ARM: Add an ARMv4 architecture version.

This is needed for the tegra124's bootblock and includes enough implementation
to support that use. No caching is supported, although there are function
prototypes and stub implementations to satisfy includes and linking.

Change-Id: Ib79dde8c30eda98b3e823cba2ff6115a610bb2e8
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/171401
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 221dc76b3ce4c1d73851c432333e091e1c60f0cb)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6783
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

1 files changed, 63 insertions, 0 deletions

diff --git a/src/arch/arm/armv4/Makefile.inc b/src/arch/arm/armv4/Makefile.inc
new file mode 100644
index 0000000000..d054b31e4e
--- /dev/null
+++ b/src/arch/arm/armv4/Makefile.inc
@@ -0,0 +1,63 @@
+################################################################################
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2013 The ChromiumOS Authors
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; version 2 of the License.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+##
+###############################################################################
+
+armv4_flags = -marm -march=armv4t -I$(src)/arch/arm/include/armv4/
+
+###############################################################################
+# bootblock
+###############################################################################
+
+ifeq ($(CONFIG_ARCH_BOOTBLOCK_ARMV4),y)
+
+ifneq ($(CONFIG_ARM_BOOTBLOCK_CUSTOM),y)
+bootblock-y += bootblock.S
+bootblock-y += bootblock_simple.c
+endif
+
+bootblock-y += cache.c
+
+CFLAGS_bootblock += $(armv4_flags)
+CPPFLAGS_bootblock += $(armv4_flags)
+
+endif # CONFIG_ARCH_BOOTBLOCK_ARMV4
+
+###############################################################################
+# romstage
+###############################################################################
+
+ifeq ($(CONFIG_ARCH_ROMSTAGE_ARMV4),y)
+
+
+CFLAGS_romstage += $(armv4_flags)
+CPPFLAGS_romstage += $(armv4_flags)
+
+endif # CONFIG_ARCH_ROMSTAGE_ARMV4
+
+###############################################################################
+# ramstage
+###############################################################################
+
+ifeq ($(CONFIG_ARCH_RAMSTAGE_ARMV4),y)
+
+CFLAGS_ramstage += $(armv4_flags)
+CPPFLAGS_ramstage += $(armv4_flags)
+
+endif # CONFIG_ARCH_RAMSTAGE_ARMV4