| Runtime Instrumentation Testing - N1SDP |
| ======================================= |
| |
| For this test we used the N1 System Development Platform (`N1SDP`_), which |
| contains an SoC consisting of two dual-core Arm N1 clusters. |
| |
| The following source trees and binaries were used: |
| |
| - TF-A [`v2.9-rc0-16-g666aec401`_] |
| - TFTF [`v2.9-rc0`_] |
| - SCP/MCP `Prebuilt Images`_ |
| |
| Please see the Runtime Instrumentation :ref:`Testing Methodology |
| <Runtime Instrumentation Methodology>` page for more details. |
| |
| Procedure |
| --------- |
| |
| #. Build TFTF with runtime instrumentation enabled: |
| |
| .. code:: shell |
| |
| make CROSS_COMPILE=aarch64-none-elf- PLAT=n1sdp \ |
| TESTS=runtime-instrumentation all |
| |
| #. Build TF-A with the following build options: |
| |
| .. code:: shell |
| |
| make CROSS_COMPILE=aarch64-none-elf- PLAT=n1sdp \ |
| ENABLE_RUNTIME_INSTRUMENTATION=1 fiptool all |
| |
| #. Fetch the SCP firmware images: |
| |
| .. code:: shell |
| |
| curl --fail --connect-timeout 5 --retry 5 \ |
| -sLS -o build/n1sdp/release/scp_rom.bin \ |
| https://downloads.trustedfirmware.org/tf-a/css_scp_2.12.0/n1sdp/release/n1sdp-bl1.bin |
| curl --fail --connect-timeout 5 \ |
| --retry 5 -sLS -o build/n1sdp/release/scp_ram.bin \ |
| https://downloads.trustedfirmware.org/tf-a/css_scp_2.12.0/n1sdp/release/n1sdp-bl2.bin |
| |
| #. Fetch the MCP firmware images: |
| |
| .. code:: shell |
| |
| curl --fail --connect-timeout 5 --retry 5 \ |
| -sLS -o build/n1sdp/release/mcp_rom.bin \ |
| https://downloads.trustedfirmware.org/tf-a/css_scp_2.12.0/n1sdp/release/n1sdp-mcp-bl1.bin |
| curl --fail --connect-timeout 5 --retry 5 \ |
| -sLS -o build/n1sdp/release/mcp_ram.bin \ |
| https://downloads.trustedfirmware.org/tf-a/css_scp_2.12.0/n1sdp/release/n1sdp-mcp-bl2.bin |
| |
| #. Using the fiptool, create a new FIP package and append the SCP ram image onto |
| it. |
| |
| .. code:: shell |
| |
| ./tools/fiptool/fiptool create --blob \ |
| uuid=cfacc2c4-15e8-4668-82be-430a38fad705,file=build/n1sdp/release/bl1.bin \ |
| --scp-fw build/n1sdp/release/scp_ram.bin build/n1sdp/release/scp_fw.bin |
| |
| #. Append the MCP image to the FIP. |
| |
| .. code:: shell |
| |
| ./tools/fiptool/fiptool create \ |
| --blob uuid=54464222-a4cf-4bf8-b1b6-cee7dade539e,file=build/n1sdp/release/mcp_ram.bin \ |
| build/n1sdp/release/mcp_fw.bin |
| |
| #. Then, add TFTF as the Non-Secure workload in the FIP image: |
| |
| .. code:: shell |
| |
| make CROSS_COMPILE=aarch64-none-elf- PLAT=n1sdp \ |
| ENABLE_RUNTIME_INSTRUMENTATION=1 SCP_BL2=/dev/null \ |
| BL33=<path/to/tftf.bin> fip |
| |
| #. Load the following images onto the development board: ``fip.bin``, |
| ``scp_rom.bin``, ``scp_ram.bin``, ``mcp_rom.bin``, and ``mcp_ram.bin``. |
| |
| .. note:: |
| |
| These instructions presume you have a complete firmware stack. The N1SDP |
| `user guide`_ provides a detailed explanation on how to get setup from |
| scratch. |
| |
| Results |
| ------- |
| |
| ``CPU_SUSPEND`` to deepest power level |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| |
| .. table:: ``CPU_SUSPEND`` latencies (µs) to deepest power level in |
| parallel (v2.9) |
