Commit 49fb7381 authored by Philippe Mathieu-Daudé's avatar Philippe Mathieu-Daudé Committed by Peter Maydell
Browse files

sdcard: handle CMD54 (SDIO) 



Linux uses it to poll the bus before polling for a card.

Signed-off-by: default avatarPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: default avatarAlistair Francis <alistair.francis@xilinx.com>
Message-id: 20180215221325.7611-10-f4bug@amsat.org
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent da26e3f3

hw/sd/sd.c

+2 −3
Original line number Diff line number Diff line
@@ -1371,9 +1371,8 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, 
        }

        break;



    case 52:

    case 53:

        /* CMD52, CMD53: reserved for SDIO cards

    case 52 ... 54:

        /* CMD52, CMD53, CMD54: 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