Thanks a lot. It's working fine đ now. Abhishek.
On Sun, 19 Mar, 2023, 11:27 pm CĂ©dric Le Goater, <c...@kaod.org> wrote: > Hello Abhishek, > > On 3/18/23 18:55, Abhishek Singh Dagur wrote: > > Hi Alex , CĂ©dric, > > we have tried this *option:-serial *pty* -serial *pty* -serial *pty > *-serial *pty *-serial *pty to check the serial output on screen. > > > > Here we are providing 2 scenarios without and with the changes suggested > by @CĂ©dric Le Goater <mailto:c...@kaod.org> . > > In first we are able to get /dev/ttyS4 serial port not /dev/ttyS2 > > In second we are able to get /dev/ttyS2 not /dev/ttyS4 > > > > *Scenario1:****previously with normal qemu build i have tried emulation > as:* > > > > qemu-system-arm -m 512 -M > ast2500-evb,fmc-model=mx66u51235f,spi-model=mx66u51235f -nographic -drive > file=./pru-1.2.4_dev-rc1.static.mtd,format=raw,if=mtd -serial pty -serial > pty -serial pty -serial pty > > > > which gives us output as. > > > > QEMU 7.2.0 monitor - type 'help' for more information > > (qemu) char device redirected to /dev/pts/15 (label serial0) > > char device redirected to /dev/pts/16 (label serial1) > > char device redirected to /dev/pts/17 (label serial2) > > char device redirected to /dev/pts/18 (label serial3) > > > > so we can use *screen *to interact with the ttyS4 serial port like : > > screen /dev/pts/15 > > In which we have our boot process and shell prompt . > > > > *Scenario2:* *when I am using the newly build image with the changes > *@CĂ©dric Le Goater <mailto:c...@kaod.org>* provided* > > > > With the below command: > > ./qemu-system-arm -m 512 -M > ast2500-evb,uart-default=uart2,fmc-model=mx66u51235f,spi-model=mx66u51235f > -nographic -drive file=./pru-1.2.4_dev-rc1.static.mtd,format=raw,if=mtd > -serial pty -serial pty -serial pty -serial pty > > Since the machine expect /dev/ttyS2 to be the boot console, the SoC device > to attach to the first serial is UART3. This command line should output > the console logs in the same terminal : > > ./qemu-system-arm -m 512 -M > ast2500-evb,uart-default=uart3,fmc-model=mx66u51235f,spi-model=mx66u51235f > -net user -nographic -drive > file=./pru-1.2.4_dev-rc1.static.mtd,format=raw,if=mtd -serial mon:stdio > > I have updated the patch in my aspeed-8.0 tree : > > > https://github.com/legoater/qemu/commit/20fe705361dd7ed1d9129747a8a0b643410869e3 > > Please note that in this last version, the machine option is simply "uart". > > Thanks, > > C. >
