Add ARM CoreLink DMC-500 driver to program TrustZone protection

The ARM CoreLink DMC-500 Dynamic Memory Controller provides the
programmable address region control of a TrustZone Address Space
Controller. The access permissions can be defined for eight
separate address regions plus a background or default region.
This patch adds a DMC-500 driver to define address regions and
program their access permissions as per ARM 100131_0000_02_en
(r0p0) document.

Change-Id: I9d33120f9480d742bcf7937e4b876f9d40c727e6

1 files changed, 174 insertions, 0 deletions

diff --git a/include/drivers/arm/tzc_dmc500.h b/include/drivers/arm/tzc_dmc500.h
new file mode 100644
index 00000000..70f8ad2d
--- /dev/null
+++ b/include/drivers/arm/tzc_dmc500.h
@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __TZC_DMC500_H__
+#define __TZC_DMC500_H__
+
+#include <tzc_common.h>
+
+#define SI_STATUS_OFFSET				0x000
+#define SI_STATE_CTRL_OFFSET				0x030
+#define SI_FLUSH_CTRL_OFFSET				0x034
+#define SI_INT_CONTROL_OFFSET				0x048
+
+#define SI_INT_STATUS_OFFSET				0x004
+#define SI_TZ_FAIL_ADDRESS_LOW_OFFSET			0x008
+#define SI_TZ_FAIL_ADDRESS_HIGH_OFFSET			0x00c
+#define SI_FAIL_CONTROL_OFFSET				0x010
+#define SI_FAIL_ID_OFFSET				0x014
+#define SI_INT_CLR_OFFSET				0x04c
+
+/*
+ * DMC-500 has 2 system interfaces each having a similar set of regs
+ * to configure each interface.
+ */
+#define SI0_BASE					0x0000
+#define SI1_BASE					0x0200
+
+/* Bit positions of SIx_SI_STATUS */
+#define SI_EMPTY_SHIFT					0x01
+#define SI_STALL_ACK_SHIFT				0x00
+#define SI_EMPTY_MASK					0x01
+#define SI_STALL_ACK_MASK				0x01
+
+/* Bit positions of SIx_SI_INT_STATUS */
+#define PMU_REQ_INT_OVERFLOW_STATUS_SHIFT		18
+#define FAILED_ACCESS_INT_OVERFLOW_STATUS_SHIFT		16
+#define PMU_REQ_INT_STATUS_SHIFT			2
+#define FAILED_ACCESS_INT_INFO_TZ_OVERLAP_STATUS_SHIFT	1
+#define FAILED_ACCESS_INT_STATUS_SHIFT			0
+#define PMU_REQ_INT_OVERFLOW_STATUS_MASK		0x1
+#define FAILED_ACCESS_INT_OVERFLOW_STATUS_MASK		0x1
+#define PMU_REQ_INT_STATUS_MASK				0x1
+#define FAILED_ACCESS_INT_INFO_TZ_OVERLAP_STATUS_MASK	0x1
+#define FAILED_ACCESS_INT_STATUS_MASK			0x1
+
+/* Bit positions of SIx_TZ_FAIL_CONTROL */
+#define DIRECTION_SHIFT					24
+#define NON_SECURE_SHIFT				21
+#define PRIVILEGED_SHIFT				20
+#define FAILED_ACCESS_INT_INFO_RANK_MASKED_SHIFT	3
+#define FAILED_ACCESS_INT_INFO_UNMAPPED_SHIFT		2
+#define FAILED_ACCESS_INT_TZ_FAIL_SHIFT			0x1
+#define FAILED_ACCESS_INT_INFO_OUTSIDE_DEFAULT_SHIFT	0
+#define DIRECTION_MASK					0x1
+#define NON_SECURE_MASK					0x1
+#define PRIVILEGED_MASK					0x1
+#define FAILED_ACCESS_INT_INFO_RANK_MASKED_MASK		0x1
+#define FAILED_ACCESS_INT_INFO_UNMAPPED_MASK		0x1
+#define FAILED_ACCESS_INT_TZ_FAIL_MASK			1
