Merge branch 'master' of git://git.denx.de/u-boot

1 files changed, 60 insertions, 0 deletions

diff --git a/common/init/board_init.c b/common/init/board_init.c
new file mode 100644
index 0000000..e74b63b
--- /dev/null
+++ b/common/init/board_init.c
@@ -0,0 +1,60 @@
+/*
+ * Code shared between SPL and U-Boot proper
+ *
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * It isn't trivial to figure out whether memcpy() exists. The arch-specific
+ * memcpy() is not normally available in SPL due to code size.
+ */
+#if !defined(CONFIG_SPL_BUILD) || \
+		(defined(CONFIG_SPL_LIBGENERIC_SUPPORT) && \
+		!defined(CONFIG_USE_ARCH_MEMSET))
+#define _USE_MEMCPY
+#endif
+
+/* Unfortunately x86 can't compile this code as gd cannot be assigned */
+#ifndef CONFIG_X86
+__weak void arch_setup_gd(struct global_data *gd_ptr)
+{
+	gd = gd_ptr;
+}
+#endif /* !CONFIG_X86 */
+
+ulong board_init_f_mem(ulong top)
+{
+	struct global_data *gd_ptr;
+#ifndef _USE_MEMCPY
+	int *ptr;
+#endif
+
+	/* Leave space for the stack we are running with now */
+	top -= 0x40;
+
+	top -= sizeof(struct global_data);
+	top = ALIGN(top, 16);
+	gd_ptr = (struct global_data *)top;
+#ifdef _USE_MEMCPY
+	memset(gd_ptr, '\0', sizeof(*gd));
+#else
+	for (ptr = (int *)gd_ptr; ptr < (int *)(gd_ptr + 1); )
+		*ptr++ = 0;
+#endif
+	arch_setup_gd(gd_ptr);
+
+#if defined(CONFIG_SYS_MALLOC_F) && \
+	(!defined(CONFIG_SPL_BUILD) || !defined(CONFIG_SYS_SPL_MALLOC_START))
+	top -= CONFIG_SYS_MALLOC_F_LEN;
+	gd->malloc_base = top;
+#endif
+
+	return top;
+}