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| author | Jon Santmyer <jon@jonsantmyer.com> | 2024-03-11 21:30:31 -0400 |
|---|---|---|
| committer | Jon Santmyer <jon@jonsantmyer.com> | 2024-03-11 21:30:31 -0400 |
| commit | d1ff7bcc91886626dc9060ec5fb67ee102ab7c1d (patch) | |
| tree | 8f0b5cd8aad31089131785dc6e37b659490f9955 /arch/x86_64/serial.h | |
| download | jove-kernel-d1ff7bcc91886626dc9060ec5fb67ee102ab7c1d.tar.gz jove-kernel-d1ff7bcc91886626dc9060ec5fb67ee102ab7c1d.tar.bz2 jove-kernel-d1ff7bcc91886626dc9060ec5fb67ee102ab7c1d.zip | |
usermode capable kernel with logging syscall
Diffstat (limited to 'arch/x86_64/serial.h')
| -rw-r--r-- | arch/x86_64/serial.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/x86_64/serial.h b/arch/x86_64/serial.h new file mode 100644 index 0000000..ecb896d --- /dev/null +++ b/arch/x86_64/serial.h @@ -0,0 +1,27 @@ +#ifndef JOVE_KERNEL_ARCH_x86_64_SERIAL_H +#define JOVE_KERNEL_ARCH_x86_64_SERIAL_H 1 + +#include <stdbool.h> +#include <stddef.h> + +#define SERIAL_UART_COM1 0x3F8 +#define SERIAL_UART_COM2 0x2F8 + +#define SERIAL_UART_COM_THR(COM) COM +#define SERIAL_UART_COM_RBR(COM) COM +#define SERIAL_UART_COM_DLAB_DLL(COM) COM +#define SERIAL_UART_COM_IER(COM) (COM + 1) +#define SERIAL_UART_COM_DLAB_DLH(COM) (COM + 1) +#define SERIAL_UART_COM_IIR(COM) (COM + 2) +#define SERIAL_UART_COM_FCR(COM) (COM + 2) +#define SERIAL_UART_COM_LCR(COM) (COM + 3) +#define SERIAL_UART_COM_MCR(COM) (COM + 4) +#define SERIAL_UART_COM_LSR(COM) (COM + 5) +#define SERIAL_UART_COM_MSR(COM) (COM + 6) +#define SERIAL_UART_COM_SR(COM) (COM + 7) + +extern bool serial_supported; + +void serial_out(const char *s, size_t len); + +#endif |