From: Ard Biesheuvel <ardb@kernel.org>
Date: Tue, 24 Dec 2019 16:10:16 +0100
Subject: efi/libstub: Unify the efi_char16_printk implementations
Patch-mainline: v5.6-rc1
Git-commit: dc29da14ed94a005ed2a590ec86aa8a572fea4a9
References: jsc#SLE-16407

Use a single implementation for efi_char16_printk() across all
architectures.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Arvind Sankar <nivedita@alum.mit.edu>
Cc: Borislav Petkov <bp@alien8.de>
Cc: James Morse <james.morse@arm.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: https://lkml.kernel.org/r/20191224151025.32482-17-ardb@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 arch/x86/boot/compressed/eboot.c               |    7 -------
 drivers/firmware/efi/libstub/arm-stub.c        |    9 ---------
 drivers/firmware/efi/libstub/efi-stub-helper.c |    9 +++++++++
 3 files changed, 9 insertions(+), 16 deletions(-)

--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -46,13 +46,6 @@ static void setup_boot_services##bits(st
 BOOT_SERVICES(32);
 BOOT_SERVICES(64);
 
-void efi_char16_printk(efi_system_table_t *table, efi_char16_t *str)
-{
-	efi_call_proto(efi_simple_text_output_protocol, output_string,
-		       ((efi_simple_text_output_protocol_t *)(unsigned long)
-				efi_early->text_output), str);
-}
-
 static efi_status_t
 preserve_pci_rom_image(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
 {
--- a/drivers/firmware/efi/libstub/arm-stub.c
+++ b/drivers/firmware/efi/libstub/arm-stub.c
@@ -44,15 +44,6 @@ __pure efi_system_table_t *efi_system_ta
 	return sys_table;
 }
 
-void efi_char16_printk(efi_system_table_t *sys_table_arg,
-			      efi_char16_t *str)
-{
-	efi_simple_text_output_protocol_t *out;
-
-	out = (efi_simple_text_output_protocol_t *)sys_table_arg->con_out;
-	out->output_string(out, str);
-}
-
 static struct screen_info *setup_graphics(efi_system_table_t *sys_table_arg)
 {
 	efi_guid_t gop_proto = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
--- a/drivers/firmware/efi/libstub/efi-stub-helper.c
+++ b/drivers/firmware/efi/libstub/efi-stub-helper.c
@@ -955,3 +955,12 @@ void *get_efi_config_table(efi_system_ta
 	}
 	return NULL;
 }
+
+void efi_char16_printk(efi_system_table_t *table, efi_char16_t *str)
+{
+	efi_call_proto(efi_simple_text_output_protocol,
+		       output_string,
+		       efi_table_attr(efi_system_table, con_out,
+				      efi_system_table()),
+		       str);
+}