genode/ports-foc/patches/l4android_genode.patch

diff --git a/arch/l4/Kconfig b/arch/l4/Kconfig
index 995122e..ed181ff 100644
--- a/arch/l4/Kconfig
+++ b/arch/l4/Kconfig
@@ -394,6 +394,18 @@ endmenu # l4linux options
 config L4_USE_L4SHMC
 	bool
 
+config SCREEN_GENODE
+	bool
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	default y
+
+config SERIAL_GENODE
+	bool
+	default y
+	select SERIAL_CORE
+	select SERIAL_CORE_CONSOLE
 
 # some delimiter (for .config)
 comment ""
diff --git a/arch/l4/Makefile b/arch/l4/Makefile
index 806ef23..e577a7e 100644
--- a/arch/l4/Makefile
+++ b/arch/l4/Makefile
@@ -170,6 +170,12 @@ KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
 # prevent gcc from generating any FP code by mistake
 KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
 
+#
+# Prevent the gcc from linking Linux memmove into compiler-generated
+# Genode stuff.
+#
+KBUILD_CFLAGS += -Dmemmove=lx_memmove
+
 endif
 
 ifeq ($(BASEARCH),arm)
@@ -252,6 +258,8 @@ endif
 
 endif
 
+# Genode compiler is build without Linux defines.
+KBUILD_CFLAGS  +=-D__linux__ -Dlinux
 
 # -----------------------------------------------
 
@@ -274,14 +282,15 @@ L4LX_E_L-$(CONFIG_L4_PDSPBLK_DRV)  += pers_dsp
 L4LX_E_L-$(CONFIG_L4_TCG_STPM)     += stpm-client
 L4LX_E_L-$(CONFIG_L4_FERRET)       += ferret
 
-L4INC		= -I$(L4OBJ)/include/$(L4_MK_ARCH)/$(L4_MK_API) \
-		  -I$(L4OBJ)/include/$(L4_MK_ARCH) \
-		  -I$(L4OBJ)/include/$(L4_MK_API) \
-		  -I$(L4OBJ)/include
+#L4INC		= -I$(L4OBJ)/include/$(L4_MK_ARCH)/$(L4_MK_API) \
+#		  -I$(L4OBJ)/include/$(L4_MK_ARCH) \
+#		  -I$(L4OBJ)/include/$(L4_MK_API) \
+#		  -I$(L4OBJ)/include
 
 head-y := arch/l4/kernel/head.o arch/l4/kernel/init_task.o
 
-libs-y				+= arch/l4/lib/arch-$(BASEARCH)/	\
+libs-y				+= arch/l4/lib/arch-$(BASEARCH)/
+#	\
 				   arch/l4/l4lxlib/generic/		\
 				   arch/l4/l4lxlib/$(BASEENV)/
 
@@ -299,7 +308,7 @@ endif
 
 core-y += arch/l4/
 
--include $(L4OBJ)/l4defs.mk.inc
+#-include $(L4OBJ)/l4defs.mk.inc
 
 L4_REQUIRED_MODS		:= libc_be_minimal_log_io \
                                    libc_minimal libc_minimal_l4re \
@@ -315,15 +324,16 @@ $(info  L4_REQUIRED_MODS: $(L4_REQUIRED_MODS))
 $(error Aborting.)
 endif
 
-libs-y				+= -Bstatic $(L4_LIBDIRS) -ll4sys -ll4sys-direct
+libs-y				+= $(GENODE_LIBS)
 export L4INC L4_REQUIRED_MODS
 
-LDFLAGS_vmlinux  =  \
-  --defsym __L4_KIP_ADDR__=$(L4_BID_KIP_ADDR) \
-  --defsym __l4sys_invoke_direct=$(L4_BID_KIP_ADDR)+$(L4_BID_KIP_OFFS_SYS_INVOKE) \
-  --defsym __l4sys_debugger_direct=$(L4_BID_KIP_ADDR)+$(L4_BID_KIP_OFFS_SYS_DEBUGGER)
+LDFLAGS_vmlinux  =  -nostdlib
+#  --defsym __L4_KIP_ADDR__=$(L4_BID_KIP_ADDR) \
+  -nostdlib
+#--defsym __l4sys_invoke_direct=$(L4_BID_KIP_ADDR)+$(L4_BID_KIP_OFFS_SYS_INVOKE) \
+  --defsym __l4sys_debugger_direct=$(L4_BID_KIP_ADDR)+$(L4_BID_KIP_OFFS_SYS_DEBUGGER) \
 
