From: Arnd Bergmann <[email protected]>
v3 changelog
No real changes, just rebased for context changes, and picked up the Acks.
This now conflicts with the ia64 removal and introduces one new dependency
on IA64, but that is harmless and trivial to deal with later.
Link: https://lore.kernel.org/lkml/[email protected]/
---
v2 changelog
I refreshed the first four patches that I sent before with very minor
updates, and then added some more to further disaggregate the use
of screen_info:
- I found that powerpc wasn't using vga16fb any more
- vgacon can be almost entirely separated from the global
screen_info, except on x86
- similarly, the EFI framebuffer initialization can be
kept separate, except on x86.
I did extensive build testing on arm/arm64/x86 and the normal built bot
testing for the other architectures.
Which tree should this get merged through?
Link: https://lore.kernel.org/lkml/[email protected]/
Arnd Bergmann (9):
vgacon: rework Kconfig dependencies
vgacon: rework screen_info #ifdef checks
dummycon: limit Arm console size hack to footbridge
vgacon, arch/*: remove unused screen_info definitions
vgacon: remove screen_info dependency
vgacon: clean up global screen_info instances
vga16fb: drop powerpc support
hyperv: avoid dependency on screen_info
efi: move screen_info into efi init code
arch/alpha/kernel/proto.h | 2 +
arch/alpha/kernel/setup.c | 8 +--
arch/alpha/kernel/sys_sio.c | 8 ++-
arch/arm/include/asm/setup.h | 5 ++
arch/arm/kernel/atags_parse.c | 20 +++---
arch/arm/kernel/efi.c | 6 --
arch/arm/kernel/setup.c | 11 +--
arch/arm64/kernel/efi.c | 4 --
arch/arm64/kernel/image-vars.h | 2 +
arch/csky/kernel/setup.c | 12 ----
arch/hexagon/kernel/Makefile | 2 -
arch/hexagon/kernel/screen_info.c | 3 -
arch/ia64/kernel/setup.c | 53 ++++++++-------
arch/loongarch/kernel/efi.c | 3 +-
arch/loongarch/kernel/image-vars.h | 2 +
arch/loongarch/kernel/setup.c | 3 -
arch/mips/jazz/setup.c | 9 ---
arch/mips/kernel/setup.c | 11 ---
arch/mips/mti-malta/malta-setup.c | 4 +-
arch/mips/sibyte/swarm/setup.c | 26 ++++---
arch/mips/sni/setup.c | 18 ++---
arch/nios2/kernel/setup.c | 5 --
arch/powerpc/kernel/setup-common.c | 16 -----
arch/riscv/kernel/image-vars.h | 2 +
arch/riscv/kernel/setup.c | 12 ----
arch/sh/kernel/setup.c | 5 --
arch/sparc/kernel/setup_32.c | 13 ----
arch/sparc/kernel/setup_64.c | 13 ----
arch/x86/kernel/setup.c | 2 +-
arch/xtensa/kernel/setup.c | 12 ----
drivers/firmware/efi/efi-init.c | 14 +++-
drivers/firmware/efi/libstub/efi-stub-entry.c | 8 ++-
drivers/firmware/pcdp.c | 1 -
drivers/gpu/drm/hyperv/hyperv_drm_drv.c | 7 +-
drivers/hv/vmbus_drv.c | 6 +-
drivers/video/console/Kconfig | 11 +--
drivers/video/console/dummycon.c | 2 +-
drivers/video/console/vgacon.c | 68 +++++++++++--------
drivers/video/fbdev/Kconfig | 2 +-
drivers/video/fbdev/hyperv_fb.c | 8 +--
drivers/video/fbdev/vga16fb.c | 9 +--
include/linux/console.h | 7 ++
42 files changed, 183 insertions(+), 252 deletions(-)
delete mode 100644 arch/hexagon/kernel/screen_info.c
--
2.39.2
Cc: "David S. Miller" <[email protected]>
Cc: "K. Y. Srinivasan" <[email protected]>
Cc: Ard Biesheuvel <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Brian Cain <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Christophe Leroy <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Deepak Rawat <[email protected]>
Cc: Dexuan Cui <[email protected]>
Cc: Dinh Nguyen <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Guo Ren <[email protected]>
Cc: Haiyang Zhang <[email protected]>
Cc: Helge Deller <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Javier Martinez Canillas <[email protected]>
Cc: John Paul Adrian Glaubitz <[email protected]>
Cc: Khalid Aziz <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Matt Turner <[email protected]>
Cc: Max Filippov <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: Russell King <[email protected]>
Cc: Thomas Bogendoerfer <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: WANG Xuerui <[email protected]>
Cc: Wei Liu <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
From: Arnd Bergmann <[email protected]>
The list of dependencies here is phrased as an opt-out, but this is missing
a lot of architectures that don't actually support VGA consoles, and some
of the entries are stale:
- powerpc used to support VGA consoles in the old arch/ppc codebase, but
the merged arch/powerpc never did
- arm lists footbridge, integrator and netwinder, but netwinder is actually
part of footbridge, and integrator does not appear to have an actual
VGA hardware, or list it in its ATAG or DT.
- mips has a few platforms (malta, sibyte, and sni) that initialize
screen_info, on everything else the console is selected but cannot
actually work.
- csky, hexgagon, loongarch, nios2, riscv and xtensa are not listed
in the opt-out table and declare a screen_info to allow building
vga_con, but this cannot work because the console is never selected.
Replace this with an opt-in table that lists only the platforms that
remain. This is effectively x86, plus a couple of historic workstation
and server machines that reused parts of the x86 system architecture.
Reviewed-by: Javier Martinez Canillas <[email protected]>
Reviewed-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Khalid Aziz <[email protected]>
Acked-by: Helge Deller <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
---
drivers/video/console/Kconfig | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig
index 30577b1d3de59..cbf303d76d39b 100644
--- a/drivers/video/console/Kconfig
+++ b/drivers/video/console/Kconfig
@@ -7,9 +7,9 @@ menu "Console display driver support"
config VGA_CONSOLE
bool "VGA text console" if EXPERT || !X86
- depends on !4xx && !PPC_8xx && !SPARC && !M68K && !PARISC && !SUPERH && \
- (!ARM || ARCH_FOOTBRIDGE || ARCH_INTEGRATOR || ARCH_NETWINDER) && \
- !ARM64 && !ARC && !MICROBLAZE && !OPENRISC && !S390 && !UML
+ depends on ALPHA || IA64 || X86 || \
+ (ARM && ARCH_FOOTBRIDGE) || \
+ (MIPS && (MIPS_MALTA || SIBYTE_BCM112X || SIBYTE_SB1250 || SIBYTE_BCM1x80 || SNI_RM))
select APERTURE_HELPERS if (DRM || FB || VFIO_PCI_CORE)
default y
help
--
2.39.2
From: Arnd Bergmann <[email protected]>
A number of architectures either kept the screen_info definition for
historical purposes as it used to be required by the generic VT code, or
they copied it from another architecture in order to build the VGA console
driver in an allmodconfig build. The mips definition is used by some
platforms, but the initialization on jazz is not needed.
Now that vgacon no longer builds on these architectures, remove the
stale definitions and initializations.
