mirror of
https://github.com/BoredDevNL/BoredOS.git
synced 2026-05-15 10:48:38 +00:00
89bdb860dd
New feature(s): - Network stack - Piping commands into a udpsend message Bug fix(es): -N/A
33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
#include <stdint.h>
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#include "limine.h"
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#include <stddef.h>
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static volatile struct limine_hhdm_request hhdm_request __attribute__((used, section(".requests"))) = {
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.id = LIMINE_HHDM_REQUEST,
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.revision = 0,
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.response = NULL
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};
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static volatile struct limine_kernel_address_request kernel_addr_request __attribute__((used, section(".requests"))) = {
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.id = LIMINE_KERNEL_ADDRESS_REQUEST,
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.revision = 0,
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.response = NULL
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};
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static uint64_t hhdm_offset = 0;
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static uint64_t kernel_phys_base = 0;
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static uint64_t kernel_virt_base = 0;
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void platform_init(void) {
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if (hhdm_request.response) { hhdm_offset = hhdm_request.response->offset; }
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if (kernel_addr_request.response) {
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kernel_phys_base = kernel_addr_request.response->physical_base;
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kernel_virt_base = kernel_addr_request.response->virtual_base;
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}
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}
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uint64_t p2v(uint64_t phys) { return phys + hhdm_offset; }
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uint64_t v2p(uint64_t virt) {
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if (kernel_virt_base && virt >= kernel_virt_base) {
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return virt - kernel_virt_base + kernel_phys_base;
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}
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if (hhdm_offset && virt >= hhdm_offset) {
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return virt - hhdm_offset;
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}
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return virt;
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}
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