linux-kernel - [PATCH 16/25] efi/libstub: unify the efi_char16

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Date:   Tue, 24 Dec 2019 16:10:16 +0100
From:   Ard Biesheuvel <ardb@...nel.org>
To:     linux-efi@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Ard Biesheuvel <ardb@...nel.org>, linux-kernel@...r.kernel.org,
        Arvind Sankar <nivedita@...m.mit.edu>
Subject: [PATCH 16/25] efi/libstub: unify the efi_char16_printk implementations

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

Signed-off-by: Ard Biesheuvel <ardb@...nel.org>
---
 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(-)

diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 3a7c900b9c66..5fb12827bdc2 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -46,13 +46,6 @@ static void setup_boot_services##bits(struct efi_config *c)		\
 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)
 {
diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c
index 47f072ac3f30..b44b1bd4d480 100644
--- 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_table(void)
 	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;
diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c
index 9bb74ad4b7fe..f74b514789d7 100644
--- 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_table_t *sys_table, efi_guid_t guid)
 	}
 	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);
+}
-- 
2.20.1