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- /*
- * =====================================================================================
- *
- * ________ .__ __ ________ ____ ________
- * \_____ \ __ __|__| ____ | | __\______ \ _______ _/_ |/ _____/
- * / / \ \| | \ |/ ___\| |/ / | | \_/ __ \ \/ /| / __ \
- * / \_/. \ | / \ \___| < | ` \ ___/\ / | \ |__\ \
- * \_____\ \_/____/|__|\___ >__|_ \/_______ /\___ >\_/ |___|\_____ /
- * \__> \/ \/ \/ \/ \/
- *
- * www.optixx.org
- *
- *
- * Version: 1.0
- * Created: 07/21/2009 03:32:16 PM
- * Author: david@optixx.org
- *
- * =====================================================================================
- */
- #include <avr/io.h>
- #include <avr/interrupt.h>
- #include <util/delay.h>
- #include <stdlib.h>
- #include <avr/pgmspace.h>
- #include <avr/eeprom.h>
- #include "usbdrv.h"
- #include "oddebug.h"
- #include "config.h"
- #include "requests.h"
- #include "uart.h"
- #include "sram.h"
- #include "debug.h"
- #include "info.h"
- #include "dump.h"
- #include "crc.h"
- #include "usb_bulk.h"
- #include "timer.h"
- #include "watchdog.h"
- #include "rle.h"
- #include "loader.h"
- #include "command.h"
- #include "shared_memory.h"
- #include "testing.h"
- extern const char _rom[] PROGMEM;
- extern FILE uart_stdout;
- uint8_t debug_level = (DEBUG | DEBUG_USB | DEBUG_CRC);
- uint8_t read_buffer[TRANSFER_BUFFER_SIZE];
- uint32_t req_addr = 0;
- uint32_t req_addr_end = 0;
- uint32_t req_size;
- uint8_t req_bank;
- uint32_t req_bank_size;
- uint16_t req_bank_cnt;
- uint8_t req_state = REQ_STATUS_IDLE;
- uint8_t rx_remaining = 0;
- uint8_t tx_remaining = 0;
- uint16_t sync_errors = 0;
- uint8_t tx_buffer[32];
- uint8_t data_buffer[4];
- uint32_t addr;
- uint16_t crc = 0;
- usbMsgLen_t usbFunctionSetup(uchar data[8])
- {
- usbRequest_t *rq = (void *) data;
- uint8_t ret_len = 0;
- if (rq->bRequest == USB_BULK_UPLOAD_INIT) {
- req_bank = 0;
- rx_remaining = 0;
- debug(DEBUG_USB, "USB_BULK_UPLOAD_INIT: %i %i\n", rq->wValue.word,
- rq->wIndex.word);
- req_bank_size = (uint32_t) (1L << rq->wValue.word);
- req_bank_cnt = rq->wIndex.word;
- req_addr_end = (uint32_t) req_bank_size *req_bank_cnt;
- sync_errors = 0;
- debug(DEBUG_USB,
- "USB_BULK_UPLOAD_INIT: bank_size=0x%08lx bank_cnt=0x%x end_addr=0x%08lx\n",
- req_bank_size, req_bank_cnt, req_addr_end);
- shared_memory_write(SHARED_MEM_TX_CMD_BANK_COUNT, req_bank_cnt);
- if (req_addr == 0x000000) {
- timer_start();
- }
- /*
- * -------------------------------------------------------------------------
- */
- } else if (rq->bRequest == USB_BULK_UPLOAD_ADDR) {
- req_state = REQ_STATUS_BULK_UPLOAD;
- req_addr = rq->wValue.word;
- req_addr = req_addr << 16;
- req_addr = req_addr | rq->wIndex.word;
- rx_remaining = rq->wLength.word;
- if (req_addr && req_addr % req_bank_size == 0) {
- #ifdef FLT_DEBUG
- debug(DEBUG_USB,
- "USB_BULK_UPLOAD_ADDR: req_bank=0x%02x addr=0x%08lx time=%.4f\n",
- req_bank, req_addr, timer_stop());
- #else
- debug(DEBUG_USB,
- "USB_BULK_UPLOAD_ADDR: req_bank=0x%02x addr=0x%08lx time=%i\n",
- req_bank, req_addr, timer_stop_int());
- #endif
- req_bank++;
- shared_memory_write(SHARED_MEM_TX_CMD_UPLOAD_PROGESS, req_bank);
