diff options
Diffstat (limited to 'firmware/target/arm/as3525/sd-as3525v2.c')
| -rw-r--r-- | firmware/target/arm/as3525/sd-as3525v2.c | 139 |
1 files changed, 47 insertions, 92 deletions
diff --git a/firmware/target/arm/as3525/sd-as3525v2.c b/firmware/target/arm/as3525/sd-as3525v2.c index 862cf3ca13..72a3631bb7 100644 --- a/firmware/target/arm/as3525/sd-as3525v2.c +++ b/firmware/target/arm/as3525/sd-as3525v2.c @@ -43,6 +43,7 @@ #include <stdarg.h> #include "sysfont.h" +/* debug helper */ static int line = 0; static void printf(const char *format, ...) { @@ -61,85 +62,18 @@ static void printf(const char *format, ...) } /* command flags */ -#define MCI_NO_RESP (0<<0) +#define MCI_NO_RESP (0<<0) #define MCI_RESP (1<<0) #define MCI_LONG_RESP (1<<1) /* controller registers */ #define SD_BASE 0xC6070000 -/* - * STATUS register - * & 0xBA80 = MCI_INT_DCRC | MCI_INT_DRTO | MCI_INT_FRUN | \ - * MCI_INT_HLE | MCI_INT_SBE | MCI_INT_EBE - * & 8 = MCI_INT_DTO - * & 0x428 = MCI_INT_DTO | MCI_INT_RXDR | MCI_INT_HTO - * & 0x418 = MCI_INT_DTO | MCI_INT_TXDR | MCI_INT_HTO - */ - -/* - * INFO on CMD register - * - * if(cmd >= 200) cmd -= 200; (>= 200 = acmd?) - * - * COMMANDS (| (x<<16) BITS RESPONSE - * - * 1 ? reserved & ~0x80, | 0x40, | 0x8000 ? - * 5 ? reserved for I/O cards & ~0x80, | 0x40 ? - * 11 ? reserved & ~0x80, | 0x40, | 0x2200, | 0x800 ? - * 14 ? reserved & ~0x80, | 0x40, | 0x2200, ~0x1000 ? - * 19 ? reserved & ~0x80, |0x40, | 0x2700, & ~0x1000 ? - * 20 ? reserved & ~0x80, |0x40, | 0x2700, | 0x800 ? - * 23 ? reserved & ~0x80, | 0x40 ? - * 39 ? reserved & ~0x80, | 0x40 ? - * 51 ? reserved & ~0x80, | 0x40, | 0x2000, | 0x200 ? - * 52 ? reserved for I/O & ~0x80, | 0x40 ? - * 53 ? reserved for I/O & ~0x80, | 0x40, | 0x2200, & ~0x1000 ? - * 253 ? & ~0x80, |0x40, | 0x2700, & ~0x1000 ? - * - * 0 GO IDLE STATE & ~0x4000, & ~0xC0, | 0x4000 no - * 2 ALL SEND CID & ~0x4000, |0xC0 r2 - * 3 SEND RCA & ~0x80, | 0x40 r6 - * 6 SWITCH_FUNC & ~0x80, | 0x40 r1 - * 7 SELECT CARD & ~0x80, | 0x40 r1b - * 8 SEND IF COND & ~0x80, | 0x40, | 0x2200, & ~0x1000 r7 - * 9 SEND CSD & ~0x4000, | 0xc0 r2 - * 12 STOP TRANSMISSION & ~0x80, | 0x40, | 0x4000 r1b - * 13 SEND STATUS & ~0x80, | 0x40 r1 - * 15 GO INACTIVE STATE & ~0x4000, & ~0xC0 no - * 16 SET BLOCKLEN & ~0x80, | 0x40 r1 - * 17 READ SINGLE BLOCK & ~0x80, | 0x40, | 0x2200 r1 - * 18 READ MULTIPLE BLOCK & ~0x80, | 0x40, | 0x2200 r1 - * 24 WRITE BLOCK & ~0x80, |0x40, | 0x2700 r1 - * 25 WRITE MULTIPLE BLOCK & ~0x80, |0x40, | 0x2700 r1 - * 41 SEND APP OP COND & ~0x80, | 0x40 r3 - * 42 LOCK UNLOCK & ~0x80, |0x40, | 0x2700 r1 - * 55 APP CMD & ~0x80, | 0x40 r1 - * 206 SET BUS WIDTH & ~0x80, | 0x40, | 0x2000 r1 - * 207 SELECT CARD ? & ~0x4000, & ~0xC0 r1b - * - * - * bits 5:0 = cmd - * bit 6 (0x40) = response - * bit 7 (0x80) = long response - * => like pl180 <= - * BIT SET IN COMANDS: - * - * bit 8 (0x100) ? write block, write multi_block, lock/unlock - * bit 9 (0x200) ? send if cond, read block, read multi_block, write block, write multi_block, lock/unlock - * bit 10 (0x400) ? write block, write multi_block, lock/unlock - * bit 11 (0x800) ? - * bit 12 (0x1000) ? - * bit 13 (0x2000) ? send if cond, read block, read multi_block, write block, write multi_block, lock/unlock, set bus width - * bit 14 (0x4000) ? go idle state, stop transmission - * bit 15 (0x8000) ? - * - */ - #define SD_REG(x) (*(volatile unsigned long *) (SD_BASE+x)) #define MCI_CTRL SD_REG(0x00) +/* control bits */ #define CTRL_RESET (1<<0) #define FIFO_RESET (1<<1) #define DMA_RESET (1<<2) @@ -169,6 +103,23 @@ static void printf(const char *format, ...) #define