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hw/sd: Add SDHC support for SD card SPI-mode 

In SPI-mode, SD card's OCR register: Card Capacity Status (CCS) bit
is not set to 1 correclty when the assigned SD image size is larger
than 2GB (SDHC). This will cause the SD card to be indentified as SDSC
incorrectly. CCS bit should be set to 1 if we are using SDHC.

Also, as there's no power up emulation in SPI-mode.
The OCR register: Card power up status bit bit (busy) should also
be set to 1 when reset. (busy bit is set to LOW if the card has not
finished the power up routine.)

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Jim Shu <jim.shu@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211228125719.14712-1-frank.chang@sifive.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
This commit is contained in:
Frank Chang 2021-12-28 20:57:17 +08:00 committed by Philippe Mathieu-Daudé
parent 6947feca58
commit b66f73a0cb
1 changed files with 17 additions and 7 deletions
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24
hw/sd/sd.c
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@ -290,12 +290,6 @@ FIELD(OCR, CARD_POWER_UP, 31, 1)
| R_OCR_CARD_CAPACITY_MASK \
| R_OCR_CARD_POWER_UP_MASK)
static void sd_set_ocr(SDState *sd)
{
/* All voltages OK */
sd->ocr = R_OCR_VDD_VOLTAGE_WIN_HI_MASK;
}
static void sd_ocr_powerup(void *opaque)
{
SDState *sd = opaque;
@ -311,6 +305,22 @@ static void sd_ocr_powerup(void *opaque)
}
}
static void sd_set_ocr(SDState *sd)
{
/* All voltages OK */
sd->ocr = R_OCR_VDD_VOLTAGE_WIN_HI_MASK;
if (sd->spi) {
/*
* We don't need to emulate power up sequence in SPI-mode.
* Thus, the card's power up status bit should be set to 1 when reset.
* The card's capacity status bit should also be set if SD card size
* is larger than 2GB for SDHC support.
*/
sd_ocr_powerup(sd);
}
}
static void sd_set_scr(SDState *sd)
{
sd->scr[0] = 0 << 4; /* SCR structure version 1.0 */
@ -560,6 +570,7 @@ static void sd_reset(DeviceState *dev)
sd->state = sd_idle_state;
sd->rca = 0x0000;
sd->size = size;
sd_set_ocr(sd);
sd_set_scr(sd);
sd_set_cid(sd);
@ -574,7 +585,6 @@ static void sd_reset(DeviceState *dev)
memset(sd->function_group, 0, sizeof(sd->function_group));
sd->erase_start = INVALID_ADDRESS;
sd->erase_end = INVALID_ADDRESS;
sd->size = size;
sd->blk_len = 0x200;
sd->pwd_len = 0;
sd->expecting_acmd = false;