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/*
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* SH7750 device
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*
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* Copyright (c) 2005 Samuel Tardieu
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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 <stdio.h> |
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#include <assert.h> |
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#include "vl.h" |
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#include "sh7750_regs.h" |
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#include "sh7750_regnames.h" |
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|
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typedef struct { |
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uint8_t data[16];
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uint8_t length; /* Number of characters in the FIFO */
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uint8_t write_idx; /* Index of first character to write */
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uint8_t read_idx; /* Index of first character to read */
|
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} fifo; |
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|
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#define NB_DEVICES 4 |
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|
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typedef struct SH7750State { |
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/* CPU */
|
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CPUSH4State *cpu; |
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/* Peripheral frequency in Hz */
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uint32_t periph_freq; |
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/* SDRAM controller */
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uint16_t rfcr; |
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/* First serial port */
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CharDriverState *serial1; |
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uint8_t scscr1; |
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uint8_t scsmr1; |
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uint8_t scbrr1; |
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uint8_t scssr1; |
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uint8_t scssr1_read; |
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uint8_t sctsr1; |
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uint8_t sctsr1_loaded; |
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uint8_t sctdr1; |
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uint8_t scrdr1; |
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/* Second serial port */
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CharDriverState *serial2; |
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uint16_t sclsr2; |
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uint16_t scscr2; |
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uint16_t scfcr2; |
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uint16_t scfsr2; |
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uint16_t scsmr2; |
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uint8_t scbrr2; |
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fifo serial2_receive_fifo; |
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fifo serial2_transmit_fifo; |
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/* Timers */
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uint8_t tstr; |
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/* Timer 0 */
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QEMUTimer *timer0; |
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uint16_t tcr0; |
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uint32_t tcor0; |
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uint32_t tcnt0; |
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/* IO ports */
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uint16_t gpioic; |
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uint32_t pctra; |
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uint32_t pctrb; |
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uint16_t portdira; /* Cached */
|
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uint16_t portpullupa; /* Cached */
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uint16_t portdirb; /* Cached */
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uint16_t portpullupb; /* Cached */
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uint16_t pdtra; |
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uint16_t pdtrb; |
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uint16_t periph_pdtra; /* Imposed by the peripherals */
