projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 084ee1c6 JS |
1 | #ifndef _ARCH_X86_REALMODE_H |
| 2 | #define _ARCH_X86_REALMODE_H | |
| 3 | ||
| 4 | #include <linux/types.h> | |
| 5 | #include <asm/io.h> | |
| 6 | ||
| 7 | /* This must match data at realmode.S */ | |
| 8 | struct real_mode_header { | |
| 9 | u32 text_start; | |
| 10 | u32 ro_end; | |
| 48927bbb | 11 | /* SMP trampoline */ |
| f37240f1 | 12 | u32 trampoline_start; |
| 48927bbb | 13 | u32 trampoline_status; |
| f37240f1 JS |
14 | u32 trampoline_header; |
| 15 | #ifdef CONFIG_X86_64 | |
| 16 | u32 trampoline_pgd; | |
| 5a8c9aeb | 17 | #endif |
| f37240f1 | 18 | /* ACPI S3 wakeup */ |
| c9b77ccb JS |
19 | #ifdef CONFIG_ACPI_SLEEP |
| 20 | u32 wakeup_start; | |
| 21 | u32 wakeup_header; | |
| f37240f1 JS |
22 | #endif |
| 23 | /* APM/BIOS reboot */ | |
| f37240f1 | 24 | u32 machine_real_restart_asm; |
| 65051397 PA |
25 | #ifdef CONFIG_X86_64 |
| 26 | u32 machine_real_restart_seg; | |
| f37240f1 | 27 | #endif |
| cda846f1 | 28 | }; |
| f37240f1 JS |
29 | |
| 30 | /* This must match data at trampoline_32/64.S */ | |
| 31 | struct trampoline_header { | |
| 32 | #ifdef CONFIG_X86_32 | |
| 33 | u32 start; | |
| cda846f1 | 34 | u16 gdt_pad; |
| f37240f1 JS |
35 | u16 gdt_limit; |
| 36 | u32 gdt_base; | |
| 37 | #else | |
| 38 | u64 start; | |
| 638d957b | 39 | u64 efer; |
| cda846f1 | 40 | u32 cr4; |
| c9b77ccb | 41 | #endif |
| cda846f1 | 42 | }; |
| 084ee1c6 | 43 | |
| b429dbf6 JS |
44 | extern struct real_mode_header *real_mode_header; |
| 45 | extern unsigned char real_mode_blob_end[]; | |
| 084ee1c6 JS |
46 | |
| 47 | extern unsigned long init_rsp; | |
| 48 | extern unsigned long initial_code; | |
| 49 | extern unsigned long initial_gs; | |
| 50 | ||
| 51 | extern unsigned char real_mode_blob[]; | |
| 52 | extern unsigned char real_mode_relocs[]; | |
| 53 | ||
| 48927bbb JS |
54 | #ifdef CONFIG_X86_32 |
| 55 | extern unsigned char startup_32_smp[]; | |
| 56 | extern unsigned char boot_gdt[]; | |
| 57 | #else | |
| 58 | extern unsigned char secondary_startup_64[]; | |
| 59 | #endif | |
| 60 | ||
| 5ff3e2c3 AL |
61 | static inline size_t real_mode_size_needed(void) |
| 62 | { | |
| 63 | if (real_mode_header) | |
| 64 | return 0; /* already allocated. */ | |
| 65 | ||
| 66 | return ALIGN(real_mode_blob_end - real_mode_blob, PAGE_SIZE); | |
| 67 | } | |
| 68 | ||
| 69 | void set_real_mode_mem(phys_addr_t mem, size_t size); | |
| 4f7b9226 | 70 | void reserve_real_mode(void); |
| 084ee1c6 JS |
71 | |
| 72 | #endif /* _ARCH_X86_REALMODE_H */ |