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kernel/uart: Refactor code

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Signed-off-by: EnderIce2 <enderice2@protonmail.com>
This commit is contained in:
EnderIce2
2024-12-23 03:52:26 +02:00
parent 0807ea5a9a
commit 81af8a48cb
10 changed files with 102 additions and 249 deletions
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43
Kernel/core/debugger.cpp
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@ -27,48 +27,9 @@ NewLock(DebuggerLock);
extern bool serialports[8];
EXTERNC NIF void uart_wrapper(char c, void *unused)
EXTERNC NIF void uart_wrapper(char c, void *)
{
static int once = 0;
if (unlikely(!once++))
{
uint8_t com = inb(0x3F8);
if (com != 0xFF)
{
outb(s_cst(uint16_t, 0x3F8 + 1), 0x00); // Disable all interrupts
outb(s_cst(uint16_t, 0x3F8 + 3), 0x80); // Enable DLAB (set baud rate divisor)
outb(s_cst(uint16_t, 0x3F8 + 0), 0x1); // Set divisor to 1 (lo byte) 115200 baud
outb(s_cst(uint16_t, 0x3F8 + 1), 0x0); // (hi byte)
outb(s_cst(uint16_t, 0x3F8 + 3), 0x03); // 8 bits, no parity, one stop bit
outb(s_cst(uint16_t, 0x3F8 + 2), 0xC7); // Enable FIFO, clear them, with 14-byte threshold
outb(s_cst(uint16_t, 0x3F8 + 4), 0x0B); // IRQs enabled, RTS/DSR set
/* FIXME https://wiki.osdev.org/Serial_Ports */
// outb(s_cst(uint16_t, 0x3F8 + 0), 0x1E);
// outb(s_cst(uint16_t, 0x3F8 + 0), 0xAE);
// Check if the serial port is faulty.
// if (inb(s_cst(uint16_t, 0x3F8 + 0)) != 0xAE)
// {
// static int once = 0;
// if (!once++)
// warn("Serial port %#llx is faulty.", 0x3F8);
// // serialports[0x3F8] = false; // ignore for now
// // return;
// }
// Set to normal operation mode.
outb(s_cst(uint16_t, 0x3F8 + 4), 0x0F);
serialports[0] = true;
}
}
if (likely(serialports[0]))
{
while ((inb(s_cst(uint16_t, 0x3F8 + 5)) & 0x20) == 0)
;
outb(0x3F8, c);
}
UNUSED(unused);
uart.DebugWrite(c);
}
static inline NIF bool WritePrefix(DebugLevel Level, const char *File, int Line, const char *Function, const char *Format, va_list args)