mirror of https://github.com/parasyte/alt64
181 lines
3.6 KiB
C
181 lines
3.6 KiB
C
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#include "everdrive.h"
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#include "sys.h"
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#include "types.h"
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#include <libdragon.h>
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#include "rom.h"
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u8 cmdTest();
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u8 cmdFill();
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u8 cmdReadRom();
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u8 cmdWriteRom();
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u64 usb_buff[128];
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u8 *usb_buff8; // = (u8 *) usb_buff;
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#define PI_BSD_DOM1_LAT_REG (PI_BASE_REG+0x14)
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/* PI dom1 pulse width (R/W): [7:0] domain 1 device R/W strobe pulse width */
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#define PI_BSD_DOM1_PWD_REG (PI_BASE_REG+0x18)
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/* PI dom1 page size (R/W): [3:0] domain 1 device page size */
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#define PI_BSD_DOM1_PGS_REG (PI_BASE_REG+0x1C) /* page size */
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/* PI dom1 release (R/W): [1:0] domain 1 device R/W release duration */
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#define PI_BSD_DOM1_RLS_REG (PI_BASE_REG+0x20)
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/* PI dom2 latency (R/W): [7:0] domain 2 device latency */
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#define PI_BSD_DOM2_LAT_REG (PI_BASE_REG+0x24) /* Domain 2 latency */
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/* PI dom2 pulse width (R/W): [7:0] domain 2 device R/W strobe pulse width */
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#define PI_BSD_DOM2_PWD_REG (PI_BASE_REG+0x28) /* pulse width */
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/* PI dom2 page size (R/W): [3:0] domain 2 device page size */
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#define PI_BSD_DOM2_PGS_REG (PI_BASE_REG+0x2C) /* page size */
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/* PI dom2 release (R/W): [1:0] domain 2 device R/W release duration */
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#define PI_BSD_DOM2_RLS_REG (PI_BASE_REG+0x30) /* release duration */
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#define PHYS_TO_K1(x) ((u32)(x)|0xA0000000) /* physical to kseg1 */
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#define IO_WRITE(addr,data) (*(volatile u32*)PHYS_TO_K1(addr)=(u32)(data))
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#define PI_BASE_REG 0x04600000
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extern u8 system_cic;
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u8 usbListener() {
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volatile u16 resp;
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volatile u8 cmd;
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usb_buff8 = (u8 *) usb_buff;
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if (evd_fifoRxf())return 0;
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resp = evd_fifoRd(usb_buff, 1);
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if (resp != 0) return 1;
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if (usb_buff8[0] != 'C' || usb_buff8[1] != 'M' || usb_buff8[2] != 'D')return 2;
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cmd = usb_buff8[3];
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switch (cmd) {
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case 'R':
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resp = cmdReadRom();
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if (resp)return 10;
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break;
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case 'W':
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resp = cmdWriteRom();
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if (resp)return 11;
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break;
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case 'T':
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resp = cmdTest();
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if (resp)return 12;
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break;
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case 'F':
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resp = cmdFill();
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if (resp)return 13;
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break;
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case 'S':
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//IO_WRITE(PI_BSD_DOM1_PGS_REG, 0x0c);
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//IO_WRITE(PI_BSD_DOM1_PGS_REG, 0x80);
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//evdSetESaveType(SAVE_TYPE_EEP16k);
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system_cic = CIC_6102;
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evd_lockRegs();
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IO_WRITE(PI_STATUS_REG, 3);
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sleep(2);
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pif_boot();
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break;
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}
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return 0;
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}
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u8 cmdTest() {
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u16 resp;
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usb_buff8[3] = 'k';
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resp = evd_fifoWr(usb_buff, 1);
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if (resp)return 1;
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return 0;
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}
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u8 cmdFill() {
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u16 resp;
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u32 i;
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//console_printf("fill...\n");
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for (i = 0; i < 512; i++) {
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usb_buff8[i] = 0;
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}
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//console_printf("buff prepared\n");
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romFill(0, 0x200000, 0);
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//console_printf("fill done\n");
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usb_buff8[3] = 'k';
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resp = evd_fifoWr(usb_buff, 1);
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if (resp)return 1;
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//console_printf("resp sent ok\n");
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return 0;
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}
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u8 cmdReadRom() {
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u16 resp;
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u16 ptr;
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u16 len;
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u32 addr;
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ptr = 4;
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addr = usb_buff8[ptr++];
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addr <<= 8;
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addr |= usb_buff8[ptr++];
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addr *= 2048;
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len = usb_buff8[ptr++];
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len <<= 8;
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len |= usb_buff8[ptr++];
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resp = evd_fifoWrFromCart(addr, len);
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if (resp)return 1;
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return 0;
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}
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u8 cmdWriteRom() {
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u16 resp;
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u16 ptr;
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u16 len;
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u32 addr;
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ptr = 4;
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addr = usb_buff8[ptr++];
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addr <<= 8;
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addr |= usb_buff8[ptr++];
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addr *= 2048;
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len = usb_buff8[ptr++];
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len <<= 8;
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len |= usb_buff8[ptr++];
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resp = evd_fifoRdToCart(addr, len);
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if (resp)return 1;
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return 0;
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}
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