+// SPDX-License-Identifier: MIT
+
+#include "m68k.h"
+#include "emulator.h"
+#include "platforms/platforms.h"
+#include "input/input.h"
+
+#include "platforms/amiga/Gayle.h"
+#include "platforms/amiga/amiga-registers.h"
+#include "platforms/amiga/rtg/rtg.h"
+#include "platforms/amiga/hunk-reloc.h"
+#include "platforms/amiga/piscsi/piscsi.h"
+#include "platforms/amiga/piscsi/piscsi-enums.h"
+#include "platforms/amiga/net/pi-net.h"
+#include "platforms/amiga/net/pi-net-enums.h"
+#include "platforms/amiga/pistorm-dev/pistorm-dev.h"
+#include "platforms/amiga/pistorm-dev/pistorm-dev-enums.h"
+#include "gpio/ps_protocol.h"
+
#include <assert.h>
#include <dirent.h>
#include <endian.h>
#include <fcntl.h>
+#include <poll.h>
#include <pthread.h>
#include <sched.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
-#include <sys/ioctl.h>
-#include "Gayle.h"
-#include "ide.h"
-#include "m68k.h"
-#include "main.h"
-#include "platforms/platforms.h"
-#include "input/input.h"
-#include "platforms/amiga/amiga-registers.h"
+#define KEY_POLL_INTERVAL_MSEC 5000
-//#define BCM2708_PERI_BASE 0x20000000 //pi0-1
-//#define BCM2708_PERI_BASE 0xFE000000 //pi4
-#define BCM2708_PERI_BASE 0x3F000000 // pi3
-#define BCM2708_PERI_SIZE 0x01000000
-#define GPIO_BASE (BCM2708_PERI_BASE + 0x200000) /* GPIO controller */
-#define GPCLK_BASE (BCM2708_PERI_BASE + 0x101000)
-#define GPIO_ADDR 0x200000 /* GPIO controller */
-#define GPCLK_ADDR 0x101000
-#define CLK_PASSWD 0x5a000000
-#define CLK_GP0_CTL 0x070
-#define CLK_GP0_DIV 0x074
-
-#define SA0 5
-#define SA1 3
-#define SA2 2
-
-#define STATUSREGADDR \
- GPIO_CLR = 1 << SA0; \
- GPIO_CLR = 1 << SA1; \
- GPIO_SET = 1 << SA2;
-#define W16 \
- GPIO_CLR = 1 << SA0; \
- GPIO_CLR = 1 << SA1; \
- GPIO_CLR = 1 << SA2;
-#define R16 \
- GPIO_SET = 1 << SA0; \
- GPIO_CLR = 1 << SA1; \
- GPIO_CLR = 1 << SA2;
-#define W8 \
- GPIO_CLR = 1 << SA0; \
- GPIO_SET = 1 << SA1; \
- GPIO_CLR = 1 << SA2;
-#define R8 \
- GPIO_SET = 1 << SA0; \
- GPIO_SET = 1 << SA1; \
- GPIO_CLR = 1 << SA2;
-
-#define PAGE_SIZE (4 * 1024)
-#define BLOCK_SIZE (4 * 1024)
-
-#define GPIOSET(no, ishigh) \
- do { \
- if (ishigh) \
- set |= (1 << (no)); \
- else \
- reset |= (1 << (no)); \
- } while (0)
-
-#define FASTBASE 0x07FFFFFF
-#define FASTSIZE 0xFFFFFFF
-#define GAYLEBASE 0xD80000 // D7FFFF
-#define GAYLESIZE 0x6FFFF
-
-#define JOY0DAT 0xDFF00A
-#define JOY1DAT 0xDFF00C
-#define CIAAPRA 0xBFE001
-#define POTGOR 0xDFF016
+unsigned char read_ranges;
+unsigned int read_addr[8];
+unsigned int read_upper[8];
+unsigned char *read_data[8];
+unsigned char write_ranges;
+unsigned int write_addr[8];
+unsigned int write_upper[8];
+unsigned char *write_data[8];
int kb_hook_enabled = 0;
int mouse_hook_enabled = 0;
int cpu_emulation_running = 1;
-char mouse_dx = 0, mouse_dy = 0;
-char mouse_buttons = 0;
+uint8_t mouse_dx = 0, mouse_dy = 0;
+uint8_t mouse_buttons = 0;
+uint8_t mouse_extra = 0;
+
+extern uint8_t gayle_int;
+extern uint8_t gayle_ide_enabled;
+extern uint8_t gayle_emulation_enabled;
+extern uint8_t gayle_a4k_int;
+extern volatile unsigned int *gpio;
+extern volatile uint16_t srdata;
+extern uint8_t realtime_graphics_debug, emulator_exiting;
+extern uint8_t rtg_on;
+uint8_t realtime_disassembly, int2_enabled = 0;
+uint32_t do_disasm = 0, old_level;
+uint32_t last_irq = 8, last_last_irq = 8;
+
+uint8_t end_signal = 0, load_new_config = 0;
+
+char disasm_buf[4096];
#define KICKBASE 0xF80000
#define KICKSIZE 0x7FFFF
int mem_fd, mouse_fd = -1, keyboard_fd = -1;
int mem_fd_gpclk;
-int gayle_emulation_enabled = 1;
-void *gpio_map;
-void *gpclk_map;
+int irq;
+int gayleirq;
+
+#define MUSASHI_HAX
+
+#ifdef MUSASHI_HAX
+#include "m68kcpu.h"
+extern m68ki_cpu_core m68ki_cpu;
+extern int m68ki_initial_cycles;
+extern int m68ki_remaining_cycles;
+
+#define M68K_SET_IRQ(i) old_level = CPU_INT_LEVEL; \
+ CPU_INT_LEVEL = (i << 8); \
+ if(old_level != 0x0700 && CPU_INT_LEVEL == 0x0700) \
+ m68ki_cpu.nmi_pending = TRUE;
+#define M68K_END_TIMESLICE m68ki_initial_cycles = GET_CYCLES(); \
+ SET_CYCLES(0);
+#else
+#define M68K_SET_IRQ m68k_set_irq
+#define M68K_END_TIMESLICE m68k_end_timeslice()
+#endif
+
+#define NOP asm("nop"); asm("nop"); asm("nop"); asm("nop");
+
+#define DEBUG_EMULATOR
+#ifdef DEBUG_EMULATOR
+#define DEBUG printf
+#else
+#define DEBUG(...)