Reviewed-by: Javier Martinez Canillas <[email protected]>
Reviewed-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Acked-by: Dinh Nguyen <[email protected]>
Acked-by: Max Filippov <[email protected]>
Acked-by: Palmer Dabbelt <[email protected]>
Acked-by: Guo Ren <[email protected]>
Acked-by: Helge Deller <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
---
arch/csky/kernel/setup.c | 12 ------------
arch/hexagon/kernel/Makefile | 2 --
arch/hexagon/kernel/screen_info.c | 3 ---
arch/mips/jazz/setup.c | 9 ---------
arch/nios2/kernel/setup.c | 5 -----
arch/sh/kernel/setup.c | 5 -----
arch/sparc/kernel/setup_32.c | 13 -------------
arch/sparc/kernel/setup_64.c | 13 -------------
arch/xtensa/kernel/setup.c | 12 ------------
9 files changed, 74 deletions(-)
delete mode 100644 arch/hexagon/kernel/screen_info.c
diff --git a/arch/csky/kernel/setup.c b/arch/csky/kernel/setup.c
index 106fbf0b6f3b4..51012e90780d6 100644
--- a/arch/csky/kernel/setup.c
+++ b/arch/csky/kernel/setup.c
@@ -8,22 +8,10 @@
#include <linux/of_fdt.h>
#include <linux/start_kernel.h>
#include <linux/dma-map-ops.h>
-#include <linux/screen_info.h>
#include <asm/sections.h>
#include <asm/mmu_context.h>
#include <asm/pgalloc.h>
-#ifdef CONFIG_DUMMY_CONSOLE
-struct screen_info screen_info = {
- .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
-};
-#endif
-
static void __init csky_memblock_init(void)
{
unsigned long lowmem_size = PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET);
diff --git a/arch/hexagon/kernel/Makefile b/arch/hexagon/kernel/Makefile
index e73cb321630ec..3fdf937eb572e 100644
--- a/arch/hexagon/kernel/Makefile
+++ b/arch/hexagon/kernel/Makefile
@@ -17,5 +17,3 @@ obj-y += vm_vectors.o
obj-$(CONFIG_HAS_DMA) += dma.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
-
-obj-$(CONFIG_VGA_CONSOLE) += screen_info.o
diff --git a/arch/hexagon/kernel/screen_info.c b/arch/hexagon/kernel/screen_info.c
deleted file mode 100644
index 1e1ceb18bafe7..0000000000000
--- a/arch/hexagon/kernel/screen_info.c
+++ /dev/null
@@ -1,3 +0,0 @@
-#include <linux/screen_info.h>
-
-struct screen_info screen_info;
diff --git a/arch/mips/jazz/setup.c b/arch/mips/jazz/setup.c
index ee044261eb223..23059ead773fc 100644
--- a/arch/mips/jazz/setup.c
+++ b/arch/mips/jazz/setup.c
@@ -13,7 +13,6 @@
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/console.h>
-#include <linux/screen_info.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/dma-mapping.h>
@@ -76,14 +75,6 @@ void __init plat_mem_setup(void)
_machine_restart = jazz_machine_restart;
-#ifdef CONFIG_VT
- screen_info = (struct screen_info) {
- .orig_video_cols = 160,
- .orig_video_lines = 64,
- .orig_video_points = 16,
- };
-#endif
-
add_preferred_console("ttyS", 0, "9600");
}
diff --git a/arch/nios2/kernel/setup.c b/arch/nios2/kernel/setup.c
index 8582ed9658447..da122a5fa43b2 100644
--- a/arch/nios2/kernel/setup.c
+++ b/arch/nios2/kernel/setup.c
@@ -19,7 +19,6 @@
#include <linux/memblock.h>
#include <linux/initrd.h>
#include <linux/of_fdt.h>
-#include <linux/screen_info.h>
#include <asm/mmu_context.h>
#include <asm/sections.h>
@@ -36,10 +35,6 @@ static struct pt_regs fake_regs = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0,
0};
-#ifdef CONFIG_VT
-struct screen_info screen_info;
-#endif
-
/* Copy a short hook instruction sequence to the exception address */
static inline void copy_exception_handler(unsigned int addr)
{
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index b3da2757faaf3..3d80515298d26 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -7,7 +7,6 @@
* Copyright (C) 1999 Niibe Yutaka
* Copyright (C) 2002 - 2010 Paul Mundt
*/
-#include <linux/screen_info.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/initrd.h>
@@ -69,10 +68,6 @@ EXPORT_SYMBOL(cpu_data);
struct sh_machine_vector sh_mv = { .mv_name = "generic", };
EXPORT_SYMBOL(sh_mv);
-#ifdef CONFIG_VT
-struct screen_info screen_info;
-#endif
-
extern int root_mountflags;
#define RAMDISK_IMAGE_START_MASK 0x07FF
diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c
index 34ef7febf0d56..e3b72a7b46d37 100644
--- a/arch/sparc/kernel/setup_32.c
+++ b/arch/sparc/kernel/setup_32.c
@@ -17,7 +17,6 @@
#include <linux/initrd.h>
#include <asm/smp.h>
#include <linux/user.h>
-#include <linux/screen_info.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/seq_file.h>
@@ -51,18 +50,6 @@
#include "kernel.h"
-struct screen_info screen_info = {
- 0, 0, /* orig-x, orig-y */
- 0, /* unused */
- 0, /* orig-video-page */
- 0, /* orig-video-mode */
- 128, /* orig-video-cols */
- 0,0,0, /* ega_ax, ega_bx, ega_cx */
- 54, /* orig-video-lines */
- 0, /* orig-video-isVGA */
- 16 /* orig-video-points */
-};
-
/* Typing sync at the prom prompt calls the function pointed to by
* romvec->pv_synchook which I set to the following function.
* This should sync all filesystems and return, for now it just
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index 6546ca9d4d3f1..6a4797dec34b4 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -15,7 +15,6 @@
#include <linux/ptrace.h>
#include <asm/smp.h>
#include <linux/user.h>
-#include <linux/screen_info.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/seq_file.h>
@@ -68,18 +67,6 @@
DEFINE_SPINLOCK(ns87303_lock);
EXPORT_SYMBOL(ns87303_lock);
-struct screen_info screen_info = {
- 0, 0, /* orig-x, orig-y */
- 0, /* unused */
- 0, /* orig-video-page */
- 0, /* orig-video-mode */
- 128, /* orig-video-cols */
- 0, 0, 0, /* unused, ega_bx, unused */
- 54, /* orig-video-lines */
- 0, /* orig-video-isVGA */
- 16 /* orig-video-points */
-};
-
static void
prom_console_write(struct console *con, const char *s, unsigned int n)
{
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 52d6e4870a04c..bdec4a773af09 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -19,7 +19,6 @@
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/proc_fs.h>
-#include <linux/screen_info.h>
#include <linux/kernel.h>
#include <linux/percpu.h>
#include <linux/reboot.h>
@@ -49,17 +48,6 @@
#include <asm/timex.h>
#include <asm/traps.h>
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
-struct screen_info screen_info = {
- .orig_x = 0,
- .orig_y = 24,
- .orig_video_cols = 80,
- .orig_video_lines = 24,
- .orig_video_isVGA = 1,
- .orig_video_points = 16,
-};
-#endif
-
#ifdef CONFIG_BLK_DEV_INITRD
extern unsigned long initrd_start;
extern unsigned long initrd_end;
--
2.39.2
From: Arnd Bergmann <[email protected]>
The dummycon default console size used to be determined by architecture,
but now this is a Kconfig setting on everything except ARM. Tracing this
back in the historic git trees, this was used to match the size of VGA
console or VGA framebuffer on early machines, but nowadays that code is
no longer used, except probably on the old footbridge/netwinder since
that is the only one that supports vgacon.
On machines with a framebuffer, booting with DT so far results in always
using the hardcoded 80x30 size in dummycon, while on ATAGS the setting
can come from a bootloader specific override. Both seem to be worse
choices than the Kconfig setting, since the actual text size for fbcon
also depends on the selected font.
Make this work the same way as everywhere else and use the normal
Kconfig setting, except for the footbridge with vgacon, which keeps
using the traditional code. If vgacon is disabled, footbridge can
also ignore the setting. This means the screen_info only has to be
provided when either vgacon or EFI are enabled now.
To limit the amount of surprises on Arm, change the Kconfig default
to the previously used 80x30 setting instead of the usual 80x25.
Reviewed-by: Thomas Zimmermann <[email protected]>
Tested-by: Linus Walleij <[email protected]>
Reviewed-by: Javier Martinez Canillas <[email protected]>
Acked-by: Helge Deller <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
---
arch/arm/kernel/atags_parse.c | 2 +-
arch/arm/kernel/setup.c | 3 +--
drivers/video/console/Kconfig | 5 +++--
drivers/video/console/dummycon.c | 2 +-
4 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c
index 33f6eb5213a5a..4c815da3b77b0 100644
--- a/arch/arm/kernel/atags_parse.c
+++ b/arch/arm/kernel/atags_parse.c
@@ -69,7 +69,7 @@ static int __init parse_tag_mem32(const struct tag *tag)
__tagtable(ATAG_MEM, parse_tag_mem32);
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
+#if defined(CONFIG_ARCH_FOOTBRIDGE) && defined(CONFIG_VGA_CONSOLE)
static int __init parse_tag_videotext(const struct tag *tag)
{
screen_info.orig_x = tag->u.videotext.x;
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index f474e7dbbe053..5e965cb94dd66 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -928,8 +928,7 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
request_resource(&ioport_resource, &lp2);
}
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE) || \
- defined(CONFIG_EFI)
+#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_EFI)
struct screen_info screen_info = {
.orig_video_lines = 30,
.orig_video_cols = 80,
diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig
index cbf303d76d39b..83c2d7329ca58 100644
--- a/drivers/video/console/Kconfig
+++ b/drivers/video/console/Kconfig
@@ -52,7 +52,7 @@ config DUMMY_CONSOLE
config DUMMY_CONSOLE_COLUMNS
int "Initial number of console screen columns"
- depends on DUMMY_CONSOLE && !ARM
+ depends on DUMMY_CONSOLE && !ARCH_FOOTBRIDGE
default 160 if PARISC
default 80
help
@@ -62,8 +62,9 @@ config DUMMY_CONSOLE_COLUMNS
config DUMMY_CONSOLE_ROWS
int "Initial number of console screen rows"
- depends on DUMMY_CONSOLE && !ARM
+ depends on DUMMY_CONSOLE && !ARCH_FOOTBRIDGE
default 64 if PARISC
+ default 30 if ARM
default 25
help
On PA-RISC, the default value is 64, which should fit a 1280x1024
diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c
index f1711b2f9ff05..70549fecee12c 100644
--- a/drivers/video/console/dummycon.c
+++ b/drivers/video/console/dummycon.c
@@ -18,7 +18,7 @@
* Dummy console driver
*/
-#if defined(__arm__)
+#if defined(CONFIG_ARCH_FOOTBRIDGE) && defined(CONFIG_VGA_CONSOLE)
#define DUMMY_COLUMNS screen_info.orig_video_cols
#define DUMMY_ROWS screen_info.orig_video_lines
#else
--
2.39.2
From: Arnd Bergmann <[email protected]>
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 <[email protected]>
Reviewed-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Khalid Aziz <[email protected]>
Acked-by: Helge Deller <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
---
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
From: Arnd Bergmann <[email protected]>
The vga console driver is fairly self-contained, and only used by
architectures that explicitly initialize the screen_info settings.
