Re: [Qemu-devel] [PATCH v2] tests/boot_linux_console: add a test for riscv64 + virt

[Philippe Mathieu-Daudé]

On 7/15/19 1:09 PM, Chih-Min Chao wrote:
> On Mon, Jul 15, 2019 at 5:15 PM Philippe Mathieu-Daudé
> <address@hidden <mailto:address@hidden>> wrote:
> 
>     On 7/15/19 11:08 AM, Chih-Min Chao wrote:
>     > Similar to the mips + malta test, it boots a Linux kernel on a virt
>     > board and verify the serial is working.  Also, it relies on the serial
>     > device set by the machine itself.
>     >
>     > If riscv64 is a target being built, "make check-acceptance" will
>     > automatically include this test by the use of the "arch:riscv64" tags.
>     >
>     > Alternatively, this test can be run using:
>     >
>     >   $ avocado run -t arch:riscv64 tests/acceptance
>     >
>     > packages
>     >   debian official
>     >     binutils-riscv64-linux-gnu_2.32-8
>     >     opensbi_0.4-1_all
>     >     linux-image-4.19.0-5-riscv64 4.19.37-4
>     >   third-party
>     >   
>      https://github.com/groeck/linux-build-test/rootfs/riscv64/rootfs.cpio.gz
>     >     (the repo is also used in mips target acceptance)
>     >
>     > Signed-off-by: Chih-Min Chao <address@hidden
>     <mailto:address@hidden>>
>     > ---
>     >  .travis.yml                            |  2 +-
>     >  tests/acceptance/boot_linux_console.py | 66
>     ++++++++++++++++++++++++++++++++++
>     >  2 files changed, 67 insertions(+), 1 deletion(-)
>     >
>     > diff --git a/.travis.yml b/.travis.yml
>     > index 5d3d6ee..21fcead 100644
>     > --- a/.travis.yml
>     > +++ b/.travis.yml
>     > @@ -232,7 +232,7 @@ matrix:
>     > 
>     >      # Acceptance (Functional) tests
>     >      - env:
>     > -        - CONFIG="--python=/usr/bin/python3
>     
> --target-list=x86_64-softmmu,mips-softmmu,mips64el-softmmu,aarch64-softmmu,arm-softmmu,s390x-softmmu,alpha-softmmu"
>     > +        - CONFIG="--python=/usr/bin/python3
>     
> --target-list=x86_64-softmmu,mips-softmmu,mips64el-softmmu,aarch64-softmmu,arm-softmmu,s390x-softmmu,alpha-softmmu,riscv64-softmmu"
>     >          - TEST_CMD="make check-acceptance"
>     >        after_failure:
>     >          - cat tests/results/latest/job.log
>     > diff --git a/tests/acceptance/boot_linux_console.py
>     b/tests/acceptance/boot_linux_console.py
>     > index 3215950..0f638bc 100644
>     > --- a/tests/acceptance/boot_linux_console.py
>     > +++ b/tests/acceptance/boot_linux_console.py
>     > @@ -354,3 +354,69 @@ class BootLinuxConsole(Test):
>     >          self.vm.launch()
>     >          console_pattern = 'Kernel command line: %s' %
>     kernel_command_line
>     >          self.wait_for_console_pattern(console_pattern)
>     > +
>     > +    def test_riscv64_virt(self):
>     > +        """
>     > +        :avocado: tags=arch:riscv64
>     > +        :avocado: tags=machine:virt
>     > +        """
>     > +        deb_url = ('https://snapshot.debian.org/archive/debian/'
>     > +                         '20190424T171759Z/pool/main/b/binutils/'
>     > +                       
>      'binutils-riscv64-linux-gnu_2.32-8_amd64.deb')
>     > +        deb_hash = ('7fe376fd4452696c03acd508d6d613ca553ea15e')
>     > +        deb_path = self.fetch_asset(deb_url, asset_hash=deb_hash)
>     > +        objcopy_path = '/usr/bin/riscv64-linux-gnu-objcopy'
>     > +        objcopy_path = self.extract_from_deb(deb_path, objcopy_path)
>     > +        libbfd_path =
>     '/usr/lib/x86_64-linux-gnu/libbfd-2.32-riscv64.so
>     <http://libbfd-2.32-riscv64.so>'
>     > +        libbfd_path = self.extract_from_deb(deb_path, libbfd_path)
>     > +        process.run('ls -al %s' % (objcopy_path))
>     > +
>     > +        deb_url = ('https://snapshot.debian.org/archive/debian/'
>     > +                   '20190708T032337Z/pool/main/o/opensbi/'
>     > +                   'opensbi_0.4-1_all.deb')
>     > +        deb_hash = ('2319dcd702958291d323acf5649fd98a11d90112')
>     > +        deb_path = self.fetch_asset(deb_url, asset_hash=deb_hash)
>     > +        opensbi_path = ('/usr/lib/riscv64-linux-gnu/opensbi/'
>     > +                        'qemu/virt/fw_jump.elf')
>     > +        opensbi_path = self.extract_from_deb(deb_path, opensbi_path)
>     > +
>     > +        deb_url =
>     ('https://snapshot.debian.org/archive/debian-ports/'
>     > +                   '20190620T095935Z/pool-riscv64/main/l/linux/'
>     > +                 
>      'linux-image-4.19.0-5-riscv64_4.19.37-4_riscv64.deb')
>     > +        deb_hash = ('bf5b5680c41d92134d22caef4fbd277c5217e1f0')
>     > +        deb_path = self.fetch_asset(deb_url, asset_hash=deb_hash)
>     > +        kernel_path = '/boot/vmlinux-4.19.0-5-riscv64'
>     > +        kernel_path = self.extract_from_deb(deb_path, kernel_path)
>     > +        kimage_path = self.workdir + "/Image"
>     > +        env = os.environ
>     > +        env['LD_LIBRARY_PATH'] = ('%s:' %
>     (os.path.dirname(libbfd_path)) +
>     > +                                 env.get('LD_LIBRARY_PATH', ''))
>     > +        process.run(('%s -O binary -O binary -R'
>     > +                     '.note -R .note.gnu.build-id -R .comment -S
>     %s %s') %
>     > +                     (objcopy_path, kernel_path, kimage_path))
> 
>     Please explain why you need to do that...
> 
>     Also note these tests are run on other host architecture than x86, at
>     least ppc64/s390x (so this won't work there).
> 
> it is because riscv64 vmlinux doesn't have physical loading address
> information and 
> depends on certain stage bootloader to move kernel raw data to specific
> physical address (0x8020_0000)
> 
> The vmlinux program headers are 
>   Type             Offset       VirtAddr                  PhysAddr      
>     FileSiz  MemSiz   Flg Align
>   LOAD           0x001000 0xffffffe000000000 0x0000000000000000 0x0303a6
> 0x0303a6 R E 0x1000
>   LOAD           0x032000 0xffffffe000031000 0x0000000000031000 0x828f0c
> 0x828f0c RWE 0x1000
>   NOTE           0x85aec0 0xffffffe000859ec0 0x0000000000859ec0 0x00004c
> 0x00004c R   0x4
> 
> For legacy bootloader, bbl, It can handle payload in ELF format. 
> However, for the newer OpenSBI, it can only handle raw data and
> debian doesn't provide linux image in raw data format.

