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-rw-r--r--kernel/kernel.c27
-rw-r--r--kernel/keyboard.c12
-rw-r--r--kernel/keyboard.h1
-rw-r--r--kernel/mem.c41
-rw-r--r--kernel/mem.h2
-rw-r--r--kernel/spinlock.c20
-rw-r--r--kernel/spinlock.h9
-rw-r--r--kernel/timer.c4
-rw-r--r--kernel/timer.h2
9 files changed, 57 insertions, 61 deletions
diff --git a/kernel/kernel.c b/kernel/kernel.c
index 0c14e56..ecb42eb 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -29,7 +29,6 @@
#include <stdint.h>
#include <stdlib.h>
-
// CODE FOR Stack Smashing Protector, TODO: MOVE / and do not duplicate
// with sys.c
// http://wiki.osdev.org/Stack_Smashing_Protector
@@ -47,11 +46,17 @@ void __stack_chk_fail(void)
{
panic(FOOLOS_MODULE_NAME,"Stack smashing detected");
}
+//
// mp informs us if this if this is the main processor
void kernel_main(uint32_t initial_stack, int mp)
{
//
+ // Configuring the PIT timer.
+ //
+ timer_init();
+
+ //
// Memory Init
//
// after this is set up we will be able to allocate and deallocate
@@ -63,11 +68,6 @@ void kernel_main(uint32_t initial_stack, int mp)
mem_init(0xa001,*((uint16_t *)(0xa000)));
//
- // Configuring the PIT timer.
- //
- timer_init();
-
- //
// Activate Virtual Memory (paging)
//
vmem_init();
@@ -84,19 +84,14 @@ void kernel_main(uint32_t initial_stack, int mp)
//
// Setup PIC (interrupts)
- //
+ // TODO: log!
pic_setup();
-
- // mouse and kb driver init (before interrupts)
- // mouse_init();
- keyboard_init();
-
-
//
// Setup Interrupts (code segment: 0x08)
//
int_init(0x08);
+
//
// Gather Info about other processors. (APs)
@@ -112,12 +107,6 @@ void kernel_main(uint32_t initial_stack, int mp)
panic(FOOLOS_MODULE_NAME,"ACPI and MP search failed! I do not want to continue!");
*/
- // init spinlocks
- init_spinlocks();
-
-
- // ringbuffer for stdin!
- ringbuffer_init();
// load and run foolshell
// we will come back into the kernel only on interrupts...
diff --git a/kernel/keyboard.c b/kernel/keyboard.c
index 074c495..32f28f0 100644
--- a/kernel/keyboard.c
+++ b/kernel/keyboard.c
@@ -11,15 +11,9 @@
/// keyboard driver ////
// http://www.computer-engineering.org/ps2keyboard/scancodes1.html
-static bool shift_l;
-static bool shift_r;
-static bool capslock;
-
-void keyboard_init()
-{
- shift_l=shift_r=capslock=false; //!!
-}
-
+static bool shift_l=false;
+static bool shift_r=false;
+static bool capslock=false;
void keyboard_handle(uint8_t in)
{
diff --git a/kernel/keyboard.h b/kernel/keyboard.h
index 0b3bf28..8b13789 100644
--- a/kernel/keyboard.h
+++ b/kernel/keyboard.h
@@ -1,2 +1 @@
-void keyboard_init();
diff --git a/kernel/mem.c b/kernel/mem.c
index b2ab6ad..cf0c673 100644
--- a/kernel/mem.c
+++ b/kernel/mem.c
@@ -1,7 +1,8 @@
#define FOOLOS_MODULE_NAME "mem"
+#include <stdint.h>
+
#include "config.h"
-#include "lib/int/stdint.h"
#include "lib/logger/log.h" // logger facilities
//! 8 blocks per byte
@@ -13,12 +14,20 @@
//! block alignment ??? TODO: what is this!?
#define PMMNGR_BLOCK_ALIGN PMMNGR_BLOCK_SIZE
+
//memory map bit array. Each bit represents a 4KB memory block
static uint32_t *_mmngr_memory_map;
-
static uint32_t mem_free_blocks;
static uint32_t mem_array_size;
+char *memmap_type_to_string[]=
+ {
+ "Usable",
+ "Reserved",
+ "ACPI reclaimable",
+ "ACPI NVS",
+ "Bad Memory"
+ };
// bit funcs!
