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ACPI reading memory when mapped to higher half

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This commit is contained in:
Nigel Barink
2023-09-11 23:23:38 +02:00
parent e8df6ec628
commit 2970806705
3 changed files with 46 additions and 11 deletions
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15
kernel/acpi/rsdp.cpp
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@ -23,11 +23,22 @@ RSDPDescriptor* FindRSD(){
char* memory_byte = (char*) 0x000f2e14;
const void* string = "RSD PTR ";
for( ; (uint32_t) memory_byte < 0x00100000; memory_byte+=10){
for( ; (uint32_t) memory_byte < 0x0100000; memory_byte+=10){
if( memcmp(memory_byte , string , 8 ) == 0 ) {
printf("RSD PTR found at 0x%x !\n", memory_byte);
return (RSDPDescriptor*) memory_byte;
break;
}
}
return (RSDPDescriptor*) memory_byte;
memory_byte = (char*) 0x000E0000;
for ( ;(uint32_t) memory_byte < 0x000FFFFF; memory_byte += 1)
{
if( memcmp(memory_byte , string , 8 ) == 0 ) {
printf("RSD PTR found at 0x%x !\n", memory_byte);
return (RSDPDescriptor*) memory_byte;
break;
}
}
}