-KBUILD_CPPFLAGS	+= -Iarch/l4/include/asm/l4-arch \
+KBUILD_CPPFLAGS	+= $(GENODE_INCLUDES) -Iarch/l4/include/asm/l4-arch \
 		   -I$(src)/arch/$(LINSRCARCH)/include \
 		   -Iarch/l4/include/asm/$(LINSRCARCH)-arch \
 		   -Iarch/l4/include/asm/orig-arch \
@@ -342,6 +352,8 @@ ifneq ($(CONFIG_L4_ARCH_ARM),)
 KBUILD_CPPFLAGS += -DTEXT_OFFSET=0x0100000
 endif
 
+drivers-y += arch/l4/drivers/
+
 all: lImage
 
 boot := arch/l4/boot
@@ -350,11 +362,11 @@ lImage: check_for_l4defs $(if $(CONFIG_L4_SERVER),server) vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $@
 
 check_for_l4defs:
-	$(Q)if [ ! -e $(L4OBJ)/l4defs.mk.inc ]; then \
-	  echo "No $(L4OBJ)/l4defs.mk.inc available."; \
-	  echo "Did you run 'make' in $(L4OBJ) to a successful end?"; \
-	  exit 1; \
-	fi
+#	$(Q)if [ ! -e $(L4OBJ)/l4defs.mk.inc ]; then \
+#	  echo "No $(L4OBJ)/l4defs.mk.inc available."; \
+#	  echo "Did you run 'make' in $(L4OBJ) to a successful end?"; \
+#	  exit 1; \
+#	fi
 
 server:
 	$(Q)$(MAKE) $(build)=arch/l4/server
diff --git a/arch/l4/boot/Makefile b/arch/l4/boot/Makefile
index 391b037..afd4c2a 100644
--- a/arch/l4/boot/Makefile
+++ b/arch/l4/boot/Makefile
@@ -10,7 +10,7 @@ $(obj)/Image: vmlinux FORCE
 	$(call if_changed,objcopy)
 	@echo '  Kernel: $@ is ready'
 
-lImage: $(obj)/Image vmlinuz$(VMLINUZ_SUFFIX) l4linux$(VMLINUZ_SUFFIX)
+lImage: $(obj)/Image
 
 vmlinuz$(VMLINUZ_SUFFIX): ldrImage FORCE
 	$(call if_changed,gzip)
@@ -21,8 +21,8 @@ l4linux$(VMLINUZ_SUFFIX): ldrImage FORCE
 
 objects-y := ldr.o res.o image.o
 
-include $(L4OBJ)/l4defs.mk.inc
-
+#include $(L4OBJ)/l4defs.mk.inc
+KBUILD_CFLAGS_i386 = -m32
 KBUILD_CFLAGS	:= $(filter-out -mregparm=3,$(KBUILD_CFLAGS)) \
                    $(L4INC) -I$(L4OBJ)/include/uclibc \
 		   -Wall -fno-strict-aliasing -O2 -pipe \
diff --git a/arch/l4/include/asm/generic/l4lib.h b/arch/l4/include/asm/generic/l4lib.h
index a5711ea..db5d812 100644
--- a/arch/l4/include/asm/generic/l4lib.h
+++ b/arch/l4/include/asm/generic/l4lib.h
@@ -3,6 +3,7 @@
 
 #include <linux/stringify.h>
 
+#if 0
 #ifdef ARCH_arm
 #define L4_EXTERNAL_FUNC(func) \
 	asm(".section \".data.l4externals.str\"                         \n" \
@@ -58,5 +59,8 @@
 	    ".previous                                                  \n" \
 	   )
 #endif
+#endif
+
+#define L4_EXTERNAL_FUNC(func) ;
 
