_t scif_lsr; |
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int scif_delayed_tx; |
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int scif_console_handle; |
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uint8_t scif_tx_fifo[SCIF_TX_FIFO_SIZE + 1]; |
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int scif_tx_fifo_cursize; |
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struct interrupt scif_tx_irq; |
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struct interrupt scif_rx_irq; |
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int scif_tx_irq_asserted; |
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int scif_rx_irq_asserted; |
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|
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/* Bus State Controller: */ |
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uint32_t bsc_bcr1; |
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uint16_t bsc_bcr2; |
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uint32_t bsc_wcr1; |
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uint32_t bsc_wcr2; |
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uint32_t bsc_mcr; |
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uint16_t bsc_rtcsr; |
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uint16_t bsc_rtcor; |
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uint16_t bsc_rfcr; |
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|
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/* GPIO: */ |
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uint32_t pctra; /* Port Control Register A */ |
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uint32_t pdtra; /* Port Data Register A */ |
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uint32_t pctrb; /* Port Control Register B */ |
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uint32_t pdtrb; /* Port Data Register B */ |
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|
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/* SCI (serial interface): */ |
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int sci_bits_outputed; |
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int sci_bits_read; |
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uint8_t sci_scsptr; |
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uint8_t sci_curbyte; |
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uint8_t sci_cur_addr; |
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|
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/* SD-RAM: */ |
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uint16_t sdmr2; |
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uint16_t sdmr3; |
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|
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/* Timer Management Unit: */ |
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struct timer *sh4_timer; |
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struct interrupt timer_irq[4]; |
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uint32_t tocr; |
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uint32_t tstr; |
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uint32_t tcnt[N_SH4_TIMERS]; |
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uint32_t tcor[N_SH4_TIMERS]; |
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uint32_t tcr[N_SH4_TIMERS]; |
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int timer_interrupts_pending[N_SH4_TIMERS]; |
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double timer_hz[N_SH4_TIMERS]; |
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|
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/* RTC: */ |
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uint32_t rtc_reg[14]; /* Excluding rcr1 and 2 */ |
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uint8_t rtc_rcr1; |
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}; |
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|
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|
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#define SH4_PSEUDO_TIMER_HZ 110.0 |
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|
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|
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/* |
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* sh4_timer_tick(): |
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* |
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* This function is called SH4_PSEUDO_TIMER_HZ times per real-world second. |
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* Its job is to update the SH4 timer counters, and if necessary, increase |
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* the number of pending interrupts. |
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* |
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* Also, RAM Refresh is also faked here. |
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*/ |
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static void sh4_timer_tick(struct timer *t, void *extra) |
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{ |
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struct sh4_data *d = (struct sh4_data *) extra; |
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int i; |
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|
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/* Fake RAM refresh: */ |
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d->bsc_rfcr ++; |
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if (d->bsc_rtcsr & (RTCSR_CMIE | RTCSR_OVIE)) { |
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fatal("sh4: RTCSR_CMIE | RTCSR_OVIE: TODO\n"); |
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/* TODO: Implement refresh interrupts etc. */ |
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exit(1); |
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} |
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|
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/* Timer interrupts: */ |
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for (i=0; i<N_SH4_TIMERS; i++) { |
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int32_t old = d->tcnt[i]; |
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|
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/* printf("tcnt[%i] = %08x tcor[%i] = %08x\n", |
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i, d->tcnt[i], i, d->tcor[i]); */ |
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|
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/* Only update timers that are currently started: */ |