Chance every instance that picks the vga console by setting conswitchp
to call a function instead, and pass a reference to the screen_info
there.
Reviewed-by: Javier Martinez Canillas <[email protected]>
Acked-by: Khalid Azzi <[email protected]>
Acked-by: Helge Deller <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
---
arch/alpha/kernel/setup.c | 2 +-
arch/arm/kernel/setup.c | 2 +-
arch/ia64/kernel/setup.c | 2 +-
arch/mips/kernel/setup.c | 2 +-
arch/x86/kernel/setup.c | 2 +-
drivers/firmware/pcdp.c | 2 +-
drivers/video/console/vgacon.c | 68 ++++++++++++++++++++--------------
include/linux/console.h | 7 ++++
8 files changed, 53 insertions(+), 34 deletions(-)
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index 85a679ce061c2..c004933468606 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -654,7 +654,7 @@ setup_arch(char **cmdline_p)
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
- conswitchp = &vga_con;
+ vgacon_register_screen(&screen_info);
#endif
#endif
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 5e965cb94dd66..67ba140794bf6 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -1197,7 +1197,7 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
- conswitchp = &vga_con;
+ vgacon_register_screen(&screen_info);
#endif
#endif
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index d2c66efdde560..2c9283fcd3759 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -619,7 +619,7 @@ setup_arch (char **cmdline_p)
* memory so we can avoid this problem.
*/
if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY)
- conswitchp = &vga_con;
+ vgacon_register_screen(&screen_info);
# endif
}
#endif
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 7c81366f26068..c395e2a5a2556 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -795,7 +795,7 @@ void __init setup_arch(char **cmdline_p)
#if defined(CONFIG_VT)
#if defined(CONFIG_VGA_CONSOLE)
- conswitchp = &vga_con;
+ vgacon_register_screen(&screen_info);
#endif
#endif
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index d3e43440369ce..8ae0478c24ccb 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1168,7 +1168,7 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
if (!efi_enabled(EFI_BOOT) || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
- conswitchp = &vga_con;
+ vgacon_register_screen(&screen_info);
#endif
#endif
x86_init.oem.banner();
diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
index 715a45442d1cf..667a595373b2d 100644
--- a/drivers/firmware/pcdp.c
+++ b/drivers/firmware/pcdp.c
@@ -72,7 +72,7 @@ setup_vga_console(struct pcdp_device *dev)
return -ENODEV;
}
- conswitchp = &vga_con;
+ vgacon_register_screen(&screen_info);
printk(KERN_INFO "PCDP: VGA console\n");
return 0;
#else
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
index 7ad047bcae171..8ef1579fa57fd 100644
--- a/drivers/video/console/vgacon.c
+++ b/drivers/video/console/vgacon.c
@@ -89,6 +89,8 @@ static int vga_video_font_height;
static int vga_scan_lines __read_mostly;
static unsigned int vga_rolled_over; /* last vc_origin offset before wrap */
+static struct screen_info *vga_si;
+
static bool vga_hardscroll_enabled;
static bool vga_hardscroll_user_enable = true;
@@ -153,8 +155,9 @@ static const char *vgacon_startup(void)
u16 saved1, saved2;
volatile u16 *p;
- if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB ||
- screen_info.orig_video_isVGA == VIDEO_TYPE_EFI) {
+ if (!vga_si ||
+ vga_si->orig_video_isVGA == VIDEO_TYPE_VLFB ||
+ vga_si->orig_video_isVGA == VIDEO_TYPE_EFI) {
no_vga:
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
@@ -164,29 +167,29 @@ static const char *vgacon_startup(void)
#endif
}
- /* boot_params.screen_info reasonably initialized? */
- if ((screen_info.orig_video_lines == 0) ||
- (screen_info.orig_video_cols == 0))
+ /* vga_si reasonably initialized? */
+ if ((vga_si->orig_video_lines == 0) ||
+ (vga_si->orig_video_cols == 0))
goto no_vga;
/* VGA16 modes are not handled by VGACON */
- if ((screen_info.orig_video_mode == 0x0D) || /* 320x200/4 */
- (screen_info.orig_video_mode == 0x0E) || /* 640x200/4 */
- (screen_info.orig_video_mode == 0x10) || /* 640x350/4 */
- (screen_info.orig_video_mode == 0x12) || /* 640x480/4 */
- (screen_info.orig_video_mode == 0x6A)) /* 800x600/4 (VESA) */
+ if ((vga_si->orig_video_mode == 0x0D) || /* 320x200/4 */
+ (vga_si->orig_video_mode == 0x0E) || /* 640x200/4 */
+ (vga_si->orig_video_mode == 0x10) || /* 640x350/4 */
+ (vga_si->orig_video_mode == 0x12) || /* 640x480/4 */
+ (vga_si->orig_video_mode == 0x6A)) /* 800x600/4 (VESA) */
goto no_vga;
- vga_video_num_lines = screen_info.orig_video_lines;
- vga_video_num_columns = screen_info.orig_video_cols;
+ vga_video_num_lines = vga_si->orig_video_lines;
+ vga_video_num_columns = vga_si->orig_video_cols;
vgastate.vgabase = NULL;
- if (screen_info.orig_video_mode == 7) {
+ if (vga_si->orig_video_mode == 7) {
/* Monochrome display */
vga_vram_base = 0xb0000;
vga_video_port_reg = VGA_CRT_IM;
vga_video_port_val = VGA_CRT_DM;
- if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) {
+ if ((vga_si->orig_video_ega_bx & 0xff) != 0x10) {
static struct resource ega_console_resource =
{ .name = "ega",
.flags = IORESOURCE_IO,
@@ -223,12 +226,12 @@ static const char *vgacon_startup(void)
vga_vram_base = 0xb8000;
vga_video_port_reg = VGA_CRT_IC;
vga_video_port_val = VGA_CRT_DC;
- if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) {
+ if ((vga_si->orig_video_ega_bx & 0xff) != 0x10) {
int i;
vga_vram_size = 0x8000;
- if (!screen_info.orig_video_isVGA) {
+ if (!vga_si->orig_video_isVGA) {
static struct resource ega_console_resource =
{ .name = "ega",
.flags = IORESOURCE_IO,
@@ -319,14 +322,14 @@ static const char *vgacon_startup(void)
|| vga_video_type == VIDEO_TYPE_VGAC
|| vga_video_type == VIDEO_TYPE_EGAM) {
vga_hardscroll_enabled = vga_hardscroll_user_enable;
- vga_default_font_height = screen_info.orig_video_points;
- vga_video_font_height = screen_info.orig_video_points;
+ vga_default_font_height = vga_si->orig_video_points;
+ vga_video_font_height = vga_si->orig_video_points;
/* This may be suboptimal but is a safe bet - go with it */
vga_scan_lines =
vga_video_font_height * vga_video_num_lines;
}
- vgacon_xres = screen_info.orig_video_cols * VGA_FONTWIDTH;
+ vgacon_xres = vga_si->orig_video_cols * VGA_FONTWIDTH;
vgacon_yres = vga_scan_lines;
return display_desc;
@@ -371,7 +374,7 @@ static void vgacon_init(struct vc_data *c, int init)
/* Only set the default if the user didn't deliberately override it */
if (global_cursor_default == -1)
global_cursor_default =
- !(screen_info.flags & VIDEO_FLAGS_NOCURSOR);
+ !(vga_si->flags & VIDEO_FLAGS_NOCURSOR);
}
static void vgacon_deinit(struct vc_data *c)
@@ -589,7 +592,7 @@ static int vgacon_switch(struct vc_data *c)
{
int x = c->vc_cols * VGA_FONTWIDTH;
int y = c->vc_rows * c->vc_cell_height;
- int rows = screen_info.orig_video_lines * vga_default_font_height/
+ int rows = vga_si->orig_video_lines * vga_default_font_height/
c->vc_cell_height;
/*
* We need to save screen size here as it's the only way
@@ -609,7 +612,7 @@ static int vgacon_switch(struct vc_data *c)
if ((vgacon_xres != x || vgacon_yres != y) &&
(!(vga_video_num_columns % 2) &&
- vga_video_num_columns <= screen_info.orig_video_cols &&
+ vga_video_num_columns <= vga_si->orig_video_cols &&
vga_video_num_lines <= rows))
vgacon_doresize(c, c->vc_cols, c->vc_rows);
}
@@ -1056,13 +1059,13 @@ static int vgacon_resize(struct vc_data *c, unsigned int width,
* Ho ho! Someone (svgatextmode, eh?) may have reprogrammed
* the video mode! Set the new defaults then and go away.