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uint16_t periph_portdira; /* Direction seen from the peripherals */
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uint16_t periph_pdtrb; /* Imposed by the peripherals */
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uint16_t periph_portdirb; /* Direction seen from the peripherals */
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sh7750_io_device *devices[NB_DEVICES]; /* External peripherals */
|
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/* Cache */
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uint32_t ccr; |
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} SH7750State; |
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|
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/**********************************************************************
|
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Timers
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**********************************************************************/
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|
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/* XXXXX At this time, timer0 works in underflow only mode, that is
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the value of tcnt0 is read at alarm computation time and cannot
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be read back by the guest OS */
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|
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static void start_timer0(SH7750State * s) |
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{
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uint64_t now, next, prescaler; |
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|
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if ((s->tcr0 & 6) == 6) { |
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fprintf(stderr, "rtc clock for timer 0 not supported\n");
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assert(0);
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} |
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|
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if ((s->tcr0 & 7) == 5) { |
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fprintf(stderr, "timer 0 configuration not supported\n");
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assert(0);
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} |
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|
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if ((s->tcr0 & 4) == 4) |
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prescaler = 1024;
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else
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prescaler = 4 << (s->tcr0 & 3); |
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|
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now = qemu_get_clock(vm_clock); |
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/* XXXXX */
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next = |
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now + muldiv64(prescaler * s->tcnt0, ticks_per_sec, |
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s->periph_freq); |
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if (next == now)
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next = now + 1;
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fprintf(stderr, "now=%016" PRIx64 ", next=%016" PRIx64 "\n", now, next); |
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fprintf(stderr, "timer will underflow in %f seconds\n",
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(float) (next - now) / (float) ticks_per_sec); |
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|
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qemu_mod_timer(s->timer0, next); |
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} |
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|
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static void timer_start_changed(SH7750State * s) |
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{
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if (s->tstr & SH7750_TSTR_STR0) {
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start_timer0(s); |
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} else {
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fprintf(stderr, "timer 0 is stopped\n");
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qemu_del_timer(s->timer0); |
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} |
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} |
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|
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static void timer0_cb(void *opaque) |
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{
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SH7750State *s = opaque; |
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|
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s->tcnt0 = (uint32_t) 0; /* XXXXX */ |