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if (!(d->tstr & (TSTR_STR0 << i))) |
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continue; |
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|
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/* Update the current count: */ |
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d->tcnt[i] -= d->timer_hz[i] / SH4_PSEUDO_TIMER_HZ; |
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|
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/* Has the timer underflowed? */ |
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if ((int32_t)d->tcnt[i] < 0 && old >= 0) { |
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d->tcr[i] |= TCR_UNF; |
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|
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if (d->tcr[i] & TCR_UNIE) |
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d->timer_interrupts_pending[i] ++; |
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|
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/* |
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* Set tcnt[i] to tcor[i]. Note: Since this function |
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* is only called now and then, adding tcor[i] to |
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* tcnt[i] produces more correct values for long |
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* running timers. |
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*/ |
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d->tcnt[i] += d->tcor[i]; |
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|
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/* At least make sure that tcnt is non-negative... */ |
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if ((int32_t)d->tcnt[i] < 0) |
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d->tcnt[i] = 0; |
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} |
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} |
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} |
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|
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|
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static void scif_reassert_interrupts(struct sh4_data *d) |
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{ |
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int old_tx_asserted = d->scif_tx_irq_asserted; |
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int old_rx_asserted = d->scif_rx_irq_asserted; |
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|
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d->scif_rx_irq_asserted = |
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d->scif_scr & SCSCR2_RIE && d->scif_ssr & SCSSR2_DR; |
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|
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if (d->scif_rx_irq_asserted && !old_rx_asserted) |
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INTERRUPT_ASSERT(d->scif_rx_irq); |
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else if (!d->scif_rx_irq_asserted && old_rx_asserted) |
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INTERRUPT_DEASSERT(d->scif_rx_irq); |
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|
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d->scif_tx_irq_asserted = |
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d->scif_scr & SCSCR2_TIE && |
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d->scif_ssr & (SCSSR2_TDFE | SCSSR2_TEND); |
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|
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if (d->scif_tx_irq_asserted && !old_tx_asserted) |
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INTERRUPT_ASSERT(d->scif_tx_irq); |
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else if (!d->scif_tx_irq_asserted && old_tx_asserted) |
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INTERRUPT_DEASSERT(d->scif_tx_irq); |
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} |
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|
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|
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DEVICE_TICK(sh4) |
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{ |
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struct sh4_data *d = (struct sh4_data *) extra; |
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int i; |
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|
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/* |
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* Serial controller interrupts: |
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* |
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* RX: Cause interrupt if any char is available. |
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* TX: Send entire TX FIFO contents, and interrupt. |
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*/ |
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if (console_charavail(d->scif_console_handle)) |
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d->scif_ssr |= SCSSR2_DR; |
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else |
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d->scif_ssr &= ~SCSSR2_DR; |
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|
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if (d->scif_delayed_tx) { |
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if (--d->scif_delayed_tx == 0) { |
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/* Send TX FIFO contents: */ |
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for (i=0; i<d->scif_tx_fifo_cursize; i++) |
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console_putchar(d->scif_console_handle, |
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d->scif_tx_fifo[i]); |
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|
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/* Clear FIFO: */ |
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d->scif_tx_fifo_cursize = 0; |
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|
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/* Done sending; cause a transmit end interrupt: */ |
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d->scif_ssr |= SCSSR2_TDFE | SCSSR2_TEND; |
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} |
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} |
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|
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scif_reassert_interrupts(d); |
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|
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/* Timer interrupts: */ |
