[PATCH 1/1] efi_loader: support booting semihosting file

[Andre Przywara]

On Sat, 13 May 2023 02:30:44 +0200
Heinrich Schuchardt <heinrich.schuchardt at canonical.com> wrote:

> Executing an EFI binary fails for files loaded via semihosting.
> 
> Construct a dummy device path for EFI binaries loaded via semihosting.
> 
> A future complete solution may include the creation of a handle with a
> simple file system protocol.
> 
> Reported-by: Andre Przywara <andre.przywara at arm.com>
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>

Tested-by: Andre Przywara <andre.przywara at arm.com>

Thanks,
Andre

> ---
>  lib/efi_loader/efi_device_path.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
> index e2e98a39be..20ad948498 100644
> --- a/lib/efi_loader/efi_device_path.c
> +++ b/lib/efi_loader/efi_device_path.c
> @@ -1203,7 +1203,8 @@ efi_status_t efi_dp_from_name(const char *dev, const char *devnr,
>  	} else if (!strcmp(dev, "Uart")) {
>  		if (device)
>  			*device = efi_dp_from_uart();
> -	} else if (!strcmp(dev, "Mem")) {
> +	} else if (!strcmp(dev, "Mem") || !strcmp(dev, "hostfs"))  {
> +		/* loadm command and semihosting */
>  		efi_get_image_parameters(&image_addr, &image_size);
>  
>  		if (device)