add support for Qemu ARM noMMU

Greg Ungerer made me aware of this possibility.
Rather hackish implementation, we need to deduplicate later.
Update Linux Kernel to 4.4.19 while there.
Only non-Devicetree system supported right now.

22 files changed, 60 insertions, 7 deletions

diff --git a/target/arm/Makefile b/target/arm/Makefile
index 5095d5fae..b7e5e9f98 100644
--- a/target/arm/Makefile
+++ b/target/arm/Makefile
@@ -32,7 +32,7 @@ endif
 ifeq ($(ADK_TARGET_SYSTEM_QEMU_ARM_REALVIEW_EB_MPCORE),y)
 QEMU_ARGS+=-M realview-eb-mpcore -net user -net nic
 endif
-ifeq ($(ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB),y)
+ifeq ($(ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB)$(ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB_NOMMU),y)
 ifeq ($(ADK_TARGET_WITH_DEVICETREE),y)
 QEMU_ARGS+=-M versatilepb -net user -net nic,model=smc91c111 -dtb $(FW_DIR)/versatile-pb.dtb
 else
@@ -153,7 +153,7 @@ ifeq ($(ADK_TARGET_SYSTEM_QEMU_ARM_VEXPRESS_A9),y)
 	env $(KERNEL_MAKE_ENV) $(MAKE) -C "${LINUX_DIR}" $(KERNEL_MAKE_OPTS) \
 		dtbs $(MAKE_TRACE)
 endif
-ifeq ($(ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB),y)
+ifeq ($(ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB)$(ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB_NOMMU),y)
 	env $(KERNEL_MAKE_ENV) $(MAKE) -C "${LINUX_DIR}" $(KERNEL_MAKE_OPTS) \
 		dtbs $(MAKE_TRACE)
 endif
diff --git a/target/arm/kernel/qemu-arm-versatilepb-nommu b/target/arm/kernel/qemu-arm-versatilepb-nommu
new file mode 100644
index 000000000..3d7b851e4
--- /dev/null
+++ b/target/arm/kernel/qemu-arm-versatilepb-nommu
@@ -0,0 +1,16 @@
+CONFIG_ARM=y
+CONFIG_ARCH_VERSATILE=y
+CONFIG_KUSER_HELPERS=y
+CONFIG_ATAGS=y
+CONFIG_USE_OF=y
+CONFIG_SET_MEM_PARAM=y
+CONFIG_DRAM_BASE=0x00000000
+CONFIG_DRAM_SIZE=0x08000000
+CONFIG_ARCH_VERSATILE_PB=y
+CONFIG_MACH_VERSATILE_AB=y
+# CONFIG_MACH_VERSATILE_DT is not set
+CONFIG_PLAT_VERSATILE_CLOCK=y
+CONFIG_PLAT_VERSATILE_SCHED_CLOCK=y
+CONFIG_PLAT_VERSATILE=y
+CONFIG_VECTORS_BASE=0x00000000
+CONFIG_PHYS_OFFSET=0x00000000
diff --git a/target/arm/systems/qemu-arm-versatilepb-nommu b/target/arm/systems/qemu-arm-versatilepb-nommu
new file mode 100644
index 000000000..a1aef83db
--- /dev/null
+++ b/target/arm/systems/qemu-arm-versatilepb-nommu
@@ -0,0 +1,10 @@
+config ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB_NOMMU
+	bool "Qemu Emulator (Versatile/PB) no MMU"
+	depends on ADK_TARGET_LITTLE_ENDIAN
+	select ADK_TARGET_CPU_ARM_ARM926EJ_S_NOMMU
+	select ADK_TARGET_QEMU
+	select ADK_TARGET_KERNEL_ZIMAGE
+	select ADK_TARGET_KERNEL_WITH_COMPRESSION
+	help
+	  Qemu Emulator for ARM architecture (Versatile/PB) without MMU.
+
diff --git a/target/config/Config.in.archopts b/target/config/Config.in.archopts
index e205a7909..a5f2bc08d 100644
--- a/target/config/Config.in.archopts
+++ b/target/config/Config.in.archopts
@@ -7,7 +7,6 @@ depends on ADK_TARGET_ARCH_ARM
 
