1765 lines
48 KiB
C
1765 lines
48 KiB
C
/*
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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/block.h"
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#include "sd.h"
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#include "qemu/bitmap.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_illegal = -2,
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} sd_rsp_type_t;
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enum SDCardModes {
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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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};
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enum SDCardStates {
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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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};
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struct SDState {
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uint32_t mode; /* current card mode, one of SDCardModes */
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int32_t state; /* current card state, one of SDCardStates */
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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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bool wp_switch;
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unsigned long *wp_groups;
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int32_t wpgrps_size;
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uint64_t size;
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uint32_t 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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uint32_t pwd_len;
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uint8_t function_group[6];
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bool spi;
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uint8_t current_cmd;
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/* True if we will handle the next command as an ACMD. Note that this does
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* *not* track the APP_CMD status bit!
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*/
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bool expecting_acmd;
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uint32_t 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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bool enable;
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};
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static void sd_set_mode(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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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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}
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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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#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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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;
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sd->csd[13] = 0x40;
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sd->csd[14] = 0x00;
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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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}
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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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}
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/* Card status bits, split by clear condition:
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* A : According to the card current state
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* B : Always related to the previous command
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* C : Cleared by read
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*/
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#define CARD_STATUS_A 0x02004100
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#define CARD_STATUS_B 0x00c01e00
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#define CARD_STATUS_C 0xfd39a028
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static void sd_set_cardstatus(SDState *sd)
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{
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sd->card_status = 0x00000100;
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}
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static void sd_set_sdstatus(SDState *sd)
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{
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memset(sd->sd_status, 0, 64);
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}
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static int sd_req_crc_validate(SDRequest *req)
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{
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uint8_t buffer[5];
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buffer[0] = 0x40 | req->cmd;
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buffer[1] = (req->arg >> 24) & 0xff;
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buffer[2] = (req->arg >> 16) & 0xff;
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buffer[3] = (req->arg >> 8) & 0xff;
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buffer[4] = (req->arg >> 0) & 0xff;
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return 0;
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return sd_crc7(buffer, 5) != req->crc; /* TODO */
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}
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static void sd_response_r1_make(SDState *sd, uint8_t *response)
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{
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uint32_t status = sd->card_status;
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/* Clear the "clear on read" status bits */
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sd->card_status &= ~CARD_STATUS_C;
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response[0] = (status >> 24) & 0xff;
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response[1] = (status >> 16) & 0xff;
