mirror of
https://github.com/Tom-on64/kern.git
synced 2026-11-03 18:22:22 +00:00
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
#ifndef PHYSICAL_MEM_MANAGER_H
|
|
#define PHYSICAL_MEM_MANAGER_H
|
|
|
|
typedef struct smapEntry_s {
|
|
uint64_t baseAddress;
|
|
uint64_t length;
|
|
uint32_t type;
|
|
uint32_t acpiAttr;
|
|
} __attribute__ ((packed)) smapEntry_t;
|
|
|
|
void printPhysicalMemmap() {
|
|
uint32_t entryCount = *(uint32_t*)0x8500;
|
|
smapEntry_t* smapEntry = (smapEntry_t*)0x8504;
|
|
|
|
for (uint32_t i = 0; i < entryCount; i++) {
|
|
print("Region ");
|
|
print(itoa(i, 10));
|
|
print(" - base: 0x");
|
|
print(itoa(smapEntry->baseAddress, 16));
|
|
print(" length: 0x");
|
|
print(itoa(smapEntry->length, 16));
|
|
print(" type: ");
|
|
print(itoa(smapEntry->type, 10));
|
|
|
|
switch (smapEntry->type) {
|
|
case 1: print(" (Available)"); break;
|
|
case 2: print(" (Reserved)"); break;
|
|
case 3: print(" (ACPI Reclaim)"); break;
|
|
case 4: print(" (ACPI NVS)"); break;
|
|
default: print(" (Reserved)"); break;
|
|
}
|
|
|
|
putc('\n');
|
|
smapEntry++;
|
|
}
|
|
|
|
smapEntry--; // We incremented it after the last entry
|
|
|
|
print("\nTotal memory: 0x");
|
|
print(itoa(smapEntry->baseAddress + smapEntry->length - 1, 16));
|
|
print(" Bytes\n");
|
|
}
|
|
|
|
|
|
#endif
|