407 lines
12 KiB
C
407 lines
12 KiB
C
// Copyright 2014 Normmatt
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "common.h"
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#include "sdmmc.h"
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#include "delay.h"
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struct mmcdevice handleNAND;
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struct mmcdevice handleSD;
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static inline u16 sdmmc_read16(u16 reg) {
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return *(vu16*)(SDMMC_BASE + reg);
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}
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static inline void sdmmc_write16(u16 reg, u16 val) {
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*(vu16*)(SDMMC_BASE + reg) = val;
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}
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static inline u32 sdmmc_read32(u16 reg) {
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return *(vu32*)(SDMMC_BASE + reg);
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}
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static inline void sdmmc_write32(u16 reg, u32 val) {
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*(vu32*)(SDMMC_BASE + reg) = val;
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}
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static inline void sdmmc_mask16(u16 reg, const u16 clear, const u16 set) {
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u16 val = sdmmc_read16(reg);
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val &= ~clear;
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val |= set;
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sdmmc_write16(reg, val);
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}
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static inline void setckl(u32 data)
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{
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sdmmc_mask16(REG_SDCLKCTL, 0x100, 0);
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sdmmc_mask16(REG_SDCLKCTL, 0x2FF, data & 0x2FF);
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sdmmc_mask16(REG_SDCLKCTL, 0x0, 0x100);
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}
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mmcdevice *getMMCDevice(int drive)
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{
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if(drive==0) return &handleNAND;
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return &handleSD;
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}
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static u32 __attribute__((noinline)) geterror(struct mmcdevice *ctx)
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{
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return (ctx->error << 29) >> 31;
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}
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static void __attribute__((noinline)) inittarget(struct mmcdevice *ctx)
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{
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sdmmc_mask16(REG_SDPORTSEL,0x3,(u16)ctx->devicenumber);
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setckl(ctx->clk);
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if (ctx->SDOPT == 0) {
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sdmmc_mask16(REG_SDOPT, 0, 0x8000);
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} else {
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sdmmc_mask16(REG_SDOPT, 0x8000, 0);
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}
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}
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static void __attribute__((noinline)) sdmmc_send_command(struct mmcdevice *ctx, u32 cmd, u32 args)
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{
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bool getSDRESP = (cmd << 15) >> 31;
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u16 flags = (cmd << 15) >> 31;
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const bool readdata = cmd & 0x20000;
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const bool writedata = cmd & 0x40000;
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if (readdata || writedata)
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flags |= TMIO_STAT0_DATAEND;
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ctx->error = 0;
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while (sdmmc_read16(REG_SDSTATUS1) & TMIO_STAT1_CMD_BUSY); //mmc working?
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sdmmc_write16(REG_SDIRMASK0,0);
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sdmmc_write16(REG_SDIRMASK1,0);
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sdmmc_write16(REG_SDSTATUS0,0);
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sdmmc_write16(REG_SDSTATUS1,0);
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sdmmc_mask16(REG_SDDATACTL32,0x1800,0);
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sdmmc_write16(REG_SDCMDARG0,args &0xFFFF);
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sdmmc_write16(REG_SDCMDARG1,args >> 16);
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sdmmc_write16(REG_SDCMD,cmd &0xFFFF);
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u32 size = ctx->size;
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vu8 *dataPtr = ctx->data;
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bool useBuf = ( NULL != dataPtr );
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u16 status0 = 0;
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while(true) {
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u16 status1 = sdmmc_read16(REG_SDSTATUS1);
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if (status1 & TMIO_STAT1_RXRDY) {
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if (readdata && useBuf) {
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sdmmc_mask16(REG_SDSTATUS1, TMIO_STAT1_RXRDY, 0);
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//sdmmc_write16(REG_SDSTATUS1,~TMIO_STAT1_RXRDY);
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if (size > 0x1FF) {
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for(int i = 0; i<0x200; i+=2) {
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u16 data = sdmmc_read16(REG_SDFIFO);
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*dataPtr++ = data & 0xFF;
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*dataPtr++ = data >> 8;
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}
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size -= 0x200;
