[U-Boot] [RFC v3 03/10] cmd: bootefi: carve out fdt handling from do_bootefi()

[AKASHI Takahiro]

On Tue, Apr 16, 2019 at 06:54:58AM +0200, Heinrich Schuchardt wrote:
> On 4/16/19 6:24 AM, AKASHI Takahiro wrote:
> >This is a preparatory patch for reworking do_bootefi() in later patch.
> 
> I would prefer a more informative commit message like:
> 
> Carve out a function to handle the installation of the device tree as a
> configuration table.

Okay, but it doesn't convey more than the subject.

-Takahiro Akashi

> Otherwise
> Reviewed-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
> 
> >
> >Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> >---
> >  cmd/bootefi.c | 53 ++++++++++++++++++++++++++++++++++++---------------
> >  1 file changed, 38 insertions(+), 15 deletions(-)
> >
> >diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> >index 3619a20e6433..8cd9644115eb 100644
> >--- a/cmd/bootefi.c
> >+++ b/cmd/bootefi.c
> >@@ -198,6 +198,38 @@ static efi_status_t efi_install_fdt(ulong fdt_addr)
> >  	return ret;
> >  }
> >
> >+/**
> >+ * efi_process_fdt() - process fdt passed by a command argument
> >+ * @fdt_opt:	pointer to argument
> >+ * Return:	status code
> >+ *
> >+ * If specified, fdt will be installed as configuration table,
> >+ * otherwise no fdt will be passed.
> >+ */
> >+static efi_status_t efi_process_fdt(const char *fdt_opt)
> >+{
> >+	unsigned long fdt_addr;
> >+	efi_status_t ret;
> >+
> >+	if (fdt_opt) {
> >+		fdt_addr = simple_strtoul(fdt_opt, NULL, 16);
> >+		if (!fdt_addr && *fdt_opt != '0')
> >+			return EFI_INVALID_PARAMETER;
> >+
> >+		/* Install device tree */
> >+		ret = efi_install_fdt(fdt_addr);
> >+		if (ret != EFI_SUCCESS) {
> >+			printf("ERROR: failed to install device tree\n");
> >+			return ret;
> >+		}
> >+	} else {
> >+		/* Remove device tree. EFI_NOT_FOUND can be ignored here */
> >+		efi_install_configuration_table(&efi_guid_fdt, NULL);
> >+	}
> >+
> >+	return EFI_SUCCESS;
> >+}
> >+
> >  static efi_status_t bootefi_run_prepare(const char *load_options_path,
> >  		struct efi_device_path *device_path,
> >  		struct efi_device_path *image_path,
> >@@ -407,21 +439,12 @@ 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");
> >-	}
> >+	r = fdt_process_fdt(argc > 2 ? argv[2] : NULL);
> >+	if (r == EFI_INVALID_PARAMETER)
> >+		return CMD_RET_USAGE;
> >+	else if (r != EFI_SUCCESS)
> >+		return CMD_RET_FAILURE;
> >+
> >  #ifdef CONFIG_CMD_BOOTEFI_HELLO
> >  	if (!strcmp(argv[1], "hello")) {
> >  		ulong size = __efi_helloworld_end - __efi_helloworld_begin;
> >
>