Thank you to anyone who has already donated - your generous donations helped make three months of treatment possible.
My brother Nate continues to fight stage IV Hodgkin's lymphoma. He's just 31, with a wife and baby girl. They have no active income (since he's been unable to return to work), no insurance, and cannot afford the treatment he needs. Nate and his family need your help. Please consider a donation, every dollar helps. Thanks.
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firmware/target/arm/as3525/sd-as3525v2.c | 248 +++++++++++++++--------------- 1 files changed, 125 insertions(+), 123 deletions(-) diff --git a/firmware/target/arm/as3525/sd-as3525v2.c b/firmware/target/arm/as3525/sd-as3525v2.c index 70c0477..417f2d0 100644 static void printf(const char *format, ...) /* FIXME */ #define MCI_POWER #define MCI_CLOCK + +#define UNKNOWN_REG_00 (*(volatile unsigned long *) (SD_BASE+0x00)) +#define UNKNOWN_REG_04 (*(volatile unsigned long *) (SD_BASE+0x04)) +#define UNKNOWN_REG_08 (*(volatile unsigned long *) (SD_BASE+0x08)) +#define UNKNOWN_REG_0C (*(volatile unsigned long *) (SD_BASE+0x0C)) +#define UNKNOWN_REG_10 (*(volatile unsigned long *) (SD_BASE+0x10)) +#define UNKNOWN_REG_14 (*(volatile unsigned long *) (SD_BASE+0x14)) +#define UNKNOWN_REG_18 (*(volatile unsigned long *) (SD_BASE+0x18)) +#define UNKNOWN_REG_1C (*(volatile unsigned long *) (SD_BASE+0x1C)) +#define UNKNOWN_REG_20 (*(volatile unsigned long *) (SD_BASE+0x20)) +#define MCI_MASK (*(volatile unsigned long *) (SD_BASE+0x24)) #define MCI_ARGUMENT (*(volatile unsigned long *) (SD_BASE+0x28)) #define MCI_COMMAND (*(volatile unsigned long *) (SD_BASE+0x2C)) -#define MCI_RESPCMD #define MCI_RESP0 (*(volatile unsigned long *) (SD_BASE+0x30)) #define MCI_RESP1 (*(volatile unsigned long *) (SD_BASE+0x34)) #define MCI_RESP2 (*(volatile unsigned long *) (SD_BASE+0x38)) #define MCI_RESP3 (*(volatile unsigned long *) (SD_BASE+0x3C)) +#define MCI_STATUS (*(volatile unsigned long *) (SD_BASE+0x40)) +#define MCI_CLEAR (*(volatile unsigned long *) (SD_BASE+0x44)) +#define UNKNOWN_REG_48 (*(volatile unsigned long *) (SD_BASE+0x48)) +#define UNKNOWN_REG_4C (*(volatile unsigned long *) (SD_BASE+0x4C)) +#define UNKNOWN_REG_64 (*(volatile unsigned long *) (SD_BASE+0x64)) +#define UNKNOWN_REG_70 (*(volatile unsigned long *) (SD_BASE+0x70)) + +/* Registers we use with pl180 but have not figured out here yet */ +#define MCI_POWER +#define MCI_CLOCK +#define MCI_RESPCMD #define MCI_DATA_TIMER #define MCI_DATA_LENGTH #define MCI_DATA_CTRL -#define MCI_STATUS (*(volatile unsigned long *) (SD_BASE+0x40)) -#define MCI_CLEAR (*(volatile unsigned long *) (SD_BASE+0x44)) -#define MCI_MASK (*(volatile unsigned long *) (SD_BASE+0x24)) +#define MCI_DATA_CNT #define MCI_SELECT +#define MCI_FIFO_CNT #define MCI_ERROR 0 /* FIXME */ static inline void mci_delay(void) { int i = 0xffff; while(i--) ; } void INT_NAND(void) { - (*(volatile unsigned long *) (SD_BASE+0x0)) &= ~0x10; // ? + UNKNOWN_REG_00 &= ~0x10; // ? const int status = MCI_STATUS; #if 0 void INT_NAND(void) * read resp (6, 7, 12, 