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response[2] = (status >> 8) & 0xff;
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response[3] = (status >> 0) & 0xff;
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}
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static void sd_response_r3_make(SDState *sd, uint8_t *response)
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{
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response[0] = (sd->ocr >> 24) & 0xff;
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response[1] = (sd->ocr >> 16) & 0xff;
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response[2] = (sd->ocr >> 8) & 0xff;
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response[3] = (sd->ocr >> 0) & 0xff;
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}
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static void sd_response_r6_make(SDState *sd, uint8_t *response)
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{
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uint16_t arg;
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uint16_t status;
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arg = sd->rca;
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status = ((sd->card_status >> 8) & 0xc000) |
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((sd->card_status >> 6) & 0x2000) |
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(sd->card_status & 0x1fff);
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sd->card_status &= ~(CARD_STATUS_C & 0xc81fff);
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response[0] = (arg >> 8) & 0xff;
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response[1] = arg & 0xff;
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response[2] = (status >> 8) & 0xff;
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response[3] = status & 0xff;
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}
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static void sd_response_r7_make(SDState *sd, uint8_t *response)
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{
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response[0] = (sd->vhs >> 24) & 0xff;
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response[1] = (sd->vhs >> 16) & 0xff;
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response[2] = (sd->vhs >> 8) & 0xff;
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response[3] = (sd->vhs >> 0) & 0xff;
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}
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static inline uint64_t sd_addr_to_wpnum(uint64_t addr)
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{
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return addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT);
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}
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static void sd_reset(SDState *sd, BlockDriverState *bdrv)
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{
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uint64_t size;
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uint64_t sect;
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if (bdrv) {
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bdrv_get_geometry(bdrv, §);
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} else {
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sect = 0;
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}
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size = sect << 9;
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sect = sd_addr_to_wpnum(size) + 1;
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sd->state = sd_idle_state;
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sd->rca = 0x0000;
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sd_set_ocr(sd);
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sd_set_scr(sd);
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sd_set_cid(sd);
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sd_set_csd(sd, size);
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sd_set_cardstatus(sd);
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sd_set_sdstatus(sd);
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sd->bdrv = bdrv;
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if (sd->wp_groups)
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g_free(sd->wp_groups);
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sd->wp_switch = bdrv ? bdrv_is_read_only(bdrv) : false;
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sd->wpgrps_size = sect;
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sd->wp_groups = bitmap_new(sd->wpgrps_size);
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memset(sd->function_group, 0, sizeof(sd->function_group));
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sd->erase_start = 0;
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sd->erase_end = 0;
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sd->size = size;
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sd->blk_len = 0x200;
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sd->pwd_len = 0;
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sd->expecting_acmd = false;
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}
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static void sd_cardchange(void *opaque, bool load)
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{
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SDState *sd = opaque;
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qemu_set_irq(sd->inserted_cb, bdrv_is_inserted(sd->bdrv));
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if (bdrv_is_inserted(sd->bdrv)) {
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sd_reset(sd, sd->bdrv);
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qemu_set_irq(sd->readonly_cb, sd->wp_switch);
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}
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}
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|
|
static const BlockDevOps sd_block_ops = {
|
|
.change_media_cb = sd_cardchange,
|
|
};
|
|
|
|
static const VMStateDescription sd_vmstate = {
|
|
.name = "sd-card",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_UINT32(mode, SDState),
|
|
