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/*
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* SD Memory Card emulation as defined in the "SD Memory Card Physical
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* layer specification, Version 1.10."
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*
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* Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org>
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* Copyright (c) 2007 CodeSourcery
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "hw.h" |
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#include "block.h" |
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#include "sd.h" |
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//#define DEBUG_SD 1
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#ifdef DEBUG_SD
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#define DPRINTF(fmt, ...) \
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do { fprintf(stderr, "SD: " fmt , ## __VA_ARGS__); } while (0) |
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#else
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#define DPRINTF(fmt, ...) do {} while(0) |
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#endif
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typedef enum { |
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sd_r0 = 0, /* no response */ |
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sd_r1, /* normal response command */
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sd_r2_i, /* CID register */
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sd_r2_s, /* CSD register */
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sd_r3, /* OCR register */
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sd_r6 = 6, /* Published RCA response */ |
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sd_r7, /* Operating voltage */
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sd_r1b = -1,
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} sd_rsp_type_t; |
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|
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struct SDState {
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enum {
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sd_inactive, |
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sd_card_identification_mode, |
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sd_data_transfer_mode, |
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} mode; |
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enum {
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sd_inactive_state = -1,
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sd_idle_state = 0,
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sd_ready_state, |
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sd_identification_state, |
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sd_standby_state, |
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sd_transfer_state, |
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sd_sendingdata_state, |
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sd_receivingdata_state, |
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sd_programming_state, |
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sd_disconnect_state, |
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} state; |
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uint32_t ocr; |
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uint8_t scr[8];
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uint8_t cid[16];
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uint8_t csd[16];
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uint16_t rca; |
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uint32_t card_status; |
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uint8_t sd_status[64];
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uint32_t vhs; |
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int wp_switch;
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int *wp_groups;
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uint64_t size; |
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int blk_len;
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uint32_t erase_start; |
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uint32_t erase_end; |
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uint8_t pwd[16];
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int pwd_len;
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int function_group[6]; |
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int spi;
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int current_cmd;
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int blk_written;
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uint64_t data_start; |
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uint32_t data_offset; |
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uint8_t data[512];
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qemu_irq readonly_cb; |
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qemu_irq inserted_cb; |
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BlockDriverState *bdrv; |
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uint8_t *buf; |
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|
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int enable;
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}; |
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|
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static void sd_set_status(SDState *sd) |
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{ |
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switch (sd->state) {
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case sd_inactive_state:
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sd->mode = sd_inactive; |
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break;
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case sd_idle_state:
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case sd_ready_state:
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case sd_identification_state:
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sd->mode = sd_card_identification_mode; |
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break;
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|
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case sd_standby_state:
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case sd_transfer_state:
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case sd_sendingdata_state:
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case sd_receivingdata_state:
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case sd_programming_state:
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case sd_disconnect_state:
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sd->mode = sd_data_transfer_mode; |
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break;
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} |
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sd->card_status &= ~CURRENT_STATE; |
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sd->card_status |= sd->state << 9;
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} |
