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-rw-r--r--arch/arm64/Kconfig16
-rw-r--r--arch/arm64/include/asm/efi.h14
-rw-r--r--arch/arm64/kernel/Makefile3
-rw-r--r--arch/arm64/kernel/efi-entry.S109
-rw-r--r--arch/arm64/kernel/efi-stub.c79
-rw-r--r--arch/arm64/kernel/efi.c469
-rw-r--r--arch/arm64/kernel/head.S112
-rw-r--r--arch/arm64/kernel/setup.c5
-rw-r--r--arch/ia64/kernel/efi.c59
-rw-r--r--arch/x86/boot/compressed/eboot.c121
-rw-r--r--arch/x86/boot/compressed/eboot.h52
-rw-r--r--arch/x86/include/asm/efi.h2
-rw-r--r--arch/x86/kernel/setup.c6
-rw-r--r--arch/x86/platform/efi/efi.c149
14 files changed, 926 insertions, 270 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index dea35c100fd6..df8591954ab9 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -405,6 +405,20 @@ config BUILD_ARM64_APPENDED_DTB_IMAGE_NAMES
Space separated list of names of dtbs to append when
building a concatenated Image.gz-dtb.
+config EFI
+ bool "UEFI runtime support"
+ depends on OF && !CPU_BIG_ENDIAN
+ select LIBFDT
+ select UCS2_STRING
+ select EFI_PARAMS_FROM_FDT
+ default y
+ help
+ This option provides support for runtime services provided
+ by UEFI firmware (such as non-volatile variables, realtime
+ clock, and platform reset). A UEFI stub is also provided to
+ allow the kernel to be booted as an EFI application. This
+ is only useful on systems that have UEFI firmware.
+
endmenu
menu "Userspace binary formats"
@@ -455,6 +469,8 @@ source "net/Kconfig"
source "drivers/Kconfig"
+source "drivers/firmware/Kconfig"
+
source "fs/Kconfig"
source "arch/arm64/Kconfig.debug"
diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h
new file mode 100644
index 000000000000..5a46c4e7f539
--- /dev/null
+++ b/arch/arm64/include/asm/efi.h
@@ -0,0 +1,14 @@
+#ifndef _ASM_EFI_H
+#define _ASM_EFI_H
+
+#include <asm/io.h>
+
+#ifdef CONFIG_EFI
+extern void efi_init(void);
+extern void efi_idmap_init(void);
+#else
+#define efi_init()
+#define efi_idmap_init()
+#endif
+
+#endif /* _ASM_EFI_H */
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index 6a81721f3382..ac389d32ccde 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -4,6 +4,8 @@
CPPFLAGS_vmlinux.lds := -DTEXT_OFFSET=$(TEXT_OFFSET)
AFLAGS_head.o := -DTEXT_OFFSET=$(TEXT_OFFSET)
+CFLAGS_efi-stub.o := -DTEXT_OFFSET=$(TEXT_OFFSET) \
+ -I$(src)/../../../scripts/dtc/libfdt
CFLAGS_REMOVE_ftrace.o = -pg
CFLAGS_REMOVE_insn.o = -pg
@@ -29,6 +31,7 @@ arm64-obj-$(CONFIG_ARM_CPU_TOPOLOGY) += topology.o
arm64-obj-$(CONFIG_ARM64_CPU_SUSPEND) += sleep.o suspend.o
arm64-obj-$(CONFIG_JUMP_LABEL) += jump_label.o
arm64-obj-$(CONFIG_KGDB) += kgdb.o
+arm64-obj-$(CONFIG_EFI) += efi.o efi-stub.o efi-entry.o
obj-y += $(arm64-obj-y) vdso/
obj-m += $(arm64-obj-m)
diff --git a/arch/arm64/kernel/efi-entry.S b/arch/arm64/kernel/efi-entry.S
new file mode 100644
index 000000000000..66716c9b9e5f
--- /dev/null
+++ b/arch/arm64/kernel/efi-entry.S
@@ -0,0 +1,109 @@
+/*
+ * EFI entry point.
+ *
+ * Copyright (C) 2013, 2014 Red Hat, Inc.
+ * Author: Mark Salter <msalter@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#include <linux/linkage.h>
+#include <linux/init.h>
+
+#include <asm/assembler.h>
+
+#define EFI_LOAD_ERROR 0x8000000000000001
+
+ __INIT
+
+ /*
+ * We arrive here from the EFI boot manager with:
+ *
+ * * CPU in little-endian mode
+ * * MMU on with identity-mapped RAM
+ * * Icache and Dcache on
+ *
+ * We will most likely be running from some place other than where
+ * we want to be. The kernel image wants to be placed at TEXT_OFFSET
+ * from start of RAM.
+ */
+ENTRY(efi_stub_entry)
+ /*
+ * Create a stack frame to save FP/LR with extra space
+ * for image_addr variable passed to efi_entry().
+ */
+ stp x29, x30, [sp, #-32]!
+
+ /*
+ * Call efi_entry to do the real work.
+ * x0 and x1 are already set up by firmware. Current runtime
+ * address of image is calculated and passed via *image_addr.
+ *
+ * unsigned long efi_entry(void *handle,
+ * efi_system_table_t *sys_table,
+ * unsigned long *image_addr) ;
+ */
+ adrp x8, _text
+ add x8, x8, #:lo12:_text
+ add x2, sp, 16
+ str x8, [x2]
+ bl efi_entry
+ cmn x0, #1
+ b.eq efi_load_fail
+
+ /*
+ * efi_entry() will have relocated the kernel image if necessary
+ * and we return here with device tree address in x0 and the kernel
+ * entry point stored at *image_addr. Save those values in registers
+ * which are callee preserved.
+ */
+ mov x20, x0 // DTB address
+ ldr x0, [sp, #16] // relocated _text address
+ mov x21, x0
+
+ /*
+ * Flush dcache covering current runtime addresses
+ * of kernel text/data. Then flush all of icache.
+ */
+ adrp x1, _text
+ add x1, x1, #:lo12:_text
+ adrp x2, _edata
+ add x2, x2, #:lo12:_edata
+ sub x1, x2, x1
+
+ bl __flush_dcache_area
+ ic ialluis
+
+ /* Turn off Dcache and MMU */
+ mrs x0, CurrentEL
+ cmp x0, #PSR_MODE_EL2t
+ ccmp x0, #PSR_MODE_EL2h, #0x4, ne
+ b.ne 1f
+ mrs x0, sctlr_el2
+ bic x0, x0, #1 << 0 // clear SCTLR.M
+ bic x0, x0, #1 << 2 // clear SCTLR.C
+ msr sctlr_el2, x0
+ isb
+ b 2f
+1:
+ mrs x0, sctlr_el1
+ bic x0, x0, #1 << 0 // clear SCTLR.M
+ bic x0, x0, #1 << 2 // clear SCTLR.C
+ msr sctlr_el1, x0
+ isb
+2:
+ /* Jump to kernel entry point */
+ mov x0, x20
+ mov x1, xzr
+ mov x2, xzr
+ mov x3, xzr
+ br x21
+
+efi_load_fail:
+ mov x0, #EFI_LOAD_ERROR
+ ldp x29, x30, [sp], #32
+ ret
+
+ENDPROC(efi_stub_entry)
diff --git a/arch/arm64/kernel/efi-stub.c b/arch/arm64/kernel/efi-stub.c
new file mode 100644
index 000000000000..e786e6cdc400
--- /dev/null
+++ b/arch/arm64/kernel/efi-stub.c
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2013, 2014 Linaro Ltd; <roy.franz@linaro.org>
+ *
+ * This file implements the EFI boot stub for the arm64 kernel.
