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.S */
18 struct real_mode_header {
23 u32 trampoline_status;
24 u32 trampoline_header;
29 #ifdef CONFIG_ACPI_SLEEP
34 u32 machine_real_restart_asm;
36 u32 machine_real_restart_seg;
40 /* This must match data at trampoline_32/64.S */
41 struct trampoline_header {
55 extern struct real_mode_header *real_mode_header;
56 extern unsigned char real_mode_blob_end[];
58 extern unsigned long initial_code;
59 extern unsigned long initial_gs;
60 extern unsigned long initial_stack;
62 extern unsigned char real_mode_blob[];
63 extern unsigned char real_mode_relocs[];
66 extern unsigned char startup_32_smp[];
67 extern unsigned char boot_gdt[];
69 extern unsigned char secondary_startup_64[];
72 static inline size_t real_mode_size_needed(void)
75 return 0; /* already allocated. */
77 return ALIGN(real_mode_blob_end - real_mode_blob, PAGE_SIZE);
80 void set_real_mode_mem(phys_addr_t mem, size_t size);
81 void reserve_real_mode(void);
83 #endif /* __ASSEMBLY__ */
85 #endif /* _ARCH_X86_REALMODE_H */