diff options
Diffstat (limited to 'arch/x86/boot/compressed/misc.h')
| -rw-r--r-- | arch/x86/boot/compressed/misc.h | 158 |
1 files changed, 140 insertions, 18 deletions
diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h index 726e264410ff..fd855e32c9b9 100644 --- a/arch/x86/boot/compressed/misc.h +++ b/arch/x86/boot/compressed/misc.h @@ -12,23 +12,40 @@ #undef CONFIG_PARAVIRT_XXL #undef CONFIG_PARAVIRT_SPINLOCKS #undef CONFIG_KASAN +#undef CONFIG_KASAN_GENERIC + +#define __NO_FORTIFY /* cpu_feature_enabled() cannot be used this early */ #define USE_EARLY_PGTABLE_L5 +/* + * Boot stub deals with identity mappings, physical and virtual addresses are + * the same, so override these defines. + * + * <asm/page.h> will not define them if they are already defined. + */ +#define __pa(x) ((unsigned long)(x)) +#define __va(x) ((void *)((unsigned long)(x))) + #include <linux/linkage.h> #include <linux/screen_info.h> #include <linux/elf.h> -#include <linux/io.h> #include <asm/page.h> #include <asm/boot.h> #include <asm/bootparam.h> +#include <asm/desc_defs.h> + +#include "tdx.h" #define BOOT_CTYPE_H #include <linux/acpi.h> #define BOOT_BOOT_H #include "../ctype.h" +#include "../io.h" + +#include "efi.h" #ifdef CONFIG_X86_64 #define memptr long @@ -36,14 +53,21 @@ #define memptr unsigned #endif +/* boot/compressed/vmlinux start and end markers */ +extern char _head[], _end[]; + /* misc.c */ extern memptr free_mem_ptr; extern memptr free_mem_end_ptr; -extern struct boot_params *boot_params; +extern int spurious_nmi_count; +void *malloc(int size); +void free(void *where); void __putstr(const char *s); void __puthex(unsigned long value); +void __putdec(unsigned long value); #define error_putstr(__x) __putstr(__x) #define error_puthex(__x) __puthex(__x) +#define error_putdec(__x) __putdec(__x) #ifdef CONFIG_X86_VERBOSE_BOOTUP @@ -70,19 +94,17 @@ int cmdline_find_option(const char *option, char *buffer, int bufsize); int cmdline_find_option_bool(const char *option); struct mem_vector { - unsigned long long start; - unsigned long long size; + u64 start; + u64 size; }; -#if CONFIG_RANDOMIZE_BASE +#ifdef CONFIG_RANDOMIZE_BASE /* kaslr.c */ void choose_random_location(unsigned long input, unsigned long input_size, unsigned long *output, unsigned long output_size, unsigned long *virt_addr); -/* cpuflags.c */ -bool has_cpuflag(int flag); #else static inline void choose_random_location(unsigned long input, unsigned long input_size, @@ -93,18 +115,14 @@ static inline void choose_random_location(unsigned long input, } #endif +/* cpuflags.c */ +bool has_cpuflag(int flag); + #ifdef CONFIG_X86_64 -void initialize_identity_maps(void); -void add_identity_map(unsigned long start, unsigned long size); -void finalize_identity_maps(void); +extern int set_page_decrypted(unsigned long address); +extern int set_page_encrypted(unsigned long address); +extern int set_page_non_present(unsigned long address); extern unsigned char _pgtable[]; -#else -static inline void initialize_identity_maps(void) -{ } -static inline void add_identity_map(unsigned long start, unsigned long size) -{ } -static inline void finalize_identity_maps(void) -{ } #endif #ifdef CONFIG_EARLY_PRINTK @@ -117,7 +135,33 @@ static inline void console_init(void) { } #endif -void set_sev_encryption_mask(void); +#ifdef CONFIG_AMD_MEM_ENCRYPT +struct es_em_ctxt; +struct insn; + +void sev_enable(struct boot_params *bp); +void snp_check_features(void); +void sev_es_shutdown_ghcb(void); +extern bool sev_es_check_ghcb_fault(unsigned long address); +void snp_set_page_private(unsigned long paddr); +void snp_set_page_shared(unsigned long paddr); +void sev_prep_identity_maps(unsigned long top_level_pgt); + +enum es_result vc_decode_insn(struct es_em_ctxt *ctxt); +bool insn_has_rep_prefix(struct insn *insn); +void sev_insn_decode_init(void); +bool early_setup_ghcb(void); +#else +static inline void snp_check_features(void) { } +static inline void sev_es_shutdown_ghcb(void) { } +static inline bool sev_es_check_ghcb_fault(unsigned long address) +{ + return false; +} +static inline void snp_set_page_private(unsigned long paddr) { } +static inline void snp_set_page_shared(unsigned long paddr) { } +static inline void sev_prep_identity_maps(unsigned long top_level_pgt) { } +#endif /* acpi.c */ #ifdef CONFIG_ACPI @@ -133,4 +177,82 @@ int count_immovable_mem_regions(void); static inline int count_immovable_mem_regions(void) { return 0; } #endif +/* ident_map_64.c */ +extern unsigned int __pgtable_l5_enabled, pgdir_shift, ptrs_per_p4d; +extern void kernel_add_identity_map(unsigned long start, unsigned long end); + +/* Used by PAGE_KERN* macros: */ +extern pteval_t __default_kernel_pte_mask; + +/* idt_64.c */ +extern gate_desc boot_idt[BOOT_IDT_ENTRIES]; +extern struct desc_ptr boot_idt_desc; + +#ifdef CONFIG_X86_64 +void cleanup_exception_handling(void); +#else +static inline void cleanup_exception_handling(void) { } +#endif + +/* IDT Entry Points */ +void boot_page_fault(void); +void boot_nmi_trap(void); +void boot_stage1_vc(void); +void boot_stage2_vc(void); + +unsigned long sev_verify_cbit(unsigned long cr3); + +enum efi_type { + EFI_TYPE_64, + EFI_TYPE_32, + EFI_TYPE_NONE, +}; + +#ifdef CONFIG_EFI +/* helpers for early EFI config table access */ +enum efi_type efi_get_type(struct boot_params *bp); +unsigned long efi_get_system_table(struct boot_params *bp); +int efi_get_conf_table(struct boot_params *bp, unsigned long *cfg_tbl_pa, + unsigned int *cfg_tbl_len); +unsigned long efi_find_vendor_table(struct boot_params *bp, + unsigned long cfg_tbl_pa, + unsigned int cfg_tbl_len, + efi_guid_t guid); +#else +static inline enum efi_type efi_get_type(struct boot_params *bp) +{ + return EFI_TYPE_NONE; +} + +static inline unsigned long efi_get_system_table(struct boot_params *bp) +{ + return 0; +} + +static inline int efi_get_conf_table(struct boot_params *bp, + unsigned long *cfg_tbl_pa, + unsigned int *cfg_tbl_len) +{ + return -ENOENT; +} + +static inline unsigned long efi_find_vendor_table(struct boot_params *bp, + unsigned long cfg_tbl_pa, + unsigned int cfg_tbl_len, + efi_guid_t guid) +{ + return 0; +} +#endif /* CONFIG_EFI */ + +#ifdef CONFIG_UNACCEPTED_MEMORY +bool init_unaccepted_memory(void); +#else +static inline bool init_unaccepted_memory(void) { return false; } +#endif + +/* Defined in EFI stub */ +extern struct efi_unaccepted_memory *unaccepted_table; +void accept_memory(phys_addr_t start, unsigned long size); + #endif /* BOOT_COMPRESSED_MISC_H */ |