[v1] eMMC support

[RFC PATCH 13/15] sd: emmc: Subtract bootarea size from blk

Posted by Sai Pavan Boddu 4 years, 12 months ago

From: Joel Stanley <joel@jms.id.au>

The userdata size is derived from the file the user passes on the
command line, but we must take into account the boot areas.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 hw/sd/sd.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 55c1104..a2f39c9 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -658,6 +658,11 @@ static void sd_reset(DeviceState *dev)
     }
     size = sect << 9;
 
+    if (sd->emmc) {
+        unsigned int boot_capacity = sd->ext_csd[EXT_CSD_BOOT_MULT] << 17;
+        size -= boot_capacity * 2;
+    }
+
     sect = sd_addr_to_wpnum(size) + 1;
 
     sd->state = sd_idle_state;
-- 
2.7.4

Re: [RFC PATCH 13/15] sd: emmc: Subtract bootarea size from blk

Posted by Alistair Francis 4 years, 12 months ago

On Thu, Feb 11, 2021 at 12:25 AM Sai Pavan Boddu
<sai.pavan.boddu@xilinx.com> wrote:
>
> From: Joel Stanley <joel@jms.id.au>
>
> The userdata size is derived from the file the user passes on the
> command line, but we must take into account the boot areas.
>
> Signed-off-by: Joel Stanley <joel@jms.id.au>
> Signed-off-by: Cédric Le Goater <clg@kaod.org>

Acked-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  hw/sd/sd.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/hw/sd/sd.c b/hw/sd/sd.c
> index 55c1104..a2f39c9 100644
> --- a/hw/sd/sd.c
> +++ b/hw/sd/sd.c
> @@ -658,6 +658,11 @@ static void sd_reset(DeviceState *dev)
>      }
>      size = sect << 9;
>
> +    if (sd->emmc) {
> +        unsigned int boot_capacity = sd->ext_csd[EXT_CSD_BOOT_MULT] << 17;
> +        size -= boot_capacity * 2;
> +    }
> +
>      sect = sd_addr_to_wpnum(size) + 1;
>
>      sd->state = sd_idle_state;
> --
> 2.7.4
>
>