VMSTATE_INT32(state, SDState),
|
|
VMSTATE_UINT8_ARRAY(cid, SDState, 16),
|
|
VMSTATE_UINT8_ARRAY(csd, SDState, 16),
|
|
VMSTATE_UINT16(rca, SDState),
|
|
VMSTATE_UINT32(card_status, SDState),
|
|
VMSTATE_PARTIAL_BUFFER(sd_status, SDState, 1),
|
|
VMSTATE_UINT32(vhs, SDState),
|
|
VMSTATE_BITMAP(wp_groups, SDState, 0, wpgrps_size),
|
|
VMSTATE_UINT32(blk_len, SDState),
|
|
VMSTATE_UINT32(erase_start, SDState),
|
|
VMSTATE_UINT32(erase_end, SDState),
|
|
VMSTATE_UINT8_ARRAY(pwd, SDState, 16),
|
|
VMSTATE_UINT32(pwd_len, SDState),
|
|
VMSTATE_UINT8_ARRAY(function_group, SDState, 6),
|
|
VMSTATE_UINT8(current_cmd, SDState),
|
|
VMSTATE_BOOL(expecting_acmd, SDState),
|
|
VMSTATE_UINT32(blk_written, SDState),
|
|
VMSTATE_UINT64(data_start, SDState),
|
|
VMSTATE_UINT32(data_offset, SDState),
|
|
VMSTATE_UINT8_ARRAY(data, SDState, 512),
|
|
VMSTATE_BUFFER_UNSAFE(buf, SDState, 1, 512),
|
|
VMSTATE_BOOL(enable, SDState),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
/* We do not model the chip select pin, so allow the board to select
|
|
whether card should be in SSI or MMC/SD mode. It is also up to the
|
|
board to ensure that ssi transfers only occur when the chip select
|
|
is asserted. */
|
|
SDState *sd_init(BlockDriverState *bs, bool is_spi)
|
|
{
|
|
SDState *sd;
|
|
|
|
sd = (SDState *) g_malloc0(sizeof(SDState));
|
|
sd->buf = qemu_blockalign(bs, 512);
|
|
sd->spi = is_spi;
|
|
sd->enable = true;
|
|
sd_reset(sd, bs);
|
|
if (sd->bdrv) {
|
|
bdrv_attach_dev_nofail(sd->bdrv, sd);
|
|
bdrv_set_dev_ops(sd->bdrv, &sd_block_ops, sd);
|
|
}
|
|
vmstate_register(NULL, -1, &sd_vmstate, sd);
|
|
return sd;
|
|
}
|
|
|
|
void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert)
|
|
{
|
|
sd->readonly_cb = readonly;
|
|
sd->inserted_cb = insert;
|
|
qemu_set_irq(readonly, sd->bdrv ? bdrv_is_read_only(sd->bdrv) : 0);
|
|
qemu_set_irq(insert, sd->bdrv ? bdrv_is_inserted(sd->bdrv) : 0);
|
|
}
|
|
|
|
static void sd_erase(SDState *sd)
|
|
{
|
|
int i;
|
|
uint64_t erase_start = sd->erase_start;
|
|
uint64_t erase_end = sd->erase_end;
|
|
|
|
if (!sd->erase_start || !sd->erase_end) {
|
|
sd->card_status |= ERASE_SEQ_ERROR;
|
|
return;
|
|
}
|
|
|
|
if (extract32(sd->ocr, OCR_CCS_BITN, 1)) {
|
|
/* High capacity memory card: erase units are 512 byte blocks */
|
|
erase_start *= 512;
|
|
erase_end *= 512;
|
|
}
|
|
|
|
erase_start = sd_addr_to_wpnum(erase_start);
|
|
erase_end = sd_addr_to_wpnum(erase_end);
|
|
sd->erase_start = 0;
|
|
sd->erase_end = 0;
|
|
sd->csd[14] |= 0x40;
|
|
|
|
for (i = erase_start; i <= erase_end; i++) {
|
|
if (test_bit(i, sd->wp_groups)) {
|
|
sd->card_status |= WP_ERASE_SKIP;
|
|
}
|
|
}
|
|
}
|
|
|
|
static uint32_t sd_wpbits(SDState *sd, uint64_t addr)
|
|
{
|
|
uint32_t i, wpnum;
|
|
uint32_t ret = 0;
|
|
|
|
wpnum = sd_addr_to_wpnum(addr);
|
|
|
|
for (i = 0; i < 32; i++, wpnum++, addr += WPGROUP_SIZE) {
|
|
if (addr < sd->size && test_bit(wpnum, sd->wp_groups)) {
|
|
ret |= (1 << i);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void sd_function_switch(SDState *sd, uint32_t arg)
|
|
{
|
|
int i, mode, new_func, crc;
|
|
mode = !!(arg & 0x80000000);
|
|
|
|
sd->data[0] = 0x00; /* Maximum current consumption */
|
|
sd->data[1] = 0x01;
|
|
sd->data[2] = 0x80; /* Supported group 6 functions */
|
|
sd->data[3] = 0x01;
|
|
sd->data[4] = 0x80; /* Supported group 5 functions */
|
|
sd->data[5] = 0x01;
|
|
sd->data[6] = 0x80; /* Supported group 4 functions */
|
|
sd->data[7] = 0x01;
|
|
sd->data[8] = 0x80; /* Supported group 3 functions */
|
|
sd->data[9] = 0x01;
|
|
sd->data[10] = 0x80; /* Supported group 2 functions */
|
|
sd->data[11] = 0x43;
|
|
sd->data[12] = 0x80; /* Supported group 1 functions */
|
|
sd->data[13] = 0x03;
|
|
for (i = 0; i < 6; i ++) {
|
|
new_func = (arg >> (i * 4)) & 0x0f;
|
|
if (mode && new_func != 0x0f)
|
|
sd->function_group[i] = new_func;
|
|
sd->data[14 + (i >> 1)] = new_func << ((i * 4) & 4);
|
|
}
|
|
memset(&sd->data[17], 0, 47);
|
|
crc = sd_crc16(sd->data, 64);
|
|
sd->data[65] = crc >> 8;
|
|
sd->data[66] = crc & 0xff;
|
|
}
|
|
|
|
static inline bool sd_wp_addr(SDState *sd, uint64_t addr)
|
|
{
|
|
return test_bit(sd_addr_to_wpnum(addr), sd->wp_groups);
|
|
}
|
|
|
|
static void sd_lock_command(SDState *sd)
|
|
{
|
|
int erase, lock, clr_pwd, set_pwd, pwd_len;
|
|
erase = !!(sd->data[0] & 0x08);
|
|
lock = sd->data[0] & 0x04;
|
|
clr_pwd = sd->data[0] & 0x02;
|
|
set_pwd = sd->data[0] & 0x01;
|
|
|
|
if (sd->blk_len > 1)
|
|
pwd_len = sd->data[1];
|
|
else
|
|
pwd_len = 0;
|
|
|
|
if (erase) {
|
|
if (!(sd->card_status & CARD_IS_LOCKED) || sd->blk_len > 1 ||
|
|
set_pwd || clr_pwd || lock || sd->wp_switch ||
|
|
(sd->csd[14] & 0x20)) {
|
|
sd->card_status |= LOCK_UNLOCK_FAILED;
|
|
return;
|
|
}
|
|
bitmap_zero(sd->wp_groups, sd->wpgrps_size);
|
|
sd->csd[14] &= ~0x10;
|
|
sd->card_status &= ~CARD_IS_LOCKED;
|
|
sd->pwd_len = 0;
|
|
/* Erasing the entire card here! */
|
|
fprintf(stderr, "SD: Card force-erased by CMD42\n");
|
|
return;
|
|
}
|
|
|
|
if (sd->blk_len < 2 + pwd_len ||
|
|
pwd_len <= sd->pwd_len ||
|
|
pwd_len > sd->pwd_len + 16) {
|
|
sd->card_status |= LOCK_UNLOCK_FAILED;
|
|
return;
|
|
}
|
|
|
|
if (sd->pwd_len && memcmp(sd->pwd, sd->data + 2, sd->pwd_len)) {
|
|
sd->card_status |= LOCK_UNLOCK_FAILED;
|
|
return;
|
|
}
|
|
|
|
pwd_len -= sd->pwd_len;
|
|
if ((pwd_len && !set_pwd) ||
|
|
(clr_pwd && (set_pwd || lock)) ||
|
|
(lock && !sd->pwd_len && !set_pwd) ||
|
|
(!set_pwd && !clr_pwd &&
|
|
(((sd->card_status & CARD_IS_LOCKED) && lock) ||
|
|
(!(sd->card_status & CARD_IS_LOCKED) && !lock)))) {
|
|
sd->card_status |= LOCK_UNLOCK_FAILED;
|
|
return;
|
|
}
|
|
|
|
if (set_pwd) {
|
|
memcpy(sd->pwd, sd->data + 2 + sd->pwd_len, pwd_len);
|
|
sd->pwd_len = pwd_len;
|
|
}
|
|
|
|
if (clr_pwd) {
|
|
sd->pwd_len = 0;
|
|
}
|
|
|
|
if (lock)
|
|
sd->card_status |= CARD_IS_LOCKED;
|
|
else
|
|
sd->card_status &= ~CARD_IS_LOCKED;
|
|
}
|
|
|
|
static sd_rsp_type_t sd_normal_command(SDState *sd,
|
|
SDRequest req)
|
|
{
|
|
uint32_t rca = 0x0000;
|
|
uint64_t addr = (sd->ocr & (1 << 30)) ? (uint64_t) req.arg << 9 : req.arg;
|
|
|
|
/* Not interpreting this as an app command */
|
|
sd->card_status &= ~APP_CMD;
|
|
|
|
if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc)
|
|
rca = req.arg >> 16;
|
|
|
|
DPRINTF("CMD%d 0x%08x state %d\n", req.cmd, req.arg, sd->state);
|
|
switch (req.cmd) {
|
|
/* Basic commands (Class 0 and Class 1) */
|
|
