diff options
author | Anna (navi) Figueiredo Gomes <navi@vlhl.dev> | 2023-12-13 13:24:48 +0100 |
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committer | Anna (navi) Figueiredo Gomes <navi@vlhl.dev> | 2023-12-25 18:37:20 +0100 |
commit | 30d6e8f850d2fe26fffdeef0c38fc627ef8bab9a (patch) | |
tree | cd786b6a79d6a58590b2d35308746761c1e3d977 /include/nrvn.h |
initial commit
currently with:
booted via multiboot 1
protected mode to long mode boostrap code
vga used for outputting
gdt and idt set up
identity paging for the whole memory reported by multiboot
pic and ps/2 set up
acpi code exists but is broken
Diffstat (limited to 'include/nrvn.h')
-rw-r--r-- | include/nrvn.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/nrvn.h b/include/nrvn.h new file mode 100644 index 0000000..abb03b4 --- /dev/null +++ b/include/nrvn.h @@ -0,0 +1,22 @@ +#ifndef _NRVN_H_ +#define _NRVN_H_ + +#include <stdbool.h> +#include <stddef.h> +#include <stdint.h> + +static inline void outb(uint16_t port, uint8_t val) { + asm volatile ("outb %0, %1" : : "a"(val), "Nd"(port) : "memory"); +} + +static inline uint8_t inb(uint16_t port) { + uint8_t ret; + asm volatile ("inb %1, %0" : "=a"(ret) : "Nd"(port) : "memory"); + return ret; +} + +static inline void io_wait(void) { + outb(0x80, 0); +} + +#endif |