From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pragnesh Patel Date: Wed, 11 Nov 2020 15:44:32 +0530 Subject: [PATCH v3 0/1] RISC-V tracing support Message-ID: <20201111101435.31455-1-pragnesh.patel@sifive.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de This series add a support of tracing for RISC-V arch. This series is also available here [1] for testing. [1] https://github.com/pragnesh26992/u-boot/tree/trace How to test this patch: 1) Enable tracing in "configs/sifive_fu540_defconfig" CONFIG_TRACE=y CONFIG_TRACE_BUFFER_SIZE=0x01000000 CONFIG_TRACE_CALL_DEPTH_LIMIT=15 CONFIG_CMD_TRACE=y 2) make FTRACE=1 sifive_fu540_defconfig 3) make FTRACE=1 Changes in v3: - Added gd->arch.plmt in global data - For timer_get_us(), use readq() instead of andes_plmt_get_count() and sifive_clint_get_count() Changes in v2: - Remove newly added timer file (arch/riscv/lib/timer.c) - Added timer_get_us() in riscv_timer.c, sifive_clint_timer.c and andes_plmt_timer.c. Following are the boot messages on FU540 five cores SMP platform: U-Boot SPL 2021.01-rc1-00244-g88b5af756c-dirty (Nov 11 2020 - 14:57:25 +0530) Trying to boot from MMC1 U-Boot 2021.01-rc1-00244-g88b5af756c-dirty (Nov 11 2020 - 14:57:25 +0530) CPU: rv64imafdc Model: SiFive HiFive Unleashed A00 DRAM: 8 GiB trace: enabled MMC: spi at 10050000:mmc at 0: 0 *** Warning - bad CRC, using default environment In: serial at 10010000 Out: serial at 10010000 Err: serial at 10010000 Board serial number should not be 0 !! Net: Error: ethernet at 10090000 address not set. No ethernet found. Hit any key to stop autoboot: 0 => trace stats 178,556 function sites 15,443,168 function calls 1 untracked function calls 1,279,056 traced function calls (14135744 dropped due to overflow) 19 maximum observed call depth 15 call depth limit 15,633,052 calls not traced due to depth => Pragnesh Patel (1): riscv: Add timer_get_us() for tracing arch/riscv/include/asm/global_data.h | 3 +++ drivers/timer/andes_plmt_timer.c | 19 ++++++++++++++++++- drivers/timer/riscv_timer.c | 14 +++++++++++++- drivers/timer/sifive_clint_timer.c | 19 ++++++++++++++++++- 4 files changed, 52 insertions(+), 3 deletions(-) -- 2.17.1