Commit a570dea8 authored by Waldemar Brodkorb's avatar Waldemar Brodkorb Committed by Thomas Petazzoni
Browse files

configs: add new configuration for qemu-system-xtensa 

Tested with Qemu 2.0.0.
Overlay is from
https://github.com/jcmvbkbc/xtensa-toolchain-build/tree/master/overlays



Many thanks to Max Filippov <jcmvbkbc@gmail.com> for his extended help
and kernel config examples.

A small kernel patch is required, because mkimage does not contain
support for Xtensa and the uImage target is failing. Redboot is unused
so disable it, too.

Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
parent c78d5763

board/qemu/xtensa-lx60/linux-3.15.config

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# CONFIG_SWAP is not set

CONFIG_BLK_DEV_INITRD=y

CONFIG_XTENSA_VARIANT_DC232B=y

# CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX is not set

CONFIG_XTENSA_PLATFORM_XTFPGA=y

CONFIG_CMDLINE_BOOL=y

CONFIG_CMDLINE="console=ttyS0,38400"

# CONFIG_COMPACTION is not set

# CONFIG_BOUNCE is not set

# CONFIG_CROSS_MEMORY_ATTACH is not set

# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set

CONFIG_NET=y

CONFIG_PACKET=y

CONFIG_UNIX=y

CONFIG_INET=y

# CONFIG_INET_XFRM_MODE_TRANSPORT is not set

# CONFIG_INET_XFRM_MODE_TUNNEL is not set

# CONFIG_INET_XFRM_MODE_BEET is not set

# CONFIG_INET_LRO is not set

# CONFIG_INET_DIAG is not set

# CONFIG_IPV6 is not set

# CONFIG_WIRELESS is not set

CONFIG_DEVTMPFS=y

CONFIG_DEVTMPFS_MOUNT=y

CONFIG_NETDEVICES=y

# CONFIG_WLAN is not set

CONFIG_SERIAL_8250=y

# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set

CONFIG_SERIAL_8250_CONSOLE=y

# CONFIG_HW_RANDOM is not set

# CONFIG_HWMON is not set

# CONFIG_VGA_CONSOLE is not set

# CONFIG_S32C1I_SELFTEST is not set

CONFIG_LD_NO_RELAX=y

board/qemu/xtensa-lx60/linux/linux-0001-disable-redboot-and-uboot.patch

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disable boot-uboot and boot-redboot, requires a patched u-boot and mkimage



Signed-off-by:Waldemar Brodkorb <wbx@openadk.org>



diff -Nur linux-3.15.orig/arch/xtensa/boot/Makefile linux-3.15/arch/xtensa/boot/Makefile

--- linux-3.15.orig/arch/xtensa/boot/Makefile	2014-06-08 20:19:54.000000000 +0200

+++ linux-3.15/arch/xtensa/boot/Makefile	2014-06-14 20:07:15.206091165 +0200

@@ -23,7 +23,7 @@

 

 bootdir-$(CONFIG_XTENSA_PLATFORM_ISS)	 += boot-elf

 bootdir-$(CONFIG_XTENSA_PLATFORM_XT2000) += boot-redboot boot-elf boot-uboot

-bootdir-$(CONFIG_XTENSA_PLATFORM_XTFPGA) += boot-redboot boot-elf boot-uboot

+bootdir-$(CONFIG_XTENSA_PLATFORM_XTFPGA) += boot-elf

 

 zImage Image: $(bootdir-y)

board/qemu/xtensa-lx60/readme.txt

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Run the emulation with:



 qemu-system-xtensa -M lx60 -cpu dc232b -monitor null -nographic -kernel output/images/Image.elf



The login prompt will appear in the terminal that started Qemu.



Tested with QEMU 2.0.0

board/qemu/xtensa-lx60/xtensa_dc232b.tar

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+730 KiB

File added.

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configs/qemu_xtensa_lx60_defconfig

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# Architecture

BR2_xtensa=y

BR2_XTENSA_CUSTOM=y

BR2_XTENSA_CUSTOM_NAME="dc232b"

BR2_XTENSA_CORE_NAME="lx60"

BR2_XTENSA_OVERLAY_DIR="board/qemu/xtensa-lx60"



BR2_GLOBAL_PATCH_DIR="board/qemu/xtensa-lx60"



# System

BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"



# Filesystem

# BR2_TARGET_ROOTFS_TAR is not set

BR2_TARGET_ROOTFS_INITRAMFS=y



# Lock to 3.15 headers to avoid breaking with newer kernels

BR2_KERNEL_HEADERS_VERSION=y

BR2_DEFAULT_KERNEL_VERSION="3.15.5"

BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_15=y



# Kernel

BR2_LINUX_KERNEL=y

BR2_LINUX_KERNEL_CUSTOM_VERSION=y

BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="3.15.5"

BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y

BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/xtensa-lx60/linux-3.15.config"

BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM=y

BR2_LINUX_KERNEL_IMAGE_NAME="Image.elf"

BR2_LINUX_KERNEL_IMAGE_TARGET_NAME="zImage"