 config ADK_TARGET_ARCH_ARM_WITH_ARM
 	bool "arm"
-	depends on ADK_TARGET_WITH_MMU
 
 config ADK_TARGET_ARCH_ARM_WITH_THUMB
 	bool "thumb"
diff --git a/target/config/Config.in.cpu b/target/config/Config.in.cpu
index db1bee0c2..8375c7ee3 100644
--- a/target/config/Config.in.cpu
+++ b/target/config/Config.in.cpu
@@ -56,6 +56,13 @@ config ADK_TARGET_CPU_ARM_ARM926EJ_S
 	select ADK_TARGET_WITH_MMU
 	depends on ADK_TARGET_ARCH_ARM
 
+config ADK_TARGET_CPU_ARM_ARM926EJ_S_NOMMU
+	bool "arm926ej-s"
+	select ADK_TARGET_WITH_LT
+	select ADK_TARGET_WITHOUT_MMU
+	select ADK_TARGET_UCLINUX
+	depends on ADK_TARGET_ARCH_ARM
+
 config ADK_TARGET_CPU_ARM_ARM11MPCORE
 	bool "arm11mpcore"
 	select ADK_TARGET_WITH_NPTL
diff --git a/target/config/Config.in.kernelversion b/target/config/Config.in.kernelversion
index bfb191f3e..3ac3e055b 100644
--- a/target/config/Config.in.kernelversion
+++ b/target/config/Config.in.kernelversion
@@ -31,7 +31,7 @@ config ADK_TARGET_KERNEL_VERSION_4_6
 	depends on !ADK_TARGET_ARCH_NDS32
 
 config ADK_TARGET_KERNEL_VERSION_4_4
-	bool "4.4.17"
+	bool "4.4.19"
 	depends on !ADK_TARGET_ARCH_NDS32
 	depends on !ADK_TARGET_ARCH_NIOS2
 	depends on !ADK_TARGET_CPU_MIPS_MIPS32R6
diff --git a/target/config/Config.in.runtime b/target/config/Config.in.runtime
index 6657e044c..607c62d68 100644
--- a/target/config/Config.in.runtime
+++ b/target/config/Config.in.runtime
@@ -260,6 +260,7 @@ config ADK_RUNTIME_CONSOLE_SERIAL_DEVICE
 	default "ttyARC0" if ADK_TARGET_SYSTEM_NSIM_ARCV1 \
 				|| ADK_TARGET_SYSTEM_NSIM_ARCV2
 	default "ttyAMA0" if ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB \
+				|| ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB_NOMMU \
 				|| ADK_TARGET_SYSTEM_QEMU_ARM_REALVIEW_EB_MPCORE \
 				|| ADK_TARGET_SYSTEM_QEMU_ARM_VEXPRESS_A9 \
 				|| ADK_TARGET_SYSTEM_ARM_FM \
@@ -284,7 +285,7 @@ config ADK_RUNTIME_CONSOLE_SERIAL_SPEED
 		|| ADK_TARGET_SIM
 	default "9600" if ADK_TARGET_SYSTEM_FON_FON2100
 	default "9600" if ADK_TARGET_SYSTEM_NUMATO_MIMASV2
-	default "38400" if ADK_TARGET_SYSTEM_PCENGINES_WRAP	
+	default "38400" if ADK_TARGET_SYSTEM_PCENGINES_WRAP
 	default "38400" if ADK_TARGET_SYSTEM_ANDES_AG101P
 	default "115200"
 
