480 lines
14 KiB
C
480 lines
14 KiB
C
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* Copyright (c) 2014-2015, Normmatt
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*
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* Alternatively, the contents of this file may be used under the terms
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* of the GNU General Public License Version 2, as described below:
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*
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* This file is free software: you may copy, redistribute and/or modify
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* it under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 2 of the License, or (at your
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* option) any later version.
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*
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* This file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see http://www.gnu.org/licenses/.
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*/
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#include "sdmmc.h"
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#include "delay.h"
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static struct mmcdevice handleNAND;
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static struct mmcdevice handleSD;
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static inline u16 sdmmc_read16(u16 reg)
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{
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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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{
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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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{
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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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{
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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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{
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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 int geterror(struct mmcdevice *ctx)
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{
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return (int)((ctx->error << 29) >> 31);
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}
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static void 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) sdmmc_mask16(REG_SDOPT, 0, 0x8000);
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else sdmmc_mask16(REG_SDOPT, 0x8000, 0);
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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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u32 getSDRESP = (cmd << 15) >> 31;
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u16 flags = (cmd << 15) >> 31;
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const int readdata = cmd & 0x20000;
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const int 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_DATACTL32, 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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u8 *rDataPtr = ctx->rData;
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const u8 *tDataPtr = ctx->tData;
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bool rUseBuf = rDataPtr != NULL;
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bool tUseBuf = tDataPtr != NULL;
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u16 status0 = 0;
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while(true)
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{
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vu16 status1 = sdmmc_read16(REG_SDSTATUS1);
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vu16 ctl32 = sdmmc_read16(REG_DATACTL32);
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if((ctl32 & 0x100))
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{
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if(readdata)
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{
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if(rUseBuf)
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{
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sdmmc_mask16(REG_SDSTATUS1, TMIO_STAT1_RXRDY, 0);
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if(size > 0x1FF)
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{
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//Gabriel Marcano: This implementation doesn't assume alignment.
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//I've removed the alignment check doen with former rUseBuf32 as a result
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for(int i = 0; i < 0x200; i += 4)
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{
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u32 data = sdmmc_read32(REG_SDFIFO32);
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*rDataPtr++ = data;
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*rDataPtr++ = data >> 8;
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*rDataPtr++ = data >> 16;
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*rDataPtr++ = data >> 24;
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}
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size -= 0x200;
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}
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}
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sdmmc_mask16(REG_DATACTL32, 0x800, 0);
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}
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}
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if(!(ctl32 & 0x200))
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{
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if(writedata)
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{
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if(tUseBuf)
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{
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sdmmc_mask16(REG_SDSTATUS1, TMIO_STAT1_TXRQ, 0);
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if(size > 0x1FF)
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{
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for(int i = 0; i < 0x200; i += 4)
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{
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u32 data = *tDataPtr++;
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data |= (u32)*tDataPtr++ << 8;
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data |= (u32)*tDataPtr++ << 16;
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data |= (u32)*tDataPtr++ << 24;
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sdmmc_write32(REG_SDFIFO32, data);
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}
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size -= 0x200;
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}
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}
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sdmmc_mask16(REG_DATACTL32, 0x1000, 0);
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}
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}
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if(status1 & TMIO_MASK_GW)
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{
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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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{
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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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{
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ctx->error |= 0x1;
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}
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if(status0 & TMIO_STAT0_DATAEND)
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{
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ctx->error |= 0x2;
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}
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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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{
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ctx->ret[0] = (u32)(sdmmc_read16(REG_SDRESP0) | (sdmmc_read16(REG_SDRESP1) << 16));
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ctx->ret[1] = (u32)(sdmmc_read16(REG_SDRESP2) | (sdmmc_read16(REG_SDRESP3) << 16));
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ctx->ret[2] = (u32)(sdmmc_read16(REG_SDRESP4) | (sdmmc_read16(REG_SDRESP5) << 16));