*/
- screen_info.orig_video_cols = width;
- screen_info.orig_video_lines = height;
+ vga_si->orig_video_cols = width;
+ vga_si->orig_video_lines = height;
vga_default_font_height = c->vc_cell_height;
return 0;
}
- if (width % 2 || width > screen_info.orig_video_cols ||
- height > (screen_info.orig_video_lines * vga_default_font_height)/
+ if (width % 2 || width > vga_si->orig_video_cols ||
+ height > (vga_si->orig_video_lines * vga_default_font_height)/
c->vc_cell_height)
return -EINVAL;
@@ -1092,8 +1095,8 @@ static void vgacon_save_screen(struct vc_data *c)
* console initialization routines.
*/
vga_bootup_console = 1;
- c->state.x = screen_info.orig_x;
- c->state.y = screen_info.orig_y;
+ c->state.x = vga_si->orig_x;
+ c->state.y = vga_si->orig_y;
}
/* We can't copy in more than the size of the video buffer,
@@ -1186,4 +1189,13 @@ const struct consw vga_con = {
};
EXPORT_SYMBOL(vga_con);
+void vgacon_register_screen(struct screen_info *si)
+{
+ if (!si || vga_si)
+ return;
+
+ conswitchp = &vga_con;
+ vga_si = si;
+}
+
MODULE_LICENSE("GPL");
diff --git a/include/linux/console.h b/include/linux/console.h
index e4fc6f7c14961..060be989ae261 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -101,6 +101,13 @@ extern const struct consw dummy_con; /* dummy console buffer */
extern const struct consw vga_con; /* VGA text console */
extern const struct consw newport_con; /* SGI Newport console */
+struct screen_info;
+#ifdef CONFIG_VGA_CONSOLE
+void vgacon_register_screen(struct screen_info *si);
+#else
+static inline void vgacon_register_screen(struct screen_info *si) { }
+#endif
+
int con_is_bound(const struct consw *csw);
int do_unregister_con_driver(const struct consw *csw);
int do_take_over_console(const struct consw *sw, int first, int last, int deflt);
--
2.39.2
From: Arnd Bergmann <[email protected]>
I noticed that commit 0db5b61e0dc07 ("fbdev/vga16fb: Create
EGA/VGA devices in sysfb code") broke vga16fb on non-x86 platforms,
because the sysfb code never creates a vga-framebuffer device when
screen_info.orig_video_isVGA is set to '1' instead of VIDEO_TYPE_VGAC.
However, it turns out that the only architecture that has allowed
building vga16fb in the past 20 years is powerpc, and this only worked
on two 32-bit platforms and never on 64-bit powerpc. The last machine
that actually used this was removed in linux-3.10, so this is all dead
code and can be removed.
The big-endian support in vga16fb.c could also be removed, but I'd just
leave this in place.
Fixes: 933ee7119fb14 ("powerpc: remove PReP platform")
Reviewed-by: Javier Martinez Canillas <[email protected]>
Acked-by: Helge Deller <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
---
arch/powerpc/kernel/setup-common.c | 16 ----------------
drivers/video/fbdev/Kconfig | 2 +-
drivers/video/fbdev/vga16fb.c | 9 +--------
3 files changed, 2 insertions(+), 25 deletions(-)
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 2f1026fba00d5..22d48a5430611 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -22,7 +22,6 @@
#include <linux/seq_file.h>
#include <linux/ioport.h>
#include <linux/console.h>
-#include <linux/screen_info.h>
#include <linux/root_dev.h>
#include <linux/cpu.h>
#include <linux/unistd.h>
@@ -98,21 +97,6 @@ int boot_cpu_hwid = -1;
int dcache_bsize;
int icache_bsize;
-/*
- * This still seems to be needed... -- paulus
- */
-struct screen_info screen_info = {
- .orig_x = 0,
- .orig_y = 25,
- .orig_video_cols = 80,
- .orig_video_lines = 25,
- .orig_video_isVGA = 1,
- .orig_video_points = 16
-};
-#if defined(CONFIG_FB_VGA16_MODULE)
-EXPORT_SYMBOL(screen_info);
-#endif
-
/* Variables required to store legacy IO irq routing */
int of_i8042_kbd_irq;
EXPORT_SYMBOL_GPL(of_i8042_kbd_irq);
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 5bea59f29d2fe..ab40ff33a8495 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -364,7 +364,7 @@ config FB_IMSTT
config FB_VGA16
tristate "VGA 16-color graphics support"
- depends on FB && (X86 || PPC)
+ depends on FB && X86
select APERTURE_HELPERS
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
diff --git a/drivers/video/fbdev/vga16fb.c b/drivers/video/fbdev/vga16fb.c
index b43c874c199f6..6094080852a53 100644
--- a/drivers/video/fbdev/vga16fb.c
+++ b/drivers/video/fbdev/vga16fb.c
@@ -185,8 +185,6 @@ static inline void setindex(int index)
/* Check if the video mode is supported by the driver */
static inline int check_mode_supported(const struct screen_info *si)
{
- /* non-x86 architectures treat orig_video_isVGA as a boolean flag */
-#if defined(CONFIG_X86)
/* only EGA and VGA in 16 color graphic mode are supported */
if (si->orig_video_isVGA != VIDEO_TYPE_EGAC &&
si->orig_video_isVGA != VIDEO_TYPE_VGAC)
@@ -197,7 +195,7 @@ static inline int check_mode_supported(const struct screen_info *si)
si->orig_video_mode != 0x10 && /* 640x350/4 (EGA) */
si->orig_video_mode != 0x12) /* 640x480/4 (VGA) */
return -ENODEV;
-#endif
+
return 0;
}
@@ -1338,12 +1336,7 @@ static int vga16fb_probe(struct platform_device *dev)
printk(KERN_INFO "vga16fb: mapped to 0x%p\n", info->screen_base);
par = info->par;
-#if defined(CONFIG_X86)
par->isVGA = si->orig_video_isVGA == VIDEO_TYPE_VGAC;
-#else
- /* non-x86 architectures treat orig_video_isVGA as a boolean flag */
- par->isVGA = si->orig_video_isVGA;
-#endif
par->palette_blanked = 0;
par->vesa_blanked = 0;
--
2.39.2
From: Arnd Bergmann <[email protected]>
The two hyperv framebuffer drivers (hyperv_fb or hyperv_drm_drv) access the
global screen_info in order to take over from the sysfb framebuffer, which
in turn could be handled by simplefb, simpledrm or efifb. Similarly, the
vmbus_drv code marks the original EFI framebuffer as reserved, but this
is not required if there is no sysfb.
As a preparation for making screen_info itself more local to the sysfb
helper code, add a compile-time conditional in all three files that relate
to hyperv fb and just skip this code if there is no sysfb that needs to
be unregistered.
Reviewed-by: Javier Martinez Canillas <[email protected]>
Acked-by: Helge Deller <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
---
drivers/gpu/drm/hyperv/hyperv_drm_drv.c | 7 ++++---
drivers/hv/vmbus_drv.c | 6 ++++--
drivers/video/fbdev/hyperv_fb.c | 8 ++++----
3 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
index 58b0b46a21e68..d511d17c5bdfc 100644
--- a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
+++ b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
@@ -73,9 +73,10 @@ static int hyperv_setup_vram(struct hyperv_drm_device *hv,
struct drm_device *dev = &hv->dev;
int ret;
- drm_aperture_remove_conflicting_framebuffers(screen_info.lfb_base,
- screen_info.lfb_size,
- &hyperv_driver);
+ if (IS_ENABLED(CONFIG_SYSFB))
+ drm_aperture_remove_conflicting_framebuffers(screen_info.lfb_base,
+ screen_info.lfb_size,
+ &hyperv_driver);
hv->fb_size = (unsigned long)hv->mmio_megabytes * 1024 * 1024;
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index edbb38f6956b9..b33d5abd9beb2 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -2100,8 +2100,10 @@ static void __maybe_unused vmbus_reserve_fb(void)
if (efi_enabled(EFI_BOOT)) {
/* Gen2 VM: get FB base from EFI framebuffer */
- start = screen_info.lfb_base;
- size = max_t(__u32, screen_info.lfb_size, 0x800000);
+ if (IS_ENABLED(CONFIG_SYSFB)) {
+ start = screen_info.lfb_base;
+ size = max_t(__u32, screen_info.lfb_size, 0x800000);
+ }
} else {
/* Gen1 VM: get FB base from PCI */
pdev = pci_get_device(PCI_VENDOR_ID_MICROSOFT,
diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
index 2e27c6bd80442..bf59daf862fc7 100644
--- a/drivers/video/fbdev/hyperv_fb.c
+++ b/drivers/video/fbdev/hyperv_fb.c
@@ -1010,7 +1010,7 @@ static int hvfb_getmem(struct hv_device *hdev, struct fb_info *info)
goto getmem_done;
}
pr_info("Unable to allocate enough contiguous physical memory on Gen 1 VM. Using MMIO instead.\n");
- } else {
+ } else if (IS_ENABLED(CONFIG_SYSFB)) {
base = screen_info.lfb_base;
size = screen_info.lfb_size;
}
@@ -1056,13 +1056,13 @@ static int hvfb_getmem(struct hv_device *hdev, struct fb_info *info)
getmem_done:
aperture_remove_conflicting_devices(base, size, KBUILD_MODNAME);
- if (gen2vm) {
+ if (!gen2vm) {
+ pci_dev_put(pdev);
+ } else if (IS_ENABLED(CONFIG_SYSFB)) {
/* framebuffer is reallocated, clear screen_info to avoid misuse from kexec */
screen_info.lfb_size = 0;
screen_info.lfb_base = 0;
screen_info.orig_video_isVGA = 0;
- } else {
- pci_dev_put(pdev);
}
return 0;
--
2.39.2
From: Arnd Bergmann <[email protected]>
After the vga console no longer relies on global screen_info, there are
only two remaining use cases:
- on the x86 architecture, it is used for multiple boot methods
(bzImage, EFI, Xen, kexec) to commucate the initial VGA or framebuffer
settings to a number of device drivers.