+#endif
// Configurable emulator options
unsigned int cpu_type = M68K_CPU_TYPE_68000;
-unsigned int loop_cycles = 300;
+unsigned int loop_cycles = 300, irq_status = 0;
struct emulator_config *cfg = NULL;
-char keyboard_file[256] = "/dev/input/event0";
-
-// I/O access
-volatile unsigned int *gpio;
-volatile unsigned int *gpclk;
-volatile unsigned int gpfsel0;
-volatile unsigned int gpfsel1;
-volatile unsigned int gpfsel2;
-volatile unsigned int gpfsel0_o;
-volatile unsigned int gpfsel1_o;
-volatile unsigned int gpfsel2_o;
-
-// GPIO setup macros. Always use INP_GPIO(x) before using OUT_GPIO(x) or
-// SET_GPIO_ALT(x,y)
-#define INP_GPIO(g) *(gpio + ((g) / 10)) &= ~(7 << (((g) % 10) * 3))
-#define OUT_GPIO(g) *(gpio + ((g) / 10)) |= (1 << (((g) % 10) * 3))
-#define SET_GPIO_ALT(g, a) \
- *(gpio + (((g) / 10))) |= \
- (((a) <= 3 ? (a) + 4 : (a) == 4 ? 3 : 2) << (((g) % 10) * 3))
-
-#define GPIO_SET \
- *(gpio + 7) // sets bits which are 1 ignores bits which are 0
-#define GPIO_CLR \
- *(gpio + 10) // clears bits which are 1 ignores bits which are 0
-
-#define GET_GPIO(g) (*(gpio + 13) & (1 << g)) // 0 if LOW, (1<<g) if HIGH
-
-#define GPIO_PULL *(gpio + 37) // Pull up/pull down
-#define GPIO_PULLCLK0 *(gpio + 38) // Pull up/pull down clock
-
-void setup_io();
-
-uint32_t read8(uint32_t address);
-void write8(uint32_t address, uint32_t data);
-
-uint32_t read16(uint32_t address);
-void write16(uint32_t address, uint32_t data);
-
-void write32(uint32_t address, uint32_t data);
-uint32_t read32(uint32_t address);
-
-uint16_t read_reg(void);
-void write_reg(unsigned int value);
-
-volatile uint16_t srdata;
-volatile uint32_t srdata2;
-volatile uint32_t srdata2_old;
-
-//unsigned char g_kick[524288];
-//unsigned char g_ram[FASTSIZE + 1]; /* RAM */
-unsigned char toggle;
-static volatile unsigned char ovl;
+char keyboard_file[256] = "/dev/input/event1";
+
+uint64_t trig_irq = 0, serv_irq = 0;
+uint16_t irq_delay = 0;
+unsigned int amiga_reset=0, amiga_reset_last=0;
+unsigned int do_reset=0;
+
+void *ipl_task(void *args) {
+ printf("IPL thread running\n");
+ uint16_t old_irq = 0;
+ uint32_t value;
+
+ while (1) {
+ value = *(gpio + 13);
+
+ if (!(value & (1 << PIN_IPL_ZERO))) {
+ irq = 1;
+ old_irq = irq_delay;
+ //NOP
+ M68K_END_TIMESLICE;
+ NOP
+ //usleep(0);
+ }
+ else {
+ if (irq) {
+ if (old_irq) {
+ old_irq--;
+ }
+ else {
+ irq = 0;
+ }
+ M68K_END_TIMESLICE;
+ NOP
+ //usleep(0);
+ }
+ }
+ if(do_reset==0)
+ {
+ amiga_reset=(value & (1 << PIN_RESET));
+ if(amiga_reset!=amiga_reset_last)
+ {
+ amiga_reset_last=amiga_reset;
+ if(amiga_reset==0)
+ {
+ printf("Amiga Reset is down...\n");
+ do_reset=1;
+ M68K_END_TIMESLICE;
+ }
+ else
+ {
+ printf("Amiga Reset is up...\n");
+ }
+ }
+ }
+
+ /*if (gayle_ide_enabled) {
+ if (((gayle_int & 0x80) || gayle_a4k_int) && (get_ide(0)->drive[0].intrq || get_ide(0)->drive[1].intrq)) {
+ //get_ide(0)->drive[0].intrq = 0;
+ gayleirq = 1;
+ M68K_END_TIMESLICE;
+ }
+ else
+ gayleirq = 0;
+ }*/
+ //usleep(0);
+ //NOP NOP
+ NOP NOP NOP NOP NOP NOP NOP NOP
+ //NOP NOP NOP NOP NOP NOP NOP NOP
+ //NOP NOP NOP NOP NOP NOP NOP NOP
+ /*NOP NOP NOP NOP NOP NOP NOP NOP
+ NOP NOP NOP NOP NOP NOP NOP NOP
+ NOP NOP NOP NOP NOP NOP NOP NOP*/
+ }
+ return args;
+}
+
+void *cpu_task() {
+ m68k_pulse_reset();
+
+cpu_loop:
+ if (mouse_hook_enabled) {
+ get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons, &mouse_extra);
+ }
+
+ if (realtime_disassembly && (do_disasm || cpu_emulation_running)) {
+ m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
+ printf("REGA: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), m68k_get_reg(NULL, M68K_REG_A2), m68k_get_reg(NULL, M68K_REG_A3), \
+ m68k_get_reg(NULL, M68K_REG_A4), m68k_get_reg(NULL, M68K_REG_A5), m68k_get_reg(NULL, M68K_REG_A6), m68k_get_reg(NULL, M68K_REG_A7));
+ printf("REGD: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2), m68k_get_reg(NULL, M68K_REG_D3), \
+ m68k_get_reg(NULL, M68K_REG_D4), m68k_get_reg(NULL, M68K_REG_D5), m68k_get_reg(NULL, M68K_REG_D6), m68k_get_reg(NULL, M68K_REG_D7));
+ printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
+ if (do_disasm)
+ do_disasm--;
+ m68k_execute(1);
+ }
+ else {
+ if (cpu_emulation_running)
+ m68k_execute(loop_cycles);
+ }
+
+ if (irq) {
+ while (irq) {
+ last_irq = ((read_reg() & 0xe000) >> 13);
+ if (last_irq != last_last_irq) {
+ last_last_irq = last_irq;
+ M68K_SET_IRQ(last_irq);
+ }
+ m68k_execute(5);
+ }
+ if (gayleirq && int2_enabled) {
+ write16(0xdff09c, 0x8000 | (1 << 3) && last_irq != 2);
+ last_last_irq = last_irq;
+ last_irq = 2;
+ M68K_SET_IRQ(2);
+ }
+ M68K_SET_IRQ(0);
+ last_last_irq = 0;
+ m68k_execute(5);
+ }
+ /*else {
+ if (last_irq != 0) {
+ M68K_SET_IRQ(0);
+ last_last_irq = last_irq;
+ last_irq = 0;
+ }
+ }*/
+ if (do_reset) {
+ cpu_pulse_reset();
+ do_reset=0;
+ usleep(1000000); // 1sec
+ rtg_on=0;
+// while(amiga_reset==0);
+// printf("CPU emulation reset.\n");
+ }
+
+ if (mouse_hook_enabled && (mouse_extra != 0x00)) {
+ // mouse wheel events have occurred; unlike l/m/r buttons, these are queued as keypresses, so add to end of buffer
+ switch (mouse_extra) {
+ case 0xff:
+ // wheel up
+ queue_keypress(0xfe, KEYPRESS_PRESS, PLATFORM_AMIGA);
