bsp/xen: Create BSP

Create the Xen BSP for Xen on ARM.

11 files changed, 521 insertions, 0 deletions

diff --git a/bsps/arm/xen/config/xen_virtual.cfg b/bsps/arm/xen/config/xen_virtual.cfg
new file mode 100644
index 0000000000..1b5031c3f0
--- /dev/null
+++ b/bsps/arm/xen/config/xen_virtual.cfg
@@ -0,0 +1,14 @@
+#
+#  Configuration file for the "xen_virtual" target
+#
+
+include $(RTEMS_ROOT)/make/custom/default.cfg
+
+RTEMS_CPU = arm
+
+CPU_CFLAGS = -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard
+
+CFLAGS_OPTIMIZE_V += -O2 -g
+CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
+
+LDFLAGS = -Wl,--gc-sections
diff --git a/bsps/arm/xen/console/console.c b/bsps/arm/xen/console/console.c
new file mode 100644
index 0000000000..786b98f3ba
--- /dev/null
+++ b/bsps/arm/xen/console/console.c
@@ -0,0 +1,63 @@
+/*
+ * 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.
+ */
+
+#include <rtems/bspIo.h>
+
+#include <bsp.h>
+#include <bsp/arm-pl011.h>
+#include <bsp/console-termios.h>
+#include <bsp/irq-generic.h>
+
+#include <bspopts.h>
+
+arm_pl011_context xen_vpl011_context = {
+  .base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("PL011"),
+  .regs = (volatile pl011 *) BSP_XEN_VPL011_BASE,
+  .irq = GUEST_VPL011_SPI,
+  .initial_baud = 115200
+};
+
+const console_device console_device_table[] = {
+  {
+    .device_file = "/dev/ttyS0",
+    .probe = console_device_probe_default,
+    .handler = &arm_pl011_fns,
+    .context = &xen_vpl011_context.base
+  }
+};
+
+const size_t console_device_count = RTEMS_ARRAY_SIZE(console_device_table);
+
+static void output_char( char c )
+{
+  arm_pl011_write_polled(&xen_vpl011_context.base, c);
+}
+
+BSP_output_char_function_type BSP_output_char = output_char;
+
+BSP_polling_getchar_function_type BSP_poll_char = NULL;
diff --git a/bsps/arm/xen/headers.am b/bsps/arm/xen/headers.am
new file mode 100644
index 0000000000..952fa37670
--- /dev/null
+++ b/bsps/arm/xen/headers.am
@@ -0,0 +1,10 @@
+## This file was generated by "./boostrap -H".
+
+include_HEADERS =
+include_HEADERS += ../../../../../../bsps/arm/xen/include/bsp.h
+include_HEADERS += include/bspopts.h
+include_HEADERS += ../../../../../../bsps/arm/xen/include/tm27.h
+
+include_bspdir = $(includedir)/bsp
+include_bsp_HEADERS =
+include_bsp_HEADERS += ../../../../../../bsps/arm/xen/include/bsp/irq.h
diff --git a/bsps/arm/xen/include/bsp.h b/bsps/arm/xen/include/bsp.h
new file mode 100644
index 0000000000..e5b23a902e
--- /dev/null
+++ b/bsps/arm/xen/include/bsp.h
@@ -0,0 +1,86 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSBSPsARMxen
+ *
+ * @brief Global BSP definitions.
+ */
+
+/*
+ * 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.
