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Message-Id: <20231009211845.3136536-3-arnd@kernel.org>
Date: Mon, 9 Oct 2023 23:18:38 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: Thomas Zimmermann <tzimmermann@...e.de>,
linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org
Cc: Arnd Bergmann <arnd@...db.de>,
"David S. Miller" <davem@...emloft.net>,
"K. Y. Srinivasan" <kys@...rosoft.com>,
Ard Biesheuvel <ardb@...nel.org>,
Borislav Petkov <bp@...en8.de>, Brian Cain <bcain@...cinc.com>,
Catalin Marinas <catalin.marinas@....com>,
Christophe Leroy <christophe.leroy@...roup.eu>,
Daniel Vetter <daniel@...ll.ch>,
Dave Hansen <dave.hansen@...ux.intel.com>,
David Airlie <airlied@...il.com>,
Deepak Rawat <drawat.floss@...il.com>,
Dexuan Cui <decui@...rosoft.com>,
Dinh Nguyen <dinguyen@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Guo Ren <guoren@...nel.org>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Helge Deller <deller@....de>,
Huacai Chen <chenhuacai@...nel.org>,
Ingo Molnar <mingo@...hat.com>,
Javier Martinez Canillas <javierm@...hat.com>,
John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
Khalid Aziz <khalid@...ehiking.org>,
Linus Walleij <linus.walleij@...aro.org>,
Matt Turner <mattst88@...il.com>,
Max Filippov <jcmvbkbc@...il.com>,
Michael Ellerman <mpe@...erman.id.au>,
Nicholas Piggin <npiggin@...il.com>,
Palmer Dabbelt <palmer@...belt.com>,
Russell King <linux@...linux.org.uk>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Thomas Gleixner <tglx@...utronix.de>,
WANG Xuerui <kernel@...0n.name>, Wei Liu <wei.liu@...nel.org>,
Will Deacon <will@...nel.org>, x86@...nel.org,
linux-alpha@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-efi@...r.kernel.org,
linux-csky@...r.kernel.org, linux-hexagon@...r.kernel.org,
linux-ia64@...r.kernel.org, loongarch@...ts.linux.dev,
linux-mips@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-riscv@...ts.infradead.org, linux-sh@...r.kernel.org,
sparclinux@...r.kernel.org, linux-hyperv@...r.kernel.org
Subject: [PATCH v3 2/9] vgacon: rework screen_info #ifdef checks
From: Arnd Bergmann <arnd@...db.de>
On non-x86 architectures, the screen_info variable is generally only
used for the VGA console where supported, and in some cases the EFI
framebuffer or vga16fb.
Now that we have a definite list of which architectures actually use it
for what, use consistent #ifdef checks so the global variable is only
defined when it is actually used on those architectures.
Loongarch and riscv have no support for vgacon or vga16fb, but
they support EFI firmware, so only that needs to be checked, and the
initialization can be removed because that is handled by EFI.
IA64 has both vgacon and EFI, though EFI apparently never uses
a framebuffer here.
Reviewed-by: Javier Martinez Canillas <javierm@...hat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@...e.de>
Reviewed-by: Khalid Aziz <khalid@...ehiking.org>
Acked-by: Helge Deller <deller@....de>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
v2 changes:
- split out mips/jazz change
- improve ia64 #ifdef changes
---
arch/alpha/kernel/setup.c | 2 ++
arch/alpha/kernel/sys_sio.c | 2 ++
arch/ia64/kernel/setup.c | 6 ++++++
arch/loongarch/kernel/setup.c | 2 ++
arch/mips/kernel/setup.c | 2 +-
arch/mips/sibyte/swarm/setup.c | 2 +-
arch/mips/sni/setup.c | 2 +-
arch/riscv/kernel/setup.c | 11 ++---------
8 files changed, 17 insertions(+), 12 deletions(-)
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index c80258ec332ff..85a679ce061c2 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -131,6 +131,7 @@ static void determine_cpu_caches (unsigned int);
static char __initdata command_line[COMMAND_LINE_SIZE];
+#ifdef CONFIG_VGA_CONSOLE
/*
* The format of "screen_info" is strange, and due to early
* i386-setup code. This is just enough to make the console
