[coreboot] [PATCH] v3: fix initial printk buffer address initialization

[Carl-Daniel Hailfinger]

Fix initial printk buffer address initialization. This was broken in
r785 (move from explicit asm to implicit C) and unfortunately qemu never
triggered the bug, only real hardware did.

Thanks to Ron for bisecting this.

Signed-off-by: Carl-Daniel Hailfinger

Index: corebootv3-printk_buffer_addr_init/lib/console.c
===================================================================
--- corebootv3-printk_buffer_addr_init/lib/console.c	(Revision 856)
+++ corebootv3-printk_buffer_addr_init/lib/console.c	(Arbeitskopie)
@@ -82,7 +82,9 @@

void printk_buffer_init(void)
 {
-	struct printk_buffer *buf = printk_buffer_addr();
+	struct printk_buffer *buf = (struct printk_buffer *)PRINTK_BUF_ADDR_CAR;
+	global_vars()->printk_buffer = buf;
+	buf = printk_buffer_addr();
    buf->len = PRINTK_BUF_SIZE_CAR - sizeof(struct printk_buffer);
    buf->readoffset = 0;
    buf->writeoffset = 0;