YABEL update

- drop x86emu + old biosemu in favor of YABEL
- Add YABEL_DIRECTHW to get the old biosemu behavior
- add support for vesa console using YABEL
- add coreboot table entry with console information
- add bootsplash support (reads /bootsplash.jpg from CBFS)

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Pattrick Hueper <phueper@hueper.net>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5135 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

util/x86emu/yabel/biosemu.c

@@ -86,10 +86,15 @@ biosemu(u8 *biosmem, u32 biosmem_size, struct device * dev, unsigned long rom_ad
 
 	// in case we jump somewhere unexpected, or execution is finished,
 	// fill the biosmem with hlt instructions (0xf4)
-	memset(biosmem, 0xf4, biosmem_size);
+	// But we have to be careful: If biosmem is 0x00000000 we're running
+	// in the lower 1MB and we must not wipe memory like that.
+	if (biosmem) {
+		DEBUG_PRINTF("Clearing biosmem\n");
+		memset(biosmem, 0xf4, biosmem_size);
+	}
+
+	X86EMU_setMemBase(biosmem, biosmem_size);
 
-	M.mem_base = (long) biosmem;
-	M.mem_size = biosmem_size;
 	DEBUG_PRINTF("membase set: %08x, size: %08x\n", (int) M.mem_base,
 		     (int) M.mem_size);