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}
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}
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}
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if (status1 & TMIO_STAT1_TXRQ) {
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if (writedata && useBuf) {
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sdmmc_mask16(REG_SDSTATUS1, TMIO_STAT1_TXRQ, 0);
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//sdmmc_write16(REG_SDSTATUS1,~TMIO_STAT1_TXRQ);
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if (size > 0x1FF) {
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for (int i = 0; i<0x200; i+=2) {
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u16 data = *dataPtr++;
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data |= *dataPtr++ << 8;
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sdmmc_write16(REG_SDFIFO, data);
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}
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size -= 0x200;
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}
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}
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}
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if (status1 & TMIO_MASK_GW) {
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ctx->error |= 4;
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break;
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}
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if (!(status1 & TMIO_STAT1_CMD_BUSY)) {
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status0 = sdmmc_read16(REG_SDSTATUS0);
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if (sdmmc_read16(REG_SDSTATUS0) & TMIO_STAT0_CMDRESPEND)
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ctx->error |= 0x1;
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if (status0 & TMIO_STAT0_DATAEND)
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ctx->error |= 0x2;
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if ((status0 & flags) == flags)
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break;
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}
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}
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ctx->stat0 = sdmmc_read16(REG_SDSTATUS0);
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ctx->stat1 = sdmmc_read16(REG_SDSTATUS1);
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sdmmc_write16(REG_SDSTATUS0,0);
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sdmmc_write16(REG_SDSTATUS1,0);
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if (getSDRESP != 0) {
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ctx->ret[0] = (u32)sdmmc_read16(REG_SDRESP0) | (u32)(sdmmc_read16(REG_SDRESP1) << 16);
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ctx->ret[1] = (u32)sdmmc_read16(REG_SDRESP2) | (u32)(sdmmc_read16(REG_SDRESP3) << 16);
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ctx->ret[2] = (u32)sdmmc_read16(REG_SDRESP4) | (u32)(sdmmc_read16(REG_SDRESP5) << 16);
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ctx->ret[3] = (u32)sdmmc_read16(REG_SDRESP6) | (u32)(sdmmc_read16(REG_SDRESP7) << 16);
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}
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}
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u32 __attribute__((noinline)) sdmmc_sdcard_writesectors(u32 sector_no, u32 numsectors, vu8 *in)
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{
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if (handleSD.isSDHC == 0)
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sector_no <<= 9;
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inittarget(&handleSD);
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sdmmc_write16(REG_SDSTOP,0x100);
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sdmmc_write16(REG_SDBLKCOUNT,numsectors);
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handleSD.data = in;
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handleSD.size = numsectors << 9;
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sdmmc_send_command(&handleSD,0x52C19,sector_no);
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return geterror(&handleSD);
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}
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u32 __attribute__((noinline)) sdmmc_sdcard_readsectors(u32 sector_no, u32 numsectors, vu8 *out)
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{
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if (handleSD.isSDHC == 0)
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sector_no <<= 9;
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inittarget(&handleSD);
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sdmmc_write16(REG_SDSTOP,0x100);
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sdmmc_write16(REG_SDBLKCOUNT,numsectors);
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handleSD.data = out;
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handleSD.size = numsectors << 9;
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sdmmc_send_command(&handleSD,0x33C12,sector_no);
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return geterror(&handleSD);
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}
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u32 __attribute__((noinline)) sdmmc_nand_readsectors(u32 sector_no, u32 numsectors, vu8 *out)
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{
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if (handleNAND.isSDHC == 0)
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sector_no <<= 9;
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inittarget(&handleNAND);
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sdmmc_write16(REG_SDSTOP,0x100);
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sdmmc_write16(REG_SDBLKCOUNT,numsectors);
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handleNAND.data = out;
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handleNAND.size = numsectors << 9;
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sdmmc_send_command(&handleNAND,0x33C12,sector_no);
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inittarget(&handleSD);
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return geterror(&handleNAND);
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}
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u32 __attribute__((noinline)) sdmmc_nand_writesectors(u32 sector_no, u32 numsectors, vu8 *in) //experimental
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{
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if (handleNAND.isSDHC == 0)
