├── LICENSE ├── README.md ├── build-kernel-qemu ├── kernel-qemu ├── linux-arm.patch └── snap.png /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc. 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA 6 | 7 | Everyone is permitted to copy and distribute verbatim copies 8 | of this license document, but changing it is not allowed. 9 | 10 | Preamble 11 | 12 | The licenses for most software are designed to take away your 13 | freedom to share and change it. By contrast, the GNU General Public 14 | License is intended to guarantee your freedom to share and change free 15 | software--to make sure the software is free for all its users. This 16 | General Public License applies to most of the Free Software 17 | Foundation's software and to any other program whose authors commit to 18 | using it. 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See the 305 | GNU General Public License for more details. 306 | 307 | You should have received a copy of the GNU General Public License 308 | along with this program; if not, write to the Free Software 309 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 310 | 311 | 312 | Also add information on how to contact you by electronic and paper mail. 313 | 314 | If the program is interactive, make it output a short notice like this 315 | when it starts in an interactive mode: 316 | 317 | Gnomovision version 69, Copyright (C) 19yy name of author 318 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 319 | This is free software, and you are welcome to redistribute it 320 | under certain conditions; type `show c' for details. 321 | 322 | The hypothetical commands `show w' and `show c' should show the appropriate 323 | parts of the General Public License. Of course, the commands you use may 324 | be called something other than `show w' and `show c'; they could even be 325 | mouse-clicks or menu items--whatever suits your program. 326 | 327 | You should also get your employer (if you work as a programmer) or your 328 | school, if any, to sign a "copyright disclaimer" for the program, if 329 | necessary. Here is a sample; alter the names: 330 | 331 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 332 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 333 | 334 | , 1 April 1989 335 | Ty Coon, President of Vice 336 | 337 | This General Public License does not permit incorporating your program into 338 | proprietary programs. If your program is a subroutine library, you may 339 | consider it more useful to permit linking proprietary applications with the 340 | library. If this is what you want to do, use the GNU Library General 341 | Public License instead of this License. 342 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Kernel Build Notes 2 | ================== 3 | 4 | QEMU ARM Emulator 5 | ----------------- 6 | 7 | Use the script 'build-kernel-qemu' to build a kernel image that 8 | can be used to boot QEMU. 9 | 10 | Script will download kernel 4.1.7 sources and toolchain used to compile it. 11 | A precompiled kernel version is available with the script 12 | 13 | Assumptions 14 | ----------- 15 | 16 | Your system is able to execute 32 bit binaries, and you have git tool 17 | 18 | Tests 19 | ----- 20 | 21 | Tested by booting Raspbian 8 (Jessie) kernel 4.1.7 system in QEMU 22 | 23 | ![alt tag](snap.png) 24 | 25 | You also need to mount raspbian image file and edit /etc/fstab by commenting 26 | out mmcblk entries. also on /etc/ld.so.preload you need to comment out all entries 27 | 28 | after that, you can boot iamge using qemu: 29 | 30 | qemu-system-arm -kernel kernel-qemu -cpu arm1176 -m 256 -M versatilepb -hda 2015-09-24-raspbian-jessie.img -append "root=/dev/sda2 rootfstype=ext4" 31 | 32 | 33 | Script and sources modified by Cassiano Martin 34 | -------------------------------------------------------------------------------- /build-kernel-qemu: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | # 3 | # Build ARM kernel 4.1.7 for QEMU Raspberry Pi Emulation 4 | # 5 | ####################################################### 6 | 7 | TOOLCHAIN=$(pwd)/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf 8 | 9 | git clone https://github.com/raspberrypi/linux.git 10 | git clone https://github.com/raspberrypi/tools.git 11 | cd linux 12 | git checkout 77798915750db46f10bb449e1625d6368ea42e25 13 | patch -p1 < ../linux-arm.patch 14 | 15 | make ARCH=arm versatile_defconfig 