From 8c53791ec11ffda03de788d5b0cb8512918d8027 Mon Sep 17 00:00:00 2001 From: Andrzej Zaborowski Date: Fri, 16 Mar 2007 16:00:55 +0100 Subject: [PATCH] SecureDigital card emulation. --- hw/sd.c | 1519 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/sd.h | 129 ++++++ vl.c | 12 +- vl.h | 2 + 4 files changed, 1660 insertions(+), 2 deletions(-) diff --git a/hw/sd.c b/hw/sd.c new file mode 100644 index 0000000..37accde --- /dev/null +++ b/hw/sd.c @@ -0,0 +1,1519 @@ +/* + * SD Memory Card emulation as defined in the "SD Memory Card Physical + * layer specification, Version 1.10." + * + * Copyright (c) 2006 Andrzej Zaborowski + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "sd.h" + +struct sd_state_s { + enum { + sd_inactive, + sd_card_identification_mode, + sd_data_transfer_mode, + } mode; + enum { + sd_inactive_state = -1, + sd_idle_state = 0, + sd_ready_state, + sd_identification_state, + sd_standby_state, + sd_transfer_state, + sd_sendingdata_state, + sd_receivingdata_state, + sd_programming_state, + sd_disconnect_state, + } state; + uint32_t ocr; + uint8_t scr[8]; + uint8_t cid[16]; + uint8_t csd[16]; + uint16_t rca; + uint32_t card_status; + uint8_t sd_status[64]; + int wp_switch; + int *wp_groups; + uint32_t size; + int blk_len; + uint32_t erase_start; + uint32_t erase_end; + uint8_t pwd[16]; + int pwd_len; + int function_group[6]; + + int current_cmd; + int blk_written; + uint32_t data_start; + uint32_t data_offset; + uint8_t data[512]; + void (*readonly_cb)(void *, int); + void (*inserted_cb)(void *, int); + void *opaque; + BlockDriverState *bdrv; +}; + +static void sd_set_status(struct sd_state_s *sd) +{ + switch (sd->state) { + case sd_inactive_state: + sd->mode = sd_inactive; + break; + + case sd_idle_state: + case sd_ready_state: + case sd_identification_state: + sd->mode = sd_card_identification_mode; + break; + + case sd_standby_state: + case sd_transfer_state: + case sd_sendingdata_state: + case sd_receivingdata_state: + case sd_programming_state: + case sd_disconnect_state: + sd->mode = sd_data_transfer_mode; + break; + } + + sd->card_status &= ~CURRENT_STATE; + sd->card_status |= sd->state << 9; +} + +const sd_cmd_type_t sd_cmd_type[64] = { + sd_bc, sd_none, sd_bcr, sd_bcr, sd_none, sd_none, sd_none, sd_ac, + sd_none, sd_ac, sd_ac, sd_adtc, sd_ac, sd_ac, sd_none, sd_ac, + sd_ac, sd_adtc, sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, + sd_adtc, sd_adtc, sd_adtc, sd_adtc, sd_ac, sd_ac, sd_adtc, sd_none, + sd_ac, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, + sd_none, sd_none, sd_bc, sd_none, sd_none, sd_none, sd_none, sd_none, + sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, + sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, +}; + +const sd_cmd_type_t sd_acmd_type[64] = { + sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, + sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, + sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_ac, + sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, + sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, + sd_none, sd_bcr, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_none, + sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, sd_none, sd_none, + sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, +}; + +static const int sd_cmd_class[64] = { + 0, 0, 0, 0, 0, 9, 10, 0, 0, 0, 0, 1, 0, 0, 0, 0, + 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 6, 6, 6, 6, + 5, 5, 10, 10, 10, 10, 5, 9, 9, 9, 7, 7, 7, 7, 7, 7, + 7, 7, 10, 7, 9, 9, 9, 8, 8, 10, 8, 8, 8, 8, 8, 8, +}; + +static const sd_rsp_type_t sd_cmd_response[64] = { + sd_nore, sd_nore, sd_r2, sd_r6, sd_nore, sd_nore, sd_r1, sd_r1b, + sd_nore, sd_r2, sd_r2, sd_nore, sd_r1b, sd_r1, sd_nore, sd_nore, + sd_r1, sd_r1, sd_r1, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, + sd_r1, sd_r1, sd_r1, sd_r1, sd_r1b, sd_r1b, sd_r1, sd_nore, + sd_r1, sd_r1, sd_nore, sd_nore, sd_nore, sd_nore, sd_r1b, sd_nore, + sd_nore, sd_nore, sd_r1, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, + sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_r1, + sd_r1, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, +}; + +static