- on other architectures, it is only used as part of the EFI stub,
and only for the three sysfb framebuffers (simpledrm, simplefb, efifb).
Remove the duplicate data structure definitions by moving it into the
efi-init.c file that sets it up initially for the EFI case, leaving x86
as an exception that retains its own definition for non-EFI boots.
The added #ifdefs here are optional, I added them to further limit the
reach of screen_info to configurations that have at least one of the
users enabled.
Reviewed-by: Ard Biesheuvel <[email protected]>
Reviewed-by: Javier Martinez Canillas <[email protected]>
Acked-by: Helge Deller <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
---
arch/arm/kernel/setup.c | 4 ----
arch/arm64/kernel/efi.c | 4 ----
arch/arm64/kernel/image-vars.h | 2 ++
arch/loongarch/kernel/efi.c | 3 ++-
arch/loongarch/kernel/image-vars.h | 2 ++
arch/loongarch/kernel/setup.c | 5 -----
arch/riscv/kernel/image-vars.h | 2 ++
arch/riscv/kernel/setup.c | 5 -----
drivers/firmware/efi/efi-init.c | 14 +++++++++++++-
drivers/firmware/efi/libstub/efi-stub-entry.c | 8 +++++++-
10 files changed, 28 insertions(+), 21 deletions(-)
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index c15dfdbe3d5ae..b808712e85981 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -939,10 +939,6 @@ static struct screen_info vgacon_screen_info = {
};
#endif
-#if defined(CONFIG_EFI)
-struct screen_info screen_info;
-#endif
-
static int __init customize_machine(void)
{
/*
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
index 2b478ca356b00..52089f111c8db 100644
--- a/arch/arm64/kernel/efi.c
+++ b/arch/arm64/kernel/efi.c
@@ -71,10 +71,6 @@ static __init pteval_t create_mapping_protection(efi_memory_desc_t *md)
return pgprot_val(PAGE_KERNEL_EXEC);
}
-/* we will fill this structure from the stub, so don't put it in .bss */
-struct screen_info screen_info __section(".data");
-EXPORT_SYMBOL(screen_info);
-
int __init efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md)
{
pteval_t prot_val = create_mapping_protection(md);
diff --git a/arch/arm64/kernel/image-vars.h b/arch/arm64/kernel/image-vars.h
index 35f3c79595137..5e4dc72ab1bda 100644
--- a/arch/arm64/kernel/image-vars.h
+++ b/arch/arm64/kernel/image-vars.h
@@ -27,7 +27,9 @@ PROVIDE(__efistub__text = _text);
PROVIDE(__efistub__end = _end);
PROVIDE(__efistub___inittext_end = __inittext_end);
PROVIDE(__efistub__edata = _edata);
+#if defined(CONFIG_EFI_EARLYCON) || defined(CONFIG_SYSFB)
PROVIDE(__efistub_screen_info = screen_info);
+#endif
PROVIDE(__efistub__ctype = _ctype);
PROVIDE(__pi___memcpy = __pi_memcpy);
diff --git a/arch/loongarch/kernel/efi.c b/arch/loongarch/kernel/efi.c
index 9fc10cea21e10..df7db34024e61 100644
--- a/arch/loongarch/kernel/efi.c
+++ b/arch/loongarch/kernel/efi.c
@@ -115,7 +115,8 @@ void __init efi_init(void)
set_bit(EFI_CONFIG_TABLES, &efi.flags);
- init_screen_info();
+ if (IS_ENABLED(CONFIG_EFI_EARLYCON) || IS_ENABLED(CONFIG_SYSFB))
+ init_screen_info();
if (boot_memmap == EFI_INVALID_TABLE_ADDR)
return;
diff --git a/arch/loongarch/kernel/image-vars.h b/arch/loongarch/kernel/image-vars.h
index e561989d02de9..5087416b9678d 100644
--- a/arch/loongarch/kernel/image-vars.h
+++ b/arch/loongarch/kernel/image-vars.h
@@ -12,7 +12,9 @@ __efistub_kernel_entry = kernel_entry;
__efistub_kernel_asize = kernel_asize;
__efistub_kernel_fsize = kernel_fsize;
__efistub_kernel_offset = kernel_offset;
+#if defined(CONFIG_EFI_EARLYCON) || defined(CONFIG_SYSFB)
__efistub_screen_info = screen_info;
+#endif
#endif
diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c
index 0d5edf1f7e4a1..407cd6b49bef6 100644
--- a/arch/loongarch/kernel/setup.c
+++ b/arch/loongarch/kernel/setup.c
@@ -16,7 +16,6 @@
#include <linux/dmi.h>
#include <linux/efi.h>
#include <linux/export.h>
-#include <linux/screen_info.h>
#include <linux/memblock.h>
#include <linux/initrd.h>
#include <linux/ioport.h>
@@ -57,10 +56,6 @@
#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);
struct cpuinfo_loongarch cpu_data[NR_CPUS] __read_mostly;
diff --git a/arch/riscv/kernel/image-vars.h b/arch/riscv/kernel/image-vars.h
index ea1a10355ce90..3df30dd1c458b 100644
--- a/arch/riscv/kernel/image-vars.h
+++ b/arch/riscv/kernel/image-vars.h
@@ -28,7 +28,9 @@ __efistub__start_kernel = _start_kernel;
__efistub__end = _end;
__efistub__edata = _edata;
__efistub___init_text_end = __init_text_end;
+#if defined(CONFIG_EFI_EARLYCON) || defined(CONFIG_SYSFB)
__efistub_screen_info = screen_info;
+#endif
#endif
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 0c466a50f1744..0624f44d43eca 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -15,7 +15,6 @@
#include <linux/memblock.h>
#include <linux/sched.h>
#include <linux/console.h>
-#include <linux/screen_info.h>
#include <linux/of_fdt.h>
#include <linux/sched/task.h>
#include <linux/smp.h>
@@ -40,10 +39,6 @@
#include "head.h"
-#if defined(CONFIG_EFI)
-struct screen_info screen_info __section(".data");
-#endif
-
/*
* The lucky hart to first increment this variable will boot the other cores.
* This is used before the kernel initializes the BSS so it can't be in the
diff --git a/drivers/firmware/efi/efi-init.c b/drivers/firmware/efi/efi-init.c
index ef0820f1a9246..d4987d0130801 100644
--- a/drivers/firmware/efi/efi-init.c
+++ b/drivers/firmware/efi/efi-init.c
@@ -55,6 +55,15 @@ static phys_addr_t __init efi_to_phys(unsigned long addr)
extern __weak const efi_config_table_type_t efi_arch_tables[];
+/*
+ * x86 defines its own screen_info and uses it even without EFI,
+ * everything else can get it from here.
+ */
+#if !defined(CONFIG_X86) && (defined(CONFIG_SYSFB) || defined(CONFIG_EFI_EARLYCON))
+struct screen_info screen_info __section(".data");
+EXPORT_SYMBOL_GPL(screen_info);
+#endif
+
static void __init init_screen_info(void)
{
struct screen_info *si;
@@ -240,5 +249,8 @@ void __init efi_init(void)
memblock_reserve(data.phys_map & PAGE_MASK,
PAGE_ALIGN(data.size + (data.phys_map & ~PAGE_MASK)));
- init_screen_info();
+ if (IS_ENABLED(CONFIG_X86) ||
+ IS_ENABLED(CONFIG_SYSFB) ||
+ IS_ENABLED(CONFIG_EFI_EARLYCON))
+ init_screen_info();
}
diff --git a/drivers/firmware/efi/libstub/efi-stub-entry.c b/drivers/firmware/efi/libstub/efi-stub-entry.c
index 2f1902e5d4075..a6c0498351905 100644
--- a/drivers/firmware/efi/libstub/efi-stub-entry.c
+++ b/drivers/firmware/efi/libstub/efi-stub-entry.c
@@ -13,7 +13,13 @@ struct screen_info *alloc_screen_info(void)
{
if (IS_ENABLED(CONFIG_ARM))
return __alloc_screen_info();
- return (void *)&screen_info + screen_info_offset;
+
+ if (IS_ENABLED(CONFIG_X86) ||
+ IS_ENABLED(CONFIG_EFI_EARLYCON) ||
+ IS_ENABLED(CONFIG_SYSFB))
+ return (void *)&screen_info + screen_info_offset;
+
+ return NULL;
}
/*
--
2.39.2
From: Arnd Bergmann <[email protected]>
To prepare for completely separating the VGA console screen_info from
the one used in EFI/sysfb, rename the vgacon instances and make them
local as much as possible.
ia64 and arm both have confurations with vgacon and efi, but the contents
never overlaps because ia64 has no EFI framebuffer, and arm only has
vga console on legacy platforms without EFI. Renaming these is required
before the EFI screen_info can be moved into drivers/firmware.
