From 457a2117706cdaee34f894e67c89da7bf29f6143 Mon Sep 17 00:00:00 2001
From: Loic Guegan <manzerbredes@mailbox.org>
Date: Mon, 12 Apr 2021 10:28:04 +0200
Subject: Refactoring

---
 src/drivers/8042.c        | 16 ++++++++++++
 src/drivers/8042.h        | 64 +++++++++++++++++++++++++++++++++++++++++++++++
 src/drivers/framebuffer.c | 58 ++++++++++++++++++++++++++++++++++++++++++
 src/drivers/framebuffer.h | 35 ++++++++++++++++++++++++++
 src/drivers/pic.c         | 28 +++++++++++++++++++++
 src/drivers/pic.h         |  9 +++++++
 6 files changed, 210 insertions(+)
 create mode 100644 src/drivers/8042.c
 create mode 100644 src/drivers/8042.h
 create mode 100644 src/drivers/framebuffer.c
 create mode 100644 src/drivers/framebuffer.h
 create mode 100644 src/drivers/pic.c
 create mode 100644 src/drivers/pic.h

(limited to 'src/drivers')

diff --git a/src/drivers/8042.c b/src/drivers/8042.c
new file mode 100644
index 0000000..c6d3f22
--- /dev/null
+++ b/src/drivers/8042.c
@@ -0,0 +1,16 @@
+#include "8042.h"
+#include "drivers/framebuffer.h"
+#include "core/asm.h"
+
+DEFINE_AZERTY;
+
+void _8042_keypress(){
+    u8 data;
+    do {
+        inb(0x64,data);
+    }
+    while((data&0x01) == 0);
+    inb(0x60,data);
+    if(data<0x80)
+        putchar(AZERTY[data]);
+}
diff --git a/src/drivers/8042.h b/src/drivers/8042.h
new file mode 100644
index 0000000..5e61ffd
--- /dev/null
+++ b/src/drivers/8042.h
@@ -0,0 +1,64 @@
+#ifndef _8042_H
+#define _8042_H
+
+#include "core/types.h"
+
+void _8042_keypress();
+
+#define DEFINE_AZERTY char AZERTY[]={\
+    '\0',\
+    '\0',\
+    '&',\
+    '\0',\
+    '"',\
+    '\'',\
+    '(',\
+    '-',\
+    '\0',\
+    '_',/* 10 */\
+    '\0',\
+    '\0',\
+    ')',\
+    '=',\
+    '\0',\
+    '\t',\
+    'a',\
+    'z',\
+    'e',\
+    'r',\
+    't',\
+    'y',\
+    'u',\
+    'i',\
+    'o',\
+    'p',\
+    '^',\
+    '$',\
+    '\0',\
+    '\0',\
+    'q',/* 0x1E (30) */\
+    's',\
+    'd',\
+    'f',\
+    'g',\
+    'h',\
+    'j',\
+    'k',\
+    'l',\
+    'm',\
+    '\0',\
+    '\0',\
+    '\0',\
+    '*',\
+    'w',\
+    'x',\
+    'c',\
+    'v',\
+    'b',/* 0x30 (48) */\
+    'n',\
+    ',',\
+    ';',\
+    ':',\
+}
+
+#endif
\ No newline at end of file
diff --git a/src/drivers/framebuffer.c b/src/drivers/framebuffer.c
new file mode 100644
index 0000000..110dc73
--- /dev/null
+++ b/src/drivers/framebuffer.c
@@ -0,0 +1,58 @@
+#include "framebuffer.h"
+
+#define MAX_COL 80
+#define MAX_LINE 25
+
+VIDEO_STATE VS={
+  (u8 *)0xB8000,
+  0,
+  0,
+  BLACK,
+  GRAY,
+};
+
+void putchar(char c){
+  // Handle newline here
+  if(c=='\n'){
+    VS.col=0;
+    VS.line+=1;
+    if(VS.line>=MAX_LINE){
+      VS.line=MAX_LINE-1;
