VGA Z-buffer is now dynamically allocated and freed

memory management can reuse the last pointer malloced if freed again

1 files changed, 7 insertions, 6 deletions

diff --git a/src/kernel/kernel.c b/src/kernel/kernel.c
index f2210d6..c0bc285 100644
--- a/src/kernel/kernel.c
+++ b/src/kernel/kernel.c
@@ -91,13 +91,14 @@ void kernel_main( void )
 	// TODO: get memupper from multiboot header (but this needs
 	// a multiboot compliant entry function first) or use BIOS
 	// functions to determine size of memory, for now assume we
-	// have at least, for now use the memory above 1 MB, 64 MB
-	// heap is enough for what we are doing in the kernel
-	memory_manager_init( &global_context.memory_manager, 0x100000, 0xFFFF );
+	// have at least, for now use the memory above 1 MB, 128 KB
+	// heap is enough for what we are doing in the kernel plus
+	// eventual z buffering the VGA graphic mode
+	uint32_t heap_offset = 0x01000000;
+	size_t heap_size = 128 * 1024;
+	memory_manager_init( &global_context.memory_manager, heap_offset, heap_size );
 	__stdlib_set_memory_manager( &global_context.memory_manager );
-	printf( "Kernel heap at 0x%X, size 0x%X\n", 0x100000, 0xFFFF );
-	void *test = malloc( 2048 );
-	free( test );
+	printf( "Kernel heap at 0x%X, size 0x%X\n", heap_offset, heap_size );
 
 	// exit point in case of kernel panic, do this as soon as
 	// possible, as soon we have an early console we can croak on