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if (--s->tcnt0 == (uint32_t) - 1) { |
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fprintf(stderr, "timer 0 underflow\n");
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s->tcnt0 = s->tcor0; |
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s->tcr0 |= SH7750_TCR_UNF; |
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if (s->tcr0 & SH7750_TCR_UNIE) {
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fprintf(stderr, |
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"interrupt generation for timer 0 not supported\n");
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assert(0);
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} |
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} |
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start_timer0(s); |
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} |
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|
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static void init_timers(SH7750State * s) |
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{
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s->tcor0 = 0xffffffff;
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s->tcnt0 = 0xffffffff;
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s->timer0 = qemu_new_timer(vm_clock, &timer0_cb, s); |
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} |
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|
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/**********************************************************************
|
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First serial port
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**********************************************************************/
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|
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static int serial1_can_receive(void *opaque) |
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{
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SH7750State *s = opaque; |
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|
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return s->scscr1 & SH7750_SCSCR_RE;
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} |
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|
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static void serial1_receive_char(SH7750State * s, uint8_t c) |
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{
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if (s->scssr1 & SH7750_SCSSR1_RDRF) {
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s->scssr1 |= SH7750_SCSSR1_ORER; |
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return;
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} |
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|
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s->scrdr1 = c; |
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s->scssr1 |= SH7750_SCSSR1_RDRF; |
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} |
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|
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static void serial1_receive(void *opaque, const uint8_t * buf, int size) |
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{
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SH7750State *s = opaque; |
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int i;
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|
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for (i = 0; i < size; i++) { |
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serial1_receive_char(s, buf[i]); |
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} |
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} |
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|
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static void serial1_event(void *opaque, int event) |
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{
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assert(0);
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} |
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|
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static void serial1_maybe_send(SH7750State * s) |
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{
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uint8_t c; |
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if (s->scssr1 & SH7750_SCSSR1_TDRE)
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return;
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c = s->sctdr1; |
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s->scssr1 |= SH7750_SCSSR1_TDRE | SH7750_SCSSR1_TEND; |
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if (s->scscr1 & SH7750_SCSCR_TIE) {
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fprintf(stderr, "interrupts for serial port 1 not implemented\n");
