cpu: Add initial support for Allwinner A10 SoC

Add minimal support needed to get a bootblock capable of initialising
a serial console.

Change-Id: I50dd85544549baf9c5ea0aa3b4296972136c02a4
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/4549
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/cpu/allwinner/a10/bootblock.c b/src/cpu/allwinner/a10/bootblock.c
new file mode 100644
index 0000000000..38fe95308f
--- /dev/null
+++ b/src/cpu/allwinner/a10/bootblock.c
@@ -0,0 +1,21 @@
+/*
+ * Allwinner A10 bootblock initialization
+ *
+ * Copyright (C) 2013 Google Inc.
+ * Copyright (C) 2013  Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ * Subject to the GNU GPL v2, or (at your option) any later version.
+ */
+
+#include <types.h>
+#include <arch/cache.h>
+
+void bootblock_cpu_init(void);
+void bootblock_cpu_init(void)
+{
+	uint32_t sctlr;
+
+	/* enable dcache */
+	sctlr = read_sctlr();
+	sctlr |= SCTLR_C;
+	write_sctlr(sctlr);
+}