first shot of legacybios emulation.

does not work yet.. sorry :-(


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1119 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

util/extensions/legacybios/kernel/malloc.c

@@ -0,0 +1,35 @@
+
+// 32k heap
+
+
+void printk(const char *fmt, ...);
+#define error printk
+
+static unsigned long free_mem_ptr = 0x20000;		/* Start of heap */
+static unsigned long free_mem_end_ptr = 0x28000;	/* End of heap */
+
+
+void *malloc(unsigned int size)
+{
+	void *p;
+
+	if (size < 0)
+		error("Error! malloc: Size < 0");
+	if (free_mem_ptr <= 0)
+		error("Error! malloc: Free_mem_ptr <= 0");
+
+	free_mem_ptr = (free_mem_ptr + 3) & ~3;	/* Align */
+
+	p = (void *) free_mem_ptr;
+	free_mem_ptr += size;
+
+	if (free_mem_ptr >= free_mem_end_ptr)
+		error("Error! malloc: Free_mem_ptr >= free_mem_end_ptr");
+
+	return p;
+}
+
+void free(void *where)
+{
+	/* Don't care */
+}