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assert(0);
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} |
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/* XXXXX Check for errors in write */
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qemu_chr_write(s->serial1, &c, 1);
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} |
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|
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static void serial1_change_scssr1(SH7750State * s, uint8_t mem_value) |
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{
|
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uint8_t new_flags; |
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|
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/* If transmit disable, TDRE and TEND stays up */
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if ((s->scscr1 & SH7750_SCSCR_TE) == 0) { |
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mem_value |= SH7750_SCSSR1_TDRE | SH7750_SCSSR1_TEND; |
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} |
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|
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/* Only clear bits which have been read before and do not set any bit
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in the flags */
|
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new_flags = s->scssr1 & ~s->scssr1_read; /* Preserve unread flags */
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new_flags &= mem_value | ~s->scssr1_read; /* Clear read flags */
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|
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s->scssr1 = (new_flags & 0xf8) | (mem_value & 1); |
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s->scssr1_read &= mem_value; |
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|
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/* If TDRE has been cleared, TEND will also be cleared */
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if ((s->scssr1 & SH7750_SCSSR1_TDRE) == 0) { |
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s->scssr1 &= ~SH7750_SCSSR1_TEND; |
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} |
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|
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/* Check for transmission to start */
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serial1_maybe_send(s); |
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} |
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|
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static void serial1_update_parameters(SH7750State * s) |
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{
|
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QEMUSerialSetParams ssp; |
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|
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if (s->scsmr1 & SH7750_SCSMR_CHR_7)
|
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ssp.data_bits = 7;
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else
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ssp.data_bits = 8;
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if (s->scsmr1 & SH7750_SCSMR_PE) {
|
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if (s->scsmr1 & SH7750_SCSMR_PM_ODD)
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ssp.parity = 'O';
|
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else
|
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ssp.parity = 'E';
|
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} else
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ssp.parity = 'N';
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if (s->scsmr1 & SH7750_SCSMR_STOP_2)
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ssp.stop_bits = 2;
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else
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ssp.stop_bits = 1;
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fprintf(stderr, "SCSMR1=%04x SCBRR1=%02x\n", s->scsmr1, s->scbrr1);
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ssp.speed = s->periph_freq / |
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(32 * s->scbrr1 * (1 << (2 * (s->scsmr1 & 3)))) - 1; |
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fprintf(stderr, "data bits=%d, stop bits=%d, parity=%c, speed=%d\n",
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ssp.data_bits, ssp.stop_bits, ssp.parity, ssp.speed); |
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qemu_chr_ioctl(s->serial1, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp); |
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} |
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|
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static void scscr1_changed(SH7750State * s) |
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{
|
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if (s->scscr1 & (SH7750_SCSCR_TE | SH7750_SCSCR_RE)) {