const sd_rsp_type_t sd_acmd_response[64] = { + sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_r1, sd_nore, + sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_r1, sd_nore, sd_nore, + sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_r1, sd_nore, + sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, + sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, + sd_nore, sd_r3, sd_r1, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, + sd_nore, sd_nore, sd_nore, sd_r1, sd_nore, sd_nore, sd_nore, sd_nore, + sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, sd_nore, +}; + +static uint8_t sd_crc7(void *message, size_t width) +{ + int i, bit; + uint8_t shift_reg = 0x00; + uint8_t *msg = (uint8_t *) message; + + for (i = 0; i < width; i ++, msg ++) + for (bit = 7; bit >= 0; bit --) { + shift_reg <<= 1; + if ((shift_reg >> 7) ^ ((*msg >> bit) & 1)) + shift_reg ^= 0x89; + } + + return shift_reg; +} + +static uint16_t sd_crc16(void *message, size_t width) +{ + int i, bit; + uint16_t shift_reg = 0x0000; + uint16_t *msg = (uint16_t *) message; + width <<= 1; + + for (i = 0; i < width; i ++, msg ++) + for (bit = 15; bit >= 0; bit --) { + shift_reg <<= 1; + if ((shift_reg >> 15) ^ ((*msg >> bit) & 1)) + shift_reg ^= 0x1011; + } + + return shift_reg; +} + +static void sd_set_ocr(struct sd_state_s *sd) +{ + sd->ocr = 0x80fffff0; +} + +static void sd_set_scr(struct sd_state_s *sd) +{ + sd->scr[0] = 0x00; /* SCR Structure */ + sd->scr[1] = 0x2f; /* SD Security Support */ + sd->scr[2] = 0x00; + sd->scr[3] = 0x00; + sd->scr[4] = 0x00; + sd->scr[5] = 0x00; + sd->scr[6] = 0x00; + sd->scr[7] = 0x00; +} + +#define MID 0xaa +#define OID "XY" +#define PNM "QEMU!" +#define PRV 0x01 +#define MDT_YR 2006 +#define MDT_MON 2 + +static void sd_set_cid(struct sd_state_s *sd) +{ + sd->cid[0] = MID; /* Fake card manufacturer ID (MID) */ + sd->cid[1] = OID[0]; /* OEM/Application ID (OID) */ + sd->cid[2] = OID[1]; + sd->cid[3] = PNM[0]; /* Fake product name (PNM) */ + sd->cid[4] = PNM[1]; + sd->cid[5] = PNM[2]; + sd->cid[6] = PNM[3]; + sd->cid[7] = PNM[4]; + sd->cid[8] = PRV; /* Fake product revision (PRV) */ + sd->cid[9] = 0xde; /* Fake serial number (PSN) */ + sd->cid[10] = 0xad; + sd->cid[11] = 0xbe; + sd->cid[12] = 0xef; + sd->cid[13] = 0x00 | /* Manufacture date (MDT) */ + ((MDT_YR - 2000) / 10); + sd->cid[14] = ((MDT_YR % 10) << 4) | MDT_MON; + sd->cid[15] = (sd_crc7(sd->cid, 15) << 1) | 1; +} + +#define HWBLOCK_SHIFT 9 /* 512 bytes */ +#define SECTOR_SHIFT 5 /* 16 kilobytes */ +#define WPGROUP_SHIFT 7 /* 2 megs */ +#define CMULT_SHIFT 9 /* 512 times HWBLOCK_SIZE */ +#define BLOCK_SIZE (1 << (HWBLOCK_SHIFT)) +#define SECTOR_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT)) +#define WPGROUP_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) + +static const uint8_t sd_csd_rw_mask[16] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xfe, +}; + +static void sd_set_csd(struct sd_state_s *sd, uint32_t size) +{ + uint32_t csize = (size >> (CMULT_SHIFT + HWBLOCK_SHIFT)) - 1; + uint32_t sectsize = (1 << (SECTOR_SHIFT + 1)) - 1; + uint32_t wpsize = (1 << (WPGROUP_SHIFT + 1)) - 1; + + sd->csd[0] = 0x00; /* CSD structure */ + sd->csd[1] = 0x26; /* Data read access-time-1 */ + sd->csd[2] = 0x00; /* Data read access-time-2 */ + sd->csd[3] = 0x5a; /* Max. data transfer rate */ + sd->csd[4] = 0x5f; /* Card Command Classes */ + sd->csd[5] = 0x50 | /* Max. read data block length */ + HWBLOCK_SHIFT; + sd->csd[6] = 0xe0 | /* Partial block for read allowed */ + ((csize >> 10) & 0x03); + sd->csd[7] = 0x00 | /* Device size */ + ((csize >> 2) & 0xff); + sd->csd[8] = 0x3f | /* Max. read current */ + ((csize << 6) & 0xc0); + sd->csd[9] = 0xfc | /* Max. write current */ + ((CMULT_SHIFT - 2) >> 1); + sd->csd[10] = 0x40 | /* Erase sector size */ + (((CMULT_SHIFT - 2) << 7) & 0x80) | (sectsize >> 1); + sd->csd[11] = 0x00 | /* Write protect group size */ + ((sectsize << 7) & 0x80) | wpsize; + sd->csd[12] = 0x90 | /* Write speed