#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 BCM2708_PERI_BASE 0x20000000 //pi0-1
//#define BCM2708_PERI_BASE 0xFE000000 //pi4
#define GAYLEBASE 0xD80000 // D7FFFF
#define GAYLESIZE 0x6FFFF
+#define JOY0DAT 0xDFF00A
+#define JOY1DAT 0xDFF00C
+#define CIAAPRA 0xBFE001
+#define POTGOR 0xDFF016
+
+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;
+
#define KICKBASE 0xF80000
#define KICKSIZE 0x7FFFF
-int mem_fd;
+int mem_fd, mouse_fd = -1, keyboard_fd = -1;
int mem_fd_gpclk;
+int gayle_emulation_enabled = 1;
void *gpio_map;
void *gpclk_map;
+// Configurable emulator options
+unsigned int cpu_type = M68K_CPU_TYPE_68000;
+unsigned int loop_cycles = 300;
+struct emulator_config *cfg = NULL;
+char keyboard_file[256] = "/dev/input/event0";
+
// I/O access
volatile unsigned int *gpio;
volatile unsigned int *gpclk;
volatile uint32_t srdata2;
volatile uint32_t srdata2_old;
-unsigned char g_kick[524288];
-unsigned char g_ram[FASTSIZE + 1]; /* RAM */
+//unsigned char g_kick[524288];
+//unsigned char g_ram[FASTSIZE + 1]; /* RAM */
unsigned char toggle;
-static volatile unsigned char ovl;
+int ovl;
static volatile unsigned char maprom;
void sigint_handler(int sig_num) {
- printf("\n Exit Ctrl+C %d\n", sig_num);
+ //if (sig_num) { }
+ //cpu_emulation_running = 0;
+
+ //return;
+ printf("Received sigint %d, exiting.\n", sig_num);
+ if (mouse_fd != -1)
+ close(mouse_fd);
+ if (mem_fd)
+ close(mem_fd);
+
exit(0);
}
void *iplThread(void *args) {
- printf("thread!/n");
+ printf("IPL thread running/n");
while (42) {
+
+ if (GET_GPIO(1) == 0) {
+ toggle = 1;
+ m68k_end_timeslice();
+ //printf("thread!/n");
+ } else {
+ toggle = 0;
+ };
usleep(1);
}
+
}
-int main() {
+int main(int argc, char *argv[]) {
int g;
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 (g + 1 >= argc) {
+ printf("%s switch found, but no CPU type specified.\n", argv[g]);
+ } else {
+ g++;
+ cpu_type = get_m68k_cpu_type(argv[g]);
+ }
+ }
+ else if (strcmp(argv[g], "--config-file") == 0 || strcmp(argv[g], "--config") == 0) {
+ if (g + 1 >= argc) {
+ printf("%s switch found, but no config filename specified.\n", argv[g]);
+ } else {
+ g++;
+ cfg = load_config_file(argv[g]);
+ }
+ }
+ else if (strcmp(argv[g], "--keyboard-file") == 0 || strcmp(argv[g], "--kbfile") == 0) {
+ if (g + 1 >= argc) {
+ printf("%s switch found, but no keyboard device path specified.\n", argv[g]);
+ } else {
+ g++;
+ strcpy(keyboard_file, argv[g]);
+ }
+ }
+ }
+
+ if (!cfg) {
+ printf("No config file specified. Trying to load default.cfg...\n");
+ cfg = load_config_file("default.cfg");
+ if (!cfg) {
+ printf("Couldn't load default.cfg, empty emulator config will be used.\n");
+ cfg = (struct emulator_config *)calloc(1, sizeof(struct emulator_config));
+ if (!cfg) {
+ printf("Failed to allocate memory for emulator config!\n");
+ return 1;
+ }
+ memset(cfg, 0x00, sizeof(struct emulator_config));
+ }
+ }
+
+ if (cfg) {
+ if (cfg->cpu_type) cpu_type = cfg->cpu_type;
+ if (cfg->loop_cycles) loop_cycles = cfg->loop_cycles;
+
+ if (!cfg->platform)
+ cfg->platform = make_platform_config("none", "generic");
+ cfg->platform->platform_initial_setup(cfg);
+ }
+
+ if (cfg->mouse_enabled) {
+ mouse_fd = open(cfg->mouse_file, O_RDONLY | O_NONBLOCK);
+ if (mouse_fd == -1) {
+ printf("Failed to open %s, can't enable mouse hook.\n", cfg->mouse_file);
+ cfg->mouse_enabled = 0;
+ }
+ }
+
+ 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
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");
write_reg(0x00);
usleep(100);
- // load kick.rom if present
- maprom = 1;
- int fd = 0;
- fd = open("kick.rom", O_RDONLY);