+ * Adapted from ARM version by Mark Salter <msalter@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#include <linux/efi.h>
+#include <linux/libfdt.h>
+#include <asm/sections.h>
+
+/*
+ * 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__)
+
+static void efi_char16_printk(efi_system_table_t *sys_table_arg,
+ efi_char16_t *str);
+
+static efi_status_t efi_open_volume(efi_system_table_t *sys_table,
+ void *__image, void **__fh);
+static efi_status_t efi_file_close(void *handle);
+
+static efi_status_t
+efi_file_read(void *handle, unsigned long *size, void *addr);
+
+static efi_status_t
+efi_file_size(efi_system_table_t *sys_table, void *__fh,
+ efi_char16_t *filename_16, void **handle, u64 *file_sz);
+
+/* Include shared EFI stub code */
+#include "../../../drivers/firmware/efi/efi-stub-helper.c"
+#include "../../../drivers/firmware/efi/fdt.c"
+#include "../../../drivers/firmware/efi/arm-stub.c"
+
+
+static efi_status_t handle_kernel_image(efi_system_table_t *sys_table,
+ unsigned long *image_addr,
+ unsigned long *image_size,
+ unsigned long *reserve_addr,
+ unsigned long *reserve_size,
+ unsigned long dram_base,
+ efi_loaded_image_t *image)
+{
+ efi_status_t status;
+ unsigned long kernel_size, kernel_memsize = 0;
+
+ /* Relocate the image, if required. */
+ kernel_size = _edata - _text;
+ if (*image_addr != (dram_base + TEXT_OFFSET)) {
+ kernel_memsize = kernel_size + (_end - _edata);
+ status = efi_relocate_kernel(sys_table, image_addr,
+ kernel_size, kernel_memsize,
+ dram_base + TEXT_OFFSET,
+ PAGE_SIZE);
+ if (status != EFI_SUCCESS) {
+ pr_efi_err(sys_table, "Failed to relocate kernel\n");
+ return status;
+ }
+ if (*image_addr != (dram_base + TEXT_OFFSET)) {
+ pr_efi_err(sys_table, "Failed to alloc kernel memory\n");
+ efi_free(sys_table, kernel_memsize, *image_addr);
+ return EFI_ERROR;
+ }
+ *image_size = kernel_memsize;
+ }
+
+
+ return EFI_SUCCESS;
+}
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
new file mode 100644
index 000000000000..14db1f6e8d7f
--- /dev/null
+++ b/arch/arm64/kernel/efi.c
@@ -0,0 +1,469 @@
+/*
+ * Extensible Firmware Interface
+ *
+ * Based on Extensible Firmware Interface Specification version 2.4
+ *
+ * Copyright (C) 2013, 2014 Linaro Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/efi.h>
+#include <linux/export.h>
+#include <linux/memblock.h>
+#include <linux/bootmem.h>
+#include <linux/of.h>
+#include <linux/of_fdt.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+
+#include <asm/cacheflush.h>
+#include <asm/efi.h>
+#include <asm/tlbflush.h>
+#include <asm/mmu_context.h>
+
+struct efi_memory_map memmap;
+
+static efi_runtime_services_t *runtime;
+
+static u64 efi_system_table;
+
+static int uefi_debug __initdata;
+static int __init uefi_debug_setup(char *str)
+{
+ uefi_debug = 1;
+
+ return 0;
+}
+early_param("uefi_debug", uefi_debug_setup);
+
+static int __init is_normal_ram(efi_memory_desc_t *md)
+{
+ if (md->attribute & EFI_MEMORY_WB)
+ return 1;
+ return 0;
+}
+
+static void __init efi_setup_idmap(void)
+{
+ struct memblock_region *r;
+ efi_memory_desc_t *md;
+ u64 paddr, npages, size;
+
+ for_each_memblock(memory, r)
+ create_id_mapping(r->base, r->size, 0);
+
+ /* map runtime io spaces */
+ for_each_efi_memory_desc(&memmap, md) {
+ if (!(md->attribute & EFI_MEMORY_RUNTIME) || is_normal_ram(md))
+ continue;
+ paddr = md->phys_addr;
+ npages = md->num_pages;
+ memrange_efi_to_native(&paddr, &npages);
+ size = npages << PAGE_SHIFT;
+ create_id_mapping(paddr, size, 1);
+ }
+}
+
+static int __init uefi_init(void)
+{
+ efi_char16_t *c16;
+ char vendor[100] = "unknown";
+ int i, retval;
+
+ efi.systab = early_memremap(efi_system_table,
+ sizeof(efi_system_table_t));
+ if (efi.systab == NULL) {
+ pr_warn("Unable to map EFI system table.\n");
+ return -ENOMEM;
+ }
+
+ set_bit(EFI_BOOT, &efi.flags);
+ set_bit(EFI_64BIT, &efi.flags);
+
+ /*
+ * Verify the EFI Table
+ */
+ if (efi.systab->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) {
+ pr_err("System table signature incorrect\n");
+ return -EINVAL;
+ }
+ if ((efi.systab->hdr.revision >> 16) < 2)
+ pr_warn("Warning: EFI system table version %d.%02d, expected 2.00 or greater\n",
+ efi.systab->hdr.revision >> 16,
+ efi.systab->hdr.revision & 0xffff);
+
+ /* Show what we know for posterity */
+ c16 = early_memremap(efi.systab->fw_vendor,
+ sizeof(vendor));
+ if (c16) {
+ for (i = 0; i < (int) sizeof(vendor) - 1 && *c16; ++i)
+ vendor[i] = c16[i];
+ vendor[i] = '\0';
+ }
+
+ pr_info("EFI v%u.%.02u by %s\n",
+ efi.systab->hdr.revision >> 16,
+ efi.systab->hdr.revision & 0xffff, vendor);
+
+ retval = efi_config_init(NULL);
+ if (retval == 0)
+ set_bit(EFI_CONFIG_TABLES, &efi.flags);
+
+ early_memunmap(c16, sizeof(vendor));
+ early_memunmap(efi.systab, sizeof(efi_system_table_t));
+
+ return retval;
+}
+
+static __initdata char memory_type_name[][32] = {
+ {"Reserved"},
+ {"Loader Code"},
+ {"Loader Data"},
+ {"Boot Code"},
+ {"Boot Data"},
+ {"Runtime Code"},
+ {"Runtime Data"},
+ {"Conventional Memory"},
+ {"Unusable Memory"},
+ {"ACPI Reclaim Memory"},
+ {"ACPI Memory NVS"},
+ {"Memory Mapped I/O"},
+ {"MMIO Port Space"},
+ {"PAL Code"},
+};
+
+/*
+ * Return true for RAM regions we want to permanently reserve.
