From 06e382afcbf199e5e4ec92574a3872ab04fb6e9e Mon Sep 17 00:00:00 2001
From: Michal Idziorek <m.i@gmx.at>
Date: Thu, 4 Sep 2014 15:16:13 +0200
Subject: Improved physical memory manager and cleaning up.

---
 kernel/kernel.c | 105 ++++++++++++++++----------------------------------------
 1 file changed, 29 insertions(+), 76 deletions(-)

(limited to 'kernel/kernel.c')

diff --git a/kernel/kernel.c b/kernel/kernel.c
index 0b87b64..1688017 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -11,18 +11,10 @@
 #include "floppy.h"
 #endif
 
-///////
-// interrupt handler prototypes
-// todo: move somewhere else!?
-void int_clock_handler();
-void int_kb_handler();
 
-
-uint32_t read_eip();
+// some multiprocessor shit that should move away
 uint32_t c1,c2,c3;
-
 volatile uint8_t proc;
-
 uint32_t cpu_counter[SMP_MAX_PROC];
 
 void kernel_ap()
@@ -31,6 +23,7 @@ void kernel_ap()
 	uint8_t p=proc;
 	while(1)cpu_counter[p]++;
 }
+
 //
 // KERNEL MAIN 
 
@@ -52,29 +45,18 @@ void kernel_main(uint32_t initial_stack, int mp)
 
     proc=c1=c2=c3=0;
     for(int i=0;i<SMP_MAX_PROC;i++)cpu_counter[i]=0;
+    
+/////////////////// BULLSHIT ABOVE THIS LINE: TODO: CLEANUP
 
+    // 
+    // system time
+    //
     task_system_clock=0;
-
-    // move the foolfont and aps code before it gets overwritten!	
-    uint8_t *source=0x16600;
-    uint8_t *dest=0x80000;
-
-    for(int i=0;i<2*512;i++)
-    {
-	dest[i]=source[i];
-    }
-
-    source=0x16400;
-    dest=0x9000;
-    for(int i=0;i<1*512;i++)
-    {
-	dest[i]=source[i];
-    }
-
-
     
-    /////////////////// BULLSHIT ABOVE THIS LINE: TODO: CLEANUP
-
+    //
+    // init system log ringbugger
+    // 
+    log_init();
 
     // 
     // We want to get output to the screen as fast as possible!
@@ -86,7 +68,7 @@ void kernel_main(uint32_t initial_stack, int mp)
     //
     //	* the addresses of the vbeinfo struct
     //	* the address of the vbemodeinfo struct (for selected mode).
-    //	* the address of our Fool-Font binary data.
+    //	* Fool Font loaded inside ramimage
     //
     //	The first two paramters are hardcoded in [boot/mbr.asm],
     //	while the last one is set in the Makefile. The font binary
@@ -96,26 +78,20 @@ void kernel_main(uint32_t initial_stack, int mp)
     //  our video memory 
     //
 
-   //uint32_t vesa_physbase=vesa_init(0x8300,0x8400,0x7600);
-    uint32_t vesa_physbase=vesa_init(0x8300,0x8400,0x80000);
-
+    uint32_t vesa_physbase=vesa_init(0x8300,0x8400,0x90000);
 
-    char *ramdisk=0x80400;
-    log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"ramdisk: %s",ramdisk);
+    // self-log message of logger :P
+    log_log();
 
     //
     // Print initial address of the esp stack pointer
     //
-
     log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"initial esp: 0x%08X",initial_stack);
 
 
     //
     //  Setup PIC
     //
-    //  Do we nee this when using APIC?
-    //
-
     log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"setting up PIC.");
     pic_setup();
 
@@ -123,42 +99,23 @@ void kernel_main(uint32_t initial_stack, int mp)
     //
     // Configuring the PIT timer.
     //
-    
     timer_init();
 
-
     //
-    // Interrupts
+    // Setup Interrupts (code segment: 0x08)
     //
-
-    // init and interrupt decriptor table 
     int_init(0x08);
 
-    // set default interrupts
-    int_install();
-
-    // setup some custom interrupts
-    // remember that we shifted all interrupts with the pic by 32
-
-    // install PIT interrupt handler (irq 0 => 32)
-    int_install_ir(32, 0b10001110, 0x08,&int_clock_handler);
-
-    // install keyboard interrupt handler (irq 1 => 33)
-    int_install_ir(33, 0b10001110, 0x08,&int_kb_handler);
-
-#ifdef FOOLOS_COMPILE_FLOPPY
-    // install floppy interrupt handler (irq 6 => 38)
-    int_install_ir(38, 0b10001110, 0x08,&int_floppy_handler);
-#endif
-
-    // now we can enable interrupts back again
-    x86_int_enable();
 
     //
     //	Memory Init
     //
+    //  after this is set up we can allocate and deallocate blocks
+    //  of physical memory :)
+    //
 
-    // we know that here, the bootloader placed the mamory map!
+    // we know that here, the bootloader placed the mamory map and
+    // number of entries.
     mem_init(0x7c00+0x400,*((uint16_t *)(0x7c00+0x600)));
 
 
@@ -174,13 +131,13 @@ void kernel_main(uint32_t initial_stack, int mp)
 	    panic(FOOLOS_MODULE_NAME,"ACPI and MP search failed! I do not want to continue!");
 
     // Start the other Processors (also before paging !)
-    smp_start_aps(&procdata);
+    //smp_start_aps(&procdata);
 	
 
     /////////////////////
 
     // paging  (pass the vesa physbase address for identity mapping)
-    //vmem_init(vesa_physbase);
+    // vmem_init(vesa_physbase);
 
     //////////////////////
 
@@ -190,17 +147,15 @@ void kernel_main(uint32_t initial_stack, int mp)
     // We are interested in the E1000 Network Adapter in particular
     // Its driver will be hopefully implemented one day ;)
     //
-
-    pci_init();
+    // pci_init();
 
 
     //
-    // Initialize Floppy Disk
-    //
-    
-    #ifdef FOOLOS_COMPILE_FLOPPY
-    floppy_init();
-    #endif
+    // Initialize Floppy Disk if activated in config.h
+    // 
+    //#ifdef FOOLOS_COMPILE_FLOPPY
+    //floppy_init();
+    //#endif
 
 
     // 
@@ -209,7 +164,6 @@ void kernel_main(uint32_t initial_stack, int mp)
     // Will process input from the keyboard but will be completely
     // redesigned soon.
     //
-    
     shell_init();
 
 
@@ -219,7 +173,6 @@ void kernel_main(uint32_t initial_stack, int mp)
     // For now this starts two tasks which are scheduled 
     // round robin style.
     //
-
     task_init();
 
     
-- 
cgit v1.2.3