mirror of
https://github.com/Zeal-Operating-System/ZealOS.git
synced 2025-06-07 00:04:48 +00:00
131 lines
3.3 KiB
HolyC
Executable File
131 lines
3.3 KiB
HolyC
Executable File
asm {
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USE32
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//************************************
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// ASM Global variables not required for 16-bit start-up
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ALIGN 8, OC_NOP
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MEM_HEAP_BASE:: DU64 0;
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MEM_HEAP_LIMIT:: DU64 0;
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MEM_PAGE_SIZE:: DU64 0;
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MEM_MAPPED_SPACE:: DU64 0;
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MEM_2MEG_NUM:: DU64 0;
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MEM_1GIG_NUM:: DU64 0;
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MEM_512GIG_NUM:: DU64 0;
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MEM_PML2:: DU64 0;
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MEM_PML3:: DU64 0;
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MEM_PML4:: DU64 0;
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#exe {
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StreamPrint("SYS_MEM_INIT_FLAG:: DU8 %d;"
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"SYS_MEM_INIT_VAL:: DU8 %d;"
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"SYS_HEAP_INIT_FLAG:: DU8 %d;"
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"SYS_HEAP_INIT_VAL:: DU8 %d;"
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"SYS_VAR_INIT_FLAG:: DU8 %d;"
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"SYS_VAR_INIT_VAL:: DU8 %d;",
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kernel_config->opts[CONFIG_MEM_INIT],
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kernel_config->mem_init_val,
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kernel_config->opts[CONFIG_HEAP_INIT],
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kernel_config->heap_init_val,
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kernel_config->opts[CONFIG_VAR_INIT],
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kernel_config->var_init_val);
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};
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SYS_HEAP_DEBUG_FLAG:: DU8 _CONFIG_HEAP_DEBUG;
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ALIGN 8, 0
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SYS_CTRL_ALT_FLAGS:: DU64 0;
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SYS_EXTERN_TABLE:: DU64 0;
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SYS_CODE_BP:: DU64 0;
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SYS_DATA_BP:: DU64 0;
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SYS_PROGRESSES::
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SYS_PROGRESS1:: DU64 0;
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SYS_PROGRESS1_MAX:: DU64 0;
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SYS_PROGRESS1_T0:: DU64 0;
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SYS_PROGRESS1_TF:: DU64 0;
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SYS_PROGRESS1_DESC:: DU8 PROGRESS_DESC_LEN DUP(0);
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SYS_PROGRESS2:: DU64 0;
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SYS_PROGRESS2_MAX:: DU64 0;
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SYS_PROGRESS2_T0:: DU64 0;
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SYS_PROGRESS2_TF:: DU64 0;
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SYS_PROGRESS2_DESC:: DU8 PROGRESS_DESC_LEN DUP(0);
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SYS_PROGRESS3:: DU64 0;
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SYS_PROGRESS3_MAX:: DU64 0;
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SYS_PROGRESS3_T0:: DU64 0;
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SYS_PROGRESS3_TF:: DU64 0;
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SYS_PROGRESS3_DESC:: DU8 PROGRESS_DESC_LEN DUP(0);
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SYS_PROGRESS4:: DU64 0;
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SYS_PROGRESS4_MAX:: DU64 0;
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SYS_PROGRESS4_T0:: DU64 0;
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SYS_PROGRESS4_TF:: DU64 0;
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SYS_PROGRESS4_DESC:: DU8 PROGRESS_DESC_LEN DUP(0);
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#assert $$ - SYS_PROGRESSES == sizeof(CProgress) * 4
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SYS_FOCUS_TASK:: DU64 0;
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SYS_CPU_STRUCTS:: DU64 0;
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SYS_MP_COUNT:: DU64 1;
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SYS_MP_COUNT_INITIAL:: DU64 1;
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SYS_MP_COUNT_LOCK:: DU64 1;
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ALIGN DEFAULT_CACHE_LINE_WIDTH, OC_NOP
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SYS_CACHE_LINE_WIDTH:: DU64 DEFAULT_CACHE_LINE_WIDTH;
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DU8 DEFAULT_CACHE_LINE_WIDTH - sizeof(CZXE) - 8 DUP(0);
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SYS_SEMAS:: DU8 SEMA_SEMAS_NUM * DEFAULT_CACHE_LINE_WIDTH DUP(0);
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//************************************
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ALIGN 16, OC_NOP
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CORE0_32BIT_INIT:: //Entry point for $LK,"BootRAM",A="MN:BootRAM"$.
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PUSH U32 RFLAGG_START
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POPFD
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MOV EAX, SYS_START_CR0
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MOV_CR0_EAX
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MOV AX, CGDT.boot_ds //LOAD DS SELECTOR
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MOV DS, AX
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BTS U32 [SYS_RUN_LEVEL], RLf_32BIT
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MOV ESI, U32 [SYS_BOOT_PATCH_TABLE_BASE]
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MOV EDI, U32 [MEM_BOOT_BASE]
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MOV AX, CGDT.ds
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MOV DS, AX
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MOV ES, AX
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MOV FS, AX
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MOV GS, AX
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MOV SS, AX
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MOV ESP, BOOT_RAM_LIMIT //Tmp Stack
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JMP @@02
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ALIGN 16, OC_NOP
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// Signature to find CORE0_32BIT_INIT
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DU64 0xaa23c08ed10bd4d7;
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DU64 0xf6ceba7d4b74179a;
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@@02:
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//Patch abs addresses
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MOV ECX, U32 CPatchTableAbsAddr.abs_address_count[ESI]
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LEA ESI, U32 CPatchTableAbsAddr.abs_address[ESI]
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@@05: LODSD
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ADD EAX, EDI
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ADD U32 [EAX], EDI
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LOOP @@05
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DU8 0xEA; //JMP CGDT.cs32:@@10
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DU32 @@10;
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DU16 CGDT.cs32;
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@@10: BTS U32 [SYS_RUN_LEVEL], RLf_PATCHED
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CALL SYS_FIND_PCIBIOS_SERVICE_DIR
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CALL SYS_FIND_PCI_SERVICES
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CALL SYS_INIT_PAGE_TABLES
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CALL SYS_INIT_16MEG_SYS_CODE_BP
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PUSH U32 0 //Return from next call will be 64-bit
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CALL SYS_ENTER_LONG_MODE
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//We fall-through to $LK,"KStart64",A="FL:::/Kernel/KStart64.ZC,1"$, next.
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}
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