mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
CHIPSEC
ac2ca7264f
UEFI shell. 2. Decompression of images in SPI flash parsing is only supported in Windows. 3. UEFI - Support for IA32 and i586 (Quark) 4. Added capability to use modules from an arbitrary path with the -I / --import command line option 5. Module functionality encapsulated in class inheriting BaseModule 6. Fixed loading platform specific configuration 7. Fixed issue with modules which run on multiple logical CPUs hanging on Bay Trail (Windows/Linux). The issue still exist when running from UEFI shell 8. Added template for a module - module_template.py 9. Added options to flush log files 10. Added ability to define custom platforms Driver changes: 1. Windows - Added IOCTL_ALLOC_PHYSMEM to allocate physical memory buffer 2. Linux - Fix wrpci defect
485 lines
11 KiB
NASM
485 lines
11 KiB
NASM
TITLE cpu.asm: Assembly code for the x64 resources
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.CODE cpu_asm_code$__a
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PUBLIC DisableInterrupts
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PUBLIC WritePortDword
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PUBLIC WritePortWord
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PUBLIC WritePortByte
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PUBLIC ReadPortDword
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PUBLIC ReadPortWord
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PUBLIC ReadPortByte
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PUBLIC WriteHighCMOSByte
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PUBLIC WriteLowCMOSByte
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PUBLIC SendAPMSMI
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PUBLIC WritePCIByte
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PUBLIC WritePCIWord
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PUBLIC WritePCIDword
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PUBLIC ReadPCIByte
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PUBLIC ReadPCIWord
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PUBLIC ReadPCIDword
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PUBLIC _rdmsr
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PUBLIC _wrmsr
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PUBLIC _load_gdt
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PUBLIC _rflags
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;------------------------------------------------------------------------------
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; UINT64 _rflags()
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;------------------------------------------------------------------------------
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_rflags PROC
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pushfq
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pop rax
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ret
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_rflags ENDP
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;------------------------------------------------------------------------------
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; void _store_idtr(
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; unsigned char *address // rcx
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; )
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;------------------------------------------------------------------------------
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_store_idtr PROC
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sidt fword ptr [rcx]
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ret
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_store_idtr ENDP
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;------------------------------------------------------------------------------
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; void _load_idtr(
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; unsigned char *address // rcx
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; )
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;------------------------------------------------------------------------------
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_load_idtr PROC
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lidt fword ptr [rcx]
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ret
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_load_idtr ENDP
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;------------------------------------------------------------------------------
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; void _store_gdtr(
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; unsigned char *address // rcx
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; )
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;------------------------------------------------------------------------------
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_store_gdtr PROC
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sgdt fword ptr [rcx]
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ret
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_store_gdtr ENDP
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;------------------------------------------------------------------------------
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; void _load_gdtr(
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; unsigned char *address // rcx
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; )
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;------------------------------------------------------------------------------
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_load_gdtr PROC
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lgdt fword ptr [rcx]
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ret
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_load_gdtr ENDP
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;------------------------------------------------------------------------------
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; void _store_ldtr(
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; unsigned char *address // rcx
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; )
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;------------------------------------------------------------------------------
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_store_ldtr PROC
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;sldt fword ptr [rcx]
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ret
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_store_ldtr ENDP
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;------------------------------------------------------------------------------
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; void _load_ldtr(
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; unsigned char *address // rcx
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; )
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;------------------------------------------------------------------------------
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_load_ldtr PROC
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;lldt fword ptr [rcx]
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ret
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_load_ldtr ENDP
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;------------------------------------------------------------------------------
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; void _load_gdt(
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; unsigned char *value // rcx
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; )
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;------------------------------------------------------------------------------
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_load_gdt PROC
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sgdt fword ptr [rcx]
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lgdt fword ptr [rcx]
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ret
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_load_gdt ENDP
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;------------------------------------------------------------------------------
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; void _rdmsr(
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; unsigned int msr_num, // rcx
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; unsigned int* msr_lo, // rdx
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; unsigned int* msr_hi // r8
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; )
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;------------------------------------------------------------------------------
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_rdmsr PROC
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push r10
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push r11
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push rax
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push rdx
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mov r10, rdx ; msr_lo
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mov r11, r8 ; msr_hi
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; rcx has msr_num
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rdmsr
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; Write MSR results in edx:eax
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mov dword ptr [r10], eax
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mov dword ptr [r11], edx
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pop rdx
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pop rax
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pop r11
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pop r10
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ret
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_rdmsr ENDP
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;------------------------------------------------------------------------------
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; void _wrmsr(
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; unsigned int msr_num, // rcx
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; unsigned int msr_hi, // rdx