+ break;
+ case 0x01:
+ // wheel down
+ queue_keypress(0xff, KEYPRESS_PRESS, PLATFORM_AMIGA);
+ break;
+ }
+
+ // dampen the scroll wheel until next while loop iteration
+ mouse_extra = 0x00;
+ }
+
+ if (load_new_config) {
+ printf("[CPU] Loading new config file.\n");
+ goto stop_cpu_emulation;
+ }
+
+ if (end_signal)
+ goto stop_cpu_emulation;
+
+ goto cpu_loop;
+
+stop_cpu_emulation:
+ printf("[CPU] End of CPU thread\n");
+ return (void *)NULL;
+}
+
+void *keyboard_task() {
+ struct pollfd kbdpoll[1];
+ int kpollrc;
+ char c = 0, c_code = 0, c_type = 0;
+ char grab_message[] = "[KBD] Grabbing keyboard from input layer\n",
+ ungrab_message[] = "[KBD] Ungrabbing keyboard\n";
+
+ printf("[KBD] Keyboard thread started\n");
+
+ // because we permit the keyboard to be grabbed on startup, quickly check if we need to grab it
+ if (kb_hook_enabled && cfg->keyboard_grab) {
+ printf(grab_message);
+ grab_device(keyboard_fd);
+ }
+
+ kbdpoll[0].fd = keyboard_fd;
+ kbdpoll[0].events = POLLIN;
+
+key_loop:
+ kpollrc = poll(kbdpoll, 1, KEY_POLL_INTERVAL_MSEC);
+ if ((kpollrc > 0) && (kbdpoll[0].revents & POLLHUP)) {
+ // in the event that a keyboard is unplugged, keyboard_task will whiz up to 100% utilisation
+ // this is undesired, so if the keyboard HUPs, end the thread without ending the emulation
+ printf("[KBD] Keyboard node returned HUP (unplugged?)\n");
+ goto key_end;
+ }
+
+ // if kpollrc > 0 then it contains number of events to pull, also check if POLLIN is set in revents
+ if ((kpollrc <= 0) || !(kbdpoll[0].revents & POLLIN)) {
+ goto key_loop;
+ }
+
+ while (get_key_char(&c, &c_code, &c_type)) {
+ if (c && c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
+ kb_hook_enabled = 1;
+ printf("[KBD] Keyboard hook enabled.\n");
+ if (cfg->keyboard_grab) {
+ grab_device(keyboard_fd);
+ printf(grab_message);
+ }
+ } else if (kb_hook_enabled) {
+ if (c == 0x1B && c_type) {
+ kb_hook_enabled = 0;
+ printf("[KBD] Keyboard hook disabled.\n");
+ if (cfg->keyboard_grab) {
+ release_device(keyboard_fd);
+ printf(ungrab_message);
+ }
+ } else {
+ if (queue_keypress(c_code, c_type, cfg->platform->id) && int2_enabled && last_irq != 2) {
+ //last_irq = 0;
+ //M68K_SET_IRQ(2);
+ }
+ }
+ }
+
+ // pause pressed; trigger nmi (int level 7)
+ if (c == 0x01 && c_type) {
+ printf("[INT] Sending NMI\n");
+ M68K_SET_IRQ(7);
+ }
+
+ if (!kb_hook_enabled && c_type) {
+ if (c && c == cfg->mouse_toggle_key) {
+ mouse_hook_enabled ^= 1;
+ printf("Mouse hook %s.\n", mouse_hook_enabled ? "enabled" : "disabled");
+ mouse_dx = mouse_dy = mouse_buttons = mouse_extra = 0;
+ }
+ if (c == 'r') {
+ cpu_emulation_running ^= 1;
+ printf("CPU emulation is now %s\n", cpu_emulation_running ? "running" : "stopped");
+ }
+ if (c == 'g') {
+ realtime_graphics_debug ^= 1;
+ printf("Real time graphics debug is now %s\n", realtime_graphics_debug ? "on" : "off");
+ }
+ if (c == 'R') {
+ cpu_pulse_reset();
+ //m68k_pulse_reset();
+ printf("CPU emulation reset.\n");
+ }
+ if (c == 'q') {
+ printf("Quitting and exiting emulator.\n");
+ end_signal = 1;
+ goto key_end;
+ }
+ if (c == 'd') {
+ realtime_disassembly ^= 1;
+ do_disasm = 1;
+ printf("Real time disassembly is now %s\n", realtime_disassembly ? "on" : "off");
+ }
+ if (c == 'D') {
+ int r = get_mapped_item_by_address(cfg, 0x08000000);
+ if (r != -1) {
+ printf("Dumping first 16MB of mapped range %d.\n", r);
+ FILE *dmp = fopen("./memdmp.bin", "wb+");
+ fwrite(cfg->map_data[r], 16 * SIZE_MEGA, 1, dmp);
+ fclose(dmp);
+ }
+ }
+ if (c == 's' && realtime_disassembly) {
+ do_disasm = 1;
+ }
+ if (c == 'S' && realtime_disassembly) {
+ do_disasm = 128;
+ }
+ }
+ }
+
+ goto key_loop;
+
+key_end:
+ printf("[KBD] Keyboard thread ending\n");
+ if (cfg->keyboard_grab) {
+ printf(ungrab_message);
+ release_device(keyboard_fd);
+ }
+ return (void*)NULL;
+}
+
+void stop_cpu_emulation(uint8_t disasm_cur) {
+ M68K_END_TIMESLICE;
+ if (disasm_cur) {
+ m68k_disassemble(disasm_buf, m68k_get_reg(NULL, M68K_REG_PC), cpu_type);
+ printf("REGA: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), m68k_get_reg(NULL, M68K_REG_A2), m68k_get_reg(NULL, M68K_REG_A3), \
+ m68k_get_reg(NULL, M68K_REG_A4), m68k_get_reg(NULL, M68K_REG_A5), m68k_get_reg(NULL, M68K_REG_A6), m68k_get_reg(NULL, M68K_REG_A7));
+ printf("REGD: 0:$%.8X 1:$%.8X 2:$%.8X 3:$%.8X 4:$%.8X 5:$%.8X 6:$%.8X 7:$%.8X\n", m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2), m68k_get_reg(NULL, M68K_REG_D3), \
+ m68k_get_reg(NULL, M68K_REG_D4), m68k_get_reg(NULL, M68K_REG_D5), m68k_get_reg(NULL, M68K_REG_D6), m68k_get_reg(NULL, M68K_REG_D7));
+ printf("%.8X (%.8X)]] %s\n", m68k_get_reg(NULL, M68K_REG_PC), (m68k_get_reg(NULL, M68K_REG_PC) & 0xFFFFFF), disasm_buf);
+ realtime_disassembly = 1;
+ }
+
+ cpu_emulation_running = 0;
+ do_disasm = 0;
+}
+
+unsigned int ovl;
static volatile unsigned char maprom;
void sigint_handler(int sig_num) {
if (mem_fd)
close(mem_fd);
- exit(0);
-}
-
-void *iplThread(void *args) {
- printf("IPL thread running/n");
-
- while (42) {
+ if (cfg->platform->shutdown) {
+ cfg->platform->shutdown(cfg);
+ }
- if (GET_GPIO(1) == 0) {
- toggle = 1;
- m68k_end_timeslice();
- //printf("thread!/n");
- } else {
- toggle = 0;
- };