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ctx->ret[3] = (u32)(sdmmc_read16(REG_SDRESP6) | (sdmmc_read16(REG_SDRESP7) << 16));
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}
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}
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int __attribute__ ((noinline)) sdmmc_sdcard_writesectors(u32 sector_no, u32 numsectors, const u8 *in)
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{
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if(handleSD.isSDHC == 0) 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_SDBLKCOUNT32, numsectors);
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sdmmc_write16(REG_SDBLKLEN32, 0x200);
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sdmmc_write16(REG_SDBLKCOUNT, numsectors);
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handleSD.tData = 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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int __attribute__ ((noinline)) sdmmc_sdcard_readsectors(u32 sector_no, u32 numsectors, u8 *out)
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{
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if(handleSD.isSDHC == 0) 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_SDBLKCOUNT32, numsectors);
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sdmmc_write16(REG_SDBLKLEN32, 0x200);
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sdmmc_write16(REG_SDBLKCOUNT, numsectors);
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handleSD.rData = 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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int __attribute__ ((noinline)) sdmmc_nand_readsectors(u32 sector_no, u32 numsectors, u8 *out)
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{
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if(handleNAND.isSDHC == 0) 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_SDBLKCOUNT32, numsectors);
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sdmmc_write16(REG_SDBLKLEN32, 0x200);
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sdmmc_write16(REG_SDBLKCOUNT, numsectors);
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handleNAND.rData = 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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/*
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int __attribute__ ((noinline)) sdmmc_nand_writesectors(u32 sector_no, u32 numsectors, const u8 *in) //experimental
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{
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if(handleNAND.isSDHC == 0) 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_SDBLKCOUNT32, numsectors);
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sdmmc_write16(REG_SDBLKLEN32, 0x200);
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sdmmc_write16(REG_SDBLKCOUNT, numsectors);
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handleNAND.tData = 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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*/
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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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{
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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) | ((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 FIXME perhaps return some error?
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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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*(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 &= 0xFFFFu; //SDDATACTL32
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*(vu16 *)0x100060D8 &= 0xFFDFu; //SDDATACTL
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*(vu16 *)0x10006104 = 512; //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 = 0x20;
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*(vu16 *)0x10006028 = 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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}
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static int Nand_Init()
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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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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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{
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do
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{
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sdmmc_send_command(&handleNAND, 0x10701, 0x100000);
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}
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while(!(handleNAND.error & 1));
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}
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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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//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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inittarget(&handleSD);
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waitcycles(1u << 22); //Card needs a little bit of time to be detected, it seems FIXME test again to see what a good number is for the delay
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//If not inserted
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if(!(*((vu16 *)(SDMMC_BASE + REG_SDSTATUS0)) & TMIO_STAT0_SIGSTATE)) return 5;
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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.error & 0x1) << 0x1E;
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u32 temp2 = 0;
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do
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{
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do
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{
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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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}
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while(!(handleSD.error & 1));
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}
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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 -2;
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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 -3;
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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 -4;
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sdmmc_send_command(&handleSD, 0x10437, handleSD.initarg << 0x10);
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if((handleSD.error & 0x4)) return -5;
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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 -6;
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sdmmc_send_command(&handleSD, 0x1040D, handleSD.initarg << 0x10);
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if((handleSD.error & 0x4)) return -7;
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sdmmc_send_command(&handleSD, 0x10410, 0x200);
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if((handleSD.error & 0x4)) return -8;
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handleSD.clk |= 0x200;
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return 0;
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}
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void sdmmc_get_cid(bool isNand, u32 *info)
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{
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struct mmcdevice *device = isNand ? &handleNAND : &handleSD;
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inittarget(device);
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// use cmd7 to put sd card in standby mode
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// CMD7
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sdmmc_send_command(device, 0x10507, 0);
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// get sd card info
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// use cmd10 to read CID
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sdmmc_send_command(device, 0x1060A, device->initarg << 0x10);
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for(int i = 0; i < 4; ++i)
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info[i] = device->ret[i];
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|
|
|
// put sd card back to transfer mode
|
|
// CMD7
|
|
sdmmc_send_command(device, 0x10507, device->initarg << 0x10);
|
|
}
|
|
|
|
void sdmmc_sdcard_init()
|
|
{
|
|
InitSD();
|
|
Nand_Init();
|
|
SD_Init();
|
|
} |