From f90c075d5061b3a89316d6bf3d5b190d49049ccd Mon Sep 17 00:00:00 2001
From: Brett Weiland <brett_weiland@bpcspace.com>
Date: Wed, 24 Mar 2021 15:42:20 -0500
Subject: 	renamed:    kernel/include/acpi.h -> include/acpi.h 
 renamed:    kernel/include/libc.h -> include/libc.h 	renamed:   
 kernel/include/paging.h -> include/paging.h 	renamed:   
 kernel/include/printf.h -> include/printf.h 	renamed:   
 kernel/include/serial.h -> include/serial.h 	renamed:   
 kernel/include/video.h -> include/video.h 	new file:   indigo_os 
 renamed:    kernel/libs/acpi.c -> kernel/acpi.c 	renamed:   
 kernel/libs/drivers/serial.c -> kernel/drivers/serial.c 	renamed:   
 kernel/libs/drivers/video.c -> kernel/drivers/video.c 	renamed:   
 kernel/libs/libc.c -> kernel/libc.c 	renamed:    kernel/libs/page.c ->
 kernel/page.c 	renamed:    kernel/libs/printf.c -> kernel/printf.c 
 renamed:    kernel/libs/printf.h -> kernel/printf.h 	modified:   makefile

---
 src/kernel/drivers/serial.c | 39 +++++++++++++++++++++++++++++++++++++++
 src/kernel/drivers/video.c  |  9 +++++++++
 2 files changed, 48 insertions(+)
 create mode 100644 src/kernel/drivers/serial.c
 create mode 100644 src/kernel/drivers/video.c

(limited to 'src/kernel/drivers')

diff --git a/src/kernel/drivers/serial.c b/src/kernel/drivers/serial.c
new file mode 100644
index 0000000..25f89ad
--- /dev/null
+++ b/src/kernel/drivers/serial.c
@@ -0,0 +1,39 @@
+#include <stdint.h>
+#include <serial.h>
+static inline void outb(uint16_t port, uint8_t value) {
+  asm volatile(
+      "outb %0, %1" :: "a"(value), "Nd"(port)
+      );
+}
+
+static inline uint8_t inb(uint16_t port) {
+  uint8_t ret;
+  asm volatile(
+      "inb %1, %0" : "=a"(ret) : "Nd"(port)
+      );
+  return(ret);
+}
+
+int init_serial(uint16_t port) {
+  outb(port + 1, 0x00); 
+  outb(port + 3, 0x80); 
+  outb(port + 0, 0x06); 
+  outb(port + 1, 0x00);
+  outb(port + 3, 0x03); 
+  outb(port + 2, 0xc7); 
+  outb(port + 4, 0x0b); 
+  outb(port + 4, 0x1e); 
+
+  outb(port + 0, 0xae); // test char
+
+  if(inb(port + 0) != 0xae)
+    return 1;
+
+  outb(port + 4, 0x0f); // dissable interupts
+  return 0;
+}
+
+void _putchar_serial(uint16_t port, char msg) {
+  while(!(inb(port + 5) & 0x20)); //wait for transmit to be done
+  outb(port, msg);
+}
diff --git a/src/kernel/drivers/video.c b/src/kernel/drivers/video.c
new file mode 100644
index 0000000..ab73bb0
--- /dev/null
+++ b/src/kernel/drivers/video.c
@@ -0,0 +1,9 @@
+#include <printf.h>
+#include <video.h>
+
+//to be implimented when paging is set up
+
+void dump_video() {
+  struct mode_info *video = (struct mode_info *)0x600;
+  printf("Video info:\nx:\t%u\ny:\t%u\nbbp:\t%u\nloc:\t0x%p\n", video->width, video->height, video->bpp, video->framebuffer);
+}
-- 
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