case 0: /* CMD0: GO_IDLE_STATE */
|
|
switch (sd->state) {
|
|
case sd_inactive_state:
|
|
return sd->spi ? sd_r1 : sd_r0;
|
|
|
|
default:
|
|
sd->state = sd_idle_state;
|
|
sd_reset(sd, sd->bdrv);
|
|
return sd->spi ? sd_r1 : sd_r0;
|
|
}
|
|
break;
|
|
|
|
case 1: /* CMD1: SEND_OP_CMD */
|
|
if (!sd->spi)
|
|
goto bad_cmd;
|
|
|
|
sd->state = sd_transfer_state;
|
|
return sd_r1;
|
|
|
|
case 2: /* CMD2: ALL_SEND_CID */
|
|
if (sd->spi)
|
|
goto bad_cmd;
|
|
switch (sd->state) {
|
|
case sd_ready_state:
|
|
sd->state = sd_identification_state;
|
|
return sd_r2_i;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 3: /* CMD3: SEND_RELATIVE_ADDR */
|
|
if (sd->spi)
|
|
goto bad_cmd;
|
|
switch (sd->state) {
|
|
case sd_identification_state:
|
|
case sd_standby_state:
|
|
sd->state = sd_standby_state;
|
|
sd_set_rca(sd);
|
|
return sd_r6;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 4: /* CMD4: SEND_DSR */
|
|
if (sd->spi)
|
|
goto bad_cmd;
|
|
switch (sd->state) {
|
|
case sd_standby_state:
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 5: /* CMD5: reserved for SDIO cards */
|
|
return sd_illegal;
|
|
|
|
case 6: /* CMD6: SWITCH_FUNCTION */
|
|
if (sd->spi)
|
|
goto bad_cmd;
|
|
switch (sd->mode) {
|
|
case sd_data_transfer_mode:
|
|
sd_function_switch(sd, req.arg);
|
|
sd->state = sd_sendingdata_state;
|
|
sd->data_start = 0;
|
|
sd->data_offset = 0;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 7: /* CMD7: SELECT/DESELECT_CARD */
|
|
if (sd->spi)
|
|
goto bad_cmd;
|
|
switch (sd->state) {
|
|
case sd_standby_state:
|
|
if (sd->rca != rca)
|
|
return sd_r0;
|
|
|
|
sd->state = sd_transfer_state;
|
|
return sd_r1b;
|
|
|
|
case sd_transfer_state:
|
|
case sd_sendingdata_state:
|
|
if (sd->rca == rca)
|
|
break;
|
|
|
|
sd->state = sd_standby_state;
|
|
return sd_r1b;
|
|
|
|
case sd_disconnect_state:
|
|
if (sd->rca != rca)
|
|
return sd_r0;
|
|
|
|
sd->state = sd_programming_state;
|
|
return sd_r1b;
|
|
|
|
case sd_programming_state:
|
|
if (sd->rca == rca)
|
|
break;
|
|
|
|
sd->state = sd_disconnect_state;
|
|
return sd_r1b;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 8: /* CMD8: SEND_IF_COND */
|
|
/* Physical Layer Specification Version 2.00 command */
|
|
switch (sd->state) {
|
|
case sd_idle_state:
|
|
sd->vhs = 0;
|
|
|
|
/* No response if not exactly one VHS bit is set. */
|
|
if (!(req.arg >> 8) || (req.arg >> ffs(req.arg & ~0xff)))
|
|
return sd->spi ? sd_r7 : sd_r0;
|
|
|
|
/* Accept. */
|
|
sd->vhs = req.arg;
|
|
return sd_r7;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 9: /* CMD9: SEND_CSD */
|
|
switch (sd->state) {
|
|
case sd_standby_state:
|
|
if (sd->rca != rca)
|
|
return sd_r0;
|
|
|
|
return sd_r2_s;
|
|
|
|
case sd_transfer_state:
|
|
if (!sd->spi)
|
|
break;
|
|
sd->state = sd_sendingdata_state;
|
|
memcpy(sd->data, sd->csd, 16);
|
|
sd->data_start = addr;
|
|
sd->data_offset = 0;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 10: /* CMD10: SEND_CID */
|
|
switch (sd->state) {
|
|
case sd_standby_state:
|
|
if (sd->rca != rca)
|
|
return sd_r0;
|
|
|
|
return sd_r2_i;
|
|
|
|
case sd_transfer_state:
|
|
if (!sd->spi)
|
|
break;
|
|
sd->state = sd_sendingdata_state;
|
|
memcpy(sd->data, sd->cid, 16);
|
|
sd->data_start = addr;
|
|
sd->data_offset = 0;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 11: /* CMD11: READ_DAT_UNTIL_STOP */
|
|
if (sd->spi)
|
|
goto bad_cmd;
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->state = sd_sendingdata_state;
|
|
sd->data_start = req.arg;
|
|
sd->data_offset = 0;
|
|
|
|
if (sd->data_start + sd->blk_len > sd->size)
|
|
sd->card_status |= ADDRESS_ERROR;
|
|
return sd_r0;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 12: /* CMD12: STOP_TRANSMISSION */
|
|
switch (sd->state) {
|
|
case sd_sendingdata_state:
|
|
sd->state = sd_transfer_state;
|
|
return sd_r1b;
|
|
|
|
case sd_receivingdata_state:
|
|
sd->state = sd_programming_state;
|
|
/* Bzzzzzzztt .... Operation complete. */
|
|
sd->state = sd_transfer_state;
|
|
return sd_r1b;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 13: /* CMD13: SEND_STATUS */
|
|
switch (sd->mode) {
|
|
case sd_data_transfer_mode:
|
|
if (sd->rca != rca)
|
|
return sd_r0;
|
|
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 15: /* CMD15: GO_INACTIVE_STATE */
|
|
if (sd->spi)
|
|
goto bad_cmd;
|
|
switch (sd->mode) {
|
|
case sd_data_transfer_mode:
|
|
if (sd->rca != rca)
|
|
return sd_r0;
|
|
|
|
sd->state = sd_inactive_state;
|
|
return sd_r0;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
/* Block read commands (Classs 2) */
|
|
case 16: /* CMD16: SET_BLOCKLEN */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
if (req.arg > (1 << HWBLOCK_SHIFT))
|
|
sd->card_status |= BLOCK_LEN_ERROR;
|
|
else
|
|
sd->blk_len = req.arg;
|
|
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 17: /* CMD17: READ_SINGLE_BLOCK */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->state = sd_sendingdata_state;
|
|
sd->data_start = addr;
|
|
sd->data_offset = 0;
|
|
|
|
if (sd->data_start + sd->blk_len > sd->size)
|
|
sd->card_status |= ADDRESS_ERROR;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 18: /* CMD18: READ_MULTIPLE_BLOCK */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->state = sd_sendingdata_state;
|
|
sd->data_start = addr;
|
|
sd->data_offset = 0;
|
|
|
|
if (sd->data_start + sd->blk_len > sd->size)
|
|
sd->card_status |= ADDRESS_ERROR;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
/* Block write commands (Class 4) */
|
|
case 24: /* CMD24: WRITE_SINGLE_BLOCK */
|
|
if (sd->spi)
|
|
goto unimplemented_cmd;
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
/* Writing in SPI mode not implemented. */
|
|
if (sd->spi)
|
|
break;
|
|
sd->state = sd_receivingdata_state;
|
|
sd->data_start = addr;
|
|
sd->data_offset = 0;
|
|
sd->blk_written = 0;
|
|
|
|
if (sd->data_start + sd->blk_len > sd->size)
|
|
sd->card_status |= ADDRESS_ERROR;
|
|
if (sd_wp_addr(sd, sd->data_start))
|
|
sd->card_status |= WP_VIOLATION;
|
|
if (sd->csd[14] & 0x30)
|
|
sd->card_status |= WP_VIOLATION;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */
|
|
if (sd->spi)
|
|
goto unimplemented_cmd;
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
/* Writing in SPI mode not implemented. */
|
|
if (sd->spi)
|
|
break;
|
|
sd->state = sd_receivingdata_state;
|
|
sd->data_start = addr;
|
|
sd->data_offset = 0;
|
|
sd->blk_written = 0;
|
