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Rev 8284 Rev 8656
Line 21... Line 21...
21 
MEMORY_MAP_SIZE = 0x10000
 21 
MEMORY_MAP_SIZE = 0x10000
22 
GOP_BUFFER_SIZE = 0x100
 22 
GOP_BUFFER_SIZE = 0x100
23 
LIP_BUFFER_SIZE = 0x100
 23 
LIP_BUFFER_SIZE = 0x100
24 
FILE_BUFFER_SIZE = 0x1000
 24 
FILE_BUFFER_SIZE = 0x1000
Line -... Line 25...
- 
 
 25 
 
25 
 
 26 
KERNEL_TRAMPOLINE = 0x8f80      ; just before BOOT_LO
26 
KERNEL_BASE  =  0x10000
 27 
KERNEL_BASE  =  0x10000
27 
RAMDISK_BASE = 0x100000
 28 
RAMDISK_BASE = 0x100000
Line 28... Line 29...
28 
MAX_FILE_SIZE = 0x10000000
 29 
MAX_FILE_SIZE = 0x10000000
Line 816... Line 817...
816 
        mov     rsi, cfg_opt_value_syspath
 817 
        mov     rsi, cfg_opt_value_syspath
817 
        mov     rdi, BOOT_LO.syspath
 818 
        mov     rdi, BOOT_LO.syspath
818 
        mov     ecx, 0x17
 819 
        mov     ecx, 0x17
819 
        rep movsb
 820 
        rep movsb
Line -... Line 821...
- 
 
 821 
 
- 
 
 822 
        ; kernel trampoline
- 
 
 823 
        mov     rsi, kernel_trampoline
- 
 
 824 
        mov     rdi, KERNEL_TRAMPOLINE
- 
 
 825 
        mov     ecx, kernel_trampoline.size
- 
 
 826 
        rep movsb
- 
 
 827 
 
820 
 
 828 
        mov     rax, GDTR
Line 821... Line 829...
821 
        lgdt    [cs:GDTR]
 829 
        lgdt    [cs:rax]
822 
 
 830 
 
823 
        mov     ax, DATA_32_SELECTOR
 831 
        mov     ax, DATA_32_SELECTOR
824 
        mov     ds, ax
 832 
        mov     ds, ax
825 
        mov     es, ax
 833 
        mov     es, ax
826 
        mov     fs, ax
 834 
        mov     fs, ax
Line 827... Line 835...
827 
        mov     gs, ax
 835 
        mov     gs, ax
828 
        mov     ss, ax
 836 
        mov     ss, ax
829 
 
 837 
 
830 
        push    CODE_32_SELECTOR
 838 
        push    CODE_32_SELECTOR
831 
        lea     rax, [.next]
 - 
 
832 
        push    rax
 - 
 
833 
        retf
 - 
 
834 
use32
 - 
 
835 
align 16
 - 
 
836 
.next:
 - 
 
837 
        mov     eax, cr0
 - 
 
838 
        and     eax, not CR0_PG
 - 
 
839 
        mov     cr0, eax
 - 
 
840 
 
 - 
 
841 
        mov     ecx, MSR_AMD_EFER
 - 
 
842 
        rdmsr
 - 
 
843 
        btr     eax, 8                  ; LME
 - 
 
844 
        wrmsr
 - 
 
845 
 
 - 
 
846 
        mov     eax, cr4
 - 
 
847 
        and     eax, not CR4_PAE
 - 
 
848 
        mov     cr4, eax
 - 
 
Line 849... Line -...
849 
 
 - 
 
850 
        push    KERNEL_BASE
 839 
        mov     rax, KERNEL_TRAMPOLINE
851 
        retn
 840 
        push    rax
852 
 
 841 
        retf
853 
use64
 842 
 
854 
.error:
 843 
.error:
Line 1084... Line 1073...
1084 
        mov     rdi, msg
 1073 
        mov     rdi, msg
1085 
        rep stosw
 1074 
        rep stosw
1086 
        pop     rdi rsi rdx rcx rbx rax
 1075 
        pop     rdi rsi rdx rcx rbx rax
1087 
        ret
 1076 
        ret
Line -... Line 1077...
- 
 
 1077 
 
- 
 
 1078 
use32
- 
 
 1079 
kernel_trampoline:
- 
 
 1080 
org KERNEL_TRAMPOLINE
- 
 
 1081 
        mov     eax, cr0
1088 
 
 1082 
        and     eax, not CR0_PG
- 
 
 1083 
        mov     cr0, eax
- 
 
 1084 
 
- 
 
 1085 
        mov     ecx, MSR_AMD_EFER
- 
 
 1086 
        rdmsr
- 
 
 1087 
        btr     eax, 8                  ; LME
- 
 
 1088 
        wrmsr
- 
 
 1089 
 
- 
 
 1090 
        mov     eax, cr4
- 
 
 1091 
        and     eax, not CR4_PAE
- 
 
 1092 
        mov     cr4, eax
- 
 
 1093 
 
- 
 
 1094 
        push    KERNEL_BASE
- 
 
 1095 
        retn
1089 
section '.rodata' data readable
 1096 
 
1090 
align 16
 1097 
align 16
1091 
GDTR:
 1098 
GDTR:
1092 
        dw 4*8-1
 1099 
        dw 4*8-1
1093 
        dq GDT
 1100 
        dq GDT
1094 
align 16
 1101 
align 16
1095 
GDT:
 1102 
GDT:
1096 
        dw 0, 0, 0, 0
 1103 
        dw 0, 0, 0, 0
1097 
        dw 0FFFFh,0,9A00h,0CFh          ; 32-bit code
 1104 
        dw 0FFFFh,0,9A00h,0CFh          ; 32-bit code
1098 
        dw 0FFFFh,0,9200h,0CFh          ; flat data
 1105 
        dw 0FFFFh,0,9200h,0CFh          ; flat data
- 
 
 1106 
        dw 0FFFFh,0,9A00h,0AFh          ; 64-bit code
- 
 
 1107 
assert $ < BOOT_LO
Line -... Line 1108...
- 
 
 1108 
kernel_trampoline.size = $ - KERNEL_TRAMPOLINE
1099 
        dw 0FFFFh,0,9A00h,0AFh          ; 64-bit code
 1109 
 
1100 
 
 1110 
section '.rodata' data readable
1101 
gopuuid         db EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID
 1111 
gopuuid         db EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID
Line 1102... Line 1112...
1102 
lipuuid         db EFI_LOADED_IMAGE_PROTOCOL_GUID
 1112 
lipuuid         db EFI_LOADED_IMAGE_PROTOCOL_GUID