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static const sd_cmd_type_t sd_cmd_type[64] = { |
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sd_bc, sd_none, sd_bcr, sd_bcr, sd_none, sd_none, sd_none, sd_ac, |
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sd_bcr, sd_ac, sd_ac, sd_adtc, sd_ac, sd_ac, sd_none, sd_ac, |
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sd_ac, sd_adtc, sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, |
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sd_adtc, sd_adtc, sd_adtc, sd_adtc, sd_ac, sd_ac, sd_adtc, sd_none, |
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sd_ac, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, |
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sd_none, sd_none, sd_bc, sd_none, sd_none, sd_none, sd_none, sd_none, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, |
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sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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}; |
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static const sd_cmd_type_t sd_acmd_type[64] = { |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_ac, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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sd_none, sd_bcr, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_none, |
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sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, sd_none, sd_none, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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}; |
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static const int sd_cmd_class[64] = { |
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0, 0, 0, 0, 0, 9, 10, 0, 0, 0, 0, 1, 0, 0, 0, 0, |
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2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 6, 6, 6, 6, |
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5, 5, 10, 10, 10, 10, 5, 9, 9, 9, 7, 7, 7, 7, 7, 7, |
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7, 7, 10, 7, 9, 9, 9, 8, 8, 10, 8, 8, 8, 8, 8, 8, |
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}; |
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static uint8_t sd_crc7(void *message, size_t width) |
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{ |
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int i, bit;
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uint8_t shift_reg = 0x00;
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uint8_t *msg = (uint8_t *) message; |
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for (i = 0; i < width; i ++, msg ++) |
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for (bit = 7; bit >= 0; bit --) { |
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shift_reg <<= 1;
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if ((shift_reg >> 7) ^ ((*msg >> bit) & 1)) |
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shift_reg ^= 0x89;
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} |
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return shift_reg;
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} |
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static uint16_t sd_crc16(void *message, size_t width) |
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{ |
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int i, bit;
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uint16_t shift_reg = 0x0000;
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uint16_t *msg = (uint16_t *) message; |
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width <<= 1;
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for (i = 0; i < width; i ++, msg ++) |
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for (bit = 15; bit >= 0; bit --) { |
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shift_reg <<= 1;
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if ((shift_reg >> 15) ^ ((*msg >> bit) & 1)) |
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shift_reg ^= 0x1011;
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} |
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return shift_reg;
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} |
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static void sd_set_ocr(SDState *sd) |
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{ |
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/* All voltages OK, card power-up OK, Standard Capacity SD Memory Card */
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sd->ocr = 0x80ffff00;
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} |
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static void sd_set_scr(SDState *sd) |
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{ |
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sd->scr[0] = 0x00; /* SCR Structure */ |
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sd->scr[1] = 0x2f; /* SD Security Support */ |
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sd->scr[2] = 0x00; |
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sd->scr[3] = 0x00; |
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sd->scr[4] = 0x00; |
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sd->scr[5] = 0x00; |
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sd->scr[6] = 0x00; |
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sd->scr[7] = 0x00; |
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} |
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#define MID 0xaa |
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#define OID "XY" |
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#define PNM "QEMU!" |
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#define PRV 0x01 |
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#define MDT_YR 2006 |
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#define MDT_MON 2 |
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static void sd_set_cid(SDState *sd) |
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{ |
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sd->cid[0] = MID; /* Fake card manufacturer ID (MID) */ |
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sd->cid[1] = OID[0]; /* OEM/Application ID (OID) */ |
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sd->cid[2] = OID[1]; |
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sd->cid[3] = PNM[0]; /* Fake product name (PNM) */ |
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sd->cid[4] = PNM[1]; |
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sd->cid[5] = PNM[2]; |
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sd->cid[6] = PNM[3]; |
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sd->cid[7] = PNM[4]; |
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sd->cid[8] = PRV; /* Fake product revision (PRV) */ |
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sd->cid[9] = 0xde; /* Fake serial number (PSN) */ |
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sd->cid[10] = 0xad; |
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sd->cid[11] = 0xbe; |
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sd->cid[12] = 0xef; |
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sd->cid[13] = 0x00 | /* Manufacture date (MDT) */ |
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((MDT_YR - 2000) / 10); |
