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-rw-r--r--contrib/syslinux/latest/com32/lib/vdprintf.c116
1 files changed, 0 insertions, 116 deletions
diff --git a/contrib/syslinux/latest/com32/lib/vdprintf.c b/contrib/syslinux/latest/com32/lib/vdprintf.c
deleted file mode 100644
index d74f278..0000000
--- a/contrib/syslinux/latest/com32/lib/vdprintf.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * vdprintf.c
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <inttypes.h>
-#include <sys/io.h>
-#include <sys/cpu.h>
-
-#undef DEBUG
-#define DEBUG 1
-#include <dprintf.h>
-
-#define BUFFER_SIZE 4096
-
-enum serial_port_regs {
- THR = 0,
- RBR = 0,
- DLL = 0,
- DLM = 1,
- IER = 1,
- IIR = 2,
- FCR = 2,
- LCR = 3,
- MCR = 4,
- LSR = 5,
- MSR = 6,
- SCR = 7,
-};
-
-#ifndef DEBUG_PORT
-# define DEBUG_PORT 0x03f8 /* I/O base address */
-#endif
-
-static const uint16_t debug_base = DEBUG_PORT;
-
-static void debug_putc(char c)
-{
- if (c == '\n')
- debug_putc('\r');
-
- while ((inb(debug_base + LSR) & 0x20) == 0)
- cpu_relax();
- outb(c, debug_base + THR);
-}
-
-void vdprintf(const char *format, va_list ap)
-{
- int rv;
- char buffer[BUFFER_SIZE];
- char *p;
- static bool debug_init = false;
- static bool debug_ok = false;
-
- rv = vsnprintf(buffer, BUFFER_SIZE, format, ap);
-
- if (rv < 0)
- return;
-
- if (rv > BUFFER_SIZE - 1)
- rv = BUFFER_SIZE - 1;
-
- /*
- * This unconditionally outputs to a serial port at 0x3f8 regardless of
- * if one is enabled or not (this means we don't have to enable the real
- * serial console and therefore get conflicting output.)
- */
- if (__unlikely(!debug_init)) {
- uint8_t dll, dlm, lcr;
-
- debug_init = true;
-
- cli();
-
- /* Initialize the serial port to 115200 n81 with FIFOs enabled */
- outb(0x83, debug_base + LCR);
- outb(0x01, debug_base + DLL);
- outb(0x00, debug_base + DLM);
- (void)inb(debug_base + IER); /* Synchronize */
- dll = inb(debug_base + DLL);
- dlm = inb(debug_base + DLM);
- lcr = inb(debug_base + LCR);
-
- outb(0x03, debug_base + LCR);
- (void)inb(debug_base + IER); /* Synchronize */
-
- outb(0x00, debug_base + IER);
- (void)inb(debug_base + IER); /* Synchronize */
-
- sti();
-
- if (dll != 0x01 || dlm != 0x00 || lcr != 0x83) {
- /* No serial port present */
- return;
- }
-
- outb(0x01, debug_base + FCR);
- (void)inb(debug_base + IER); /* Synchronize */
- if (inb(debug_base + IIR) < 0xc0) {
- outb(0x00, debug_base + FCR); /* Disable non-functional FIFOs */
- (void)inb(debug_base + IER); /* Synchronize */
- }
-
- debug_ok = true;
- }
-
- if (!debug_ok)
- return;
-
- p = buffer;
- while (rv--)
- debug_putc(*p++);
-}