 #endif /* __INCLUDE__ASM_L4__GENERIC__L4LIB_H__ */
diff --git a/arch/l4/kernel/arch-arm/traps.c b/arch/l4/kernel/arch-arm/traps.c
index d6a3b4f..a44f5eb 100644
--- a/arch/l4/kernel/arch-arm/traps.c
+++ b/arch/l4/kernel/arch-arm/traps.c
@@ -66,6 +66,7 @@ void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long
 		dump_mem("", "Exception stack", frame + 4, frame + 4 + sizeof(struct pt_regs));
 }
 
+#if 0
 #ifndef CONFIG_ARM_UNWIND
 /*
  * Stack pointers should always be within the kernels view of
@@ -81,6 +82,7 @@ static int verify_stack(unsigned long sp)
 	return 0;
 }
 #endif
+#endif
 
 /*
  * Dump out the contents of some memory nicely...
@@ -170,6 +172,7 @@ static inline void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
 #else
 static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
 {
+#if 0
 	unsigned int fp, mode;
 	int ok = 1;
 
@@ -201,6 +204,7 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
 
 	if (ok)
 		c_backtrace(fp, mode);
+#endif
 }
 #endif
 
diff --git a/arch/l4/kernel/arch-arm/vmlinux.lds.S b/arch/l4/kernel/arch-arm/vmlinux.lds.S
index 169f257..4e25408 100644
--- a/arch/l4/kernel/arch-arm/vmlinux.lds.S
+++ b/arch/l4/kernel/arch-arm/vmlinux.lds.S
@@ -36,6 +36,12 @@ jiffies = jiffies_64;
 jiffies = jiffies_64 + 4;
 #endif
 
+PHDRS
+{
+	ro   PT_LOAD;
+	rw   PT_LOAD;
+}
+
 SECTIONS
 {
 #ifdef CONFIG_XIP_KERNEL
@@ -46,6 +52,19 @@ SECTIONS
 
 	.init : {			/* Init code and data		*/
 		_stext = .;
+		_prog_img_beg = .;
+
+		/*
+		 * Leave space for parent capability parameters at start of data
+		 * section. The protection domain creator is reponsible for storing
+		 * sane values here.
+		 */
+		_parent_cap = .;
+		_parent_cap_thread_id = .;
+		LONG(0xffffffff);
+		_parent_cap_local_name = .;
+		LONG(0xffffffff);
+
 		_sinittext = .;
 			HEAD_TEXT
 			INIT_TEXT
@@ -80,7 +99,7 @@ SECTIONS
 		INIT_DATA
 		ARM_EXIT_KEEP(EXIT_DATA)
 #endif
-	}
+	} : rw
 
 	PERCPU_SECTION(32)
 
@@ -126,6 +145,7 @@ SECTIONS
 #ifdef CONFIG_MMU
 			*(.fixup)
 #endif
+			*(.text.*) /* put all Genode .text entries in here */
 			*(.gnu.warning)
 			*(.rodata)
 			*(.rodata.*)
@@ -134,7 +154,8 @@ SECTIONS
 		. = ALIGN(4);
 		*(.got)			/* Global offset table		*/
 			ARM_CPU_KEEP(PROC_INFO)
-	}
+
+	} : rw
 
 	RO_DATA(PAGE_SIZE)
 
@@ -155,6 +176,42 @@ SECTIONS
 	}
 #endif
 
+	/*
+	 * When building L4Linux for Genode, the 'CONFIG_ARM_UNWIND' option is
+	 * disabled to avoid conflicts between unwinding-related symbols provided
+	 * by the Linux kernel and the C++ compiler's libsupc++. Hence, the linker
+	 * script section above is not used. Instead, the '.ARM.exidx' entries are
+	 * handled as follows (taken from the Genode linker script.
+	 */
+	/* .ARM.exidx is sorted, so has to go in its own output section */
+	__exidx_start = .;
+	.ARM.exidx : {
+		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
+	}
+	__exidx_end = .;
+
+	.ARM.extab : {
+		*(.ARM.extab*)
+	} : rw
+
+	/* exception frames for C++ */
+	.eh_frame : {
+		__eh_frame_start__ = .;
+		KEEP (*(.eh_frame))
+		LONG(0)
+	} : rw
+
+	.init_array : {
+		__init_array_start = .;
+		_ctors_start = .;
+		KEEP (*(SORT(.init_array.*)))
+		KEEP (*(.init_array))
+		__init_array_end = .;
+		_ctors_end = .;
+		_dtors_start = .;
+		_dtors_end = .;
+	}
+
 	_etext = .;			/* End of text and rodata section */
 