factor */ + (HWBLOCK_SHIFT >> 2); + sd->csd[13] = 0x20 | /* Max. write data block length */ + ((HWBLOCK_SHIFT << 6) & 0xc0); + sd->csd[14] = 0x00; /* File format group */ + sd->csd[15] = (sd_crc7(sd->csd, 15) << 1) | 1; +} + +static void sd_set_rca(struct sd_state_s *sd) +{ + sd->rca += 0x4567; +} + +#define CARD_STATUS_A 0x02004100 +#define CARD_STATUS_B 0x00c01e00 +#define CARD_STATUS_C 0xfd39a028 + +static void sd_set_cardstatus(struct sd_state_s *sd) +{ + sd->card_status = 0x00000100; +} + +static void sd_set_sdstatus(struct sd_state_s *sd) +{ + memset(sd->sd_status, 0, 64); +} + +static int sd_req_crc_validate(struct sd_request_s *req) +{ + uint8_t buffer[5]; + buffer[0] = 0x40 | req->cmd; + buffer[1] = (req->arg >> 24) & 0xff; + buffer[2] = (req->arg >> 16) & 0xff; + buffer[3] = (req->arg >> 8) & 0xff; + buffer[4] = (req->arg >> 0) & 0xff; + return 0; + return sd_crc7(buffer, 5) != req->crc; /* TODO */ +} + +void sd_response_r1_make(struct sd_state_s *sd, + union sd_response_u *response, uint32_t last_status) +{ + int buffer[5]; + uint32_t mask = CARD_STATUS_B ^ ILLEGAL_COMMAND; + + response->r1.cmd = sd->current_cmd; + response->r1.status = (sd->card_status & ~mask) | (last_status & mask); + sd->card_status &= ~CARD_STATUS_C | APP_CMD; + + buffer[0] = 0x00 | response->r1.cmd; + buffer[1] = (response->r1.status >> 24) & 0xff; + buffer[2] = (response->r1.status >> 16) & 0xff; + buffer[3] = (response->r1.status >> 8) & 0xff; + buffer[4] = (response->r1.status >> 0) & 0xff; + response->r1.crc = sd_crc7(buffer, 5); +} + +void sd_response_r2_make(struct sd_state_s *sd, union sd_response_u *response) +{ + response->r2.reg[7] |= 0x01; +} + +void sd_response_r3_make(struct sd_state_s *sd, union sd_response_u *response) +{ + response->r3.ocr_reg = sd->ocr; +} + +void sd_response_r6_make(struct sd_state_s *sd, union sd_response_u *response) +{ + int buffer[5]; + + response->r6.cmd = sd->current_cmd; + response->r6.arg = sd->rca; + response->r6.status = + ((sd->card_status >> 8) & 0xc000) | + ((sd->card_status >> 6) & 0x2000) | + (sd->card_status & 0x1fff); + + buffer[0] = 0x00 | response->r6.cmd; + buffer[1] = (response->r6.arg >> 8) & 0xff; + buffer[2] = (response->r6.arg >> 0) & 0xff; + buffer[3] = (response->r6.status >> 8) & 0xff; + buffer[4] = (response->r6.status >> 0) & 0xff; + response->r6.crc = sd_crc7(buffer, 5); +} + +static void sd_reset(struct sd_state_s *sd, BlockDriverState *bdrv) +{ + uint32_t size; + uint64_t sect; + + bdrv_get_geometry(bdrv, §); + sect <<= 9; + + if (sect > 0x40000000) + size = 0x40000000; /* 1 gig */ + else + size = sect + 1; + + sect = (size >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) + 1; + + sd->state = sd_idle_state; + sd->rca = 0x0000; + sd_set_ocr(sd); + sd_set_scr(sd); + sd_set_cid(sd); + sd_set_csd(sd, size); + sd_set_cardstatus(sd); + sd_set_sdstatus(sd); + + sd->bdrv = bdrv; + + sd->wp_switch = bdrv_is_read_only(bdrv); + sd->wp_groups = (int *) qemu_mallocz(sizeof(int) * sect); + memset(sd->wp_groups, 0, sizeof(int) * sect); + memset(sd->function_group, 0, sizeof(int) * 6); + sd->erase_start = 0; + sd->erase_end = 0; + sd->size = size; + sd->blk_len = 0x200; + sd->pwd_len = 0; +} + +static void sd_cardchange(void *opaque) +{ + struct sd_state_s *sd = opaque; + if (sd->inserted_cb) + sd->inserted_cb(sd->opaque, bdrv_is_inserted(sd->bdrv)); + if (bdrv_is_inserted(sd->bdrv)) { + sd_reset(sd, sd->bdrv); + if (sd->readonly_cb) + sd->readonly_cb(sd->opaque, sd->wp_switch); + } +} + +struct sd_state_s *sd_init() +{ + struct sd_state_s *sd; + BlockDriverState *bs = bdrv_new("sd"); + bdrv_set_type_hint(bs, BDRV_TYPE_FLOPPY); + + if (sd_filename) { + if (bdrv_open(bs, sd_filename, + snapshot ? BDRV_O_SNAPSHOT : 0) < 0) + fprintf(stderr, "%s: Couldn't open %s\n", + __FUNCTION__, sd_filename); + } + + sd = (struct sd_state_s *) qemu_mallocz(sizeof(struct sd_state_s)); + sd_reset(sd, bs); + return sd; +} + +void sd_set_cb(struct sd_state_s *sd, void *opaque, + void (*readonly_cb)(void *, int), + void (*inserted_cb)(void *, int)) +{ + sd->opaque = opaque; + sd->readonly_cb = readonly_cb; + sd->inserted_cb = inserted_cb; + if (sd->readonly_cb) + sd->readonly_cb(sd->opaque, bdrv_is_read_only(sd->bdrv)); + if (sd->inserted_cb) + sd->inserted_cb(sd->opaque, bdrv_is_inserted(sd->bdrv)); + bdrv_set_change_cb(sd->bdrv, sd_cardchange, sd); +} + +static void sd_erase(struct sd_state_s *sd) +{ + int i, start, end; + if (!sd->erase_start || !sd->erase_end) { + sd->card_status |= ERASE_SEQ_ERROR; + return; + } + + start = sd->erase_start >> + (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); + end = sd->erase_end >> + (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); + sd->erase_start = 0; + sd->erase_end = 0; + sd->csd[14] |= 0x40; + + for (i = start; i <= end; i ++) + if (sd->wp_groups[i]) + sd->card_status |= WP_ERASE_SKIP; +} + +static uint32_t sd_wpbits(struct sd_state_s *sd, uint32_t addr) +{ + uint32_t i, wpnum; + uint32_t ret = 0; + + wpnum = addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); + + for (i = 0; i < 32; i ++, wpnum ++, addr += WPGROUP_SIZE) + if (addr < sd->size && sd->wp_groups[wpnum]) + ret |= (1 << i); + + return ret; +} + +static void sd_function_switch(struct sd_state_s *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 int sd_wp_addr(struct sd_state_s *sd, uint32_t addr) +{ + return sd->wp_groups[addr >> + (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)]; +} + +static void sd_lock_command(struct sd_state_s *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; + } + memset(sd->wp_groups, 0, sizeof(int) * (sd->size >> + (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT))); + sd->csd[14] &= ~0x10; + sd->card_status &= ~CARD_IS_LOCKED; + sd->pwd_len = 0; + /* Erasing the entire card here! */ + printf("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 union sd_response_u sd_normal_command(struct sd_state_s *sd, + struct sd_request_s req) +{ + uint32_t rca = 0x0000; + union sd_response_u response; + + if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc) + rca = req.arg >> 16; + + switch (req.cmd) { + /* Basic commands (Class 0 and Class 1) */ + case 0: /* CMD0: GO_IDLE_STATE */ + switch (sd->state) { + case sd_inactive_state: + return response; + + default: + sd->state = sd_idle_state; + sd_reset(sd, sd->bdrv); + return response; + } + break; + + case 2: /* CMD2: ALL_SEND_CID */ + switch (sd->state) { + case sd_ready_state: + sd->state = sd_identification_state; + memcpy(response.r2.reg, sd->cid, 16); + return response; + + default: + break; + } + break; + + case 3: /* CMD3: SEND_RELATIVE_ADDR */ + switch (sd->state) { + case sd_identification_state: + case sd_standby_state: + sd->state = sd_standby_state; + sd_set_rca(sd); + return response; + + default: + break; + } + break; + + case 4: /* CMD4: SEND_DSR */ + switch (sd->state) { + case sd_standby_state: + break; + + default: + break; + } + break; + + case 6: /* CMD6: SWITCH_FUNCTION */ + 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 response; + + default: + break; + } + break; + + case 7: /* CMD7: SELECT/DESELECT_CARD */ + switch (sd->state) { + case sd_standby_state: + if (sd->rca != rca) + return response; + + sd->state = sd_transfer_state; + return response; + + case sd_transfer_state: + case sd_sendingdata_state: + if (sd->rca == rca) + break; + + sd->state = sd_standby_state; + return response; + + case sd_disconnect_state: + if (sd->rca != rca) + return response; + + sd->state = sd_programming_state; + return response; + + case sd_programming_state: + if (sd->rca == rca) + break; + + sd->state = sd_disconnect_state; + return response; + + default: + break; + } + break; + + case 9: /* CMD9: SEND_CSD */ + switch (sd->state) { + case sd_standby_state: + if (sd->rca != rca) + return response; + + memcpy(response.r2.reg, sd->csd, sizeof(sd->csd)); + return response; + + default: + break; + } + break; + + case 10: /* CMD10: SEND_CID */ + switch (sd->state) { + case sd_standby_state: + if (sd->rca != rca) + return response; + + memcpy(response.r2.reg, sd->cid, sizeof(sd->cid)); + return response; + + default: + break; + } + break; + + case 