mirror of
https://github.com/raspberrypi/linux.git
synced 2025-12-13 05:20:13 +00:00
e831101a73
Pull arm64 updates from Catalin Marinas:
- Kexec support for arm64
- Kprobes support
- Expose MIDR_EL1 and REVIDR_EL1 CPU identification registers to sysfs
- Trapping of user space cache maintenance operations and emulation in
the kernel (CPU errata workaround)
- Clean-up of the early page tables creation (kernel linear mapping,
EFI run-time maps) to avoid splitting larger blocks (e.g. pmds) into
smaller ones (e.g. ptes)
- VDSO support for CLOCK_MONOTONIC_RAW in clock_gettime()
- ARCH_HAS_KCOV enabled for arm64
- Optimise IP checksum helpers
- SWIOTLB optimisation to only allocate/initialise the buffer if the
available RAM is beyond the 32-bit mask
- Properly handle the "nosmp" command line argument
- Fix for the initialisation of the CPU debug state during early boot
- vdso-offsets.h build dependency workaround
- Build fix when RANDOMIZE_BASE is enabled with MODULES off
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (64 commits)
arm64: arm: Fix-up the removal of the arm64 regs_query_register_name() prototype
arm64: Only select ARM64_MODULE_PLTS if MODULES=y
arm64: mm: run pgtable_page_ctor() on non-swapper translation table pages
arm64: mm: make create_mapping_late() non-allocating
arm64: Honor nosmp kernel command line option
arm64: Fix incorrect per-cpu usage for boot CPU
arm64: kprobes: Add KASAN instrumentation around stack accesses
arm64: kprobes: Cleanup jprobe_return
arm64: kprobes: Fix overflow when saving stack
arm64: kprobes: WARN if attempting to step with PSTATE.D=1
arm64: debug: remove unused local_dbg_{enable, disable} macros
arm64: debug: remove redundant spsr manipulation
arm64: debug: unmask PSTATE.D earlier
arm64: localise Image objcopy flags
arm64: ptrace: remove extra define for CPSR's E bit
kprobes: Add arm64 case in kprobe example module
arm64: Add kernel return probes support (kretprobes)
arm64: Add trampoline code for kretprobes
arm64: kprobes instruction simulation support
arm64: Treat all entry code as non-kprobe-able
...
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
#ifndef _ASM_EFI_H
|
|
#define _ASM_EFI_H
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/mmu_context.h>
|
|
#include <asm/neon.h>
|
|
#include <asm/ptrace.h>
|
|
#include <asm/tlbflush.h>
|
|
|
|
#ifdef CONFIG_EFI
|
|
extern void efi_init(void);
|
|
#else
|
|
#define efi_init()
|
|
#endif
|
|
|
|
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() \
|
|
({ \
|
|
kernel_neon_begin(); \
|
|
efi_virtmap_load(); \
|
|
})
|
|
|
|
#define arch_efi_call_virt(p, f, args...) \
|
|
({ \
|
|
efi_##f##_t *__f; \
|
|
__f = p->f; \
|
|
__f(args); \
|
|
})
|
|
|
|
#define arch_efi_call_virt_teardown() \
|
|
({ \
|
|
efi_virtmap_unload(); \
|
|
kernel_neon_end(); \
|
|
})
|
|
|
|
#define ARCH_EFI_IRQ_FLAGS_MASK (PSR_D_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT)
|
|
|
|
/* arch specific definitions used by the stub code */
|
|
|
|
/*
|
|
* AArch64 requires the DTB to be 8-byte aligned in the first 512MiB from
|
|
* start of kernel and may not cross a 2MiB boundary. We set alignment to
|
|
* 2MiB so we know it won't cross a 2MiB boundary.
|
|
*/
|
|
#define EFI_FDT_ALIGN SZ_2M /* used by allocate_new_fdt_and_exit_boot() */
|
|
#define MAX_FDT_OFFSET SZ_512M
|
|
|
|
#define efi_call_early(f, ...) sys_table_arg->boottime->f(__VA_ARGS__)
|
|
#define __efi_call_early(f, ...) f(__VA_ARGS__)
|
|
#define efi_is_64bit() (true)
|
|
|
|
#define alloc_screen_info(x...) &screen_info
|
|
#define free_screen_info(x...)
|
|
|
|
static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
|
|
{
|
|
}
|
|
|
|
#define EFI_ALLOC_ALIGN SZ_64K
|
|
|
|
/*
|
|
* On ARM systems, virtually remapped UEFI runtime services are set up in two
|
|
* distinct stages:
|
|
* - The stub retrieves the final version of the memory map from UEFI, populates
|
|
* the virt_addr fields and calls the SetVirtualAddressMap() [SVAM] runtime
|
|
* service to communicate the new mapping to the firmware (Note that the new
|
|
* mapping is not live at this time)
|
|
* - During an early initcall(), the EFI system table is permanently remapped
|
|
* and the virtual remapping of the UEFI Runtime Services regions is loaded
|
|
* into a private set of page tables. If this all succeeds, the Runtime
|
|
* Services are enabled and the EFI_RUNTIME_SERVICES bit set.
|
|
*/
|
|
|
|
static inline void efi_set_pgd(struct mm_struct *mm)
|
|
{
|
|
switch_mm(NULL, mm, NULL);
|
|
}
|
|
|
|
void efi_virtmap_load(void);
|
|
void efi_virtmap_unload(void);
|
|
|
|
#endif /* _ASM_EFI_H */
|