[U-Boot] [PATCH 3/5] cmd: bootefi: carve out fdt parameter handling

[AKASHI Takahiro]

On Sun, Dec 23, 2018 at 03:08:52AM +0100, Alexander Graf wrote:
> 
> 
> On 18.12.18 06:02, AKASHI Takahiro wrote:
> > The current way how command parameters, particularly "fdt addr," are
> > handled makes it a bit complicated to add a subcommand-specific parameter.
> > So just refactor the code and extract efi_handle_fdt().
> > 
> > This commit is a preparatory change for enhancing bootmgr sub-command.
> > 
> > Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> > 
> > Revert "fixup! fixup! cmd: bootefi: carve out fdt parameter handling"
> > 
> > This reverts commit abc315426e37bdfb96a48d23c1fc96399b68baa5.
> 
> You sure you wanted this to be part of the commit message? ;)

Damn!

-Takahiro Akashi


> > ---
> >  cmd/bootefi.c | 49 +++++++++++++++++++++++++++++++++----------------
> >  cmd/bootefi.h |  3 +++
> >  2 files changed, 36 insertions(+), 16 deletions(-)
> >  create mode 100644 cmd/bootefi.h
> > 
> > diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> > index 3ebae1cdad08..796ca6ee69ec 100644
> > --- a/cmd/bootefi.c
> > +++ b/cmd/bootefi.c
> > @@ -279,6 +279,31 @@ static void bootefi_run_finish(struct efi_loaded_image_obj *image_obj,
> >  	efi_delete_handle(&image_obj->header);
> >  }
> >  
> > +int efi_handle_fdt(char *fdt_opt)
> > +{
> > +	unsigned long fdt_addr;
> > +	efi_status_t r;
> > +
> > +	if (fdt_opt) {
> > +		fdt_addr = simple_strtoul(fdt_opt, NULL, 16);
> > +		if (!fdt_addr && *fdt_opt != '0')
> > +			return CMD_RET_USAGE;
> > +
> > +		/* Install device tree */
> > +		r = efi_install_fdt(fdt_addr);
> > +		if (r != EFI_SUCCESS) {
> > +			printf("ERROR: failed to install device tree\n");
> > +			return CMD_RET_FAILURE;
> > +		}
> > +	} else {
> > +		/* Remove device tree. EFI_NOT_FOUND can be ignored here */
> > +		efi_install_configuration_table(&efi_guid_fdt, NULL);
> > +		printf("WARNING: booting without device tree\n");
> > +	}
> > +
> > +	return CMD_RET_SUCCESS;
> > +}
> > +
> >  /**
> >   * do_bootefi_exec() - execute EFI binary
> >   *
> > @@ -473,7 +498,6 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
> >  	unsigned long addr;
> >  	char *saddr;
> >  	efi_status_t r;
> > -	unsigned long fdt_addr;
> >  
> >  	/* Allow unaligned memory access */
> >  	allow_unaligned();
> > @@ -489,21 +513,6 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
> >  	if (argc < 2)
> >  		return CMD_RET_USAGE;
> >  
> > -	if (argc > 2) {
> > -		fdt_addr = simple_strtoul(argv[2], NULL, 16);
> > -		if (!fdt_addr && *argv[2] != '0')
> > -			return CMD_RET_USAGE;
> > -		/* Install device tree */
> > -		r = efi_install_fdt(fdt_addr);
> > -		if (r != EFI_SUCCESS) {
> > -			printf("ERROR: failed to install device tree\n");
> > -			return CMD_RET_FAILURE;
> > -		}
> > -	} else {
> > -		/* Remove device tree. EFI_NOT_FOUND can be ignored here */
> > -		efi_install_configuration_table(&efi_guid_fdt, NULL);
> > -		printf("WARNING: booting without device tree\n");
> > -	}
> >  #ifdef CONFIG_CMD_BOOTEFI_HELLO
> >  	if (!strcmp(argv[1], "hello")) {
> >  		ulong size = __efi_helloworld_end - __efi_helloworld_begin;
> > @@ -521,6 +530,9 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
> >  		struct efi_loaded_image_obj *image_obj;
> >  		struct efi_loaded_image *loaded_image_info;
> >  
> > +		if (efi_handle_fdt(argc > 2 ? argv[2] : NULL))
> > +			return CMD_RET_FAILURE;
> > +
> >  		if (bootefi_test_prepare(&image_obj, &loaded_image_info,
> >  					 "\\selftest", (uintptr_t)&efi_selftest,
> >  					 "efi_selftest"))
> > @@ -533,6 +545,9 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
> >  	} else
> >  #endif
> >  	if (!strcmp(argv[1], "bootmgr")) {
> > +		if (efi_handle_fdt(argc > 2 ? argv[2] : NULL))
> > +			return CMD_RET_FAILURE;
> > +
> >  		return do_bootefi_bootmgr_exec();
> >  	} else {
> >  		saddr = argv[1];
> > @@ -542,6 +557,8 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
> >  		if (!addr && *saddr != '0')
> >  			return CMD_RET_USAGE;
> >  
> > +		if (efi_handle_fdt(argc > 2 ? argv[2] : NULL))
> > +			return CMD_RET_FAILURE;
> >  	}
> >  
> >  	printf("## Starting EFI application at %08lx ...\n", addr);
> > diff --git a/cmd/bootefi.h b/cmd/bootefi.h
> > new file mode 100644
> > index 000000000000..4e11ab1211cb
> > --- /dev/null
> > +++ b/cmd/bootefi.h
> > @@ -0,0 +1,3 @@
> > +/* SPDX-License-Identifier: GPL-2.0+ */
> 
> This should be a separate patch.
> 
> > +
> > +int efi_handle_fdt(char *fdt_opt);
> >