1 files changed, 84 insertions, 0 deletions
diff --git a/bsps/aarch64/raspberrypi/start/bspstartmmu.c b/bsps/aarch64/raspberrypi/start/bspstartmmu.c
new file mode 100644
index 0000000000..18a9a112b0
--- /dev/null
+++ b/bsps/aarch64/raspberrypi/start/bspstartmmu.c
@@ -0,0 +1,84 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSBSPsAArch64Raspberrypi4
+ *
+ * @brief This source file contains the default MMU tables and setup.
+ */
+
+/*
+ * Copyright (C) 2022 Mohd Noor Aman
+ *
+ *
+ * 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.
+ */
+
+#include <bsp.h>
+#include <bsp/start.h>
+#include <bsp/aarch64-mmu.h>
+#include <bsp/raspberrypi.h>
+#include <libcpu/mmu-vmsav8-64.h>
+
+
+BSP_START_DATA_SECTION static const aarch64_mmu_config_entry
+raspberrypi_4_mmu_config_table[] = {
+  AARCH64_MMU_DEFAULT_SECTIONS,
+
+  { /* RPI peripheral address */
+    .begin = (unsigned)RPI_PERIPHERAL_BASE,
+    .end = (unsigned)RPI_PERIPHERAL_BASE + (unsigned)RPI_PERIPHERAL_SIZE,
+    .flags = AARCH64_MMU_DEVICE
+  },
+
+  { /* RPI ARM local registers */
+    .begin = (unsigned)BCM2711_LOCAL_REGS_BASE,
+    .end = (unsigned)BCM2711_LOCAL_REGS_BASE + (unsigned)BCM2711_LOCAL_REGS_SIZE,
+    .flags = AARCH64_MMU_DEVICE
+  },
+
+  { /* RPI GIC Interface address */
+    .begin = 0xFF800000U,
+    .end = 0xFFA00000U,
+    .flags = AARCH64_MMU_DEVICE
+  }
+
+};
+/*
+ * Make weak and let the user override.
+ */
+BSP_START_TEXT_SECTION void
+raspberrypi_4_setup_mmu_and_cache( void ) __attribute__ ((weak));
+
+BSP_START_TEXT_SECTION void
+raspberrypi_4_setup_mmu_and_cache( void )
+{
+  aarch64_mmu_setup();
+
+  aarch64_mmu_setup_translation_table(
+    &raspberrypi_4_mmu_config_table[ 0 ],
+    RTEMS_ARRAY_SIZE( raspberrypi_4_mmu_config_table )
+  );
+
+  aarch64_mmu_enable();
+}
+\ No newline at end of file