| |
| +---------+------+-----------+--------+-------------+ |
| | Cluster | Core | Powerdown | Wakeup | Cache Flush | |
| +---------+------+-----------+--------+-------------+ |
| | 0 | 0 | 2.80 | 10.08 | 0.80 | |
| +---------+------+-----------+--------+-------------+ |
| | 0 | 0 | 4.14 | 15.92 | 0.16 | |
| +---------+------+-----------+--------+-------------+ |
| | 1 | 0 | 3.68 | 12.96 | 0.16 | |
| +---------+------+-----------+--------+-------------+ |
| | 1 | 0 | 3.36 | 18.58 | 0.18 | |
| +---------+------+-----------+--------+-------------+ |
| |
| .. table:: ``CPU_SUSPEND`` latencies (µs) to deepest power level in |
| parallel (v2.10) |
| |
| +---------+------+----------------+------------------+-----------------+ |
| | Cluster | Core | Powerdown | Wakeup | Cache Flush | |
| +---------+------+----------------+------------------+-----------------+ |
| | 0 | 0 | 2.12 | 23.94 (+137.50%) | 0.42 (-47.50%) | |
| +---------+------+----------------+------------------+-----------------+ |
| | 0 | 0 | 3.52 | 42.08 (+164.32%) | 0.26 (+62.50%) | |
| +---------+------+----------------+------------------+-----------------+ |
| | 1 | 0 | 2.76 (-25.00%) | 38.3 (+195.52%) | 0.26 (+62.50%) | |
| +---------+------+----------------+------------------+-----------------+ |
| | 1 | 0 | 2.64 | 44.56 (+139.83%) | 0.36 (+100.00%) | |
| +---------+------+----------------+------------------+-----------------+ |
| |
| .. table:: ``CPU_SUSPEND`` latencies (µs) to deepest power level in |
| serial (v2.9) |
| |
| +---------+------+-----------+--------+-------------+ |
| | Cluster | Core | Powerdown | Wakeup | Cache Flush | |
| +---------+------+-----------+--------+-------------+ |
| | 0 | 0 | 1.86 | 9.92 | 0.32 | |
| +---------+------+-----------+--------+-------------+ |
| | 0 | 0 | 2.70 | 10.48 | 0.36 | |
| +---------+------+-----------+--------+-------------+ |
| | 1 | 0 | 1.78 | 9.72 | 0.16 | |
| +---------+------+-----------+--------+-------------+ |
| | 1 | 0 | 1.94 | 10.44 | 0.16 | |
| +---------+------+-----------+--------+-------------+ |
| |
| .. table:: ``CPU_SUSPEND`` latencies (µs) to deepest power level in |
| serial (v2.10) |
| |
| +---------+------+-----------+------------------+----------------+ |
| | Cluster | Core | Powerdown | Wakeup | Cache Flush | |
| +---------+------+-----------+------------------+----------------+ |
| | 0 | 0 | 1.74 | 23.7 (+138.91%) | 0.3 | |
| +---------+------+-----------+------------------+----------------+ |
| | 0 | 0 | 2.08 | 23.96 (+128.63%) | 0.26 (-27.78%) | |
| +---------+------+-----------+------------------+----------------+ |
| | 1 | 0 | 1.9 | 23.62 (+143.00%) | 0.28 (+75.00%) | |
| +---------+------+-----------+------------------+----------------+ |
| | 1 | 0 | 2.06 | 23.92 (+129.12%) | 0.26 (+62.50%) | |
| +---------+------+-----------+------------------+----------------+ |
| |
| ``CPU_SUSPEND`` to power level 0 |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| |
| .. table:: ``CPU_SUSPEND`` latencies (µs) to power level 0 in |
| parallel (v2.9) |
| |
| +---------------------------------------------------+ |
| | test_rt_instr_cpu_susp_parallel | |
| +---------+------+-----------+--------+-------------+ |