+ */
+static __init int is_reserve_region(efi_memory_desc_t *md)
+{
+ if (!is_normal_ram(md))
+ return 0;
+
+ if (md->attribute & EFI_MEMORY_RUNTIME)
+ return 1;
+
+ if (md->type == EFI_ACPI_RECLAIM_MEMORY ||
+ md->type == EFI_RESERVED_TYPE)
+ return 1;
+
+ return 0;
+}
+
+static __init void reserve_regions(void)
+{
+ efi_memory_desc_t *md;
+ u64 paddr, npages, size;
+
+ if (uefi_debug)
+ pr_info("Processing EFI memory map:\n");
+
+ for_each_efi_memory_desc(&memmap, md) {
+ paddr = md->phys_addr;
+ npages = md->num_pages;
+
+ if (uefi_debug)
+ pr_info(" 0x%012llx-0x%012llx [%s]",
+ paddr, paddr + (npages << EFI_PAGE_SHIFT) - 1,
+ memory_type_name[md->type]);
+
+ memrange_efi_to_native(&paddr, &npages);
+ size = npages << PAGE_SHIFT;
+
+ if (is_normal_ram(md))
+ early_init_dt_add_memory_arch(paddr, size);
+
+ if (is_reserve_region(md) ||
+ md->type == EFI_BOOT_SERVICES_CODE ||
+ md->type == EFI_BOOT_SERVICES_DATA) {
+ memblock_reserve(paddr, size);
+ if (uefi_debug)
+ pr_cont("*");
+ }
+
+ if (uefi_debug)
+ pr_cont("\n");
+ }
+}
+
+
+static u64 __init free_one_region(u64 start, u64 end)
+{
+ u64 size = end - start;
+
+ if (uefi_debug)
+ pr_info(" EFI freeing: 0x%012llx-0x%012llx\n", start, end - 1);
+
+ free_bootmem_late(start, size);
+ return size;
+}
+
+static u64 __init free_region(u64 start, u64 end)
+{
+ u64 map_start, map_end, total = 0;
+
+ if (end <= start)
+ return total;
+
+ map_start = (u64)memmap.phys_map;
+ map_end = PAGE_ALIGN(map_start + (memmap.map_end - memmap.map));
+ map_start &= PAGE_MASK;
+
+ if (start < map_end && end > map_start) {
+ /* region overlaps UEFI memmap */
+ if (start < map_start)
+ total += free_one_region(start, map_start);
+
+ if (map_end < end)
+ total += free_one_region(map_end, end);
+ } else
+ total += free_one_region(start, end);
+
+ return total;
+}
+
+static void __init free_boot_services(void)
+{
+ u64 total_freed = 0;
+ u64 keep_end, free_start, free_end;
+ efi_memory_desc_t *md;
+
+ /*
+ * If kernel uses larger pages than UEFI, we have to be careful
+ * not to inadvertantly free memory we want to keep if there is
+ * overlap at the kernel page size alignment. We do not want to
+ * free is_reserve_region() memory nor the UEFI memmap itself.
+ *
+ * The memory map is sorted, so we keep track of the end of
+ * any previous region we want to keep, remember any region
+ * we want to free and defer freeing it until we encounter
+ * the next region we want to keep. This way, before freeing
+ * it, we can clip it as needed to avoid freeing memory we
+ * want to keep for UEFI.
+ */
+
+ keep_end = 0;
+ free_start = 0;
+
+ for_each_efi_memory_desc(&memmap, md) {
+ u64 paddr, npages, size;
+
+ if (is_reserve_region(md)) {
+ /*
+ * We don't want to free any memory from this region.
+ */
+ if (free_start) {
+ /* adjust free_end then free region */
+ if (free_end > md->phys_addr)
+ free_end -= PAGE_SIZE;
+ total_freed += free_region(free_start, free_end);
+ free_start = 0;
+ }
+ keep_end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT);
+ continue;
+ }
+
+ if (md->type != EFI_BOOT_SERVICES_CODE &&
+ md->type != EFI_BOOT_SERVICES_DATA) {
+ /* no need to free this region */
+ continue;
+ }
+
+ /*
+ * We want to free memory from this region.
+ */
+ paddr = md->phys_addr;
+ npages = md->num_pages;
+ memrange_efi_to_native(&paddr, &npages);
+ size = npages << PAGE_SHIFT;
+
+ if (free_start) {
+ if (paddr <= free_end)
+ free_end = paddr + size;
+ else {
+ total_freed += free_region(free_start, free_end);
+ free_start = paddr;
+ free_end = paddr + size;
+ }
+ } else {
+ free_start = paddr;
+ free_end = paddr + size;
+ }
+ if (free_start < keep_end) {
+ free_start += PAGE_SIZE;
+ if (free_start >= free_end)
+ free_start = 0;
+ }
+ }
+ if (free_start)
+ total_freed += free_region(free_start, free_end);
+
+ if (total_freed)
+ pr_info("Freed 0x%llx bytes of EFI boot services memory",
+ total_freed);
+}
+
+void __init efi_init(void)
+{
+ struct efi_fdt_params params;
+
+ /* Grab UEFI information placed in FDT by stub */
+ if (!efi_get_fdt_params(&params, uefi_debug))
+ return;
+
+ efi_system_table = params.system_table;
+
+ memblock_reserve(params.mmap & PAGE_MASK,
+ PAGE_ALIGN(params.mmap_size + (params.mmap & ~PAGE_MASK)));
+ memmap.phys_map = (void *)params.mmap;
+ memmap.map = early_memremap(params.mmap, params.mmap_size);
+ memmap.map_end = memmap.map + params.mmap_size;
+ memmap.desc_size = params.desc_size;
+ memmap.desc_version = params.desc_ver;
+
+ if (uefi_init() < 0)
+ return;
+
+ reserve_regions();
+}
+
+void __init efi_idmap_init(void)
+{
+ if (!efi_enabled(EFI_BOOT))
+ return;
+
+ /* boot time idmap_pg_dir is incomplete, so fill in missing parts */
+ efi_setup_idmap();
+}
+
+static int __init remap_region(efi_memory_desc_t *md, void **new)
+{
+ u64 paddr, vaddr, npages, size;
+
+ paddr = md->phys_addr;
+ npages = md->num_pages;
+ memrange_efi_to_native(&paddr, &npages);
+ size = npages << PAGE_SHIFT;
+
+ if (is_normal_ram(md))
+ vaddr = (__force u64)ioremap_cache(paddr, size);
+ else
+ vaddr = (__force u64)ioremap(paddr, size);
+
+ if (!vaddr) {
+ pr_err("Unable to remap 0x%llx pages @ %p\n",
+ npages, (void *)paddr);
+ return 0;
+ }
+
+ /* adjust for any rounding when EFI and system pagesize differs */
+ md->virt_addr = vaddr + (md->phys_addr - paddr);
+
+ if (uefi_debug)
+ pr_info(" EFI remap 0x%012llx => %p\n",
+ md->phys_addr, (void *)md->virt_addr);
+
+ memcpy(*new, md, memmap.desc_size);