 #ifdef CONFIG_XIP_KERNEL
@@ -204,8 +261,10 @@ SECTIONS
 		DATA_DATA
 		CONSTRUCTORS
 
+		*(.data.*) /* put all Genode .data entries in here */
+
 		_edata = .;
-	}
+	} : rw
 	_edata_loc = __data_loc + SIZEOF(.data);
 
 #ifdef CONFIG_HAVE_TCM
@@ -267,10 +326,20 @@ SECTIONS
 
 	NOTES
 
-	BSS_SECTION(0, 0, 0)
+	/* BSS */
+	. = ALIGN(PAGE_SIZE);
+	.bss : AT(ADDR(.bss) - LOAD_OFFSET) {
+		__bss_start = .;
+		*(.bss..page_aligned)
+		*(.bss)
+		*(.bss.*) /* put all Genode .bss entries in here */
+		. = ALIGN(4);
+		__bss_stop = .;
+	}
 
 	/* L4: Align to full superpage */
 	. = ALIGN(1048576);
+	_prog_img_end = .;
 	_end = .;
 
 	/* L4: Add NOTES so that .note.gnu.build-id is caught, because we do
diff --git a/arch/l4/kernel/arch-x86/vmlinux.lds.S b/arch/l4/kernel/arch-x86/vmlinux.lds.S
index 42ee2bc..1bbf018 100644
--- a/arch/l4/kernel/arch-x86/vmlinux.lds.S
+++ b/arch/l4/kernel/arch-x86/vmlinux.lds.S
@@ -33,7 +33,7 @@ OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT)
 
 #ifdef CONFIG_X86_32
 OUTPUT_ARCH(i386)
-ENTRY(phys_startup_32)
+ENTRY(_start)
 jiffies = jiffies_64;
 #else
 OUTPUT_ARCH(i386:x86-64)
@@ -67,17 +67,10 @@ jiffies_64 = jiffies;
 
 #endif
 
-PHDRS {
-	text PT_LOAD FLAGS(5);          /* R_E */
-	data PT_LOAD FLAGS(6);          /* RW_ */
-#ifdef CONFIG_X86_64
-	user PT_LOAD FLAGS(5);          /* R_E */
-#ifdef CONFIG_SMP
-	percpu PT_LOAD FLAGS(6);        /* RW_ */
-#endif
-	init PT_LOAD FLAGS(7);          /* RWE */
-#endif
-	note PT_NOTE FLAGS(0);          /* ___ */
+PHDRS
+{
+	ro   PT_LOAD;
+	rw   PT_LOAD;
 }
 
 SECTIONS
@@ -97,6 +90,29 @@ SECTIONS
 	/*_stext = .;*/
 	.text :  AT(ADDR(.text) - LOAD_OFFSET) {
 		_text = .;
+		_prog_img_beg = .;
+
+		/*
+		 * Leave space for parent capability parameters at start of data
+		 * section. The protection domain creator is reponsible for storing
+		 * sane values here.
+		 */
+		_parent_cap = .;
+		_parent_cap_thread_id = .;
+		LONG(0xffffffff);
+		_parent_cap_local_name = .;
+		LONG(0xffffffff);
+
+		/*
+		 * Platform-specific entry for Fiasco.OC.
+		 *
+		 * PIC-code compiled for Fiasco.OC, needs some PIC-compatible
+		 * way to enter the kernel, the fixed address of the kernel
+		 * entry code address needs to be found here.
+		 */
+		__l4sys_invoke_indirect = .;
+		LONG(0xeacff000);
+
 		/* bootstrapping code */
 		HEAD_TEXT
 #ifdef CONFIG_X86_32
@@ -112,14 +128,28 @@ SECTIONS
 		ENTRY_TEXT
 		IRQENTRY_TEXT
 		*(.fixup)
+		*(.text.*) /* put all Genode .text entries in here */
 		*(.gnu.warning)
+
+		. = ALIGN(0x08);
+
+		_ctors_start = .;
+		KEEP (*(.ctors))
+		KEEP (*(SORT(.ctors.*)))
+		KEEP (*(.init_array)) /* list of constructors specific for ARM eabi */
+		_ctors_end = .;
+		_dtors_start = .;
+		KEEP (*(SORT(.dtors.*)))
+		KEEP (*(.dtors))
+		_dtors_end = .;
+
 		/* End of text section */
 		_etext = .;
-	} :text = 0x9090
+	} : rw
 