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for (i=0; i<N_SH4_TIMERS; i++) |
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if (d->timer_interrupts_pending[i] > 0) { |
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INTERRUPT_ASSERT(d->timer_irq[i]); |
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d->tcr[i] |= TCR_UNF; |
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} |
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} |
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|
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|
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/* |
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* sh_sci_cmd(): |
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* |
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* Handle a SCI command byte. |
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* |
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* Bit: Meaning: |
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* 7 Ignored (usually 1?) |
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* 6 0=Write, 1=Read |
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* 5 AD: Address transfer |
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* 4 DT: Data transfer |
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* 3..0 Data or address bits |
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*/ |
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static void sh_sci_cmd(struct sh4_data *d, struct cpu *cpu) |
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{ |
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uint8_t cmd = d->sci_curbyte; |
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int writeflag = cmd & 0x40? 0 : 1; |
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int address_transfer; |
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|
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/* fatal("[ CMD BYTE %02x ]\n", cmd); */ |
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|
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if (!(cmd & 0x80)) { |
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fatal("SCI cmd bit 7 not set? TODO\n"); |
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exit(1); |
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} |
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|
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if ((cmd & 0x30) == 0x20) |
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address_transfer = 1; |
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else if ((cmd & 0x30) == 0x10) |
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address_transfer = 0; |
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else { |
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fatal("SCI: Neither data nor address transfer? TODO\n"); |
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exit(1); |
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} |
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|
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if (address_transfer) |
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d->sci_cur_addr = cmd & 0x0f; |
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|
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if (!writeflag) { |
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/* Read data from the current address: */ |
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uint8_t data_byte; |
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|
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cpu->memory_rw(cpu, cpu->mem, SCI_DEVICE_BASE + d->sci_cur_addr, |
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&data_byte, 1, MEM_READ, PHYSICAL); |
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|
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debug("[ SCI: read addr=%x data=%x ]\n", |
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d->sci_cur_addr, data_byte); |
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|
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d->sci_curbyte = data_byte; |
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|
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/* Set bit 7 right away: */ |
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d->sci_scsptr &= ~SCSPTR_SPB1DT; |
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if (data_byte & 0x80) |
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d->sci_scsptr |= SCSPTR_SPB1DT; |
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} |
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|
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if (writeflag && !address_transfer) { |
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/* Write the 4 data bits to the current address: */ |
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uint8_t data_byte = cmd & 0x0f; |
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|
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debug("[ SCI: write addr=%x data=%x ]\n", |
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d->sci_cur_addr, data_byte); |
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|
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cpu->memory_rw(cpu, cpu->mem, SCI_DEVICE_BASE + d->sci_cur_addr, |
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&data_byte, 1, MEM_WRITE, PHYSICAL); |
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} |
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} |
340 |
|
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|
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/* |
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* sh_sci_access(): |
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* |
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* Reads or writes a bit via the SH4's serial interface. If writeflag is |
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* non-zero, input is used. If writeflag is zero, a bit is outputed as |
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* the return value from this function. |
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*/ |
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static uint8_t sh_sci_access(struct sh4_data *d, struct cpu *cpu, |
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int writeflag, uint8_t input) |
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{ |
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if (writeflag) { |
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/* WRITE: */ |
354 |
int clockpulse; |
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uint8_t old = d->sci_scsptr; |