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; unsigned int msr_lo // r8
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; )
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;------------------------------------------------------------------------------
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_wrmsr PROC
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push rax
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; rcx has msr_num
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; rdx has msr_hi
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; move msr_lo from r8 to rax
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mov rax, r8
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wrmsr
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pop rax
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ret
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_wrmsr ENDP
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;------------------------------------------------------------------------------
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; void
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; DisableInterrupts (
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; )
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;------------------------------------------------------------------------------
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DisableInterrupts PROC
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cli
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ret
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DisableInterrupts ENDP
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;------------------------------------------------------------------------------
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; void
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; WritePortDword (
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; unsigned int out_value // rcx
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; unsigned short port_num // rdx
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; )
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;------------------------------------------------------------------------------
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WritePortDword PROC
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push rax
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mov rax, rcx
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out dx, rax
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pop rax
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ret
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WritePortDword ENDP
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;------------------------------------------------------------------------------
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; void
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; WritePortWord (
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; unsigned short out_value // rcx
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; unsigned short port_num // rdx
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; )
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;------------------------------------------------------------------------------
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WritePortWord PROC
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push rax
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mov rax, rcx
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out dx, ax
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pop rax
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ret
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WritePortWord ENDP
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;------------------------------------------------------------------------------
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; void
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; WritePortByte (
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; unsigned char out_value // rcx
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; unsigned short port_num // rdx
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; )
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;------------------------------------------------------------------------------
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WritePortByte PROC
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push rax
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mov rax, rcx
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out dx, al
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pop rax
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ret
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WritePortByte ENDP
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;------------------------------------------------------------------------------
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; unsigned int
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; ReadPortDword (
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; unsigned short port_num // rcx
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; )
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;------------------------------------------------------------------------------
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ReadPortDword PROC
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push rdx
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xor rax, rax
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mov rdx, rcx
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in eax, dx
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pop rdx
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ret
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ReadPortDword ENDP
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;------------------------------------------------------------------------------
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; unsigned short
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; ReadPortWord (
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; unsigned short port_num // rcx
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; )
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;------------------------------------------------------------------------------
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ReadPortWord PROC
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push rdx
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xor rax, rax
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mov rdx, rcx
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in ax, dx
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pop rdx
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ret
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ReadPortWord ENDP
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;------------------------------------------------------------------------------
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; unsigned char
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; ReadPortByte (
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; unsigned short port_num // rcx
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; )
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;------------------------------------------------------------------------------
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ReadPortByte PROC
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push rdx
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xor rax, rax
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mov rdx, rcx
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in al, dx
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pop rdx
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ret
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ReadPortByte ENDP
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;------------------------------------------------------------------------------
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; void
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; WriteHighCMOSByte (
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; unsigned char cmos_off // rcx
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; unsigned char val // rdx
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; )
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;------------------------------------------------------------------------------
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WriteHighCMOSByte PROC
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push rax
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mov rax, rcx
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out 72h, al
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mov rax, rdx
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out 73h, al
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pop rax
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ret
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WriteHighCMOSByte ENDP
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;------------------------------------------------------------------------------
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; void
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; WriteLowCMOSByte (
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; unsigned char cmos_off // rcx
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; unsigned char val // rdx
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; )
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;------------------------------------------------------------------------------
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WriteLowCMOSByte PROC
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push rax
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mov rax, rcx
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or al, 80h
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out 70h, al
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mov rax, rdx
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out 71h, al
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pop rax
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ret
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WriteLowCMOSByte ENDP