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sector_no <<= 9;
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inittarget(&handleNAND);
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sdmmc_write16(REG_SDSTOP,0x100);
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sdmmc_write16(REG_SDBLKCOUNT,numsectors);
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handleNAND.data = in;
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handleNAND.size = numsectors << 9;
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sdmmc_send_command(&handleNAND,0x52C19,sector_no);
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inittarget(&handleSD);
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return geterror(&handleNAND);
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}
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static u32 calcSDSize(u8* csd, int type)
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{
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u32 result = 0;
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if (type == -1) type = csd[14] >> 6;
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switch (type) {
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case 0:
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{
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u32 block_len = csd[9] & 0xf;
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block_len = 1u << block_len;
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u32 mult = (u32)(csd[4] >> 7) | (u32)((csd[5] & 3) << 1);
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mult = 1u << (mult + 2);
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result = csd[8] & 3;
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result = (result << 8) | csd[7];
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result = (result << 2) | (csd[6] >> 6);
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result = (result + 1) * mult * block_len / 512;
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}
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break;
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case 1:
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result = csd[7] & 0x3f;
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result = (result << 8) | csd[6];
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result = (result << 8) | csd[5];
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result = (result + 1) * 1024;
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break;
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default:
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break; //Do nothing otherwise
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}
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return result;
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}
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static void InitSD()
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{
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//NAND
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handleNAND.isSDHC = 0;
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handleNAND.SDOPT = 0;
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handleNAND.res = 0;
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handleNAND.initarg = 1;
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handleNAND.clk = 0x80;
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handleNAND.devicenumber = 1;
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//SD
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handleSD.isSDHC = 0;
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handleSD.SDOPT = 0;
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handleSD.res = 0;
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handleSD.initarg = 0;
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handleSD.clk = 0x80;
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handleSD.devicenumber = 0;
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*(vu16*)0x10006100 &= 0xF7FFu; //SDDATACTL32
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*(vu16*)0x10006100 &= 0xEFFFu; //SDDATACTL32
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*(vu16*)0x10006100 |= 0x402u; //SDDATACTL32
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*(vu16*)0x100060D8 = (*(vu16*)0x100060D8 & 0xFFDD) | 2;
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*(vu16*)0x10006100 &= 0xFFFDu; //SDDATACTL32
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*(vu16*)0x100060D8 &= 0xFFDDu; //SDDATACTL
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*(vu16*)0x10006104 = 0; //SDBLKLEN32
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*(vu16*)0x10006108 = 1; //SDBLKCOUNT32
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*(vu16*)0x100060E0 &= 0xFFFEu; //SDRESET
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*(vu16*)0x100060E0 |= 1u; //SDRESET
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*(vu16*)0x10006020 |= TMIO_MASK_ALL; //SDIR_MASK0
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*(vu16*)0x10006022 |= TMIO_MASK_ALL>>16; //SDIR_MASK1
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*(vu16*)0x100060FC |= 0xDBu; //SDCTL_RESERVED7
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*(vu16*)0x100060FE |= 0xDBu; //SDCTL_RESERVED8
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*(vu16*)0x10006002 &= 0xFFFCu; //SDPORTSEL
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*(vu16*)0x10006024 = 0x40; //Nintendo sets this to 0x20
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*(vu16*)0x10006028 = 0x40EB; //Nintendo sets this to 0x40EE
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*(vu16*)0x10006002 &= 0xFFFCu; ////SDPORTSEL
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*(vu16*)0x10006026 = 512; //SDBLKLEN
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*(vu16*)0x10006008 = 0; //SDSTOP
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inittarget(&handleSD);
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}
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static int Nand_Init()
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{
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inittarget(&handleNAND);
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waitcycles(0xF000);
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sdmmc_send_command(&handleNAND,0,0);
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do {
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do {
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sdmmc_send_command(&handleNAND,0x10701,0x100000);
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} while ( !(handleNAND.error & 1) );