|
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if (!s->serial1) {
|
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fprintf(stderr, "serial port 1 not bound to anything\n");
|
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assert(0);
|
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} |
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serial1_update_parameters(s); |
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} |
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if ((s->scscr1 & SH7750_SCSCR_RE) == 0) { |
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s->scssr1 |= SH7750_SCSSR1_TDRE; |
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} |
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} |
| 288 |
|
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static void init_serial1(SH7750State * s, int serial_nb) |
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{
|
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CharDriverState *chr; |
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|
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s->scssr1 = 0x84;
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chr = serial_hds[serial_nb]; |
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if (!chr) {
|
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fprintf(stderr, |
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"no serial port associated to SH7750 first serial port\n");
|
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return;
|
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} |
| 300 |
|
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s->serial1 = chr; |
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qemu_chr_add_handlers(chr, serial1_can_receive, |
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serial1_receive, serial1_event, s); |
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} |
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|
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/**********************************************************************
|
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Second serial port
|
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**********************************************************************/
|
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|
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static int serial2_can_receive(void *opaque) |
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{
|
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SH7750State *s = opaque; |
| 313 |
static uint8_t max_fifo_size[] = { 15, 1, 4, 6, 8, 10, 12, 14 }; |
| 314 |
|
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return s->serial2_receive_fifo.length <
|
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max_fifo_size[(s->scfcr2 >> 9) & 7]; |
| 317 |
} |
| 318 |
|
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static void serial2_adjust_receive_flags(SH7750State * s) |
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{
|
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static uint8_t max_fifo_size[] = { 1, 4, 8, 14 }; |
| 322 |
|
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/* XXXXX Add interrupt generation */
|
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if (s->serial2_receive_fifo.length >=
|
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max_fifo_size[(s->scfcr2 >> 7) & 3]) { |
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s->scfsr2 |= SH7750_SCFSR2_RDF; |
| 327 |
s->scfsr2 &= ~SH7750_SCFSR2_DR; |
| 328 |
} else {
|
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s->scfsr2 &= ~SH7750_SCFSR2_RDF; |
| 330 |
if (s->serial2_receive_fifo.length > 0) |
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s->scfsr2 |= SH7750_SCFSR2_DR; |
| 332 |
else
|
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s->scfsr2 &= ~SH7750_SCFSR2_DR; |
| 334 |
} |
| 335 |
} |
| 336 |
|
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static void serial2_append_char(SH7750State * s, uint8_t c) |
| 338 |
{
|
| 339 |
if (s->serial2_receive_fifo.length == 16) { |
| 340 |
/* Overflow */
|
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s->sclsr2 |= SH7750_SCLSR2_ORER; |
| 342 |
return;
|
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} |
| 344 |
|
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s->serial2_receive_fifo.data[s->serial2_receive_fifo.write_idx++] = c; |
| 346 |
s->serial2_receive_fifo.length++; |
| 347 |
serial2_adjust_receive_flags(s); |
| 348 |
} |
| 349 |
|
| 350 |
static void serial2_receive(void *opaque, const uint8_t * buf, int size) |
| 351 |
{
|
| 352 |
SH7750State *s = opaque; |
| 353 |
int i;
|
| 354 |
|
| 355 |
for (i = 0; i < size; i++) |
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serial2_append_char(s, buf[i]); |
| 357 |
} |
| 358 |
|
| 359 |
static void serial2_event(void *opaque, int event) |
| 360 |
{
|
| 361 |
/* XXXXX */
|
