X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=emulator.c;h=1be7bcd00ebb3e58229ac6a725a9ae801378e272;hb=3203ac85909c4feadb96bdf56b373785f9c81210;hp=e0b17a8b81050e0dcd6dd10456b54521830af29c;hpb=f2baf5522308f413e5094dd5d853eae294d58c52;p=pistorm diff --git a/emulator.c b/emulator.c index e0b17a8..1be7bcd 100644 --- a/emulator.c +++ b/emulator.c @@ -1,834 +1,926 @@ -#include -#include -#include -#include +// SPDX-License-Identifier: MIT + +#include "m68k.h" +#include "emulator.h" +#include "platforms/platforms.h" +#include "input/input.h" +#include "m68kcpu.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 "gpio/ps_protocol.h" + +#include #include +#include #include -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include #include -#include #include +#include #include -#include -#include -#include "m68k.h" -#include "main.h" -#include -#include "Gayle.h" -#include "ide.h" - -//#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<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; +} -// 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; +void *cpu_task() { + m68k_pulse_reset(); -// 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)) +cpu_loop: + if (mouse_hook_enabled) { + get_mouse_status(&mouse_dx, &mouse_dy, &mouse_buttons, &mouse_extra); + } -#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 + 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); + } -#define GET_GPIO(g) (*(gpio+13)&(1<> 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"); + } -#define GPIO_PULL *(gpio+37) // Pull up/pull down -#define GPIO_PULLCLK0 *(gpio+38) // Pull up/pull down clock + 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 (end_signal) + goto stop_cpu_emulation; -void setup_io(); + goto cpu_loop; -uint32_t read8(uint32_t address); -void write8(uint32_t address, uint32_t data); +stop_cpu_emulation: + printf("[CPU] End of CPU thread\n"); + return (void *)NULL; +} -uint32_t read16(uint32_t address); -void write16(uint32_t address, uint32_t data); +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"; -void write32(uint32_t address, uint32_t data); -uint32_t read32(uint32_t address); + printf("[KBD] Keyboard thread started\n"); -uint16_t read_reg(void); -void write_reg(unsigned int value); + // 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); + } -volatile uint16_t srdata; -volatile uint32_t srdata2; -volatile uint32_t srdata2_old; + 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; + } -unsigned char g_kick[524288]; -unsigned char g_ram[FASTSIZE+1]; /* RAM */ -unsigned char toggle; -static volatile unsigned char ovl; -static volatile unsigned char maprom; + // 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; + } + } + } -/* Signal Handler for SIGINT */ -void sigint_handler(int sig_num) -{ - /* Reset handler to catch SIGINT next time. - Refer http://en.cppreference.com/w/c/program/signal */ - printf("\n User provided signal handler for Ctrl+C \n"); + goto key_loop; - /* Do a graceful cleanup of the program like: free memory/resources/etc and exit */ - exit(0); +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; + } -void* iplThread(void *args){ - -printf("thread!/n"); -//srdata2_old = read_reg(); -//toggle = 0; - -while(42){ -//printf("thread!