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hw/sd/sdcard: Basis for eMMC support

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Since eMMC are soldered on boards, it is not user-creatable.

RCA register is initialized to 0x0001, per spec v4.3,
chapter 8.5 "RCA register":

  The default value of the RCA register is 0x0001.
  The value 0x0000 is reserved to set all cards into
  the Stand-by State with CMD7.

The CSD register is very similar to SD one, except
the version announced is v4.3.

eMMC CID register is slightly different from SD:
- One extra PNM (5 -> 6)
- MDT is only 1 byte (2 -> 1).

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Cédric Le Goater <clg@redhat.com>
Message-Id: <20240712162719.88165-2-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2022-05-30 20:06:20 +02:00 • committed by Philippe Mathieu-Daudé
parent 959269e910
commit 1b5a561c73
2 changed files with 109 additions and 1 deletions
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3
include/hw/sd/sd.h
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@ -96,6 +96,9 @@ OBJECT_DECLARE_TYPE(SDState, SDCardClass, SD_CARD)
#define TYPE_SD_CARD_SPI "sd-card-spi"
DECLARE_INSTANCE_CHECKER(SDState, SD_CARD_SPI, TYPE_SD_CARD_SPI)
#define TYPE_EMMC "emmc"
DECLARE_INSTANCE_CHECKER(SDState, EMMC, TYPE_EMMC)
struct SDCardClass {
/*< private >*/
DeviceClass parent_class;