16 | cat >> .config << EOF 17 | CONFIG_CROSS_COMPILE="$TOOLCHAIN" 18 | CONFIG_CPU_V6=y 19 | CONFIG_ARM_ERRATA_411920=y 20 | CONFIG_ARM_ERRATA_364296=y 21 | CONFIG_AEABI=y 22 | CONFIG_OABI_COMPAT=y 23 | CONFIG_PCI=y 24 | CONFIG_SCSI=y 25 | CONFIG_SCSI_SYM53C8XX_2=y 26 | CONFIG_BLK_DEV_SD=y 27 | CONFIG_BLK_DEV_SR=y 28 | CONFIG_DEVTMPFS=y 29 | CONFIG_DEVTMPFS_MOUNT=y 30 | CONFIG_TMPFS=y 31 | CONFIG_INPUT_EVDEV=y 32 | CONFIG_EXT3_FS=y 33 | CONFIG_EXT4_FS=y 34 | CONFIG_VFAT_FS=y 35 | CONFIG_NLS_CODEPAGE_437=y 36 | CONFIG_NLS_ISO8859_1=y 37 | CONFIG_FONT_8x16=y 38 | CONFIG_LOGO=y 39 | CONFIG_VFP=y 40 | CONFIG_CGROUPS=y 41 | EOF 42 | 43 | make -j 8 -k ARCH=arm CROSS_COMPILE=${TOOLCHAIN}- menuconfig 44 | make -j 8 -k ARCH=arm CROSS_COMPILE=${TOOLCHAIN}- 45 | cd .. 46 | cp linux/arch/arm/boot/zImage kernel-qemu 47 | -------------------------------------------------------------------------------- /kernel-qemu: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/polaco1782/raspberry-qemu/cc12e97907bebf388a81d7bcd2966f1efbf7e138/kernel-qemu -------------------------------------------------------------------------------- /linux-arm.patch: -------------------------------------------------------------------------------- 1 | diff -rupN linux/arch/arm/mach-versatile/Kconfig linux.b/arch/arm/mach-versatile/Kconfig 2 | --- linux/arch/arm/mach-versatile/Kconfig 2015-10-12 20:42:55.161811668 -0300 3 | +++ linux.b/arch/arm/mach-versatile/Kconfig 2015-10-12 16:12:43.125862874 -0300 4 | @@ -4,7 +4,6 @@ menu "Versatile platform type" 5 | config ARCH_VERSATILE_PB 6 | bool "Support Versatile Platform Baseboard for ARM926EJ-S" 7 | default y 8 | - select CPU_ARM926T 9 | select MIGHT_HAVE_PCI 10 | help 11 | Include support for the ARM(R) Versatile Platform Baseboard 12 | @@ -12,7 +11,6 @@ config ARCH_VERSATILE_PB 13 | 14 | config MACH_VERSATILE_AB 15 | bool "Support Versatile Application Baseboard for ARM926EJ-S" 16 | - select CPU_ARM926T 17 | help 18 | Include support for the ARM(R) Versatile Application Baseboard 19 | for the ARM926EJ-S. 20 | diff -rupN linux/arch/arm/mm/Kconfig linux.b/arch/arm/mm/Kconfig 21 | --- linux/arch/arm/mm/Kconfig 2015-10-12 20:42:55.165811668 -0300 22 | +++ linux.b/arch/arm/mm/Kconfig 2015-10-12 16:14:36.525859523 -0300 23 | @@ -71,7 +71,7 @@ config CPU_ARM9TDMI 24 | 25 | # ARM920T 26 | config CPU_ARM920T 27 | - bool "Support ARM920T processor" if (ARCH_MULTI_V4T && ARCH_INTEGRATOR) 28 | + bool "Support ARM920T processor" if ARCH_INTEGRATOR || ARCH_VERSATILE_PB || ARCH_VERSATILE_AB 29 | select CPU_32v4T 30 | select CPU_ABRT_EV4T 31 | select CPU_CACHE_V4WT 32 | @@ -89,7 +89,7 @@ config CPU_ARM920T 33 | 34 | # ARM922T 35 | config CPU_ARM922T 36 | - bool "Support ARM922T processor" if (ARCH_MULTI_V4T && ARCH_INTEGRATOR) 37 | + bool "Support ARM922T processor" if ARCH_INTEGRATOR || ARCH_VERSATILE_PB || ARCH_VERSATILE_AB 38 | select CPU_32v4T 39 | select CPU_ABRT_EV4T 40 | select CPU_CACHE_V4WT 41 | @@ -127,7 +127,7 @@ config CPU_ARM925T 42 | 43 | # ARM926T 44 | config CPU_ARM926T 45 | - bool "Support ARM926T processor" if (!ARCH_MULTIPLATFORM || ARCH_MULTI_V5) && (ARCH_INTEGRATOR || MACH_REALVIEW_EB) 46 | + bool "Support ARM926T processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || ARCH_VERSATILE_PB || ARCH_VERSATILE_AB 47 | select CPU_32v5 48 | select CPU_ABRT_EV5TJ 49 | select CPU_CACHE_VIVT 50 | @@ -135,6 +135,7 @@ config CPU_ARM926T 51 | select CPU_CP15_MMU 52 | select CPU_PABRT_LEGACY 53 | select CPU_TLB_V4WBI if MMU 54 | + depends on !CPU_V6 && !CPU_V7 55 | help 56 | This is a variant of the ARM920. It has slightly different 57 | instruction sequences for cache and TLB operations. Curiously, 58 | @@ -358,7 +359,7 @@ config CPU_PJ4B 59 | 60 | # ARMv6 61 | config CPU_V6 62 | - bool "Support ARM V6 processor" if (!ARCH_MULTIPLATFORM || ARCH_MULTI_V6) && (ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX) 63 | + bool "Support ARM V6 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX || MACH_BCM2708 || ARCH_VERSATILE_PB || ARCH_VERSATILE_AB 64 | select CPU_32v6 65 | select CPU_ABRT_EV6 66 | select CPU_CACHE_V6 67 | -------------------------------------------------------------------------------- /snap.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/polaco1782/raspberry-qemu/cc12e97907bebf388a81d7bcd2966f1efbf7e138/snap.png --------------------------------------------------------------------------------