The ia64 vga console is actually registered in two places from
setup_arch(), but one of them is wrong, so drop the one in pcdp.c and
fix the one in setup.c to use the correct conditional.
x86 has to keep them together, as the boot protocol is used to switch
between VGA text console and framebuffer through the screen_info data.
Acked-by: Javier Martinez Canillas <[email protected]>
Acked-by: Khalid Aziz <[email protected]>
Acked-by: Helge Deller <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
---
arch/alpha/kernel/proto.h | 2 ++
arch/alpha/kernel/setup.c | 6 ++--
arch/alpha/kernel/sys_sio.c | 6 ++--
arch/arm/include/asm/setup.h | 5 ++++
arch/arm/kernel/atags_parse.c | 18 ++++++------
arch/arm/kernel/efi.c | 6 ----
arch/arm/kernel/setup.c | 6 ++--
arch/ia64/kernel/setup.c | 49 +++++++++++++++----------------
arch/mips/kernel/setup.c | 11 -------
arch/mips/mti-malta/malta-setup.c | 4 ++-
arch/mips/sibyte/swarm/setup.c | 24 ++++++++-------
arch/mips/sni/setup.c | 16 +++++-----
drivers/firmware/pcdp.c | 1 -
13 files changed, 74 insertions(+), 80 deletions(-)
diff --git a/arch/alpha/kernel/proto.h b/arch/alpha/kernel/proto.h
index 5816a31c1b386..2c89c1c557129 100644
--- a/arch/alpha/kernel/proto.h
+++ b/arch/alpha/kernel/proto.h
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/interrupt.h>
+#include <linux/screen_info.h>
#include <linux/io.h>
/* Prototypes of functions used across modules here in this directory. */
@@ -113,6 +114,7 @@ extern int boot_cpuid;
#ifdef CONFIG_VERBOSE_MCHECK
extern unsigned long alpha_verbose_mcheck;
#endif
+extern struct screen_info vgacon_screen_info;
/* srmcons.c */
#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SRM)
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index c004933468606..0738f9396f957 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -138,7 +138,7 @@ static char __initdata command_line[COMMAND_LINE_SIZE];
* code think we're on a VGA color display.
*/
-struct screen_info screen_info = {
+struct screen_info vgacon_screen_info = {
.orig_x = 0,
.orig_y = 25,
.orig_video_cols = 80,
@@ -146,8 +146,6 @@ struct screen_info screen_info = {
.orig_video_isVGA = 1,
.orig_video_points = 16
};
-
-EXPORT_SYMBOL(screen_info);
#endif
/*
@@ -654,7 +652,7 @@ setup_arch(char **cmdline_p)
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
- vgacon_register_screen(&screen_info);
+ vgacon_register_screen(&vgacon_screen_info);
#endif
#endif
diff --git a/arch/alpha/kernel/sys_sio.c b/arch/alpha/kernel/sys_sio.c
index 7de8a5d2d2066..086488ed83a7f 100644
--- a/arch/alpha/kernel/sys_sio.c
+++ b/arch/alpha/kernel/sys_sio.c
@@ -60,9 +60,9 @@ 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;
+ vgacon_screen_info.orig_y = 37;
+ vgacon_screen_info.orig_video_cols = 100;
+ vgacon_screen_info.orig_video_lines = 37;
#endif
lca_init_arch();
diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
index 546af8b1e3f65..cc106f946c691 100644
--- a/arch/arm/include/asm/setup.h
+++ b/arch/arm/include/asm/setup.h
@@ -11,6 +11,7 @@
#ifndef __ASMARM_SETUP_H
#define __ASMARM_SETUP_H
+#include <linux/screen_info.h>
#include <uapi/asm/setup.h>
@@ -35,4 +36,8 @@ void early_mm_init(const struct machine_desc *);
void adjust_lowmem_bounds(void);
void setup_dma_zone(const struct machine_desc *desc);
+#ifdef CONFIG_VGA_CONSOLE
+extern struct screen_info vgacon_screen_info;
+#endif
+
#endif
diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c
index 4c815da3b77b0..4ec591bde3dfa 100644
--- a/arch/arm/kernel/atags_parse.c
+++ b/arch/arm/kernel/atags_parse.c
@@ -72,15 +72,15 @@ __tagtable(ATAG_MEM, parse_tag_mem32);
#if defined(CONFIG_ARCH_FOOTBRIDGE) && defined(CONFIG_VGA_CONSOLE)
static int __init parse_tag_videotext(const struct tag *tag)
{
- screen_info.orig_x = tag->u.videotext.x;
- screen_info.orig_y = tag->u.videotext.y;
- screen_info.orig_video_page = tag->u.videotext.video_page;
- screen_info.orig_video_mode = tag->u.videotext.video_mode;
- screen_info.orig_video_cols = tag->u.videotext.video_cols;
- screen_info.orig_video_ega_bx = tag->u.videotext.video_ega_bx;
- screen_info.orig_video_lines = tag->u.videotext.video_lines;
- screen_info.orig_video_isVGA = tag->u.videotext.video_isvga;
- screen_info.orig_video_points = tag->u.videotext.video_points;
+ vgacon_screen_info.orig_x = tag->u.videotext.x;
+ vgacon_screen_info.orig_y = tag->u.videotext.y;
+ vgacon_screen_info.orig_video_page = tag->u.videotext.video_page;
+ vgacon_screen_info.orig_video_mode = tag->u.videotext.video_mode;
+ vgacon_screen_info.orig_video_cols = tag->u.videotext.video_cols;
+ vgacon_screen_info.orig_video_ega_bx = tag->u.videotext.video_ega_bx;
+ vgacon_screen_info.orig_video_lines = tag->u.videotext.video_lines;
+ vgacon_screen_info.orig_video_isVGA = tag->u.videotext.video_isvga;
+ vgacon_screen_info.orig_video_points = tag->u.videotext.video_points;
return 0;
}
diff --git a/arch/arm/kernel/efi.c b/arch/arm/kernel/efi.c
index e94655ef16bb3..6f9ec7d28a710 100644
--- a/arch/arm/kernel/efi.c
+++ b/arch/arm/kernel/efi.c
@@ -123,12 +123,6 @@ void __init arm_efi_init(void)
{
efi_init();
- if (screen_info.orig_video_isVGA == VIDEO_TYPE_EFI) {
- /* dummycon on ARM needs non-zero values for columns/lines */
- screen_info.orig_video_cols = 80;
- screen_info.orig_video_lines = 25;
- }
-
/* ARM does not permit early mappings to persist across paging_init() */
efi_memmap_unmap();
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 67ba140794bf6..c15dfdbe3d5ae 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -928,8 +928,8 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
request_resource(&ioport_resource, &lp2);
}
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_EFI)
-struct screen_info screen_info = {
+#if defined(CONFIG_VGA_CONSOLE)
+static struct screen_info vgacon_screen_info = {
.orig_video_lines = 30,
.orig_video_cols = 80,
.orig_video_mode = 0,
@@ -1197,7 +1197,7 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
- vgacon_register_screen(&screen_info);
+ vgacon_register_screen(&vgacon_screen_info);
#endif
#endif
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 2c9283fcd3759..82feae1323f40 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -86,7 +86,8 @@ 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)
+#if defined(CONFIG_EFI)
+/* No longer used on ia64, but needed for linking */
struct screen_info screen_info;
#endif
#ifdef CONFIG_VGA_CONSOLE
@@ -503,8 +504,9 @@ screen_info_setup(void)
{
#ifdef CONFIG_VGA_CONSOLE
unsigned int orig_x, orig_y, num_cols, num_rows, font_height;
+ static struct screen_info si;
- memset(&screen_info, 0, sizeof(screen_info));
+ memset(&si, 0, sizeof(si));
if (!ia64_boot_param->console_info.num_rows ||
!ia64_boot_param->console_info.num_cols) {
@@ -522,14 +524,26 @@ screen_info_setup(void)
font_height = 400 / num_rows;
}
- screen_info.orig_x = orig_x;
- screen_info.orig_y = orig_y;
- screen_info.orig_video_cols = num_cols;
- screen_info.orig_video_lines = num_rows;
- screen_info.orig_video_points = font_height;
- 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 */
+ si.orig_x = orig_x;
+ si.orig_y = orig_y;
+ si.orig_video_cols = num_cols;
+ si.orig_video_lines = num_rows;
+ si.orig_video_points = font_height;
+ si.orig_video_mode = 3; /* XXX fake */
+ si.orig_video_isVGA = 1; /* XXX fake */
+ si.orig_video_ega_bx = 3; /* XXX fake */
+
+ if (!conswitchp) {
+ /*
+ * Non-legacy systems may route legacy VGA MMIO range to system
+ * memory. vga_con probes the MMIO hole, so memory looks like
+ * a VGA device to it. The EFI memory map can tell us if it's
+ * memory so we can avoid this problem.
