@@ -91,11 +91,13 @@ struct SDState {
int function_group[6];
int spi;
+ int emmc;
int current_cmd;
int blk_written;
uint64_t data_start;
uint32_t data_offset;
uint8_t data[512];
+ uint8_t ext_csd[512];
qemu_irq readonly_cb;
qemu_irq inserted_cb;
BlockDriverState *bdrv;
@@ -196,7 +198,7 @@ static uint16_t sd_crc16(void *message, size_t width)
static void sd_set_ocr(SDState *sd)
{
/* All voltages OK, card power-up OK, Standard Capacity SD Memory Card */
- sd->ocr = 0x80ffff00;
+ sd->ocr = 0x80ffff80;
}
static void sd_set_scr(SDState *sd)
@@ -250,13 +252,85 @@ static const uint8_t sd_csd_rw_mask[16] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xfe,
};
+static void mmc_set_ext_csd(SDState *sd, uint64_t size)
+{
+ uint32_t sectcount = size >> HWBLOCK_SHIFT;
+
+ memset(sd->ext_csd, 0, 512);
+ sd->ext_csd[504] = 0x1; /* supported command sets */
+ sd->ext_csd[503] = 0x1; /* HPI features */
+ sd->ext_csd[502] = 0x1; /* Background operations support */
+ sd->ext_csd[241] = 0xA; /* 1st initialization time after partitioning */
+ sd->ext_csd[232] = 0x1; /* Trim multiplier */
+ sd->ext_csd[231] = 0x15; /* Secure feature support */
+ sd->ext_csd[230] = 0x96; /* Secure erase support */
+ sd->ext_csd[229] = 0x96; /* Secure TRIM multiplier */
+ sd->ext_csd[228] = 0x7; /* Boot information */
+ sd->ext_csd[226] = 0x8; /* Boot partition size */
+ sd->ext_csd[225] = 0x6; /* Access size */
+ sd->ext_csd[224] = 0x4; /* HC Erase unit size */
+ sd->ext_csd[223] = 0x1; /* HC erase timeout */
+ sd->ext_csd[222] = 0x1; /* Reliable write sector count */
+ sd->ext_csd[221] = 0x4; /* HC write protect group size */
+ sd->ext_csd[220] = 0x8; /* Sleep current VCC */
+ sd->ext_csd[219] = 0x7; /* Sleep current VCCQ */
+ sd->ext_csd[217] = 0x11; /* Sleep/Awake timeout */
+ sd->ext_csd[215] = (sectcount >> 24) & 0xff; /* Sector count */
+ sd->ext_csd[214] = (sectcount >> 16) & 0xff; /* ... */
+ sd->ext_csd[213] = (sectcount >> 8) & 0xff; /* ... */
+ sd->ext_csd[212] = (sectcount & 0xff); /* ... */
+ sd->ext_csd[210] = 0xa; /* Min write perf for 8bit@52Mhz */
+ sd->ext_csd[209] = 0xa; /* Min read perf for 8bit@52Mhz */
+ sd->ext_csd[208] = 0xa; /* Min write perf for 4bit@52Mhz */
+ sd->ext_csd[207] = 0xa; /* Min read perf for 4bit@52Mhz */
+ sd->ext_csd[206] = 0xa; /* Min write perf for 4bit@26Mhz */
+ sd->ext_csd[205] = 0xa; /* Min read perf for 4bit@26Mhz */
+ sd->ext_csd[199] = 0x1; /* Partition switching timing */
+ sd->ext_csd[198] = 0x1; /* Out-of-interrupt busy timing */
+ sd->ext_csd[196] = 0x7; /* Card type */
+ sd->ext_csd[194] = 0x2; /* CSD Structure version */
+ sd->ext_csd[192] = 0x5; /* Extended CSD revision */
+ sd->ext_csd[168] = 0x1; /* RPMB size */
+ sd->ext_csd[160] = 0x3; /* Partinioning support */
+ sd->ext_csd[159] = 0x00; /* Max enhanced area size */
+ sd->ext_csd[158] = 0x00; /* ... */
+ sd->ext_csd[157] = 0xEC; /* ... */
+}
+
static void sd_set_csd(SDState *sd, uint64_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;
- if (size <= 0x40000000) { /* Standard Capacity SD */
+ if (sd->emmc) { /* eMMC */
+ sd->csd[0] = 0xd0;
+ sd->csd[1] = 0x0f;
+ sd->csd[2] = 0x00;
+ sd->csd[3] = 0x32;
+ sd->csd[4] = 0x0f;
+ if (size <= 0x80000000ULL) {
+ /* use 1k blocks */
+ uint32_t csize1k = (size >> (CMULT_SHIFT + 10)) - 1;
+ sd->csd[5] = 0x5a;
+ sd->csd[6] = 0x80 | ((csize1k >> 10) & 0xf);
+ sd->csd[7] = (csize1k >> 2) & 0xff;
+ } else { /* >= 2GB : size stored in ext CSD, block addressing */
+ sd->csd[5] = 0x59;
+ sd->csd[6] = 0x8f;
+ sd->csd[7] = 0xff;
+ sd->ocr |= 1 << 30;
+ }
+ sd->csd[8] = 0xff;
+ sd->csd[9] = 0xff;
+ sd->csd[10] = 0xf7;
+ sd->csd[11] = 0xfe;
+ sd->csd[12] = 0x49;
+ sd->csd[13] = 0x10;
