kern: cons: Finish string writing logic

- Wrap on X overflow
- Wrap on Y overflow
- Keep track of max console width and height
- Add console enable/disable control

Signed-off-by: Ian Moffett <ian@osmora.org>

2 files changed, 17 insertions, 0 deletions

diff --git a/src/sys/os/os_init.c b/src/sys/os/os_init.c
index 66e8aca..b56ab94 100644
--- a/src/sys/os/os_init.c
+++ b/src/sys/os/os_init.c
@@ -18,6 +18,7 @@ main(void)
 
     vm_init();
     cons_init();
+    syslog_toggle(true);
 
     panic("end of kernel reached\n");
     for (;;);
diff --git a/src/sys/os/os_syslog.c b/src/sys/os/os_syslog.c
index b0e07dc..b6d30b7 100644
--- a/src/sys/os/os_syslog.c
+++ b/src/sys/os/os_syslog.c
@@ -30,10 +30,18 @@
 #include <sys/types.h>
 #include <machine/uart.h>   /* shared */
 #include <sys/syslog.h>
+#include <io/cons/cons.h>
 #include <os/spinlock.h>
 #include <string.h>
 #include <stdarg.h>
 
+/*
+ * If this value is true, data will be written to
+ * the video console, otherwise only serial logging
+ * will be used.
+ */
+static bool cons_enabled = false;
+
 static void
 syslog_write(const char *str, size_t len)
 {
@@ -41,6 +49,8 @@ syslog_write(const char *str, size_t len)
 
     spinlock_acquire(&lock);
     for (int i = 0; i < len; ++i) {
+        if (cons_enabled)
+            cons_putstr(&g_root_scr, str, 1);
         uart_write(*str++);
     }
     spinlock_release(&lock);
@@ -64,3 +74,9 @@ printf(const char *fmt, ...)
     vprintf(fmt, &ap);
     va_end(ap);
 }
+
+void
+syslog_toggle(bool enable)
+{
+    cons_enabled = enable;
+}