MCI_ARGUMENT SD_REG(0x28) #define MCI_COMMAND SD_REG(0x2C) +/* command bits (bits 5:0 are the command index) */ +#define CMD_RESP_EXP_BIT (1<<6) +#define CMD_RESP_LENGTH_BIT (1<<7) +#define CMD_CHECK_CRC_BIT (1<<8) +#define CMD_DATA_EXP_BIT (1<<9) +#define CMD_RW_BIT (1<<10) +#define CMD_TRANSMODE_BIT (1<<11) +#define CMD_SENT_AUTO_STOP_BIT (1<<12) +#define CMD_WAIT_PRV_DAT_BIT (1<<13) +#define CMD_ABRT_CMD_BIT (1<<14) +#define CMD_SEND_INIT_BIT (1<<15) +#define CMD_SEND_CLK_ONLY (1<<21) +#define CMD_READ_CEATA (1<<22) +#define CMD_CCS_EXPECTED (1<<23) +#define CMD_DONE_BIT (1<<31) + + #define MCI_RESP0 SD_REG(0x30) #define MCI_RESP1 SD_REG(0x34) #define MCI_RESP2 SD_REG(0x38) @@ -179,6 +130,15 @@ static void printf(const char *format, ...) * status clear */ #define MCI_STATUS SD_REG(0x48) +/* + * STATUS register + * & 0xBA80 = MCI_INT_DCRC | MCI_INT_DRTO | MCI_INT_FRUN | \ + * MCI_INT_HLE | MCI_INT_SBE | MCI_INT_EBE + * & 8 = MCI_INT_DTO + * & 0x428 = MCI_INT_DTO | MCI_INT_RXDR | MCI_INT_HTO + * & 0x418 = MCI_INT_DTO | MCI_INT_TXDR | MCI_INT_HTO + */ + /* interrupt bits */ #define MCI_INT_CRDDET (1<<0) #define MCI_INT_RE (1<<1) @@ -222,13 +182,6 @@ static void printf(const char *format, ...) #define MCI_FIFO ((unsigned long *) (SD_BASE+0x100)) -#define MCI_COMMAND_ENABLE (1<<31) -#define MCI_COMMAND_ACTIVE MCI_COMMAND_ENABLE -#define MCI_COMMAND_RESPONSE (1<<6) -#define MCI_COMMAND_LONG_RESPONSE (1<<7) - - - static int sd_init_card(void); static void init_controller(void); @@ -318,41 +271,43 @@ static bool send_cmd(const int cmd, const int arg, const int flags, unsigned long *response) { int val; - val = cmd | MCI_COMMAND_ENABLE; + val = cmd | CMD_DONE_BIT; if(flags & MCI_RESP) { - val |= MCI_COMMAND_RESPONSE; + val |= CMD_RESP_EXP_BIT; if(flags & MCI_LONG_RESP) - val |= MCI_COMMAND_LONG_RESPONSE; + val |= CMD_RESP_LENGTH_BIT; } - if(cmd == 18) /* r */ - val |= 0x2200; - else if(cmd == 25) /* w */ - val |= 0x2700; + if(cmd == SD_READ_MULTIPLE_BLOCK || cmd == SD_WRITE_MULTIPLE_BLOCK) + { + val |= CMD_WAIT_PRV_DAT_BIT | CMD_DATA_EXP_BIT; + if(cmd == SD_WRITE_MULTIPLE_BLOCK) + val |= CMD_RW_BIT | CMD_CHECK_CRC_BIT; + } int tmp = MCI_CLKENA; MCI_CLKENA = 0; - MCI_COMMAND = 0x80202000; + MCI_COMMAND = CMD_DONE_BIT|CMD_SEND_CLK_ONLY|CMD_WAIT_PRV_DAT_BIT; MCI_ARGUMENT = 0; int max = 10; - while(max-- && MCI_COMMAND & MCI_COMMAND_ACTIVE); + while(max-- && MCI_COMMAND & CMD_DONE_BIT); MCI_CLKDIV &= ~0xff; MCI_CLKDIV |= 0; - MCI_COMMAND = 0x80202000; + MCI_COMMAND = CMD_DONE_BIT|CMD_SEND_CLK_ONLY|CMD_WAIT_PRV_DAT_BIT; MCI_ARGUMENT = 0; max = 10; - while(max-- && MCI_COMMAND & MCI_COMMAND_ACTIVE); + while(max-- && MCI_COMMAND & CMD_DONE_BIT); MCI_CLKENA = tmp; - MCI_COMMAND = 0x80202000; + MCI_COMMAND = CMD_DONE_BIT|CMD_SEND_CLK_ONLY|CMD_WAIT_PRV_DAT_BIT; MCI_ARGUMENT = 0; max = 10; - while(max-- && MCI_COMMAND & MCI_COMMAND_ACTIVE); + while(max-- && MCI_COMMAND & CMD_DONE_BIT); mci_delay(); @@ -362,7 +317,7 @@ static bool send_cmd(const int cmd, const int arg, const int flags, MCI_CTRL |= INT_ENABLE; max = 1000; - while(max-- && MCI_COMMAND & MCI_COMMAND_ACTIVE); /* wait for cmd completion */ + while(max-- && MCI_COMMAND & CMD_DONE_BIT); /* wait for cmd completion */ if(!max) return false; @@ -538,9 +493,9 @@ static void init_controller(void) MCI_CLKENA = (1<<shift) - 1; MCI_ARGUMENT = 0; - MCI_COMMAND = 0x80202000; + MCI_COMMAND = CMD_DONE_BIT|CMD_SEND_CLK_ONLY|CMD_WAIT_PRV_DAT_BIT; int max = 10; - while(max-- && (MCI_COMMAND & (1<<31))) ; + while(max-- && (MCI_COMMAND & CMD_DONE_BIT)) ; MCI_DEBNCE = 0xfffff; /* default value */ |