356 |
d->sci_scsptr = input; |
357 |
|
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/* |
359 |
* Clock pulse (SCSPTR_SPB0DT going from 0 to 1, |
360 |
* when SCSPTR_SPB0IO was already set): |
361 |
*/ |
362 |
clockpulse = old & SCSPTR_SPB0IO && |
363 |
d->sci_scsptr & SCSPTR_SPB0DT && |
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!(old & SCSPTR_SPB0DT); |
365 |
|
366 |
if (!clockpulse) |
367 |
return 0; |
368 |
|
369 |
/* Are we in output or input mode? */ |
370 |
if (d->sci_scsptr & SCSPTR_SPB1IO) { |
371 |
/* Output: */ |
372 |
int bit = d->sci_scsptr & SCSPTR_SPB1DT? 1 : 0; |
373 |
d->sci_curbyte <<= 1; |
374 |
d->sci_curbyte |= bit; |
375 |
d->sci_bits_outputed ++; |
376 |
if (d->sci_bits_outputed == 8) { |
377 |
/* 4 control bits and 4 address/data bits have |
378 |
been written. */ |
379 |
sh_sci_cmd(d, cpu); |
380 |
d->sci_bits_outputed = 0; |
381 |
} |
382 |
} else { |
383 |
/* Input: */ |
384 |
int bit; |
385 |
d->sci_bits_read ++; |
386 |
d->sci_bits_read &= 7; |
387 |
|
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bit = d->sci_curbyte & (0x80 >> d->sci_bits_read); |
389 |
|
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d->sci_scsptr &= ~SCSPTR_SPB1DT; |
391 |
if (bit) |
392 |
d->sci_scsptr |= SCSPTR_SPB1DT; |
393 |
} |
394 |
|
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/* Return (value doesn't matter). */ |
396 |
return 0; |
397 |
} else { |
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/* READ: */ |
399 |
return d->sci_scsptr; |
400 |
} |
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} |
402 |
|
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|
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DEVICE_ACCESS(sh4_itlb_aa) |
405 |
{ |
406 |
uint64_t idata = 0, odata = 0; |
407 |
int e = (relative_addr & SH4_ITLB_E_MASK) >> SH4_ITLB_E_SHIFT; |
408 |
|
409 |
if (writeflag == MEM_WRITE) { |
410 |
int safe_to_invalidate = 0; |
411 |
uint32_t old_hi = cpu->cd.sh.itlb_hi[e]; |
412 |
if ((cpu->cd.sh.itlb_lo[e] & SH4_PTEL_SZ_MASK)==SH4_PTEL_SZ_4K) |
413 |
safe_to_invalidate = 1; |
414 |
|
415 |
idata = memory_readmax64(cpu, data, len); |
416 |
cpu->cd.sh.itlb_hi[e] &= |
417 |
~(SH4_PTEH_VPN_MASK | SH4_PTEH_ASID_MASK); |
418 |
cpu->cd.sh.itlb_hi[e] |= (idata & |
419 |
(SH4_ITLB_AA_VPN_MASK | SH4_ITLB_AA_ASID_MASK)); |
420 |
cpu->cd.sh.itlb_lo[e] &= ~SH4_PTEL_V; |
421 |
if (idata & SH4_ITLB_AA_V) |
422 |
cpu->cd.sh.itlb_lo[e] |= SH4_PTEL_V; |
423 |
|
424 |
/* Invalidate if this ITLB entry previously belonged to the |
425 |
currently running process, or if it was shared: */ |
426 |
if (cpu->cd.sh.ptel & SH4_PTEL_SH || |
427 |
(old_hi & SH4_ITLB_AA_ASID_MASK) == |
428 |
(cpu->cd.sh.pteh & SH4_PTEH_ASID_MASK)) { |
429 |
if (safe_to_invalidate) |
430 |
cpu->invalidate_translation_caches(cpu, |
431 |
old_hi & ~0xfff, INVALIDATE_VADDR); |
432 |
else |
433 |
cpu->invalidate_translation_caches(cpu, |
434 |
0, INVALIDATE_ALL); |
435 |
} |
436 |
} else { |
437 |
odata = cpu->cd.sh.itlb_hi[e] & |
438 |
(SH4_ITLB_AA_VPN_MASK | SH4_ITLB_AA_ASID_MASK); |
439 |
if (cpu->cd.sh.itlb_lo[e] & SH4_PTEL_V) |
440 |
odata |= SH4_ITLB_AA_V; |
441 |
memory_writemax64(cpu, data, len, odata); |
442 |
} |
443 |
|
444 |
return 1; |
445 |
} |
446 |
|
447 |
|
448 |
DEVICE_ACCESS(sh4_itlb_da1) |
449 |
{ |
450 |
uint32_t mask = SH4_PTEL_SH | SH4_PTEL_C | SH4_PTEL_SZ_MASK | |
451 |
SH4_PTEL_PR_MASK | SH4_PTEL_V | 0x1ffffc00; |
452 |
uint64_t idata = 0, odata = 0; |
453 |
int e = (relative_addr & SH4_ITLB_E_MASK) >> SH4_ITLB_E_SHIFT; |
454 |
|
455 |
if (relative_addr & 0x800000) { |
456 |
fatal("sh4_itlb_da1: TODO: da2 area\n"); |
457 |
exit(1); |
458 |
} |
459 |
|
460 |
if (writeflag == MEM_WRITE) { |
461 |
uint32_t old_lo = cpu->cd.sh.itlb_lo[e]; |
462 |
int safe_to_invalidate = 0; |
463 |
if ((cpu->cd.sh.itlb_lo[e] & SH4_PTEL_SZ_MASK)==SH4_PTEL_SZ_4K) |
464 |
safe_to_invalidate = 1; |
465 |
|
466 |
idata = memory_readmax64(cpu, data, len); |
467 |
cpu->cd.sh.itlb_lo[e] &= ~mask; |
468 |
cpu->cd.sh.itlb_lo[e] |= (idata & mask); |
469 |
|
470 |
/* Invalidate if this ITLB entry belongs to the |
471 |
currently running process, or if it was shared: */ |
472 |
if (old_lo & SH4_PTEL_SH || |
473 |
(cpu->cd.sh.itlb_hi[e] & SH4_ITLB_AA_ASID_MASK) == |
474 |
(cpu->cd.sh.pteh & SH4_PTEH_ASID_MASK)) { |
475 |
if (safe_to_invalidate) |
476 |
cpu->invalidate_translation_caches(cpu, |
477 |
cpu->cd.sh.itlb_hi[e] & ~0xfff, |
478 |
INVALIDATE_VADDR); |
479 |
else |
480 |
cpu->invalidate_translation_caches(cpu, |
481 |
0, INVALIDATE_ALL); |
482 |
} |
483 |
} else { |
484 |
odata = cpu->cd.sh.itlb_lo[e] & mask; |
485 |
memory_writemax64(cpu, data, len, odata); |
486 |
} |
487 |
|
488 |
return 1; |
489 |
} |
490 |
|
491 |
|
492 |
DEVICE_ACCESS(sh4_utlb_aa) |
493 |
{ |
494 |
uint64_t idata = 0, odata = 0; |
495 |
int i, e = (relative_addr & SH4_UTLB_E_MASK) >> SH4_UTLB_E_SHIFT; |
496 |
int a = relative_addr & SH4_UTLB_A; |
497 |
|
498 |
if (writeflag == MEM_WRITE) { |
499 |
int n_hits = 0; |
500 |
int safe_to_invalidate = 0; |
501 |
uint32_t vaddr_to_invalidate = 0; |
502 |
|
503 |
idata = memory_readmax64(cpu, data, len); |
504 |
if (a) { |
505 |
for (i=-SH_N_ITLB_ENTRIES; i<SH_N_UTLB_ENTRIES; i++) { |
506 |
uint32_t lo, hi; |
507 |
uint32_t mask = 0xfffff000; |
508 |
int sh; |
509 |
|
510 |
if (i < 0) { |
511 |
lo = cpu->cd.sh.itlb_lo[ |
512 |
i + SH_N_ITLB_ENTRIES]; |
513 |
hi = cpu->cd.sh.itlb_hi[ |
514 |
i + SH_N_ITLB_ENTRIES]; |
515 |
} else { |
516 |
lo = cpu->cd.sh.utlb_lo[i]; |
517 |
hi = cpu->cd.sh.utlb_hi[i]; |
518 |
} |
519 |
|
520 |
sh = lo & SH4_PTEL_SH; |
521 |
if (!(lo & SH4_PTEL_V)) |
522 |
continue; |
523 |
|
524 |
switch (lo & SH4_PTEL_SZ_MASK) { |
525 |
case SH4_PTEL_SZ_1K: mask = 0xfffffc00; break; |
526 |
case SH4_PTEL_SZ_64K: mask = 0xffff0000; break; |
527 |
case SH4_PTEL_SZ_1M: mask = 0xfff00000; break; |
528 |
} |
529 |
|
530 |
if ((hi & mask) != (idata & mask)) |
531 |
continue; |
532 |
|
533 |
if ((lo & SH4_PTEL_SZ_MASK) == |
534 |
SH4_PTEL_SZ_4K) { |
535 |
safe_to_invalidate = 1; |
536 |
vaddr_to_invalidate = hi & mask; |
537 |
} |
538 |
|
539 |
if (!sh && (hi & SH4_PTEH_ASID_MASK) != |
540 |
(cpu->cd.sh.pteh & SH4_PTEH_ASID_MASK)) |
541 |
continue; |
542 |
|
543 |
if (i < 0) { |
544 |
cpu->cd.sh.itlb_lo[i + |
545 |
SH_N_ITLB_ENTRIES] &= ~SH4_PTEL_V; |
546 |
if (idata & SH4_UTLB_AA_V) |
547 |
cpu->cd.sh.itlb_lo[ |
548 |
i+SH_N_ITLB_ENTRIES] |= |
549 |
SH4_PTEL_V; |
550 |
} else { |
551 |
cpu->cd.sh.utlb_lo[i] &= |
552 |
~(SH4_PTEL_D | SH4_PTEL_V); |
553 |
if (idata & SH4_UTLB_AA_D) |
554 |
cpu->cd.sh.utlb_lo[i] |= |
555 |
SH4_PTEL_D; |
556 |
if (idata & SH4_UTLB_AA_V) |
557 |
cpu->cd.sh.utlb_lo[i] |= |
558 |
SH4_PTEL_V; |