-	NOTES :text :note
+	NOTES :rw
 
-	EXCEPTION_TABLE(16) :text = 0x9090
+	.eh_frame_hdr : { *(.eh_frame_hdr) }
 
 #if defined(CONFIG_DEBUG_RODATA)
 	/* .text should occupy whole number of pages */
@@ -152,9 +182,33 @@ SECTIONS
 		/* rarely changed data like cpu maps */
 		READ_MOSTLY_DATA(INTERNODE_CACHE_BYTES)
 
+		*(.data.*) /* put all Genode .data entries in here */
+
+
 		/* End of data section */
 		_edata = .;
-	} :data
+	} : rw
+
+	EXCEPTION_TABLE(16) : rw
+
+	/* exception frames for C++ */
+	.eh_frame : {
+		__eh_frame_start__ = .;
+		KEEP (*(.eh_frame))
+		LONG(0)
+	} : rw
+
+	.init_array : {
+		__init_array_start = .;
+		KEEP (*(SORT(.init_array.*)))
+		KEEP (*(.init_array))
+		__init_array_end = .;
+	}
+
+	.gcc_except_table : {
+		KEEP(*(.gcc_except_table))
+		KEEP(*(.gcc_except_table.*))
+	}
 
 #ifdef CONFIG_X86_64
 
@@ -366,6 +420,7 @@ SECTIONS
 		__bss_start = .;
 		*(.bss..page_aligned)
 		*(.bss)
+		*(.bss.*) /* put all Genode .bss entries in here */
 		. = ALIGN(PAGE_SIZE);
 		__bss_stop = .;
 	}
@@ -378,6 +433,7 @@ SECTIONS
 		__brk_limit = .;
 	}
 
+	_prog_img_end = .;
 	_end = .;
 
         STABS_DEBUG
diff --git a/arch/l4/kernel/arch-x86/x86_init.c b/arch/l4/kernel/arch-x86/x86_init.c
index f4dec4e..b14e161 100644
--- a/arch/l4/kernel/arch-x86/x86_init.c
+++ b/arch/l4/kernel/arch-x86/x86_init.c
@@ -38,7 +38,7 @@ void iommu_shutdown_noop(void) { }
 struct x86_init_ops x86_init __initdata = {
 
 	.resources = {
-		.probe_roms		= probe_roms,
+		.probe_roms		= x86_init_noop,
 		.reserve_resources	= reserve_standard_io_resources,
 		.memory_setup		= l4x_memory_setup,
 	},
diff --git a/arch/l4/kernel/dispatch.c b/arch/l4/kernel/dispatch.c
index 4ef10e4..83e2bc4 100644
--- a/arch/l4/kernel/dispatch.c
+++ b/arch/l4/kernel/dispatch.c
@@ -274,7 +274,7 @@ static int l4x_hybrid_return(struct thread_info *ti,
                 return 0;
 
 	if (l4_msgtag_is_page_fault(tag)) {
-		l4x_printf("HYBRID PF!!\n");
+		LOG_printf("HYBRID PF!!\n");
 		/* No exception IPC, it's a page fault, but shouldn't happen */
 		goto out_fail;
 	}
@@ -694,7 +694,7 @@ wait_again:
 			enter_kdebug("non hybrid in idle?!");
 		} else {
 			if (unlikely(l4x_handle_async_event(label, utcb, tag)))
-				l4x_printf("Async return with error\n");
+				LOG_printf("Async return with error\n");
 		}
 	}
 }
diff --git a/arch/l4/kernel/head.S b/arch/l4/kernel/head.S
index 302d211..8a8e96c 100644
--- a/arch/l4/kernel/head.S
+++ b/arch/l4/kernel/head.S
@@ -53,6 +53,7 @@ ENTRY(swapper_pg_dir)
 .previous
 #endif
 
