[PATCH v4 9/9] bsps: Add Cortex-A53 ILP32 BSP variant
Kinsey Moore
kinsey.moore at oarcorp.com
Mon Oct 5 20:02:56 UTC 2020
This adds an AArch64 ILP32 BSP variant based on Qemu's Cortex-A53
emulation with interrupt support using GICv3 and clock support using
the ARM GPT.
---
bsps/aarch64/shared/start/start.S | 16 +++++
spec/build/bsps/aarch64/a53/abi.yml | 7 +-
.../bsps/aarch64/a53/bspa53ilp32qemu.yml | 19 +++++
.../build/bsps/aarch64/a53/linkcmds_ilp32.yml | 71 +++++++++++++++++++
4 files changed, 112 insertions(+), 1 deletion(-)
create mode 100644 spec/build/bsps/aarch64/a53/bspa53ilp32qemu.yml
create mode 100644 spec/build/bsps/aarch64/a53/linkcmds_ilp32.yml
diff --git a/bsps/aarch64/shared/start/start.S b/bsps/aarch64/shared/start/start.S
index f60e840137..f4c62b2b6c 100644
--- a/bsps/aarch64/shared/start/start.S
+++ b/bsps/aarch64/shared/start/start.S
@@ -101,19 +101,31 @@ _start:
* Get current per-CPU control and store it in PL1 only Thread ID
* Register (TPIDRPRW).
*/
+#ifdef AARCH64_MULTILIB_ARCH_V8_ILP32
+ ldr w1, =_Per_CPU_Information
+#else
ldr x1, =_Per_CPU_Information
+#endif
add x1, x1, x7, asl #PER_CPU_CONTROL_SIZE_LOG2
mcr p15, 0, x1, c13, c0, 4
#endif
/* Calculate interrupt stack area end for current processor */
+#ifdef AARCH64_MULTILIB_ARCH_V8_ILP32
+ ldr w1, =_ISR_Stack_size
+#else
ldr x1, =_ISR_Stack_size
+#endif
#ifdef RTEMS_SMP
add x3, x7, #1
mul x1, x1, x3
#endif
+#ifdef AARCH64_MULTILIB_ARCH_V8_ILP32
+ ldr w2, =_ISR_Stack_area_begin
+#else
ldr x2, =_ISR_Stack_area_begin
+#endif
add x3, x1, x2
/* Save original DAIF value */
@@ -135,7 +147,11 @@ _start:
* Normal operation for RTEMS on AArch64 uses SPx and runs on EL1
* Exception operation (synchronous errors, IRQ, FIQ, System Errors) uses SP0
*/
+#ifdef AARCH64_MULTILIB_ARCH_V8_ILP32
+ ldr w1, =bsp_stack_exception_size
+#else
ldr x1, =bsp_stack_exception_size
+#endif
/* Switch to SP0 and set exception stack */
msr spsel, #0
mov sp, x3
diff --git a/spec/build/bsps/aarch64/a53/abi.yml b/spec/build/bsps/aarch64/a53/abi.yml
index 894839aa24..b65c10981e 100644
--- a/spec/build/bsps/aarch64/a53/abi.yml
+++ b/spec/build/bsps/aarch64/a53/abi.yml
@@ -8,7 +8,12 @@ copyrights:
- Copyright (C) 2020 On-Line Applications Research (OAR)
default:
- -mcpu=cortex-a53
-default-by-variant: []
+default-by-variant:
+- value:
+ - -mcpu=cortex-a53
+ - -mabi=ilp32
+ variants:
+ - aarch64/a53_ilp32_qemu
enabled-by: true
links: []
name: ABI_FLAGS
diff --git a/spec/build/bsps/aarch64/a53/bspa53ilp32qemu.yml b/spec/build/bsps/aarch64/a53/bspa53ilp32qemu.yml
new file mode 100644
index 0000000000..019e97fcb3
--- /dev/null
+++ b/spec/build/bsps/aarch64/a53/bspa53ilp32qemu.yml
@@ -0,0 +1,19 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+arch: aarch64
+bsp: a53_ilp32_qemu
+build-type: bsp
+cflags: []
+copyrights:
+- Copyright (C) 2020 On-Line Applications Research (OAR)
+cppflags: []
+enabled-by: true
+family: a53
+includes: []
+install: []
+links:
+- role: build-dependency
+ uid: grp
+- role: build-dependency
+ uid: linkcmds_ilp32
+source: []
+type: build
diff --git a/spec/build/bsps/aarch64/a53/linkcmds_ilp32.yml b/spec/build/bsps/aarch64/a53/linkcmds_ilp32.yml
new file mode 100644
index 0000000000..ed585f1950
--- /dev/null
+++ b/spec/build/bsps/aarch64/a53/linkcmds_ilp32.yml
@@ -0,0 +1,71 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+build-type: config-file
+content: |
+ /*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (C) 2020 On-Line Applications Research Corporation (OAR)
+ * Written by Kinsey Moore <kinsey.moore at oarcorp.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 : ORIGIN = ${BSP_A53_RAM_BASE} + ${BSP_A53_LOAD_OFFSET}, LENGTH = ${BSP_A53_RAM_LENGTH} - ${BSP_A53_LOAD_OFFSET} - ${BSP_A53_NOCACHE_LENGTH}
+ NOCACHE : ORIGIN = ${BSP_A53_RAM_BASE} + ${BSP_A53_RAM_LENGTH} - ${BSP_A53_NOCACHE_LENGTH}, LENGTH = ${BSP_A53_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_exception_size = DEFINED (bsp_stack_exception_size) ? bsp_stack_exception_size : 1024;
+
+ bsp_section_rwbarrier_align = DEFINED (bsp_section_rwbarrier_align) ? bsp_section_rwbarrier_align : 1M;
+
+ bsp_vector_table_in_start_section = 1;
+
+ OUTPUT_FORMAT ("elf32-littleaarch64")
+ OUTPUT_ARCH (aarch64:ilp32)
+
+ INCLUDE linkcmds.base
+copyrights:
+- Copyright (C) 2020 On-Line Applications Research (OAR)
+enabled-by: true
+install-path: ${BSP_LIBDIR}
+links: []
+target: linkcmds
+type: build
--
2.20.1
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