- sram_bulk_write_start(req_addr);
- timer_start();
- } else {
- sram_bulk_write_start(req_addr);
- }
- ret_len = USB_MAX_TRANS;
- /*
- * -------------------------------------------------------------------------
- */
- } else if (rq->bRequest == USB_BULK_UPLOAD_NEXT) {
- req_state = REQ_STATUS_BULK_UPLOAD;
- req_addr = rq->wValue.word;
- req_addr = req_addr << 16;
- req_addr = req_addr | rq->wIndex.word;
- rx_remaining = rq->wLength.word;
- #if 0
- if (req_addr && (req_addr % 0x1000) == 0) {
- debug(DEBUG_USB,
- "USB_BULK_UPLOAD_NEXT: bank=0x%02x addr=0x%08lx crc=%04x\n",
- req_bank, req_addr, crc_check_bulk_memory(req_addr - 0x1000,
- req_addr,
- req_bank_size));
- }
- sram_bulk_write_start(req_addr);
- #endif
- if (req_addr && (req_addr % req_bank_size) == 0) {
- #ifdef FLT_DEBUG
- debug(DEBUG_USB,
- "USB_BULK_UPLOAD_NEXT: req_bank=0x%02x addr=0x%08lx time=%.4f\n",
- req_bank, req_addr, timer_stop());
- #else
- debug(DEBUG_USB,
- "USB_BULK_UPLOAD_NEXT: req_bank=0x%02x addr=0x%08lx time=%i\n",
- req_bank, req_addr, timer_stop_int());
- #endif
- req_bank++;
- timer_start();
- shared_memory_write(SHARED_MEM_TX_CMD_BANK_CURRENT, req_bank);
- sram_bulk_write_start(req_addr);
- }
- ret_len = USB_MAX_TRANS;
- /*
- * -------------------------------------------------------------------------
- */
- } else if (rq->bRequest == USB_BULK_UPLOAD_END) {
- if (req_state != REQ_STATUS_BULK_UPLOAD) {
- debug(DEBUG_USB,
- "USB_BULK_UPLOAD_END: ERROR state is not REQ_STATUS_BULK_UPLOAD\n");
- return 0;
- }
- debug(DEBUG_USB, "USB_BULK_UPLOAD_END:\n");
- req_state = REQ_STATUS_IDLE;
- sram_bulk_write_end();
- shared_memory_write(SHARED_MEM_TX_CMD_UPLOAD_END, 0);
- ret_len = 0;
- /*
- * -------------------------------------------------------------------------
- */
- } else if (rq->bRequest == USB_CRC) {
- req_addr = rq->wValue.word;
- req_addr = req_addr << 16;
- req_addr = req_addr | rq->wIndex.word;
- debug(DEBUG_USB, "USB_CRC: addr=0x%08lx \n", req_addr);
- crc_check_bulk_memory(0x000000, req_addr, req_bank_size);
- ret_len = 0;
- /*
- * -------------------------------------------------------------------------
- */
- } else if (rq->bRequest == USB_MODE_SNES) {
- req_state = REQ_STATUS_SNES;
- debug(DEBUG_USB, "USB_MODE_SNES:\n");
- ret_len = 0;
- /*
- * -------------------------------------------------------------------------
- */
- } else if (rq->bRequest == USB_MODE_AVR) {
- req_state = REQ_STATUS_AVR;
- debug(DEBUG_USB, "USB_MODE_AVR:\n");
- ret_len = 0;
- /*
- * -------------------------------------------------------------------------
- */
- } else if (rq->bRequest == USB_AVR_RESET) {
- debug(DEBUG_USB, "USB_AVR_RESET:\n");
- soft_reset();
- ret_len = 0;
- /*
- * -------------------------------------------------------------------------
- */
- } else if (rq->bRequest == USB_CRC_ADDR) {
- req_state = REQ_STATUS_CRC;
- req_addr = rq->wValue.word;
- req_addr = req_addr << 16;
- req_addr = req_addr | rq->wIndex.word;
- debug(DEBUG_USB, "USB_CRC_ADDR: addr=0x%lx size=%i\n", req_addr,
- rq->wLength.word);
- req_size = rq->wLength.word;
- req_size = req_size << 2;
- tx_remaining = 2;
- debug(DEBUG_USB, "USB_CRC_ADDR: addr=0x%lx size=%li\n", req_addr,