| 362 |
assert(0);
|
| 363 |
} |
| 364 |
|
| 365 |
static void serial2_update_parameters(SH7750State * s) |
| 366 |
{
|
| 367 |
QEMUSerialSetParams ssp; |
| 368 |
|
| 369 |
if (s->scsmr2 & SH7750_SCSMR_CHR_7)
|
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ssp.data_bits = 7;
|
| 371 |
else
|
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ssp.data_bits = 8;
|
| 373 |
if (s->scsmr2 & SH7750_SCSMR_PE) {
|
| 374 |
if (s->scsmr2 & SH7750_SCSMR_PM_ODD)
|
| 375 |
ssp.parity = 'O';
|
| 376 |
else
|
| 377 |
ssp.parity = 'E';
|
| 378 |
} else
|
| 379 |
ssp.parity = 'N';
|
| 380 |
if (s->scsmr2 & SH7750_SCSMR_STOP_2)
|
| 381 |
ssp.stop_bits = 2;
|
| 382 |
else
|
| 383 |
ssp.stop_bits = 1;
|
| 384 |
fprintf(stderr, "SCSMR2=%04x SCBRR2=%02x\n", s->scsmr2, s->scbrr2);
|
| 385 |
ssp.speed = s->periph_freq / |
| 386 |
(32 * s->scbrr2 * (1 << (2 * (s->scsmr2 & 3)))) - 1; |
| 387 |
fprintf(stderr, "data bits=%d, stop bits=%d, parity=%c, speed=%d\n",
|
| 388 |
ssp.data_bits, ssp.stop_bits, ssp.parity, ssp.speed); |
| 389 |
qemu_chr_ioctl(s->serial2, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp); |
| 390 |
} |
| 391 |
|
| 392 |
static void scscr2_changed(SH7750State * s) |
| 393 |
{
|
| 394 |
if (s->scscr2 & (SH7750_SCSCR_TE | SH7750_SCSCR_RE)) {
|
| 395 |
if (!s->serial2) {
|
| 396 |
fprintf(stderr, "serial port 2 not bound to anything\n");
|
| 397 |
assert(0);
|
| 398 |
} |
| 399 |
serial2_update_parameters(s); |
| 400 |
} |
| 401 |
} |
| 402 |
|
| 403 |
static void init_serial2(SH7750State * s, int serial_nb) |
| 404 |
{
|
| 405 |
CharDriverState *chr; |
| 406 |
|
| 407 |
s->scfsr2 = 0x0060;
|
| 408 |
|
| 409 |
chr = serial_hds[serial_nb]; |
| 410 |
if (!chr) {
|
| 411 |
fprintf(stderr, |
| 412 |
"no serial port associated to SH7750 second serial port\n");
|
| 413 |
return;
|
| 414 |
} |
| 415 |
|
| 416 |
s->serial2 = chr; |
| 417 |
qemu_chr_add_handlers(chr, serial2_can_receive, |
| 418 |
serial2_receive, serial1_event, s); |
| 419 |
} |
| 420 |
|
| 421 |
static void init_serial_ports(SH7750State * s) |
| 422 |
{
|
| 423 |
init_serial1(s, 0);
|
| 424 |
init_serial2(s, 1);
|
| 425 |
} |
| 426 |
|
| 427 |
/**********************************************************************
|
| 428 |
I/O ports
|
| 429 |
**********************************************************************/
|
| 430 |
|
| 431 |
int sh7750_register_io_device(SH7750State * s, sh7750_io_device * device)
|
| 432 |
{
|
| 433 |
int i;
|
| 434 |
|
| 435 |
for (i = 0; i < NB_DEVICES; i++) { |
| 436 |
if (s->devices[i] == NULL) { |
| 437 |
s->devices[i] = device; |
| 438 |
return 0; |
| 439 |
} |
| 440 |
} |
| 441 |
return -1; |
| 442 |
} |
| 443 |
|
| 444 |
static uint16_t portdir(uint32_t v)
|
| 445 |
{
|
| 446 |
#define EVENPORTMASK(n) ((v & (1<<((n)<<1))) >> (n)) |
| 447 |
return
|
| 448 |
EVENPORTMASK(15) | EVENPORTMASK(14) | EVENPORTMASK(13) | |
| 449 |
EVENPORTMASK(12) | EVENPORTMASK(11) | EVENPORTMASK(10) | |
| 450 |
EVENPORTMASK(9) | EVENPORTMASK(8) | EVENPORTMASK(7) | |
| 451 |
EVENPORTMASK(6) | EVENPORTMASK(5) | EVENPORTMASK(4) | |
| 452 |
EVENPORTMASK(3) | EVENPORTMASK(2) | EVENPORTMASK(1) | |
| 453 |
EVENPORTMASK(0);
|
| 454 |
} |
| 455 |
|
| 456 |
static uint16_t portpullup(uint32_t v)
|
| 457 |
{
|
| 458 |
#define ODDPORTMASK(n) ((v & (1<<(((n)<<1)+1))) >> (n)) |
| 459 |
return
|
| 460 |
ODDPORTMASK(15) | ODDPORTMASK(14) | ODDPORTMASK(13) | |
| 461 |
ODDPORTMASK(12) | ODDPORTMASK(11) | ODDPORTMASK(10) | |
| 462 |
ODDPORTMASK(9) | ODDPORTMASK(8) | ODDPORTMASK(7) | ODDPORTMASK(6) | |
| 463 |
ODDPORTMASK(5) | ODDPORTMASK(4) | ODDPORTMASK(3) | ODDPORTMASK(2) | |
| 464 |
ODDPORTMASK(1) | ODDPORTMASK(0); |
| 465 |
} |
| 466 |
|
| 467 |
static uint16_t porta_lines(SH7750State * s)
|
| 468 |
{
|
| 469 |
return (s->portdira & s->pdtra) | /* CPU */ |
| 470 |
(s->periph_portdira & s->periph_pdtra) | /* Peripherals */
|
| 471 |
(~(s->portdira | s->periph_portdira) & s->portpullupa); /* Pullups */
|
| 472 |
} |
| 473 |
|
| 474 |
static uint16_t portb_lines(SH7750State * s)
|
| 475 |
{
|
| 476 |
return (s->portdirb & s->pdtrb) | /* CPU */ |
| 477 |
(s->periph_portdirb & s->periph_pdtrb) | /* Peripherals */
|
| 478 |
(~(s->portdirb | s->periph_portdirb) & s->portpullupb); /* Pullups */
|
| 479 |
} |
| 480 |
|
| 481 |
static void gen_port_interrupts(SH7750State * s) |
| 482 |
{
|
| 483 |
/* XXXXX interrupts not generated */
|
| 484 |
} |
| 485 |
|
| 486 |
static void porta_changed(SH7750State * s, uint16_t prev) |
| 487 |
{
|
| 488 |
uint16_t currenta, changes; |
| 489 |
int i, r = 0; |
| 490 |
|
| 491 |
#if 0
|
| 492 |
fprintf(stderr, "porta changed from 0x%04x to 0x%04x\n",
|
| 493 |
prev, porta_lines(s));
|
| 494 |
fprintf(stderr, "pdtra=0x%04x, pctra=0x%08x\n", s->pdtra, s->pctra);
|
| 495 |
#endif
|
| 496 |
currenta = porta_lines(s); |
| 497 |
if (currenta == prev)
|
| 498 |
return;
|
| 499 |
changes = currenta ^ prev; |
| 500 |
|
| 501 |
for (i = 0; i < NB_DEVICES; i++) { |
| 502 |
if (s->devices[i] && (s->devices[i]->portamask_trigger & changes)) {