| | Cluster | Core | Powerdown | Wakeup | Cache Flush | |
| +---------+------+-----------+--------+-------------+ |
| | 0 | 0 | 0.88 | 12.32 | 0.26 | |
| +---------+------+-----------+--------+-------------+ |
| | 0 | 0 | 2.12 | 14.62 | 0.26 | |
| +---------+------+-----------+--------+-------------+ |
| | 1 | 0 | 1.86 | 14.14 | 0.16 | |
| +---------+------+-----------+--------+-------------+ |
| | 1 | 0 | 1.92 | 9.44 | 0.18 | |
| +---------+------+-----------+--------+-------------+ |
| |
| .. table:: ``CPU_SUSPEND`` latencies (µs) to power level 0 in |
| parallel (v2.10) |
| |
| +---------+------+---------------+------------------+----------------+ |
| | Cluster | Core | Powerdown | Wakeup | Cache Flush | |
| +---------+------+---------------+------------------+----------------+ |
| | 0 | 0 | 1.5 (+70.45%) | 35.02 (+184.25%) | 0.24 | |
| +---------+------+---------------+------------------+----------------+ |
| | 0 | 0 | 1.92 | 38.12 (+160.74%) | 0.28 | |
| +---------+------+---------------+------------------+----------------+ |
| | 1 | 0 | 1.88 | 38.1 (+169.45%) | 0.26 (+62.50%) | |
| +---------+------+---------------+------------------+----------------+ |
| | 1 | 0 | 2.04 | 23.1 (+144.70%) | 0.24 | |
| +---------+------+---------------+------------------+----------------+ |
| |
| .. table:: ``CPU_SUSPEND`` latencies (µs) to power level 0 in serial (v2.9) |
| |
| +---------------------------------------------------+ |
| | test_rt_instr_cpu_susp_serial | |
| +---------+------+-----------+--------+-------------+ |
| | Cluster | Core | Powerdown | Wakeup | Cache Flush | |
| +---------+------+-----------+--------+-------------+ |
| | 0 | 0 | 1.52 | 9.40 | 0.30 | |
| +---------+------+-----------+--------+-------------+ |
| | 0 | 0 | 1.92 | 9.80 | 0.18 | |
| +---------+------+-----------+--------+-------------+ |
| | 1 | 0 | 2.20 | 9.60 | 0.14 | |
| +---------+------+-----------+--------+-------------+ |
| | 1 | 0 | 1.82 | 9.78 | 0.18 | |
| +---------+------+-----------+--------+-------------+ |
| |
| .. table:: ``CPU_SUSPEND`` latencies (µs) to power level 0 in serial (v2.10) |
| |
| +---------+------+-----------+------------------+-----------------+ |
| | Cluster | Core | Powerdown | Wakeup | Cache Flush | |
| +---------+------+-----------+------------------+-----------------+ |
| | 0 | 0 | 1.52 | 23.08 (+145.53%) | 0.3 | |
| +---------+------+-----------+------------------+-----------------+ |
| | 0 | 0 | 1.98 | 23.68 (+141.63%) | 0.28 (+55.56%) | |
| +---------+------+-----------+------------------+-----------------+ |
| | 1 | 0 | 1.84 | 23.86 (+148.54%) | 0.28 (+100.00%) | |
| +---------+------+-----------+------------------+-----------------+ |
| | 1 | 0 | 1.98 | 23.68 (+142.13%) | 0.28 (+55.56%) | |
| +---------+------+-----------+------------------+-----------------+ |
| |
| ``CPU_OFF`` on all non-lead CPUs |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| |
| ``CPU_OFF`` on all non-lead CPUs in sequence then, ``CPU_SUSPEND`` on the lead |
| core to the deepest power level. |
| |
| .. table:: ``CPU_OFF`` latencies (µs) on all non-lead CPUs (v2.9) |
| |
| +---------+------+-----------+--------+-------------+ |
