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subhobhai943
70d5925b16
- Implement AArch64 HAL, vector table (16 aligned vectors), GICv2, Generic Timer, Stage-1 MMU (39-bit VA), PL011 UART - Build unified multi-architecture abstraction layer in include/arch/arch.h - Create interactive Linux-like Kconfig TUI menuconfig in scripts/kconfig/menuconfig.py - Support make menuconfig, defconfig, x86_64_defconfig, aarch64_defconfig - Update master Makefile for cross-compiling x86_64 (x86_64-elf-) and AArch64 (aarch64-linux-gnu-) - Dynamic architecture awareness across printk, uname, neofetch, and LazyBox
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
#ifndef _ARCH_X86_64_IO_H
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#define _ARCH_X86_64_IO_H
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#include <stdint.h>
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#if defined(__x86_64__)
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static inline void outb(uint16_t port, uint8_t val) {
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__asm__ volatile ("outb %0, %1" : : "a"(val), "Nd"(port));
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}
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static inline uint8_t inb(uint16_t port) {
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uint8_t ret;
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__asm__ volatile ("inb %1, %0" : "=a"(ret) : "Nd"(port));
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return ret;
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}
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static inline void outw(uint16_t port, uint16_t val) {
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__asm__ volatile ("outw %0, %1" : : "a"(val), "Nd"(port));
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}
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static inline uint16_t inw(uint16_t port) {
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uint16_t ret;
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__asm__ volatile ("inw %1, %0" : "=a"(ret) : "Nd"(port));
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return ret;
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}
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static inline void outl(uint16_t port, uint32_t val) {
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__asm__ volatile ("outl %0, %1" : : "a"(val), "Nd"(port));
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}
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static inline uint32_t inl(uint16_t port) {
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uint32_t ret;
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__asm__ volatile ("inl %1, %0" : "=a"(ret) : "Nd"(port));
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return ret;
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}
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static inline void io_wait(void) {
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outb(0x80, 0);
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}
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static inline void cli(void) {
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__asm__ volatile ("cli");
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}
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static inline void sti(void) {
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__asm__ volatile ("sti");
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}
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static inline void hlt(void) {
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__asm__ volatile ("hlt");
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}
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#else
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// Portable Stubs for non-x86 architectures
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static inline void outb(uint16_t port, uint8_t val) { (void)port; (void)val; }
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static inline uint8_t inb(uint16_t port) { (void)port; return 0; }
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static inline void outw(uint16_t port, uint16_t val) { (void)port; (void)val; }
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static inline uint16_t inw(uint16_t port) { (void)port; return 0; }
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static inline void outl(uint16_t port, uint32_t val) { (void)port; (void)val; }
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static inline uint32_t inl(uint16_t port) { (void)port; return 0; }
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static inline void io_wait(void) { }
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static inline void cli(void) { __asm__ volatile("msr daifset, #2" ::: "memory"); }
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static inline void sti(void) { __asm__ volatile("msr daifclr, #2" ::: "memory"); }
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static inline void hlt(void) { __asm__ volatile("wfi"); }
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#endif
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#endif // _ARCH_X86_64_IO_H
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