+ */
+
+#ifndef LIBBSP_ARM_XEN_BSP_H
+#define LIBBSP_ARM_XEN_BSP_H
+
+/**
+ * @addtogroup RTEMSBSPsARM
+ *
+ * @{
+ */
+
+#include <bspopts.h>
+
+#define BSP_FEATURE_IRQ_EXTENSION
+
+#ifndef ASM
+
+#include <bsp/default-initial-extension.h>
+#include <bsp/start.h>
+
+#include <rtems.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#define BSP_ARM_GIC_CPUIF_BASE 0x03002000
+#define BSP_ARM_GIC_CPUIF_LENGTH 0x1000
+
+#define BSP_ARM_GIC_DIST_BASE 0x03001000
+#define BSP_ARM_GIC_DIST_LENGTH 0x1000
+
+#define BSP_ARM_A9MPCORE_SCU_BASE 0
+
+#define BSP_ARM_A9MPCORE_GT_BASE 0
+
+#define BSP_XEN_VPL011_BASE 0x22000000
+#define BSP_XEN_VPL011_LENGTH 0x1000
+
+void arm_generic_timer_get_config(uint32_t *frequency, uint32_t *irq);
+
+BSP_START_TEXT_SECTION void bsp_xen_setup_mmu_and_cache(void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* ASM */
+
+/** @} */
+
+#endif /* LIBBSP_ARM_XEN_BSP_H */
diff --git a/bsps/arm/xen/include/bsp/irq.h b/bsps/arm/xen/include/bsp/irq.h
new file mode 100644
index 0000000000..dc09e52373
--- /dev/null
+++ b/bsps/arm/xen/include/bsp/irq.h
@@ -0,0 +1,62 @@
+/*
+ * 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.
+ */
+
+#ifndef LIBBSP_ARM_XEN_IRQ_H
+#define LIBBSP_ARM_XEN_IRQ_H
+
+#ifndef ASM
+
+#include <rtems/irq.h>
+#include <rtems/irq-extension.h>
+
+#include <bsp/arm-gic-irq.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#define BSP_INTERRUPT_VECTOR_MIN 0
+#define BSP_INTERRUPT_VECTOR_MAX 1023
+
+/* Xen guest interrupts */
+#define GUEST_TIMER_VIRT_PPI 27
+#define GUEST_TIMER_PHYS_S_PPI 29
+#define GUEST_TIMER_PHYS_NS_PPI 30
+#define GUEST_EVTCHN_PPI 31
+
+#define GUEST_VPL011_SPI 32
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* ASM */
+
+#endif /* LIBBSP_ARM_XEN_IRQ_H */
diff --git a/bsps/arm/xen/include/tm27.h b/bsps/arm/xen/include/tm27.h
new file mode 100644
index 0000000000..2fc4afa4f2
--- /dev/null
+++ b/bsps/arm/xen/include/tm27.h
@@ -0,0 +1,38 @@
+/*
+ * 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.
+ */
+
+#ifndef _RTEMS_TMTEST27
+#error "This is an RTEMS internal file you must not include directly."
+#endif
+
+#ifndef __tm27_h
+#define __tm27_h
+
+#include <bsp/arm-gic-tm27.h>
+
+#endif /* __tm27_h */
diff --git a/bsps/arm/xen/start/bsp_specs b/bsps/arm/xen/start/bsp_specs
new file mode 100644
index 0000000000..47dd31d46b
--- /dev/null
+++ b/bsps/arm/xen/start/bsp_specs
@@ -0,0 +1,9 @@
+%rename endfile old_endfile
+%rename startfile old_startfile
+
+*startfile:
+%{!qrtems: %(old_startfile)} \
+%{!nostdlib: %{qrtems: crti.o%s crtbegin.o%s}}
+
+*endfile:
+%{!qrtems: %(old_endfiles)} %{qrtems: crtend.o%s crtn.o%s}
diff --git a/bsps/arm/xen/start/bspstart.c b/bsps/arm/xen/start/bspstart.c
new file mode 100644
index 0000000000..6b826fc917
--- /dev/null
+++ b/bsps/arm/xen/start/bspstart.c
@@ -0,0 +1,60 @@
+/*
+ * 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.
+ */
+
+#include <bsp.h>
+#include <bsp/bootcard.h>
+#include <bsp/irq-generic.h>
+#include <bsp/linker-symbols.h>
+
+#include <libcpu/arm-cp15.h>
+
+void arm_generic_timer_get_config( uint32_t *frequency, uint32_t *irq )
+{
+  *frequency = arm_cp15_get_counter_frequency();
+
+#ifdef ARM_GENERIC_TIMER_USE_VIRTUAL
+  *irq = GUEST_TIMER_VIRT_PPI;
+#else
+  *irq = GUEST_TIMER_PHYS_NS_PPI;
+#endif
+}
+
+/*
+ *  bsp_start
+ *
+ *  This routine does the bulk of the system initialization.