+ *new += memmap.desc_size;
+
+ return 1;
+}
+
+/*
+ * Switch UEFI from an identity map to a kernel virtual map
+ */
+static int __init arm64_enter_virtual_mode(void)
+{
+ efi_memory_desc_t *md;
+ phys_addr_t virtmap_phys;
+ void *virtmap, *virt_md;
+ efi_status_t status;
+ u64 mapsize;
+ int count = 0;
+ unsigned long flags;
+
+ if (!efi_enabled(EFI_BOOT)) {
+ pr_info("EFI services will not be available.\n");
+ return -1;
+ }
+
+ pr_info("Remapping and enabling EFI services.\n");
+
+ /* replace early memmap mapping with permanent mapping */
+ mapsize = memmap.map_end - memmap.map;
+ early_memunmap(memmap.map, mapsize);
+ memmap.map = (__force void *)ioremap_cache((phys_addr_t)memmap.phys_map,
+ mapsize);
+ memmap.map_end = memmap.map + mapsize;
+
+ efi.memmap = &memmap;
+
+ /* Map the runtime regions */
+ virtmap = kmalloc(mapsize, GFP_KERNEL);
+ if (!virtmap) {
+ pr_err("Failed to allocate EFI virtual memmap\n");
+ return -1;
+ }
+ virtmap_phys = virt_to_phys(virtmap);
+ virt_md = virtmap;
+
+ for_each_efi_memory_desc(&memmap, md) {
+ if (!(md->attribute & EFI_MEMORY_RUNTIME))
+ continue;
+ if (remap_region(md, &virt_md))
+ ++count;
+ }
+
+ efi.systab = (__force void *)efi_lookup_mapped_addr(efi_system_table);
+ if (efi.systab)
+ set_bit(EFI_SYSTEM_TABLES, &efi.flags);
+
+ local_irq_save(flags);
+ cpu_switch_mm(idmap_pg_dir, &init_mm);
+
+ /* Call SetVirtualAddressMap with the physical address of the map */
+ runtime = efi.systab->runtime;
+ efi.set_virtual_address_map = runtime->set_virtual_address_map;
+
+ status = efi.set_virtual_address_map(count * memmap.desc_size,
+ memmap.desc_size,
+ memmap.desc_version,
+ (efi_memory_desc_t *)virtmap_phys);
+ cpu_set_reserved_ttbr0();
+ flush_tlb_all();
+ local_irq_restore(flags);
+
+ kfree(virtmap);
+
+ free_boot_services();
+
+ if (status != EFI_SUCCESS) {
+ pr_err("Failed to set EFI virtual address map! [%lx]\n",
+ status);
+ return -1;
+ }
+
+ /* Set up runtime services function pointers */
+ runtime = efi.systab->runtime;
+ efi.get_time = runtime->get_time;
+ efi.set_time = runtime->set_time;
+ efi.get_wakeup_time = runtime->get_wakeup_time;
+ efi.set_wakeup_time = runtime->set_wakeup_time;
+ efi.get_variable = runtime->get_variable;
+ efi.get_next_variable = runtime->get_next_variable;
+ efi.set_variable = runtime->set_variable;
+ efi.query_variable_info = runtime->query_variable_info;
+ efi.update_capsule = runtime->update_capsule;
+ efi.query_capsule_caps = runtime->query_capsule_caps;
+ efi.get_next_high_mono_count = runtime->get_next_high_mono_count;
+ efi.reset_system = runtime->reset_system;
+
+ set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
+
+ return 0;
+}
+early_initcall(arm64_enter_virtual_mode);
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
index f5e7c618b262..f1d3f693cac6 100644
--- a/arch/arm64/kernel/head.S
+++ b/arch/arm64/kernel/head.S
@@ -96,8 +96,18 @@
/*
* DO NOT MODIFY. Image header expected by Linux boot-loaders.
*/
+#ifdef CONFIG_EFI
+efi_head:
+ /*
+ * This add instruction has no meaningful effect except that
+ * its opcode forms the magic "MZ" signature required by UEFI.
+ */
+ add x13, x18, #0x16
+ b stext
+#else
b stext // branch to kernel start, magic
.long 0 // reserved
+#endif
.quad TEXT_OFFSET // Image load offset from start of RAM
.quad 0 // reserved
.quad 0 // reserved
@@ -108,7 +118,109 @@
.byte 0x52
.byte 0x4d
.byte 0x64
+#ifdef CONFIG_EFI
+ .long pe_header - efi_head // Offset to the PE header.
+#else
.word 0 // reserved
+#endif
+
+#ifdef CONFIG_EFI
+ .align 3
+pe_header:
+ .ascii "PE"
+ .short 0
+coff_header:
+ .short 0xaa64 // AArch64
+ .short 2 // nr_sections
+ .long 0 // TimeDateStamp
+ .long 0 // PointerToSymbolTable
+ .long 1 // NumberOfSymbols
+ .short section_table - optional_header // SizeOfOptionalHeader
+ .short 0x206 // Characteristics.
+ // IMAGE_FILE_DEBUG_STRIPPED |
+ // IMAGE_FILE_EXECUTABLE_IMAGE |
+ // IMAGE_FILE_LINE_NUMS_STRIPPED
+optional_header:
+ .short 0x20b // PE32+ format
+ .byte 0x02 // MajorLinkerVersion
+ .byte 0x14 // MinorLinkerVersion
+ .long _edata - stext // SizeOfCode
+ .long 0 // SizeOfInitializedData
+ .long 0 // SizeOfUninitializedData
+ .long efi_stub_entry - efi_head // AddressOfEntryPoint
+ .long stext - efi_head // BaseOfCode
+
+extra_header_fields:
+ .quad 0 // ImageBase
+ .long 0x20 // SectionAlignment
+ .long 0x8 // FileAlignment
+ .short 0 // MajorOperatingSystemVersion
+ .short 0 // MinorOperatingSystemVersion
+ .short 0 // MajorImageVersion
+ .short 0 // MinorImageVersion
+ .short 0 // MajorSubsystemVersion
+ .short 0 // MinorSubsystemVersion
+ .long 0 // Win32VersionValue
+
+ .long _edata - efi_head // SizeOfImage
+
+ // Everything before the kernel image is considered part of the header
+ .long stext - efi_head // SizeOfHeaders
+ .long 0 // CheckSum
+ .short 0xa // Subsystem (EFI application)
+ .short 0 // DllCharacteristics
+ .quad 0 // SizeOfStackReserve
+ .quad 0 // SizeOfStackCommit
+ .quad 0 // SizeOfHeapReserve
+ .quad 0 // SizeOfHeapCommit
+ .long 0 // LoaderFlags
+ .long 0x6 // NumberOfRvaAndSizes
+
+ .quad 0 // ExportTable
+ .quad 0 // ImportTable
+ .quad 0 // ResourceTable
+ .quad 0 // ExceptionTable
+ .quad 0 // CertificationTable
+ .quad 0 // BaseRelocationTable
+
+ // Section table
+section_table:
+
+ /*
+ * The EFI application loader requires a relocation section
+ * because EFI applications must be relocatable. This is a
+ * dummy section as far as we are concerned.
