66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/**
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* PROJECT: ExectOS
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* COPYRIGHT: See COPYING.md in the top level directory
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* FILE: xtoskrnl/ke/krnlinit.c
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* DESCRIPTION: XT kernel initialization
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* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
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*/
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#include <xtos.h>
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/**
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* This routine starts up the XT kernel. It is called by boot loader.
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*
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* @param Parameters
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* Supplies a pointer to memory area containing parameters passed to kernel by bootloader.
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTAPI
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VOID
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KeStartXtSystem(IN PKERNEL_INITIALIZATION_BLOCK Parameters)
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{
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/* Save the kernel initialization block */
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KeInitializationBlock = Parameters;
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/* Verify kernel and boot loader compatibility */
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if(KeInitializationBlock->BlockSize != sizeof(KERNEL_INITIALIZATION_BLOCK) ||
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KeInitializationBlock->BlockVersion != INITIALIZATION_BLOCK_VERSION ||
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KeInitializationBlock->ProtocolVersion != BOOT_PROTOCOL_VERSION)
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{
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/* Kernel and boot loader version mismatch */
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KeHaltSystem();
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}
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/* Check if debugging enabled and if boot loader provided routine for debug printing */
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if(DEBUG && KeInitializationBlock->LoaderInformation.DbgPrint)
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{
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/* Use loader's provided DbgPrint() routine for early printing to serial console */
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KeDbgPrint = KeInitializationBlock->LoaderInformation.DbgPrint;
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}
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/* Announce kernel startup */
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DebugPrint(L"Starting ExectOS v%d.%d for %s (%s-%s-%s-%s / %s %s)\n",
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XTOS_VERSION_MAJOR, XTOS_VERSION_MINOR, _ARCH_NAME, XTOS_VERSION_DATE,
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XTOS_VERSION_BUILD, XTOS_VERSION_ARCH, XTOS_VERSION_HASH,
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XTOS_COMPILER_NAME, XTOS_COMPILER_VERSION);
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/* Initialize boot CPU */
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ArInitializeProcessor(NULL);
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/* Initialize system resources */
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KepInitializeSystemResources();
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/* Architecture specific kernel initialization */
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KepInitializeMachine();
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/* Raise to HIGH runlevel */
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KeRaiseRunLevel(HIGH_LEVEL);
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/* Switch boot stack aligning it to 4 byte boundary */
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KepSwitchBootStack((ULONG_PTR)&ArKernelBootStack & ~0x3);
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}
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