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; @TODO: looks incorrect
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;------------------------------------------------------------------------------
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; void
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; SendAPMSMI (
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; unsigned int apm_port_value // rcx
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; IN UINT64 rax_value // rdx
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; )
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;------------------------------------------------------------------------------
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SendAPMSMI PROC
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push rax
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push rdx
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mov rax, rcx
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mov dx, 0B2h
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out dx, rax
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pop rdx
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pop rax
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ret
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SendAPMSMI ENDP
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;------------------------------------------------------------------------------
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; void
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; WritePCIByte (
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; unsigned int pci_reg // rcx
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; unsigned short cfg_data_port // rdx
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; unsigned char byte_value // r8
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; )
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;------------------------------------------------------------------------------
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WritePCIByte PROC
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push rax
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push rdx
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cli
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mov rax, rcx ; pci_reg
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mov dx, 0CF8h
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out dx, rax
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mov rax, r8 ; byte_value
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pop rdx ; cfg_data_port
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out dx, al
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sti
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pop rax
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ret
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WritePCIByte ENDP
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;------------------------------------------------------------------------------
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; void
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; WritePCIWord (
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; unsigned int pci_reg // rcx
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; unsigned short cfg_data_port // rdx
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; unsigned short word_value // r8
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; )
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;------------------------------------------------------------------------------
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WritePCIWord PROC
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push rax
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push rdx
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cli
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mov rax, rcx ; pci_reg
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mov dx, 0CF8h
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out dx, rax
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mov rax, r8 ; byte_value
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pop rdx ; cfg_data_port
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out dx, ax
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sti
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pop rax
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ret
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WritePCIWord ENDP
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;------------------------------------------------------------------------------
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; void
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; WritePCIDword (
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; unsigned int pci_reg // rcx
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; unsigned short cfg_data_port // rdx
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; unsigned int dword_value // r8
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; )
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;------------------------------------------------------------------------------
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WritePCIDword PROC
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push rax
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push rdx
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cli
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mov rax, rcx ; pci_reg
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mov dx, 0CF8h
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out dx, rax
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mov rax, r8 ; byte_value
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pop rdx ; cfg_data_port
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out dx, eax
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sti
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pop rax
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ret
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WritePCIDword ENDP
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;------------------------------------------------------------------------------
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; unsigned char
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; ReadPCIByte (
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; unsigned int pci_reg // rcx
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; unsigned short cfg_data_port // rdx
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; )
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;------------------------------------------------------------------------------
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ReadPCIByte PROC
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push rdx
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cli
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mov rax, rcx ; pci_reg
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mov dx, 0CF8h
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out dx, rax
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xor rax, rax
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pop rdx ; cfg_data_port
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in al, dx
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sti
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ret
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ReadPCIByte ENDP
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;------------------------------------------------------------------------------
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; unsigned short
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; ReadPCIWord (
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; unsigned int pci_reg // rcx
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; unsigned short cfg_data_port // rdx
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; )
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;------------------------------------------------------------------------------
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ReadPCIWord PROC
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push rdx
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cli
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mov rax, rcx ; pci_reg
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mov dx, 0CF8h
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out dx, rax
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xor rax, rax
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pop rdx ; cfg_data_port
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in ax, dx
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sti
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ret
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ReadPCIWord ENDP
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;------------------------------------------------------------------------------
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; unsigned int
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; ReadPCIDword (
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; unsigned int pci_reg // rcx
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; unsigned short cfg_data_port // rdx
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; )
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;------------------------------------------------------------------------------
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ReadPCIDword PROC
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push rdx
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cli
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mov rax, rcx ; pci_reg
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mov dx, 0CF8h
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out dx, rax
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xor rax, rax
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pop rdx ; cfg_data_port
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in eax, dx
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sti
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ret
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ReadPCIDword ENDP
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END
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