From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pragnesh Patel Date: Mon, 21 Dec 2020 11:15:44 +0000 Subject: [PATCH] riscv: timer: Add support for an early timer In-Reply-To: References: <20201117110508.25819-1-pragnesh.patel@sifive.com> <752D002CFF5D0F4FA35C0100F1D73F3FB23051F0@ATCPCS16.andestech.com>

Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Rick, >-----Original Message----- >From: Rick Chen >Sent: 10 December 2020 08:36 >To: Pragnesh Patel >Cc: Simon Glass ; U-Boot Mailing List boot at lists.denx.de>; Atish Patra ; Bin Meng >; Paul Walmsley ( Sifive) ; >Anup Patel ; Sagar Kadam >; Palmer Dabbelt ; rick >; Alan Kao ; Leo Liang > >Subject: Re: [PATCH] riscv: timer: Add support for an early timer > >[External Email] Do not click links or attachments unless you recognize the >sender and know the content is safe > >Hi Pragnesh > > >> Hi Rick, >> >> [...] >> >> >> >>Following are the configurations, steps and debug logs: >> >> >> >>+++ b/configs/ae350_rv64_defconfig >> >>q+CONFIG_TRACE=y >> >>+CONFIG_TRACE_BUFFER_SIZE=0x01000000 >> >>+CONFIG_TRACE_CALL_DEPTH_LIMIT=15 >> >>+CONFIG_CMD_TRACE=y >> >>+CONFIG_TIMER_EARLY=y >> >> >> >>+++ b/configs/ae350_rv64_spl_defconfig >> >>+CONFIG_TRACE=y >> >>+CONFIG_TRACE_BUFFER_SIZE=0x01000000 >> >>+CONFIG_TRACE_CALL_DEPTH_LIMIT=15 >> >>+CONFIG_CMD_TRACE=y >> >>+CONFIG_TIMER_EARLY=y >> >> >> >>//////////////////////////////////////////////// case 1 >> >>/////////////////////////////////////////////////// >> >>ae350_rv64_defconfig with FTRACE=1, kernel booting is ok >> >>//////////////////////////////////////////////// case 1 >> >>/////////////////////////////////////////////////// >> >>make FTRACE=1 ae350_rv64_defconfig >> >>make FTRACE=1 >> >>//////////////////////////////////////////////////////////////////// >> >>/// >> [...] >> >>//////////////////////////////////////////////// case 2 >> >>/////////////////////////////////////////////////// >> >>ae350_rv64_spl_defconfig with FTRACE=1, kernel booting fail >> >>//////////////////////////////////////////////// case 2 >> >>/////////////////////////////////////////////////// >> >>make FTRACE=1 ae350_rv64_spl_defconfig make FTRACE=1 >> >>//////////////////////////////////////////////////////////////////// >> >>/// >> >>/////////////// >> >>///////////////////////// >> [...] >> >>(hang here) >> > >> >Thanks for the logs. >> > >> >From logs, I can't find where it got stuck. Can you please use gdb to >> >see where it got stuck ? >> > >> >Meanwhile I will give it a try on HiFive Unleashed board. >> >> On HiFive Unleashed it works fine with tracing. >> >> U-Boot 2021.01-rc2-00049-gb2a38d1d0f (Dec 01 2020 - 15:04:41 +0530) >> CPU: rv64imafdc >> Model: SiFive HiFive Unleashed A00 >> DRAM: 8 GiB >> trace: enabled >> MMC: spi at 10050000:mmc at 0: 0 >> Loading Environment from SPIFlash... SF: Detected is25wp256 with page >> size 256 Bytes, erase size 4 KiB, total 32 MiB >> *** Warning - bad CRC, using default environment >> In: serial at 10010000 >> Out: serial at 10010000 >> Err: serial at 10010000 >> Net: eth0: ethernet at 10090000 >> Hit any key to stop autoboot: 0 >> => >> => trace stats >> 178,750 function sites >> 25,359,991 function calls >> 1 untracked function calls >> 1,278,927 traced function calls (24358307 dropped due to overflow) >> 19 maximum observed call depth >> 15 call depth limit >> 25,238,922 calls not traced due to depth => fatload mmc 0:3 >> 0x86000000 hifive-unleashed-a00.dtb >> 7199 bytes read in 27 ms (259.8 KiB/s) => fatload mmc 0:3 0x84000000 >> uImage >> 21421212 bytes read in 19496 ms (1 MiB/s) => bootm 0x84000000 - >> 0x86000000 ## Booting kernel from Legacy Image at 84000000 ... >> Image Name: Linux >> Image Type: RISC-V Linux Kernel Image (uncompressed) >> Data Size: 21421148 Bytes = 20.4 MiB >> Load Address: 80200000 >> Entry Point: 80200000 >> Verifying Checksum ... OK >> ## Flattened Device Tree blob at 86000000 >> Booting using the fdt blob at 0x86000000 >> Loading Kernel Image >> Using Device Tree in place at 0000000086000000, end >> 0000000086004c1e Starting kernel ...(fake run for tracing) Starting >> kernel ... >> [ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000 >> [ 0.000000] Linux version 5.8.0-rc3-16077-g9ebcfadb0610-dirty >(pragneshp at sachinj2-OptiPlex-7010) (riscv64-unknown-linux-gnu-gcc (crosstool- >NG 1.24.0.37-3f461da) 9.2.0, GNU ld (crosstool-NG 1.24.0.37-3f461da) 2.32) #34 >SMP Tue Jul 21 15:56:29 IST 2020 >> [ 0.000000] initrd not found or empty - disabling initrd >> [ 0.000000] Zone ranges: >> [ 0.000000] DMA32 [mem 0x0000000080200000-0x00000000ffffffff] >> [ 0.000000] Normal [mem 0x0000000100000000-0x000000027fffffff] >> [ 0.000000] Movable zone start for each node >> [ 0.000000] Early memory node ranges >> [ 0.000000] node 0: [mem 0x0000000080200000-0x000000027fffffff] >> [ 0.000000] Initmem setup node 0 [mem 0x0000000080200000- >0x000000027fffffff] >> .... >> Welcome to Buildroot >> buildroot login: root >> Password: >> > >Please check about the CI failure item Job #95.56 >https://travis-ci.org/github/rickchen36/u-boot-riscv/jobs/748298543 This is due to 'RISCV_MMODE_TIMER_FREQ' undeclared I will update "include/configs/qemu-riscv.h" in v2 as below, --- a/include/configs/qemu-riscv.h +++ b/include/configs/qemu-riscv.h @@ -29,6 +29,11 @@ #define CONFIG_STANDALONE_LOAD_ADDR 0x80200000 +#define RISCV_MMODE_TIMERBASE 0x2000000 +#define RISCV_MMODE_TIMER_FREQ 1000000 + +#define RISCV_SMODE_TIMER_FREQ 1000000 + > >Thanks, >Rick