559 |
} |
560 |
|
561 |
if (i >= 0) |
562 |
n_hits ++; |
563 |
} |
564 |
|
565 |
if (n_hits > 1) |
566 |
sh_exception(cpu, |
567 |
EXPEVT_RESET_TLB_MULTI_HIT, 0, 0); |
568 |
} else { |
569 |
if ((cpu->cd.sh.utlb_lo[e] & SH4_PTEL_SZ_MASK) == |
570 |
SH4_PTEL_SZ_4K) { |
571 |
safe_to_invalidate = 1; |
572 |
vaddr_to_invalidate = |
573 |
cpu->cd.sh.utlb_hi[e] & ~0xfff; |
574 |
} |
575 |
|
576 |
cpu->cd.sh.utlb_hi[e] &= |
577 |
~(SH4_PTEH_VPN_MASK | SH4_PTEH_ASID_MASK); |
578 |
cpu->cd.sh.utlb_hi[e] |= (idata & |
579 |
(SH4_UTLB_AA_VPN_MASK | SH4_UTLB_AA_ASID_MASK)); |
580 |
|
581 |
cpu->cd.sh.utlb_lo[e] &= ~(SH4_PTEL_D | SH4_PTEL_V); |
582 |
if (idata & SH4_UTLB_AA_D) |
583 |
cpu->cd.sh.utlb_lo[e] |= SH4_PTEL_D; |
584 |
if (idata & SH4_UTLB_AA_V) |
585 |
cpu->cd.sh.utlb_lo[e] |= SH4_PTEL_V; |
586 |
} |
587 |
|
588 |
if (safe_to_invalidate) |
589 |
cpu->invalidate_translation_caches(cpu, |
590 |
vaddr_to_invalidate, INVALIDATE_VADDR); |
591 |
else |
592 |
cpu->invalidate_translation_caches(cpu, 0, |
593 |
INVALIDATE_ALL); |
594 |
} else { |
595 |
odata = cpu->cd.sh.utlb_hi[e] & |
596 |
(SH4_UTLB_AA_VPN_MASK | SH4_UTLB_AA_ASID_MASK); |
597 |
if (cpu->cd.sh.utlb_lo[e] & SH4_PTEL_D) |
598 |
odata |= SH4_UTLB_AA_D; |
599 |
if (cpu->cd.sh.utlb_lo[e] & SH4_PTEL_V) |
600 |
odata |= SH4_UTLB_AA_V; |
601 |
memory_writemax64(cpu, data, len, odata); |
602 |
} |
603 |
|
604 |
return 1; |
605 |
} |
606 |
|
607 |
|
608 |
DEVICE_ACCESS(sh4_utlb_da1) |
609 |
{ |
610 |
uint32_t mask = SH4_PTEL_WT | SH4_PTEL_SH | SH4_PTEL_D | SH4_PTEL_C |
611 |
| SH4_PTEL_SZ_MASK | SH4_PTEL_PR_MASK | SH4_PTEL_V | 0x1ffffc00; |
612 |
uint64_t idata = 0, odata = 0; |
613 |
int e = (relative_addr & SH4_UTLB_E_MASK) >> SH4_UTLB_E_SHIFT; |
614 |
|
615 |
if (relative_addr & 0x800000) { |
616 |
fatal("sh4_utlb_da1: TODO: da2 area\n"); |
617 |
exit(1); |
618 |
} |
619 |
|
620 |
if (writeflag == MEM_WRITE) { |
621 |
uint32_t old_lo = cpu->cd.sh.utlb_lo[e]; |
622 |
int safe_to_invalidate = 0; |
623 |
if ((cpu->cd.sh.utlb_lo[e] & SH4_PTEL_SZ_MASK)==SH4_PTEL_SZ_4K) |
624 |
safe_to_invalidate = 1; |
625 |
|
626 |
idata = memory_readmax64(cpu, data, len); |
627 |
cpu->cd.sh.utlb_lo[e] &= ~mask; |
628 |
cpu->cd.sh.utlb_lo[e] |= (idata & mask); |
629 |
|
630 |
/* Invalidate if this UTLB entry belongs to the |
631 |
currently running process, or if it was shared: */ |
632 |
if (old_lo & SH4_PTEL_SH || |
633 |
(cpu->cd.sh.utlb_hi[e] & SH4_ITLB_AA_ASID_MASK) == |
634 |
(cpu->cd.sh.pteh & SH4_PTEH_ASID_MASK)) { |
635 |
if (safe_to_invalidate) |
636 |
cpu->invalidate_translation_caches(cpu, |
637 |
cpu->cd.sh.utlb_hi[e] & ~0xfff, |
638 |
INVALIDATE_VADDR); |
639 |
else |
640 |
cpu->invalidate_translation_caches(cpu, |
641 |
0, INVALIDATE_ALL); |
642 |
} |
643 |
} else { |
644 |
odata = cpu->cd.sh.utlb_lo[e] & mask; |
645 |
memory_writemax64(cpu, data, len, odata); |
646 |
} |
647 |
|
648 |
return 1; |
649 |
} |
650 |
|
651 |
|
652 |
DEVICE_ACCESS(sh4) |
653 |
{ |
654 |
struct sh4_data *d = (struct sh4_data *) extra; |
655 |
uint64_t idata = 0, odata = 0; |
656 |
int timer_nr = 0, dma_channel = 0; |
657 |
|
658 |
if (writeflag == MEM_WRITE) |
659 |
idata = memory_readmax64(cpu, data, len); |
660 |
|
661 |
relative_addr += SH4_REG_BASE; |
662 |
|
663 |
/* SD-RAM access uses address only: */ |
664 |
if (relative_addr >= 0xff900000 && relative_addr <= 0xff97ffff) { |
665 |
/* Possibly not 100% correct... TODO */ |
666 |
int v = (relative_addr >> 2) & 0xffff; |
667 |
if (relative_addr & 0x00040000) |
668 |
d->sdmr3 = v; |
669 |
else |
670 |
d->sdmr2 = v; |
671 |
debug("[ sh4: sdmr%i set to 0x%04"PRIx16" ]\n", |
672 |
relative_addr & 0x00040000? 3 : 2, v); |
673 |
return 1; |
674 |
} |
675 |
|
676 |
|
677 |
switch (relative_addr) { |
678 |
|
679 |
/*************************************************/ |
680 |
|
681 |
case SH4_PVR_ADDR: |
682 |
odata = cpu->cd.sh.cpu_type.pvr; |
683 |
break; |
684 |
|
685 |
case SH4_PRR_ADDR: |
686 |
odata = cpu->cd.sh.cpu_type.prr; |
687 |
break; |
688 |
|
689 |
case SH4_PTEH: |
690 |
if (writeflag == MEM_READ) |
691 |
odata = cpu->cd.sh.pteh; |
692 |
else { |
693 |
int old_asid = cpu->cd.sh.pteh & SH4_PTEH_ASID_MASK; |
694 |
cpu->cd.sh.pteh = idata; |
695 |
|
696 |
if ((idata & SH4_PTEH_ASID_MASK) != old_asid) { |
697 |
/* |
698 |
* TODO: Don't invalidate everything, |
699 |
* only those pages that belonged to the |
700 |
* old asid. |
701 |
*/ |
702 |
cpu->invalidate_translation_caches( |
703 |
cpu, 0, INVALIDATE_ALL); |
704 |
} |
705 |
} |
706 |
break; |
707 |
|
708 |
case SH4_PTEL: |
709 |
if (writeflag == MEM_READ) |
710 |
odata = cpu->cd.sh.ptel; |
711 |
else |
712 |
cpu->cd.sh.ptel = idata; |
713 |
break; |
714 |
|
715 |
case SH4_TTB: |
716 |
if (writeflag == MEM_READ) |
717 |
odata = cpu->cd.sh.ttb; |
718 |
else |
719 |
cpu->cd.sh.ttb = idata; |
720 |
break; |
721 |
|
722 |
case SH4_TEA: |
723 |
if (writeflag == MEM_READ) |
724 |
odata = cpu->cd.sh.tea; |
725 |
else |
726 |
cpu->cd.sh.tea = idata; |
727 |
break; |
728 |
|
729 |
case SH4_PTEA: |
730 |
if (writeflag == MEM_READ) |
731 |
odata = cpu->cd.sh.ptea; |
732 |
else |
733 |
cpu->cd.sh.ptea = idata; |
734 |
break; |
735 |
|
736 |
case SH4_MMUCR: |
737 |
if (writeflag == MEM_READ) { |
738 |
odata = cpu->cd.sh.mmucr; |
739 |
} else { |
740 |
if (idata & SH4_MMUCR_TI) { |
741 |
/* TLB invalidate. */ |
742 |
int i; |
743 |
for (i = 0; i < SH_N_ITLB_ENTRIES; i++) |
744 |
cpu->cd.sh.itlb_lo[i] &= |
745 |
~SH4_PTEL_V; |
746 |
|
747 |
for (i = 0; i < SH_N_UTLB_ENTRIES; i++) |
748 |
cpu->cd.sh.utlb_lo[i] &= |
749 |
~SH4_PTEL_V; |
750 |
|
751 |
cpu->invalidate_translation_caches(cpu, |
752 |
0, INVALIDATE_ALL); |
753 |
|
754 |
/* Should always read back as 0. */ |
755 |
idata &= ~SH4_MMUCR_TI; |
756 |
} |
757 |
|
758 |
cpu->cd.sh.mmucr = idata; |
759 |
} |
760 |
break; |
761 |
|
762 |
case SH4_CCR: |
763 |
if (writeflag == MEM_READ) { |
764 |
odata = cpu->cd.sh.ccr; |
765 |
} else { |
766 |
cpu->cd.sh.ccr = idata; |
767 |
} |
768 |
break; |
769 |
|
770 |
case SH4_QACR0: |
771 |
if (writeflag == MEM_READ) { |
772 |
odata = cpu->cd.sh.qacr0; |
773 |
} else { |
774 |
cpu->cd.sh.qacr0 = idata; |
775 |
} |
776 |
break; |
777 |
|
778 |
case SH4_QACR1: |
779 |
if (writeflag == MEM_READ) { |
780 |
odata = cpu->cd.sh.qacr1; |
781 |
} else { |
782 |
cpu->cd.sh.qacr1 = idata; |
783 |
} |
784 |
break; |
785 |
|
786 |
case SH4_TRA: |
787 |
if (writeflag == MEM_READ) |
788 |
odata = cpu->cd.sh.tra; |
789 |
else |
790 |
cpu->cd.sh.tra = idata; |
791 |
break; |
792 |
|
793 |
case SH4_EXPEVT: |
794 |
if (writeflag == MEM_READ) |
795 |
odata = cpu->cd.sh.expevt; |
796 |
else |
797 |
cpu->cd.sh.expevt = idata; |
798 |
break; |
799 |
|
800 |
case SH4_INTEVT: |
801 |
if (writeflag == MEM_READ) |
