1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ARCH_X86_REALMODE_H
3 #define _ARCH_X86_REALMODE_H
6 * Flag bit definitions for use with the flags field of the trampoline header
7 * in the CONFIG_X86_64 variant.
9 #define TH_FLAGS_SME_ACTIVE_BIT 0
10 #define TH_FLAGS_SME_ACTIVE BIT(TH_FLAGS_SME_ACTIVE_BIT)
14 #include <linux/types.h>
17 /* This must match data at realmode/rm/header.S */
18 struct real_mode_header {
23 u32 trampoline_header;
24 #ifdef CONFIG_AMD_MEM_ENCRYPT
25 u32 sev_es_trampoline_start;
31 #ifdef CONFIG_ACPI_SLEEP
36 u32 machine_real_restart_asm;
38 u32 machine_real_restart_seg;
42 /* This must match data at realmode/rm/trampoline_{32,64}.S */
43 struct trampoline_header {
57 extern struct real_mode_header *real_mode_header;
58 extern unsigned char real_mode_blob_end[];
60 extern unsigned long initial_code;
61 extern unsigned long initial_gs;
62 extern unsigned long initial_stack;
63 #ifdef CONFIG_AMD_MEM_ENCRYPT
64 extern unsigned long initial_vc_handler;
67 extern unsigned char real_mode_blob[];
68 extern unsigned char real_mode_relocs[];
71 extern unsigned char startup_32_smp[];
72 extern unsigned char boot_gdt[];
74 extern unsigned char secondary_startup_64[];
75 extern unsigned char secondary_startup_64_no_verify[];
78 static inline size_t real_mode_size_needed(void)
81 return 0; /* already allocated. */
83 return ALIGN(real_mode_blob_end - real_mode_blob, PAGE_SIZE);
86 static inline void set_real_mode_mem(phys_addr_t mem)
88 real_mode_header = (struct real_mode_header *) __va(mem);
91 void reserve_real_mode(void);
93 #endif /* __ASSEMBLY__ */
95 #endif /* _ARCH_X86_REALMODE_H */