- usleep(1);
+ while (!emulator_exiting) {
+ emulator_exiting = 1;
+ usleep(0);
}
+ printf("IRQs triggered: %lld\n", trig_irq);
+ printf("IRQs serviced: %lld\n", serv_irq);
+
+ exit(0);
}
int main(int argc, char *argv[]) {
int g;
- const struct sched_param priority = {99};
+
+ ps_setup_protocol();
+
+ //const struct sched_param priority = {99};
// Some command line switch stuffles
for (g = 1; g < argc; g++) {
- if (strcmp(argv[g], "--disable-gayle") == 0) {
- gayle_emulation_enabled = 0;
- }
- else if (strcmp(argv[g], "--cpu_type") == 0 || strcmp(argv[g], "--cpu") == 0) {
+ if (strcmp(argv[g], "--cpu_type") == 0 || strcmp(argv[g], "--cpu") == 0) {
if (g + 1 >= argc) {
printf("%s switch found, but no CPU type specified.\n", argv[g]);
} else {
printf("%s switch found, but no config filename specified.\n", argv[g]);
} else {
g++;
- cfg = load_config_file(argv[g]);
+ FILE *chk = fopen(argv[g], "rb");
+ if (chk == NULL) {
+ printf("Config file %s does not exist, please check that you've specified the path correctly.\n", argv[g]);
+ } else {
+ fclose(chk);
+ load_new_config = 1;
+ set_pistorm_devcfg_filename(argv[g]);
+ }
}
}
else if (strcmp(argv[g], "--keyboard-file") == 0 || strcmp(argv[g], "--kbfile") == 0) {
}
}
+switch_config:
+ srand(clock());
+
+ ps_reset_state_machine();
+ ps_pulse_reset();
+ usleep(1500);
+
+ if (load_new_config != 0) {
+ uint8_t config_action = load_new_config - 1;
+ load_new_config = 0;
+ if (cfg) {
+ free_config_file(cfg);
+ free(cfg);
+ cfg = NULL;
+ }
+
+ switch(config_action) {
+ case PICFG_LOAD:
+ case PICFG_RELOAD:
+ cfg = load_config_file(get_pistorm_devcfg_filename());
+ break;
+ case PICFG_DEFAULT:
+ cfg = load_config_file("default.cfg");
+ break;
+ }
+ }
+
if (!cfg) {
printf("No config file specified. Trying to load default.cfg...\n");
cfg = load_config_file("default.cfg");
}
if (cfg->mouse_enabled) {
- mouse_fd = open(cfg->mouse_file, O_RDONLY | O_NONBLOCK);
+ mouse_fd = open(cfg->mouse_file, O_RDWR | O_NONBLOCK);
if (mouse_fd == -1) {
printf("Failed to open %s, can't enable mouse hook.\n", cfg->mouse_file);
cfg->mouse_enabled = 0;
+ } else {
+ /**
+ * *-*-*-* magic numbers! *-*-*-*
+ * great, so waaaay back in the history of the pc, the ps/2 protocol set the standard for mice
+ * and in the process, the mouse sample rate was defined as a way of putting mice into vendor-specific modes.
+ * as the ancient gpm command explains, almost everything except incredibly old mice talk the IntelliMouse
+ * protocol, which reports four bytes. by default, every mouse starts in 3-byte mode (don't report wheel or
+ * additional buttons) until imps2 magic is sent. so, command $f3 is "set sample rate", followed by a byte.
+ */
+ uint8_t mouse_init[] = { 0xf4, 0xf3, 0x64 }; // enable, then set sample rate 100
+ uint8_t imps2_init[] = { 0xf3, 0xc8, 0xf3, 0x64, 0xf3, 0x50 }; // magic sequence; set sample 200, 100, 80
+ if (write(mouse_fd, mouse_init, sizeof(mouse_init)) != -1) {
+ if (write(mouse_fd, imps2_init, sizeof(imps2_init)) == -1)
+ printf("[MOUSE] Couldn't enable scroll wheel events; is this mouse from the 1980s?\n");
+ } else
+ printf("[MOUSE] Mouse didn't respond to normal PS/2 init; have you plugged a brick in by mistake?\n");
}
}
- keyboard_fd = open(keyboard_file, O_RDONLY | O_NONBLOCK);
+ if (cfg->keyboard_file)
+ keyboard_fd = open(cfg->keyboard_file, O_RDONLY | O_NONBLOCK);
+ else
+ keyboard_fd = open(keyboard_file, O_RDONLY | O_NONBLOCK);
+
if (keyboard_fd == -1) {
printf("Failed to open keyboard event source.\n");
}
- sched_setscheduler(0, SCHED_FIFO, &priority);
- mlockall(MCL_CURRENT); // lock in memory to keep us from paging out
+ if (cfg->mouse_autoconnect)
+ mouse_hook_enabled = 1;
+
+ if (cfg->keyboard_autoconnect)
+ kb_hook_enabled = 1;
InitGayle();
signal(SIGINT, sigint_handler);
- setup_io();
-
- //goto skip_everything;
-
- // Enable 200MHz CLK output on GPIO4, adjust divider and pll source depending
- // on pi model
- printf("Enable 200MHz GPCLK0 on GPIO4\n");
-
- *(gpclk + (CLK_GP0_CTL / 4)) = CLK_PASSWD | (1 << 5);
- usleep(10);
- while ((*(gpclk + (CLK_GP0_CTL / 4))) & (1 << 7))
- ;
- usleep(100);
- *(gpclk + (CLK_GP0_DIV / 4)) =
- CLK_PASSWD | (6 << 12); // divider , 6=200MHz on pi3
- usleep(10);
- *(gpclk + (CLK_GP0_CTL / 4)) =
- CLK_PASSWD | 5 | (1 << 4); // pll? 6=plld, 5=pllc
- usleep(10);
- while (((*(gpclk + (CLK_GP0_CTL / 4))) & (1 << 7)) == 0)
- ;
- usleep(100);
-
- SET_GPIO_ALT(4, 0); // gpclk0
-
- // set SA to output
- INP_GPIO(2);
- OUT_GPIO(2);
- INP_GPIO(3);
- OUT_GPIO(3);
- INP_GPIO(5);
- OUT_GPIO(5);
-
- // set gpio0 (aux0) and gpio1 (aux1) to input
- INP_GPIO(0);
- INP_GPIO(1);
-
- // Set GPIO pins 6,7 and 8-23 to output
- for (g = 6; g <= 23; g++) {
- INP_GPIO(g);
- OUT_GPIO(g);
- }
- printf("Precalculate GPIO8-23 as Output\n");
- gpfsel0_o = *(gpio); // store gpio ddr
- printf("gpfsel0: %#x\n", gpfsel0_o);
- gpfsel1_o = *(gpio + 1); // store gpio ddr
- printf("gpfsel1: %#x\n", gpfsel1_o);
- gpfsel2_o = *(gpio + 2); // store gpio ddr
- printf("gpfsel2: %#x\n", gpfsel2_o);
-
- // Set GPIO pins 8-23 to input
- for (g = 8; g <= 23; g++) {
- INP_GPIO(g);
- }
- printf("Precalculate GPIO8-23 as Input\n");
- gpfsel0 = *(gpio); // store gpio ddr