802 |
odata = cpu->cd.sh.intevt; |
803 |
else |
804 |
cpu->cd.sh.intevt = idata; |
805 |
break; |
806 |
|
807 |
|
808 |
/********************************/ |
809 |
/* UBC: User Break Controller */ |
810 |
|
811 |
case 0xff200008: /* SH4_BBRA */ |
812 |
/* TODO */ |
813 |
break; |
814 |
|
815 |
|
816 |
/********************************/ |
817 |
/* TMU: Timer Management Unit */ |
818 |
|
819 |
case SH4_TOCR: |
820 |
/* Timer Output Control Register */ |
821 |
if (writeflag == MEM_WRITE) { |
822 |
d->tocr = idata; |
823 |
if (idata & TOCR_TCOE) |
824 |
fatal("[ sh4 timer: TCOE not yet " |
825 |
"implemented ]\n"); |
826 |
} else { |
827 |
odata = d->tocr; |
828 |
} |
829 |
break; |
830 |
|
831 |
case SH4_TSTR: |
832 |
/* Timer Start Register */ |
833 |
if (writeflag == MEM_READ) { |
834 |
odata = d->tstr; |
835 |
} else { |
836 |
if (idata & 1 && !(d->tstr & 1)) |
837 |
debug("[ sh4 timer: starting timer 0 ]\n"); |
838 |
if (idata & 2 && !(d->tstr & 2)) |
839 |
debug("[ sh4 timer: starting timer 1 ]\n"); |
840 |
if (idata & 4 && !(d->tstr & 4)) |
841 |
debug("[ sh4 timer: starting timer 2 ]\n"); |
842 |
if (!(idata & 1) && d->tstr & 1) |
843 |
debug("[ sh4 timer: stopping timer 0 ]\n"); |
844 |
if (!(idata & 2) && d->tstr & 2) |
845 |
debug("[ sh4 timer: stopping timer 1 ]\n"); |
846 |
if (!(idata & 4) && d->tstr & 4) |
847 |
debug("[ sh4 timer: stopping timer 2 ]\n"); |
848 |
d->tstr = idata; |
849 |
} |
850 |
break; |
851 |
|
852 |
case SH4_TCOR2: |
853 |
timer_nr ++; |
854 |
case SH4_TCOR1: |
855 |
timer_nr ++; |
856 |
case SH4_TCOR0: |
857 |
/* Timer Constant Register */ |
858 |
if (writeflag == MEM_READ) |
859 |
odata = d->tcor[timer_nr]; |
860 |
else |
861 |
d->tcor[timer_nr] = idata; |
862 |
break; |
863 |
|
864 |
case SH4_TCNT2: |
865 |
timer_nr ++; |
866 |
case SH4_TCNT1: |
867 |
timer_nr ++; |
868 |
case SH4_TCNT0: |
869 |
/* Timer Counter Register */ |
870 |
if (writeflag == MEM_READ) |
871 |
odata = d->tcnt[timer_nr]; |
872 |
else |
873 |
d->tcnt[timer_nr] = idata; |
874 |
break; |
875 |
|
876 |
case SH4_TCR2: |
877 |
timer_nr ++; |
878 |
case SH4_TCR1: |
879 |
timer_nr ++; |
880 |
case SH4_TCR0: |
881 |
/* Timer Control Register */ |
882 |
if (writeflag == MEM_READ) { |
883 |
odata = d->tcr[timer_nr]; |
884 |
} else { |
885 |
if (cpu->cd.sh.pclock == 0) { |
886 |
fatal("INTERNAL ERROR: pclock must be set" |
887 |
" for this machine. Aborting.\n"); |
888 |
exit(1); |
889 |
} |
890 |
|
891 |
switch (idata & 3) { |
892 |
case TCR_TPSC_P4: |
893 |
d->timer_hz[timer_nr] = cpu->cd.sh.pclock/4.0; |
894 |
break; |
895 |
case TCR_TPSC_P16: |
896 |
d->timer_hz[timer_nr] = cpu->cd.sh.pclock/16.0; |
897 |
break; |
898 |
case TCR_TPSC_P64: |
899 |
d->timer_hz[timer_nr] = cpu->cd.sh.pclock/64.0; |
900 |
break; |
901 |
case TCR_TPSC_P256: |
902 |
d->timer_hz[timer_nr] = cpu->cd.sh.pclock/256.0; |
903 |
break; |
904 |
} |
905 |
|
906 |
debug("[ sh4 timer %i clock set to %f Hz ]\n", |
907 |
timer_nr, d->timer_hz[timer_nr]); |
908 |
|
909 |
if (idata & (TCR_ICPF | TCR_ICPE1 | TCR_ICPE0 | |
910 |
TCR_CKEG1 | TCR_CKEG0 | TCR_TPSC2)) { |
911 |
fatal("Unimplemented SH4 timer control" |
912 |
" bits: 0x%08"PRIx32". Aborting.\n", |
913 |
(int) idata); |
914 |
exit(1); |
915 |
} |
916 |
|
917 |
INTERRUPT_DEASSERT(d->timer_irq[timer_nr]); |
918 |
|
919 |
if (d->tcr[timer_nr] & TCR_UNF && !(idata & TCR_UNF)) { |
920 |
if (d->timer_interrupts_pending[timer_nr] > 0) |
921 |
d->timer_interrupts_pending[timer_nr]--; |
922 |
} |
923 |
|
924 |
d->tcr[timer_nr] = idata; |
925 |
} |
926 |
break; |
927 |
|
928 |
|
929 |
/*************************************************/ |
930 |
/* DMAC: DMA Controller */ |
931 |
|
932 |
case SH4_SAR3: |
933 |
dma_channel ++; |
934 |
case SH4_SAR2: |
935 |
dma_channel ++; |
936 |
case SH4_SAR1: |
937 |
dma_channel ++; |
938 |
case SH4_SAR0: |
939 |
dma_channel ++; |
940 |
if (writeflag == MEM_READ) |
941 |
odata = cpu->cd.sh.dmac_sar[dma_channel]; |
942 |
else |
943 |
cpu->cd.sh.dmac_sar[dma_channel] = idata; |
944 |
break; |
945 |
|
946 |
case SH4_DAR3: |
947 |
dma_channel ++; |
948 |
case SH4_DAR2: |
949 |
dma_channel ++; |
950 |
case SH4_DAR1: |
951 |
dma_channel ++; |
952 |
case SH4_DAR0: |
953 |
dma_channel ++; |
954 |
if (writeflag == MEM_READ) |
955 |
odata = cpu->cd.sh.dmac_dar[dma_channel]; |
956 |
else |
957 |
cpu->cd.sh.dmac_dar[dma_channel] = idata; |
958 |
break; |
959 |
|
960 |
case SH4_DMATCR3: |
961 |
dma_channel ++; |
962 |
case SH4_DMATCR2: |
963 |
dma_channel ++; |
964 |
case SH4_DMATCR1: |
965 |
dma_channel ++; |
966 |
case SH4_DMATCR0: |
967 |
dma_channel ++; |
968 |
if (writeflag == MEM_READ) |
969 |
odata = cpu->cd.sh.dmac_tcr[dma_channel] & 0x00ffffff; |
970 |
else { |
971 |
if (idata & ~0x00ffffff) { |
972 |
fatal("[ SH4 DMA: Attempt to set top 8 " |
973 |
"bits of the count register? 0x%08" |
974 |
PRIx32" ]\n", (uint32_t) idata); |
975 |
exit(1); |
976 |
} |
977 |
|
978 |
/* Special case: writing 0 to the count register |
979 |
means 16777216: */ |
980 |
if (idata == 0) |
981 |
idata = 0x01000000; |
982 |
cpu->cd.sh.dmac_tcr[dma_channel] = idata; |
983 |
} |
984 |
break; |
985 |
|
986 |
case SH4_CHCR3: |
987 |
dma_channel ++; |
988 |
case SH4_CHCR2: |
989 |
dma_channel ++; |
990 |
case SH4_CHCR1: |
991 |
dma_channel ++; |
992 |
case SH4_CHCR0: |
993 |
dma_channel ++; |
994 |
if (writeflag == MEM_READ) |
995 |
odata = cpu->cd.sh.dmac_chcr[dma_channel]; |
996 |
else { |
997 |
/* IP.BIN sets this to 0x12c0, and I want to know if |
998 |
some other guest OS uses other values. */ |
999 |
if (idata != 0x12c0) { |
1000 |
fatal("[ SH4 DMA: Attempt to set chcr " |
1001 |
"to 0x%08"PRIx32" ]\n", (uint32_t) idata); |
1002 |
exit(1); |
1003 |
} |
1004 |
|
1005 |
cpu->cd.sh.dmac_chcr[dma_channel] = idata; |
1006 |
} |
1007 |
break; |
1008 |
|
1009 |
|
1010 |
/*************************************************/ |
1011 |
/* BSC: Bus State Controller */ |
1012 |
|
1013 |
case SH4_BCR1: |
1014 |
if (writeflag == MEM_WRITE) |
1015 |
d->bsc_bcr1 = idata & 0x033efffd; |
1016 |
else { |
1017 |
odata = d->bsc_bcr1; |
1018 |
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
1019 |
odata |= BCR1_LITTLE_ENDIAN; |
1020 |
} |
1021 |
break; |
1022 |
|
1023 |
case SH4_BCR2: |
1024 |
if (len != sizeof(uint16_t)) { |
1025 |
fatal("Non-16-bit SH4_BCR2 access?\n"); |
1026 |
exit(1); |
1027 |
} |
1028 |
if (writeflag == MEM_WRITE) |
1029 |
d->bsc_bcr2 = idata & 0x3ffd; |
1030 |
else |
1031 |
odata = d->bsc_bcr2; |
1032 |
break; |
1033 |
|
1034 |
case SH4_WCR1: |
1035 |
if (writeflag == MEM_WRITE) |
1036 |
d->bsc_wcr1 = idata & 0x77777777; |
1037 |
else |
1038 |
odata = d->bsc_wcr1; |
1039 |
break; |
1040 |
|
1041 |
case SH4_WCR2: |
1042 |
if (writeflag == MEM_WRITE) |
1043 |
d->bsc_wcr2 = idata & 0xfffeefff; |