+ */
+ .ascii ".reloc"
+ .byte 0
+ .byte 0 // end of 0 padding of section name
+ .long 0
+ .long 0
+ .long 0 // SizeOfRawData
+ .long 0 // PointerToRawData
+ .long 0 // PointerToRelocations
+ .long 0 // PointerToLineNumbers
+ .short 0 // NumberOfRelocations
+ .short 0 // NumberOfLineNumbers
+ .long 0x42100040 // Characteristics (section flags)
+
+
+ .ascii ".text"
+ .byte 0
+ .byte 0
+ .byte 0 // end of 0 padding of section name
+ .long _edata - stext // VirtualSize
+ .long stext - efi_head // VirtualAddress
+ .long _edata - stext // SizeOfRawData
+ .long stext - efi_head // PointerToRawData
+
+ .long 0 // PointerToRelocations (0 for executables)
+ .long 0 // PointerToLineNumbers (0 for executables)
+ .short 0 // NumberOfRelocations (0 for executables)
+ .short 0 // NumberOfLineNumbers (0 for executables)
+ .long 0xe0500020 // Characteristics (section flags)
+ .align 5
+#endif
ENTRY(stext)
mov x21, x0 // x21=FDT
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 9bafffe12689..e87b5fd07b8c 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -41,6 +41,7 @@
#include <linux/memblock.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
+#include <linux/efi.h>
#include <asm/fixmap.h>
#include <asm/cputype.h>
@@ -55,6 +56,7 @@
#include <asm/traps.h>
#include <asm/memblock.h>
#include <asm/psci.h>
+#include <asm/efi.h>
unsigned int processor_id;
EXPORT_SYMBOL(processor_id);
@@ -417,11 +419,14 @@ void __init setup_arch(char **cmdline_p)
parse_early_param();
+ efi_init();
arm64_memblock_init();
paging_init();
request_standard_resources();
+ efi_idmap_init();
+
unflatten_device_tree();
psci_init();
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index f034563aeae5..ff0968042829 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -44,10 +44,15 @@
#define EFI_DEBUG 0
+static __initdata unsigned long palo_phys;
+
+static __initdata efi_config_table_type_t arch_tables[] = {
+ {PROCESSOR_ABSTRACTION_LAYER_OVERWRITE_GUID, "PALO", &palo_phys},
+ {NULL_GUID, NULL, 0},
+};
+
extern efi_status_t efi_call_phys (void *, ...);
-struct efi efi;
-EXPORT_SYMBOL(efi);
static efi_runtime_services_t *runtime;
static u64 mem_limit = ~0UL, max_addr = ~0UL, min_addr = 0UL;
@@ -423,9 +428,9 @@ static u8 __init palo_checksum(u8 *buffer, u32 length)
* Parse and handle PALO table which is published at:
* http://www.dig64.org/home/DIG64_PALO_R1_0.pdf
*/
-static void __init handle_palo(unsigned long palo_phys)
+static void __init handle_palo(unsigned long phys_addr)
{
- struct palo_table *palo = __va(palo_phys);
+ struct palo_table *palo = __va(phys_addr);
u8 checksum;
if (strncmp(palo->signature, PALO_SIG, sizeof(PALO_SIG) - 1)) {
@@ -467,12 +472,13 @@ void __init
efi_init (void)
{
void *efi_map_start, *efi_map_end;
- efi_config_table_t *config_tables;
efi_char16_t *c16;
u64 efi_desc_size;
char *cp, vendor[100] = "unknown";
int i;
- unsigned long palo_phys;
+
+ set_bit(EFI_BOOT, &efi.flags);
+ set_bit(EFI_64BIT, &efi.flags);
/*
* It's too early to be able to use the standard kernel command line
@@ -514,8 +520,6 @@ efi_init (void)
efi.systab->hdr.revision >> 16,
efi.systab->hdr.revision & 0xffff);
- config_tables = __va(efi.systab->tables);
-
/* Show what we know for posterity */
c16 = __va(efi.systab->fw_vendor);
if (c16) {
@@ -528,43 +532,12 @@ efi_init (void)
efi.systab->hdr.revision >> 16,
efi.systab->hdr.revision & 0xffff, vendor);
- efi.mps = EFI_INVALID_TABLE_ADDR;
- efi.acpi = EFI_INVALID_TABLE_ADDR;
- efi.acpi20 = EFI_INVALID_TABLE_ADDR;
- efi.smbios = EFI_INVALID_TABLE_ADDR;
- efi.sal_systab = EFI_INVALID_TABLE_ADDR;
- efi.boot_info = EFI_INVALID_TABLE_ADDR;
- efi.hcdp = EFI_INVALID_TABLE_ADDR;
- efi.uga = EFI_INVALID_TABLE_ADDR;
+ set_bit(EFI_SYSTEM_TABLES, &efi.flags);
palo_phys = EFI_INVALID_TABLE_ADDR;
- for (i = 0; i < (int) efi.systab->nr_tables; i++) {
- if (efi_guidcmp(config_tables[i].guid, MPS_TABLE_GUID) == 0) {
- efi.mps = config_tables[i].table;
- printk(" MPS=0x%lx", config_tables[i].table);
- } else if (efi_guidcmp(config_tables[i].guid, ACPI_20_TABLE_GUID) == 0) {
- efi.acpi20 = config_tables[i].table;
- printk(" ACPI 2.0=0x%lx", config_tables[i].table);
- } else if (efi_guidcmp(config_tables[i].guid, ACPI_TABLE_GUID) == 0) {
- efi.acpi = config_tables[i].table;
- printk(" ACPI=0x%lx", config_tables[i].table);
- } else if (efi_guidcmp(config_tables[i].guid, SMBIOS_TABLE_GUID) == 0) {
- efi.smbios = config_tables[i].table;
- printk(" SMBIOS=0x%lx", config_tables[i].table);
- } else if (efi_guidcmp(config_tables[i].guid, SAL_SYSTEM_TABLE_GUID) == 0) {
- efi.sal_systab = config_tables[i].table;
- printk(" SALsystab=0x%lx", config_tables[i].table);
- } else if (efi_guidcmp(config_tables[i].guid, HCDP_TABLE_GUID) == 0) {
- efi.hcdp = config_tables[i].table;
- printk(" HCDP=0x%lx", config_tables[i].table);
