1 files changed, 73 insertions, 0 deletions
diff --git a/bsps/arm/xen/start/bspstartmmu.c b/bsps/arm/xen/start/bspstartmmu.c
new file mode 100644
index 0000000000..b24af89d41
--- /dev/null
+++ b/bsps/arm/xen/start/bspstartmmu.c
@@ -0,0 +1,73 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (C) 2019 DornerWorks
+ * Written by Jeff Kubascik <jeff.kubascik@dornerworks.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * 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 OWNER 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.
+ */
+
+#define ARM_CP15_TEXT_SECTION BSP_START_TEXT_SECTION
+
+#include <bsp.h>
+#include <bsp/start.h>
+#include <bsp/arm-cp15-start.h>
+#include <bsp/arm-a9mpcore-start.h>
+
+BSP_START_DATA_SECTION static const arm_cp15_start_section_config
+xen_bsp_mmu_config_table[] = {
+  ARMV7_CP15_START_DEFAULT_SECTIONS,
+  {
+    .begin = BSP_ARM_GIC_DIST_BASE,
+    .end = BSP_ARM_GIC_DIST_BASE + BSP_ARM_GIC_DIST_LENGTH,
+    .flags = ARMV7_MMU_DEVICE
+  }, {
+    .begin = BSP_ARM_GIC_CPUIF_BASE,
+    .end = BSP_ARM_GIC_CPUIF_BASE + BSP_ARM_GIC_CPUIF_LENGTH,
+    .flags = ARMV7_MMU_DEVICE
+  }, {
+    .begin = BSP_XEN_VPL011_BASE,
+    .end = BSP_XEN_VPL011_BASE + BSP_XEN_VPL011_LENGTH,
+    .flags = ARMV7_MMU_DEVICE
+  }
+};
+
+/*
+ * Make weak and let the user override.
+ */
+BSP_START_TEXT_SECTION void bsp_xen_setup_mmu_and_cache(void) __attribute__ ((weak));
+
+BSP_START_TEXT_SECTION void bsp_xen_setup_mmu_and_cache(void)
+{
+  uint32_t ctrl = arm_cp15_start_setup_mmu_and_cache(
+    ARM_CP15_CTRL_TRE | ARM_CP15_CTRL_A,
+    ARM_CP15_CTRL_AFE | ARM_CP15_CTRL_Z
+  );
+
+  arm_cp15_start_setup_translation_table_and_enable_mmu_and_cache(
+    ctrl,
+    (uint32_t *) bsp_translation_table_base,
+    ARM_MMU_DEFAULT_CLIENT_DOMAIN,
+    &xen_bsp_mmu_config_table[0],
+    RTEMS_ARRAY_SIZE(xen_bsp_mmu_config_table)
+  );
+}