1044 |
else |
1045 |
odata = d->bsc_wcr2; |
1046 |
break; |
1047 |
|
1048 |
case SH4_MCR: |
1049 |
if (writeflag == MEM_WRITE) |
1050 |
d->bsc_mcr = idata & 0xf8bbffff; |
1051 |
else |
1052 |
odata = d->bsc_mcr; |
1053 |
break; |
1054 |
|
1055 |
case SH4_RTCSR: |
1056 |
/* |
1057 |
* Refresh Time Control/Status Register. Called RTCSR in |
1058 |
* NetBSD, but RTSCR in the SH7750 manual? |
1059 |
*/ |
1060 |
if (writeflag == MEM_WRITE) { |
1061 |
idata &= 0x00ff; |
1062 |
if (idata & RTCSR_CMF) { |
1063 |
idata = (idata & ~RTCSR_CMF) |
1064 |
| (d->bsc_rtcsr & RTCSR_CMF); |
1065 |
} |
1066 |
d->bsc_rtcsr = idata & 0x00ff; |
1067 |
} else |
1068 |
odata = d->bsc_rtcsr; |
1069 |
break; |
1070 |
|
1071 |
case SH4_RTCOR: |
1072 |
/* Refresh Time Constant Register (8 bits): */ |
1073 |
if (writeflag == MEM_WRITE) |
1074 |
d->bsc_rtcor = idata & 0x00ff; |
1075 |
else |
1076 |
odata = d->bsc_rtcor & 0x00ff; |
1077 |
break; |
1078 |
|
1079 |
case SH4_RFCR: |
1080 |
/* Refresh Count Register (10 bits): */ |
1081 |
if (writeflag == MEM_WRITE) |
1082 |
d->bsc_rfcr = idata & 0x03ff; |
1083 |
else |
1084 |
odata = d->bsc_rfcr & 0x03ff; |
1085 |
break; |
1086 |
|
1087 |
|
1088 |
/*******************************************/ |
1089 |
/* GPIO: General-purpose I/O controller */ |
1090 |
|
1091 |
case SH4_PCTRA: |
1092 |
if (writeflag == MEM_WRITE) |
1093 |
d->pctra = idata; |
1094 |
else |
1095 |
odata = d->pctra; |
1096 |
break; |
1097 |
|
1098 |
case SH4_PDTRA: |
1099 |
if (writeflag == MEM_WRITE) { |
1100 |
debug("[ sh4: pdtra: write: TODO ]\n"); |
1101 |
d->pdtra = idata; |
1102 |
} else { |
1103 |
debug("[ sh4: pdtra: read: TODO ]\n"); |
1104 |
odata = d->pdtra; |
1105 |
} |
1106 |
break; |
1107 |
|
1108 |
case SH4_PCTRB: |
1109 |
if (writeflag == MEM_WRITE) |
1110 |
d->pctrb = idata; |
1111 |
else |
1112 |
odata = d->pctrb; |
1113 |
break; |
1114 |
|
1115 |
case SH4_PDTRB: |
1116 |
if (writeflag == MEM_WRITE) { |
1117 |
debug("[ sh4: pdtrb: write: TODO ]\n"); |
1118 |
d->pdtrb = idata; |
1119 |
} else { |
1120 |
debug("[ sh4: pdtrb: read: TODO ]\n"); |
1121 |
odata = d->pdtrb; |
1122 |
} |
1123 |
break; |
1124 |
|
1125 |
|
1126 |
/****************************/ |
1127 |
/* SCI: Serial Interface */ |
1128 |
|
1129 |
case SHREG_SCSPTR: |
1130 |
odata = sh_sci_access(d, cpu, |
1131 |
writeflag == MEM_WRITE? 1 : 0, idata); |
1132 |
break; |
1133 |
|
1134 |
|
1135 |
/*********************************/ |
1136 |
/* INTC: Interrupt Controller */ |
1137 |
|
1138 |
case SH4_ICR: |
1139 |
if (writeflag == MEM_WRITE) { |
1140 |
if (idata & 0x80) { |
1141 |
fatal("SH4 INTC: IRLM not yet " |
1142 |
"supported. TODO\n"); |
1143 |
exit(1); |
1144 |
} |
1145 |
} |
1146 |
break; |
1147 |
|
1148 |
case SH4_IPRA: |
1149 |
if (writeflag == MEM_READ) |
1150 |
odata = cpu->cd.sh.intc_ipra; |
1151 |
else { |
1152 |
cpu->cd.sh.intc_ipra = idata; |
1153 |
sh_update_interrupt_priorities(cpu); |
1154 |
} |
1155 |
break; |
1156 |
|
1157 |
case SH4_IPRB: |
1158 |
if (writeflag == MEM_READ) |
1159 |
odata = cpu->cd.sh.intc_iprb; |
1160 |
else { |
1161 |
cpu->cd.sh.intc_iprb = idata; |
1162 |
sh_update_interrupt_priorities(cpu); |
1163 |
} |
1164 |
break; |
1165 |
|
1166 |
case SH4_IPRC: |
1167 |
if (writeflag == MEM_READ) |
1168 |
odata = cpu->cd.sh.intc_iprc; |
1169 |
else { |
1170 |
cpu->cd.sh.intc_iprc = idata; |
1171 |
sh_update_interrupt_priorities(cpu); |
1172 |
} |
1173 |
break; |
1174 |
|
1175 |
case SH4_IPRD: |
1176 |
if (writeflag == MEM_READ) |
1177 |
odata = cpu->cd.sh.intc_iprd; |
1178 |
else { |
1179 |
cpu->cd.sh.intc_iprd = idata; |
1180 |
sh_update_interrupt_priorities(cpu); |
1181 |
} |
1182 |
break; |
1183 |
|
1184 |
case SH4_INTPRI00: |
1185 |
if (writeflag == MEM_READ) |
1186 |
odata = cpu->cd.sh.intc_intpri00; |
1187 |
else { |
1188 |
cpu->cd.sh.intc_intpri00 = idata; |
1189 |
sh_update_interrupt_priorities(cpu); |
1190 |
} |
1191 |
break; |
1192 |
|
1193 |
case SH4_INTPRI00 + 4: |
1194 |
if (writeflag == MEM_READ) |
1195 |
odata = cpu->cd.sh.intc_intpri04; |
1196 |
else { |
1197 |
cpu->cd.sh.intc_intpri04 = idata; |
1198 |
sh_update_interrupt_priorities(cpu); |
1199 |
} |
1200 |
break; |
1201 |
|
1202 |
case SH4_INTPRI00 + 8: |
1203 |
if (writeflag == MEM_READ) |
1204 |
odata = cpu->cd.sh.intc_intpri08; |
1205 |
else { |
1206 |
cpu->cd.sh.intc_intpri08 = idata; |
1207 |
sh_update_interrupt_priorities(cpu); |
1208 |
} |
1209 |
break; |
1210 |
|
1211 |
case SH4_INTPRI00 + 0xc: |
1212 |
if (writeflag == MEM_READ) |
1213 |
odata = cpu->cd.sh.intc_intpri0c; |
1214 |
else { |
1215 |
cpu->cd.sh.intc_intpri0c = idata; |
1216 |
sh_update_interrupt_priorities(cpu); |
1217 |
} |
1218 |
break; |
1219 |
|
1220 |
case SH4_INTMSK00: |
1221 |
/* Note: Writes can only set bits, not clear them. */ |
1222 |
if (writeflag == MEM_READ) |
1223 |
odata = cpu->cd.sh.intc_intmsk00; |
1224 |
else |
1225 |
cpu->cd.sh.intc_intmsk00 |= idata; |
1226 |
break; |
1227 |
|
1228 |
case SH4_INTMSK00 + 4: |
1229 |
/* Note: Writes can only set bits, not clear them. */ |
1230 |
if (writeflag == MEM_READ) |
1231 |
odata = cpu->cd.sh.intc_intmsk04; |
1232 |
else |
1233 |
cpu->cd.sh.intc_intmsk04 |= idata; |
1234 |
break; |
1235 |
|
1236 |
case SH4_INTMSKCLR00: |
1237 |
/* Note: Writes can only clear bits, not set them. */ |
1238 |
if (writeflag == MEM_WRITE) |
1239 |
cpu->cd.sh.intc_intmsk00 &= ~idata; |
1240 |
break; |
1241 |
|
1242 |
case SH4_INTMSKCLR00 + 4: |
1243 |
/* Note: Writes can only clear bits, not set them. */ |
1244 |
if (writeflag == MEM_WRITE) |
1245 |
cpu->cd.sh.intc_intmsk04 &= ~idata; |
1246 |
break; |
1247 |
|
1248 |
|
1249 |
/*************************************************/ |
1250 |
/* SCIF: Serial Controller Interface with FIFO */ |
1251 |
|
1252 |
case SH4_SCIF_BASE + SCIF_SMR: |
1253 |
if (writeflag == MEM_WRITE) { |
1254 |
d->scif_smr = idata; |
1255 |
} else { |
1256 |
odata = d->scif_smr; |
1257 |
} |
1258 |
break; |
1259 |
|
1260 |
case SH4_SCIF_BASE + SCIF_BRR: |
1261 |
if (writeflag == MEM_WRITE) { |
1262 |
d->scif_brr = idata; |
1263 |
} else { |
1264 |
odata = d->scif_brr; |
1265 |
} |
1266 |
break; |
1267 |
|
1268 |
case SH4_SCIF_BASE + SCIF_SCR: |
1269 |
if (writeflag == MEM_WRITE) { |
1270 |
d->scif_scr = idata; |
1271 |
scif_reassert_interrupts(d); |
1272 |
} else { |
1273 |
odata = d->scif_scr; |
1274 |
} |
1275 |
break; |
1276 |
|
1277 |
case SH4_SCIF_BASE + SCIF_FTDR: |
1278 |
if (writeflag == MEM_WRITE) { |
1279 |
/* Add to TX fifo: */ |
1280 |
if (d->scif_tx_fifo_cursize >= sizeof( |
1281 |
d->scif_tx_fifo)) { |
1282 |
fatal("[ SCIF TX fifo overrun! ]\n"); |
1283 |
d->scif_tx_fifo_cursize = 0; |
1284 |
} |
1285 |
|
1286 |
d->scif_tx_fifo[d->scif_tx_fifo_cursize++] = idata; |
1287 |
d->scif_delayed_tx = 2; |