diff --git a/target/linux/config/Config.in.bus b/target/linux/config/Config.in.bus
index 9921f5795..351b09f41 100644
--- a/target/linux/config/Config.in.bus
+++ b/target/linux/config/Config.in.bus
@@ -7,6 +7,7 @@ config ADK_KERNEL_PCI
 	depends on ADK_TARGET_WITH_PCI \
 		|| ADK_TARGET_QEMU \
 		|| ADK_TARGET_VBOX
+	default n if ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB_NOMMU
 	default y
 
 config ADK_KERNEL_PCI_QUIRKS
diff --git a/target/linux/config/Config.in.ethernet b/target/linux/config/Config.in.ethernet
index 8742b40c6..8f7bbc4b2 100644
--- a/target/linux/config/Config.in.ethernet
+++ b/target/linux/config/Config.in.ethernet
@@ -192,8 +192,10 @@ config ADK_KERNEL_SMC91X
 	select ADK_KERNEL_GPIOLIB
 	depends on ADK_TARGET_SYSTEM_ARM_FM || \
 		   ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB || \
+		   ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB_NOMMU || \
 		   ADK_TARGET_SYSTEM_QEMU_ARM_REALVIEW_EB_MPCORE
 	default y if ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB
+	default y if ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB_NOMMU
 	default y if ADK_TARGET_SYSTEM_QEMU_ARM_REALVIEW_EB_MPCORE
 	default y if ADK_TARGET_SYSTEM_ARM_FM
 	default n
diff --git a/target/linux/config/Config.in.kernel b/target/linux/config/Config.in.kernel
index 7761ced3c..843929376 100644
--- a/target/linux/config/Config.in.kernel
+++ b/target/linux/config/Config.in.kernel
@@ -88,8 +88,7 @@ config ADK_KERNEL_BINFMT_ELF_FDPIC
 
 config ADK_KERNEL_BINFMT_FLAT
 	bool
-	default y if ADK_TARGET_BINFMT_FLAT_ONE
-	default y if ADK_TARGET_BINFMT_FLAT_SEP_DATA
+	default y if ADK_TARGET_BINFMT_FLAT
 