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sd->cid[14] = ((MDT_YR % 10) << 4) | MDT_MON; |
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sd->cid[15] = (sd_crc7(sd->cid, 15) << 1) | 1; |
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} |
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|
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#define HWBLOCK_SHIFT 9 /* 512 bytes */ |
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#define SECTOR_SHIFT 5 /* 16 kilobytes */ |
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#define WPGROUP_SHIFT 7 /* 2 megs */ |
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#define CMULT_SHIFT 9 /* 512 times HWBLOCK_SIZE */ |
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#define WPGROUP_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) |
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static const uint8_t sd_csd_rw_mask[16] = { |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xfe, |
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}; |
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static void sd_set_csd(SDState *sd, uint64_t size) |
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{ |
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uint32_t csize = (size >> (CMULT_SHIFT + HWBLOCK_SHIFT)) - 1;
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uint32_t sectsize = (1 << (SECTOR_SHIFT + 1)) - 1; |
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uint32_t wpsize = (1 << (WPGROUP_SHIFT + 1)) - 1; |
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|
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if (size <= 0x40000000) { /* Standard Capacity SD */ |
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sd->csd[0] = 0x00; /* CSD structure */ |
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sd->csd[1] = 0x26; /* Data read access-time-1 */ |
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sd->csd[2] = 0x00; /* Data read access-time-2 */ |
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sd->csd[3] = 0x5a; /* Max. data transfer rate */ |
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sd->csd[4] = 0x5f; /* Card Command Classes */ |
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sd->csd[5] = 0x50 | /* Max. read data block length */ |
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HWBLOCK_SHIFT; |
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sd->csd[6] = 0xe0 | /* Partial block for read allowed */ |
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((csize >> 10) & 0x03); |
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sd->csd[7] = 0x00 | /* Device size */ |
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((csize >> 2) & 0xff); |
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sd->csd[8] = 0x3f | /* Max. read current */ |
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((csize << 6) & 0xc0); |
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sd->csd[9] = 0xfc | /* Max. write current */ |
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((CMULT_SHIFT - 2) >> 1); |
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sd->csd[10] = 0x40 | /* Erase sector size */ |
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(((CMULT_SHIFT - 2) << 7) & 0x80) | (sectsize >> 1); |
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sd->csd[11] = 0x00 | /* Write protect group size */ |
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((sectsize << 7) & 0x80) | wpsize; |
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sd->csd[12] = 0x90 | /* Write speed factor */ |
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(HWBLOCK_SHIFT >> 2);
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sd->csd[13] = 0x20 | /* Max. write data block length */ |
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((HWBLOCK_SHIFT << 6) & 0xc0); |
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sd->csd[14] = 0x00; /* File format group */ |
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sd->csd[15] = (sd_crc7(sd->csd, 15) << 1) | 1; |
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} else { /* SDHC */ |
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size /= 512 * 1024; |
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size -= 1;
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sd->csd[0] = 0x40; |
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sd->csd[1] = 0x0e; |
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sd->csd[2] = 0x00; |
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sd->csd[3] = 0x32; |
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sd->csd[4] = 0x5b; |
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sd->csd[5] = 0x59; |
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sd->csd[6] = 0x00; |
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sd->csd[7] = (size >> 16) & 0xff; |
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sd->csd[8] = (size >> 8) & 0xff; |
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sd->csd[9] = (size & 0xff); |
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sd->csd[10] = 0x7f; |
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sd->csd[11] = 0x80; |
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sd->csd[12] = 0x0a; |
300 |
sd->csd[13] = 0x40; |
301 |
sd->csd[14] = 0x00; |
302 |
sd->csd[15] = 0x00; |
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sd->ocr |= 1 << 30; /* High Capacity SD Memort Card */ |
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} |
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} |
306 |
|
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static void sd_set_rca(SDState *sd) |
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{ |
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sd->rca += 0x4567;
|
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} |
311 |
|
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#define CARD_STATUS_A 0x02004100 |
313 |
#define CARD_STATUS_B 0x00c01e00 |
314 |
#define CARD_STATUS_C 0xfd39a028 |
315 |
|
316 |
static void sd_set_cardstatus(SDState *sd) |
317 |
{ |
318 |
sd->card_status = 0x00000100;
|
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} |
320 |
|
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static void sd_set_sdstatus(SDState *sd) |
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{ |
323 |
memset(sd->sd_status, 0, 64); |
324 |
} |
325 |
|
326 |
static int sd_req_crc_validate(SDRequest *req) |
327 |
{ |
328 |
uint8_t buffer[5];
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buffer[0] = 0x40 | req->cmd; |
330 |
buffer[1] = (req->arg >> 24) & 0xff; |
331 |
buffer[2] = (req->arg >> 16) & 0xff; |
332 |
buffer[3] = (req->arg >> 8) & 0xff; |
333 |
buffer[4] = (req->arg >> 0) & 0xff; |
334 |
return 0; |
335 |
return sd_crc7(buffer, 5) != req->crc; /* TODO */ |
336 |
} |
337 |
|
338 |
static void sd_response_r1_make(SDState *sd, |
339 |
uint8_t *response, uint32_t last_status) |
340 |
{ |
341 |
uint32_t mask = CARD_STATUS_B ^ ILLEGAL_COMMAND; |
342 |
uint32_t status; |
343 |
|
344 |
status = (sd->card_status & ~mask) | (last_status & mask); |
345 |
sd->card_status &= ~CARD_STATUS_C | APP_CMD; |
346 |
|
347 |
response[0] = (status >> 24) & 0xff; |
348 |
response[1] = (status >> 16) & 0xff; |
349 |
response[2] = (status >> 8) & 0xff; |
350 |
response[3] = (status >> 0) & 0xff; |
