| Jarkko Sakkinen | 084ee1c6 | 2012-05-08 21:22:26 +0300 | [diff] [blame] | 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; |
| Jarkko Sakkinen | 48927bb | 2012-05-08 21:22:28 +0300 | [diff] [blame] | 11 | /* SMP trampoline */ |
| Jarkko Sakkinen | f37240f | 2012-05-08 21:22:43 +0300 | [diff] [blame] | 12 | u32 trampoline_start; |
| Jarkko Sakkinen | 48927bb | 2012-05-08 21:22:28 +0300 | [diff] [blame] | 13 | u32 trampoline_status; |
| Jarkko Sakkinen | f37240f | 2012-05-08 21:22:43 +0300 | [diff] [blame] | 14 | u32 trampoline_header; |
| 15 | #ifdef CONFIG_X86_64 |
| 16 | u32 trampoline_pgd; |
| Jarkko Sakkinen | 48927bb | 2012-05-08 21:22:28 +0300 | [diff] [blame] | 17 | #endif |
| Jarkko Sakkinen | f37240f | 2012-05-08 21:22:43 +0300 | [diff] [blame] | 18 | /* ACPI S3 wakeup */ |
| Jarkko Sakkinen | c9b77cc | 2012-05-08 21:22:29 +0300 | [diff] [blame] | 19 | #ifdef CONFIG_ACPI_SLEEP |
| 20 | u32 wakeup_start; |
| 21 | u32 wakeup_header; |
| 22 | #endif |
| Jarkko Sakkinen | f37240f | 2012-05-08 21:22:43 +0300 | [diff] [blame] | 23 | /* APM/BIOS reboot */ |
| Jarkko Sakkinen | f37240f | 2012-05-08 21:22:43 +0300 | [diff] [blame] | 24 | u32 machine_real_restart_asm; |
| H. Peter Anvin | 6505139 | 2012-06-16 21:47:37 -0700 | [diff] [blame] | 25 | #ifdef CONFIG_X86_64 |
| 26 | u32 machine_real_restart_seg; |
| Jarkko Sakkinen | f37240f | 2012-05-08 21:22:43 +0300 | [diff] [blame] | 27 | #endif |
| Jarkko Sakkinen | cda846f | 2012-05-08 21:22:46 +0300 | [diff] [blame] | 28 | }; |
| Jarkko Sakkinen | f37240f | 2012-05-08 21:22:43 +0300 | [diff] [blame] | 29 | |
| 30 | /* This must match data at trampoline_32/64.S */ |
| 31 | struct trampoline_header { |
| 32 | #ifdef CONFIG_X86_32 |
| 33 | u32 start; |
| Jarkko Sakkinen | cda846f | 2012-05-08 21:22:46 +0300 | [diff] [blame] | 34 | u16 gdt_pad; |
| Jarkko Sakkinen | f37240f | 2012-05-08 21:22:43 +0300 | [diff] [blame] | 35 | u16 gdt_limit; |
| 36 | u32 gdt_base; |
| 37 | #else |
| 38 | u64 start; |
| H. Peter Anvin | 638d957 | 2012-05-16 14:02:05 -0700 | [diff] [blame] | 39 | u64 efer; |
| Jarkko Sakkinen | cda846f | 2012-05-08 21:22:46 +0300 | [diff] [blame] | 40 | u32 cr4; |
| Jarkko Sakkinen | f37240f | 2012-05-08 21:22:43 +0300 | [diff] [blame] | 41 | #endif |
| Jarkko Sakkinen | cda846f | 2012-05-08 21:22:46 +0300 | [diff] [blame] | 42 | }; |
| Jarkko Sakkinen | 084ee1c6 | 2012-05-08 21:22:26 +0300 | [diff] [blame] | 43 | |
| Jarkko Sakkinen | b429dbf | 2012-05-08 21:22:41 +0300 | [diff] [blame] | 44 | extern struct real_mode_header *real_mode_header; |
| 45 | extern unsigned char real_mode_blob_end[]; |
| Jarkko Sakkinen | 084ee1c6 | 2012-05-08 21:22:26 +0300 | [diff] [blame] | 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 | |
| Jarkko Sakkinen | 48927bb | 2012-05-08 21:22:28 +0300 | [diff] [blame] | 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 | |
| Yinghai Lu | 4f7b9226 | 2013-01-24 12:19:51 -0800 | [diff] [blame] | 61 | void reserve_real_mode(void); |
| 62 | void setup_real_mode(void); |
| Jarkko Sakkinen | 084ee1c6 | 2012-05-08 21:22:26 +0300 | [diff] [blame] | 63 | |
| 64 | #endif /* _ARCH_X86_REALMODE_H */ |