xtensa: add support for the xtensa processor architecture [2/2]

The Xtensa processor architecture is a configurable, extensible,
and synthesizable 32-bit RISC processor core provided by Tensilica, inc.

This is the second part of the basic architecture port, adding the
'arch/xtensa' directory and a readme file.

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/arch/xtensa/include/asm/u-boot.h b/arch/xtensa/include/asm/u-boot.h
new file mode 100644
index 00000000000..cfdc0367b33
--- /dev/null
+++ b/arch/xtensa/include/asm/u-boot.h
@@ -0,0 +1,41 @@
+/*
+ * (C) Copyright 2007, Tensilica Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ ********************************************************************
+ * NOTE: This header file defines an interface to U-Boot. Including
+ * this (unmodified) header file in another file is considered normal
+ * use of U-Boot, and does *not* fall under the heading of "derived
+ * work".
+ ********************************************************************
+ */
+
+#ifndef _XTENSA_U_BOOT_H
+#define _XTENSA_U_BOOT_H
+
+#ifdef CONFIG_SYS_GENERIC_BOARD
+/* Use the generic board which requires a unified bd_info */
+#include <asm-generic/u-boot.h>
+#else
+
+#ifndef __ASSEMBLY__
+typedef struct bd_info {
+	int		bi_baudrate;	/* serial console baudrate */
+	unsigned long	bi_ip_addr;	/* IP Address */
+	unsigned char	bi_enetaddr[6];	/* Ethernet adress */
+	unsigned long	bi_boot_params;	/* where this board expects params */
+	unsigned long	bi_memstart;	/* start of DRAM memory VA */
+	unsigned long	bi_memsize;	/* size	 of DRAM memory in bytes */
+	unsigned long	bi_flashstart;	/* start of FLASH memory */
+	unsigned long	bi_flashsize;	/* size  of FLASH memory */
+	unsigned long	bi_flashoffset;	/* offset to skip UBoot image */
+} bd_t;
+#endif	/* __ ASSEMBLY__ */
+
+#endif	/* CONFIG_SYS_GENERIC_BOARD */
+
+/* For image.h:image_check_target_arch() */
+#define IH_ARCH_DEFAULT IH_ARCH_XTENSA
+
+#endif	/* _XTENSA_U_BOOT_H */