1288 |
} |
1289 |
break; |
1290 |
|
1291 |
case SH4_SCIF_BASE + SCIF_SSR: |
1292 |
if (writeflag == MEM_READ) { |
1293 |
odata = d->scif_ssr; |
1294 |
} else { |
1295 |
d->scif_ssr = idata; |
1296 |
scif_reassert_interrupts(d); |
1297 |
} |
1298 |
break; |
1299 |
|
1300 |
case SH4_SCIF_BASE + SCIF_FRDR: |
1301 |
{ |
1302 |
int x = console_readchar(d->scif_console_handle); |
1303 |
if (x == 13) |
1304 |
x = 10; |
1305 |
odata = x < 0? 0 : x; |
1306 |
if (console_charavail(d->scif_console_handle)) |
1307 |
d->scif_ssr |= SCSSR2_DR; |
1308 |
else |
1309 |
d->scif_ssr &= ~SCSSR2_DR; |
1310 |
scif_reassert_interrupts(d); |
1311 |
} |
1312 |
break; |
1313 |
|
1314 |
case SH4_SCIF_BASE + SCIF_FCR: |
1315 |
if (writeflag == MEM_WRITE) { |
1316 |
d->scif_fcr = idata; |
1317 |
} else { |
1318 |
odata = d->scif_fcr; |
1319 |
} |
1320 |
break; |
1321 |
|
1322 |
case SH4_SCIF_BASE + SCIF_LSR: |
1323 |
/* TODO: Implement all bits. */ |
1324 |
odata = 0; |
1325 |
break; |
1326 |
|
1327 |
case SH4_SCIF_BASE + SCIF_FDR: |
1328 |
odata = (console_charavail(d->scif_console_handle)? 1 : 0) |
1329 |
+ (d->scif_tx_fifo_cursize << 8); |
1330 |
break; |
1331 |
|
1332 |
|
1333 |
/*************************************************/ |
1334 |
|
1335 |
case SH4_RSECCNT: |
1336 |
case SH4_RMINCNT: |
1337 |
case SH4_RHRCNT: |
1338 |
case SH4_RWKCNT: |
1339 |
case SH4_RDAYCNT: |
1340 |
case SH4_RMONCNT: |
1341 |
case SH4_RYRCNT: |
1342 |
case SH4_RSECAR: |
1343 |
case SH4_RMINAR: |
1344 |
case SH4_RHRAR: |
1345 |
case SH4_RWKAR: |
1346 |
case SH4_RDAYAR: |
1347 |
case SH4_RMONAR: |
1348 |
if (writeflag == MEM_WRITE) { |
1349 |
d->rtc_reg[(relative_addr - 0xffc80000) / 4] = idata; |
1350 |
} else { |
1351 |
/* TODO: Update rtc_reg based on host's date/time. */ |
1352 |
odata = d->rtc_reg[(relative_addr - 0xffc80000) / 4]; |
1353 |
} |
1354 |
break; |
1355 |
|
1356 |
case SH4_RCR1: |
1357 |
if (writeflag == MEM_READ) |
1358 |
odata = d->rtc_rcr1; |
1359 |
else { |
1360 |
d->rtc_rcr1 = idata; |
1361 |
if (idata & 0x18) { |
1362 |
fatal("SH4: TODO: RTC interrupt enable\n"); |
1363 |
exit(1); |
1364 |
} |
1365 |
} |
1366 |
break; |
1367 |
|
1368 |
|
1369 |
/*************************************************/ |
1370 |
|
1371 |
default:if (writeflag == MEM_READ) { |
1372 |
fatal("[ sh4: read from addr 0x%x ]\n", |
1373 |
(int)relative_addr); |
1374 |
} else { |
1375 |
fatal("[ sh4: write to addr 0x%x: 0x%x ]\n", |
1376 |
(int)relative_addr, (int)idata); |
1377 |
} |
1378 |
#ifdef SH4_DEGUG |
1379 |
// exit(1); |
1380 |
#endif |
1381 |
} |
1382 |
|
1383 |
if (writeflag == MEM_READ) |
1384 |
memory_writemax64(cpu, data, len, odata); |
1385 |
|
1386 |
return 1; |
1387 |
} |
1388 |
|
1389 |
|
1390 |
DEVINIT(sh4) |
1391 |
{ |
1392 |
char tmp[200]; |
1393 |
struct machine *machine = devinit->machine; |
1394 |
struct sh4_data *d = malloc(sizeof(struct sh4_data)); |
1395 |
if (d == NULL) { |
1396 |
fprintf(stderr, "out of memory\n"); |
1397 |
exit(1); |
1398 |
} |
1399 |
memset(d, 0, sizeof(struct sh4_data)); |
1400 |
|
1401 |
d->scif_console_handle = console_start_slave(devinit->machine, |
1402 |
"SH4 SCIF", 1); |
1403 |
|
1404 |
snprintf(tmp, sizeof(tmp), "%s.irq[0x%x]", |
1405 |
devinit->interrupt_path, SH4_INTEVT_SCIF_RXI); |
1406 |
INTERRUPT_CONNECT(tmp, d->scif_rx_irq); |
1407 |
snprintf(tmp, sizeof(tmp), "%s.irq[0x%x]", |
1408 |
devinit->interrupt_path, SH4_INTEVT_SCIF_TXI); |
1409 |
INTERRUPT_CONNECT(tmp, d->scif_tx_irq); |
1410 |
|
1411 |
memory_device_register(machine->memory, devinit->name, |
1412 |
SH4_REG_BASE, 0x01000000, dev_sh4_access, d, DM_DEFAULT, NULL); |
1413 |
|
1414 |
/* On-chip RAM/cache: */ |
1415 |
dev_ram_init(machine, 0x1e000000, 0x8000, DEV_RAM_RAM, 0x0); |
1416 |
|
1417 |
/* 0xe0000000: Store queues: */ |
1418 |
dev_ram_init(machine, 0xe0000000, 32 * 2, DEV_RAM_RAM, 0x0); |
1419 |
|
1420 |
/* |
1421 |
* 0xf0000000 SH4_CCIA I-Cache address array |
1422 |
* 0xf1000000 SH4_CCID I-Cache data array |
1423 |
* 0xf4000000 SH4_CCDA D-Cache address array |
1424 |
* 0xf5000000 SH4_CCDD D-Cache data array |
1425 |
* |
1426 |
* TODO: Implement more correct cache behaviour? |
1427 |
*/ |
1428 |
dev_ram_init(machine, SH4_CCIA, SH4_ICACHE_SIZE * 2, DEV_RAM_RAM, 0x0); |
1429 |
dev_ram_init(machine, SH4_CCID, SH4_ICACHE_SIZE, DEV_RAM_RAM, 0x0); |
1430 |
dev_ram_init(machine, SH4_CCDA, SH4_DCACHE_SIZE * 2, DEV_RAM_RAM, 0x0); |
1431 |
dev_ram_init(machine, SH4_CCDD, SH4_DCACHE_SIZE, DEV_RAM_RAM, 0x0); |
1432 |
|
1433 |
/* 0xf2000000 SH4_ITLB_AA */ |
1434 |
memory_device_register(machine->memory, devinit->name, SH4_ITLB_AA, |
1435 |
0x01000000, dev_sh4_itlb_aa_access, d, DM_DEFAULT, NULL); |
1436 |
|
1437 |
/* 0xf3000000 SH4_ITLB_DA1 */ |
1438 |
memory_device_register(machine->memory, devinit->name, SH4_ITLB_DA1, |
1439 |
0x01000000, dev_sh4_itlb_da1_access, d, DM_DEFAULT, NULL); |
1440 |
|
1441 |
/* 0xf6000000 SH4_UTLB_AA */ |
1442 |
memory_device_register(machine->memory, devinit->name, SH4_UTLB_AA, |
1443 |
0x01000000, dev_sh4_utlb_aa_access, d, DM_DEFAULT, NULL); |
1444 |
|
1445 |
/* 0xf7000000 SH4_UTLB_DA1 */ |
1446 |
memory_device_register(machine->memory, devinit->name, SH4_UTLB_DA1, |
1447 |
0x01000000, dev_sh4_utlb_da1_access, d, DM_DEFAULT, NULL); |
1448 |
|
1449 |
d->sh4_timer = timer_add(SH4_PSEUDO_TIMER_HZ, sh4_timer_tick, d); |
1450 |
machine_add_tickfunction(devinit->machine, dev_sh4_tick, d, |
1451 |
SH4_TICK_SHIFT, 0.0); |
1452 |
|
1453 |
/* Initial Timer values, according to the SH7750 manual: */ |
1454 |
d->tcor[0] = 0xffffffff; d->tcnt[0] = 0xffffffff; |
1455 |
d->tcor[1] = 0xffffffff; d->tcnt[1] = 0xffffffff; |
1456 |
d->tcor[2] = 0xffffffff; d->tcnt[2] = 0xffffffff; |
1457 |
|
1458 |
snprintf(tmp, sizeof(tmp), "emul[0].machine[0].cpu[0].irq[0x%x]", |
1459 |
SH_INTEVT_TMU0_TUNI0); |
1460 |
if (!interrupt_handler_lookup(tmp, &d->timer_irq[0])) { |
1461 |
fatal("Could not find interrupt '%s'.\n", tmp); |
1462 |
exit(1); |
1463 |
} |
1464 |
snprintf(tmp, sizeof(tmp), "emul[0].machine[0].cpu[0].irq[0x%x]", |
1465 |
SH_INTEVT_TMU1_TUNI1); |
1466 |
if (!interrupt_handler_lookup(tmp, &d->timer_irq[1])) { |
1467 |
fatal("Could not find interrupt '%s'.\n", tmp); |
1468 |
exit(1); |
1469 |
} |
1470 |
snprintf(tmp, sizeof(tmp), "emul[0].machine[0].cpu[0].irq[0x%x]", |
1471 |
SH_INTEVT_TMU2_TUNI2); |
1472 |
if (!interrupt_handler_lookup(tmp, &d->timer_irq[2])) { |
1473 |
fatal("Could not find interrupt '%s'.\n", tmp); |
1474 |
exit(1); |
1475 |
} |
1476 |
|
1477 |
/* |
1478 |
* Bus State Controller initial values, according to the |
1479 |
* SH7760 manual: |
1480 |
*/ |
1481 |
d->bsc_bcr2 = 0x3ffc; |
1482 |
d->bsc_wcr1 = 0x77777777; |
1483 |
d->bsc_wcr2 = 0xfffeefff; |
1484 |
|
1485 |
return 1; |
1486 |
} |
1487 |
|