42) : while bit 9 is unset ; * */ - printf("%x %x", status, (*(volatile unsigned long *) (SD_BASE+0x48))); + printf("%x %x", status, UNKNOWN_REG_48); //while(!button_read_device()); //while(button_read_device()); - (*(volatile unsigned long *) (SD_BASE+0x0)) |= 0x10; // ? + UNKNOWN_REG_00 |= 0x10; // ? } static bool send_cmd(const int cmd, const int arg, const int flags, unsigned long *response) { - int val; - val = cmd | MCI_COMMAND_ENABLE; - if(flags & MCI_RESP) - { - val |= MCI_COMMAND_RESPONSE; - if(flags & MCI_LONG_RESP) - val |= MCI_COMMAND_LONG_RESPONSE; - } - - if(cmd == 18) /* r */ - val |= 0x2200; - else if(cmd == 25) /* w */ - val |= 0x2700; - - int tmp = (*(volatile unsigned long *) (SD_BASE+0x10)); - (*(volatile unsigned long *) (SD_BASE+0x10)) = 0; + int tmp = UNKNOWN_REG_10; + UNKNOWN_REG_10 = 0; MCI_COMMAND = 0x80202000; MCI_ARGUMENT = 0; int max = 10; while(max-- && MCI_COMMAND & MCI_COMMAND_ACTIVE); - (*(volatile unsigned long *) (SD_BASE+0x08)) &= ~0xff; - (*(volatile unsigned long *) (SD_BASE+0x08)) |= 0; + UNKNOWN_REG_08 &= ~0xff; + UNKNOWN_REG_08 |= 0; MCI_COMMAND = 0x80202000; MCI_ARGUMENT = 0; max = 10; while(max-- && MCI_COMMAND & MCI_COMMAND_ACTIVE); - (*(volatile unsigned long *) (SD_BASE+0x10)) = tmp; + UNKNOWN_REG_10 = tmp; MCI_COMMAND = 0x80202000; MCI_ARGUMENT = 0; static bool send_cmd(const int cmd, const int arg, const int flags, mci_delay(); MCI_ARGUMENT = arg; - MCI_COMMAND = val; - (*(volatile unsigned long *) (SD_BASE+0x00)) |= 0x10; + /* Construct MCI_COMMAND & enable CPSM */ + MCI_COMMAND = + /*b0:5*/ cmd + /* b6 */| ((flags & (MCI_RESP|MCI_LONG_RESP)) ? MCI_COMMAND_RESPONSE : 0) + /* b7 */| ((flags & MCI_LONG_RESP) ? MCI_COMMAND_LONG_RESPONSE : 0) + /* b8 | bit 8 not determined yet */ + /* b9 */| ((cmd==18 || cmd==25)? (1<<9): 0) + /* b10*/| ((cmd==25)? (1<<10): 0) + /* b11*/| ((cmd==25)? (1<<11): 0) + /* b12 | bit 12 not determined yet */ + /* b13*/| ((cmd==18 || cmd==25)? (1<<13): 0) + /* b14:30 not determined yet */ + /* b31*/| MCI_COMMAND_ENABLE; /* Enables CPSM */ + + UNKNOWN_REG_00 |= 0x10; max = 1000; while(max-- && MCI_COMMAND & MCI_COMMAND_ACTIVE); /* wait for cmd completion */ static bool send_cmd(const int cmd, const int arg, const int flags, static int sd_init_card(void) { unsigned long response; + long init_timeout; unsigned long temp_reg[4]; - int max_tries = 100; /* max acmd41 attemps */ - bool sdhc; + bool sdv2 = false; int i; + + /* FIXME: Need to set MCICLK speed to 400 kHz for Ident mode */ + + /* 100 - 400kHz clock required for Identification Mode */ + /* Start of Card Identification Mode ************************************/ + if(!send_cmd(SD_GO_IDLE_STATE, 0, MCI_NO_RESP, NULL)) return -1; mci_delay(); - sdhc = false; if(send_cmd(SD_SEND_IF_COND, 0x1AA, MCI_RESP, &response)) if((response & 0xFFF) == 0x1AA) - sdhc = true; + sdv2 = true; + + /* timeout for initialization is 1sec, from SD Specification 2.00 */ + init_timeout = current_tick + HZ; do { - /* some MicroSD cards seems to need more delays, so play safe */ - mci_delay(); - mci_delay(); - mci_delay(); - - /* app_cmd */ - if( !send_cmd(SD_APP_CMD, 0, MCI_RESP, &response) /*|| - !