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

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

On Wed, Apr 17, 2019 at 06:35:57PM +0200, Heinrich Schuchardt wrote:
> On 4/17/19 9:01 AM, AKASHI Takahiro wrote:
> >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@gmx.de>
> >>
> >>>
> >>>Signed-off-by: AKASHI Takahiro <takahiro.akashi@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);
> 
> cmd/bootefi.c: In function ‘do_bootefi’:
> cmd/bootefi.c:442:6: warning: implicit declaration of function
> ‘fdt_process_fdt’; did you mean ‘efi_process_fdt’?
> [-Wimplicit-function-declaration]
>   r = fdt_process_fdt(argc > 2 ? argv[2] : NULL);
>       ^~~~~~~~~~~~~~~
>       efi_process_fdt

Oops. I think that I fixed it before.
Will fix along with patch#4.

> cmd/bootefi.c:424:16: warning: unused variable ‘fdt_addr’
> [-Wunused-variable]
>   unsigned long fdt_addr;
>                 ^~~~~~~~

Okay.

Thanks,
-Takahiro Akashi
> At top level:
>   CC      drivers/virtio/virtio_pci_legacy.o
> cmd/bootefi.c:209:21: warning: ‘efi_process_fdt’ defined but not used
> [-Wunused-function]
>  static efi_status_t efi_process_fdt(const char *fdt_opt)
>                      ^~~~~~~~~~~~~~~
> 
> Please, check.
> 
> Best regards
> 
> Heinrich
> 
> >>>+	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;
> >>>
> >>
> >
>