8633ef82f1
The register_gop_device() function registers an "efi-framebuffer" platform
device to match against the efifb driver, to have an early framebuffer for
EFI platforms.
But there is already support to do exactly the same by the Generic System
Framebuffers (sysfb) driver. This used to be only for X86 but it has been
moved to drivers/firmware and could be reused by other architectures.
Also, besides supporting registering an "efi-framebuffer", this driver can
register a "simple-framebuffer" allowing to use the siple{fb,drm} drivers
on non-X86 EFI platforms. For example, on aarch64 these drivers can only
be used with DT and doesn't have code to register a "simple-frambuffer"
platform device when booting with EFI.
For these reasons, let's remove the register_gop_device() duplicated code
and instead move the platform specific logic that's there to sysfb driver.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210625131359.1804394-1-javierm@redhat.com
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
|
|
*/
|
|
|
|
#ifndef __ASM_ARM_EFI_H
|
|
#define __ASM_ARM_EFI_H
|
|
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/cachetype.h>
|
|
#include <asm/early_ioremap.h>
|
|
#include <asm/fixmap.h>
|
|
#include <asm/highmem.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mmu_context.h>
|
|
#include <asm/ptrace.h>
|
|
|
|
#ifdef CONFIG_EFI
|
|
void efi_init(void);
|
|
extern void efifb_setup_from_dmi(struct screen_info *si, const char *opt);
|
|
|
|
int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
|
|
int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md);
|
|
|
|
#define arch_efi_call_virt_setup() efi_virtmap_load()
|
|
#define arch_efi_call_virt_teardown() efi_virtmap_unload()
|
|
|
|
#define arch_efi_call_virt(p, f, args...) \
|
|
({ \
|
|
efi_##f##_t *__f; \
|
|
__f = p->f; \
|
|
__f(args); \
|
|
})
|
|
|
|
#define ARCH_EFI_IRQ_FLAGS_MASK \
|
|
(PSR_J_BIT | PSR_E_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT | \
|
|
PSR_T_BIT | MODE_MASK)
|
|
|
|
static inline void efi_set_pgd(struct mm_struct *mm)
|
|
{
|
|
check_and_switch_context(mm, NULL);
|
|
}
|
|
|
|
void efi_virtmap_load(void);
|
|
void efi_virtmap_unload(void);
|
|
|
|
#else
|
|
#define efi_init()
|
|
#endif /* CONFIG_EFI */
|
|
|
|
/* arch specific definitions used by the stub code */
|
|
|
|
struct screen_info *alloc_screen_info(void);
|
|
void free_screen_info(struct screen_info *si);
|
|
|
|
/*
|
|
* A reasonable upper bound for the uncompressed kernel size is 32 MBytes,
|
|
* so we will reserve that amount of memory. We have no easy way to tell what
|
|
* the actuall size of code + data the uncompressed kernel will use.
|
|
* If this is insufficient, the decompressor will relocate itself out of the
|
|
* way before performing the decompression.
|
|
*/
|
|
#define MAX_UNCOMP_KERNEL_SIZE SZ_32M
|
|
|
|
/*
|
|
* phys-to-virt patching requires that the physical to virtual offset is a
|
|
* multiple of 2 MiB. However, using an alignment smaller than TEXT_OFFSET
|
|
* here throws off the memory allocation logic, so let's use the lowest power
|
|
* of two greater than 2 MiB and greater than TEXT_OFFSET.
|
|
*/
|
|
#define EFI_PHYS_ALIGN max(UL(SZ_2M), roundup_pow_of_two(TEXT_OFFSET))
|
|
|
|
/* on ARM, the initrd should be loaded in a lowmem region */
|
|
static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr)
|
|
{
|
|
return round_down(image_addr, SZ_4M) + SZ_512M;
|
|
}
|
|
|
|
struct efi_arm_entry_state {
|
|
u32 cpsr_before_ebs;
|
|
u32 sctlr_before_ebs;
|
|
u32 cpsr_after_ebs;
|
|
u32 sctlr_after_ebs;
|
|
};
|
|
|
|
static inline void efi_capsule_flush_cache_range(void *addr, int size)
|
|
{
|
|
__cpuc_flush_dcache_area(addr, size);
|
|
}
|
|
|
|
#endif /* _ASM_ARM_EFI_H */
|