|
| 503 |
r |= s->devices[i]->port_change_cb(currenta, portb_lines(s), |
| 504 |
&s->periph_pdtra, |
| 505 |
&s->periph_portdira, |
| 506 |
&s->periph_pdtrb, |
| 507 |
&s->periph_portdirb); |
| 508 |
} |
| 509 |
} |
| 510 |
|
| 511 |
if (r)
|
| 512 |
gen_port_interrupts(s); |
| 513 |
} |
| 514 |
|
| 515 |
static void portb_changed(SH7750State * s, uint16_t prev) |
| 516 |
{
|
| 517 |
uint16_t currentb, changes; |
| 518 |
int i, r = 0; |
| 519 |
|
| 520 |
currentb = portb_lines(s); |
| 521 |
if (currentb == prev)
|
| 522 |
return;
|
| 523 |
changes = currentb ^ prev; |
| 524 |
|
| 525 |
for (i = 0; i < NB_DEVICES; i++) { |
| 526 |
if (s->devices[i] && (s->devices[i]->portbmask_trigger & changes)) {
|
| 527 |
r |= s->devices[i]->port_change_cb(portb_lines(s), currentb, |
| 528 |
&s->periph_pdtra, |
| 529 |
&s->periph_portdira, |
| 530 |
&s->periph_pdtrb, |
| 531 |
&s->periph_portdirb); |
| 532 |
} |
| 533 |
} |
| 534 |
|
| 535 |
if (r)
|
| 536 |
gen_port_interrupts(s); |
| 537 |
} |
| 538 |
|
| 539 |
/**********************************************************************
|
| 540 |
Memory
|
| 541 |
**********************************************************************/
|
| 542 |
|
| 543 |
static void error_access(const char *kind, target_phys_addr_t addr) |
| 544 |
{
|
| 545 |
fprintf(stderr, "%s to %s (0x%08x) not supported\n",
|
| 546 |
kind, regname(addr), addr); |
| 547 |
} |
| 548 |
|
| 549 |
static void ignore_access(const char *kind, target_phys_addr_t addr) |
| 550 |
{
|
| 551 |
fprintf(stderr, "%s to %s (0x%08x) ignored\n",
|
| 552 |
kind, regname(addr), addr); |
| 553 |
} |
| 554 |
|
| 555 |
static uint32_t sh7750_mem_readb(void *opaque, target_phys_addr_t addr) |
| 556 |
{
|
| 557 |
SH7750State *s = opaque; |
| 558 |
uint8_t r; |
| 559 |
|
| 560 |
switch (addr) {
|
| 561 |
case SH7750_SCSSR1_A7:
|
| 562 |
r = s->scssr1; |
| 563 |
s->scssr1_read |= r; |
| 564 |
return s->scssr1;
|
| 565 |
case SH7750_SCRDR1_A7:
|
| 566 |
s->scssr1 &= ~SH7750_SCSSR1_RDRF; |
| 567 |
return s->scrdr1;
|
| 568 |
default:
|
| 569 |
error_access("byte read", addr);
|
| 570 |
assert(0);
|
| 571 |
} |
| 572 |
} |
| 573 |
|
| 574 |
static uint32_t sh7750_mem_readw(void *opaque, target_phys_addr_t addr) |
| 575 |
{
|
| 576 |
SH7750State *s = opaque; |
| 577 |
uint16_t r; |
| 578 |
|
| 579 |
switch (addr) {
|
| 580 |
case SH7750_RFCR_A7:
|
| 581 |
fprintf(stderr, |
| 582 |
"Read access to refresh count register, incrementing\n");
|
| 583 |
return s->rfcr++;
|
| 584 |
case SH7750_TCR0_A7:
|
| 585 |
return s->tcr0;
|
| 586 |
case SH7750_SCLSR2_A7:
|
| 587 |
/* Read and clear overflow bit */
|
| 588 |
r = s->sclsr2; |
| 589 |
s->sclsr2 = 0;
|
| 590 |
return r;
|
| 591 |
case SH7750_SCSFR2_A7:
|
| 592 |
return s->scfsr2;
|
| 593 |
case SH7750_PDTRA_A7:
|
| 594 |
return porta_lines(s);
|
| 595 |
case SH7750_PDTRB_A7:
|
| 596 |
return portb_lines(s);
|
| 597 |
default:
|
| 598 |
error_access("word read", addr);
|
| 599 |
assert(0);
|
| 600 |
} |
| 601 |
} |
| 602 |
|
| 603 |
static uint32_t sh7750_mem_readl(void *opaque, target_phys_addr_t addr) |
| 604 |
{
|
| 605 |
SH7750State *s = opaque; |
| 606 |
|
| 607 |
switch (addr) {
|
| 608 |
case SH7750_MMUCR_A7:
|
| 609 |
return s->cpu->mmucr;
|
| 610 |
case SH7750_PTEH_A7:
|
| 611 |
return s->cpu->pteh;
|
| 612 |
case SH7750_PTEL_A7:
|
| 613 |
return s->cpu->ptel;
|
| 614 |
case SH7750_TTB_A7:
|
| 615 |
return s->cpu->ttb;
|
| 616 |
case SH7750_TEA_A7:
|
| 617 |
return s->cpu->tea;
|
| 618 |
case SH7750_TRA_A7:
|
| 619 |
return s->cpu->tra;
|
| 620 |
case SH7750_EXPEVT_A7:
|
| 621 |
return s->cpu->expevt;
|
| 622 |
case SH7750_INTEVT_A7:
|
| 623 |
return s->cpu->intevt;
|
| 624 |
case SH7750_CCR_A7:
|
| 625 |
return s->ccr;
|
| 626 |
case 0x1f000030: /* Processor version PVR */ |
| 627 |
return 0x00050000; /* SH7750R */ |
| 628 |
case 0x1f000040: /* Processor version CVR */ |
| 629 |
return 0x00110000; /* Minimum caches */ |
| 630 |
case 0x1f000044: /* Processor version PRR */ |
| 631 |
return 0x00000100; /* SH7750R */ |
| 632 |
default:
|
| 633 |
error_access("long read", addr);
|
| 634 |
assert(0);
|
| 635 |
} |
| 636 |
} |
| 637 |
|
| 638 |
static void sh7750_mem_writeb(void *opaque, target_phys_addr_t addr, |
| 639 |
uint32_t mem_value) |
| 640 |
{
|
| 641 |
SH7750State *s = opaque; |
| 642 |
|
| 643 |
switch (addr) {
|
| 644 |
/* PRECHARGE ? XXXXX */
|
| 645 |
case SH7750_PRECHARGE0_A7:
|
| 646 |
case SH7750_PRECHARGE1_A7:
|
| 647 |
ignore_access("byte write", addr);
|
| 648 |
return;
|
| 649 |
case SH7750_SCBRR2_A7:
|
| 650 |
s->scbrr2 = mem_value; |
| 651 |
return;
|
| 652 |
case SH7750_TSTR_A7:
|
| 653 |
s->tstr = mem_value; |
| 654 |
timer_start_changed(s); |
| 655 |
return;
|
| 656 |
case SH7750_SCSCR1_A7:
|
| 657 |
s->scscr1 = mem_value; |
| 658 |
scscr1_changed(s); |
| 659 |
return;
|
| 660 |
case SH7750_SCSMR1_A7:
|
| 661 |
s->scsmr1 = mem_value; |
| 662 |
return;
|
| 663 |
case SH7750_SCBRR1_A7:
|
| 664 |
s->scbrr1 = mem_value; |
| 665 |
return;
|
| 666 |