+ sd->csd[14] = 0x00;
+ sd->csd[15] = (sd_crc7(sd->csd, 15) << 1) | 1;
+ mmc_set_ext_csd(sd, size);
+ } else if (size <= 0x40000000) { /* Standard Capacity SD */
sd->csd[0] = 0x00; /* CSD structure */
sd->csd[1] = 0x26; /* Data read access-time-1 */
sd->csd[2] = 0x00; /* Data read access-time-2 */
@@ -305,9 +379,13 @@ static void sd_set_csd(SDState *sd, uint64_t size)
}
}
-static void sd_set_rca(SDState *sd)
+static void sd_set_rca(SDState *sd, uint16_t value)
{
- sd->rca += 0x4567;
+ if (sd->emmc) {
+ sd->rca = value;
+ } else {
+ sd->rca += 0x4567;
+ }
}
#define CARD_STATUS_A 0x02004100
@@ -343,6 +421,8 @@ static void sd_response_r1_make(SDState *sd,
uint32_t status;
status = (sd->card_status & ~mask) | (last_status & mask);
+ status &= ~CURRENT_STATE;
+ status |= sd->state << 9;
sd->card_status &= ~CARD_STATUS_C | APP_CMD;
response[0] = (status >> 24) & 0xff;
@@ -446,6 +526,7 @@ SDState *sd_init(BlockDriverState *bs, int is_spi)
sd = (SDState *) qemu_mallocz(sizeof(SDState));
sd->buf = qemu_blockalign(bs, 512);
sd->spi = is_spi;
+ sd->emmc = !bdrv_is_removable(bs);
sd->enable = 1;
sd_reset(sd, bs);
if (sd->bdrv) {
@@ -627,6 +708,11 @@ static sd_rsp_type_t sd_normal_command(SDState *sd,
break;
case 1: /* CMD1: SEND_OP_CMD */
+ if (sd->emmc) {
+ sd->state = sd_ready_state;
+ return sd_r3;
+ }
+
if (!sd->spi)
goto bad_cmd;
@@ -653,8 +739,8 @@ static sd_rsp_type_t sd_normal_command(SDState *sd,
case sd_identification_state:
case sd_standby_state:
sd->state = sd_standby_state;
- sd_set_rca(sd);
- return sd_r6;
+ sd_set_rca(sd, req.arg >> 16);
+ return sd->emmc ? sd_r1 : sd_r6;
default:
break;
@@ -678,6 +764,9 @@ static sd_rsp_type_t sd_normal_command(SDState *sd,
return sd_r0;
case 6: /* CMD6: SWITCH_FUNCTION */
+ if (sd->emmc) {
+ return sd_r1b;
+ } else {
if (sd->spi)
goto bad_cmd;
switch (sd->mode) {
@@ -691,6 +780,7 @@ static sd_rsp_type_t sd_normal_command(SDState *sd,
default:
break;
}
+ }
break;
case 7: /* CMD7: SELECT/DESELECT_CARD */
@@ -731,22 +821,36 @@ static sd_rsp_type_t sd_normal_command(SDState *sd,
}
break;
- case 8: /* CMD8: SEND_IF_COND */
- /* Physical Layer Specification Version 2.00 command */
- switch (sd->state) {
- case sd_idle_state:
- sd->vhs = 0;
+ case 8: /* CMD8: SEND_IF_COND / SEND_EXT_CSD */
+ if (sd->emmc) {
+ switch (sd->state) {
+ case sd_transfer_state:
+ /* MMC : Sends the EXT_CSD register as a Block of data */
+ sd->state = sd_sendingdata_state;
+ memcpy(sd->data, sd->ext_csd, 512);
+ sd->data_start = addr;
+ sd->data_offset = 0;
+ return sd_r1;
+ default:
+ break;
+ }
+ } else {
+ /* SD 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;
+ /* 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;
+ /* Accept. */
+ sd->vhs = req.arg;
+ return sd_r7;
- default:
- break;
+ default:
+ break;
+ }
}
break;
@@ -1115,6 +1219,11 @@ static sd_rsp_type_t sd_normal_command(SDState *sd,
/* Application specific commands (Class 8) */
case 55: /* CMD55: APP_CMD */
+ /* Not supported by MMC */
+ if (sd->emmc) {
+ return sd_r0;
+ }
+
if (sd->rca != rca)
return sd_r0;
@@ -1566,6 +1675,14 @@ uint8_t sd_read_data(SDState *sd)
sd->state = sd_transfer_state;
break;
+ case 8: /* CMD8: SEND_EXT_CSD on MMC */
+ ret = sd->data[sd->data_offset++];
+
+ if (sd->data_offset >= 512) {
+ sd->state = sd_transfer_state;
+ }
+ break;
+
case 9: /* CMD9: SEND_CSD */
case 10: /* CMD10: SEND_CID */
ret = sd->data[sd->data_offset ++];
The parameters mimick a real 4GB eMMC, but it can be set to various sizes. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> --- hw/sd.c | 155 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-------- 1 files changed, 136 insertions(+), 19 deletions(-)