|
|
|
if (sd->data_start + sd->blk_len > sd->size)
|
|
sd->card_status |= ADDRESS_ERROR;
|
|
if (sd_wp_addr(sd, sd->data_start))
|
|
sd->card_status |= WP_VIOLATION;
|
|
if (sd->csd[14] & 0x30)
|
|
sd->card_status |= WP_VIOLATION;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 26: /* CMD26: PROGRAM_CID */
|
|
if (sd->spi)
|
|
goto bad_cmd;
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->state = sd_receivingdata_state;
|
|
sd->data_start = 0;
|
|
sd->data_offset = 0;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 27: /* CMD27: PROGRAM_CSD */
|
|
if (sd->spi)
|
|
goto unimplemented_cmd;
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->state = sd_receivingdata_state;
|
|
sd->data_start = 0;
|
|
sd->data_offset = 0;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
/* Write protection (Class 6) */
|
|
case 28: /* CMD28: SET_WRITE_PROT */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
if (addr >= sd->size) {
|
|
sd->card_status |= ADDRESS_ERROR;
|
|
return sd_r1b;
|
|
}
|
|
|
|
sd->state = sd_programming_state;
|
|
set_bit(sd_addr_to_wpnum(addr), sd->wp_groups);
|
|
/* Bzzzzzzztt .... Operation complete. */
|
|
sd->state = sd_transfer_state;
|
|
return sd_r1b;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 29: /* CMD29: CLR_WRITE_PROT */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
if (addr >= sd->size) {
|
|
sd->card_status |= ADDRESS_ERROR;
|
|
return sd_r1b;
|
|
}
|
|
|
|
sd->state = sd_programming_state;
|
|
clear_bit(sd_addr_to_wpnum(addr), sd->wp_groups);
|
|
/* Bzzzzzzztt .... Operation complete. */
|
|
sd->state = sd_transfer_state;
|
|
return sd_r1b;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 30: /* CMD30: SEND_WRITE_PROT */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->state = sd_sendingdata_state;
|
|
*(uint32_t *) sd->data = sd_wpbits(sd, req.arg);
|
|
sd->data_start = addr;
|
|
sd->data_offset = 0;
|
|
return sd_r1b;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
/* Erase commands (Class 5) */
|
|
case 32: /* CMD32: ERASE_WR_BLK_START */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->erase_start = req.arg;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 33: /* CMD33: ERASE_WR_BLK_END */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->erase_end = req.arg;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 38: /* CMD38: ERASE */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
if (sd->csd[14] & 0x30) {
|
|
sd->card_status |= WP_VIOLATION;
|
|
return sd_r1b;
|
|
}
|
|
|
|
sd->state = sd_programming_state;
|
|
sd_erase(sd);
|
|
/* Bzzzzzzztt .... Operation complete. */
|
|
sd->state = sd_transfer_state;
|
|
return sd_r1b;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
/* Lock card commands (Class 7) */
|
|
case 42: /* CMD42: LOCK_UNLOCK */
|
|
if (sd->spi)
|
|
goto unimplemented_cmd;
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->state = sd_receivingdata_state;
|
|
sd->data_start = 0;
|
|
sd->data_offset = 0;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 52:
|
|
case 53:
|
|
/* CMD52, CMD53: reserved for SDIO cards
|
|
* (see the SDIO Simplified Specification V2.0)
|
|
* Handle as illegal command but do not complain
|
|
* on stderr, as some OSes may use these in their
|
|
* probing for presence of an SDIO card.
|
|
*/
|
|
return sd_illegal;
|
|
|
|
/* Application specific commands (Class 8) */
|
|
case 55: /* CMD55: APP_CMD */
|
|
if (sd->rca != rca)
|
|
return sd_r0;
|
|
|
|
sd->expecting_acmd = true;
|
|
sd->card_status |= APP_CMD;
|
|
return sd_r1;
|
|
|
|
case 56: /* CMD56: GEN_CMD */
|
|
fprintf(stderr, "SD: GEN_CMD 0x%08x\n", req.arg);
|
|
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->data_offset = 0;
|
|
if (req.arg & 1)
|
|
sd->state = sd_sendingdata_state;
|
|
else
|
|
sd->state = sd_receivingdata_state;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
bad_cmd:
|
|
fprintf(stderr, "SD: Unknown CMD%i\n", req.cmd);
|
|
return sd_illegal;
|
|
|
|
unimplemented_cmd:
|
|
/* Commands that are recognised but not yet implemented in SPI mode. */
|
|
fprintf(stderr, "SD: CMD%i not implemented in SPI mode\n", req.cmd);
|
|
return sd_illegal;
|
|
}
|
|
|
|
fprintf(stderr, "SD: CMD%i in a wrong state\n", req.cmd);
|
|
return sd_illegal;
|
|
}
|
|
|
|
static sd_rsp_type_t sd_app_command(SDState *sd,
|
|
SDRequest req)
|
|
{
|
|
DPRINTF("ACMD%d 0x%08x\n", req.cmd, req.arg);
|
|
sd->card_status |= APP_CMD;
|
|
switch (req.cmd) {
|
|
case 6: /* ACMD6: SET_BUS_WIDTH */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->sd_status[0] &= 0x3f;
|
|
sd->sd_status[0] |= (req.arg & 0x03) << 6;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 13: /* ACMD13: SD_STATUS */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->state = sd_sendingdata_state;
|
|
sd->data_start = 0;
|
|
sd->data_offset = 0;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
*(uint32_t *) sd->data = sd->blk_written;
|
|
|
|
sd->state = sd_sendingdata_state;
|
|
sd->data_start = 0;
|
|
sd->data_offset = 0;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 23: /* ACMD23: SET_WR_BLK_ERASE_COUNT */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 41: /* ACMD41: SD_APP_OP_COND */
|
|
if (sd->spi) {
|
|
/* SEND_OP_CMD */
|
|
sd->state = sd_transfer_state;
|
|
return sd_r1;
|
|
}
|
|
switch (sd->state) {
|
|
case sd_idle_state:
|
|
/* We accept any voltage. 10000 V is nothing. */
|
|
if (req.arg)
|
|
sd->state = sd_ready_state;
|
|
|
|
return sd_r3;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 42: /* ACMD42: SET_CLR_CARD_DETECT */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
/* Bringing in the 50KOhm pull-up resistor... Done. */
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 51: /* ACMD51: SEND_SCR */
|
|
switch (sd->state) {
|
|
case sd_transfer_state:
|
|
sd->state = sd_sendingdata_state;
|
|
sd->data_start = 0;
|
|
sd->data_offset = 0;
|
|
return sd_r1;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/* Fall back to standard commands. */
|
|
return sd_normal_command(sd, req);
|
|
}
|
|
|
|
fprintf(stderr, "SD: ACMD%i in a wrong state\n", req.cmd);
|
|
return sd_illegal;
|
|
}
|
|
|
|
static int cmd_valid_while_locked(SDState *sd, SDRequest *req)
|
|
{
|
|
/* Valid commands in locked state:
|
|
* basic class (0)
|
|
* lock card class (7)
|
|
* CMD16
|
|
* implicitly, the ACMD prefix CMD55
|
|
* ACMD41 and ACMD42
|
|
* Anything else provokes an "illegal command" response.