+      scrollup();
+    }
+    return;
+  }
+  
+  // Print char
+  VS.mem[VS.col*2+MAX_COL*VS.line*2]=c;
+  VS.mem[VS.col*2+MAX_COL*VS.line*2+1]=VS.fg|VS.bg<<4;
+  
+  // Refresh location
+  VS.col+=1;
+  if(VS.col>= MAX_COL){
+    VS.col=0;
+    VS.line+=1;
+    if(VS.line>=MAX_LINE){
+      VS.line=MAX_LINE-1;
+      scrollup();
+    }
+  }
+}
+
+void clear(){
+  for(char i=0;i<MAX_LINE;i++){
+    scrollup();
+  }
+}
+
+void scrollup(){
+  // Move VS.line up
+  for(char i=1;i<=MAX_LINE;i++){
+    for(char j=0;j<=MAX_COL;j++)
+      VS.mem[j*2+MAX_COL*(i-1)*2]=VS.mem[j*2+MAX_COL*i*2];
+  }
+  // Clear last VS.line
+  for(char i=0;i<=MAX_COL;i++){
+    VS.mem[i*2+MAX_COL*(MAX_LINE-1)*2]='\0';
+  }
+}
diff --git a/src/drivers/framebuffer.h b/src/drivers/framebuffer.h
new file mode 100644
index 0000000..d265015
--- /dev/null
+++ b/src/drivers/framebuffer.h
@@ -0,0 +1,35 @@
+#ifndef FRAMEBUFFER_H
+#define FRAMEBUFFER_H
+
+#include "core/types.h"
+
+typedef enum VIDEO_COLORS {
+  BLACK=0, BLUE=1, GREEN=2,CYAN=3, RED=4,PURPLE=5,BROWN=6,GRAY=7,
+  DARK_GRAY=8,LIGHT_BLUE=9,LIGHT_GREEN=10,LIGHT_CYAN=11,LIGHT_RED=12,LIGHT_PURPLE=13,YELLOW=14,WHITE=15
+  
+} VIDEO_COLORS;
+
+typedef struct VIDEO_STATE {
+  u8 *mem;
+  u8 col;
+  u8 line;
+  u8 bg;
+  u8 fg;
+} VIDEO_STATE;
+
+/**
+ * Print char
+ */
+void putchar(char);
+
+/**
+ * Scroll the framebuffer from one line
+ */
+void scrollup();
+
+/**
+ * Clear all char from the framebuffer
+ */
+void clear();
+
+#endif
diff --git a/src/drivers/pic.c b/src/drivers/pic.c
new file mode 100644
index 0000000..d509e1d
--- /dev/null
+++ b/src/drivers/pic.c
@@ -0,0 +1,28 @@
+#include "pic.h"
+#include "core/asm.h"
+#include "core/mem.h"
+#include "core/syscall.h"
+
+void pic_init(){
+    
+    // ICW1: Initialisation
+    outbj(0x20,0x11); // Master
+    outbj(0xA0,0x11); // Slave
+
+    // ICW2: Map IRQ index to entry into the IDT
+    outbj(0x21,0x20); // Start interrupt at offset 0x20 in IDT (index 32)
+    outbj(0xA1,0x70); // Start interrupt at offset 0x50 in IDT (index 80)
+
+    // ICW3: Indicate the connection between master and slave
+    outbj(0x21,0x02); // Slave connected to pin 2
+    outbj(0xA1,0x01); // Indicate pin id to the slave (2-1)
+
+    // ICW4: Operating mode
+    outbj(0x21,0x01); // Default operating mode
+    outbj(0xA1,0x01); // Default operating mode
+
+    // OCW: Masking
+    outbj(0x21,0b11111100);
+}
+
+
diff --git a/src/drivers/pic.h b/src/drivers/pic.h
new file mode 100644
index 0000000..19e0f5c
--- /dev/null
+++ b/src/drivers/pic.h
@@ -0,0 +1,9 @@
+#ifndef PIC_H
+#define PIC_H
+
+/**
+ * Configure 
+ */
+void pic_init();
+
+#endif
\ No newline at end of file
-- 
cgit v1.2.3