- printf("gpfsel0: %#x\n", gpfsel0);
- gpfsel1 = *(gpio + 1); // store gpio ddr
- printf("gpfsel1: %#x\n", gpfsel1);
- gpfsel2 = *(gpio + 2); // store gpio ddr
- printf("gpfsel2: %#x\n", gpfsel2);
-
- GPIO_CLR = 1 << 2;
- GPIO_CLR = 1 << 3;
- GPIO_SET = 1 << 5;
-
- GPIO_SET = 1 << 6;
- GPIO_SET = 1 << 7;
-
- // reset cpld statemachine first
-
- write_reg(0x01);
- usleep(100);
- usleep(1500);
- write_reg(0x00);
- usleep(100);
-
- // reset amiga and statemachine
- skip_everything:;
- cpu_pulse_reset();
- ovl = 1;
- m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
- m68k_write_memory_8(0xbfe001, 0x0001); // AMIGA OVL high (ROM@0x0)
+ ps_reset_state_machine();
+ ps_pulse_reset();
usleep(1500);
m68k_init();
printf("Setting CPU type to %d.\n", cpu_type);
m68k_set_cpu_type(cpu_type);
- m68k_pulse_reset();
-
- if (maprom == 1) {
- m68k_set_reg(M68K_REG_PC, 0xF80002);
- } else {
- m68k_set_reg(M68K_REG_PC, 0x0);
- }
-
-/*
- pthread_t id;
- int err;
- err = pthread_create(&id, NULL, &iplThread, NULL);
- if (err != 0)
- printf("\ncan't create IPL thread :[%s]", strerror(err));
- else
- printf("\n IPL Thread created successfully\n");
-*/
- char c = 0;
+ cpu_pulse_reset();
- m68k_pulse_reset();
- while (42) {
- if (mouse_hook_enabled) {
- if (get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons)) {
- //printf("Maus: %d (%.2X), %d (%.2X), B:%.2X\n", mouse_dx, mouse_dx, mouse_dy, mouse_dy, mouse_buttons);
- }
+ pthread_t ipl_tid = 0, cpu_tid, kbd_tid;
+ int err;
+ if (ipl_tid == 0) {
+ err = pthread_create(&ipl_tid, NULL, &ipl_task, NULL);
+ if (err != 0)
+ printf("[ERROR] Cannot create IPL thread: [%s]", strerror(err));
+ else {
+ pthread_setname_np(ipl_tid, "pistorm: ipl");
+ printf("IPL thread created successfully\n");
}
+ }
- if (cpu_emulation_running)
- m68k_execute(loop_cycles);
-
- // FIXME: Rework this to use keyboard events instead.
- while (get_key_char(&c)) {
- if (c == cfg->keyboard_toggle_key && !kb_hook_enabled) {
- kb_hook_enabled = 1;
- printf("Keyboard hook enabled.\n");
- }
- else if (c == 0x1B && kb_hook_enabled) {
- kb_hook_enabled = 0;
- printf("Keyboard hook disabled.\n");
- }
- if (!kb_hook_enabled) {
- if (c == cfg->mouse_toggle_key) {
- mouse_hook_enabled ^= 1;
- printf("Mouse hook %s.\n", mouse_hook_enabled ? "enabled" : "disabled");
- mouse_dx = mouse_dy = mouse_buttons = 0;
- }
- if (c == 'r') {
- cpu_emulation_running ^= 1;
- printf("CPU emulation is now %s\n", cpu_emulation_running ? "running" : "stopped");
- }
- if (c == 'R') {
- cpu_pulse_reset();
- m68k_pulse_reset();
- printf("CPU emulation reset.\n");
- }
- if (c == 'q') {
- printf("Quitting and exiting emulator.\n");
- goto stop_cpu_emulation;
- }
- }
- }
-/*
- if (toggle == 1){
- srdata = read_reg();
- m68k_set_irq((srdata >> 13) & 0xff);
- } else {
- m68k_set_irq(0);
- };
- usleep(1);
-*/
+ // create keyboard task
+ err = pthread_create(&kbd_tid, NULL, &keyboard_task, NULL);
+ if (err != 0)
+ printf("[ERROR] Cannot create keyboard thread: [%s]", strerror(err));
+ else {
+ pthread_setname_np(kbd_tid, "pistorm: kbd");
+ printf("[MAIN] Keyboard thread created successfully\n");
+ }
+ // create cpu task
+ err = pthread_create(&cpu_tid, NULL, &cpu_task, NULL);
+ if (err != 0)
+ printf("[ERROR] Cannot create CPU thread: [%s]", strerror(err));
+ else {
+ pthread_setname_np(cpu_tid, "pistorm: cpu");
+ printf("[MAIN] CPU thread created successfully\n");
+ }
- if (GET_GPIO(1) == 0) {
- srdata = read_reg();
- m68k_set_irq((srdata >> 13) & 0xff);
- } else {
- if (CheckIrq() == 1) {
- write16(0xdff09c, 0x8008);
- m68k_set_irq(2);
- }
- else
- m68k_set_irq(0);
- };
+ // wait for cpu task to end before closing up and finishing
+ pthread_join(cpu_tid, NULL);
+ while (!emulator_exiting) {
+ emulator_exiting = 1;
+ usleep(0);
}
- stop_cpu_emulation:;
+ if (load_new_config == 0)
+ printf("[MAIN] All threads appear to have concluded; ending process\n");
if (mouse_fd != -1)
close(mouse_fd);
if (mem_fd)
close(mem_fd);
+ if (load_new_config != 0)
+ goto switch_config;
+
+ if (cfg->platform->shutdown) {
+ cfg->platform->shutdown(cfg);
+ }
+
return 0;
}
void cpu_pulse_reset(void) {
- write_reg(0x00);
- // printf("Status Reg%x\n",read_reg());
- usleep(100000);
- write_reg(0x02);
- // printf("Status Reg%x\n",read_reg());
+ ps_pulse_reset();
+ if (cfg->platform->handle_reset)
+ cfg->platform->handle_reset(cfg);
+
+ //m68k_write_memory_16(INTENA, 0x7FFF);
+ ovl = 1;
+ //m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
+ //m68k_write_memory_8(0xbfe001, 0x0001); // AMIGA OVL high (ROM@0x0)
+
+ m68k_pulse_reset();
}
int cpu_irq_ack(int level) {
}
static unsigned int target = 0;
+static uint8_t send_keypress = 0;
+static uint32_t platform_res, rres;
+
+uint8_t cdtv_dmac_reg_idx_read();
+void cdtv_dmac_reg_idx_write(uint8_t value);
+uint32_t cdtv_dmac_read(uint32_t address, uint8_t type);
+void cdtv_dmac_write(uint32_t address, uint32_t value, uint8_t type);
+
+static inline uint32_t ps_read(uint8_t type, uint32_t addr) {
+ switch (type) {
+ case OP_TYPE_BYTE:
+ return ps_read_8(addr);
+ case OP_TYPE_WORD:
+ return ps_read_16(addr);
+ case OP_TYPE_LONGWORD:
+ return ps_read_32(addr);
+ }
+ // This shouldn't actually happen.
