mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
3d8dfe75ef
- Pseudo NMI support for arm64 using GICv3 interrupt priorities - uaccess macros clean-up (unsafe user accessors also merged but reverted, waiting for objtool support on arm64) - ptrace regsets for Pointer Authentication (ARMv8.3) key management - inX() ordering w.r.t. delay() on arm64 and riscv (acks in place by the riscv maintainers) - arm64/perf updates: PMU bindings converted to json-schema, unused variable and misleading comment removed - arm64/debug fixes to ensure checking of the triggering exception level and to avoid the propagation of the UNKNOWN FAR value into the si_code for debug signals - Workaround for Fujitsu A64FX erratum 010001 - lib/raid6 ARM NEON optimisations - NR_CPUS now defaults to 256 on arm64 - Minor clean-ups (documentation/comments, Kconfig warning, unused asm-offsets, clang warnings) - MAINTAINERS update for list information to the ARM64 ACPI entry -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE5RElWfyWxS+3PLO2a9axLQDIXvEFAlyCl0cACgkQa9axLQDI XvEyKxAAiogBZLbyhcy8bTUHVzVoJE0FyAkdO2wWnnaff2Ohkhy1Y/npv33IeK2q RknxqDIx2DUUVPJNRZGoI/WwBtTZdKaAnW4rIKG84yC1eAkFcd96WQasaZzcp1qY HmvbJiYXM0bh+0J7i3Wgry/QzOkrltJFJW2kp6Wd5aFE+R1WyWyxT6d+Fp0J3vlA bT70jlpBK6LXEOmmBS+04Ml02+8MvaGxIl8EInBHSfDLRLErj5E8n41rRHKUiSWz maWI+kVoLYwOE68xiZlDftUBEeQpUSWgg2nxeK+640QSl1wJmVcRcY9nm6TZeMG2 AiZTR9a7cP5rrdSN5suUmb7d4AMMVlVMisGDlwb+9oCxeTRDzg0uwACaVgHfPqQr UeBdHbL9nStN7uBH23H8L9mKk+tqpFmk0sgzdrKejOwysAiqWV8aazb/Na3qnVRl J1B5opxMnGOsjXmHvtG/tiZl281Uwz5ZmzfLmIY3gUZgUgdA3511Egp0ry5y1dzJ SkYC4Hmzb2ybQvXGIDDa3OzCwXXiqyqKsO+O8Egg1k4OIwbp3w+NHE7gKeA+dMgD gjN7zEalCUi46Q28xiCPEb+88BpQ18czIWGQLb9mAnmYeZPjqqenXKXuRHr4lgVe jPURJ/vqvFEglZJN1RDuQHKzHEcm5f2XE566sMZYdSoeiUCb0QM= =2U56 -----END PGP SIGNATURE----- Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Catalin Marinas: - Pseudo NMI support for arm64 using GICv3 interrupt priorities - uaccess macros clean-up (unsafe user accessors also merged but reverted, waiting for objtool support on arm64) - ptrace regsets for Pointer Authentication (ARMv8.3) key management - inX() ordering w.r.t. delay() on arm64 and riscv (acks in place by the riscv maintainers) - arm64/perf updates: PMU bindings converted to json-schema, unused variable and misleading comment removed - arm64/debug fixes to ensure checking of the triggering exception level and to avoid the propagation of the UNKNOWN FAR value into the si_code for debug signals - Workaround for Fujitsu A64FX erratum 010001 - lib/raid6 ARM NEON optimisations - NR_CPUS now defaults to 256 on arm64 - Minor clean-ups (documentation/comments, Kconfig warning, unused asm-offsets, clang warnings) - MAINTAINERS update for list information to the ARM64 ACPI entry * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (54 commits) arm64: mmu: drop paging_init comments arm64: debug: Ensure debug handlers check triggering exception level arm64: debug: Don't propagate UNKNOWN FAR into si_code for debug signals Revert "arm64: uaccess: Implement unsafe accessors" arm64: avoid clang warning about self-assignment arm64: Kconfig.platforms: fix warning unmet direct dependencies lib/raid6: arm: optimize away a mask operation in NEON recovery routine lib/raid6: use vdupq_n_u8 to avoid endianness warnings arm64: io: Hook up __io_par() for inX() ordering riscv: io: Update __io_[p]ar() macros to take an argument asm-generic/io: Pass result of I/O accessor to __io_[p]ar() arm64: Add workaround for Fujitsu A64FX erratum 010001 arm64: Rename get_thread_info() arm64: Remove documentation about TIF_USEDFPU arm64: irqflags: Fix clang build warnings arm64: Enable the support of pseudo-NMIs arm64: Skip irqflags tracing for NMI in IRQs disabled context arm64: Skip preemption when exiting an NMI arm64: Handle serror in NMI context irqchip/gic-v3: Allow interrupts to be set as pseudo-NMI ...