11: /* CMD11: READ_DAT_UNTIL_STOP */ + 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 response; + + default: + break; + } + break; + + case 12: /* CMD12: STOP_TRANSMISSION */ + switch (sd->state) { + case sd_sendingdata_state: + sd->state = sd_transfer_state; + return response; + + case sd_receivingdata_state: + sd->state = sd_programming_state; + /* Bzzzzzzztt .... Operation complete. */ + sd->state = sd_transfer_state; + return response; + + default: + break; + } + break; + + case 13: /* CMD13: SEND_STATUS */ + switch (sd->mode) { + case sd_data_transfer_mode: + if (sd->rca != rca) + return response; + + return response; + + default: + break; + } + break; + + case 15: /* CMD15: GO_INACTIVE_STATE */ + switch (sd->mode) { + case sd_data_transfer_mode: + if (sd->rca != rca) + return response; + + sd->state = sd_inactive_state; + return response; + + 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 response; + + default: + break; + } + break; + + case 17: /* CMD17: READ_SINGLE_BLOCK */ + 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 response; + + default: + break; + } + break; + + case 18: /* CMD18: READ_MULTIPLE_BLOCK */ + 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 response; + + default: + break; + } + break; + + /* Block write commands (Class 4) */ + case 24: /* CMD24: WRITE_SINGLE_BLOCK */ + switch (sd->state) { + case sd_transfer_state: + sd->state = sd_receivingdata_state; + sd->data_start = req.arg; + 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 response; + + default: + break; + } + break; + + case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ + switch (sd->state) { + case sd_transfer_state: + sd->state = sd_receivingdata_state; + sd->data_start = req.arg; + 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 response; + + default: + break; + } + break; + + case 26: /* CMD26: PROGRAM_CID */ + switch (sd->state) { + case sd_transfer_state: + sd->state = sd_receivingdata_state; + sd->data_start = 0; + sd->data_offset = 0; + return response; + + default: + break; + } + break; + + case 27: /* CMD27: PROGRAM_CSD */ + switch (sd->state) { + case sd_transfer_state: + sd->state = sd_receivingdata_state; + sd->data_start = 0; + sd->data_offset = 0; + return response; + + default: + break; + } + break; + + /* Write protection (Class 6) */ + case 28: /* CMD28: SET_WRITE_PROT */ + switch (sd->state) { + case sd_transfer_state: + if (req.arg >= sd->size) { + sd->card_status = ADDRESS_ERROR; + return response; + } + + sd->state = sd_programming_state; + sd->wp_groups[req.arg >> (HWBLOCK_SHIFT + + SECTOR_SHIFT + WPGROUP_SHIFT)] = 1; + /* Bzzzzzzztt .... Operation complete. */ + sd->state = sd_transfer_state; + return response; + + default: + break; + } + break; + + case 29: /* CMD29: CLR_WRITE_PROT */ + switch (sd->state) { + case sd_transfer_state: + if (req.arg >= sd->size) { + sd->card_status = ADDRESS_ERROR; + return response; + } + + sd->state = sd_programming_state; + sd->wp_groups[req.arg >> (HWBLOCK_SHIFT + + SECTOR_SHIFT + WPGROUP_SHIFT)] = 0; + /* Bzzzzzzztt .... Operation complete. */ + sd->state = sd_transfer_state; + return response; + + 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 = req.arg; + sd->data_offset = 0; + return response; + + 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 response; + + default: + break; + } + break; + + case 33: /* CMD33: ERASE_WR_BLK_END */ + switch (sd->state) { + case sd_transfer_state: + sd->erase_end = req.arg; + return response; + + 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 response; + } + + sd->state = sd_programming_state; + sd_erase(sd); + /* Bzzzzzzztt .... Operation complete. */ + sd->state = sd_transfer_state; + return response; + + default: + break; + } + break; + + /* Lock card commands (Class 7) */ + case 42: /* CMD42: LOCK_UNLOCK */ + switch (sd->state) { + case sd_transfer_state: + sd->state = sd_receivingdata_state; + sd->data_start = 0; + sd->data_offset = 0; + return response; + + default: + break; + } + break; + + /* Application specific commands (Class 8) */ + case 55: /* CMD55: APP_CMD */ + if (sd->rca != rca) + return response; + + sd->card_status |= APP_CMD; + return response; + + case 56: /* CMD56: GEN_CMD */ + printf("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 response; + + default: + break; + } + break; + + default: + sd->card_status |= ILLEGAL_COMMAND; + + printf("SD: Unknown CMD%i\n", req.cmd); + return response; + } + + sd->card_status |= ILLEGAL_COMMAND; + printf("SD: CMD%i in a wrong state\n", req.cmd); + return response; +} + +static union sd_response_u sd_app_command(struct sd_state_s *sd, + struct sd_request_s req) { + uint32_t rca; + union sd_response_u response; + + if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc) + rca = req.arg >> 16; + + 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 response; + + default: + break; + } + break; + + case 13: /* ACMD13: SD_STATUS */ + switch (sd->state) { + case sd_transfer_state: + sd->data_start = 0; + sd->data_offset = 0; + return response; + + 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->data_start = 0; + sd->data_offset = 0; + return response; + + default: + break; + } + break; + + case 23: /* ACMD23: SET_WR_BLK_ERASE_COUNT */ + switch (sd->state) { + case sd_transfer_state: + return response; + + default: + break; + } + break; + + case 41: /* ACMD41: SD_APP_OP_COND */ + switch (sd->state) { + case sd_idle_state: + /* We accept any voltage. 10000 V is nothing. */ + if (req.arg) + sd->state = sd_ready_state; + + return response; + + 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 response; + + 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 response; + + default: + break; + } + break; + + default: + /* Fall back to standard commands. */ + sd->card_status &= ~APP_CMD; + return sd_normal_command(sd, req); + } + + printf("SD: ACMD%i in a wrong state\n", req.cmd); + return response; +} + +union sd_response_u sd_write_cmdline(struct sd_state_s *sd, + struct sd_request_s req, int *rsplen) { + uint32_t last_status = sd->card_status; + union sd_response_u response; + sd_rsp_type_t rtype; + + if (!bdrv_is_inserted(sd->bdrv)) { + *rsplen = 0; + return response; + } + + if (sd_req_crc_validate(&req)) { + sd->card_status &= ~COM_CRC_ERROR; + *rsplen = 0; + return response; + } + + sd->card_status &= ~CARD_STATUS_B; + sd_set_status(sd); + + if (last_status & CARD_IS_LOCKED) + if (((last_status & APP_CMD) && + (sd_acmd_type[req.cmd] == 0 || + sd_acmd_type[req.cmd] == 7 || + req.cmd == 41)) || + (!(last_status & APP_CMD) && + (sd_cmd_type[req.cmd] == 0 || + sd_cmd_type[req.cmd] == 7 || + req.cmd == 16 || req.cmd == 55))) { + sd->card_status |= ILLEGAL_COMMAND; + printf("SD: Card is locked\n"); + return response; + } + + if (last_status & APP_CMD) + response = sd_app_command(sd, req); + else + response = sd_normal_command(sd, req); + + if (last_status & APP_CMD) { + if (sd->card_status & APP_CMD) { + rtype = sd_acmd_response[req.cmd]; + sd->card_status &= ~APP_CMD; + } else + rtype = sd_cmd_response[req.cmd]; + } else + rtype = sd_cmd_response[req.cmd]; + + sd->current_cmd = req.cmd; + + switch (rtype) { + case sd_r1: + case sd_r1b: + sd_response_r1_make(sd, &response, last_status); + *rsplen = 48; + break; + + case sd_r2: + sd_response_r2_make(sd, &response); + *rsplen = 128; + break; + + case sd_r3: + sd_response_r3_make(sd, &response); + *rsplen = 48; + break; + + case sd_r6: + sd_response_r6_make(sd, &response); + *rsplen = 48; + break; + + case sd_nore: + default: + *rsplen = 0; + break; + } + + if (sd->card_status & ILLEGAL_COMMAND) + *rsplen = 0; + + return response; +} + +/* No real need for 64 bit addresses here */ +static void sd_blk_read(BlockDriverState *bdrv, + void *data, uint32_t addr, uint32_t len) +{ + uint8_t buf[512]; + uint32_t end = addr + len; + + if (!bdrv || bdrv_read(bdrv, addr >> 9, buf, 1) == -1) { + printf("sd_blk_read: read error on host side\n"); + return; + } + + if (end > (addr & ~511) + 512) { + memcpy(data, buf + (addr & 511), 512 - (addr & 511)); + + if (bdrv_read(bdrv, end >> 9, buf, 1) == -1) { + printf("sd_blk_read: read error on host