351 |
} |
352 |
|
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static void sd_response_r3_make(SDState *sd, uint8_t *response) |
354 |
{ |
355 |
response[0] = (sd->ocr >> 24) & 0xff; |
356 |
response[1] = (sd->ocr >> 16) & 0xff; |
357 |
response[2] = (sd->ocr >> 8) & 0xff; |
358 |
response[3] = (sd->ocr >> 0) & 0xff; |
359 |
} |
360 |
|
361 |
static void sd_response_r6_make(SDState *sd, uint8_t *response) |
362 |
{ |
363 |
uint16_t arg; |
364 |
uint16_t status; |
365 |
|
366 |
arg = sd->rca; |
367 |
status = ((sd->card_status >> 8) & 0xc000) | |
368 |
((sd->card_status >> 6) & 0x2000) | |
369 |
(sd->card_status & 0x1fff);
|
370 |
|
371 |
response[0] = (arg >> 8) & 0xff; |
372 |
response[1] = arg & 0xff; |
373 |
response[2] = (status >> 8) & 0xff; |
374 |
response[3] = status & 0xff; |
375 |
} |
376 |
|
377 |
static void sd_response_r7_make(SDState *sd, uint8_t *response) |
378 |
{ |
379 |
response[0] = (sd->vhs >> 24) & 0xff; |
380 |
response[1] = (sd->vhs >> 16) & 0xff; |
381 |
response[2] = (sd->vhs >> 8) & 0xff; |
382 |
response[3] = (sd->vhs >> 0) & 0xff; |
383 |
} |
384 |
|
385 |
static void sd_reset(SDState *sd, BlockDriverState *bdrv) |
386 |
{ |
387 |
uint64_t size; |
388 |
uint64_t sect; |
389 |
|
390 |
if (bdrv) {
|
391 |
bdrv_get_geometry(bdrv, §); |
392 |
} else {
|
393 |
sect = 0;
|
394 |
} |
395 |
sect <<= 9;
|
396 |
|
397 |
size = sect + 1;
|
398 |
|
399 |
sect = (size >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) + 1;
|
400 |
|
401 |
sd->state = sd_idle_state; |
402 |
sd->rca = 0x0000;
|
403 |
sd_set_ocr(sd); |
404 |
sd_set_scr(sd); |
405 |
sd_set_cid(sd); |
406 |
sd_set_csd(sd, size); |
407 |
sd_set_cardstatus(sd); |
408 |
sd_set_sdstatus(sd); |
409 |
|
410 |
sd->bdrv = bdrv; |
411 |
|
412 |
if (sd->wp_groups)
|
413 |
qemu_free(sd->wp_groups); |
414 |
sd->wp_switch = bdrv ? bdrv_is_read_only(bdrv) : 0;
|
415 |
sd->wp_groups = (int *) qemu_mallocz(sizeof(int) * sect); |
416 |
memset(sd->function_group, 0, sizeof(int) * 6); |
417 |
sd->erase_start = 0;
|
418 |
sd->erase_end = 0;
|
419 |
sd->size = size; |
420 |
sd->blk_len = 0x200;
|
421 |
sd->pwd_len = 0;
|
422 |
} |
423 |
|
424 |
static void sd_cardchange(void *opaque) |
425 |
{ |
426 |
SDState *sd = opaque; |
427 |
qemu_set_irq(sd->inserted_cb, bdrv_is_inserted(sd->bdrv)); |
428 |
if (bdrv_is_inserted(sd->bdrv)) {
|
429 |
sd_reset(sd, sd->bdrv); |
430 |
qemu_set_irq(sd->readonly_cb, sd->wp_switch); |
431 |
} |
432 |
} |
433 |
|
434 |
/* We do not model the chip select pin, so allow the board to select
|
435 |
whether card should be in SSI or MMC/SD mode. It is also up to the
|
436 |
board to ensure that ssi transfers only occur when the chip select
|
437 |
is asserted. */
|
438 |
SDState *sd_init(BlockDriverState *bs, int is_spi)
|
439 |
{ |
440 |
SDState *sd; |
441 |
|
442 |
sd = (SDState *) qemu_mallocz(sizeof(SDState));
|
443 |
sd->buf = qemu_memalign(512, 512); |
444 |
sd->spi = is_spi; |
445 |
sd->enable = 1;
|
446 |
sd_reset(sd, bs); |
447 |
if (sd->bdrv) {
|
448 |
bdrv_set_change_cb(sd->bdrv, sd_cardchange, sd); |
449 |
} |
450 |
return sd;
|
451 |
} |
452 |
|
453 |
void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert)
|
454 |
{ |
455 |
sd->readonly_cb = readonly; |
456 |
sd->inserted_cb = insert; |
457 |
qemu_set_irq(readonly, bdrv_is_read_only(sd->bdrv)); |
458 |
qemu_set_irq(insert, bdrv_is_inserted(sd->bdrv)); |
459 |
} |
460 |
|
461 |
static void sd_erase(SDState *sd) |
462 |
{ |
463 |
int i, start, end;
|
464 |
if (!sd->erase_start || !sd->erase_end) {
|
465 |
sd->card_status |= ERASE_SEQ_ERROR; |
466 |
return;
|
467 |
} |
468 |
|
469 |
start = sd->erase_start >> |
470 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
471 |
end = sd->erase_end >> |
472 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
473 |
sd->erase_start = 0;
|
474 |
sd->erase_end = 0;
|
475 |
sd->csd[14] |= 0x40; |
476 |
|
477 |
for (i = start; i <= end; i ++)
|
478 |
if (sd->wp_groups[i])
|
479 |
sd->card_status |= WP_ERASE_SKIP; |
480 |
} |
481 |
|
482 |
static uint32_t sd_wpbits(SDState *sd, uint64_t addr)
|
483 |
{ |
484 |
uint32_t i, wpnum; |
485 |
uint32_t ret = 0;
|
486 |
|
487 |
wpnum = addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
488 |
|
489 |
for (i = 0; i < 32; i ++, wpnum ++, addr += WPGROUP_SIZE) |
490 |
if (addr < sd->size && sd->wp_groups[wpnum])
|
491 |
ret |= (1 << i);
|
492 |
|
493 |
return ret;
|
494 |
} |
495 |
|
496 |
static void sd_function_switch(SDState *sd, uint32_t arg) |
497 |
{ |
498 |
int i, mode, new_func, crc;
|
499 |
mode = !!(arg & 0x80000000);
|
500 |
|
501 |
sd->data[0] = 0x00; /* Maximum current consumption */ |
502 |
sd->data[1] = 0x01; |
503 |
sd->data[2] = 0x80; /* Supported group 6 functions */ |
504 |
sd->data[3] = 0x01; |
505 |
sd->data[4] = 0x80; /* Supported group 5 functions */ |
506 |
sd->data[5] = 0x01; |
507 |
sd->data[6] = 0x80; /* Supported group 4 functions */ |
508 |
sd->data[7] = 0x01; |
509 |
sd->data[8] = 0x80; /* Supported group 3 functions */ |
510 |
sd->data[9] = 0x01; |
511 |
sd->data[10] = 0x80; /* Supported group 2 functions */ |
512 |
sd->data[11] = 0x43; |
513 |
sd->data[12] = 0x80; /* Supported group 1 functions */ |
514 |
sd->data[13] = 0x03; |
515 |
for (i = 0; i < 6; i ++) { |
516 |
new_func = (arg >> (i * 4)) & 0x0f; |
517 |
if (mode && new_func != 0x0f) |
518 |
sd->function_group[i] = new_func; |
519 |
sd->data[14 + (i >> 1)] = new_func << ((i * 4) & 4); |
520 |
} |
521 |
memset(&sd->data[17], 0, 47); |
522 |
crc = sd_crc16(sd->data, 64);
|
523 |
sd->data[65] = crc >> 8; |
524 |
sd->data[66] = crc & 0xff; |
525 |
} |
526 |
|
527 |
static inline int sd_wp_addr(SDState *sd, uint32_t addr) |
528 |
{ |
529 |
return sd->wp_groups[addr >>
|
530 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)]; |
531 |
} |
532 |
|
533 |
static void sd_lock_command(SDState *sd) |
534 |
{ |
535 |
int erase, lock, clr_pwd, set_pwd, pwd_len;
|
536 |
erase = !!(sd->data[0] & 0x08); |
537 |
lock = sd->data[0] & 0x04; |
538 |
clr_pwd = sd->data[0] & 0x02; |
539 |
set_pwd = sd->data[0] & 0x01; |
540 |
|
541 |
if (sd->blk_len > 1) |
542 |
pwd_len = sd->data[1];
|
543 |
else
|
544 |
pwd_len = 0;
|
545 |
|
546 |
if (erase) {
|
547 |
if (!(sd->card_status & CARD_IS_LOCKED) || sd->blk_len > 1 || |
548 |
set_pwd || clr_pwd || lock || sd->wp_switch || |
549 |
(sd->csd[14] & 0x20)) { |
550 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
551 |
return;
|
552 |
} |
553 |
memset(sd->wp_groups, 0, sizeof(int) * (sd->size >> |
554 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT))); |
555 |
sd->csd[14] &= ~0x10; |
556 |
sd->card_status &= ~CARD_IS_LOCKED; |
557 |
sd->pwd_len = 0;
|
558 |
/* Erasing the entire card here! */
|
559 |
fprintf(stderr, "SD: Card force-erased by CMD42\n");
|
560 |
return;
|
561 |
} |
562 |
|
563 |
if (sd->blk_len < 2 + pwd_len || |
564 |
pwd_len <= sd->pwd_len || |
565 |
pwd_len > sd->pwd_len + 16) {
|
566 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
567 |
return;
|
568 |
} |
569 |
|
570 |
if (sd->pwd_len && memcmp(sd->pwd, sd->data + 2, sd->pwd_len)) { |
571 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
572 |
return;
|
573 |
} |
574 |
|
575 |
pwd_len -= sd->pwd_len; |
576 |
if ((pwd_len && !set_pwd) ||
|
577 |
(clr_pwd && (set_pwd || lock)) || |
578 |
(lock && !sd->pwd_len && !set_pwd) || |
579 |
(!set_pwd && !clr_pwd && |
580 |
(((sd->card_status & CARD_IS_LOCKED) && lock) || |
581 |