+ return 0;
+}
+
+static inline int32_t platform_read_check(uint8_t type, uint32_t addr, uint32_t *res) {
+ switch (addr) {
+ case CIAAPRA:
+ if (mouse_hook_enabled && (mouse_buttons & 0x01)) {
+ rres = (uint32_t)ps_read(type, addr);
+ *res = (rres ^ 0x40);
+ return 1;
+ }
+ return 0;
+ break;
+ case CIAAICR:
+ if (kb_hook_enabled) {
+ rres = (uint32_t)ps_read(type, addr);
+ if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) {
+ rres |= 0x08;
+ if (!send_keypress)
+ send_keypress = 1;
+ }
+ if (send_keypress == 2) {
+ send_keypress = 0;
+ }
+ *res = rres;
+ return 1;
+ }
+ return 0;
+ break;
+ case CIAADAT:
+ if (kb_hook_enabled) {
+ rres = (uint32_t)ps_read(type, addr);
+ uint8_t c = 0, t = 0;
+ pop_queued_key(&c, &t);
+ t ^= 0x01;
+ rres = ((c << 1) | t) ^ 0xFF;
+ send_keypress = 2;
+ *res = rres;
+ return 1;
+ }
+ return 0;
+ break;
+ case JOY0DAT:
+ if (mouse_hook_enabled) {
+ unsigned short result = (mouse_dy << 8) | (mouse_dx);
+ *res = (unsigned int)result;
+ return 1;
+ }
+ return 0;
+ break;
+ case POTGOR:
+ if (mouse_hook_enabled) {
+ unsigned short result = (unsigned short)ps_read(type, addr);
+ // bit 1 rmb, bit 2 mmb
+ if (mouse_buttons & 0x06) {
+ *res = (unsigned int)((result ^ ((mouse_buttons & 0x02) << 9)) // move rmb to bit 10
+ & (result ^ ((mouse_buttons & 0x04) << 6))); // move mmb to bit 8
+ return 1;
+ }
+ *res = (unsigned int)(result & 0xfffd);
+ return 1;
+ }
+ return 0;
+ break;
+ default:
+ break;
+ }
+
+ switch (cfg->platform->id) {
+ case PLATFORM_AMIGA:
+ if (addr >= cfg->custom_low && addr < cfg->custom_high) {
+ if (addr >= PISCSI_OFFSET && addr < PISCSI_UPPER) {
+ *res = handle_piscsi_read(addr, type);
+ return 1;
+ }
+ if (addr >= PINET_OFFSET && addr < PINET_UPPER) {
+ *res = handle_pinet_read(addr, type);
+ return 1;
+ }
+ if (addr >= PIGFX_RTG_BASE && addr < PIGFX_UPPER) {
+ *res = rtg_read((addr & 0x0FFFFFFF), type);
+ return 1;
+ }
+ if (custom_read_amiga(cfg, addr, &target, type) != -1) {
+ *res = target;
+ return 1;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ if (ovl || (addr >= cfg->mapped_low && addr < cfg->mapped_high)) {
+ if (handle_mapped_read(cfg, addr, &target, type) != -1) {
+ *res = target;
+ return 1;
+ }
+ }
-#define PLATFORM_CHECK_READ(a) \
- if (address >= cfg->custom_low && address < cfg->custom_high) { \
- unsigned int target = 0; \
- switch(cfg->platform->id) { \
- case PLATFORM_AMIGA: { \
- if (custom_read_amiga(cfg, address, &target, a) != -1) { \
- return target; \
- } \
- break; \
- } \
- default: \
- break; \
- } \
- } \
- if (ovl || (address >= cfg->map_low && address < cfg->map_high)) { \
- if (handle_mapped_read(cfg, address, &target, a, ovl) != -1) \
- return target; \
- } \
+ return 0;
+}
unsigned int m68k_read_memory_8(unsigned int address) {
- PLATFORM_CHECK_READ(OP_TYPE_BYTE);
+ if (platform_read_check(OP_TYPE_BYTE, address, &platform_res)) {
+ return platform_res;
+ }
- address &=0xFFFFFF;
-// if (address < 0xffffff) {
- return read8((uint32_t)address);
-// }
+ if (address & 0xFF000000)
+ return 0;
-// return 1;
+ return (unsigned int)read8((uint32_t)address);
}
unsigned int m68k_read_memory_16(unsigned int address) {
- PLATFORM_CHECK_READ(OP_TYPE_WORD);
-
- if (mouse_hook_enabled) {
- if (address == JOY0DAT) {
- // Forward mouse valueses to Amyga.