|
|
*/
|
|
if (sd->expecting_acmd) {
|
|
return req->cmd == 41 || req->cmd == 42;
|
|
}
|
|
if (req->cmd == 16 || req->cmd == 55) {
|
|
return 1;
|
|
}
|
|
return sd_cmd_class[req->cmd] == 0 || sd_cmd_class[req->cmd] == 7;
|
|
}
|
|
|
|
int sd_do_command(SDState *sd, SDRequest *req,
|
|
uint8_t *response) {
|
|
int last_state;
|
|
sd_rsp_type_t rtype;
|
|
int rsplen;
|
|
|
|
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable) {
|
|
return 0;
|
|
}
|
|
|
|
if (sd_req_crc_validate(req)) {
|
|
sd->card_status |= COM_CRC_ERROR;
|
|
rtype = sd_illegal;
|
|
goto send_response;
|
|
}
|
|
|
|
if (sd->card_status & CARD_IS_LOCKED) {
|
|
if (!cmd_valid_while_locked(sd, req)) {
|
|
sd->card_status |= ILLEGAL_COMMAND;
|
|
sd->expecting_acmd = false;
|
|
fprintf(stderr, "SD: Card is locked\n");
|
|
rtype = sd_illegal;
|
|
goto send_response;
|
|
}
|
|
}
|
|
|
|
last_state = sd->state;
|
|
sd_set_mode(sd);
|
|
|
|
if (sd->expecting_acmd) {
|
|
sd->expecting_acmd = false;
|
|
rtype = sd_app_command(sd, *req);
|
|
} else {
|
|
rtype = sd_normal_command(sd, *req);
|
|
}
|
|
|
|
if (rtype == sd_illegal) {
|
|
sd->card_status |= ILLEGAL_COMMAND;
|
|
} else {
|
|
/* Valid command, we can update the 'state before command' bits.
|
|
* (Do this now so they appear in r1 responses.)
|
|
*/
|
|
sd->current_cmd = req->cmd;
|
|
sd->card_status &= ~CURRENT_STATE;
|
|
sd->card_status |= (last_state << 9);
|
|
}
|
|
|
|
send_response:
|
|
switch (rtype) {
|
|
case sd_r1:
|
|
case sd_r1b:
|
|
sd_response_r1_make(sd, response);
|
|
rsplen = 4;
|
|
break;
|
|
|
|
case sd_r2_i:
|
|
memcpy(response, sd->cid, sizeof(sd->cid));
|
|
rsplen = 16;
|
|
break;
|
|
|
|
case sd_r2_s:
|
|
memcpy(response, sd->csd, sizeof(sd->csd));
|
|
rsplen = 16;
|
|
break;
|
|
|
|
case sd_r3:
|
|
sd_response_r3_make(sd, response);
|
|
rsplen = 4;
|
|
break;
|
|
|
|
case sd_r6:
|
|
sd_response_r6_make(sd, response);
|
|
rsplen = 4;
|
|
break;
|
|
|
|
case sd_r7:
|
|
sd_response_r7_make(sd, response);
|
|
rsplen = 4;
|
|
break;
|
|
|
|
case sd_r0:
|
|
case sd_illegal:
|
|
default:
|
|
rsplen = 0;
|
|
break;
|
|
}
|
|
|
|
if (rtype != sd_illegal) {
|
|
/* Clear the "clear on valid command" status bits now we've
|
|
* sent any response
|
|
*/
|
|
sd->card_status &= ~CARD_STATUS_B;
|
|
}
|
|
|
|
#ifdef DEBUG_SD
|
|
if (rsplen) {
|
|
int i;
|
|
DPRINTF("Response:");
|
|
for (i = 0; i < rsplen; i++)
|
|
fprintf(stderr, " %02x", response[i]);
|
|
fprintf(stderr, " state %d\n", sd->state);
|
|
} else {
|
|
DPRINTF("No response %d\n", sd->state);
|
|
}
|
|
#endif
|
|
|
|
return rsplen;
|
|
}
|
|
|
|
static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len)
|
|
{
|
|
uint64_t end = addr + len;
|
|
|
|
DPRINTF("sd_blk_read: addr = 0x%08llx, len = %d\n",
|
|
(unsigned long long) addr, len);
|
|
if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) < 0) {
|
|
fprintf(stderr, "sd_blk_read: read error on host side\n");
|
|
return;
|
|
}
|
|
|
|
if (end > (addr & ~511) + 512) {
|
|
memcpy(sd->data, sd->buf + (addr & 511), 512 - (addr & 511));
|
|
|
|
if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) < 0) {
|
|
fprintf(stderr, "sd_blk_read: read error on host side\n");
|
|
return;
|
|
}
|
|
memcpy(sd->data + 512 - (addr & 511), sd->buf, end & 511);
|
|
} else
|
|
memcpy(sd->data, sd->buf + (addr & 511), len);
|
|
}
|
|
|
|
static void sd_blk_write(SDState *sd, uint64_t addr, uint32_t len)
|
|
{
|
|
uint64_t end = addr + len;
|
|
|
|
if ((addr & 511) || len < 512)
|
|
if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) < 0) {
|
|
fprintf(stderr, "sd_blk_write: read error on host side\n");
|
|
return;
|
|
}
|
|
|
|
if (end > (addr & ~511) + 512) {
|
|
memcpy(sd->buf + (addr & 511), sd->data, 512 - (addr & 511));
|
|
if (bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) < 0) {
|
|