- if (fd < 1) {
- printf("Failed loading kick.rom, using motherboard kickstart\n");
- maprom = 0;
- } else {
- int size = (int)lseek(fd, 0, SEEK_END);
- if (size == 0x40000) {
- lseek(fd, 0, SEEK_SET);
- read(fd, &g_kick, size);
- lseek(fd, 0, SEEK_SET);
- read(fd, &g_kick[0x40000], size);
- } else {
- lseek(fd, 0, SEEK_SET);
- read(fd, &g_kick, size);
- }
- printf("Loaded kick.rom with size %d kib\n", size / 1024);
- }
-
// reset amiga and statemachine
+ skip_everything:;
cpu_pulse_reset();
ovl = 1;
m68k_write_memory_8(0xbfe201, 0x0001); // AMIGA OVL
usleep(1500);
m68k_init();
- m68k_set_cpu_type(M68K_CPU_TYPE_68030);
+ 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, 0x0);
}
- /*
- pthread_t id;
- int err;
- //err = pthread_create(&id, NULL, &iplThread, NULL);
+/*
+ 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;
m68k_pulse_reset();
while (42) {
- m68k_execute(3000);
+ 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);
+ }
+ }
+
+ 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);
+*/
+
+
if (GET_GPIO(1) == 0) {
srdata = read_reg();
m68k_set_irq((srdata >> 13) & 0xff);
} else {
- m68k_set_irq(0);
+ if (CheckIrq() == 1) {
+ write16(0xdff09c, 0x8008);
+ m68k_set_irq(2);
+ }
+ else
+ m68k_set_irq(0);
};
+
}
+ stop_cpu_emulation:;
+
+ if (mouse_fd != -1)
+ close(mouse_fd);
+ if (mem_fd)
+ close(mem_fd);
+
return 0;
}
return level;
}
-unsigned int m68k_read_memory_8(unsigned int address) {
- if (address > FASTBASE && address < FASTBASE + FASTSIZE) {
- return g_ram[address - FASTBASE];
+static unsigned int target = 0;
+
+#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->mapped_low && address < cfg->mapped_high)) { \
+ if (handle_mapped_read(cfg, address, &target, a) != -1) \
+ return target; \
}
- if (maprom == 1) {
- if (address > KICKBASE && address < KICKBASE + KICKSIZE) {
- return g_kick[address - KICKBASE];
- }
- }
-
- if (address > GAYLEBASE && address < GAYLEBASE + GAYLESIZE) {
- return readGayleB(address);
- }
+unsigned int m68k_read_memory_8(unsigned int address) {
+ PLATFORM_CHECK_READ(OP_TYPE_BYTE);
- if (address < 0xffffff) {
+ address &=0xFFFFFF;
+// if (address < 0xffffff) {
return read8((uint32_t)address);
- }
+// }
- return 0;
+// return 1;
}
unsigned int m68k_read_memory_16(unsigned int address) {
- if (address > FASTBASE && address < FASTBASE + FASTSIZE) {
- return be16toh(*(uint16_t *)&g_ram[address - FASTBASE]);
- }
-
- if (maprom == 1) {
- if (address > KICKBASE && address < KICKBASE + KICKSIZE) {
- return be16toh(*(uint16_t *)&g_kick[address - KICKBASE]);
+ 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 (address > GAYLEBASE && address < GAYLEBASE + GAYLESIZE) {
- return readGayle(address);
- }
-
- if (address < 0xffffff) {
+// if (address < 0xffffff) {
+ address &=0xFFFFFF;
return (unsigned int)read16((uint32_t)address);
- }
+// }
- return 0;
+// return 1;
}
unsigned int m68k_read_memory_32(unsigned int address) {
- if (address > FASTBASE && address < FASTBASE + FASTSIZE) {
- return be32toh(*(uint32_t *)&g_ram[address - FASTBASE]);
- }
-
- if (maprom == 1) {
- if (address > KICKBASE && address < KICKBASE + KICKSIZE) {
- return be32toh(*(uint32_t *)&g_kick[address - KICKBASE]);
- }
- }
+ PLATFORM_CHECK_READ(OP_TYPE_LONGWORD);
- if (address > GAYLEBASE && address < GAYLEBASE + GAYLESIZE) {
- return readGayleL(address);
- }
-
- if (address < 0xffffff) {
+// if (address < 0xffffff) {
+ address &=0xFFFFFF;
uint16_t a = read16(address);
uint16_t b = read16(address + 2);
return (a << 16) | b;
- }
+// }
- return 0;
+// return 1;
}
-void m68k_write_memory_8(unsigned int address, unsigned int value) {
