[PATCH 00/26] ppc: qemu: Convert qemu-ppce500 to driver model
Bin Meng
bmeng.cn at gmail.com
Wed Feb 10 01:36:33 CET 2021
On Sun, Feb 7, 2021 at 11:11 PM Bin Meng <bmeng.cn at gmail.com> wrote:
>
> At present when building qemu-ppce500 the following warnings are seen:
>
> ===================== WARNING ======================
> This board does not use CONFIG_DM. CONFIG_DM will be
> compulsory starting with the v2020.01 release.
> Failure to update may result in board removal.
> UPD include/generated/timestamp_autogenerated.h
> See doc/driver-model/migration.rst for more info.
> ====================================================
> ===================== WARNING ======================
> This board does not use CONFIG_DM_PCI Please update
> the board to use CONFIG_DM_PCI before the v2019.07 release.
> Failure to update by the deadline may result in board removal.
> See doc/driver-model/migration.rst for more info.
> ====================================================
> ===================== WARNING ======================
> This board does not use CONFIG_DM_ETH (Driver Model
> for Ethernet drivers). Please update the board to use
> CONFIG_DM_ETH before the v2020.07 release. Failure to
> update by the deadline may result in board removal.
> See doc/driver-model/migration.rst for more info.
> ====================================================
>
> The conversion of qemu-ppce500 board to driver model is long overdue.
>
> When testing the exisitng qemu-ppce500 support, PCI was found broken.
> This is caused by 2 separate issues:
>
> - One issue was caused by U-Boot:
> Commit e002474158d1 ("pci: pci-uclass: Dynamically allocate the PCI regions")
> Patch #1 reverts this commit as it broken all boards that have not converted
> to driver model PCI.
> - One issue was caused by QEMU:
> commit e6b4e5f4795b ("PPC: e500: Move CCSR and MMIO space to upper end of address space")
> commit cb3778a0455a ("PPC: e500 pci host: Add support for ATMUs")
> Patch #3-4 fixed this issue to keep in sync with latest QEMU upstream
>
> Patch #5-8 are minor fixes and clean-ups.
>
> Starting from patch#9, these are driver model conversion patches.
>
> Patch #11-16 are mainly related to CONFIG_ADDR_MAP, a library to support targets
> that have non-identity virtual-physical address mappings. A new command 'addrmap'
> is introduced to aid debugging, and a fix to arch/powerpc/asm/include/io.h is
> made to correct the usage of CONFIG_ADDR_MAP as it can only be used in the post-
> relocation phase. Also the initialization of this library is moved a bit earlier
> in the post-relocation phase otherwise device drivers won't work.
>
> Patch #18-20 are 85xx PCI driver fixes. It adds support to controller register
> physical address beyond 32-bit, as well as support to 64-bit bus and cpu address
> as current upstream QEMU uses 64-bit cpu address.
>
> Patch #23 is minor fix to the 'virtio' command dependency.
>
> Patch #24 enables the VirtIO NET support as by default a VirtIO standard PCI
> networking device is connected as an ethernet interface at PCI address 0.1.0.
>
> Patch #25 moves the qemu-ppce500 boards codes to board/emulation as that is the
> place for other QEMU targets like x86, arm, riscv.
>
> Patch #26 adds a reST document to describe how to build and run U-Boot for the
> QEMU ppce500 machine.
>
> I hope we can make this series to U-Boot v2021.04 release.
>
> This series is available at u-boot-x86/qemu-ppc for testing.
>
> This cover letter is cc'ed to QEMU mailing list for a heads-up.
> A future patch will be sent to QEMU mailing list to bring its in-tree
> U-Boot source codes up-to-date.
>
>
> Bin Meng (26):
> Revert "pci: pci-uclass: Dynamically allocate the PCI regions"
> ppc: qemu: Update MAINTAINERS for correct email address
> common: fdt_support: Support special case of PCI address in
> fdt_read_prop()
> ppc: qemu: Support non-identity PCI bus address
> ppc: qemu: Fix CONFIG_SYS_PCI_MAP_END
> ppc: mpc85xx: Wrap LAW related codes with CONFIG_FSL_LAW
> ppc: qemu: Drop init_laws() and print_laws()
> ppc: qemu: Drop board_early_init_f()
> ppc: qemu: Enable OF_CONTROL
> ppc: qemu: Enable driver model
> include: Remove extern from addr_map.h
> lib: addr_map: Move address_map[] type to the header file
> cmd: Add a command to display the address map
> lib: kconfig: Mention CONFIG_ADDR_MAP limitation in the help
> ppc: io.h: Use addrmap_ translation APIs only in post-relocation phase
> common: Move initr_addr_map() to a bit earlier
> ppc: qemu: Switch over to use DM serial
> pci: mpc85xx: Wrap LAW programming with CONFIG_FSL_LAW
> pci: mpc85xx: Support controller register physical address beyond
> 32-bit
> pci: mpc85xx: Support 64-bit bus and cpu address
> ppc: qemu: Switch over to use DM ETH and PCI
> ppc: qemu: Drop CONFIG_OF_BOARD_SETUP
> cmd: Fix virtio command dependency
> ppc: qemu: Enable VirtIO NET support
> ppc: qemu: Move board directory from board/freescale to
> board/emulation
> doc: Add a reST document for qemu-ppce500
>
> arch/powerpc/cpu/mpc85xx/Kconfig | 2 +-
> arch/powerpc/cpu/mpc85xx/cpu.c | 2 +
> arch/powerpc/cpu/mpc85xx/cpu_init_early.c | 2 +
> arch/powerpc/include/asm/io.h | 15 +-
> .../{freescale => emulation}/qemu-ppce500/Kconfig | 2 +-
> board/emulation/qemu-ppce500/MAINTAINERS | 7 +
> .../{freescale => emulation}/qemu-ppce500/Makefile | 0
> .../qemu-ppce500/qemu-ppce500.c | 159 ++++++---------------
> board/freescale/qemu-ppce500/MAINTAINERS | 6 -
> cmd/Kconfig | 8 ++
> cmd/Makefile | 1 +
> cmd/addrmap.c | 35 +++++
> common/board_r.c | 6 +-
> common/fdt_support.c | 15 +-
> configs/qemu-ppce500_defconfig | 14 +-
> doc/board/emulation/index.rst | 1 +
> doc/board/emulation/qemu-ppce500.rst | 73 ++++++++++
> drivers/pci/pci-uclass.c | 14 +-
> drivers/pci/pci_mpc85xx.c | 25 ++--
> include/addr_map.h | 16 ++-
> include/configs/qemu-ppce500.h | 25 +---
> include/pci.h | 4 +-
> lib/Kconfig | 2 +
> lib/addr_map.c | 6 +-
> 24 files changed, 250 insertions(+), 190 deletions(-)
> rename board/{freescale => emulation}/qemu-ppce500/Kconfig (86%)
> create mode 100644 board/emulation/qemu-ppce500/MAINTAINERS
> rename board/{freescale => emulation}/qemu-ppce500/Makefile (100%)
> rename board/{freescale => emulation}/qemu-ppce500/qemu-ppce500.c (68%)
> delete mode 100644 board/freescale/qemu-ppce500/MAINTAINERS
> create mode 100644 cmd/addrmap.c
> create mode 100644 doc/board/emulation/qemu-ppce500.rst
>
Alex, Priyanka, do you have some time to review this series?
Regards,
Bin
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