Re: [PATCH 06/23] hw/sd/sdcard: Use Load/Store API to fill some CID/CSD registers

[Cédric Le Goater]

On 6/21/24 10:05 AM, Philippe Mathieu-Daudé wrote:
> The ld/st API helps noticing CID or CSD bytes refer
> to the same field. Multi-bytes fields are stored MSB
> first in CID / CSD.
>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>


Reviewed-by: Cédric Le Goater <clg@redhat.com>

Thanks,

C.


> ---
>   hw/sd/sd.c | 9 ++-------
>   1 file changed, 2 insertions(+), 7 deletions(-)
>
> diff --git a/hw/sd/sd.c b/hw/sd/sd.c
> index 24415cb9f0..b0cd30c657 100644
> --- a/hw/sd/sd.c
> +++ b/hw/sd/sd.c
> @@ -393,10 +393,7 @@ static void sd_set_cid(SDState *sd)
>       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;
> +    stl_be_p(&sd->cid[9], 0xdeadbeef); /* Fake serial number (PSN) */
>       sd->cid[13] = 0x00 |    /* Manufacture date (MDT) */
>           ((MDT_YR - 2000) / 10);
>       sd->cid[14] = ((MDT_YR % 10) << 4) | MDT_MON;
> @@ -462,9 +459,7 @@ static void sd_set_csd(SDState *sd, uint64_t size)
>           sd->csd[4] = 0x5b;
>           sd->csd[5] = 0x59;
>           sd->csd[6] = 0x00;
> -        sd->csd[7] = (size >> 16) & 0xff;
> -        sd->csd[8] = (size >> 8) & 0xff;
> -        sd->csd[9] = (size & 0xff);
> +        st24_be_p(&sd->csd[7], size);
>           sd->csd[10] = 0x7f;
>           sd->csd[11] = 0x80;
>           sd->csd[12] = 0x0a;