- } else if (efi_guidcmp(config_tables[i].guid,
- PROCESSOR_ABSTRACTION_LAYER_OVERWRITE_GUID) == 0) {
- palo_phys = config_tables[i].table;
- printk(" PALO=0x%lx", config_tables[i].table);
- }
- }
- printk("\n");
+ if (efi_config_init(arch_tables) != 0)
+ return;
if (palo_phys != EFI_INVALID_TABLE_ADDR)
handle_palo(palo_phys);
@@ -689,6 +662,8 @@ efi_enter_virtual_mode (void)
return;
}
+ set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
+
/*
* Now that EFI is in virtual mode, we call the EFI functions more
* efficiently:
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 1308beed7abe..17177e80d466 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -878,14 +878,15 @@ struct boot_params *make_boot_params(void *handle, efi_system_table_t *_table)
struct efi_info *efi;
efi_loaded_image_t *image;
void *options;
- u32 load_options_size;
efi_guid_t proto = LOADED_IMAGE_PROTOCOL_GUID;
int options_size = 0;
efi_status_t status;
- unsigned long cmdline;
+ char *cmdline_ptr;
u16 *s2;
u8 *s1;
int i;
+ unsigned long ramdisk_addr;
+ unsigned long ramdisk_size;
sys_table = _table;
@@ -896,13 +897,14 @@ struct boot_params *make_boot_params(void *handle, efi_system_table_t *_table)
status = efi_call_phys3(sys_table->boottime->handle_protocol,
handle, &proto, (void *)&image);
if (status != EFI_SUCCESS) {
- efi_printk("Failed to get handle for LOADED_IMAGE_PROTOCOL\n");
+ efi_printk(sys_table, "Failed to get handle for LOADED_IMAGE_PROTOCOL\n");
return NULL;
}
- status = low_alloc(0x4000, 1, (unsigned long *)&boot_params);
+ status = efi_low_alloc(sys_table, 0x4000, 1,
+ (unsigned long *)&boot_params);
if (status != EFI_SUCCESS) {
- efi_printk("Failed to alloc lowmem for boot params\n");
+ efi_printk(sys_table, "Failed to alloc lowmem for boot params\n");
return NULL;
}
@@ -927,40 +929,10 @@ struct boot_params *make_boot_params(void *handle, efi_system_table_t *_table)
hdr->type_of_loader = 0x21;
/* Convert unicode cmdline to ascii */
- options = image->load_options;
- load_options_size = image->load_options_size / 2; /* ASCII */
- cmdline = 0;
- s2 = (u16 *)options;
-
- if (s2) {
- while (*s2 && *s2 != '\n' && options_size < load_options_size) {
- s2++;
- options_size++;
- }
-
- if (options_size) {
- if (options_size > hdr->cmdline_size)
- options_size = hdr->cmdline_size;
-
- options_size++; /* NUL termination */
-
- status = low_alloc(options_size, 1, &cmdline);
- if (status != EFI_SUCCESS) {
- efi_printk("Failed to alloc mem for cmdline\n");
- goto fail;
- }
-
- s1 = (u8 *)(unsigned long)cmdline;
- s2 = (u16 *)options;
-
- for (i = 0; i < options_size - 1; i++)
- *s1++ = *s2++;
-
- *s1 = '\0';
- }
- }
-
- hdr->cmd_line_ptr = cmdline;
+ cmdline_ptr = efi_convert_cmdline(sys_table, image, &options_size);
+ if (!cmdline_ptr)
+ goto fail;
+ hdr->cmd_line_ptr = (unsigned long)cmdline_ptr;
hdr->ramdisk_image = 0;
hdr->ramdisk_size = 0;
@@ -970,16 +942,20 @@ struct boot_params *make_boot_params(void *handle, efi_system_table_t *_table)
memset(sdt, 0, sizeof(*sdt));
- status = handle_ramdisks(image, hdr);
+ status = handle_cmdline_files(sys_table, image,
+ (char *)(unsigned long)hdr->cmd_line_ptr,
+ "initrd=", hdr->initrd_addr_max,
+ &ramdisk_addr, &ramdisk_size);
if (status != EFI_SUCCESS)
goto fail2;
+ hdr->ramdisk_image = ramdisk_addr;
+ hdr->ramdisk_size = ramdisk_size;
return boot_params;
fail2:
- if (options_size)
- low_free(options_size, hdr->cmd_line_ptr);
+ efi_free(sys_table, options_size, hdr->cmd_line_ptr);
fail:
- low_free(0x4000, (unsigned long)boot_params);
+ efi_free(sys_table, 0x4000, (unsigned long)boot_params);
return NULL;
}
@@ -1002,7 +978,7 @@ static efi_status_t exit_boot(struct boot_params *boot_params,
again:
size += sizeof(*mem_map) * 2;
_size = size;
- status = low_alloc(size, 1, (unsigned long *)&mem_map);
+ status = efi_low_alloc(sys_table, size, 1, (unsigned long *)&mem_map);
if (status != EFI_SUCCESS)
return status;
@@ -1010,7 +986,7 @@ get_map:
status = efi_call_phys5(sys_table->boottime->get_memory_map, &size,
mem_map, &key, &desc_size, &desc_version);
if (status == EFI_BUFFER_TOO_SMALL) {
- low_free(_size, (unsigned long)mem_map);
+ efi_free(sys_table, _size, (unsigned long)mem_map);
goto again;
}
@@ -1112,44 +1088,10 @@ get_map:
return EFI_SUCCESS;
free_mem_map:
- low_free(_size, (unsigned long)mem_map);
+ efi_free(sys_table, _size, (unsigned long)mem_map);
return status;
}
-static efi_status_t relocate_kernel(struct setup_header *hdr)
-{
- unsigned long start, nr_pages;
- efi_status_t status;
-
- /*
- * The EFI firmware loader could have placed the kernel image
- * anywhere in memory, but the kernel has various restrictions
- * on the max physical address it can run at. Attempt to move
- * the kernel to boot_params.pref_address, or as low as
- * possible.