/n"); - if (GET_GPIO(1) == 0){ - srdata = read_reg(); - if (srdata != srdata2_old){ - srdata2 = ((srdata >> 13)&0xff); - //printf("STATUS: %d\n", srdata2); - srdata2_old = srdata; - m68k_set_irq(srdata2); - toggle = 1; - } - } else { - if (toggle != 0){ - /* - srdata = read_reg(); - srdata2 = ((srdata >> 13)&0xff); - srdata2_old = srdata; - m68k_set_irq(srdata2); - */ - m68k_set_irq(0); - //printf("STATUS: 0\n"); - toggle = 0; - } - } - - usleep(1); - } + cpu_emulation_running = 0; + do_disasm = 0; } +unsigned int ovl; +static volatile unsigned char maprom; -int main() { - +void sigint_handler(int sig_num) { + //if (sig_num) { } + //cpu_emulation_running = 0; -int g; -const struct sched_param priority = {99}; + //return; + printf("Received sigint %d, exiting.\n", sig_num); + if (mouse_fd != -1) + close(mouse_fd); + if (mem_fd) + close(mem_fd); - sched_setscheduler(0, SCHED_RR , &priority); - mlockall(MCL_CURRENT); // lock in memory to keep us from paging out + if (cfg->platform->shutdown) { + cfg->platform->shutdown(cfg); + } + printf("IRQs triggered: %lld\n", trig_irq); + printf("IRQs serviced: %lld\n", serv_irq); - InitGayle(); - - signal(SIGINT, sigint_handler); - setup_io(); - - //Enable 200MHz CLK output on GPIO4, adjust divider and pll source depending on pi model - printf("Enable 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 aus 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); - -/* - maprom = 0; - FILE * fp; - fp = fopen("kick.rom", "rb"); - if (!fp) - { - printf("kick.rom cannot be opened\n"); - } else { - printf("kick.rom found, using that instead of motherboard rom\n"); - while (1) - { - unsigned int reads = fread(&g_kick, sizeof(g_kick), 1, fp); - if (reads == 0){ - printf("failed loading kick.rom\n"); - }else{ - printf("loaded kick.rom\n"); - maprom = 1; - } - break; - } - } - */ - 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); - } - - -cpu_pulse_reset(); - - ovl=1; - m68k_write_memory_8(0xbfe201,0x0001); //AMIGA OVL - m68k_write_memory_8(0xbfe001,0x0001); //AMIGA OVL high (ROM@0x0) - //cpu_pulse_reset(); - - usleep(1500); - - m68k_init(); - m68k_set_cpu_type(M68K_CPU_TYPE_68030); - 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"); -*/ - - m68k_pulse_reset(); - while(42) { - - m68k_execute(3000); - if (GET_GPIO(1) == 0){ - srdata = read_reg(); - m68k_set_irq((srdata >> 13)&0xff); - } else { - m68k_set_irq(0); - }; - } - - return 0; + exit(0); } +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], "--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)); + } + } -void cpu_pulse_reset(void){ + if (cfg) { + if (cfg->cpu_type) cpu_type = cfg->cpu_type; + if (cfg->loop_cycles) loop_cycles = cfg->loop_cycles; - write_reg(0x00); - printf("Status Reg%x\n",read_reg()); - usleep(100000); - write_reg(0x02); - printf("Status Reg%x\n",read_reg()); -} + 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_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"); + } + } + 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"); + } -int cpu_irq_ack(int level) -{ - printf("cpu irq ack\n"); - return level; -} + if (cfg->mouse_autoconnect) + mouse_hook_enabled = 1; + if (cfg->keyboard_autoconnect) + kb_hook_enabled = 1; + InitGayle(); -unsigned int m68k_read_memory_8(unsigned int address){ + 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"); + gpio_enable_200mhz(); + + // reset cpld statemachine first + + write_reg(0x01); + usleep(100); + usleep(1500); + write_reg(0x00); + usleep(100); + + // reset amiga and statemachine + skip_everything:; + + usleep(1500); + + m68k_init(); + printf("Setting CPU type to %d.