side\n"); + return; + } + memcpy(data + 512 - (addr & 511), buf, end & 511); + } else + memcpy(data, buf + (addr & 511), len); +} + +static void sd_blk_write(BlockDriverState *bdrv, + void *data, uint32_t addr, uint32_t len) +{ + uint8_t buf[512]; + uint32_t end = addr + len; + + if ((addr & 511) || len < 512) + if (!bdrv || bdrv_read(bdrv, addr >> 9, buf, 1) == -1) { + printf("sd_blk_write: read error on host side\n"); + return; + } + + if (end > (addr & ~511) + 512) { + memcpy(buf + (addr & 511), data, 512 - (addr & 511)); + if (bdrv_write(bdrv, addr >> 9, buf, 1) == -1) { + printf("sd_blk_write: write error on host side\n"); + return; + } + + if (bdrv_read(bdrv, end >> 9, buf, 1) == -1) { + printf("sd_blk_write: read error on host side\n"); + return; + } + memcpy(buf, data + 512 - (addr & 511), end & 511); + if (bdrv_write(bdrv, end >> 9, buf, 1) == -1) + printf("sd_blk_write: write error on host side\n"); + } else { + memcpy(buf + (addr & 511), data, len); + if (!bdrv || bdrv_write(bdrv, addr >> 9, buf, 1) == -1) + printf("sd_blk_write: write error on host side\n"); + } +} + +#define BLK_READ_BLOCK(a, len) sd_blk_read(sd->bdrv, sd->data, a, len) +#define BLK_WRITE_BLOCK(a, len) sd_blk_write(sd->bdrv, sd->data, a, len) +#define APP_READ_BLOCK(a, len) memset(sd->data, 0xec, len) +#define APP_WRITE_BLOCK(a, len) + +void sd_write_datline(struct sd_state_s *sd, uint8_t value) +{ + int i; + + if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv)) + return; + + if (sd->state != sd_receivingdata_state) { + printf("sd_write_datline: 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 */ + 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; + 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->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: + printf("sd_write_datline: unknown command\n"); + break; + } +} + +uint8_t sd_read_datline(struct sd_state_s *sd) +{ + /* TODO: Append CRCs */ + uint8_t ret; + + if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv)) + return 0x00; + + if (sd->state != sd_sendingdata_state) { + printf("sd_read_datline: not in Sending-Data state\n"); + return 0x00; + } + + if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION)) + return 0x00; + + 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 11: /* CMD11: READ_DAT_UNTIL_STOP */ + if (sd->data_offset == 0) + BLK_READ_BLOCK(sd->data_start, sd->blk_len); + ret = sd->data[sd->data_offset ++]; + + if (sd->data_offset >= sd->blk_len) { + sd->data_start += sd->blk_len; + sd->data_offset = 0; + if (sd->data_start + sd->blk_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, sd->blk_len); + ret = sd->data[sd->data_offset ++]; + + if (sd->data_offset >= sd->blk_len) + sd->state = sd_transfer_state; + break; + + case 18: /* CMD18: READ_MULTIPLE_BLOCK */ + if (sd->data_offset == 0) + BLK_READ_BLOCK(sd->data_start, sd->blk_len); + ret = sd->data[sd->data_offset ++]; + + if (sd->data_offset >= sd->blk_len) { + sd->data_start += sd->blk_len; + sd->data_offset = 0; + if (sd->data_start + sd->blk_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: + printf("sd_read_datline: unknown command\n"); + return 0x00; + } + + return ret; +} diff --git a/hw/sd.h b/hw/sd.h new file mode 100644 index 0000000..a28df7f --- /dev/null +++ b/hw/sd.h @@ -0,0 +1,129 @@ +/* + * SD Memory Card emulation. Mostly correct for MMC too. + * + * Copyright (c) 2006 Andrzej Zaborowski + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#ifndef __hw_sd_h +#define __hw_sd_h 1 + +#include + +#define OUT_OF_RANGE (1 << 31) +#define ADDRESS_ERROR (1 << 30) +#define BLOCK_LEN_ERROR (1 << 29) +#define ERASE_SEQ_ERROR (1 << 28) +#define ERASE_PARAM (1 << 27) +#define WP_VIOLATION (1 << 26) +#define CARD_IS_LOCKED (1 << 25) +#define LOCK_UNLOCK_FAILED (1 << 24) +#define COM_CRC_ERROR (1 << 23) +#define ILLEGAL_COMMAND (1 << 22) +#define CARD_ECC_FAILED (1 << 21) +#define CC_ERROR (1 << 20) +#define SD_ERROR (1 << 19) +#define CID_CSD_OVERWRITE (1 << 16) +#define WP_ERASE_SKIP (1 << 15) +#define CARD_ECC_DISABLED (1 << 14) +#define ERASE_RESET (1 << 13) +#define