Hello,
On Wed, Oct 23, 2019 at 11:54:44AM +0200, Mateusz Holenko wrote:
> From: Filip Kokosinski <fkokosinski@xxxxxxxxxxxxxxxxxxxxxxxx>
>
> This adds support for a basic LiteX-based SoC with a mor1kx soft CPU.
Thanks for getting these patches ready.
> Signed-off-by: Filip Kokosinski <fkokosinski@xxxxxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Mateusz Holenko <mholenko@xxxxxxxxxxxx>
> ---
> MAINTAINERS | 1 +
> arch/openrisc/boot/dts/or1klitex.dts | 49 +++++++++++++++++++++++
> arch/openrisc/configs/or1klitex_defconfig | 18 +++++++++
> 3 files changed, 68 insertions(+)
> create mode 100644 arch/openrisc/boot/dts/or1klitex.dts
> create mode 100644 arch/openrisc/configs/or1klitex_defconfig
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index c24a37833e78..e84b2cb4c186 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -9500,6 +9500,7 @@ S: Maintained
> F: include/linux/litex.h
> F: Documentation/devicetree/bindings/*/litex,*.yaml
> F: drivers/tty/serial/liteuart.c
> +F: arch/openrisc/boot/dts/or1klitex.dts
>
> LIVE PATCHING
> M: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
> diff --git a/arch/openrisc/boot/dts/or1klitex.dts b/arch/openrisc/boot/dts/or1klitex.dts
> new file mode 100644
> index 000000000000..63399398002d
> --- /dev/null
> +++ b/arch/openrisc/boot/dts/or1klitex.dts
> @@ -0,0 +1,49 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * LiteX-based System on Chip
> + *
> + * Copyright (C) 2019 Antmicro Ltd <www.antmicro.com>
> + */
> +
> +/dts-v1/;
> +/ {
> + compatible = "opencores,or1ksim";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + interrupt-parent = <&pic>;
> +
> + aliases {
> + serial0 = &serial0;
> + };
> +
> + chosen {
> + bootargs = "console=liteuart";
As this depents on litex uart I will wait to queue this until it looks like the
uart patches are accepted for 5.5 merge window.
> + };
> +
> + memory@0 {
> + device_type = "memory";
> + reg = <0x00000000 0x10000000>;
> + };
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + cpu@0 {
> + compatible = "opencores,or1200-rtlsvn481";
> + reg = <0>;
> + clock-frequency = <100000000>;
> + };
> + };
> +
> + pic: pic {
> + compatible = "opencores,or1k-pic";
> + #interrupt-cells = <1>;
> + interrupt-controller;
> + };
> +
> + serial0: serial@e0001800 {
> + device_type = "serial";
> + compatible = "litex,liteuart";
> + reg = <0xe0001800 0x100>;
> + };
> +};
> diff --git a/arch/openrisc/configs/or1klitex_defconfig b/arch/openrisc/configs/or1klitex_defconfig
> new file mode 100644
> index 000000000000..0e4c2e74451c
> --- /dev/null
> +++ b/arch/openrisc/configs/or1klitex_defconfig
> @@ -0,0 +1,18 @@
> +CONFIG_BLK_DEV_INITRD=y
> +CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
> +CONFIG_BUG_ON_DATA_CORRUPTION=y
> +CONFIG_CC_OPTIMIZE_FOR_SIZE=y
> +CONFIG_CROSS_COMPILE="or32-linux-"
We use or1k-linux- now. Is this what you really use?
> +CONFIG_DEVTMPFS=y
> +CONFIG_DEVTMPFS_MOUNT=y
> +CONFIG_EMBEDDED=y
> +CONFIG_HZ_100=y
> +CONFIG_INITRAMFS_SOURCE="openrisc-rootfs.cpio.gz"
> +CONFIG_OF_OVERLAY=y
> +CONFIG_OPENRISC_BUILTIN_DTB="or1klitex"
> +CONFIG_PANIC_ON_OOPS=y
> +CONFIG_PRINTK_TIME=y
> +CONFIG_SERIAL_LITEUART=y
> +CONFIG_SERIAL_LITEUART_CONSOLE=y
Note, Litex uart dependency lookds fine nere.
> +CONFIG_SOFTLOCKUP_DETECTOR=y
> +CONFIG_TTY_PRINTK=y
> --
> 2.23.0
>
-Stafford