(response & (1<<5))*/ ) - { - return -2; - } + /* this timeout is the only valid error for this loop*/ + if(TIME_AFTER(current_tick, init_timeout)) + return -2; - /* acmd41 */ - if(!send_cmd(SD_APP_OP_COND, (sdhc ? 0x40FF8000 : (1<<23)), - MCI_RESP, &card_info.ocr)) - return -3; - } while(!(card_info.ocr & (1<<31)) && max_tries--); + /* app_cmd */ + send_cmd(SD_APP_CMD, 0, MCI_RESP, &response); - if(max_tries < 0) - return -4; + /* ACMD41 For v2 cards set HCS bit[30] & send host voltage range to all */ + send_cmd(SD_APP_OP_COND, (0x00FF8000 | (sdv2 ? 1<<30 : 0)), + MCI_RESP, &card_info.ocr); - mci_delay(); - mci_delay(); - mci_delay(); + } while(!(card_info.ocr & (1<<31))); + + /* CMD2 send CID */ + if(!send_cmd(SD_ALL_SEND_CID, 0, MCI_RESP|MCI_LONG_RESP, + temp_reg)) + return -3; + + for(i=0; i<4; i++) + card_info.cid[3-i] = temp_reg[i]; - /* send CID */ - if(!send_cmd(SD_ALL_SEND_CID, 0, MCI_RESP|MCI_LONG_RESP, card_info.cid)) - return -5; + /* CMD3 send RCA */ + if(!send_cmd(SD_SEND_RELATIVE_ADDR, 0, MCI_RESP, + &card_info.rca)) + return -4; - /* send RCA */ - if(!send_cmd(SD_SEND_RELATIVE_ADDR, 0, MCI_RESP, &card_info.rca)) - return -6; + /* End of Card Identification Mode ************************************/ - /* send CSD */ + /* CMD9 send CSD */ if(!send_cmd(SD_SEND_CSD, card_info.rca, - MCI_RESP|MCI_LONG_RESP, temp_reg)) - return -7; + MCI_RESP|MCI_LONG_RESP, temp_reg)) + return -9; for(i=0; i<4; i++) - card_info.csd[3-i] = temp_reg[i]; + card_info.csd[3-i] = temp_reg[i]; sd_parse_csd(&card_info); - if(!send_cmd(SD_APP_CMD, 0, MCI_RESP, &response) || - !send_cmd(42, 0, MCI_NO_RESP, NULL)) /* disconnect the 50 KOhm pull-up - resistor on CD/DAT3 */ - return -13; - - if(!send_cmd(SD_APP_CMD, card_info.rca, MCI_NO_RESP, NULL)) - return -10; - - if(!send_cmd(SD_SET_BUS_WIDTH, card_info.rca | 2, MCI_NO_RESP, NULL)) - return -11; - - (*(volatile unsigned long *) (SD_BASE+0x18)) &= ~(0x10001); - (*(volatile unsigned long *) (SD_BASE+0x18)) |= 0x1; + UNKNOWN_REG_18 &= ~(0x10001); + UNKNOWN_REG_18 |= 0x1; if(!send_cmd(SD_SELECT_CARD, card_info.rca, MCI_NO_RESP, NULL)) return -9; - /* not sent in init_card() by OF */ - if(!send_cmd(SD_SET_BLOCKLEN, card_info.blocksize, MCI_NO_RESP, - NULL)) - return -12; - card_info.initialized = 1; return 0; static void sd_thread(void) static void init_controller(void) { - int tmp = (*(volatile unsigned long *) (SD_BASE+0x70)); + int tmp = UNKNOWN_REG_70; int shift = 1 + ((tmp << 26) >> 27); - (*(volatile unsigned long *) (SD_BASE+0x04)) &= ~((1 << shift) -1); - (*(volatile unsigned long *) (SD_BASE+0x04)) = (1 << shift) -1; + UNKNOWN_REG_04 &= ~((1 << shift) -1); + UNKNOWN_REG_04 = (1 << shift) -1; mci_delay(); - (*(volatile unsigned long *) (SD_BASE+0x00)) |= 1; + UNKNOWN_REG_00 |= 1; int max = 1000; - while(max-- && !