riscv/kernel/efi.c

1 // SPDX-License-Identifier: GPL-2.0-only
4  * Adapted from arch/arm64/kernel/efi.c
7 #include <linux/efi.h>
10 #include <asm/efi.h>
12 #include <asm/pgtable-bits.h>
21 	u64 attr = md->attribute;  in efimem_to_pgprot_map()
22 	u32 type = md->type;  in efimem_to_pgprot_map()
27 	/* R-- */  in efimem_to_pgprot_map()
32 	/* R-X */  in efimem_to_pgprot_map()
36 	/* RW- */  in efimem_to_pgprot_map()
52 	/* RISC-V maps one page at a time */  in efi_create_mapping()
53 	for (i = 0; i < md->num_pages; i++)  in efi_create_mapping()
54 		create_pgd_mapping(mm->pgd, md->virt_addr + i * PAGE_SIZE,  in efi_create_mapping()
55 				   md->phys_addr + i * PAGE_SIZE,  in efi_create_mapping()
66 	if (md->attribute & EFI_MEMORY_RO) {  in set_permissions()
71 	if (md->attribute & EFI_MEMORY_XP) {  in set_permissions()
84 	BUG_ON(md->type != EFI_RUNTIME_SERVICES_CODE &&  in efi_set_mapping_permissions()
85 	       md->type != EFI_RUNTIME_SERVICES_DATA);  in efi_set_mapping_permissions()
94 	return apply_to_page_range(mm, md->virt_addr,  in efi_set_mapping_permissions()
95 				   md->num_pages << EFI_PAGE_SHIFT,  in efi_set_mapping_permissions()