- */
- start = hdr->pref_address;
- nr_pages = round_up(hdr->init_size, EFI_PAGE_SIZE) / EFI_PAGE_SIZE;
-
- status = efi_call_phys4(sys_table->boottime->allocate_pages,
- EFI_ALLOCATE_ADDRESS, EFI_LOADER_DATA,
- nr_pages, &start);
- if (status != EFI_SUCCESS) {
- status = low_alloc(hdr->init_size, hdr->kernel_alignment,
- &start);
- if (status != EFI_SUCCESS)
- efi_printk("Failed to alloc mem for kernel\n");
- }
-
- if (status == EFI_SUCCESS)
- memcpy((void *)start, (void *)(unsigned long)hdr->code32_start,
- hdr->init_size);
-
- hdr->pref_address = hdr->code32_start;
- hdr->code32_start = (__u32)start;
-
- return status;
-}
/*
* On success we return a pointer to a boot_params structure, and NULL
@@ -1178,14 +1120,15 @@ struct boot_params *efi_main(void *handle, efi_system_table_t *_table,
EFI_LOADER_DATA, sizeof(*gdt),
(void **)&gdt);
if (status != EFI_SUCCESS) {
- efi_printk("Failed to alloc mem for gdt structure\n");
+ efi_printk(sys_table, "Failed to alloc mem for gdt structure\n");
goto fail;
}
gdt->size = 0x800;
- status = low_alloc(gdt->size, 8, (unsigned long *)&gdt->address);
+ status = efi_low_alloc(sys_table, gdt->size, 8,
+ (unsigned long *)&gdt->address);
if (status != EFI_SUCCESS) {
- efi_printk("Failed to alloc mem for gdt\n");
+ efi_printk(sys_table, "Failed to alloc mem for gdt\n");
goto fail;
}
@@ -1193,7 +1136,7 @@ struct boot_params *efi_main(void *handle, efi_system_table_t *_table,
EFI_LOADER_DATA, sizeof(*idt),
(void **)&idt);
if (status != EFI_SUCCESS) {
- efi_printk("Failed to alloc mem for idt structure\n");
+ efi_printk(sys_table, "Failed to alloc mem for idt structure\n");
goto fail;
}
@@ -1205,10 +1148,16 @@ struct boot_params *efi_main(void *handle, efi_system_table_t *_table,
* address, relocate it.
*/
if (hdr->pref_address != hdr->code32_start) {
- status = relocate_kernel(hdr);
-
+ unsigned long bzimage_addr = hdr->code32_start;
+ status = efi_relocate_kernel(sys_table, &bzimage_addr,
+ hdr->init_size, hdr->init_size,
+ hdr->pref_address,
+ hdr->kernel_alignment);
if (status != EFI_SUCCESS)
goto fail;
+
+ hdr->pref_address = hdr->code32_start;
+ hdr->code32_start = bzimage_addr;
}
status = exit_boot(boot_params, handle);
diff --git a/arch/x86/boot/compressed/eboot.h b/arch/x86/boot/compressed/eboot.h
index e5b0a8f91c5f..cc78e2da7af9 100644
--- a/arch/x86/boot/compressed/eboot.h
+++ b/arch/x86/boot/compressed/eboot.h
@@ -10,8 +10,6 @@
#define SEG_GRANULARITY_4KB (1 << 0)
#define DESC_TYPE_CODE_DATA (1 << 0)
-
-#define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
#define EFI_READ_CHUNK_SIZE (1024 * 1024)
#define EFI_CONSOLE_OUT_DEVICE_GUID \
@@ -40,6 +38,24 @@ struct efi_graphics_output_mode_info {
u32 pixels_per_scan_line;
} __packed;
+struct efi_graphics_output_protocol_mode_32 {
+ u32 max_mode;
+ u32 mode;
+ u32 info;
+ u32 size_of_info;
+ u64 frame_buffer_base;
+ u32 frame_buffer_size;
+} __packed;
+
+struct efi_graphics_output_protocol_mode_64 {
+ u32 max_mode;
+ u32 mode;
+ u64 info;
+ u64 size_of_info;
+ u64 frame_buffer_base;
+ u64 frame_buffer_size;
+} __packed;
+
struct efi_graphics_output_protocol_mode {
u32 max_mode;
u32 mode;
@@ -49,6 +65,20 @@ struct efi_graphics_output_protocol_mode {
unsigned long frame_buffer_size;
} __packed;
+struct efi_graphics_output_protocol_32 {
+ u32 query_mode;
+ u32 set_mode;
+ u32 blt;
+ u32 mode;
+};
+
+struct efi_graphics_output_protocol_64 {
+ u64 query_mode;
+ u64 set_mode;
+ u64 blt;
+ u64 mode;
+};
+
struct efi_graphics_output_protocol {
void *query_mode;
unsigned long set_mode;
@@ -56,16 +86,22 @@ struct efi_graphics_output_protocol {
struct efi_graphics_output_protocol_mode *mode;
};
+struct efi_uga_draw_protocol_32 {
+ u32 get_mode;
+ u32 set_mode;
+ u32 blt;
+};
+
+struct efi_uga_draw_protocol_64 {
+ u64 get_mode;
+ u64 set_mode;
+ u64 blt;
+};
+
struct efi_uga_draw_protocol {
void *get_mode;
void *set_mode;
void *blt;
};
-struct efi_simple_text_output_protocol {
- void *reset;
- void *output_string;
- void *test_string;
-};
-
#endif /* BOOT_COMPRESSED_EBOOT_H */
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 60c89f30c727..7a76dc284166 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -94,7 +94,7 @@ extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size,
#endif /* CONFIG_X86_32 */
extern int add_efi_memmap;
-extern unsigned long x86_efi_facility;
+extern struct efi_scratch efi_scratch;
extern void efi_set_executable(efi_memory_desc_t *md, bool executable);
extern int efi_memblock_x86_reserve_range(void);
extern void efi_call_phys_prelog(void);
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 91964c663f0d..a3627ade4b15 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -908,11 +908,11 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_EFI
if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
"EL32", 4)) {
- set_bit(EFI_BOOT, &x86_efi_facility);
+ set_bit(EFI_BOOT, &efi.flags);
} else if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
"EL64", 4)) {
- set_bit(EFI_BOOT, &x86_efi_facility);
- set_bit(EFI_64BIT, &x86_efi_facility);
+ set_bit(EFI_BOOT, &efi.flags);
+ set_bit(EFI_64BIT, &efi.flags);
}
if (efi_enabled(EFI_BOOT))
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 6033be9ff81a..816e940b3998 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -60,34 +60,19 @@
static efi_char16_t efi_dummy_name[6] = { 'D', 'U', 'M', 'M', 'Y', 0 };
-struct efi __read_mostly efi = {
- .mps = EFI_INVALID_TABLE_ADDR,
- .acpi = EFI_INVALID_TABLE_ADDR,
- .acpi20 = EFI_INVALID_TABLE_ADDR,
- .smbios = EFI_INVALID_TABLE_ADDR,
- .sal_systab = EFI_INVALID_TABLE_ADDR,
- .boot_info = EFI_INVALID_TABLE_ADDR,
- .hcdp = EFI_INVALID_TABLE_ADDR,
- .uga = EFI_INVALID_TABLE_ADDR,
- .uv_systab = EFI_INVALID_TABLE_ADDR,
-};
-EXPORT_SYMBOL(efi);
-
struct efi_memory_map memmap;
static struct efi efi_phys __initdata;
static efi_system_table_t efi_systab __initdata;
-unsigned long x86_efi_facility;
+static __initdata efi_config_table_type_t arch_tables[] = {
+#ifdef CONFIG_X86_UV
+ {UV_SYSTEM_TABLE_GUID, "UVsystab", &efi.uv_systab},
+#endif
+ {NULL_GUID, NULL, 0},
+};
-/*
- * Returns 1 if 'facility' is enabled, 0 otherwise.