| | Cluster | Core | Powerdown | Wakeup | Cache Flush | |
| +---------+------+-----------+--------+-------------+ |
| | 0 | 0 | 1.84 | 9.94 | 0.32 | |
| +---------+------+-----------+--------+-------------+ |
| | 0 | 0 | 14.20 | 13.10 | 0.50 | |
| +---------+------+-----------+--------+-------------+ |
| | 1 | 0 | 13.88 | 12.36 | 0.42 | |
| +---------+------+-----------+--------+-------------+ |
| | 1 | 0 | 14.40 | 13.26 | 0.52 | |
| +---------+------+-----------+--------+-------------+ |
| |
| .. table:: ``CPU_OFF`` latencies (µs) on all non-lead CPUs (v2.10) |
| |
| +---------+------+-----------+------------------+----------------+ |
| | Cluster | Core | Powerdown | Wakeup | Cache Flush | |
| +---------+------+-----------+------------------+----------------+ |
| | 0 | 0 | 1.78 | 23.7 (+138.43%) | 0.3 | |
| +---------+------+-----------+------------------+----------------+ |
| | 0 | 0 | 13.96 | 31.16 (+137.86%) | 0.34 (-32.00%) | |
| +---------+------+-----------+------------------+----------------+ |
| | 1 | 0 | 13.54 | 30.24 (+144.66%) | 0.26 (-38.10%) | |
| +---------+------+-----------+------------------+----------------+ |
| | 1 | 0 | 14.46 | 31.12 (+134.69%) | 0.7 (+34.62%) | |
| +---------+------+-----------+------------------+----------------+ |
| |
| ``CPU_VERSION`` in parallel |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| |
| .. table:: ``CPU_VERSION`` latency (µs) in parallel on all cores (v2.9) |
| |
| +------------------------------------+ |
| | test_rt_instr_psci_version_parallel| |
| +-------------+--------+-------------+ |
| | Cluster | Core | Latency | |
| +-------------+--------+-------------+ |
| | 0 | 0 | 0.08 | |
| +-------------+--------+-------------+ |
| | 0 | 0 | 0.26 | |
| +-------------+--------+-------------+ |
| | 1 | 0 | 0.20 | |
| +-------------+--------+-------------+ |
| | 1 | 0 | 0.26 | |
| +-------------+--------+-------------+ |
| |
| .. table:: ``CPU_VERSION`` latency (µs) in parallel on all cores (v2.10) |
| |
| +----------------------------------------------+ |
| | test_rt_instr_psci_version_parallel (latest) | |
| +-------------+--------+-----------------------+ |
| | Cluster | Core | Latency | |
| +-------------+--------+-----------------------+ |
| | 0 | 0 | 0.14 (+75.00%) | |
| +-------------+--------+-----------------------+ |
| | 0 | 0 | 0.22 | |
| +-------------+--------+-----------------------+ |
| | 1 | 0 | 0.2 | |
| +-------------+--------+-----------------------+ |
| | 1 | 0 | 0.26 | |
| +-------------+--------+-----------------------+ |
| |
| -------------- |
| |
| *Copyright (c) 2023, Arm Limited. All rights reserved.* |
| |
| .. _v2.9-rc0-16-g666aec401: https://review.trustedfirmware.org/plugins/gitiles/TF-A/trusted-firmware-a/+/refs/heads/v2.9-rc0-16-g666aec401 |
| .. _v2.9-rc0: https://review.trustedfirmware.org/plugins/gitiles/TF-A/tf-a-tests/+/refs/tags/v2.9-rc0 |
| .. _user guide: https://gitlab.arm.com/arm-reference-solutions/arm-reference-solutions-docs/-/blob/master/docs/n1sdp/user-guide.rst |
| .. _Prebuilt Images: https://downloads.trustedfirmware.org/tf-a/css_scp_2.11.0/n1sdp/release/ |
| .. _N1SDP: https://developer.arm.com/documentation/101489/latest |