I think you should be able to use -device loader,file=... here, then no
need to use objcopy.

Cc'ing Alistair who is an expert on this.

>     > +
>     > +        initrd_url =
>     ('https://github.com/groeck/linux-build-test/raw/'
>     > +                     
>     '8584a59ed9e5eb5ee7ca91f6d74bbb06619205b8/rootfs/'
>     > +                      'riscv64/rootfs.cpio.gz')
>     > +        initrd_hash = 'f4867d263754961b6f626cdcdc0cb334c47e3b49'
>     > +        initrd_path = self.fetch_asset(initrd_url,
>     asset_hash=initrd_hash)
>     > +
>     > +        self.vm.set_machine('virt')
>     > +        self.vm.set_console()
>     > +        kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE
>     > +                               + 'console=ttyS0 noreboot')
>     > +        self.vm.add_args('-bios', opensbi_path,
>     > +                         '-kernel', kimage_path,
>     > +                         '-initrd', initrd_path,
>     > +                         '-append', kernel_command_line,
>     > +                         '-no-reboot')
>     > +
>     > +        self.vm.launch()
>     > +        self.wait_for_console_pattern('Boot successful.')
>     > +
>     > +        self.exec_command_and_wait_for_pattern('cat /proc/cpuinfo',
>     > +                                               'isa')
>     > +        self.exec_command_and_wait_for_pattern('uname -a',
>     > +                                               'SMP Debian')
>     > +        self.exec_command_and_wait_for_pattern('reboot',
>     > +                                               'reboot:
>     Restarting system')
>     >
>