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#include "orsocdef.h"
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#include "board.h"
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#include "sd_controller.h"
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#define SD_REG(REG) REG32(SD_CONTROLLER_BASE+REG)
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int sd_get_rca(sd_card *d)
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{
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uint32 rtn_reg=0;
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SD_REG(SD_COMMAND) = CMD3 | CICE | CRCE | RSP_48;
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SD_REG(SD_ARG)=0;
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if (sd_wait_rsp() == 0)
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return 0;
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else{
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rtn_reg = SD_REG(SD_NORMAL_INT_STATUS);
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if ( (rtn_reg & EI) == EI) //Error in response, init failed return.
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return 0;
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rtn_reg = SD_REG(SD_RESP1);
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d->rca=((rtn_reg&RCA_RCA_MASK)>>16);
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uart_print_str("rca fine");
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}
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return 1;
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}
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//return 0 if no response else return 1.
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uint8 sd_wait_rsp()
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{
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volatile unsigned long r1, r2;
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//Polling for timeout and command complete
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while (1 )
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{
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r1= SD_REG(SD_ERROR_INT_STATUS);
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r2= SD_REG(SD_NORMAL_INT_STATUS) ;
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if (( r1 & CMD_TIMEOUT ) == CMD_TIMEOUT)
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return 0;
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else if ((r2 & CMD_COMPLETE ) == CMD_COMPLETE)
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return 1;
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}
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//Later Exception restart module
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return 0;
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}
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int sd_cmd_free() //Return 1 if CMD is busy
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{
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unsigned int a= SD_REG(SD_STATUS);
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return (a & 1);
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}
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sd_card sd_controller_init ()
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{
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sd_card dev;
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volatile unsigned long rtn_reg=0;
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volatile unsigned long rtn_reg1=0;
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REG32(SD_CONTROLLER_BASE+SD_TIMEOUT)=0x00008FF;
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REG32(SD_CONTROLLER_BASE+SD_SOFTWARE_RST)=0x0000001;
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REG32(SD_CONTROLLER_BASE+SD_CLOCK_D)=0x0000002;
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REG32(SD_CONTROLLER_BASE+SD_SOFTWARE_RST)=0x0000000;
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REG32(SD_CONTROLLER_BASE+SD_ARG) =0x0000;
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REG32(SD_CONTROLLER_BASE+SD_COMMAND) =0x0000;
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sd_wait_rsp();
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SD_REG(SD_COMMAND) = ( CMD8 | CICE | CRCE | RSP_48);
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SD_REG(SD_ARG) = VHS|CHECK_PATTERN;
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dev.phys_spec_2_0 = sd_wait_rsp();
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REG32(SD_CONTROLLER_BASE+SD_ARG) =0x0000;
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REG32(SD_CONTROLLER_BASE+SD_COMMAND) =0x0000;
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sd_wait_rsp();
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if (dev.phys_spec_2_0)
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{
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// uart_print_str("2_0 CARD /n");
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return dev;
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}
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else
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{
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REG32(SD_CONTROLLER_BASE+SD_ARG) =0x0000;
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REG32(SD_CONTROLLER_BASE+SD_COMMAND) =0x0000;
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while (REG32(SD_CONTROLLER_BASE+SD_STATUS)& 1) {}
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rtn_reg=0;
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while ((rtn_reg & BUSY) != BUSY)
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{
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REG32(SD_CONTROLLER_BASE+SD_COMMAND) = CMD55|RSP_48;
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REG32(SD_CONTROLLER_BASE+SD_ARG) =0;
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if (!sd_wait_rsp())
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return dev;
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REG32(SD_CONTROLLER_BASE+SD_COMMAND) =ACMD41 | RSP_48;
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REG32(SD_CONTROLLER_BASE+SD_ARG) =0;
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if (!sd_wait_rsp())
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return dev;
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rtn_reg= REG32(SD_CONTROLLER_BASE+SD_RESP1) ;
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}
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dev.Voltage_window=rtn_reg&VOLTAGE_MASK;
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dev.HCS_s = 0;
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}
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//GET CID
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REG32(SD_CONTROLLER_BASE+SD_COMMAND) =CMD2 | RSP_146;
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REG32(SD_CONTROLLER_BASE+SD_ARG) =0;
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if (!sd_wait_rsp())
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return dev;
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//Get RCA
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SD_REG(SD_COMMAND) = CMD3 | CICE | CRCE | RSP_48;
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SD_REG(SD_ARG)=0;
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if (!sd_wait_rsp())
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return dev;
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rtn_reg = SD_REG(SD_RESP1);
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dev.rca = ((rtn_reg&RCA_RCA_MASK));
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dev.Active=1;
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return dev;
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}
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