(!(sd->card_status & CARD_IS_LOCKED) && !lock)))) { |
582 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
583 |
return;
|
584 |
} |
585 |
|
586 |
if (set_pwd) {
|
587 |
memcpy(sd->pwd, sd->data + 2 + sd->pwd_len, pwd_len);
|
588 |
sd->pwd_len = pwd_len; |
589 |
} |
590 |
|
591 |
if (clr_pwd) {
|
592 |
sd->pwd_len = 0;
|
593 |
} |
594 |
|
595 |
if (lock)
|
596 |
sd->card_status |= CARD_IS_LOCKED; |
597 |
else
|
598 |
sd->card_status &= ~CARD_IS_LOCKED; |
599 |
} |
600 |
|
601 |
static sd_rsp_type_t sd_normal_command(SDState *sd,
|
602 |
SDRequest req) |
603 |
{ |
604 |
uint32_t rca = 0x0000;
|
605 |
uint64_t addr = (sd->ocr & (1 << 30)) ? (uint64_t) req.arg << 9 : req.arg; |
606 |
|
607 |
if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc)
|
608 |
rca = req.arg >> 16;
|
609 |
|
610 |
DPRINTF("CMD%d 0x%08x state %d\n", req.cmd, req.arg, sd->state);
|
611 |
switch (req.cmd) {
|
612 |
/* Basic commands (Class 0 and Class 1) */
|
613 |
case 0: /* CMD0: GO_IDLE_STATE */ |
614 |
switch (sd->state) {
|
615 |
case sd_inactive_state:
|
616 |
return sd->spi ? sd_r1 : sd_r0;
|
617 |
|
618 |
default:
|
619 |
sd->state = sd_idle_state; |
620 |
sd_reset(sd, sd->bdrv); |
621 |
return sd->spi ? sd_r1 : sd_r0;
|
622 |
} |
623 |
break;
|
624 |
|
625 |
case 1: /* CMD1: SEND_OP_CMD */ |
626 |
if (!sd->spi)
|
627 |
goto bad_cmd;
|
628 |
|
629 |
sd->state = sd_transfer_state; |
630 |
return sd_r1;
|
631 |
|
632 |
case 2: /* CMD2: ALL_SEND_CID */ |
633 |
if (sd->spi)
|
634 |
goto bad_cmd;
|
635 |
switch (sd->state) {
|
636 |
case sd_ready_state:
|
637 |
sd->state = sd_identification_state; |
638 |
return sd_r2_i;
|
639 |
|
640 |
default:
|
641 |
break;
|
642 |
} |
643 |
break;
|
644 |
|
645 |
case 3: /* CMD3: SEND_RELATIVE_ADDR */ |
646 |
if (sd->spi)
|
647 |
goto bad_cmd;
|
648 |
switch (sd->state) {
|
649 |
case sd_identification_state:
|
650 |
case sd_standby_state:
|
651 |
sd->state = sd_standby_state; |
652 |
sd_set_rca(sd); |
653 |
return sd_r6;
|
654 |
|
655 |
default:
|
656 |
break;
|
657 |
} |
658 |
break;
|
659 |
|
660 |
case 4: /* CMD4: SEND_DSR */ |
661 |
if (sd->spi)
|
662 |
goto bad_cmd;
|
663 |
switch (sd->state) {
|
664 |
case sd_standby_state:
|
665 |
break;
|
666 |
|
667 |
default:
|
668 |
break;
|
669 |
} |
670 |
break;
|
671 |
|
672 |
case 5: /* CMD5: reserved for SDIO cards */ |
673 |
sd->card_status |= ILLEGAL_COMMAND; |
674 |
return sd_r0;
|
675 |
|
676 |
case 6: /* CMD6: SWITCH_FUNCTION */ |
677 |
if (sd->spi)
|
678 |
goto bad_cmd;
|
679 |
switch (sd->mode) {
|
680 |
case sd_data_transfer_mode:
|
681 |
sd_function_switch(sd, req.arg); |
682 |
sd->state = sd_sendingdata_state; |
683 |
sd->data_start = 0;
|
684 |
sd->data_offset = 0;
|
685 |
return sd_r1;
|
686 |
|
687 |
default:
|
688 |
break;
|
689 |
} |
690 |
break;
|
691 |
|
692 |
case 7: /* CMD7: SELECT/DESELECT_CARD */ |
693 |
if (sd->spi)
|
694 |
goto bad_cmd;
|
695 |
switch (sd->state) {
|
696 |
case sd_standby_state:
|
697 |
if (sd->rca != rca)
|
698 |
return sd_r0;
|
699 |
|
700 |
sd->state = sd_transfer_state; |
701 |
return sd_r1b;
|
702 |
|
703 |
case sd_transfer_state:
|
704 |
case sd_sendingdata_state:
|
705 |
if (sd->rca == rca)
|
706 |
break;
|
707 |
|
708 |
sd->state = sd_standby_state; |
709 |
return sd_r1b;
|
710 |
|
711 |
case sd_disconnect_state:
|
712 |
if (sd->rca != rca)
|
713 |
return sd_r0;
|
714 |
|
715 |
sd->state = sd_programming_state; |
716 |
return sd_r1b;
|
717 |
|
718 |
case sd_programming_state:
|
719 |
if (sd->rca == rca)
|
720 |
break;
|
721 |
|
722 |
sd->state = sd_disconnect_state; |
723 |
return sd_r1b;
|
724 |
|
725 |
default:
|
726 |
break;
|
727 |
} |
728 |
break;
|
729 |
|
730 |
case 8: /* CMD8: SEND_IF_COND */ |
731 |
/* Physical Layer Specification Version 2.00 command */
|
732 |
switch (sd->state) {
|
733 |
case sd_idle_state:
|
734 |
sd->vhs = 0;
|
735 |
|
736 |
/* No response if not exactly one VHS bit is set. */
|
737 |
if (!(req.arg >> 8) || (req.arg >> ffs(req.arg & ~0xff))) |
738 |
return sd->spi ? sd_r7 : sd_r0;
|
739 |
|
740 |
/* Accept. */
|
741 |
sd->vhs = req.arg; |
742 |
return sd_r7;
|
743 |
|
744 |
default:
|
745 |
break;
|
746 |
} |
747 |
break;
|
748 |
|
749 |
case 9: /* CMD9: SEND_CSD */ |
750 |
switch (sd->state) {
|
751 |
case sd_standby_state:
|
752 |
if (sd->rca != rca)
|
753 |
return sd_r0;
|
754 |
|
755 |
return sd_r2_s;
|
756 |
|
757 |
case sd_transfer_state:
|
758 |
if (!sd->spi)
|
759 |
break;
|
760 |
sd->state = sd_sendingdata_state; |
761 |
memcpy(sd->data, sd->csd, 16);
|
762 |
sd->data_start = addr; |
763 |
sd->data_offset = 0;
|
764 |
return sd_r1;
|
765 |
|
766 |
default:
|
767 |
break;
|
768 |
} |
769 |
break;
|
770 |
|
771 |
case 10: /* CMD10: SEND_CID */ |
772 |
switch (sd->state) {
|
773 |
case sd_standby_state:
|
774 |
if (sd->rca != rca)
|
775 |
return sd_r0;
|
776 |
|
777 |
return sd_r2_i;
|
778 |
|
779 |
case sd_transfer_state:
|
780 |
if (!sd->spi)
|
781 |
break;
|
782 |
sd->state = sd_sendingdata_state; |
783 |
memcpy(sd->data, sd->cid, 16);
|
784 |
sd->data_start = addr; |
785 |
sd->data_offset = 0;
|
786 |
return sd_r1;
|
787 |
|
788 |
default:
|
789 |
break;
|
790 |
} |
791 |
break;
|
792 |
|
793 |
case 11: /* CMD11: READ_DAT_UNTIL_STOP */ |
794 |
if (sd->spi)
|
795 |
goto bad_cmd;
|
796 |
switch (sd->state) {
|
797 |
case sd_transfer_state:
|
798 |
sd->state = sd_sendingdata_state; |
799 |
sd->data_start = req.arg; |
800 |
sd->data_offset = 0;
|
801 |
|
802 |
if (sd->data_start + sd->blk_len > sd->size)
|
803 |
sd->card_status |= ADDRESS_ERROR; |
804 |
return sd_r0;
|
805 |
|
806 |
default:
|
807 |
break;
|
808 |
} |
809 |
break;
|
810 |
|
811 |
case 12: /* CMD12: STOP_TRANSMISSION */ |
812 |
switch (sd->state) {
|
813 |
case sd_sendingdata_state:
|
814 |
sd->state = sd_transfer_state; |
815 |
return sd_r1b;
|
816 |
|
817 |
case sd_receivingdata_state:
|
818 |
sd->state = sd_programming_state; |
819 |
/* Bzzzzzzztt .... Operation complete. */
|
820 |
sd->state = sd_transfer_state; |
821 |
return sd_r1b;
|
822 |
|
823 |
default:
|
824 |
break;
|
825 |
} |
826 |
break;
|
827 |
|
828 |
case 13: /* CMD13: SEND_STATUS */ |
829 |
switch (sd->mode) {
|
830 |
case sd_data_transfer_mode:
|
831 |
if (sd->rca != rca)
|
832 |
return sd_r0;
|
833 |
|
834 |
return sd_r1;
|
835 |
|
836 |
default:
|
837 |
break;
|
838 |
} |
839 |
break;
|
840 |
|
841 |
case 15: /* CMD15: GO_INACTIVE_STATE */ |
842 |
if (sd->spi)
|
843 |
goto bad_cmd;
|
844 |
switch (sd->mode) {
|
845 |
case sd_data_transfer_mode:
|
846 |
if (sd->rca != rca)
|
847 |
return sd_r0;
|
848 |
|
849 |
sd->state = sd_inactive_state; |
850 |
return sd_r0;
|
851 |
|
852 |
default:
|
853 |
break;
|
854 |
} |
855 |
break;
|
856 |
|
857 |
/* Block read commands (Classs 2) */
|
858 |
case 16: /* CMD16: SET_BLOCKLEN */ |
859 |
switch (sd->state) {
|
860 |
case sd_transfer_state:
|
861 |
if (req.arg > (1 << HWBLOCK_SHIFT)) |
862 |
sd->card_status |= BLOCK_LEN_ERROR; |
863 |
else
|
864 |
sd->blk_len = req.arg; |
865 |
|
866 |
return sd_r1;
|
867 |
|
868 |
default:
|
869 |
break;
|
870 |
} |
871 |
break;
|
872 |
|
873 |
case 17: /* CMD17: READ_SINGLE_BLOCK */ |
874 |
switch (sd->state) {
|
875 |
case sd_transfer_state:
|
876 |
sd->state = sd_sendingdata_state; |
877 |
sd->data_start = addr; |
878 |
sd->data_offset = 0;
|
879 |
|
880 |
if (sd->data_start + sd->blk_len > sd->size)
|
881 |
sd->card_status |= ADDRESS_ERROR; |
882 |
return sd_r1;
|
883 |
|
884 |
default:
|
885 |
break;
|
886 |
} |
887 |
break;
|
888 |