case SH7750_SCTDR1_A7:
|
| 667 |
s->scssr1 &= ~SH7750_SCSSR1_TEND; |
| 668 |
s->sctdr1 = mem_value; |
| 669 |
return;
|
| 670 |
case SH7750_SCSSR1_A7:
|
| 671 |
serial1_change_scssr1(s, mem_value); |
| 672 |
return;
|
| 673 |
default:
|
| 674 |
error_access("byte write", addr);
|
| 675 |
assert(0);
|
| 676 |
} |
| 677 |
} |
| 678 |
|
| 679 |
static void sh7750_mem_writew(void *opaque, target_phys_addr_t addr, |
| 680 |
uint32_t mem_value) |
| 681 |
{
|
| 682 |
SH7750State *s = opaque; |
| 683 |
uint16_t temp; |
| 684 |
|
| 685 |
switch (addr) {
|
| 686 |
/* SDRAM controller */
|
| 687 |
case SH7750_SCBRR1_A7:
|
| 688 |
case SH7750_SCBRR2_A7:
|
| 689 |
case SH7750_BCR2_A7:
|
| 690 |
case SH7750_BCR3_A7:
|
| 691 |
case SH7750_RTCOR_A7:
|
| 692 |
case SH7750_RTCNT_A7:
|
| 693 |
case SH7750_RTCSR_A7:
|
| 694 |
ignore_access("word write", addr);
|
| 695 |
return;
|
| 696 |
/* IO ports */
|
| 697 |
case SH7750_PDTRA_A7:
|
| 698 |
temp = porta_lines(s); |
| 699 |
s->pdtra = mem_value; |
| 700 |
porta_changed(s, temp); |
| 701 |
return;
|
| 702 |
case SH7750_PDTRB_A7:
|
| 703 |
temp = portb_lines(s); |
| 704 |
s->pdtrb = mem_value; |
| 705 |
portb_changed(s, temp); |
| 706 |
return;
|
| 707 |
case SH7750_RFCR_A7:
|
| 708 |
fprintf(stderr, "Write access to refresh count register\n");
|
| 709 |
s->rfcr = mem_value; |
| 710 |
return;
|
| 711 |
case SH7750_SCLSR2_A7:
|
| 712 |
s->sclsr2 = mem_value; |
| 713 |
return;
|
| 714 |
case SH7750_SCSCR2_A7:
|
| 715 |
s->scscr2 = mem_value; |
| 716 |
scscr2_changed(s); |
| 717 |
return;
|
| 718 |
case SH7750_SCFCR2_A7:
|
| 719 |
s->scfcr2 = mem_value; |
| 720 |
return;
|
| 721 |
case SH7750_SCSMR2_A7:
|
| 722 |
s->scsmr2 = mem_value; |
| 723 |
return;
|
| 724 |
case SH7750_TCR0_A7:
|
| 725 |
s->tcr0 = mem_value; |
| 726 |
return;
|
| 727 |
case SH7750_GPIOIC_A7:
|
| 728 |
s->gpioic = mem_value; |
| 729 |
if (mem_value != 0) { |
| 730 |
fprintf(stderr, "I/O interrupts not implemented\n");
|
| 731 |
assert(0);
|
| 732 |
} |
| 733 |
return;
|
| 734 |
default:
|
| 735 |
error_access("word write", addr);
|
| 736 |
assert(0);
|
| 737 |
} |
| 738 |
} |
| 739 |
|
| 740 |
static void sh7750_mem_writel(void *opaque, target_phys_addr_t addr, |
| 741 |
uint32_t mem_value) |
| 742 |
{
|
| 743 |
SH7750State *s = opaque; |
| 744 |
uint16_t temp; |
| 745 |
|
| 746 |
switch (addr) {
|
| 747 |
/* SDRAM controller */
|
| 748 |
case SH7750_BCR1_A7:
|
| 749 |
case SH7750_BCR4_A7:
|
| 750 |
case SH7750_WCR1_A7:
|
| 751 |
case SH7750_WCR2_A7:
|
| 752 |
case SH7750_WCR3_A7:
|
| 753 |
case SH7750_MCR_A7:
|
| 754 |
ignore_access("long write", addr);
|
| 755 |
return;
|
| 756 |
/* IO ports */
|
| 757 |
case SH7750_PCTRA_A7:
|
| 758 |
temp = porta_lines(s); |
| 759 |
s->pctra = mem_value; |
| 760 |
s->portdira = portdir(mem_value); |
| 761 |
s->portpullupa = portpullup(mem_value); |
| 762 |
porta_changed(s, temp); |
| 763 |
return;
|
| 764 |
case SH7750_PCTRB_A7:
|
| 765 |
temp = portb_lines(s); |
| 766 |
s->pctrb = mem_value; |
| 767 |
s->portdirb = portdir(mem_value); |
| 768 |
s->portpullupb = portpullup(mem_value); |
| 769 |
portb_changed(s, temp); |
| 770 |
return;
|
| 771 |
case SH7750_TCNT0_A7:
|
| 772 |
s->tcnt0 = mem_value & 0xf;
|
| 773 |
return;
|
| 774 |
case SH7750_MMUCR_A7:
|
| 775 |
s->cpu->mmucr = mem_value; |
| 776 |
return;
|
| 777 |
case SH7750_PTEH_A7:
|
| 778 |
s->cpu->pteh = mem_value; |
| 779 |
return;
|
| 780 |
case SH7750_PTEL_A7:
|
| 781 |
s->cpu->ptel = mem_value; |
| 782 |
return;
|
| 783 |
case SH7750_TTB_A7:
|
| 784 |
s->cpu->ttb = mem_value; |
| 785 |
return;
|
| 786 |
case SH7750_TEA_A7:
|
| 787 |
s->cpu->tea = mem_value; |
| 788 |
return;
|
| 789 |
case SH7750_TRA_A7:
|
| 790 |
s->cpu->tra = mem_value & 0x000007ff;
|
| 791 |
return;
|
| 792 |
case SH7750_EXPEVT_A7:
|
| 793 |
s->cpu->expevt = mem_value & 0x000007ff;
|
| 794 |
return;
|
| 795 |
case SH7750_INTEVT_A7:
|
| 796 |
s->cpu->intevt = mem_value & 0x000007ff;
|
| 797 |
return;
|
| 798 |
case SH7750_CCR_A7:
|
| 799 |
s->ccr = mem_value; |
| 800 |
return;
|
| 801 |
default:
|
| 802 |
error_access("long write", addr);
|
| 803 |
assert(0);
|
| 804 |
} |
| 805 |
} |
| 806 |
|
| 807 |
static CPUReadMemoryFunc *sh7750_mem_read[] = {
|
| 808 |
sh7750_mem_readb, |
| 809 |
sh7750_mem_readw, |
| 810 |
sh7750_mem_readl |
| 811 |
}; |
| 812 |
|
| 813 |
static CPUWriteMemoryFunc *sh7750_mem_write[] = {
|
| 814 |
sh7750_mem_writeb, |
| 815 |
sh7750_mem_writew, |
| 816 |
sh7750_mem_writel |
| 817 |
}; |
| 818 |
|
| 819 |
SH7750State *sh7750_init(CPUSH4State * cpu) |
| 820 |
{
|
| 821 |
SH7750State *s; |
| 822 |
int sh7750_io_memory;
|
| 823 |
|
| 824 |
s = qemu_mallocz(sizeof(SH7750State));
|
| 825 |
s->cpu = cpu; |
| 826 |
s->periph_freq = 60000000; /* 60MHz */ |
| 827 |
sh7750_io_memory = cpu_register_io_memory(0,
|
| 828 |
sh7750_mem_read, |
| 829 |
sh7750_mem_write, s); |
| 830 |
cpu_register_physical_memory(0x1c000000, 0x04000000, sh7750_io_memory); |
| 831 |
init_timers(s); |
| 832 |
init_serial_ports(s); |
| 833 |
return s;
|
| 834 |
} |