From d1ff7bcc91886626dc9060ec5fb67ee102ab7c1d Mon Sep 17 00:00:00 2001 From: Jon Santmyer Date: Mon, 11 Mar 2024 21:30:31 -0400 Subject: usermode capable kernel with logging syscall --- arch/x86_64/serial.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 arch/x86_64/serial.h (limited to 'arch/x86_64/serial.h') 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 +#include + +#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 -- cgit v1.2.1