|
889 |
case 18: /* CMD18: READ_MULTIPLE_BLOCK */ |
890 |
switch (sd->state) {
|
891 |
case sd_transfer_state:
|
892 |
sd->state = sd_sendingdata_state; |
893 |
sd->data_start = addr; |
894 |
sd->data_offset = 0;
|
895 |
|
896 |
if (sd->data_start + sd->blk_len > sd->size)
|
897 |
sd->card_status |= ADDRESS_ERROR; |
898 |
return sd_r1;
|
899 |
|
900 |
default:
|
901 |
break;
|
902 |
} |
903 |
break;
|
904 |
|
905 |
/* Block write commands (Class 4) */
|
906 |
case 24: /* CMD24: WRITE_SINGLE_BLOCK */ |
907 |
if (sd->spi)
|
908 |
goto unimplemented_cmd;
|
909 |
switch (sd->state) {
|
910 |
case sd_transfer_state:
|
911 |
/* Writing in SPI mode not implemented. */
|
912 |
if (sd->spi)
|
913 |
break;
|
914 |
sd->state = sd_receivingdata_state; |
915 |
sd->data_start = addr; |
916 |
sd->data_offset = 0;
|
917 |
sd->blk_written = 0;
|
918 |
|
919 |
if (sd->data_start + sd->blk_len > sd->size)
|
920 |
sd->card_status |= ADDRESS_ERROR; |
921 |
if (sd_wp_addr(sd, sd->data_start))
|
922 |
sd->card_status |= WP_VIOLATION; |
923 |
if (sd->csd[14] & 0x30) |
924 |
sd->card_status |= WP_VIOLATION; |
925 |
return sd_r1;
|
926 |
|
927 |
default:
|
928 |
break;
|
929 |
} |
930 |
break;
|
931 |
|
932 |
case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ |
933 |
if (sd->spi)
|
934 |
goto unimplemented_cmd;
|
935 |
switch (sd->state) {
|
936 |
case sd_transfer_state:
|
937 |
/* Writing in SPI mode not implemented. */
|
938 |
if (sd->spi)
|
939 |
break;
|
940 |
sd->state = sd_receivingdata_state; |
941 |
sd->data_start = addr; |
942 |
sd->data_offset = 0;
|
943 |
sd->blk_written = 0;
|
944 |
|
945 |
if (sd->data_start + sd->blk_len > sd->size)
|
946 |
sd->card_status |= ADDRESS_ERROR; |
947 |
if (sd_wp_addr(sd, sd->data_start))
|
948 |
sd->card_status |= WP_VIOLATION; |
949 |
if (sd->csd[14] & 0x30) |
950 |
sd->card_status |= WP_VIOLATION; |
951 |
return sd_r1;
|
952 |
|
953 |
default:
|
954 |
break;
|
955 |
} |
956 |
break;
|
957 |
|
958 |
case 26: /* CMD26: PROGRAM_CID */ |
959 |
if (sd->spi)
|
960 |
goto bad_cmd;
|
961 |
switch (sd->state) {
|
962 |
case sd_transfer_state:
|
963 |
sd->state = sd_receivingdata_state; |
964 |
sd->data_start = 0;
|
965 |
sd->data_offset = 0;
|
966 |
return sd_r1;
|
967 |
|
968 |
default:
|
969 |
break;
|
970 |
} |
971 |
break;
|
972 |
|
973 |
case 27: /* CMD27: PROGRAM_CSD */ |
974 |
if (sd->spi)
|
975 |
goto unimplemented_cmd;
|
976 |
switch (sd->state) {
|
977 |
case sd_transfer_state:
|
978 |
sd->state = sd_receivingdata_state; |
979 |
sd->data_start = 0;
|
980 |
sd->data_offset = 0;
|
981 |
return sd_r1;
|
982 |
|
983 |
default:
|
984 |
break;
|
985 |
} |
986 |
break;
|
987 |
|
988 |
/* Write protection (Class 6) */
|
989 |
case 28: /* CMD28: SET_WRITE_PROT */ |
990 |
switch (sd->state) {
|
991 |
case sd_transfer_state:
|
992 |
if (addr >= sd->size) {
|
993 |
sd->card_status = ADDRESS_ERROR; |
994 |
return sd_r1b;
|
995 |
} |
996 |
|
997 |
sd->state = sd_programming_state; |
998 |
sd->wp_groups[addr >> (HWBLOCK_SHIFT + |
999 |
SECTOR_SHIFT + WPGROUP_SHIFT)] = 1;
|
1000 |
/* Bzzzzzzztt .... Operation complete. */
|
1001 |
sd->state = sd_transfer_state; |
1002 |
return sd_r1b;
|
1003 |
|
1004 |
default:
|
1005 |
break;
|
1006 |
} |
1007 |
break;
|
1008 |
|
1009 |
case 29: /* CMD29: CLR_WRITE_PROT */ |
1010 |
switch (sd->state) {
|
1011 |
case sd_transfer_state:
|
1012 |
if (addr >= sd->size) {
|
1013 |
sd->card_status = ADDRESS_ERROR; |
1014 |
return sd_r1b;
|
1015 |
} |
1016 |
|
1017 |
sd->state = sd_programming_state; |
1018 |
sd->wp_groups[addr >> (HWBLOCK_SHIFT + |
1019 |
SECTOR_SHIFT + WPGROUP_SHIFT)] = 0;
|
1020 |
/* Bzzzzzzztt .... Operation complete. */
|
1021 |
sd->state = sd_transfer_state; |
1022 |
return sd_r1b;
|
1023 |
|
1024 |
default:
|
1025 |
break;
|
1026 |
} |
1027 |
break;
|
1028 |
|
1029 |
case 30: /* CMD30: SEND_WRITE_PROT */ |
1030 |
switch (sd->state) {
|
1031 |
case sd_transfer_state:
|
1032 |
sd->state = sd_sendingdata_state; |
1033 |
*(uint32_t *) sd->data = sd_wpbits(sd, req.arg); |
1034 |
sd->data_start = addr; |
1035 |
sd->data_offset = 0;
|
1036 |
return sd_r1b;
|
1037 |
|
1038 |
default:
|
1039 |
break;
|
1040 |
} |
1041 |
break;
|
1042 |
|
1043 |
/* Erase commands (Class 5) */
|
1044 |
case 32: /* CMD32: ERASE_WR_BLK_START */ |
1045 |
switch (sd->state) {
|
1046 |
case sd_transfer_state:
|
1047 |
sd->erase_start = req.arg; |
1048 |
return sd_r1;
|
1049 |
|
1050 |
default:
|
1051 |
break;
|
1052 |
} |
1053 |
break;
|
1054 |
|
1055 |
case 33: /* CMD33: ERASE_WR_BLK_END */ |
1056 |
switch (sd->state) {
|
1057 |
case sd_transfer_state:
|
1058 |
sd->erase_end = req.arg; |
1059 |
return sd_r1;
|
1060 |
|
1061 |
default:
|
1062 |
break;
|
1063 |
} |
1064 |
break;
|
1065 |
|
1066 |
case 38: /* CMD38: ERASE */ |
1067 |
switch (sd->state) {
|
1068 |
case sd_transfer_state:
|
1069 |
if (sd->csd[14] & 0x30) { |
1070 |
sd->card_status |= WP_VIOLATION; |
1071 |
return sd_r1b;
|
1072 |
} |
1073 |
|
1074 |
sd->state = sd_programming_state; |
1075 |
sd_erase(sd); |
1076 |
/* Bzzzzzzztt .... Operation complete. */
|
1077 |
sd->state = sd_transfer_state; |
1078 |
return sd_r1b;
|
1079 |
|
1080 |
default:
|
1081 |
break;
|
1082 |
} |
1083 |
break;
|
1084 |
|
1085 |
/* Lock card commands (Class 7) */
|
1086 |
case 42: /* CMD42: LOCK_UNLOCK */ |
1087 |
if (sd->spi)
|
1088 |
goto unimplemented_cmd;
|
1089 |
switch (sd->state) {
|
1090 |
case sd_transfer_state:
|
1091 |
sd->state = sd_receivingdata_state; |
1092 |
sd->data_start = 0;
|
1093 |
sd->data_offset = 0;
|
1094 |
return sd_r1;
|
1095 |
|
1096 |
default:
|
1097 |
break;
|
1098 |
} |
1099 |
break;
|
1100 |
|
1101 |
/* Application specific commands (Class 8) */
|
1102 |
case 55: /* CMD55: APP_CMD */ |
1103 |
if (sd->rca != rca)
|
1104 |
return sd_r0;
|
1105 |
|
1106 |
sd->card_status |= APP_CMD; |
1107 |
return sd_r1;
|
1108 |
|
1109 |
case 56: /* CMD56: GEN_CMD */ |
1110 |
fprintf(stderr, "SD: GEN_CMD 0x%08x\n", req.arg);
|
1111 |
|
1112 |
switch (sd->state) {
|
1113 |
case sd_transfer_state:
|
1114 |
sd->data_offset = 0;
|
1115 |
if (req.arg & 1) |
1116 |
sd->state = sd_sendingdata_state; |
1117 |
else
|
1118 |
sd->state = sd_receivingdata_state; |
1119 |
return sd_r1;
|
1120 |
|
1121 |
default:
|
1122 |
break;
|
1123 |
} |
1124 |
break;
|
1125 |
|
1126 |
default:
|
1127 |
bad_cmd:
|
1128 |
sd->card_status |= ILLEGAL_COMMAND; |
1129 |
|
1130 |
fprintf(stderr, "SD: Unknown CMD%i\n", req.cmd);
|
1131 |
return sd_r0;
|
1132 |
|
1133 |
unimplemented_cmd:
|
1134 |
/* Commands that are recognised but not yet implemented in SPI mode. */
|
1135 |
sd->card_status |= ILLEGAL_COMMAND; |
1136 |
fprintf(stderr, "SD: CMD%i not implemented in SPI mode\n", req.cmd);
|
1137 |
return sd_r0;
|
1138 |
} |
1139 |
|
1140 |
sd->card_status |= ILLEGAL_COMMAND; |
1141 |
fprintf(stderr, "SD: CMD%i in a wrong state\n", req.cmd);
|
1142 |
return sd_r0;
|
1143 |
} |
1144 |
|
1145 |
static sd_rsp_type_t sd_app_command(SDState *sd,
|
1146 |
SDRequest req) |
1147 |
{ |
1148 |
DPRINTF("ACMD%d 0x%08x\n", req.cmd, req.arg);
|
1149 |
switch (req.cmd) {
|
1150 |
case 6: /* ACMD6: SET_BUS_WIDTH */ |
1151 |
switch (sd->state) {
|
1152 |
case sd_transfer_state:
|
1153 |
sd->sd_status[0] &= 0x3f; |
1154 |
sd->sd_status[0] |= (req.arg & 0x03) << 6; |
1155 |
return sd_r1;
|
1156 |
|
1157 |
default:
|
1158 |
break;
|
1159 |
} |
1160 |
break;
|
1161 |
|
1162 |
case 13: /* ACMD13: SD_STATUS */ |
1163 |
switch (sd->state) {
|
1164 |
case sd_transfer_state:
|
1165 |
sd->data_start = 0;
|
1166 |
sd->data_offset = 0;
|
1167 |
return sd_r1;
|
1168 |
|
1169 |
default:
|
1170 |
break;
|
1171 |
} |
1172 |
break;
|
1173 |
|
1174 |
case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ |
1175 |
switch (sd->state) {
|
1176 |
case sd_transfer_state:
|
1177 |
*(uint32_t *) sd->data = sd->blk_written; |
1178 |
|
1179 |
sd->data_start = 0;
|
1180 |
sd->data_offset = 0;
|
1181 |
return sd_r1;
|
1182 |
|
1183 |
default:
|
1184 |
break;
|
1185 |
} |
1186 |
break;
|
1187 |
|
1188 |
case 23: /* ACMD23: SET_WR_BLK_ERASE_COUNT */ |
1189 |
switch (sd->state) {
|
1190 |
case sd_transfer_state:
|
1191 |
return sd_r1;
|
1192 |
|
1193 |
default:
|
1194 |
break;
|
1195 |
} |
1196 |
break;
|
1197 |
|
1198 |
case 41: /* ACMD41: SD_APP_OP_COND */ |
1199 |
if (sd->spi) {
|
1200 |
/* SEND_OP_CMD */
|
1201 |
sd->state = sd_transfer_state; |
1202 |
return sd_r1;
|
1203 |
} |
1204 |
switch (sd->state) {
|
1205 |
case sd_idle_state:
|
1206 |
/* We accept any voltage. 10000 V is nothing. */
|
1207 |
if (req.arg)
|
1208 |
sd->state = sd_ready_state; |
1209 |
|
1210 |
return sd_r3;
|
1211 |
|
1212 |
default:
|
1213 |
break;
|
1214 |
} |
1215 |
break;
|
1216 |
|
1217 |
case 42: /* ACMD42: SET_CLR_CARD_DETECT */ |
1218 |
switch (sd->state) {
|
1219 |
case sd_transfer_state:
|
1220 |
/* Bringing in the 50KOhm pull-up resistor... Done. */
|
1221 |
return sd_r1;
|
1222 |
|
1223 |
default:
|
1224 |
break;
|
1225 |
} |
1226 |
break;
|
1227 |
|
1228 |
case 51: /* ACMD51: SEND_SCR */ |
1229 |
switch (sd->state) {
|
1230 |
case sd_transfer_state:
|
1231 |
sd->state = sd_sendingdata_state; |
1232 |
sd->data_start = 0;
|
1233 |
sd->data_offset = 0;
|
1234 |
return sd_r1;
|
1235 |
|
1236 |
default:
|
1237 |
break;
|
1238 |
} |
1239 |
break;
|
1240 |
|
1241 |
default:
|
1242 |
/* Fall back to standard commands. */
|
1243 |
sd->card_status &= ~APP_CMD; |
1244 |
return sd_normal_command(sd, req);
|
1245 |
} |
1246 |
|
1247 |
fprintf(stderr, "SD: ACMD%i in a wrong state\n", req.cmd);
|
1248 |
return sd_r0;
|
1249 |
} |
1250 |
|
1251 |
int sd_do_command(SDState *sd, SDRequest *req,
|
1252 |
uint8_t *response) { |
1253 |
uint32_t last_status = sd->card_status; |
1254 |
sd_rsp_type_t rtype; |
1255 |
int rsplen;
|
1256 |
|
1257 |
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable) {
|
1258 |
return 0; |
1259 |
} |
1260 |
|
1261 |
if (sd_req_crc_validate(req)) {
|
1262 |
sd->card_status &= ~COM_CRC_ERROR; |
1263 |
return 0; |
1264 |
} |
1265 |
|
1266 |
sd->card_status &= ~CARD_STATUS_B; |
1267 |
sd_set_status(sd); |
1268 |
|
1269 |
if (last_status & CARD_IS_LOCKED)
|
1270 |
if (((last_status & APP_CMD) &&
|
1271 |
req->cmd == 41) ||
|
1272 |
(!(last_status & APP_CMD) && |
1273 |
(sd_cmd_class[req->cmd] == 0 ||
|
1274 |
sd_cmd_class[req->cmd] == 7 ||
|
1275 |
req->cmd == 16 || req->cmd == 55))) { |
1276 |
sd->card_status |= ILLEGAL_COMMAND; |
1277 |
fprintf(stderr, "SD: Card is locked\n");
|
1278 |
return 0; |
1279 |
} |
1280 |
|
1281 |
if (last_status & APP_CMD) {
|
1282 |
rtype = sd_app_command(sd, *req); |
1283 |
sd->card_status &= ~APP_CMD; |
1284 |
} else
|
1285 |
rtype = sd_normal_command(sd, *req); |
1286 |
|
1287 |
sd->current_cmd = req->cmd; |
1288 |
|
1289 |
switch (rtype) {
|
1290 |
case sd_r1:
|
1291 |
case sd_r1b:
|
1292 |
sd_response_r1_make(sd, response, last_status); |
1293 |
rsplen = 4;
|
1294 |
break;
|
1295 |
|
1296 |
case sd_r2_i:
|
1297 |
memcpy(response, sd->cid, sizeof(sd->cid));
|
1298 |
rsplen = 16;
|
1299 |
break;
|
1300 |
|
1301 |
case sd_r2_s:
|
1302 |
memcpy(response, sd->csd, sizeof(sd->csd));
|
1303 |
rsplen = 16;
|
1304 |
break;
|
1305 |
|
1306 |
case sd_r3:
|
1307 |
sd_response_r3_make(sd, response); |
1308 |
rsplen = 4;
|
1309 |
break;
|
1310 |
|
1311 |
case sd_r6:
|
1312 |
sd_response_r6_make(sd, response); |
1313 |
rsplen = 4;
|
1314 |
break;
|
1315 |
|
1316 |
case sd_r7:
|
1317 |
sd_response_r7_make(sd, response); |
1318 |
rsplen = 4;
|
1319 |
break;
|
1320 |
|
1321 |
case sd_r0:
|
1322 |
default:
|
1323 |
rsplen = 0;
|
1324 |
break;
|
1325 |
} |
1326 |
|
1327 |
if (sd->card_status & ILLEGAL_COMMAND)
|
1328 |
rsplen = 0;
|
1329 |
|
1330 |
#ifdef DEBUG_SD
|
1331 |
if (rsplen) {
|
1332 |
int i;
|
1333 |
DPRINTF("Response:");
|
1334 |
for (i = 0; i < rsplen; i++) |
1335 |
printf(" %02x", response[i]);
|
1336 |
printf(" state %d\n", sd->state);
|
1337 |
} else {
|
1338 |
DPRINTF("No response %d\n", sd->state);
|
1339 |
} |
1340 |
#endif
|
1341 |
|
1342 |
return rsplen;
|
1343 |
} |
1344 |
|
1345 |
static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len) |
1346 |
{ |
1347 |
uint64_t end = addr + len; |
1348 |
|
1349 |
DPRINTF("sd_blk_read: addr = 0x%08llx, len = %d\n",
|
1350 |
(unsigned long long) addr, len); |
1351 |
if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) == -1) { |
1352 |
fprintf(stderr, "sd_blk_read: read error on host side\n");
|
1353 |
return;
|
1354 |
} |
1355 |
|
1356 |
if (end > (addr & ~511) + 512) { |
1357 |
memcpy(sd->data, sd->buf + (addr & 511), 512 - (addr & 511)); |
1358 |
|
1359 |
if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) == -1) { |
1360 |
fprintf(stderr, "sd_blk_read: read error on host side\n");
|
1361 |
return;
|
1362 |
} |
1363 |
memcpy(sd->data + 512 - (addr & 511), sd->buf, end & 511); |
1364 |
} else
|
1365 |
memcpy(sd->data, sd->buf + (addr & 511), len);
|
1366 |
} |
1367 |
|
1368 |
static void sd_blk_write(SDState *sd, uint64_t addr, uint32_t len) |
1369 |
{ |
1370 |
uint64_t end = addr + len; |
1371 |
|
1372 |
if ((addr & 511) || len < 512) |
1373 |
if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) == -1) { |
1374 |
fprintf(stderr, "sd_blk_write: read error on host side\n");
|
1375 |
return;
|
1376 |
} |
1377 |
|
1378 |
if (end > (addr & ~511) + 512) { |
1379 |
memcpy(sd->buf + (addr & 511), sd->data, 512 - (addr & 511)); |
1380 |
if (bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) == -1) { |
1381 |
fprintf(stderr, "sd_blk_write: write error on host side\n");
|
1382 |
return;
|
1383 |
} |
1384 |
|
1385 |
if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) == -1) { |
1386 |
fprintf(stderr, "sd_blk_write: read error on host side\n");
|
1387 |
return;
|
1388 |
} |
1389 |
memcpy(sd->buf, sd->data + 512 - (addr & 511), end & 511); |
1390 |
if (bdrv_write(sd->bdrv, end >> 9, sd->buf, 1) == -1) |
1391 |
fprintf(stderr, "sd_blk_write: write error on host side\n");
|
1392 |
} else {
|
1393 |
memcpy(sd->buf + (addr & 511), sd->data, len);
|
1394 |
if (!sd->bdrv || bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) == -1) |
1395 |
fprintf(stderr, "sd_blk_write: write error on host side\n");
|
1396 |
} |
1397 |
} |
1398 |
|
1399 |
#define BLK_READ_BLOCK(a, len) sd_blk_read(sd, a, len)
|
1400 |
#define BLK_WRITE_BLOCK(a, len) sd_blk_write(sd, a, len)
|
1401 |
#define APP_READ_BLOCK(a, len) memset(sd->data, 0xec, len) |
1402 |
#define APP_WRITE_BLOCK(a, len)
|
1403 |
|
1404 |
void sd_write_data(SDState *sd, uint8_t value)
|
1405 |
{ |
1406 |
int i;
|
1407 |
|
1408 |
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable)
|
1409 |
return;
|
1410 |
|
1411 |
if (sd->state != sd_receivingdata_state) {
|
1412 |
fprintf(stderr, "sd_write_data: not in Receiving-Data state\n");
|
1413 |
return;
|
1414 |
} |
1415 |
|
1416 |
if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
|
1417 |
return;
|
1418 |
|
1419 |
switch (sd->current_cmd) {
|
1420 |
case 24: /* CMD24: WRITE_SINGLE_BLOCK */ |
