diff options
Diffstat (limited to 'arch/x86/include/asm/realmode.h')
| -rw-r--r-- | arch/x86/include/asm/realmode.h | 48 |
1 files changed, 42 insertions, 6 deletions
diff --git a/arch/x86/include/asm/realmode.h b/arch/x86/include/asm/realmode.h index 9c6b890d5e7a..e406a1e92c63 100644 --- a/arch/x86/include/asm/realmode.h +++ b/arch/x86/include/asm/realmode.h @@ -1,18 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ARCH_X86_REALMODE_H #define _ARCH_X86_REALMODE_H +/* + * Flag bit definitions for use with the flags field of the trampoline header + * in the CONFIG_X86_64 variant. + */ +#define TH_FLAGS_SME_ACTIVE_BIT 0 +#define TH_FLAGS_SME_ACTIVE BIT(TH_FLAGS_SME_ACTIVE_BIT) + +#ifndef __ASSEMBLER__ + #include <linux/types.h> #include <asm/io.h> -/* This must match data at realmode.S */ +/* This must match data at realmode/rm/header.S */ struct real_mode_header { u32 text_start; u32 ro_end; /* SMP trampoline */ u32 trampoline_start; - u32 trampoline_status; u32 trampoline_header; +#ifdef CONFIG_AMD_MEM_ENCRYPT + u32 sev_es_trampoline_start; +#endif #ifdef CONFIG_X86_64 + u32 trampoline_start64; u32 trampoline_pgd; #endif /* ACPI S3 wakeup */ @@ -27,7 +40,7 @@ struct real_mode_header { #endif }; -/* This must match data at trampoline_32/64.S */ +/* This must match data at realmode/rm/trampoline_{32,64}.S */ struct trampoline_header { #ifdef CONFIG_X86_32 u32 start; @@ -38,15 +51,21 @@ struct trampoline_header { u64 start; u64 efer; u32 cr4; + u32 flags; + u32 lock; #endif }; extern struct real_mode_header *real_mode_header; extern unsigned char real_mode_blob_end[]; -extern unsigned long init_rsp; extern unsigned long initial_code; -extern unsigned long initial_gs; +extern unsigned long initial_stack; +#ifdef CONFIG_AMD_MEM_ENCRYPT +extern unsigned long initial_vc_handler; +#endif + +extern u32 *trampoline_lock; extern unsigned char real_mode_blob[]; extern unsigned char real_mode_relocs[]; @@ -56,9 +75,26 @@ extern unsigned char startup_32_smp[]; extern unsigned char boot_gdt[]; #else extern unsigned char secondary_startup_64[]; +extern unsigned char secondary_startup_64_no_verify[]; #endif +static __always_inline size_t real_mode_size_needed(void) +{ + if (real_mode_header) + return 0; /* already allocated. */ + + return ALIGN(real_mode_blob_end - real_mode_blob, PAGE_SIZE); +} + +static inline void set_real_mode_mem(phys_addr_t mem) +{ + real_mode_header = (struct real_mode_header *) __va(mem); +} + void reserve_real_mode(void); -void setup_real_mode(void); +void load_trampoline_pgtable(void); +void init_real_mode(void); + +#endif /* __ASSEMBLER__ */ #endif /* _ARCH_X86_REALMODE_H */ |