+ */
+ if (efi_mem_type(vga_console_membase + 0xA0000) !=
+ EFI_CONVENTIONAL_MEMORY) {
+ vgacon_register_screen(&si);
+ }
#endif
}
@@ -609,21 +623,6 @@ setup_arch (char **cmdline_p)
cpu_init(); /* initialize the bootstrap CPU */
mmu_context_init(); /* initialize context_id bitmap */
-#ifdef CONFIG_VT
- if (!conswitchp) {
-# if defined(CONFIG_VGA_CONSOLE)
- /*
- * Non-legacy systems may route legacy VGA MMIO range to system
- * memory. vga_con probes the MMIO hole, so memory looks like
- * a VGA device to it. The EFI memory map can tell us if it's
- * memory so we can avoid this problem.
- */
- if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY)
- vgacon_register_screen(&screen_info);
-# endif
- }
-#endif
-
/* enable IA-64 Machine Check Abort Handling unless disabled */
if (!nomca)
ia64_mca_init();
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index c395e2a5a2556..2d2ca024bd47a 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -15,7 +15,6 @@
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/export.h>
-#include <linux/screen_info.h>
#include <linux/memblock.h>
#include <linux/initrd.h>
#include <linux/root_dev.h>
@@ -54,10 +53,6 @@ struct cpuinfo_mips cpu_data[NR_CPUS] __read_mostly;
EXPORT_SYMBOL(cpu_data);
-#ifdef CONFIG_VGA_CONSOLE
-struct screen_info screen_info;
-#endif
-
/*
* Setup information
*
@@ -793,12 +788,6 @@ void __init setup_arch(char **cmdline_p)
if (IS_ENABLED(CONFIG_CPU_R4X00_BUGS64))
check_bugs64_early();
-#if defined(CONFIG_VT)
-#if defined(CONFIG_VGA_CONSOLE)
- vgacon_register_screen(&screen_info);
-#endif
-#endif
-
arch_mem_init(cmdline_p);
dmi_setup();
diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c
index 21cb3ac1237b7..3a2836e9d8566 100644
--- a/arch/mips/mti-malta/malta-setup.c
+++ b/arch/mips/mti-malta/malta-setup.c
@@ -161,7 +161,7 @@ static void __init pci_clock_check(void)
#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
static void __init screen_info_setup(void)
{
- screen_info = (struct screen_info) {
+ static struct screen_info si = {
.orig_x = 0,
.orig_y = 25,
.ext_mem_k = 0,
@@ -175,6 +175,8 @@ static void __init screen_info_setup(void)
.orig_video_isVGA = VIDEO_TYPE_VGAC,
.orig_video_points = 16
};
+
+ vgacon_register_screen(&si);
}
#endif
diff --git a/arch/mips/sibyte/swarm/setup.c b/arch/mips/sibyte/swarm/setup.c
index 37df504d3ecbb..74e7c242b6902 100644
--- a/arch/mips/sibyte/swarm/setup.c
+++ b/arch/mips/sibyte/swarm/setup.c
@@ -112,6 +112,19 @@ int update_persistent_clock64(struct timespec64 now)
}
}
+#ifdef CONFIG_VGA_CONSOLE
+static struct screen_info vgacon_screen_info = {
+ .orig_video_page = 52,
+ .orig_video_mode = 3,
+ .orig_video_cols = 80,
+ .flags = 12,
+ .orig_video_ega_bx = 3,
+ .orig_video_lines = 25,
+ .orig_video_isVGA = 0x22,
+ .orig_video_points = 16,
+};
+#endif
+
void __init plat_mem_setup(void)
{
#ifdef CONFIG_SIBYTE_BCM1x80
@@ -130,16 +143,7 @@ void __init plat_mem_setup(void)
swarm_rtc_type = RTC_M41T81;
#ifdef CONFIG_VGA_CONSOLE
- screen_info = (struct screen_info) {
- .orig_video_page = 52,
- .orig_video_mode = 3,
- .orig_video_cols = 80,
- .flags = 12,
- .orig_video_ega_bx = 3,
- .orig_video_lines = 25,
- .orig_video_isVGA = 0x22,
- .orig_video_points = 16,
- };
+ vgacon_register_screen(&vgacon_screen_info);
/* XXXKW for CFE, get lines/cols from environment */
#endif
}
diff --git a/arch/mips/sni/setup.c b/arch/mips/sni/setup.c
index 9984cf91be7d0..42fdb939c88d8 100644
--- a/arch/mips/sni/setup.c
+++ b/arch/mips/sni/setup.c
@@ -39,18 +39,20 @@ extern void sni_machine_power_off(void);
static void __init sni_display_setup(void)
{
#if defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_FW_ARC)
- struct screen_info *si = &screen_info;
+ static struct screen_info si;
DISPLAY_STATUS *di;
di = ArcGetDisplayStatus(1);
if (di) {
- si->orig_x = di->CursorXPosition;
- si->orig_y = di->CursorYPosition;
- si->orig_video_cols = di->CursorMaxXPosition;
- si->orig_video_lines = di->CursorMaxYPosition;
- si->orig_video_isVGA = VIDEO_TYPE_VGAC;
- si->orig_video_points = 16;
+ si.orig_x = di->CursorXPosition;
+ si.orig_y = di->CursorYPosition;
+ si.orig_video_cols = di->CursorMaxXPosition;
+ si.orig_video_lines = di->CursorMaxYPosition;
+ si.orig_video_isVGA = VIDEO_TYPE_VGAC;
+ si.orig_video_points = 16;
+
+ vgacon_register_screen(&si);
}
#endif
}
diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
index 667a595373b2d..876b3e9b37e25 100644
--- a/drivers/firmware/pcdp.c
+++ b/drivers/firmware/pcdp.c
@@ -72,7 +72,6 @@ setup_vga_console(struct pcdp_device *dev)
return -ENODEV;
}
- vgacon_register_screen(&screen_info);
printk(KERN_INFO "PCDP: VGA console\n");
return 0;
#else
--
2.39.2
On Mon, Oct 09, 2023 at 11:18:45PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <[email protected]>
>
> After the vga console no longer relies on global screen_info, there are
> only two remaining use cases:
>
> - on the x86 architecture, it is used for multiple boot methods
> (bzImage, EFI, Xen, kexec) to commucate the initial VGA or framebuffer
> settings to a number of device drivers.
>
> - on other architectures, it is only used as part of the EFI stub,
> and only for the three sysfb framebuffers (simpledrm, simplefb, efifb).
>
> Remove the duplicate data structure definitions by moving it into the
> efi-init.c file that sets it up initially for the EFI case, leaving x86
> as an exception that retains its own definition for non-EFI boots.
>
> The added #ifdefs here are optional, I added them to further limit the
> reach of screen_info to configurations that have at least one of the
> users enabled.
>
> Reviewed-by: Ard Biesheuvel <[email protected]>
> Reviewed-by: Javier Martinez Canillas <[email protected]>
> Acked-by: Helge Deller <[email protected]>
> Signed-off-by: Arnd Bergmann <[email protected]>
> ---
> arch/arm/kernel/setup.c | 4 ----
> arch/arm64/kernel/efi.c | 4 ----
> arch/arm64/kernel/image-vars.h | 2 ++
It's more Ard's thing and he reviewed it already but if you need another
ack:
Acked-by: Catalin Marinas <[email protected]>
Hi Arnd,
On Mon, Oct 9, 2023 at 11:19 PM Arnd Bergmann <[email protected]> wrote:
> From: Arnd Bergmann <[email protected]>
>
> The list of dependencies here is phrased as an opt-out, but this is missing
> a lot of architectures that don't actually support VGA consoles, and some
> of the entries are stale:
>
> - powerpc used to support VGA consoles in the old arch/ppc codebase, but
> the merged arch/powerpc never did
>
> - arm lists footbridge, integrator and netwinder, but netwinder is actually
> part of footbridge, and integrator does not appear to have an actual
> VGA hardware, or list it in its ATAG or DT.
>
> - mips has a few platforms (malta, sibyte, and sni) that initialize
> screen_info, on everything else the console is selected but cannot
> actually work.
>
> - csky, hexgagon, loongarch, nios2, riscv and xtensa are not listed
> in the opt-out table and declare a screen_info to allow building
> vga_con, but this cannot work because the console is never selected.
>
> Replace this with an opt-in table that lists only the platforms that
> remain. This is effectively x86, plus a couple of historic workstation
> and server machines that reused parts of the x86 system architecture.