- req_size);
- crc = crc_check_memory_range(req_addr, req_size, read_buffer);
- tx_buffer[0] = crc & 0xff;
- tx_buffer[1] = (crc >> 8) & 0xff;
- ret_len = 2;
- req_state = REQ_STATUS_IDLE;
- }
- usbMsgPtr = data_buffer;
- return ret_len; /* default for not implemented requests: return no data back to host */
- }
- /*
- * -------------------------------------------------------------------------
- */
- void usb_connect()
- {
- uint8_t i = 0;
- info("USB init\n");
- usbDeviceDisconnect(); /* enforce re-enumeration, do this while */
- cli();
- info("USB disconnect\n");
- i = 10;
- while (--i) { /* fake USB disconnect for > 250 ms */
- led_on();
- _delay_ms(35);
- led_off();
- _delay_ms(65);
- }
- led_on();
- usbDeviceConnect();
- info("USB connect\n");
- }
- void boot_startup_rom()
- {
- info("Activate AVR bus\n");
- avr_bus_active();
- info("IRQ off\n");
- snes_irq_lo();
- snes_irq_off();
- snes_lorom();
- info("Set Snes lowrom \n");
- rle_decode(&_rom, ROM_BUFFER_SIZE, 0x000000);
- dump_memory(0x10000 - 0x100, 0x10000);
- snes_reset_hi();
- snes_reset_off();
- snes_irq_lo();
- snes_irq_off();
- info("IRQ off\n");
- snes_hirom();
- snes_wr_disable();
- info("Disable snes WR\n");
- snes_bus_active();
- info("Activate Snes bus\n");
- _delay_ms(100);
- info("Reset Snes\n");
- send_reset();
- _delay_ms(100);
- #if 0
- uint8_t i = 0;
- i = 20;
- info("Wait");
- while (--i) {
- _delay_ms(500);
- info(".");
- }
- info("\n");
- #endif
- }
- int main(void)
- {
- uart_init();
- stdout = &uart_stdout;
- info("Sytem start\n");
- system_init();
- #if 0
- test_read_write();
- test_bulk_read_write();
- test_crc();
- while (1);
- #endif
- info("Boot startup rom\n");
- boot_startup_rom();
- usbInit();
- usb_connect();
- while (1) {
- avr_bus_active();
- info("Activate AVR bus\n");
- info("IRQ off\n");
- snes_irq_lo();
- snes_irq_off();
- info("Set Snes lowrom\n");
- snes_lorom();
- info("Disable snes WR\n");
- snes_wr_disable();
- sei();
- info("USB poll\n");
- while (req_state != REQ_STATUS_SNES) {
- usbPoll();
- }
- shared_memory_write(SHARED_MEM_TX_CMD_TERMINATE, 0);
- info("USB poll done\n");
- snes_reset_hi();
- snes_reset_off();
- snes_irq_lo();
- snes_irq_off();
- info("IRQ off\n");
- set_rom_mode();
- snes_wr_disable();
- info("Disable snes WR\n");
- snes_bus_active();
- info("Activate Snes bus\n");
- _delay_ms(100);
- info("Reset Snes\n");
- send_reset();
- info("Poll\n");
- while (req_state != REQ_STATUS_AVR) {
- usbPoll();
- #ifdef DO_IRQ
- uint8_t i;
- uint16_t irq_count = 0;
- i = 10;
- while (--i) {
- _delay_ms(100);
- }
- info("Send IRQ %i\n", ++irq_count);
- send_irq();
- #endif
- #ifdef DO_BUS_STEALING
- avr_bus_active();
- sram_bulk_read_start(0x003000);
- c = sram_bulk_read();
- i = 5;
- while (--i) {
- _delay_ms(500);
- info("Wait to switch to snes mode %i\n", i);
- }
- if (req_bank_size == 0x8000) {
- snes_lorom();
- info("Set Snes lowrom \n");
- } else {
- snes_hirom();
- info("Set Snes hirom \n");
- }
- snes_wr_disable();
- info("Disable snes WR\n");
- snes_bus_active();
- info("Activate Snes bus\n");
- info("Read 0x3000=%c\n", c);
- #endif
- }
- }
- return 0;
- }
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