\n", cpu_type); + m68k_set_cpu_type(cpu_type); + cpu_pulse_reset(); + + if (maprom == 1) { + m68k_set_reg(M68K_REG_PC, 0xF80002); + } else { + m68k_set_reg(M68K_REG_PC, 0x0); + }*/ + ps_setup_protocol(); + 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); + cpu_pulse_reset(); + + pthread_t ipl_tid, cpu_tid, kbd_tid; + int err; + 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"); + } + // 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"); + } - if (maprom == 1){ - if(address>KICKBASE && addressGAYLEBASE && addressFASTBASE && addressKICKBASE && addressKICKBASE && address> 8); - return value; - } - } - - if(address>GAYLEBASE && addressFASTBASE && address> 8); - return value; - } - -/* - if (maprom == 1){ - if (ovl == 1 && address> 8);} - if (ovl == 0 && (address>KICKBASE && address> 8);} - } -*/ - if (address < 0xffffff){ - return (unsigned int)read16((uint32_t)address); - } - - return 0; +void cpu_pulse_reset(void) { + ps_pulse_reset(); + //write_reg(0x00); + // printf("Status Reg%x\n",read_reg()); + //usleep(100000); + //write_reg(0x02); + // printf("Status Reg%x\n",read_reg()); + 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(); } -unsigned int m68k_read_memory_32(unsigned int address){ - - if (maprom == 1){ - if(address>KICKBASE && address> 8) & 0xFF00FF ); - return value << 16 | value >> 16; - } - } - - if(address>GAYLEBASE && addressFASTBASE && address> 8) & 0xFF00FF ); - return value << 16 | value >> 16; - } - -/* - if (maprom == 1){ - if (ovl == 1 && address> 8) & 0xFF00FF ); - return value << 16 | value >> 16;} - if (ovl == 0 && (address>KICKBASE && address> 8) & 0xFF00FF ); - return value << 16 | value >> 16;} - } -*/ - if (address < 0xffffff){ - uint16_t a = read16(address); - uint16_t b = read16(address+2); - return (a << 16) | b; - } - - return 0; +int cpu_irq_ack(int level) { + printf("cpu irq ack\n"); + return level; } -void m68k_write_memory_8(unsigned int address, unsigned int value){ - - - if (address == 0xbfe001){ - ovl = (value & (1<<0)); - printf("OVL:%x\n", ovl ); - } - - - if(address>GAYLEBASE && address= cfg->custom_low && address < cfg->custom_high) { \ + unsigned int target = 0; \ + switch(cfg->platform->id) { \ + case PLATFORM_AMIGA: { \ + if (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \ + return handle_piscsi_read(address, a); \ + } \ + if (address >= PINET_OFFSET && address < PINET_UPPER) { \ + return handle_pinet_read(address, a); \ + } \ + if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \ + return rtg_read((address & 0x0FFFFFFF), a); \ + } \ + 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; \ + } +unsigned int m68k_read_memory_8(unsigned int address) { + PLATFORM_CHECK_READ(OP_TYPE_BYTE); - if(address>FASTBASE && address= 0xE90000 && address < 0xF00000) { + printf("BYTE read from DMAC @%.8X:", address); + uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_BYTE); + printf("%.2X\n", v); + M68K_END_TIMESLICE; + cpu_emulation_running = 0; + return v; + }*/ - if (address < 0xffffff){ - write8((uint32_t)address,value); - return; - } + /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) { + stop_cpu_emulation(1); + }*/ - return; -} -void m68k_write_memory_16(unsigned int address, unsigned int value){ -// if (address==0xdff030) printf("%c", value); + if (address & 0xFF000000) + return 0; - if(address>GAYLEBASE && addressFASTBASE && address> 8); - *dest = value; - return; - } + if (kb_hook_enabled) { + if (address == CIAAICR) { + if (get_num_kb_queued() && (!send_keypress || send_keypress == 1)) { + result |= 0x08; + if (!send_keypress) + send_keypress = 1; + } + if (send_keypress == 2) { + //result |= 0x02; + send_keypress = 0; + } + return result; + } + if (address == CIAADAT) { + //if (send_keypress) { + uint8_t c = 0, t = 0; + pop_queued_key(&c, &t); + t ^= 0x01; + result = ((c << 1) | t) ^ 0xFF; + send_keypress = 2; + //M68K_SET_IRQ(0); + //} + return result; + } + } - if (address < 0xffffff){ - write16((uint32_t)address,value); - return; - } - return; + return result; } -void m68k_write_memory_32(unsigned int address, unsigned int value){ - - - if(address>GAYLEBASE && addressFASTBASE && address> 8) & 0xFF00FF ); - value = value << 16 | value >> 16; - *dest = value; - return; - } - - if (address < 0xffffff){ - write16(address , value >> 16); - write16(address+2 , value ); - return; - } - - return; -} +unsigned int m68k_read_memory_16(unsigned int address) { + PLATFORM_CHECK_READ(OP_TYPE_WORD); + + /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) { + stop_cpu_emulation(1); + }*/ + + /*if (address >= 0xE90000 && address < 0xF00000) { + printf("WORD read from DMAC @%.8X:", address); + uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_WORD); + printf("%.2X\n", v); + M68K_END_TIMESLICE; + cpu_emulation_running = 0; + return v; + }*/ + + if (mouse_hook_enabled) { + if (address == JOY0DAT) { + // Forward mouse valueses to Amyga. + unsigned short result = (mouse_dy << 8) | (mouse_dx); + return (unsigned int)result; + } + /*if (address == CIAAPRA) { + unsigned short result = (unsigned int)read16((uint32_t)address); + if (mouse_buttons & 0x01) { + return (unsigned int)(result | 0x40); + } + else + return (unsigned int)result; + }*/ + if (address == POTGOR) { + unsigned short result = (unsigned int)read16((uint32_t)address); + // bit 1 rmb, bit 2 mmb + if (mouse_buttons & 0x06) { + return (unsigned int)((result ^ ((mouse_buttons & 0x02) << 9)) // move rmb to bit 10 + & (result ^ ((mouse_buttons & 0x04) << 6))); // move mmb to bit 8 + } + return (unsigned int)(result & 0xfffd); + } + } -/* -void write32(uint32_t address, uint32_t data){ - write16(address+2 , data); - write16(address , data >>16 ); -} + if (address & 0xFF000000) + return 0; -uint32_t read32(uint32_t address){ - uint16_t a = read16(address+2); - uint16_t b = read16(address); - return (a>>16)|b; -} -*/ - -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"); + if (address & 0x01) { + return ((read8(address) << 8) | read8(address + 1)); + } + return (unsigned int)read16((uint32_t)address); } - -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"); - GPIO_SET = 1 << 7; +unsigned int m68k_read_memory_32(unsigned int address) { + PLATFORM_CHECK_READ(OP_TYPE_LONGWORD); + + /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x080032F0 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x080032F0 + 0x4000) { + stop_cpu_emulation(1); + }*/ + + /*if (address >= 0xE90000 && address < 0xF00000) { + printf("LONGWORD read from DMAC @%.8X:", address); + uint32_t v = cdtv_dmac_read(address & 0xFFFF, OP_TYPE_LONGWORD); + printf("%.2X\n", v); + M68K_END_TIMESLICE; + cpu_emulation_running = 0; + return v; + }*/ + + if (address & 0xFF000000) + return 0; + + 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 (address >= PISCSI_OFFSET && address < PISCSI_UPPER) { \ + handle_piscsi_write(address, value, a); \ + } \ + if (address >= PINET_OFFSET && address < PINET_UPPER) { \ + handle_pinet_write(address, value, a); \ + } \ + if (address >= PIGFX_RTG_BASE && address < PIGFX_UPPER) { \ + rtg_write((address & 0x0FFFFFFF), value, a); \ + return; \ + } \ + 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; \ + } -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; - asm volatile ("nop" ::); - asm volatile ("nop" ::); - asm volatile ("nop" ::); - val = *(gpio + 13); - GPIO_SET = 1 << 6; - // asm volatile ("dmb" ::: "memory"); - return (val >>8)&0xffff; -} +void m68k_write_memory_8(unsigned int address, unsigned int value) { + PLATFORM_CHECK_WRITE(OP_TYPE_BYTE); + + /*if (address >= 0xE90000 && address < 0xF00000) { + printf("BYTE write to DMAC @%.8X: %.2X\n", address, value); + cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_BYTE); + M68K_END_TIMESLICE; + cpu_emulation_running = 0; + return; + }*/ + + if (address == 0xbfe001) { + if (ovl != (value & (1 << 0))) { + ovl = (value & (1 << 0)); + printf("OVL:%x\n", ovl); + } + } + if (address & 0xFF000000) + return; -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; - asm volatile ("nop" ::); - asm volatile ("nop" ::); - asm volatile ("nop" ::); - val = *(gpio + 13); - GPIO_SET = 1 << 6; - // asm volatile ("dmb" ::: "memory"); - - val = (val >>8)&0xffff; - if ((address & 1) == 0) - val = (val >> 8) & 0xff ; //EVEN, A0=0,UDS - else - val = val & 0xff ; //ODD , A0=1,LDS - return val; + write8((uint32_t)address, value); + return; } +void m68k_write_memory_16(unsigned int address, unsigned int value) { + PLATFORM_CHECK_WRITE(OP_TYPE_WORD); + + /*if (address >= 0xE90000 && address < 0xF00000) { + printf("WORD write to DMAC @%.8X: %.4X\n", address, value); + cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_WORD); + M68K_END_TIMESLICE; + cpu_emulation_running = 0; + return; + }*/ + + if (address == 0xDFF030) { + char *serdat = (char *)&value; + // 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]); + } + if (address == 0xDFF09A) { + if (!(value & 0x8000)) { + if (value & 0x04) { + int2_enabled = 0; + } + } + else if (value & 0x04) { + int2_enabled = 1; + } + } + if (address & 0xFF000000) + return; -/******************************************************/ - -void write_reg(unsigned int value) -{ - asm volatile ("dmb" ::: "memory"); - STATUSREGADDR - asm volatile ("nop" ::); - asm volatile ("nop" ::); - asm volatile ("nop" ::); - //Write Status register - GPIO_CLR = 1 << SA0; - GPIO_CLR = 1 << SA1; - GPIO_SET = 1 << SA2; - - *(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; - asm volatile ("dmb" ::: "memory"); -} - + if (address & 0x01) + printf("Unaligned WORD write!\n"); -uint16_t read_reg(void) -{ - uint32_t val; - - asm volatile ("dmb" ::: "memory"); - STATUSREGADDR - asm volatile ("nop" ::); - asm volatile ("nop" ::); - asm volatile ("nop" ::); - //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; - asm volatile ("nop" ::); - asm volatile ("nop" ::); - asm volatile ("nop" ::); - val = *(gpio + 13); - GPIO_SET = 1 << 6; - asm volatile ("dmb" ::: "memory"); - - return (uint16_t)(val >> 8); + write16((uint32_t)address, value); + return; } +void m68k_write_memory_32(unsigned int address, unsigned int value) { + PLATFORM_CHECK_WRITE(OP_TYPE_LONGWORD); -// -// 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 - ); - - close(mem_fd); //No need to keep mem_fd open after mmap + /*if (address >= 0xE90000 && address < 0xF00000) { + printf("LONGWORD write to DMAC @%.8X: %.8X\n", address, value); + cdtv_dmac_write(address & 0xFFFF, value, OP_TYPE_LONGWORD); + M68K_END_TIMESLICE; + cpu_emulation_running = 0; + return; + }*/ - if (gpio_map == MAP_FAILED) { - printf("gpio mmap error %d\n", (int)gpio_map);//errno also set! - exit(-1); - } + if (address & 0xFF000000) + return; - gpio = ((volatile unsigned *)gpio_map) + GPIO_ADDR/4; - gpclk = ((volatile unsigned *)gpio_map) + GPCLK_ADDR/4; - - -} // setup_io + if (address & 0x01) + printf("Unaligned LONGWORD write!\n"); + write16(address, value >> 16); + write16(address + 2, value); + return; +}