+ */
+
+void bsp_start( void )
+{
+  bsp_interrupt_initialize();
+  rtems_cache_coherent_add_area(
+    bsp_section_nocacheheap_begin,
+    (uintptr_t) bsp_section_nocacheheap_size
+  );
+}
diff --git a/bsps/arm/xen/start/bspstarthooks.c b/bsps/arm/xen/start/bspstarthooks.c
new file mode 100644
index 0000000000..120535c60f
--- /dev/null
+++ b/bsps/arm/xen/start/bspstarthooks.c
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ */
+
+#include <bsp.h>
+#include <bsp/start.h>
+#include <bsp/arm-a9mpcore-start.h>
+
+BSP_START_TEXT_SECTION void bsp_start_hook_0(void)
+{
+  /* Do nothing */
+}
+
+BSP_START_TEXT_SECTION void bsp_start_hook_1(void)
+{
+  arm_a9mpcore_start_set_vector_base();
+  bsp_start_copy_sections();
+  bsp_xen_setup_mmu_and_cache();
+  bsp_start_clear_bss();
+}
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)
+  );
+}
diff --git a/bsps/arm/xen/start/linkcmds.in b/bsps/arm/xen/start/linkcmds.in
new file mode 100644
index 0000000000..944687679b
--- /dev/null
+++ b/bsps/arm/xen/start/linkcmds.in
@@ -0,0 +1,62 @@
+/*
+ * 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.
+ */
+
+MEMORY {
+   RAM_MMU   : ORIGIN = @GUEST_RAM_BASE@, LENGTH = @GUEST_RAM_MMU_LENGTH@
+   RAM       : ORIGIN = @GUEST_RAM_BASE@ + @GUEST_LOAD_OFFSET@, LENGTH = @GUEST_RAM_LENGTH@ - @GUEST_LOAD_OFFSET@ - @GUEST_RAM_NOCACHE_LENGTH@
+   NOCACHE   : ORIGIN = @GUEST_RAM_BASE@ + @GUEST_RAM_LENGTH@ - @GUEST_RAM_NOCACHE_LENGTH@, LENGTH = @GUEST_RAM_NOCACHE_LENGTH@
+}
+
+REGION_ALIAS ("REGION_START",          RAM);
+REGION_ALIAS ("REGION_VECTOR",         RAM);
+REGION_ALIAS ("REGION_TEXT",           RAM);
+REGION_ALIAS ("REGION_TEXT_LOAD",      RAM);
+REGION_ALIAS ("REGION_RODATA",         RAM);
+REGION_ALIAS ("REGION_RODATA_LOAD",    RAM);
+REGION_ALIAS ("REGION_DATA",           RAM);
+REGION_ALIAS ("REGION_DATA_LOAD",      RAM);
+REGION_ALIAS ("REGION_FAST_TEXT",      RAM);
+REGION_ALIAS ("REGION_FAST_TEXT_LOAD", RAM);
+REGION_ALIAS ("REGION_FAST_DATA",      RAM);
+REGION_ALIAS ("REGION_FAST_DATA_LOAD", RAM);
+REGION_ALIAS ("REGION_BSS",            RAM);
+REGION_ALIAS ("REGION_WORK",           RAM);
+REGION_ALIAS ("REGION_STACK",          RAM);
+REGION_ALIAS ("REGION_NOCACHE",        NOCACHE);
+REGION_ALIAS ("REGION_NOCACHE_LOAD",   NOCACHE);
+
+bsp_stack_abt_size = DEFINED (bsp_stack_abt_size) ? bsp_stack_abt_size : 1024;
+
+bsp_section_rwbarrier_align = DEFINED (bsp_section_rwbarrier_align) ? bsp_section_rwbarrier_align : 1M;
+
+bsp_vector_table_in_start_section = 1;
+
+bsp_translation_table_base = ORIGIN (RAM_MMU);
+bsp_translation_table_end = ORIGIN (RAM_MMU) + LENGTH (RAM_MMU);
+
+INCLUDE linkcmds.armv4