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Reorganize early debug printing; initialize kernel stacks when needed

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This commit is contained in:
Rafal Kupiec
2022-12-28 23:11:35 +01:00
parent 75ac59f48a
commit dec021b1ec
9 changed files with 110 additions and 9 deletions
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19
xtoskrnl/ke/globals.c Normal file
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@@ -0,0 +1,19 @@
/**
* PROJECT: ExectOS
* COPYRIGHT: See COPYING.md in the top level directory
* FILE: xtoskrnl/ke/globals.c
* DESCRIPTION: XT kernel global variables
* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
*/
#include <xtos.h>
/* Kernel own boot stack */
UCHAR KepKernelBootStackData[KERNEL_STACK_SIZE] = {0};
/* Kernel own fault stack */
UCHAR KepKernelFaultStackData[KERNEL_STACK_SIZE] = {0};
/* Pointer to boot loader provided DbgPrint() routine */
VOID (*LdrPrint)(IN PWCHAR Format, IN ...) = NULL;

30
xtoskrnl/ke/krnlinit.c
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@@ -6,7 +6,7 @@
* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
*/
#include <xtkmapi.h>
#include <xtos.h>
/**
@@ -23,14 +23,34 @@ XTAPI
VOID
KeStartXtSystem(IN PKERNEL_INITIALIZATION_BLOCK Parameters)
{
/* Use XTLDR provided DbgPrint() routine for early printing to serial console */
VOID (*DbgPrint)(IN PWCHAR Format, IN ...) = Parameters->LoaderInformation.DbgPrint;
/* Check if debugging enabled and if boot loader provided routine for debug printing */
if(DBG && Parameters->LoaderInformation.DbgPrint)
{
/* Use loader's provided DbgPrint() routine for early printing to serial console */
LdrPrint = Parameters->LoaderInformation.DbgPrint;
}
/* Make sure kernel boot stack is initialized */
if(!Parameters->KernelBootStack)
{
/* Initialize kernel boot stack */
LDRPRINT(L"Initializing kernel boot stack\n");
Parameters->KernelBootStack = (ULONG_PTR)&KepKernelBootStackData[KERNEL_STACK_SIZE];
}
/* Make sure kernel fault stack is initialized */
if(!Parameters->KernelFaultStack)
{
/* Initialize kernel fault stack */
LDRPRINT(L"Initializing kernel fault stack\n");
Parameters->KernelFaultStack = (ULONG_PTR)&KepKernelFaultStackData[KERNEL_STACK_SIZE];
}
/* Print some message to serial console */
DbgPrint(L"Hello world from ExectOS kernel!\n");
LDRPRINT(L"Hello world from ExectOS kernel!\n");
/* Test kernel parameters */
DbgPrint(L"\n\n------ Kernel parameters block ------\n"
LDRPRINT(L"\n\n------ Kernel parameters block ------\n"
L"Loader block size: %lu\n"
L"Loader block version: %lu\n"
L"EFI Revision: %lu\n"