fprintf(stderr, "sd_blk_write: write error on host side\n");
|
|
return;
|
|
}
|
|
|
|
if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) < 0) {
|
|
fprintf(stderr, "sd_blk_write: read error on host side\n");
|
|
return;
|
|
}
|
|
memcpy(sd->buf, sd->data + 512 - (addr & 511), end & 511);
|
|
if (bdrv_write(sd->bdrv, end >> 9, sd->buf, 1) < 0) {
|
|
fprintf(stderr, "sd_blk_write: write error on host side\n");
|
|
}
|
|
} else {
|
|
memcpy(sd->buf + (addr & 511), sd->data, len);
|
|
if (!sd->bdrv || bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) < 0) {
|
|
fprintf(stderr, "sd_blk_write: write error on host side\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
#define BLK_READ_BLOCK(a, len) sd_blk_read(sd, a, len)
|
|
#define BLK_WRITE_BLOCK(a, len) sd_blk_write(sd, a, len)
|
|
#define APP_READ_BLOCK(a, len) memset(sd->data, 0xec, len)
|
|
#define APP_WRITE_BLOCK(a, len)
|
|
|
|
void sd_write_data(SDState *sd, uint8_t value)
|
|
{
|
|
int i;
|
|
|
|
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable)
|
|
return;
|
|
|
|
if (sd->state != sd_receivingdata_state) {
|
|
fprintf(stderr, "sd_write_data: not in Receiving-Data state\n");
|
|
return;
|
|
}
|
|
|
|
if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
|
|
return;
|
|
|
|
switch (sd->current_cmd) {
|
|
case 24: /* CMD24: WRITE_SINGLE_BLOCK */
|
|
sd->data[sd->data_offset ++] = value;
|
|
if (sd->data_offset >= sd->blk_len) {
|
|
/* TODO: Check CRC before committing */
|
|
sd->state = sd_programming_state;
|
|
BLK_WRITE_BLOCK(sd->data_start, sd->data_offset);
|
|
sd->blk_written ++;
|
|
sd->csd[14] |= 0x40;
|
|
/* Bzzzzzzztt .... Operation complete. */
|
|
sd->state = sd_transfer_state;
|
|
}
|
|
break;
|
|
|
|
case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */
|
|
if (sd->data_offset == 0) {
|
|
/* Start of the block - lets check the address is valid */
|
|
if (sd->data_start + sd->blk_len > sd->size) {
|
|
sd->card_status |= ADDRESS_ERROR;
|
|
break;
|
|
}
|
|
if (sd_wp_addr(sd, sd->data_start)) {
|
|
sd->card_status |= WP_VIOLATION;
|
|
break;
|
|
}
|
|
}
|
|
sd->data[sd->data_offset++] = value;
|
|
if (sd->data_offset >= sd->blk_len) {
|
|
/* TODO: Check CRC before committing */
|
|
sd->state = sd_programming_state;
|
|
BLK_WRITE_BLOCK(sd->data_start, sd->data_offset);
|
|
sd->blk_written++;
|
|
sd->data_start += sd->blk_len;
|
|
sd->data_offset = 0;
|
|
sd->csd[14] |= 0x40;
|
|
|
|
/* Bzzzzzzztt .... Operation complete. */
|
|
sd->state = sd_receivingdata_state;
|
|
}
|
|
break;
|
|
|
|
case 26: /* CMD26: PROGRAM_CID */
|
|
sd->data[sd->data_offset ++] = value;
|
|
if (sd->data_offset >= sizeof(sd->cid)) {
|
|
/* TODO: Check CRC before committing */
|
|
sd->state = sd_programming_state;
|
|
for (i = 0; i < sizeof(sd->cid); i ++)
|
|
if ((sd->cid[i] | 0x00) != sd->data[i])
|
|
sd->card_status |= CID_CSD_OVERWRITE;
|
|
|
|
if (!(sd->card_status & CID_CSD_OVERWRITE))
|
|
for (i = 0; i < sizeof(sd->cid); i ++) {
|
|
sd->cid[i] |= 0x00;
|
|
sd->cid[i] &= sd->data[i];
|
|
}
|
|
/* Bzzzzzzztt .... Operation complete. */
|
|
sd->state = sd_transfer_state;
|
|
}
|
|
break;
|
|
|
|
case 27: /* CMD27: PROGRAM_CSD */
|
|
sd->data[sd->data_offset ++] = value;
|
|
if (sd->data_offset >= sizeof(sd->csd)) {
|
|
/* TODO: Check CRC before committing */
|
|
sd->state = sd_programming_state;
|
|
for (i = 0; i < sizeof(sd->csd); i ++)
|
|
if ((sd->csd[i] | sd_csd_rw_mask[i]) !=
|
|
(sd->data[i] | sd_csd_rw_mask[i]))
|
|
sd->card_status |= CID_CSD_OVERWRITE;
|
|
|
|
/* Copy flag (OTP) & Permanent write protect */
|
|
if (sd->csd[14] & ~sd->data[14] & 0x60)
|
|
sd->card_status |= CID_CSD_OVERWRITE;
|
|
|
|
if (!(sd->card_status & CID_CSD_OVERWRITE))
|
|
for (i = 0; i < sizeof(sd->csd); i ++) {
|
|
sd->csd[i] |= sd_csd_rw_mask[i];
|
|
sd->csd[i] &= sd->data[i];
|
|
}
|
|
/* Bzzzzzzztt .... Operation complete. */