+#define FAILED_ACCESS_INT_INFO_OUTSIDE_DEFAULT_MASK	0x1
+
+/* Bit positions of SIx_FAIL_STATUS */
+#define FAIL_ID_VNET_SHIFT				24
+#define FAIL_ID_ID_SHIFT				0
+#define FAIL_ID_VNET_MASK				0xf
+#define FAIL_ID_ID_MASK					0xffffff
+
+/* Bit positions of SIx_SI_STATE_CONTRL */
+#define SI_STALL_REQ_GO					0x0
+#define SI_STALL_REQ_STALL				0x1
+
+/* Bit positions of SIx_SI_FLUSH_CONTROL */
+#define SI_FLUSH_REQ_INACTIVE				0x0
+#define SI_FLUSH_REQ_ACTIVE				0x1
+#define SI_FLUSH_REQ_MASK				0x1
+
+/* Bit positions of SIx_SI_INT_CONTROL */
+#define PMU_REQ_INT_EN_SHIFT				2
+#define OVERLAP_DETECT_INT_EN_SHIFT			1
+#define FAILED_ACCESS_INT_EN_SHIFT			0
+#define PMU_REQ_INT_EN_MASK				0x1
+#define OVERLAP_DETECT_INT_EN_MASK			0x1
+#define FAILED_ACCESS_INT_EN_MASK			0x1
+#define PMU_REQ_INT_EN					0x1
+#define OVERLAP_DETECT_INT_EN				0x1
+#define FAILED_ACCESS_INT_EN				0x1
+
+/* Bit positions of SIx_SI_INT_CLR */
+#define PMU_REQ_OFLOW_CLR_SHIFT				18
+#define FAILED_ACCESS_OFLOW_CLR_SHIFT			16
+#define PMU_REQ_INT_CLR_SHIFT				2
+#define FAILED_ACCESS_INT_CLR_SHIFT			0
+#define PMU_REQ_OFLOW_CLR_MASK				0x1
+#define FAILED_ACCESS_OFLOW_CLR_MASK			0x1
+#define PMU_REQ_INT_CLR_MASK				0x1
+#define FAILED_ACCESS_INT_CLR_MASK			0x1
+#define PMU_REQ_OFLOW_CLR				0x1
+#define FAILED_ACCESS_OFLOW_CLR				0x1
+#define PMU_REQ_INT_CLR					0x1
+#define FAILED_ACCESS_INT_CLR				0x1
+
+/* Macro to get the correct base register for a system interface */
+#define IFACE_OFFSET(sys_if)	((sys_if) ? SI1_BASE : SI0_BASE)
+
+#define MAX_SYS_IF_COUNT				2
+#define MAX_REGION_VAL					8
+
+/* DMC-500 supports striping across a max of 4 DMC instances */
+#define MAX_DMC_COUNT					4
+
+/* Consist of part_number_1 and part_number_0 */
+#define DMC500_PERIPHERAL_ID				0x0450
+
+/* Filter enable bits in a TZC */
+#define TZC_DMC500_REGION_ATTR_F_EN_MASK		0x1
+
+/* Length of registers for configuring each region */
+#define TZC_DMC500_REGION_SIZE				0x018
+
+#ifndef __ASSEMBLY__
+
+#include <stdint.h>
+
+/*
+ * Contains the base addresses of all the DMC instances.
+ */
+typedef struct tzc_dmc500_driver_data {
+	uintptr_t dmc_base[MAX_DMC_COUNT];
+	int dmc_count;
+} tzc_dmc500_driver_data_t;
+
+void tzc_dmc500_driver_init(const tzc_dmc500_driver_data_t *plat_driver_data);
+void tzc_dmc500_configure_region0(tzc_region_attributes_t sec_attr,
+				unsigned int nsaid_permissions);
+void tzc_dmc500_configure_region(int region_no,
+				uintptr_t region_base,
+				uintptr_t region_top,
+				tzc_region_attributes_t sec_attr,
+				unsigned int nsaid_permissions);
+void tzc_dmc500_set_action(tzc_action_t action);
+void tzc_dmc500_config_complete(void);
+int tzc_dmc500_verify_complete(void);
+
+
+#endif /* __ASSEMBLY__ */
+#endif /* __TZC_DMC500_H__ */
+