>
> Reviewed-by: Javier Martinez Canillas <[email protected]>
> Reviewed-by: Thomas Zimmermann <[email protected]>
> Reviewed-by: Khalid Aziz <[email protected]>
> Acked-by: Helge Deller <[email protected]>
> Signed-off-by: Arnd Bergmann <[email protected]>
Thanks for your patch!
Reviewed-by: Geert Uytterhoeven <[email protected]>
A few suggestions for simplification below...
> --- a/drivers/video/console/Kconfig
> +++ b/drivers/video/console/Kconfig
> @@ -7,9 +7,9 @@ menu "Console display driver support"
>
> config VGA_CONSOLE
> bool "VGA text console" if EXPERT || !X86
> - depends on !4xx && !PPC_8xx && !SPARC && !M68K && !PARISC && !SUPERH && \
> - (!ARM || ARCH_FOOTBRIDGE || ARCH_INTEGRATOR || ARCH_NETWINDER) && \
> - !ARM64 && !ARC && !MICROBLAZE && !OPENRISC && !S390 && !UML
> + depends on ALPHA || IA64 || X86 || \
> + (ARM && ARCH_FOOTBRIDGE) || \
You can drop "ARM &&", as it is implied by ARCH_FOOTBRIDGE.
> + (MIPS && (MIPS_MALTA || SIBYTE_BCM112X || SIBYTE_SB1250 || SIBYTE_BCM1x80 || SNI_RM))
Likewise for "MIPS &&".
The 3 SIBYTE dependencies can be replaced by SIBYTE_SB1xxx_SOC.
> select APERTURE_HELPERS if (DRM || FB || VFIO_PCI_CORE)
> default y
> help
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
On Mon, Oct 09, 2023 at 11:18:36PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <[email protected]>
>
> v3 changelog
>
> No real changes, just rebased for context changes, and picked up the Acks.
>
> This now conflicts with the ia64 removal and introduces one new dependency
> on IA64, but that is harmless and trivial to deal with later.
>
> Link: https://lore.kernel.org/lkml/[email protected]/
> ---
> v2 changelog
>
> I refreshed the first four patches that I sent before with very minor
> updates, and then added some more to further disaggregate the use
> of screen_info:
>
> - I found that powerpc wasn't using vga16fb any more
>
> - vgacon can be almost entirely separated from the global
> screen_info, except on x86
>
> - similarly, the EFI framebuffer initialization can be
> kept separate, except on x86.
>
> I did extensive build testing on arm/arm64/x86 and the normal built bot
> testing for the other architectures.
>
> Which tree should this get merged through?
I guess if no one else volunteers (Greg maybe?) I can stuff this into
drm-misc ...
-Sima
>
> Link: https://lore.kernel.org/lkml/[email protected]/
>
>
> Arnd Bergmann (9):
> vgacon: rework Kconfig dependencies
> vgacon: rework screen_info #ifdef checks
> dummycon: limit Arm console size hack to footbridge
> vgacon, arch/*: remove unused screen_info definitions
> vgacon: remove screen_info dependency
> vgacon: clean up global screen_info instances
> vga16fb: drop powerpc support
> hyperv: avoid dependency on screen_info
> efi: move screen_info into efi init code
>
> arch/alpha/kernel/proto.h | 2 +
> arch/alpha/kernel/setup.c | 8 +--
> arch/alpha/kernel/sys_sio.c | 8 ++-
> arch/arm/include/asm/setup.h | 5 ++
> arch/arm/kernel/atags_parse.c | 20 +++---
> arch/arm/kernel/efi.c | 6 --
> arch/arm/kernel/setup.c | 11 +--
> arch/arm64/kernel/efi.c | 4 --
> arch/arm64/kernel/image-vars.h | 2 +
> arch/csky/kernel/setup.c | 12 ----
> arch/hexagon/kernel/Makefile | 2 -
> arch/hexagon/kernel/screen_info.c | 3 -
> arch/ia64/kernel/setup.c | 53 ++++++++-------
> arch/loongarch/kernel/efi.c | 3 +-
> arch/loongarch/kernel/image-vars.h | 2 +
> arch/loongarch/kernel/setup.c | 3 -
> arch/mips/jazz/setup.c | 9 ---
> arch/mips/kernel/setup.c | 11 ---
> arch/mips/mti-malta/malta-setup.c | 4 +-
> arch/mips/sibyte/swarm/setup.c | 26 ++++---
> arch/mips/sni/setup.c | 18 ++---
> arch/nios2/kernel/setup.c | 5 --
> arch/powerpc/kernel/setup-common.c | 16 -----
> arch/riscv/kernel/image-vars.h | 2 +
> arch/riscv/kernel/setup.c | 12 ----
> arch/sh/kernel/setup.c | 5 --
> arch/sparc/kernel/setup_32.c | 13 ----
> arch/sparc/kernel/setup_64.c | 13 ----
> arch/x86/kernel/setup.c | 2 +-
> arch/xtensa/kernel/setup.c | 12 ----
> drivers/firmware/efi/efi-init.c | 14 +++-
> drivers/firmware/efi/libstub/efi-stub-entry.c | 8 ++-
> drivers/firmware/pcdp.c | 1 -
> drivers/gpu/drm/hyperv/hyperv_drm_drv.c | 7 +-
> drivers/hv/vmbus_drv.c | 6 +-
> drivers/video/console/Kconfig | 11 +--
> drivers/video/console/dummycon.c | 2 +-
> drivers/video/console/vgacon.c | 68 +++++++++++--------
> drivers/video/fbdev/Kconfig | 2 +-
> drivers/video/fbdev/hyperv_fb.c | 8 +--
> drivers/video/fbdev/vga16fb.c | 9 +--
> include/linux/console.h | 7 ++
> 42 files changed, 183 insertions(+), 252 deletions(-)
> delete mode 100644 arch/hexagon/kernel/screen_info.c
>
> --
> 2.39.2
>
> Cc: "David S. Miller" <[email protected]>
> Cc: "K. Y. Srinivasan" <[email protected]>
> Cc: Ard Biesheuvel <[email protected]>
> Cc: Borislav Petkov <[email protected]>
> Cc: Brian Cain <[email protected]>
> Cc: Catalin Marinas <[email protected]>
> Cc: Christophe Leroy <[email protected]>
> Cc: Daniel Vetter <[email protected]>
> Cc: Dave Hansen <[email protected]>
> Cc: David Airlie <[email protected]>
> Cc: Deepak Rawat <[email protected]>
> Cc: Dexuan Cui <[email protected]>
> Cc: Dinh Nguyen <[email protected]>
> Cc: Greg Kroah-Hartman <[email protected]>
> Cc: Guo Ren <[email protected]>
> Cc: Haiyang Zhang <[email protected]>
> Cc: Helge Deller <[email protected]>
> Cc: Huacai Chen <[email protected]>
> Cc: Ingo Molnar <[email protected]>
> Cc: Javier Martinez Canillas <[email protected]>
> Cc: John Paul Adrian Glaubitz <[email protected]>
> Cc: Khalid Aziz <[email protected]>
> Cc: Linus Walleij <[email protected]>
> Cc: Matt Turner <[email protected]>
> Cc: Max Filippov <[email protected]>
> Cc: Michael Ellerman <[email protected]>
> Cc: Nicholas Piggin <[email protected]>
> Cc: Palmer Dabbelt <[email protected]>
> Cc: Russell King <[email protected]>
> Cc: Thomas Bogendoerfer <[email protected]>
> Cc: Thomas Gleixner <[email protected]>
> Cc: Thomas Zimmermann <[email protected]>
> Cc: WANG Xuerui <[email protected]>
> Cc: Wei Liu <[email protected]>
> Cc: Will Deacon <[email protected]>
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
On Tue, Oct 10, 2023 at 01:48:07PM +0200, Daniel Vetter wrote:
> On Mon, Oct 09, 2023 at 11:18:36PM +0200, Arnd Bergmann wrote:
> > From: Arnd Bergmann <[email protected]>
> >
> > v3 changelog
> >
> > No real changes, just rebased for context changes, and picked up the Acks.
> >
> > This now conflicts with the ia64 removal and introduces one new dependency
> > on IA64, but that is harmless and trivial to deal with later.
> >
> > Link: https://lore.kernel.org/lkml/[email protected]/
> > ---
> > v2 changelog
> >
> > I refreshed the first four patches that I sent before with very minor
> > updates, and then added some more to further disaggregate the use
> > of screen_info:
> >
> > - I found that powerpc wasn't using vga16fb any more
> >
> > - vgacon can be almost entirely separated from the global
> > screen_info, except on x86
> >
> > - similarly, the EFI framebuffer initialization can be
> > kept separate, except on x86.
> >
> > I did extensive build testing on arm/arm64/x86 and the normal built bot
> > testing for the other architectures.
> >
> > Which tree should this get merged through?
>
> I guess if no one else volunteers (Greg maybe?) I can stuff this into
> drm-misc ...
Oh, hey, console code is for me, I keep forgetting.
I can take it, looks like we have enough acks now, thanks for reminding
me!
greg k-h