arm64/efi: remove /chosen/linux, uefi-stub-kern-ver DT property

With the stub to kernel interface being promoted to a proper interface
so that other agents than the stub can boot the kernel proper in EFI
mode, we can remove the linux,uefi-stub-kern-ver field, considering
that its original purpose was to prevent this from happening in the
first place.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/Documentation/arm/uefi.txt b/Documentation/arm/uefi.txt
index d60030a..7f1bed8 100644 (file)
--- a/Documentation/arm/uefi.txt
+++ b/Documentation/arm/uefi.txt
@@ -58,7 +58,5 @@ linux,uefi-mmap-desc-size | 32-bit | Size in bytes of each entry in the UEFI
 --------------------------------------------------------------------------------
 linux,uefi-mmap-desc-ver  | 32-bit | Version of the mmap descriptor format.
 --------------------------------------------------------------------------------
-linux,uefi-stub-kern-ver  | string | Copy of linux_banner from build.
---------------------------------------------------------------------------------
 
 For verbose debug messages, specify 'uefi_debug' on the kernel command line.

diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
index ef5d764..b62e2f5 100644 (file)
--- a/drivers/firmware/efi/libstub/fdt.c
+++ b/drivers/firmware/efi/libstub/fdt.c
@@ -147,15 +147,6 @@ efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
        if (status)
                goto fdt_set_fail;
 
-       /*
-        * Add kernel version banner so stub/kernel match can be
-        * verified.
-        */
-       status = fdt_setprop_string(fdt, node, "linux,uefi-stub-kern-ver",
-                            linux_banner);
-       if (status)
-               goto fdt_set_fail;
-
        return EFI_SUCCESS;
 
 fdt_set_fail: