board: Add Qemu SH4 r2d configuration

diff --git a/arch/sh/include/asm/syscalls_32.h b/arch/sh/include/asm/syscalls_32.h

index be201fd..454538a 100644

--- a/arch/sh/include/asm/syscalls_32.h

+++ b/arch/sh/include/asm/syscalls_32.h

@@ -19,8 +19,10 @@ asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp,

 asmlinkage int sys_vfork(unsigned long r4, unsigned long r5,

 			 unsigned long r6, unsigned long r7,

 			 struct pt_regs __regs);

-asmlinkage int sys_execve(const char __user *ufilename, char __user * __user *uargv,

-			  char __user * __user *uenvp, unsigned long r7,

+asmlinkage int sys_execve(const char __user *ufilename,

+			  const char __user *const __user *uargv,

+			  const char __user *const __user *uenvp,

+			  unsigned long r7,

 			  struct pt_regs __regs);

 asmlinkage int sys_sigsuspend(old_sigset_t mask, unsigned long r5,

 			      unsigned long r6, unsigned long r7,

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig

index 33990fa..06645b6 100644

--- a/arch/sh/Kconfig

+++ b/arch/sh/Kconfig

@@ -45,7 +45,7 @@ config SUPERH32

 	select HAVE_ARCH_KGDB

 	select HAVE_HW_BREAKPOINT

 	select HAVE_MIXED_BREAKPOINTS_REGS

-	select PERF_EVENTS if HAVE_HW_BREAKPOINT

+	select PERF_EVENTS

 	select ARCH_HIBERNATION_POSSIBLE if MMU

 config SUPERH64

CONFIG_EXPERIMENTAL=y

CONFIG_SYSVIPC=y

CONFIG_IKCONFIG=y

CONFIG_IKCONFIG_PROC=y

CONFIG_LOG_BUF_SHIFT=14

CONFIG_SYSFS_DEPRECATED_V2=y

# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set

# CONFIG_SYSCTL_SYSCALL is not set

CONFIG_SLAB=y

CONFIG_PROFILING=y

CONFIG_OPROFILE=y

CONFIG_MODULES=y

# CONFIG_BLK_DEV_BSG is not set

CONFIG_CPU_SUBTYPE_SH7751R=y

CONFIG_MEMORY_START=0x0c000000

CONFIG_FLATMEM_MANUAL=y

CONFIG_SH_RTS7751R2D=y

CONFIG_RTS7751R2D_PLUS=y

CONFIG_HEARTBEAT=y

CONFIG_PCI=y

CONFIG_HOTPLUG_PCI=y

CONFIG_NET=y

CONFIG_PACKET=y

CONFIG_UNIX=y

CONFIG_INET=y

CONFIG_IP_PNP=y

CONFIG_IP_PNP_DHCP=y

# CONFIG_INET_LRO is not set

# CONFIG_IPV6 is not set

CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"

CONFIG_FW_LOADER=m

CONFIG_BLK_DEV_RAM=y

CONFIG_BLK_DEV_SD=y

CONFIG_ATA=y

CONFIG_PATA_PLATFORM=y

CONFIG_NETDEVICES=y

CONFIG_NET_ETHERNET=y

CONFIG_NET_PCI=y

CONFIG_8139CP=y

CONFIG_8139TOO=y

# CONFIG_8139TOO_PIO is not set

# CONFIG_WLAN is not set

CONFIG_INPUT_FF_MEMLESS=m

# CONFIG_INPUT_MOUSEDEV is not set

# CONFIG_INPUT_KEYBOARD is not set

# CONFIG_INPUT_MOUSE is not set

# CONFIG_SERIO is not set

CONFIG_VT_HW_CONSOLE_BINDING=y

CONFIG_SERIAL_8250=y

CONFIG_SERIAL_SH_SCI=y

CONFIG_SERIAL_SH_SCI_NR_UARTS=1

CONFIG_SERIAL_SH_SCI_CONSOLE=y

CONFIG_HW_RANDOM=y

CONFIG_SPI=y

CONFIG_SPI_SH_SCI=y

CONFIG_MFD_SM501=y

CONFIG_VIDEO_OUTPUT_CONTROL=m

CONFIG_FB=y

CONFIG_FB_SH_MOBILE_LCDC=m

CONFIG_FB_SH_MOBILE_HDMI=m

CONFIG_FB_SM501=y

CONFIG_FRAMEBUFFER_CONSOLE=y

CONFIG_LOGO=y

# CONFIG_LOGO_LINUX_MONO is not set

# CONFIG_LOGO_LINUX_VGA16 is not set

# CONFIG_LOGO_LINUX_CLUT224 is not set

# CONFIG_LOGO_SUPERH_MONO is not set

# CONFIG_LOGO_SUPERH_VGA16 is not set

CONFIG_SOUND=y

CONFIG_SND=m

CONFIG_SND_YMFPCI=m

CONFIG_SOUND_PRIME=m

CONFIG_HID_A4TECH=y

CONFIG_HID_APPLE=y

CONFIG_HID_BELKIN=y

CONFIG_HID_CHERRY=y

CONFIG_HID_CHICONY=y

CONFIG_HID_CYPRESS=y

CONFIG_HID_EZKEY=y

CONFIG_HID_GYRATION=y

CONFIG_HID_LOGITECH=y

CONFIG_HID_MICROSOFT=y

CONFIG_HID_MONTEREY=y

CONFIG_HID_PANTHERLORD=y

CONFIG_HID_PETALYNX=y

CONFIG_HID_SAMSUNG=y

CONFIG_HID_SONY=y

CONFIG_HID_SUNPLUS=y

CONFIG_USB=y

CONFIG_USB_ANNOUNCE_NEW_DEVICES=y

CONFIG_USB_OHCI_HCD=y

CONFIG_USB_STORAGE=y

CONFIG_USB_LIBUSUAL=y

CONFIG_RTC_CLASS=y

CONFIG_RTC_DRV_R9701=y

CONFIG_EXT2_FS=y

CONFIG_MSDOS_FS=y

CONFIG_VFAT_FS=y

CONFIG_PROC_KCORE=y

CONFIG_TMPFS=y

CONFIG_MINIX_FS=y

CONFIG_NLS_CODEPAGE_932=y

CONFIG_DEBUG_FS=y

# CONFIG_RCU_CPU_STALL_DETECTOR is not set

# CONFIG_CRYPTO_ANSI_CPRNG is not set

CONFIG_CRC_T10DIF=y

This little documentation explains how to build a kernel and a rootfs

for qemu with sh4 architecture.

1) Select qemu sh4 configuration and compile it :

make sh4_defconfig

make all

2) Run qemu-system-sh4 with the kernel and rootfs previously generated

It's recommended to use a git release for qemu (the current stable

version has framebuffer display issues). If you want to avoid building

all target, you can use this option on qemu configure :

--target-list=sh4-softmmu

The command is :

qemu-system-sh4 -M r2d -kernel output/images/zImage -drive file=output/images/rootfs.ext2,if=ide,format=raw -append root=/dev/sda console=ttySC1,115200 noiotrap

# Architecture

BR2_sh=y

BR2_sh4=y

# The kernel wants to use the -m4-nofpu option to make sure that it

# doesn't use floating point operations.

BR2_GCC_VERSION_4_5_X=y

BR2_EXTRA_GCC_CONFIG_OPTIONS="--with-multilib-list=m4,m4-nofpu"

# Linux kernel

BR2_LINUX_KERNEL=y

BR2_LINUX_KERNEL_CUSTOM_VERSION=y

BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="2.6.36"

BR2_LINUX_KERNEL_PATCH="board/qemu/sh4-r2d/kernel-patches/"

BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y

BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/sh4-r2d/linux-2.6.36.config"

BR2_LINUX_KERNEL_ZIMAGE=y