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} while((handleNAND.ret[0] & 0x80000000) == 0);
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sdmmc_send_command(&handleNAND,0x10602,0x0);
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if (handleNAND.error & 0x4) return -1;
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sdmmc_send_command(&handleNAND,0x10403,handleNAND.initarg << 0x10);
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if (handleNAND.error & 0x4) return -1;
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sdmmc_send_command(&handleNAND,0x10609,handleNAND.initarg << 0x10);
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if (handleNAND.error & 0x4) return -1;
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handleNAND.total_size = calcSDSize((u8*)&handleNAND.ret[0],0);
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handleNAND.clk = 1;
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setckl(1);
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sdmmc_send_command(&handleNAND,0x10407,handleNAND.initarg << 0x10);
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if (handleNAND.error & 0x4) return -1;
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handleNAND.SDOPT = 1;
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sdmmc_send_command(&handleNAND,0x10506,0x3B70100);
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if (handleNAND.error & 0x4) return -1;
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sdmmc_send_command(&handleNAND,0x10506,0x3B90100);
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if (handleNAND.error & 0x4) return -1;
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sdmmc_send_command(&handleNAND,0x1040D,handleNAND.initarg << 0x10);
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if (handleNAND.error & 0x4) return -1;
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sdmmc_send_command(&handleNAND,0x10410,0x200);
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if (handleNAND.error & 0x4) return -1;
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handleNAND.clk |= 0x200;
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inittarget(&handleSD);
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return 0;
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}
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static int SD_Init()
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{
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inittarget(&handleSD);
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waitcycles(1u << 18); //Card needs a little bit of time to be detected, it seems
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//If not inserted
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if (!(*((vu16*)0x1000601c) & TMIO_STAT0_SIGSTATE)) return -1;
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sdmmc_send_command(&handleSD,0,0);
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sdmmc_send_command(&handleSD,0x10408,0x1AA);
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//u32 temp = (handleSD.ret[0] == 0x1AA) << 0x1E;
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u32 temp = (handleSD.error & 0x1) << 0x1E;
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//int count = 0;
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u32 temp2 = 0;
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do {
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do {
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sdmmc_send_command(&handleSD,0x10437,handleSD.initarg << 0x10);
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sdmmc_send_command(&handleSD,0x10769,0x00FF8000 | temp);
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temp2 = 1;
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} while ( !(handleSD.error & 1) );
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} while((handleSD.ret[0] & 0x80000000) == 0);
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if(!((handleSD.ret[0] >> 30) & 1) || !temp)
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temp2 = 0;
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handleSD.isSDHC = temp2;
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sdmmc_send_command(&handleSD,0x10602,0);
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if (handleSD.error & 0x4) return -1;
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sdmmc_send_command(&handleSD,0x10403,0);
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if (handleSD.error & 0x4) return -1;
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handleSD.initarg = handleSD.ret[0] >> 0x10;
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sdmmc_send_command(&handleSD,0x10609,handleSD.initarg << 0x10);
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if (handleSD.error & 0x4) return -1;
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handleSD.total_size = calcSDSize((u8*)&handleSD.ret[0],-1);
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handleSD.clk = 1;
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setckl(1);
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sdmmc_send_command(&handleSD,0x10507,handleSD.initarg << 0x10);
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if (handleSD.error & 0x4) return -1;
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sdmmc_send_command(&handleSD,0x10437,handleSD.initarg << 0x10);
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if (handleSD.error & 0x4) return -1;
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handleSD.SDOPT = 1;
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sdmmc_send_command(&handleSD,0x10446,0x2);
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if (handleSD.error & 0x4) return -1;
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sdmmc_send_command(&handleSD,0x1040D,handleSD.initarg << 0x10);
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if (handleSD.error & 0x4) return -1;
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sdmmc_send_command(&handleSD,0x10410,0x200);
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if (handleSD.error & 0x4) return -1;
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handleSD.clk |= 0x200;
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return 0;
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}
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int sdmmc_sdcard_init()
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{
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InitSD();
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int result = Nand_Init();
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return result | SD_Init();
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}
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