void mmap_set(int bit)
{
@@ -34,10 +43,13 @@ int mmap_test(int bit)
{
return _mmngr_memory_map[bit / 32] & (1 << (bit % 32));
}
+//
+// By default, Set all of memory is in use
void pmmngr_init ()
{
- // By default, all of memory is in use
+ mem_free_blocks=0;
+
for(int i=0;i<mem_array_size;i++)
{
_mmngr_memory_map[i]=0xffffffff;
@@ -57,6 +69,7 @@ int mmap_first_free ()
return -1;
}
+/*
//find the first free consecutive x bits
int mmap_first_free_s (uint32_t x)
{
@@ -73,6 +86,7 @@ int mmap_first_free_s (uint32_t x)
return -1;
}
+*/
void pmmngr_init_region (uint32_t base, uint32_t size)
{
@@ -96,7 +110,6 @@ void pmmngr_deinit_region (uint32_t base, uint32_t size)
mmap_set (align++);
mem_free_blocks--;
}
-
}
void* pmmngr_alloc_block ()
@@ -116,6 +129,7 @@ void* pmmngr_alloc_block ()
return (void*)addr;
}
+/*
void* pmmngr_alloc_blocks (uint32_t size)
{
@@ -138,6 +152,7 @@ void* pmmngr_alloc_blocks (uint32_t size)
return (void*)addr;
}
+*/
void pmmngr_free_block (void* p)
{
@@ -151,17 +166,14 @@ void pmmngr_free_block (void* p)
}
}
+
void mem_init(uint16_t *memmap,uint16_t entries)
{
-
- // init free blocks counter
- mem_free_blocks=0;
+ // log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"the memory map contains %d entries.",entries);
// count available mem
uint32_t total_mem=0, highest_end=0, high_end_low=0,last_end=0;
- log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"the memory map contains %d entries.",entries);
-
// preserve pointer
uint16_t save=memmap;
@@ -173,10 +185,11 @@ void mem_init(uint16_t *memmap,uint16_t entries)
+(((uint32_t)memmap[5])<<16)+memmap[4];
#ifdef MEM_PRINT_MEMORYMAP
- log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"type: %02d / range: 0x%08x - 0x%08x",
- memmap[8],low_end,high_end);
+ log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"range: 0x%08x - 0x%08x (%s)",
+ low_end,high_end,memmap_type_to_string[memmap[8]-1]);
#endif
+ //reclaimable OR usable
if(memmap[8]==1||memmap[8]==3)
{
total_mem+=memmap[4]+(memmap[5]<<16);
@@ -201,7 +214,6 @@ void mem_init(uint16_t *memmap,uint16_t entries)
int blocks=highest_end/4096+1;
mem_array_size=blocks/32+1;
-
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Highest end area: 0x%08X - 0x%08X",high_end_low,highest_end);
if(highest_end-high_end_low<mem_array_size*4)
{
@@ -223,8 +235,9 @@ void mem_init(uint16_t *memmap,uint16_t entries)
memmap+=12;
}
- // here is somewhere our kernel stuff ;) // TODO!! better.
- pmmngr_deinit_region(0x0,0x600000);
+ // here is somewhere our kernel stuff.
+ // reserve 4Mb (0x100000-0x500000) for kernel and ext2 img
+ pmmngr_deinit_region(0x0,0x500000);
// and here is the memory map that we JUST created!
pmmngr_deinit_region(_mmngr_memory_map,mem_array_size*4);
diff --git a/kernel/mem.h b/kernel/mem.h
index 1624a06..d574fec 100644
--- a/kernel/mem.h
+++ b/kernel/mem.h
@@ -1,6 +1,6 @@
#include "lib/int/stdint.h"
void* pmmngr_alloc_block ();
-void* pmmngr_alloc_blocks (uint32_t size);
+//void* pmmngr_alloc_blocks (uint32_t size);
void pmmngr_free_block (void* p);
void mem_init(uint16_t *memmap,uint16_t entries);
diff --git a/kernel/spinlock.c b/kernel/spinlock.c
index 33ed178..2c6d161 100644
--- a/kernel/spinlock.c
+++ b/kernel/spinlock.c
@@ -1,23 +1,23 @@
#define FOOLOS_MODULE_NAME "spinlock"
#include "lib/logger/log.h"
-#include "lib/int/stdint.h"
-#include "x86.h"
+#include "spinlock.h"
// https://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html
+#define NUMBER_SPINLOCKS 16
-typedef uint8_t spinlock;
-volatile spinlock spinlocks[16];
+spinlock spinlocks[NUMBER_SPINLOCKS];
-
-void init_spinlocks()
+void check_spinlocks()
{
- log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Initializing spinlocks at 0x%08X ",spinlocks);
- for(int i=0;i<16;i++)spinlocks[i]=0;
+ log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Spinlocks at 0x%08X ",spinlocks);
+ for(int i=0;i<NUMBER_SPINLOCKS;i++)
+ log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"%d",spinlocks[i]);
}
-volatile void lock_spin(int i)
+
+void lock_spin(spinlock i)
{
spinlock *addr=spinlocks+i;
@@ -26,7 +26,7 @@ volatile void lock_spin(int i)
while(x86_xchg(addr,1));
}
-void lock_release(int i)
+void lock_release(spinlock i)
{
// log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"unlocking %d",i);
diff --git a/kernel/spinlock.h b/kernel/spinlock.h
index 7080490..43cd82f 100644
--- a/kernel/spinlock.h
+++ b/kernel/spinlock.h
@@ -1,8 +1,11 @@
#ifndef SPINLOCK_H
#define SPINLOCK_H
-void init_spinlocks();
-volatile void lock_spin(int i);
-void lock_release(int i);
+#include <stdint.h>
+
+typedef uint8_t spinlock;
+
+volatile void lock_spin(spinlock);
+void lock_release(spinlock);
#endif
diff --git a/kernel/timer.c b/kernel/timer.c
index 956195b..676be48 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -33,11 +33,9 @@
#define FOOLOS_MODULE_NAME "timer"
#include "timer.h"
-#include "x86.h"
-#include "../lib/logger/log.h" // logger facilities
+#include "lib/logger/log.h" // logger facilities
-//static volatile
static uint64_t task_system_clock=0;
void timer_init()
diff --git a/kernel/timer.h b/kernel/timer.h
index 3b9ecdf..57ea21e 100644
--- a/kernel/timer.h
+++ b/kernel/timer.h
@@ -1,4 +1,4 @@
-#include "lib/int/stdint.h"
+#include <stdint.h>
void timer_init();
void timer_tick();
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-09 15:01:56 +0000