175 lines
3.8 KiB
C
175 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Extensible Firmware Interface
|
|
*
|
|
* Based on Extensible Firmware Interface Specification version 2.4
|
|
*
|
|
* Copyright (C) 2013, 2014 Linaro Ltd.
|
|
*/
|
|
|
|
#include <linux/dmi.h>
|
|
#include <linux/efi.h>
|
|
#include <linux/io.h>
|
|
#include <linux/memblock.h>
|
|
#include <linux/mm_types.h>
|
|
#include <linux/preempt.h>
|
|
#include <linux/rbtree.h>
|
|
#include <linux/rwsem.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/spinlock.h>
|
|
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/efi.h>
|
|
#include <asm/mmu.h>
|
|
#include <asm/pgalloc.h>
|
|
#include <asm/pgtable.h>
|
|
|
|
extern u64 efi_system_table;
|
|
|
|
#ifdef CONFIG_ARM64_PTDUMP_DEBUGFS
|
|
#include <asm/ptdump.h>
|
|
|
|
static struct ptdump_info efi_ptdump_info = {
|
|
.mm = &efi_mm,
|
|
.markers = (struct addr_marker[]){
|
|
{ 0, "UEFI runtime start" },
|
|
{ DEFAULT_MAP_WINDOW_64, "UEFI runtime end" },
|
|
{ -1, NULL }
|
|
},
|
|
.base_addr = 0,
|
|
};
|
|
|
|
static int __init ptdump_init(void)
|
|
{
|
|
if (efi_enabled(EFI_RUNTIME_SERVICES))
|
|
ptdump_debugfs_register(&efi_ptdump_info, "efi_page_tables");
|
|
|
|
return 0;
|
|
}
|
|
device_initcall(ptdump_init);
|
|
|
|
#endif
|
|
|
|
static bool __init efi_virtmap_init(void)
|
|
{
|
|
efi_memory_desc_t *md;
|
|
bool systab_found;
|
|
|
|
efi_mm.pgd = pgd_alloc(&efi_mm);
|
|
mm_init_cpumask(&efi_mm);
|
|
init_new_context(NULL, &efi_mm);
|
|
|
|
systab_found = false;
|
|
for_each_efi_memory_desc(md) {
|
|
phys_addr_t phys = md->phys_addr;
|
|
int ret;
|
|
|
|
if (!(md->attribute & EFI_MEMORY_RUNTIME))
|
|
continue;
|
|
if (md->virt_addr == 0)
|
|
return false;
|
|
|
|
ret = efi_create_mapping(&efi_mm, md);
|
|
if (ret) {
|
|
pr_warn(" EFI remap %pa: failed to create mapping (%d)\n",
|
|
&phys, ret);
|
|
return false;
|
|
}
|
|
/*
|
|
* If this entry covers the address of the UEFI system table,
|
|
* calculate and record its virtual address.
|
|
*/
|
|
if (efi_system_table >= phys &&
|
|
efi_system_table < phys + (md->num_pages * EFI_PAGE_SIZE)) {
|
|
efi.systab = (void *)(unsigned long)(efi_system_table -
|
|
phys + md->virt_addr);
|
|
systab_found = true;
|
|
}
|
|
}
|
|
if (!systab_found) {
|
|
pr_err("No virtual mapping found for the UEFI System Table\n");
|
|
return false;
|
|
}
|
|
|
|
if (efi_memattr_apply_permissions(&efi_mm, efi_set_mapping_permissions))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Enable the UEFI Runtime Services if all prerequisites are in place, i.e.,
|
|
* non-early mapping of the UEFI system table and virtual mappings for all
|
|
* EFI_MEMORY_RUNTIME regions.
|
|
*/
|
|
static int __init arm_enable_runtime_services(void)
|
|
{
|
|
u64 mapsize;
|
|
|
|
if (!efi_enabled(EFI_BOOT)) {
|
|
pr_info("EFI services will not be available.\n");
|
|
return 0;
|
|
}
|
|
|
|
efi_memmap_unmap();
|
|
|
|
mapsize = efi.memmap.desc_size * efi.memmap.nr_map;
|
|
|
|
if (efi_memmap_init_late(efi.memmap.phys_map, mapsize)) {
|
|
pr_err("Failed to remap EFI memory map\n");
|
|
return 0;
|
|
}
|
|
|
|
if (efi_runtime_disabled()) {
|
|
pr_info("EFI runtime services will be disabled.\n");
|
|
return 0;
|
|
}
|
|
|
|
if (efi_enabled(EFI_RUNTIME_SERVICES)) {
|
|
pr_info("EFI runtime services access via paravirt.\n");
|
|
return 0;
|
|
}
|
|
|
|
pr_info("Remapping and enabling EFI services.\n");
|
|
|
|
if (!efi_virtmap_init()) {
|
|
pr_err("UEFI virtual mapping missing or invalid -- runtime services will not be available\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Set up runtime services function pointers */
|
|
efi_native_runtime_setup();
|
|
set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
|
|
|
|
return 0;
|
|
}
|
|
early_initcall(arm_enable_runtime_services);
|
|
|
|
void efi_virtmap_load(void)
|
|
{
|
|
preempt_disable();
|
|
efi_set_pgd(&efi_mm);
|
|
}
|
|
|
|
void efi_virtmap_unload(void)
|
|
{
|
|
efi_set_pgd(current->active_mm);
|
|
preempt_enable();
|
|
}
|
|
|
|
|
|
static int __init arm_dmi_init(void)
|
|
{
|
|
/*
|
|
* On arm64/ARM, DMI depends on UEFI, and dmi_scan_machine() needs to
|
|
* be called early because dmi_id_init(), which is an arch_initcall
|
|
* itself, depends on dmi_scan_machine() having been called already.
|
|
*/
|
|
dmi_scan_machine();
|
|
if (dmi_available)
|
|
dmi_set_dump_stack_arch_desc();
|
|
return 0;
|
|
}
|
|
core_initcall(arm_dmi_init);
|