- unsigned short result = (mouse_dy << 8) | (mouse_dx);
- mouse_dx = mouse_dy = 0;
- return (unsigned int)result;
- }
- if (address == CIAAPRA) {
- unsigned short result = (unsigned int)read16((uint32_t)address);
- if (mouse_buttons & 0x01) {
- mouse_buttons -= 1;
- return (unsigned int)(result | 0x40);
- }
- else
- return (unsigned int)result;
- }
- if (address == POTGOR) {
- unsigned short result = (unsigned int)read16((uint32_t)address);
- if (mouse_buttons & 0x02) {
- mouse_buttons -= 2;
- return (unsigned int)(result | 0x2);
- }
- else
- return (unsigned int)result;
- }
+ if (platform_read_check(OP_TYPE_WORD, address, &platform_res)) {
+ return platform_res;
}
-// if (address < 0xffffff) {
- address &=0xFFFFFF;
- return (unsigned int)read16((uint32_t)address);
-// }
+ if (address & 0xFF000000)
+ return 0;
-// return 1;
+ if (address & 0x01) {
+ return ((read8(address) << 8) | read8(address + 1));
+ }
+ return (unsigned int)read16((uint32_t)address);
}
unsigned int m68k_read_memory_32(unsigned int address) {
- PLATFORM_CHECK_READ(OP_TYPE_LONGWORD);
+ if (platform_read_check(OP_TYPE_LONGWORD, address, &platform_res)) {
+ return platform_res;
+ }
-// if (address < 0xffffff) {
- address &=0xFFFFFF;
- uint16_t a = read16(address);
- uint16_t b = read16(address + 2);
- return (a << 16) | b;
-// }
+ if (address & 0xFF000000)
+ return 0;
-// return 1;
+ if (address & 0x01) {
+ uint32_t c = read8(address);
+ c |= (be16toh(read16(address+1)) << 8);
+ c |= (read8(address + 3) << 24);
+ return htobe32(c);
+ }
+ uint16_t a = read16(address);
+ uint16_t b = read16(address + 2);
+ return (a << 16) | b;
}
-#define PLATFORM_CHECK_WRITE(a) \
- if (address >= cfg->custom_low && address < cfg->custom_high) { \
- switch(cfg->platform->id) { \
- case PLATFORM_AMIGA: { \
- if (custom_write_amiga(cfg, address, value, OP_TYPE_BYTE) != -1) { \
- return; \
- } \
- break; \
- } \
- default: \
- break; \
- } \
- } \
- if (address >= cfg->map_low && address < cfg->map_high) { \
- if (handle_mapped_write(cfg, address, value, OP_TYPE_BYTE, ovl) != -1) \
- return; \
- } \
-
-void m68k_write_memory_8(unsigned int address, unsigned int value) {
- PLATFORM_CHECK_WRITE(OP_TYPE_BYTE);
+static inline int32_t platform_write_check(uint8_t type, uint32_t addr, uint32_t val) {
+ switch (addr) {
+ case CIAAPRA:
+ if (ovl != (val & (1 << 0))) {
+ ovl = (val & (1 << 0));
+ printf("OVL:%x\n", ovl);
+ }
+ return 0;
+ break;
+ case SERDAT: {
+ char *serdat = (char *)&val;
+ // SERDAT word. see amiga dev docs appendix a; upper byte is control codes, and bit 0 is always 1.
+ // ignore this upper byte as it's not viewable data, only display lower byte.
+ printf("%c", serdat[0]);
+ return 0;
+ break;
+ }
+ case INTENA:
+ // This code is kind of strange and should probably be reworked/revoked.
+ if (!(val & 0x8000)) {
+ if (val & 0x04) {
+ int2_enabled = 0;
+ }
+ }
+ else if (val & 0x04) {
+ int2_enabled = 1;
+ }
+ return 0;
+ break;
+ default:
+ break;
+ }
- if (address == 0xbfe001) {
- ovl = (value & (1 << 0));
- printf("OVL:%x\n", ovl);
+ switch (cfg->platform->id) {
+ case PLATFORM_AMIGA:
+ if (addr >= cfg->custom_low && addr < cfg->custom_high) {
+ if (addr >= PISCSI_OFFSET && addr < PISCSI_UPPER) {
+ handle_piscsi_write(addr, val, type);
+ return 1;
+ }
+ if (addr >= PINET_OFFSET && addr < PINET_UPPER) {
+ handle_pinet_write(addr, val, type);
+ return 1;
+ }
+ if (addr >= PIGFX_RTG_BASE && addr < PIGFX_UPPER) {
+ rtg_write((addr & 0x0FFFFFFF), val, type);
+ return 1;
+ }
+ if (custom_write_amiga(cfg, addr, val, type) != -1) {
+ return 1;
+ }
+ }
+ break;
+ default:
+ break;
}
-// if (address < 0xffffff) {
- address &=0xFFFFFF;
- write8((uint32_t)address, value);
- return;
-// }
+ if (ovl || (addr >= cfg->mapped_low && addr < cfg->mapped_high)) {
+ if (handle_mapped_write(cfg, addr, val, type) != -1) {
+ return 1;
+ }
+ }
-// return;
+ return 0;
}
-void m68k_write_memory_16(unsigned int address, unsigned int value) {
- PLATFORM_CHECK_WRITE(OP_TYPE_WORD);
-// if (address < 0xffffff) {
- address &=0xFFFFFF;
- write16((uint32_t)address, value);
+void m68k_write_memory_8(unsigned int address, unsigned int value) {
+ if (platform_write_check(OP_TYPE_BYTE, address, value))
return;
-// }
-// return;
-}
-
-void m68k_write_memory_32(unsigned int address, unsigned int value) {
- PLATFORM_CHECK_WRITE(OP_TYPE_LONGWORD);
-// if (address < 0xffffff) {
- address &=0xFFFFFF;
- write16(address, value >> 16);
- write16(address + 2, value);
+ if (address & 0xFF000000)
return;
-// }
-// return;
+ write8((uint32_t)address, value);
+ return;
}
-inline void write16(uint32_t address, uint32_t data) {
- uint32_t addr_h_s = (address & 0x0000ffff) << 8;
- uint32_t addr_h_r = (~address & 0x0000ffff) << 8;
- uint32_t addr_l_s = (address >> 16) << 8;
- uint32_t addr_l_r = (~address >> 16) << 8;
- uint32_t data_s = (data & 0x0000ffff) << 8;
- uint32_t data_r = (~data & 0x0000ffff) << 8;
-
- // asm volatile ("dmb" ::: "memory");
- W16
- *(gpio) = gpfsel0_o;
- *(gpio + 1) = gpfsel1_o;
- *(gpio + 2) = gpfsel2_o;
-
- *(gpio + 7) = addr_h_s;
- *(gpio + 10) = addr_h_r;
- GPIO_CLR = 1 << 7;
- GPIO_SET = 1 << 7;
-
- *(gpio + 7) = addr_l_s;
- *(gpio + 10) = addr_l_r;
- GPIO_CLR = 1 << 7;
- GPIO_SET = 1 << 7;
-
- // write phase
- *(gpio + 7) = data_s;
- *(gpio + 10) = data_r;
