Xen ARM with Virtualization Extensions/OMAP5432 uEVM: Difference between revisions
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OMAP5430 EVM # setenv xen_bootargs 'sync_console console=dtuart dtuart=serial2' |
OMAP5430 EVM # setenv xen_bootargs 'sync_console console=dtuart dtuart=serial2' |
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OMAP5430 EVM # setenv dom0_bootargs 'console=hvc0,115200n8 earlyprintk=xen debug ignore_loglevel root=/dev/mmcblk0p2 rw rootwait fixrtc' |
OMAP5430 EVM # setenv dom0_bootargs 'console=hvc0,115200n8 earlyprintk=xen debug ignore_loglevel root=/dev/mmcblk0p2 rw rootwait fixrtc' |
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OMAP5430 EVM # fatload mmc 0:1 $dtb_addr_r |
OMAP5430 EVM # fatload mmc 0:1 $dtb_addr_r omap5-uevm.dtb |
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OMAP5430 EVM # fatload mmc 0:1 $xen_addr_r xen-uImage |
OMAP5430 EVM # fatload mmc 0:1 $xen_addr_r xen-uImage |
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OMAP5430 EVM # fatload mmc 0:1 $kernel_addr_r zImage |
OMAP5430 EVM # fatload mmc 0:1 $kernel_addr_r zImage |
Revision as of 07:16, 4 May 2014
The OMAP5432 uEVM board is now supported in Xen upstream.
1. Prepare U-boot
Xen hypervisor requires to be booted in HYP mode by the bootloader. Make sure that the U-boot you use would keep staying in HYP mode when switching the control to Xen.
2. Build Xen and Linux Dom0
2.1 Build Xen hypervisor
Build Xen:
# git clone git://xenbits.xen.org/xen.git # cd xen # make dist-xen XEN_TARGET_ARCH=arm32 CROSS_COMPILE=arm-linux-gnueabihf- CONFIG_EARLY_PRINTK=omap5432
Create uImage for Xen:
# mkimage -A arm -T kernel -a 0x80200000 -e 0x80200000 -C none -d "xen/xen" xen-uImage
2.2 Build Linux Dom0 kernel
Get the linux kernel source from upstream:
# git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Use the default ‘omap2plus' as the base config:
# make omap2plus_defconfig ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
Before adding the XEN related kernel configs, disable old omap SoCs support by unselecting the TI OMAP2/3/4 in the ‘System Type’ section of kernel configuration menus (by running ‘make menuconfig ARCH=arm’).
Adding the following config entries in .config and run ‘make olddefconfig ARCH=arm’:
CONFIG_XEN_DOM0=y CONFIG_XEN=y CONFIG_XEN_BLKDEV_FRONTEND=y CONFIG_XEN_BLKDEV_BACKEND=y CONFIG_XEN_NETDEV_FRONTEND=y CONFIG_XEN_NETDEV_BACKEND=y CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y CONFIG_HVC_XEN=y CONFIG_HVC_XEN_FRONTEND=y CONFIG_XEN_DEV_EVTCHN=y CONFIG_XEN_BACKEND=y CONFIG_XENFS=y CONFIG_XEN_COMPAT_XENFS=y CONFIG_XEN_SYS_HYPERVISOR=y CONFIG_XEN_XENBUS_FRONTEND=y CONFIG_XEN_GNTDEV=y CONFIG_XEN_GRANT_DEV_ALLOC=y CONFIG_XEN_PRIVCMD=y
Build the kernel:
# make zImage ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
2.3 Build FDT
Apply the patch below to the upstream linux kernel and build the device tree blob.
diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts index 3b99ec2..db58879 100644 --- a/arch/arm/boot/dts/omap5-uevm.dts +++ b/arch/arm/boot/dts/omap5-uevm.dts @@ -199,7 +199,7 @@ }; &mmc1 { - vmmc-supply = <&ldo9_reg>; + vmmc-supply = <&vmmcsd_fixed>; bus-width = <4>; }; @@ -214,14 +214,6 @@ ti,non-removable; }; -&mmc4 { - status = "disabled"; -}; - -&mmc5 { - status = "disabled"; -}; - &i2c1 { pinctrl-names = "default"; pinctrl-0 = <&i2c1_pins>; @@ -436,10 +428,6 @@ clock-frequency = <400000>; }; -&mcbsp3 { - status = "disabled"; -}; - &usbhshost { port2-mode = "ehci-hsic"; port3-mode = "ehci-hsic”; diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi index f8c9855..82d91ba 100644 --- a/arch/arm/boot/dts/omap5.dtsi +++ b/arch/arm/boot/dts/omap5.dtsi @@ -80,6 +80,7 @@ <GIC_PPI 14 (GIC_CPU_MASK_RAW(3) | IRQ_TYPE_LEVEL_LOW)>, <GIC_PPI 11 (GIC_CPU_MASK_RAW(3) | IRQ_TYPE_LEVEL_LOW)>, <GIC_PPI 10 (GIC_CPU_MASK_RAW(3) | IRQ_TYPE_LEVEL_LOW)>; + clock-frequency = <6144000>; }; gic: interrupt-controller@48211000 { @@ -90,6 +91,7 @@ <0x48212000 0x1000>, <0x48214000 0x2000>, <0x48216000 0x2000>; + interrupts = <1 9 0xf04>; }; /* @@ -582,7 +584,6 @@ ti,hwmods = "dmic"; dmas = <&sdma 67>; dma-names = "up_link"; - status = "disabled"; }; mcbsp1: mcbsp@40122000 { @@ -597,7 +598,6 @@ dmas = <&sdma 33>, <&sdma 34>; dma-names = "tx", "rx"; - status = "disabled"; }; mcbsp2: mcbsp@40124000 { @@ -612,7 +612,6 @@ dmas = <&sdma 17>, <&sdma 18>; dma-names = "tx", "rx"; - status = "disabled"; }; mcbsp3: mcbsp@40126000 { @@ -627,7 +626,6 @@ dmas = <&sdma 19>, <&sdma 20>; dma-names = "tx", "rx"; - status = "disabled"; }; timer1: timer@4ae18000 {
2.4 All together
Now we should have 3 files as following:
- xen-uImage
- zImage
- omap5-uevm.dtb
Then copy all these 3 files to the /boot partition of your MICRO-SD card.
3. Boot Xen and Dom0
Use the following U-boot command sequence to boot Xen & dom0:
OMAP5430 EVM # setenv dtb_addr_r 0x825f0000 OMAP5430 EVM # setenv xen_addr_r 0x90000000 OMAP5430 EVM # setenv kernel_addr_r 0xa0000000 OMAP5430 EVM # setenv xen_bootargs 'sync_console console=dtuart dtuart=serial2' OMAP5430 EVM # setenv dom0_bootargs 'console=hvc0,115200n8 earlyprintk=xen debug ignore_loglevel root=/dev/mmcblk0p2 rw rootwait fixrtc' OMAP5430 EVM # fatload mmc 0:1 $dtb_addr_r omap5-uevm.dtb OMAP5430 EVM # fatload mmc 0:1 $xen_addr_r xen-uImage OMAP5430 EVM # fatload mmc 0:1 $kernel_addr_r zImage OMAP5430 EVM # fdt addr $dtb_addr_r OMAP5430 EVM # fdt resize OMAP5430 EVM # fdt set /chosen xen,xen-bootargs \"$xen_bootargs\" OMAP5430 EVM # fdt resize OMAP5430 EVM # fdt set /chosen xen,dom0-bootargs \"$dom0_bootargs\" OMAP5430 EVM # fdt mknode /chosen modules OMAP5430 EVM # fdt set /chosen/modules '#address-cells' <1> OMAP5430 EVM # fdt set /chosen/modules '#size-cells' <1> OMAP5430 EVM # fdt mknode /chosen/modules module@0 OMAP5430 EVM # fdt set /chosen/modules/module@0 compatible xen,linux-zimage xen,multiboot-module OMAP5430 EVM # fdt set /chosen/modules/module@0 reg <$kernel_addr_r 0xa00000> OMAP5430 EVM # bootm $xen_addr_r - $dtb_addr_r