- */
-int efi_enabled(int facility)
-{
- return test_bit(facility, &x86_efi_facility) != 0;
-}
-EXPORT_SYMBOL(efi_enabled);
+u64 efi_setup; /* efi setup_data physical address */
static bool __initdata disable_runtime = false;
static int __init setup_noefi(char *arg)
@@ -397,6 +382,8 @@ int __init efi_memblock_x86_reserve_range(void)
memblock_reserve(pmap, memmap.nr_map * memmap.desc_size);
+ efi.memmap = &memmap;
+
return 0;
}
@@ -454,7 +441,7 @@ void __init efi_reserve_boot_services(void)
void __init efi_unmap_memmap(void)
{
- clear_bit(EFI_MEMMAP, &x86_efi_facility);
+ clear_bit(EFI_MEMMAP, &efi.flags);
if (memmap.map) {
early_iounmap(memmap.map, memmap.nr_map * memmap.desc_size);
memmap.map = NULL;
@@ -576,80 +563,6 @@ static int __init efi_systab_init(void *phys)
return 0;
}
-static int __init efi_config_init(u64 tables, int nr_tables)
-{
- void *config_tables, *tablep;
- int i, sz;
-
- if (efi_enabled(EFI_64BIT))
- sz = sizeof(efi_config_table_64_t);
- else
- sz = sizeof(efi_config_table_32_t);
-
- /*
- * Let's see what config tables the firmware passed to us.
- */
- config_tables = early_ioremap(tables, nr_tables * sz);
- if (config_tables == NULL) {
- pr_err("Could not map Configuration table!\n");
- return -ENOMEM;
- }
-
- tablep = config_tables;
- pr_info("");
- for (i = 0; i < efi.systab->nr_tables; i++) {
- efi_guid_t guid;
- unsigned long table;
-
- if (efi_enabled(EFI_64BIT)) {
- u64 table64;
- guid = ((efi_config_table_64_t *)tablep)->guid;
- table64 = ((efi_config_table_64_t *)tablep)->table;
- table = table64;
-#ifdef CONFIG_X86_32
- if (table64 >> 32) {
- pr_cont("\n");
- pr_err("Table located above 4GB, disabling EFI.\n");
- early_iounmap(config_tables,
- efi.systab->nr_tables * sz);
- return -EINVAL;
- }
-#endif
- } else {
- guid = ((efi_config_table_32_t *)tablep)->guid;
- table = ((efi_config_table_32_t *)tablep)->table;
- }
- if (!efi_guidcmp(guid, MPS_TABLE_GUID)) {
- efi.mps = table;
- pr_cont(" MPS=0x%lx ", table);
- } else if (!efi_guidcmp(guid, ACPI_20_TABLE_GUID)) {
- efi.acpi20 = table;
- pr_cont(" ACPI 2.0=0x%lx ", table);
- } else if (!efi_guidcmp(guid, ACPI_TABLE_GUID)) {
- efi.acpi = table;
- pr_cont(" ACPI=0x%lx ", table);
- } else if (!efi_guidcmp(guid, SMBIOS_TABLE_GUID)) {
- efi.smbios = table;
- pr_cont(" SMBIOS=0x%lx ", table);
-#ifdef CONFIG_X86_UV
- } else if (!efi_guidcmp(guid, UV_SYSTEM_TABLE_GUID)) {
- efi.uv_systab = table;
- pr_cont(" UVsystab=0x%lx ", table);
-#endif
- } else if (!efi_guidcmp(guid, HCDP_TABLE_GUID)) {
- efi.hcdp = table;
- pr_cont(" HCDP=0x%lx ", table);
- } else if (!efi_guidcmp(guid, UGA_IO_PROTOCOL_GUID)) {
- efi.uga = table;
- pr_cont(" UGA=0x%lx ", table);
- }
- tablep += sz;
- }
- pr_cont("\n");
- early_iounmap(config_tables, efi.systab->nr_tables * sz);
- return 0;
-}
-
static int __init efi_runtime_init(void)
{
efi_runtime_services_t *runtime;
@@ -725,7 +638,11 @@ void __init efi_init(void)
if (efi_systab_init(efi_phys.systab))
return;
- set_bit(EFI_SYSTEM_TABLES, &x86_efi_facility);
+ set_bit(EFI_SYSTEM_TABLES, &efi.flags);
+
+ efi.config_table = (unsigned long)efi.systab->tables;
+ efi.fw_vendor = (unsigned long)efi.systab->fw_vendor;
+ efi.runtime = (unsigned long)efi.systab->runtime;
/*
* Show what we know for posterity
@@ -743,10 +660,10 @@ void __init efi_init(void)
efi.systab->hdr.revision >> 16,
efi.systab->hdr.revision & 0xffff, vendor);
- if (efi_config_init(efi.systab->tables, efi.systab->nr_tables))
+ if (efi_config_init(arch_tables))
return;
- set_bit(EFI_CONFIG_TABLES, &x86_efi_facility);
+ set_bit(EFI_CONFIG_TABLES, &efi.flags);
/*
* Note: We currently don't support runtime services on an EFI
@@ -758,13 +675,13 @@ void __init efi_init(void)
else {
if (disable_runtime || efi_runtime_init())
return;
- set_bit(EFI_RUNTIME_SERVICES, &x86_efi_facility);
+ set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
}
if (efi_memmap_init())
return;
- set_bit(EFI_MEMMAP, &x86_efi_facility);
+ set_bit(EFI_MEMMAP, &efi.flags);
#if EFI_DEBUG
print_efi_memmap();
@@ -807,34 +724,6 @@ static void __init runtime_code_page_mkexec(void)
}
}
-/*
- * We can't ioremap data in EFI boot services RAM, because we've already mapped
- * it as RAM. So, look it up in the existing EFI memory map instead. Only
- * callable after efi_enter_virtual_mode and before efi_free_boot_services.
- */
-void __iomem *efi_lookup_mapped_addr(u64 phys_addr)
-{
- void *p;
- if (WARN_ON(!memmap.map))
- return NULL;
- for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
- efi_memory_desc_t *md = p;
- u64 size = md->num_pages << EFI_PAGE_SHIFT;
- u64 end = md->phys_addr + size;
- if (!(md->attribute & EFI_MEMORY_RUNTIME) &&
- md->type != EFI_BOOT_SERVICES_CODE &&
- md->type != EFI_BOOT_SERVICES_DATA)
- continue;
- if (!md->virt_addr)
- continue;
- if (phys_addr >= md->phys_addr && phys_addr < end) {
- phys_addr += md->virt_addr - md->phys_addr;
- return (__force void __iomem *)(unsigned long)phys_addr;
- }
- }
- return NULL;
-}
-
void efi_memory_uc(u64 addr, unsigned long size)
{
unsigned long page_shift = 1UL << EFI_PAGE_SHIFT;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-28 00:27:05 +0000