- GPIO_CLR = 1 << 7;
- GPIO_SET = 1 << 7;
-
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
- while ((GET_GPIO(0)))
- ;
- // asm volatile ("dmb" ::: "memory");
-}
-
-inline void write8(uint32_t address, uint32_t data) {
- if ((address & 1) == 0)
- data = data + (data << 8); // EVEN, A0=0,UDS
- else
- data = data & 0xff; // ODD , A0=1,LDS
- uint32_t addr_h_s = (address & 0x0000ffff) << 8;
- uint32_t addr_h_r = (~address & 0x0000ffff) << 8;
- uint32_t addr_l_s = (address >> 16) << 8;
- uint32_t addr_l_r = (~address >> 16) << 8;
- uint32_t data_s = (data & 0x0000ffff) << 8;
- uint32_t data_r = (~data & 0x0000ffff) << 8;
-
- // asm volatile ("dmb" ::: "memory");
- W8
- *(gpio) = gpfsel0_o;
- *(gpio + 1) = gpfsel1_o;
- *(gpio + 2) = gpfsel2_o;
-
- *(gpio + 7) = addr_h_s;
- *(gpio + 10) = addr_h_r;
- GPIO_CLR = 1 << 7;
- GPIO_SET = 1 << 7;
-
- *(gpio + 7) = addr_l_s;
- *(gpio + 10) = addr_l_r;
- GPIO_CLR = 1 << 7;
- GPIO_SET = 1 << 7;
-
- // write phase
- *(gpio + 7) = data_s;
- *(gpio + 10) = data_r;
- GPIO_CLR = 1 << 7;
- GPIO_SET = 1 << 7;
-
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
- while ((GET_GPIO(0)))
- ;
- // asm volatile ("dmb" ::: "memory");
-}
-
-inline uint32_t read16(uint32_t address) {
- volatile int val;
- uint32_t addr_h_s = (address & 0x0000ffff) << 8;
- uint32_t addr_h_r = (~address & 0x0000ffff) << 8;
- uint32_t addr_l_s = (address >> 16) << 8;
- uint32_t addr_l_r = (~address >> 16) << 8;
-
- // asm volatile ("dmb" ::: "memory");
- R16
- *(gpio) = gpfsel0_o;
- *(gpio + 1) = gpfsel1_o;
- *(gpio + 2) = gpfsel2_o;
-
- *(gpio + 7) = addr_h_s;
- *(gpio + 10) = addr_h_r;
- GPIO_CLR = 1 << 7;
- GPIO_SET = 1 << 7;
-
- *(gpio + 7) = addr_l_s;
- *(gpio + 10) = addr_l_r;
- GPIO_CLR = 1 << 7;
- GPIO_SET = 1 << 7;
-
- // read phase
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
- GPIO_CLR = 1 << 6;
- while (!(GET_GPIO(0)))
- ;
- GPIO_CLR = 1 << 6;
- val = *(gpio + 13);
- GPIO_SET = 1 << 6;
- // asm volatile ("dmb" ::: "memory");
- return (val >> 8) & 0xffff;
-}
+void m68k_write_memory_16(unsigned int address, unsigned int value) {
+ if (platform_write_check(OP_TYPE_WORD, address, value))
+ return;
-inline uint32_t read8(uint32_t address) {
- int val;
- uint32_t addr_h_s = (address & 0x0000ffff) << 8;
- uint32_t addr_h_r = (~address & 0x0000ffff) << 8;
- uint32_t addr_l_s = (address >> 16) << 8;
- uint32_t addr_l_r = (~address >> 16) << 8;
-
- // asm volatile ("dmb" ::: "memory");
- R8
- *(gpio) = gpfsel0_o;
- *(gpio + 1) = gpfsel1_o;
- *(gpio + 2) = gpfsel2_o;
-
- *(gpio + 7) = addr_h_s;
- *(gpio + 10) = addr_h_r;
- GPIO_CLR = 1 << 7;
- GPIO_SET = 1 << 7;
-
- *(gpio + 7) = addr_l_s;
- *(gpio + 10) = addr_l_r;
- GPIO_CLR = 1 << 7;
- GPIO_SET = 1 << 7;
-
- // read phase
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
-
- GPIO_CLR = 1 << 6;
- while (!(GET_GPIO(0)))
- ;
- GPIO_CLR = 1 << 6;
- val = *(gpio + 13);
- GPIO_SET = 1 << 6;
- // asm volatile ("dmb" ::: "memory");
-
- val = (val >> 8) & 0xffff;
- if ((address & 1) == 0)
- return (val >> 8) & 0xff; // EVEN, A0=0,UDS
- else
- return val & 0xff; // ODD , A0=1,LDS
-}
+ if (address & 0xFF000000)
+ return;
-/******************************************************/
-
-void write_reg(unsigned int value) {
- STATUSREGADDR
- *(gpio) = gpfsel0_o;
- *(gpio + 1) = gpfsel1_o;
- *(gpio + 2) = gpfsel2_o;
- *(gpio + 7) = (value & 0xffff) << 8;
- *(gpio + 10) = (~value & 0xffff) << 8;
- GPIO_CLR = 1 << 7;
- GPIO_CLR = 1 << 7; // delay
- GPIO_SET = 1 << 7;
- GPIO_SET = 1 << 7;
- // Bus HIGH-Z
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
-}
+ if (address & 0x01) {
+ write8(value & 0xFF, address);
+ write8((value >> 8) & 0xFF, address + 1);
+ return;
+ }
-uint16_t read_reg(void) {
- uint32_t val;
- STATUSREGADDR
- // Bus HIGH-Z
- *(gpio) = gpfsel0;
- *(gpio + 1) = gpfsel1;
- *(gpio + 2) = gpfsel2;
- GPIO_CLR = 1 << 6;
- GPIO_CLR = 1 << 6; // delay
- GPIO_CLR = 1 << 6;
- GPIO_CLR = 1 << 6;
- val = *(gpio + 13);
- GPIO_SET = 1 << 6;
- return (uint16_t)(val >> 8);
+ write16((uint32_t)address, value);
+ return;
}
-//
-// Set up a memory regions to access GPIO
-//
-void setup_io() {
- /* open /dev/mem */
- if ((mem_fd = open("/dev/mem", O_RDWR | O_SYNC)) < 0) {
- printf("can't open /dev/mem \n");
- exit(-1);
- }
-
- /* mmap GPIO */
- gpio_map = mmap(
- NULL, // Any adddress in our space will do
- BCM2708_PERI_SIZE, // Map length
- PROT_READ | PROT_WRITE, // Enable reading & writting to mapped memory
- MAP_SHARED, // Shared with other processes
- mem_fd, // File to map
- BCM2708_PERI_BASE // Offset to GPIO peripheral
- );
+void m68k_write_memory_32(unsigned int address, unsigned int value) {
+ if (platform_write_check(OP_TYPE_LONGWORD, address, value))
+ return;
- close(mem_fd); // No need to keep mem_fd open after mmap
+ if (address & 0xFF000000)
+ return;
- if (gpio_map == MAP_FAILED) {
- printf("gpio mmap error %d\n", (int)gpio_map); // errno also set!
- exit(-1);
+ if (address & 0x01) {
+ write8(value & 0xFF, address);
+ write16(htobe16(((value >> 8) & 0xFFFF)), address + 1);
+ write8((value >> 24), address + 3);
+ return;
}
- gpio = ((volatile unsigned *)gpio_map) + GPIO_ADDR / 4;
- gpclk = ((volatile unsigned *)gpio_map) + GPCLK_ADDR / 4;
-
-} // setup_io
+ write16(address, value >> 16);
+ write16(address + 2, value);
+ return;
+}