1421 |
sd->data[sd->data_offset ++] = value; |
1422 |
if (sd->data_offset >= sd->blk_len) {
|
1423 |
/* TODO: Check CRC before committing */
|
1424 |
sd->state = sd_programming_state; |
1425 |
BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); |
1426 |
sd->blk_written ++; |
1427 |
sd->csd[14] |= 0x40; |
1428 |
/* Bzzzzzzztt .... Operation complete. */
|
1429 |
sd->state = sd_transfer_state; |
1430 |
} |
1431 |
break;
|
1432 |
|
1433 |
case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ |
1434 |
sd->data[sd->data_offset ++] = value; |
1435 |
if (sd->data_offset >= sd->blk_len) {
|
1436 |
/* TODO: Check CRC before committing */
|
1437 |
sd->state = sd_programming_state; |
1438 |
BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); |
1439 |
sd->blk_written ++; |
1440 |
sd->data_start += sd->blk_len; |
1441 |
sd->data_offset = 0;
|
1442 |
if (sd->data_start + sd->blk_len > sd->size) {
|
1443 |
sd->card_status |= ADDRESS_ERROR; |
1444 |
break;
|
1445 |
} |
1446 |
if (sd_wp_addr(sd, sd->data_start)) {
|
1447 |
sd->card_status |= WP_VIOLATION; |
1448 |
break;
|
1449 |
} |
1450 |
sd->csd[14] |= 0x40; |
1451 |
|
1452 |
/* Bzzzzzzztt .... Operation complete. */
|
1453 |
sd->state = sd_receivingdata_state; |
1454 |
} |
1455 |
break;
|
1456 |
|
1457 |
case 26: /* CMD26: PROGRAM_CID */ |
1458 |
sd->data[sd->data_offset ++] = value; |
1459 |
if (sd->data_offset >= sizeof(sd->cid)) { |
1460 |
/* TODO: Check CRC before committing */
|
1461 |
sd->state = sd_programming_state; |
1462 |
for (i = 0; i < sizeof(sd->cid); i ++) |
1463 |
if ((sd->cid[i] | 0x00) != sd->data[i]) |
1464 |
sd->card_status |= CID_CSD_OVERWRITE; |
1465 |
|
1466 |
if (!(sd->card_status & CID_CSD_OVERWRITE))
|
1467 |
for (i = 0; i < sizeof(sd->cid); i ++) { |
1468 |
sd->cid[i] |= 0x00;
|
1469 |
sd->cid[i] &= sd->data[i]; |
1470 |
} |
1471 |
/* Bzzzzzzztt .... Operation complete. */
|
1472 |
sd->state = sd_transfer_state; |
1473 |
} |
1474 |
break;
|
1475 |
|
1476 |
case 27: /* CMD27: PROGRAM_CSD */ |
1477 |
sd->data[sd->data_offset ++] = value; |
1478 |
if (sd->data_offset >= sizeof(sd->csd)) { |
1479 |
/* TODO: Check CRC before committing */
|
1480 |
sd->state = sd_programming_state; |
1481 |
for (i = 0; i < sizeof(sd->csd); i ++) |
1482 |
if ((sd->csd[i] | sd_csd_rw_mask[i]) !=
|
1483 |
(sd->data[i] | sd_csd_rw_mask[i])) |
1484 |
sd->card_status |= CID_CSD_OVERWRITE; |
1485 |
|
1486 |
/* Copy flag (OTP) & Permanent write protect */
|
1487 |
if (sd->csd[14] & ~sd->data[14] & 0x60) |
1488 |
sd->card_status |= CID_CSD_OVERWRITE; |
1489 |
|
1490 |
if (!(sd->card_status & CID_CSD_OVERWRITE))
|
1491 |
for (i = 0; i < sizeof(sd->csd); i ++) { |
1492 |
sd->csd[i] |= sd_csd_rw_mask[i]; |
1493 |
sd->csd[i] &= sd->data[i]; |
1494 |
} |
1495 |
/* Bzzzzzzztt .... Operation complete. */
|
1496 |
sd->state = sd_transfer_state; |
1497 |
} |
1498 |
break;
|
1499 |
|
1500 |
case 42: /* CMD42: LOCK_UNLOCK */ |
1501 |
sd->data[sd->data_offset ++] = value; |
1502 |
if (sd->data_offset >= sd->blk_len) {
|
1503 |
/* TODO: Check CRC before committing */
|
1504 |
sd->state = sd_programming_state; |
1505 |
sd_lock_command(sd); |
1506 |
/* Bzzzzzzztt .... Operation complete. */
|
1507 |
sd->state = sd_transfer_state; |
1508 |
} |
1509 |
break;
|
1510 |
|
1511 |
case 56: /* CMD56: GEN_CMD */ |
1512 |
sd->data[sd->data_offset ++] = value; |
1513 |
if (sd->data_offset >= sd->blk_len) {
|
1514 |
APP_WRITE_BLOCK(sd->data_start, sd->data_offset); |
1515 |
sd->state = sd_transfer_state; |
1516 |
} |
1517 |
break;
|
1518 |
|
1519 |
default:
|
1520 |
fprintf(stderr, "sd_write_data: unknown command\n");
|
1521 |
break;
|
1522 |
} |
1523 |
} |
1524 |
|
1525 |
uint8_t sd_read_data(SDState *sd) |
1526 |
{ |
1527 |
/* TODO: Append CRCs */
|
1528 |
uint8_t ret; |
1529 |
int io_len;
|
1530 |
|
1531 |
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable)
|
1532 |
return 0x00; |
1533 |
|
1534 |
if (sd->state != sd_sendingdata_state) {
|
1535 |
fprintf(stderr, "sd_read_data: not in Sending-Data state\n");
|
1536 |
return 0x00; |
1537 |
} |
1538 |
|
1539 |
if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
|
1540 |
return 0x00; |
1541 |
|
1542 |
io_len = (sd->ocr & (1 << 30)) ? 512 : sd->blk_len; |
1543 |
|
1544 |
switch (sd->current_cmd) {
|
1545 |
case 6: /* CMD6: SWITCH_FUNCTION */ |
1546 |
ret = sd->data[sd->data_offset ++]; |
1547 |
|
1548 |
if (sd->data_offset >= 64) |
1549 |
sd->state = sd_transfer_state; |
1550 |
break;
|
1551 |
|
1552 |
case 9: /* CMD9: SEND_CSD */ |
1553 |
case 10: /* CMD10: SEND_CID */ |
1554 |
ret = sd->data[sd->data_offset ++]; |
1555 |
|
1556 |
if (sd->data_offset >= 16) |
1557 |
sd->state = sd_transfer_state; |
1558 |
break;
|
1559 |
|
1560 |
case 11: /* CMD11: READ_DAT_UNTIL_STOP */ |
1561 |
if (sd->data_offset == 0) |
1562 |
BLK_READ_BLOCK(sd->data_start, io_len); |
1563 |
ret = sd->data[sd->data_offset ++]; |
1564 |
|
1565 |
if (sd->data_offset >= io_len) {
|
1566 |
sd->data_start += io_len; |
1567 |
sd->data_offset = 0;
|
1568 |
if (sd->data_start + io_len > sd->size) {
|
1569 |
sd->card_status |= ADDRESS_ERROR; |
1570 |
break;
|
1571 |
} |
1572 |
} |
1573 |
break;
|
1574 |
|
1575 |
case 13: /* ACMD13: SD_STATUS */ |
1576 |
ret = sd->sd_status[sd->data_offset ++]; |
1577 |
|
1578 |
if (sd->data_offset >= sizeof(sd->sd_status)) |
1579 |
sd->state = sd_transfer_state; |
1580 |
break;
|
1581 |
|
1582 |
case 17: /* CMD17: READ_SINGLE_BLOCK */ |
1583 |
if (sd->data_offset == 0) |
1584 |
BLK_READ_BLOCK(sd->data_start, io_len); |
1585 |
ret = sd->data[sd->data_offset ++]; |
1586 |
|
1587 |
if (sd->data_offset >= io_len)
|
1588 |
sd->state = sd_transfer_state; |
1589 |
break;
|
1590 |
|
1591 |
case 18: /* CMD18: READ_MULTIPLE_BLOCK */ |
1592 |
if (sd->data_offset == 0) |
1593 |
BLK_READ_BLOCK(sd->data_start, io_len); |
1594 |
ret = sd->data[sd->data_offset ++]; |
1595 |
|
1596 |
if (sd->data_offset >= io_len) {
|
1597 |
sd->data_start += io_len; |
1598 |
sd->data_offset = 0;
|
1599 |
if (sd->data_start + io_len > sd->size) {
|
1600 |
sd->card_status |= ADDRESS_ERROR; |
1601 |
break;
|
1602 |
} |
1603 |
} |
1604 |
break;
|
1605 |
|
1606 |
case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ |
1607 |
ret = sd->data[sd->data_offset ++]; |
1608 |
|
1609 |
if (sd->data_offset >= 4) |
1610 |
sd->state = sd_transfer_state; |
1611 |
break;
|
1612 |
|
1613 |
case 30: /* CMD30: SEND_WRITE_PROT */ |
1614 |
ret = sd->data[sd->data_offset ++]; |
1615 |
|
1616 |
if (sd->data_offset >= 4) |
1617 |
sd->state = sd_transfer_state; |
1618 |
break;
|
1619 |
|
1620 |
case 51: /* ACMD51: SEND_SCR */ |
1621 |
ret = sd->scr[sd->data_offset ++]; |
1622 |
|
1623 |
if (sd->data_offset >= sizeof(sd->scr)) |
1624 |
sd->state = sd_transfer_state; |
1625 |
break;
|
1626 |
|
1627 |
case 56: /* CMD56: GEN_CMD */ |
1628 |
if (sd->data_offset == 0) |
1629 |
APP_READ_BLOCK(sd->data_start, sd->blk_len); |
1630 |
ret = sd->data[sd->data_offset ++]; |
1631 |
|
1632 |
if (sd->data_offset >= sd->blk_len)
|
1633 |
sd->state = sd_transfer_state; |
1634 |
break;
|
1635 |
|
1636 |
default:
|
1637 |
fprintf(stderr, "sd_read_data: unknown command\n");
|
1638 |
return 0x00; |
1639 |
} |
1640 |
|
1641 |
return ret;
|
1642 |
} |
1643 |
|
1644 |
int sd_data_ready(SDState *sd)
|
1645 |
{ |
1646 |
return sd->state == sd_sendingdata_state;
|
1647 |
} |
1648 |
|
1649 |
void sd_enable(SDState *sd, int enable) |
1650 |
{ |
1651 |
sd->enable = enable; |
1652 |
} |