 config ADK_KERNEL_BINFMT_SHARED_FLAT
 	bool
diff --git a/target/linux/config/Config.in.serial b/target/linux/config/Config.in.serial
index 82d745271..af8fed395 100644
--- a/target/linux/config/Config.in.serial
+++ b/target/linux/config/Config.in.serial
@@ -199,10 +199,12 @@ config ADK_KERNEL_SERIAL_AMBA_PL011
 	depends on ADK_TARGET_BOARD_BCM28XX \
 		|| ADK_TARGET_SYSTEM_QEMU_ARM_REALVIEW_EB_MPCORE \
 		|| ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB \
+		|| ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB_NOMMU \
 		|| ADK_TARGET_SYSTEM_QEMU_ARM_VEXPRESS_A9
 	default y if ADK_TARGET_BOARD_BCM28XX
 	default y if ADK_TARGET_SYSTEM_QEMU_ARM_REALVIEW_EB_MPCORE
 	default y if ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB
+	default y if ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB_NOMMU
 	default y if ADK_TARGET_SYSTEM_QEMU_ARM_VEXPRESS_A9
 	default n
 	help
diff --git a/target/linux/patches/4.4.17/coldfire-sighandler.patch b/target/linux/patches/4.4.19/coldfire-sighandler.patch
index c52a4e228..c52a4e228 100644
--- a/target/linux/patches/4.4.17/coldfire-sighandler.patch
+++ b/target/linux/patches/4.4.19/coldfire-sighandler.patch
diff --git a/target/linux/patches/4.4.17/crisv32.patch b/target/linux/patches/4.4.19/crisv32.patch
index cb9b0d028..cb9b0d028 100644
--- a/target/linux/patches/4.4.17/crisv32.patch
+++ b/target/linux/patches/4.4.19/crisv32.patch
diff --git a/target/linux/patches/4.4.17/initramfs-nosizelimit.patch b/target/linux/patches/4.4.19/initramfs-nosizelimit.patch
index 40d2f6bd8..40d2f6bd8 100644
--- a/target/linux/patches/4.4.17/initramfs-nosizelimit.patch
+++ b/target/linux/patches/4.4.19/initramfs-nosizelimit.patch
diff --git a/target/linux/patches/4.4.17/ld-or1k.patch b/target/linux/patches/4.4.19/ld-or1k.patch
index 264f9166f..264f9166f 100644
--- a/target/linux/patches/4.4.17/ld-or1k.patch
+++ b/target/linux/patches/4.4.19/ld-or1k.patch
diff --git a/target/linux/patches/4.4.17/macsonic.patch b/target/linux/patches/4.4.19/macsonic.patch
index 75a6fcad2..75a6fcad2 100644
--- a/target/linux/patches/4.4.17/macsonic.patch
+++ b/target/linux/patches/4.4.19/macsonic.patch
diff --git a/target/linux/patches/4.4.17/mips-xz.patch b/target/linux/patches/4.4.19/mips-xz.patch
index 5cfac6254..5cfac6254 100644
--- a/target/linux/patches/4.4.17/mips-xz.patch
+++ b/target/linux/patches/4.4.19/mips-xz.patch
diff --git a/target/linux/patches/4.4.17/patch-realtime b/target/linux/patches/4.4.19/patch-realtime
index c677e4098..c677e4098 100644
--- a/target/linux/patches/4.4.17/patch-realtime
+++ b/target/linux/patches/4.4.19/patch-realtime
diff --git a/target/linux/patches/4.4.17/revert-sparc.patch b/target/linux/patches/4.4.19/revert-sparc.patch
index 296be0e4a..296be0e4a 100644
--- a/target/linux/patches/4.4.17/revert-sparc.patch
+++ b/target/linux/patches/4.4.19/revert-sparc.patch
diff --git a/target/linux/patches/4.4.17/startup.patch b/target/linux/patches/4.4.19/startup.patch
index e54ac19a6..e54ac19a6 100644
--- a/target/linux/patches/4.4.17/startup.patch
+++ b/target/linux/patches/4.4.19/startup.patch
diff --git a/target/linux/patches/4.4.17/use-libgcc-for-sh.patch b/target/linux/patches/4.4.19/use-libgcc-for-sh.patch
index 6420219b0..6420219b0 100644
--- a/target/linux/patches/4.4.17/use-libgcc-for-sh.patch
+++ b/target/linux/patches/4.4.19/use-libgcc-for-sh.patch
diff --git a/target/linux/patches/4.4.19/versatile-nommu.patch b/target/linux/patches/4.4.19/versatile-nommu.patch
new file mode 100644
index 000000000..96140b30c
--- /dev/null
+++ b/target/linux/patches/4.4.19/versatile-nommu.patch
@@ -0,0 +1,16 @@
+diff -Nur linux-4.4.17.orig/arch/arm/mach-versatile/include/mach/hardware.h linux-4.4.17/arch/arm/mach-versatile/include/mach/hardware.h
+--- linux-4.4.17.orig/arch/arm/mach-versatile/include/mach/hardware.h	2016-08-10 11:49:43.000000000 +0200
++++ linux-4.4.17/arch/arm/mach-versatile/include/mach/hardware.h	2016-08-25 23:19:03.691716292 +0200
+@@ -30,8 +30,12 @@
+ #define VERSATILE_PCI_VIRT_BASE		(void __iomem *)0xe8000000ul
+ #define VERSATILE_PCI_CFG_VIRT_BASE	(void __iomem *)0xe9000000ul
+ 
++#ifdef CONFIG_MMU
+ /* macro to get at MMIO space when running virtually */
+ #define IO_ADDRESS(x)		(((x) & 0x0fffffff) + (((x) >> 4) & 0x0f000000) + 0xf0000000)
++#else
++#define IO_ADDRESS(x)		(x)
++#endif
+ 
+ #define __io_address(n)		((void __iomem __force *)IO_ADDRESS(n))
+