ARC: nsim_hs38: Add support of Virtio NET & BLK

Given now nsim_hs38 configuration is usable on QEMU and in QEMU
we have Virtio working perfectly fine the next logical step
is to add support of supported & known to work net & bkl to this
config.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 0cb9720..545fc3e 100644 (file)
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -160,7 +160,7 @@ config TARGET_TB100
        bool "Support tb100"
 
 config TARGET_NSIM
-       bool "Support standalone nSIM & Free nSIM"
+       bool "Support ARC simulation & prototyping platforms"
 
 config TARGET_AXS101
        bool "Support Synopsys Designware SDP board AXS101"
@@ -184,10 +184,10 @@ config TARGET_IOT_DEVKIT
 endchoice
 
 source "board/abilis/tb100/Kconfig"
-source "board/synopsys/Kconfig"
 source "board/synopsys/axs10x/Kconfig"
 source "board/synopsys/emsdp/Kconfig"
 source "board/synopsys/hsdk/Kconfig"
 source "board/synopsys/iot_devkit/Kconfig"
+source "board/synopsys/nsim/Kconfig"
 
 endmenu

diff --git a/arch/arc/dts/nsim.dts b/arch/arc/dts/nsim.dts
index 43f281d..c2899ef 100644 (file)
--- a/arch/arc/dts/nsim.dts
+++ b/arch/arc/dts/nsim.dts
@@ -30,4 +30,28 @@
                clock-frequency = <70000000>;
        };
 
+       virtio0: virtio@f0100000 {
+               compatible = "virtio,mmio";
+               reg = <0xf0100000 0x2000>;
+       };
+
+       virtio1: virtio@f0102000 {
+               compatible = "virtio,mmio";
+               reg = <0xf0102000 0x2000>;
+       };
+
+       virtio2: virtio@f0104000 {
+               compatible = "virtio,mmio";
+               reg = <0xf0104000 0x2000>;
+       };
+
+       virtio3: virtio@f0106000 {
+               compatible = "virtio,mmio";
+               reg = <0xf0106000 0x2000>;
+       };
+
+       virtio4: virtio@f0108000 {
+               compatible = "virtio,mmio";
+               reg = <0xf0108000 0x2000>;
+       };
 };

diff --git a/board/synopsys/Kconfig b/board/synopsys/nsim/Kconfig
similarity index 74%
rename from board/synopsys/Kconfig
rename to board/synopsys/nsim/Kconfig
index 27e5509..2228703 100644 (file)
--- a/board/synopsys/Kconfig
+++ b/board/synopsys/nsim/Kconfig
@@ -1,5 +1,8 @@
 if TARGET_NSIM
 
+config SYS_BOARD
+       default "nsim"
+
 config SYS_VENDOR
        default "synopsys"
 

diff --git a/board/synopsys/nsim/MAINTAINERS b/board/synopsys/nsim/MAINTAINERS
new file mode 100644 (file)
index 0000000..ad23c83
--- /dev/null
+++ b/board/synopsys/nsim/MAINTAINERS
@@ -0,0 +1,6 @@
+ARC SIMULATION & PROTOTYPING PLATFORMS
+M:     Alexey Brodkin <abrodkin@synopsys.com>
+S:     Maintained
+F:     arch/arc/dts/nsim.dts
+F:     board/synopsys/nsim/
+F:     configs/nsim_*_defconfig

diff --git a/board/synopsys/nsim/Makefile b/board/synopsys/nsim/Makefile
new file mode 100644 (file)
index 0000000..6aaffff
--- /dev/null
+++ b/board/synopsys/nsim/Makefile
@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2020 Synopsys, Inc. All rights reserved.
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+obj-y  += nsim.o

diff --git a/board/synopsys/nsim/nsim.c b/board/synopsys/nsim/nsim.c
new file mode 100644 (file)
index 0000000..f384f70
--- /dev/null
+++ b/board/synopsys/nsim/nsim.c
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Synopsys, Inc. All rights reserved.
+ */
+
+#include <common.h>
+#include <dm/device.h>
+#include <virtio_types.h>
+#include <virtio.h>
+
+int board_early_init_r(void)
+{
+       /*
+        * Make sure virtio bus is enumerated so that peripherals
+        * on the virtio bus can be discovered by their drivers
+        */
+       virtio_init();
+
+       return 0;
+}
+
+int checkboard(void)
+{
+       printf("Board: ARC virtual or prototyping platform\n");
+       return 0;
+};

diff --git a/configs/nsim_hs38_defconfig b/configs/nsim_hs38_defconfig
index ce68de3..6cd01a5 100644 (file)
--- a/configs/nsim_hs38_defconfig
+++ b/configs/nsim_hs38_defconfig
@@ -9,14 +9,23 @@ CONFIG_DEBUG_UART=y
 CONFIG_BOOTDELAY=3
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="console=ttyS0,115200n8"
+CONFIG_BOARD_EARLY_INIT_R=y
 CONFIG_SYS_PROMPT="nsim# "
+CONFIG_CMD_DM=y
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_DHCP=y
 CONFIG_OF_CONTROL=y
 CONFIG_OF_EMBED=y
 CONFIG_DEFAULT_DEVICE_TREE="nsim"
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_DM=y
+CONFIG_BLK=y
+CONFIG_HAVE_BLOCK_DEVICE=y
+CONFIG_DM_ETH=y
 CONFIG_DM_SERIAL=y
 CONFIG_DEBUG_UART_SHIFT=2
 CONFIG_SYS_NS16550=y
+CONFIG_VIRTIO_MMIO=y
+CONFIG_VIRTIO_NET=y
+CONFIG_VIRTIO_BLK=y
 CONFIG_USE_PRIVATE_LIBGCC=y