(*(volatile unsigned long *) (SD_BASE+0x00)) & 1) + while(max-- && !UNKNOWN_REG_00 & 1) ; MCI_CLEAR = 0xffffffff; - MCI_MASK = 0xffffbffe; + MCI_MASK = 0xffffbffe; /* (1<<0 | 1<<14) */ - (*(volatile unsigned long *) (SD_BASE+0x00)) |= 0x10; - (*(volatile unsigned long *) (SD_BASE+0x14)) = 0xffffffff; + UNKNOWN_REG_00 |= 0x10; + UNKNOWN_REG_14 = 0xffffffff; - (*(volatile unsigned long *) (SD_BASE+0x10)) = (1<<shift) - 1; + UNKNOWN_REG_10 = (1<<shift) - 1; MCI_ARGUMENT = 0; - MCI_COMMAND = 0x80202000; + MCI_COMMAND = 0x80202000; /* (1<<31|1<<21|1<<13) */ max = 10; while(max-- && (MCI_COMMAND & (1<<31))) ; - (*(volatile unsigned long *) (SD_BASE+0x64)) = 0xfffff; + UNKNOWN_REG_64 = 0xfffff; - (*(volatile unsigned long *) (SD_BASE+0x4c)) = ~0x7fff0fff; // interrupt mask ? - (*(volatile unsigned long *) (SD_BASE+0x4c)) |= 0x503f0080; + UNKNOWN_REG_4C = ~0x7fff0fff; // interrupt mask ? + UNKNOWN_REG_4C |= 0x503f0080; MCI_MASK = 0xffffbffe; } int sd_init(void) (CLK_DIV(AS3525_PLLA_FREQ, AS3525_MS_FREQ) -1) | 1; /* ?? */ - *(volatile int*)0xC80F003C = (1<<7) | + *(volatile int*)(CGU_BASE + 0x3C) = (1<<7) | (CLK_DIV(AS3525_PLLA_FREQ, 24000000) -1) | 1; wakeup_init(&transfer_completion_signal); void sd_get_info(struct storage_info *info) static int sd_wait_for_state(unsigned int state) { - unsigned long response; - unsigned int timeout = 100; /* ticks */ - long t = current_tick; + unsigned long response = 0; + unsigned int timeout = current_tick + 100; /* 100 ticks timeout */ while (1) { - long tick; - - if(!send_cmd(SD_SEND_STATUS, card_info.rca, - MCI_RESP, &response)) - return -1; + if(!send_cmd(SD_SEND_STATUS, card_info.rca, + MCI_RESP, &response)) + return -1; - if (((response >> 9) & 0xf) == state) - return 0; + if (((response >> 9) & 0xf) == state) + return 0; - if(TIME_AFTER(current_tick, t + timeout)) - return -10 * ((response >> 9) & 0xf); + if(TIME_AFTER(current_tick, timeout)) + return -2; - if (TIME_AFTER((tick = current_tick), next_yield)) - { - yield(); - timeout += current_tick - tick; - next_yield = tick + MIN_YIELD_PERIOD; - } + if (TIME_AFTER(current_tick, next_yield)) + { + yield(); + next_yield = current_tick + MIN_YIELD_PERIOD; + } } } static int sd_transfer_sectors(unsigned long start, int count, void* buf, bool w const int cmd = write ? SD_WRITE_MULTIPLE_BLOCK : SD_READ_MULTIPLE_BLOCK; - (*(volatile unsigned long *) (SD_BASE+0x00)) |= 2; - while(( *(volatile unsigned long *) (SD_BASE+0x00)) & 2) ; + UNKNOWN_REG_00 |= 2; + while(UNKNOWN_REG_00 & 2) ; - //(*(volatile unsigned long *) (SD_BASE+0x1c)) = 512; - (*(volatile unsigned long *) (SD_BASE+0x20)) = transfer * 512; + //UNKNOWN_REG_1C = 512; + UNKNOWN_REG_20 = transfer * 512; - (*(volatile unsigned long *) (SD_BASE+0x00)) |= 2; - while(( *(volatile unsigned long *) (SD_BASE+0x00)) & 2) ; + UNKNOWN_REG_00 |= 2; + while(UNKNOWN_REG_00 & 2) ; - (*(volatile unsigned long *) (SD_BASE+0x4c)) &= ~0x7fff0fff; + UNKNOWN_REG_4C &= ~0x7fff0fff; if(0) { - (*(volatile unsigned long *) (SD_BASE+0x00)) |= 0x20; + UNKNOWN_REG_00 |= 0x20; MCI_MASK = 0xBE8C; - (*(volatile unsigned long *) (SD_BASE+0x4c)) |= 0x503f0080; + UNKNOWN_REG_4C |= 0x503f0080; } else { MCI_MASK = 0xBEB8; - (*(volatile unsigned long *) (SD_BASE+0x4c)) |= 0x3f0030; + UNKNOWN_REG_4C |= 0x3f0030; } if(card_info.ocr & (1<<30) ) /* SDHC */ |