|
|
sd->state = sd_transfer_state;
|
|
}
|
|
break;
|
|
|
|
case 42: /* CMD42: LOCK_UNLOCK */
|
|
sd->data[sd->data_offset ++] = value;
|
|
if (sd->data_offset >= sd->blk_len) {
|
|
/* TODO: Check CRC before committing */
|
|
sd->state = sd_programming_state;
|
|
sd_lock_command(sd);
|
|
/* Bzzzzzzztt .... Operation complete. */
|
|
sd->state = sd_transfer_state;
|
|
}
|
|
break;
|
|
|
|
case 56: /* CMD56: GEN_CMD */
|
|
sd->data[sd->data_offset ++] = value;
|
|
if (sd->data_offset >= sd->blk_len) {
|
|
APP_WRITE_BLOCK(sd->data_start, sd->data_offset);
|
|
sd->state = sd_transfer_state;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
fprintf(stderr, "sd_write_data: unknown command\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
uint8_t sd_read_data(SDState *sd)
|
|
{
|
|
/* TODO: Append CRCs */
|
|
uint8_t ret;
|
|
int io_len;
|
|
|
|
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable)
|
|
return 0x00;
|
|
|
|
if (sd->state != sd_sendingdata_state) {
|
|
fprintf(stderr, "sd_read_data: not in Sending-Data state\n");
|
|
return 0x00;
|
|
}
|
|
|
|
if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
|
|
return 0x00;
|
|
|
|
io_len = (sd->ocr & (1 << 30)) ? 512 : sd->blk_len;
|
|
|
|
switch (sd->current_cmd) {
|
|
case 6: /* CMD6: SWITCH_FUNCTION */
|
|
ret = sd->data[sd->data_offset ++];
|
|
|
|
if (sd->data_offset >= 64)
|
|
sd->state = sd_transfer_state;
|
|
break;
|
|
|
|
case 9: /* CMD9: SEND_CSD */
|
|
case 10: /* CMD10: SEND_CID */
|
|
ret = sd->data[sd->data_offset ++];
|
|
|
|
if (sd->data_offset >= 16)
|
|
sd->state = sd_transfer_state;
|
|
break;
|
|
|
|
case 11: /* CMD11: READ_DAT_UNTIL_STOP */
|
|
if (sd->data_offset == 0)
|
|
BLK_READ_BLOCK(sd->data_start, io_len);
|
|
ret = sd->data[sd->data_offset ++];
|
|
|
|
if (sd->data_offset >= io_len) {
|
|
sd->data_start += io_len;
|
|
sd->data_offset = 0;
|
|
if (sd->data_start + io_len > sd->size) {
|
|
sd->card_status |= ADDRESS_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 13: /* ACMD13: SD_STATUS */
|
|
ret = sd->sd_status[sd->data_offset ++];
|
|
|
|
if (sd->data_offset >= sizeof(sd->sd_status))
|
|
sd->state = sd_transfer_state;
|
|
break;
|
|
|
|
case 17: /* CMD17: READ_SINGLE_BLOCK */
|
|
if (sd->data_offset == 0)
|
|
BLK_READ_BLOCK(sd->data_start, io_len);
|
|
ret = sd->data[sd->data_offset ++];
|
|
|
|
if (sd->data_offset >= io_len)
|
|
sd->state = sd_transfer_state;
|
|
break;
|
|
|
|
case 18: /* CMD18: READ_MULTIPLE_BLOCK */
|
|
if (sd->data_offset == 0)
|
|
BLK_READ_BLOCK(sd->data_start, io_len);
|
|
ret = sd->data[sd->data_offset ++];
|
|
|
|
if (sd->data_offset >= io_len) {
|
|
sd->data_start += io_len;
|
|
sd->data_offset = 0;
|
|
if (sd->data_start + io_len > sd->size) {
|
|
sd->card_status |= ADDRESS_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */
|
|
ret = sd->data[sd->data_offset ++];
|
|
|
|
if (sd->data_offset >= 4)
|
|
sd->state = sd_transfer_state;
|
|
break;
|
|
|
|
case 30: /* CMD30: SEND_WRITE_PROT */
|
|
ret = sd->data[sd->data_offset ++];
|
|
|
|
if (sd->data_offset >= 4)
|
|
sd->state = sd_transfer_state;
|
|
break;
|
|
|
|
case 51: /* ACMD51: SEND_SCR */
|
|
ret = sd->scr[sd->data_offset ++];
|
|
|
|
if (sd->data_offset >= sizeof(sd->scr))
|
|
sd->state = sd_transfer_state;
|
|
break;
|
|
|
|
case 56: /* CMD56: GEN_CMD */
|
|
if (sd->data_offset == 0)
|
|
APP_READ_BLOCK(sd->data_start, sd->blk_len);
|
|
ret = sd->data[sd->data_offset ++];
|
|
|
|
if (sd->data_offset >= sd->blk_len)
|
|
sd->state = sd_transfer_state;
|
|
break;
|
|
|
|
default:
|
|
fprintf(stderr, "sd_read_data: unknown command\n");
|
|
return 0x00;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool sd_data_ready(SDState *sd)
|
|
{
|
|
return sd->state == sd_sendingdata_state;
|
|
}
|
|
|
|
void sd_enable(SDState *sd, bool enable)
|
|
{
|
|
sd->enable = enable;
|
|
}
|