WIP: Initial ARMv7 architecture implementation in coreboot

The first ARMv7 CPU we're going to support is the Exynos 5250
used in the Google Snow ChromeBook.

Change-Id: I4de8433bbc6202eb8fef2556a11186a3376d411b
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2004
Tested-by: build bot (Jenkins)

1 files changed, 76 insertions, 0 deletions

diff --git a/src/arch/armv7/include/armv7.h b/src/arch/armv7/include/armv7.h
new file mode 100644
index 0000000000..dc111c17ee
--- /dev/null
+++ b/src/arch/armv7/include/armv7.h
@@ -0,0 +1,76 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ * Aneesh V <aneesh@ti.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#ifndef ARMV7_H
+#define ARMV7_H
+#include <types.h>
+
+/* Cortex-A9 revisions */
+#define MIDR_CORTEX_A9_R0P1	0x410FC091
+#define MIDR_CORTEX_A9_R1P2	0x411FC092
+#define MIDR_CORTEX_A9_R1P3	0x411FC093
+#define MIDR_CORTEX_A9_R2P10	0x412FC09A
+
+/* Cortex-A15 revisions */
+#define MIDR_CORTEX_A15_R0P0	0x410FC0F0
+
+/* CCSIDR */
+#define CCSIDR_LINE_SIZE_OFFSET		0
+#define CCSIDR_LINE_SIZE_MASK		0x7
+#define CCSIDR_ASSOCIATIVITY_OFFSET	3
+#define CCSIDR_ASSOCIATIVITY_MASK	(0x3FF << 3)
+#define CCSIDR_NUM_SETS_OFFSET		13
+#define CCSIDR_NUM_SETS_MASK		(0x7FFF << 13)
+
+/*
+ * Values for InD field in CSSELR
+ * Selects the type of cache
+ */
+#define ARMV7_CSSELR_IND_DATA_UNIFIED	0
+#define ARMV7_CSSELR_IND_INSTRUCTION	1
+
+/* Values for Ctype fields in CLIDR */
+#define ARMV7_CLIDR_CTYPE_NO_CACHE		0
+#define ARMV7_CLIDR_CTYPE_INSTRUCTION_ONLY	1
+#define ARMV7_CLIDR_CTYPE_DATA_ONLY		2
+#define ARMV7_CLIDR_CTYPE_INSTRUCTION_DATA	3
+#define ARMV7_CLIDR_CTYPE_UNIFIED		4
+
+/*
+ * CP15 Barrier instructions
+ * Please note that we have separate barrier instructions in ARMv7
+ * However, we use the CP15 based instructtions because we use
+ * -march=armv5 in U-Boot
+ */
+#define CP15ISB	asm volatile ("mcr     p15, 0, %0, c7, c5, 4" : : "r" (0))
+#define CP15DSB	asm volatile ("mcr     p15, 0, %0, c7, c10, 4" : : "r" (0))
+#define CP15DMB	asm volatile ("mcr     p15, 0, %0, c7, c10, 5" : : "r" (0))
+
+void v7_outer_cache_enable(void);
+void v7_outer_cache_disable(void);
+void v7_outer_cache_flush_all(void);
+void v7_outer_cache_inval_all(void);
+void v7_outer_cache_flush_range(u32 start, u32 end);
+void v7_outer_cache_inval_range(u32 start, u32 end);
+
+#endif