@@ -147,6 +148,7 @@ struct screen_info screen_info = {
};
EXPORT_SYMBOL(screen_info);
+#endif
/*
* The direct map I/O window, if any. This should be the same
diff --git a/arch/alpha/kernel/sys_sio.c b/arch/alpha/kernel/sys_sio.c
index 7c420d8dac53d..7de8a5d2d2066 100644
--- a/arch/alpha/kernel/sys_sio.c
+++ b/arch/alpha/kernel/sys_sio.c
@@ -57,11 +57,13 @@ sio_init_irq(void)
static inline void __init
alphabook1_init_arch(void)
{
+#ifdef CONFIG_VGA_CONSOLE
/* The AlphaBook1 has LCD video fixed at 800x600,
37 rows and 100 cols. */
screen_info.orig_y = 37;
screen_info.orig_video_cols = 100;
screen_info.orig_video_lines = 37;
+#endif
lca_init_arch();
}
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 5a55ac82c13a4..d2c66efdde560 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -86,9 +86,13 @@ EXPORT_SYMBOL(local_per_cpu_offset);
#endif
unsigned long ia64_cycles_per_usec;
struct ia64_boot_param *ia64_boot_param;
+#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_EFI)
struct screen_info screen_info;
+#endif
+#ifdef CONFIG_VGA_CONSOLE
unsigned long vga_console_iobase;
unsigned long vga_console_membase;
+#endif
static struct resource data_resource = {
.name = "Kernel data",
@@ -497,6 +501,7 @@ early_console_setup (char *cmdline)
static void __init
screen_info_setup(void)
{
+#ifdef CONFIG_VGA_CONSOLE
unsigned int orig_x, orig_y, num_cols, num_rows, font_height;
memset(&screen_info, 0, sizeof(screen_info));
@@ -525,6 +530,7 @@ screen_info_setup(void)
screen_info.orig_video_mode = 3; /* XXX fake */
screen_info.orig_video_isVGA = 1; /* XXX fake */
screen_info.orig_video_ega_bx = 3; /* XXX fake */
+#endif
}
static inline void
diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c
index 4de32b07c0dcd..0d5edf1f7e4a1 100644
--- a/arch/loongarch/kernel/setup.c
+++ b/arch/loongarch/kernel/setup.c
@@ -57,7 +57,9 @@
#define SMBIOS_CORE_PACKAGE_OFFSET 0x23
#define LOONGSON_EFI_ENABLE (1 << 3)
+#ifdef CONFIG_EFI
struct screen_info screen_info __section(".data");
+#endif
unsigned long fw_arg0, fw_arg1, fw_arg2;
DEFINE_PER_CPU(unsigned long, kernelsp);
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 08321c945ac41..7c81366f26068 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -54,7 +54,7 @@ struct cpuinfo_mips cpu_data[NR_CPUS] __read_mostly;
EXPORT_SYMBOL(cpu_data);
-#ifdef CONFIG_VT
+#ifdef CONFIG_VGA_CONSOLE
struct screen_info screen_info;
#endif
diff --git a/arch/mips/sibyte/swarm/setup.c b/arch/mips/sibyte/swarm/setup.c
index 76683993cdd3a..37df504d3ecbb 100644
--- a/arch/mips/sibyte/swarm/setup.c
+++ b/arch/mips/sibyte/swarm/setup.c
@@ -129,7 +129,7 @@ void __init plat_mem_setup(void)
if (m41t81_probe())
swarm_rtc_type = RTC_M41T81;
-#ifdef CONFIG_VT
+#ifdef CONFIG_VGA_CONSOLE
screen_info = (struct screen_info) {
.orig_video_page = 52,
.orig_video_mode = 3,
diff --git a/arch/mips/sni/setup.c b/arch/mips/sni/setup.c
index efad85c8c823b..9984cf91be7d0 100644
--- a/arch/mips/sni/setup.c
+++ b/arch/mips/sni/setup.c
@@ -38,7 +38,7 @@ extern void sni_machine_power_off(void);
static void __init sni_display_setup(void)
{
-#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_FW_ARC)
+#if defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_FW_ARC)
struct screen_info *si = &screen_info;
DISPLAY_STATUS *di;
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index aac853ae4eb74..0c466a50f1744 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -40,15 +40,8 @@
#include "head.h"
-#if defined(CONFIG_DUMMY_CONSOLE) || defined(CONFIG_EFI)
-struct screen_info screen_info __section(".data") = {
- .orig_video_lines = 30,
- .orig_video_cols = 80,
- .orig_video_mode = 0,
- .orig_video_ega_bx = 0,
- .orig_video_isVGA = 1,
- .orig_video_points = 8
-};
+#if defined(CONFIG_EFI)
+struct screen_info screen_info __section(".data");
#endif
/*
--
2.39.2
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