CURRENT_STATE (7 << 9) +#define READY_FOR_DATA (1 << 8) +#define APP_CMD (1 << 5) +#define AKE_SEQ_ERROR (1 << 3) + +typedef enum { + sd_none = -1, + sd_bc = 0, /* broadcast -- no response */ + sd_bcr, /* broadcast with response */ + sd_ac, /* addressed -- no data transfer */ + sd_adtc, /* addressed with data transfer */ +} sd_cmd_type_t; + +typedef enum { + sd_nore = 0, /* no response */ + sd_r1, /* normal response command */ + sd_r2, /* CID, CSD registers */ + sd_r3, /* OCR register */ + sd_r6 = 6, /* Published RCA response */ + sd_r1b = -1, +} sd_rsp_type_t; + +struct sd_request_s { + uint8_t cmd; + uint32_t arg; + uint8_t crc; +}; + +struct sd_response_none_s { +}; + +struct sd_response_r1_s { + uint8_t cmd; + uint32_t status; + uint8_t crc; +}; + +struct sd_response_r1b_s { + uint8_t cmd; + uint32_t status; + uint8_t crc; +}; + +struct sd_response_r2_s { + uint16_t reg[8]; +}; + +struct sd_response_r3_s { + uint32_t ocr_reg; +}; + +struct sd_response_r6_s { + uint8_t cmd; + uint16_t arg; + uint16_t status; + uint8_t crc; +}; + +union sd_response_u { + struct sd_response_none_s none; + struct sd_response_r1_s r1; + struct sd_response_r1b_s r1b; + struct sd_response_r2_s r2; + struct sd_response_r3_s r3; + struct sd_response_r6_s r6; +}; + +struct sd_state_s; + +struct sd_state_s *sd_init(void); +union sd_response_u sd_write_cmdline(struct sd_state_s *sd, + struct sd_request_s req, int *rsplen); +void sd_write_datline(struct sd_state_s *sd, uint8_t value); +uint8_t sd_read_datline(struct sd_state_s *sd); +void sd_set_cb(struct sd_state_s *sd, void *opaque, + void (*readonly_cb)(void *, int), + void (*inserted_cb)(void *, int)); + +#endif /* __hw_sd_h */ diff --git a/vl.c b/vl.c index d4e12ba..e5b53d2 100644 --- a/vl.c +++ b/vl.c @@ -184,6 +184,8 @@ const char *vnc_display; int acpi_enabled = 1; int fd_bootchk = 1; int no_reboot = 0; +int snapshot = 0; +const char *sd_filename = 0; int daemonize = 0; const char *option_rom[MAX_OPTION_ROMS]; int nb_option_roms; @@ -6405,6 +6407,7 @@ void help(void) "-hda/-hdb file use 'file' as IDE hard disk 0/1 image\n" "-hdc/-hdd file use 'file' as IDE hard disk 2/3 image\n" "-cdrom file use 'file' as IDE cdrom image (cdrom is ide1 master)\n" + "-sd file use 'file' as SecureDigital card image\n" "-boot [a|c|d|n] boot on floppy (a), hard disk (c), CD-ROM (d), or network (n)\n" "-snapshot write to temporary files instead of disk image files\n" #ifdef CONFIG_SDL @@ -6541,6 +6544,7 @@ enum { QEMU_OPTION_hdc, QEMU_OPTION_hdd, QEMU_OPTION_cdrom, + QEMU_OPTION_sd, QEMU_OPTION_boot, QEMU_OPTION_snapshot, #ifdef TARGET_I386 @@ -6617,6 +6621,7 @@ const QEMUOption qemu_options[] = { { "hdc", HAS_ARG, QEMU_OPTION_hdc }, { "hdd", HAS_ARG, QEMU_OPTION_hdd }, { "cdrom", HAS_ARG, QEMU_OPTION_cdrom }, + { "sd", HAS_ARG, QEMU_OPTION_sd }, { "boot", HAS_ARG, QEMU_OPTION_boot }, { "snapshot", 0, QEMU_OPTION_snapshot }, #ifdef TARGET_I386 @@ -6896,7 +6901,7 @@ int main(int argc, char **argv) const char *gdbstub_port; #endif int i, cdrom_index; - int snapshot, linux_boot; + int linux_boot; const char *initrd_filename; const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD]; const char *kernel_filename, *kernel_cmdline; @@ -7072,6 +7077,9 @@ int main(int argc, char **argv) cdrom_index = -1; } break; + case QEMU_OPTION_sd: + sd_filename = optarg; + break; case QEMU_OPTION_snapshot: snapshot = 1; break; @@ -7548,7 +7556,7 @@ int main(int argc, char **argv) fd_table[i] = bdrv_new(buf); bdrv_set_type_hint(fd_table[i], BDRV_TYPE_FLOPPY); } - if (fd_filename[i] != '\0') { + if (fd_filename[i][0] != '\0') { if (bdrv_open(fd_table[i], fd_filename[i], snapshot ? BDRV_O_SNAPSHOT : 0) < 0) { fprintf(stderr, "qemu: could not open floppy disk image '%s'\n", diff --git a/vl.h b/vl.h index 563f437..cfafc08 100644 --- a/vl.h +++ b/vl.h @@ -156,6 +156,8 @@ extern int kqemu_allowed; extern int win2k_install_hack; extern int usb_enabled; extern int smp_cpus; +extern int snapshot; +extern const char *sd_filename; extern int no_quit; extern int semihosting_enabled; extern int autostart; -- 1.4.4.3