- if (address > FASTBASE && address < FASTBASE + FASTSIZE) {
- g_ram[address - FASTBASE] = value;
- return;
+#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, a) != -1) { \
+ return; \
+ } \
+ break; \
+ } \
+ default: \
+ break; \
+ } \
+ } \
+ if (address >= cfg->mapped_low && address < cfg->mapped_high) { \
+ if (handle_mapped_write(cfg, address, value, a) != -1) \
+ return; \
}
- if (address > GAYLEBASE && address < GAYLEBASE + GAYLESIZE) {
- writeGayleB(address, value);
- return;
- }
+void m68k_write_memory_8(unsigned int address, unsigned int value) {
+ PLATFORM_CHECK_WRITE(OP_TYPE_BYTE);
if (address == 0xbfe001) {
- ovl = (value & (1 << 0));
- printf("OVL:%x\n", ovl);
+ if (ovl != (value & (1 << 0))) {
+ ovl = (value & (1 << 0));
+ printf("OVL:%x\n", ovl);
+ }
}
- if (address < 0xffffff) {
+// if (address < 0xffffff) {
+ address &=0xFFFFFF;
write8((uint32_t)address, value);
return;
- }
+// }
- return;
+// return;
}
void m68k_write_memory_16(unsigned int address, unsigned int value) {
- if (address > FASTBASE && address < FASTBASE + FASTSIZE) {
- *(uint16_t *)&g_ram[address - FASTBASE] = htobe16(value);
- return;
- }
-
- if (address > GAYLEBASE && address < GAYLEBASE + GAYLESIZE) {
- writeGayle(address, value);
- return;
- }
+ PLATFORM_CHECK_WRITE(OP_TYPE_WORD);
- if (address < 0xffffff) {
+// if (address < 0xffffff) {
+ address &=0xFFFFFF;
write16((uint32_t)address, value);
return;
- }
- return;
+// }
+// return;
}
void m68k_write_memory_32(unsigned int address, unsigned int value) {
- if (address > FASTBASE && address < FASTBASE + FASTSIZE) {
- *(uint32_t *)&g_ram[address - FASTBASE] = htobe32(value);
- return;
- }
-
- if (address > GAYLEBASE && address < GAYLEBASE + GAYLESIZE) {
- writeGayleL(address, value);
- }
+ PLATFORM_CHECK_WRITE(OP_TYPE_LONGWORD);
- if (address < 0xffffff) {
+// if (address < 0xffffff) {
+ address &=0xFFFFFF;
write16(address, value >> 16);
write16(address + 2, value);
return;
- }
+// }
- return;
+// return;
}
-void write16(uint32_t address, uint32_t data) {
+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 data_r = (~data & 0x0000ffff) << 8;
// asm volatile ("dmb" ::: "memory");
- W16 *(gpio) = gpfsel0_o;
+ W16
+ *(gpio) = gpfsel0_o;
*(gpio + 1) = gpfsel1_o;
*(gpio + 2) = gpfsel2_o;
// asm volatile ("dmb" ::: "memory");
}
-void write8(uint32_t address, uint32_t data) {
+inline void write8(uint32_t address, uint32_t data) {
if ((address & 1) == 0)
data = data + (data << 8); // EVEN, A0=0,UDS
else
uint32_t data_r = (~data & 0x0000ffff) << 8;
// asm volatile ("dmb" ::: "memory");
- W8 *(gpio) = gpfsel0_o;
+ W8
+ *(gpio) = gpfsel0_o;
*(gpio + 1) = gpfsel1_o;
*(gpio + 2) = gpfsel2_o;
// asm volatile ("dmb" ::: "memory");
}
-uint32_t read16(uint32_t address) {
+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;
// asm volatile ("dmb" ::: "memory");
R16
-
- *(gpio) = gpfsel0_o;
+ *(gpio) = gpfsel0_o;
*(gpio + 1) = gpfsel1_o;
*(gpio + 2) = gpfsel2_o;
return (val >> 8) & 0xffff;
}
-uint32_t read8(uint32_t address) {
+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_r = (~address >> 16) << 8;
// asm volatile ("dmb" ::: "memory");
- R8 *(gpio) = gpfsel0_o;
+ R8
+ *(gpio) = gpfsel0_o;
*(gpio + 1) = gpfsel1_o;
*(gpio + 2) = gpfsel2_o;
val = (val >> 8) & 0xffff;
if ((address & 1) == 0)
- val = (val >> 8) & 0xff; // EVEN, A0=0,UDS
+ return (val >> 8) & 0xff; // EVEN, A0=0,UDS
else
- val = val & 0xff; // ODD , A0=1,LDS
- return val;
+ return val & 0xff; // ODD , A0=1,LDS
}
/******************************************************/
projects / pistorm / blobdiff