Re: [PATCH v2 03/12] cmd: bootefi: carve out EFI boot manager interface

[AKASHI Takahiro <takahiro.akashi@linaro.org>]

On Tue, Nov 21, 2023 at 04:38:12AM +0100, Heinrich Schuchardt wrote:
> On 11/21/23 02:29, AKASHI Takahiro wrote:
> > Carve EFI boot manager related code out of do_bootefi_image() in order
> > to move boot manager specific code into library directory in the later
> > commit.
> > 
> > Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
> > ---
> >   cmd/bootefi.c | 43 ++++++++++++++++++++++++-------------------
> >   1 file changed, 24 insertions(+), 19 deletions(-)
> > 
> > diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> > index e9e5ab67a1f5..87910c42333a 100644
> > --- a/cmd/bootefi.c
> > +++ b/cmd/bootefi.c
> > @@ -413,28 +413,40 @@ out:
> >   }
> > 
> >   /**
> > - * do_efibootmgr() - execute EFI boot manager
> > + * efi_bootmgr_run() - execute EFI boot manager
> > + * fdt:	Flat device tree
> > + *
> > + * Invoke EFI boot manager and execute a binary depending on
> > + * boot options. If @fdt is not NULL, it will be passed to
> > + * the executed binary.
> 
> How about the fallback to the control device-tree?

efi_install_fdt() will take care of that if fdt == EFI_FDT_INTERNAL_USE.
I didn't change any semantics.
I will add some description here to clarify it.

> How about booting with ACPI?

Not sure what is your concern, but
I didn't change any semantics in bootmgr use-case.

-Takahiro Akashi

> 
> Best regards
> 
> Heinrich
> 
> >    *
> >    * Return:	status code
> >    */
> > -static int do_efibootmgr(void)
> > +static efi_status_t efi_bootmgr_run(void *fdt)
> >   {
> >   	efi_handle_t handle;
> > -	efi_status_t ret;
> >   	void *load_options;
> > +	efi_status_t ret;
> > 
> > -	ret = efi_bootmgr_load(&handle, &load_options);
> > +	/* Initialize EFI drivers */
> > +	ret = efi_init_obj_list();
> >   	if (ret != EFI_SUCCESS) {
> > -		log_notice("EFI boot manager: Cannot load any image\n");
> > +		log_err("Error: Cannot initialize UEFI sub-system, r = %lu\n",
> > +			ret & ~EFI_ERROR_MASK);
> >   		return CMD_RET_FAILURE;
> >   	}
> > 
> > -	ret = do_bootefi_exec(handle, load_options);
> > -
> > +	ret = efi_install_fdt(fdt);
> >   	if (ret != EFI_SUCCESS)
> > -		return CMD_RET_FAILURE;
> > +		return ret;
> > 
> > -	return CMD_RET_SUCCESS;
> > +	ret = efi_bootmgr_load(&handle, &load_options);
> > +	if (ret != EFI_SUCCESS) {
> > +		log_notice("EFI boot manager: Cannot load any image\n");
> > +		return ret;
> > +	}
> > +
> > +	return do_bootefi_exec(handle, load_options);
> >   }
> > 
> >   /**
> > @@ -624,21 +636,14 @@ static int do_bootefi(struct cmd_tbl *cmdtp, int flag, int argc,
> > 
> >   	if (IS_ENABLED(CONFIG_CMD_BOOTEFI_BOOTMGR) &&
> >   	    !strcmp(argv[1], "bootmgr")) {
> > -		/* Initialize EFI drivers */
> > -		ret = efi_init_obj_list();
> > -		if (ret != EFI_SUCCESS) {
> > -			log_err("Error: Cannot initialize UEFI sub-system, r = %lu\n",
> > -				ret & ~EFI_ERROR_MASK);
> > -			return CMD_RET_FAILURE;
> > -		}
> > +		ret = efi_bootmgr_run(fdt);
> > 
> > -		ret = efi_install_fdt(fdt);
> >   		if (ret == EFI_INVALID_PARAMETER)
> >   			return CMD_RET_USAGE;
> > -		else if (ret != EFI_SUCCESS)
> > +		else if (ret)
> >   			return CMD_RET_FAILURE;
> > 
> > -		return do_efibootmgr();
> > +		return CMD_RET_SUCCESS;
> >   	}
> > 
> >   	if (IS_ENABLED(CONFIG_CMD_BOOTEFI_SELFTEST) &&
>