+#ifdef NOT_GENODE
 #ifdef ARCH_arm
 .section ".text"
 .globl _start
@@ -82,6 +83,10 @@ __address_l4re_global_env:
 __address_l4lx_kinfo:
 	.long l4lx_kinfo
 .previous
+#endif
+#endif /* NOT_GENODE */
+
+#ifdef ARCH_arm
 .section .data.head, "wa"
 .p2align 12
 ENTRY(swapper_pg_dir)
diff --git a/arch/l4/kernel/main.c b/arch/l4/kernel/main.c
index d71a2b9..e1deb9b 100644
--- a/arch/l4/kernel/main.c
+++ b/arch/l4/kernel/main.c
@@ -305,7 +305,7 @@ static void l4x_configuration_sanity_check(const char *cmdline)
 	}
 #endif
 
-#ifndef CONFIG_L4_SERIAL
+#if 0 //ndef CONFIG_L4_SERIAL
 	if (strstr(cmdline, "console=ttyLv")) {
 		LOG_printf("Console output set to ttyLvx but driver not compiled in.\n");
 		enter_kdebug("L4 serial driver not enabled");
@@ -363,6 +363,12 @@ static void l4x_virt_to_phys_show(void)
 	}
 }
 
+void          l4x_irq_save(unsigned long flags)    { local_irq_save(flags);    }
+void          l4x_irq_restore(unsigned long flags) { local_irq_restore(flags); }
+unsigned long l4x_hz(void)                         { return HZ;                }
+int           l4x_nr_irqs(void)                    { return NR_IRQS;           }
+
+
 unsigned long l4x_virt_to_phys(volatile void * address)
 {
 	int i;
@@ -375,14 +381,14 @@ unsigned long l4x_virt_to_phys(volatile void * address)
 			       + l4x_phys_virt_addrs[i].phys;
 	}
 
-	l4x_virt_to_phys_show();
+//	l4x_virt_to_phys_show();
 	/* Whitelist: */
 
 	/* Debugging check: don't miss a translation, can give nasty
 	 *                  DMA problems */
-	l4x_printf("%s: Could not translate virt. address %p\n",
+	LOG_printf("%s: Could not translate virt. address %p\n",
 	           __func__, address);
-	WARN_ON(1);
+//	WARN_ON(1);
 
 	return __pa(address);
 }
@@ -414,7 +420,7 @@ void *l4x_phys_to_virt(unsigned long address)
 
 	/* Debugging check: don't miss a translation, can give nasty
 	 *                  DMA problems */
-	l4x_printf("%s: Could not translate phys. address 0x%lx\n",
+	LOG_printf("%s: Could not translate phys. address 0x%lx\n",
 	           __func__, address);
 	WARN_ON(1);
 
@@ -532,7 +538,7 @@ int l4x_re_resolve_name(const char *name, l4_cap_idx_t *cap)
 
 	r = l4re_ns_query_srv(entry->cap, n + 1, *cap);
 	if (r) {
-		l4x_printf("Failed to query name '%s': %s(%d)\n",
+		LOG_printf("Failed to query name '%s': %s(%d)\n",
 		           name, l4sys_errtostr(r), r);
 		L4XV_U(f);
 		return -ENOENT;
@@ -713,6 +719,7 @@ static const int at_exit_nr_of_functions
 	= sizeof(at_exit_functions) / sizeof(at_exit_functions[0]);
 static int __current_exititem;
 
+#if 0
 static struct cxa_atexit_item *__next_atexit(void)
 {
 	if (__current_exititem >= at_exit_nr_of_functions) {
@@ -721,20 +728,9 @@ static struct cxa_atexit_item *__next_atexit(void)
 	}
 	return &at_exit_functions[__current_exititem++];
 }
+#endif
 
-int __cxa_atexit(void (*f)(void *), void *arg, void *dso_handle)
-{
-	struct cxa_atexit_item *h = __next_atexit();
-
-	if (!h)
-		return -1;
-
-	h->f = f;
-	h->arg = arg;
-	h->dso_handle = dso_handle;
-
-	return 0;
-}
+extern int __cxa_atexit(void (*f)(void *), void *arg, void *dso_handle);
 
 void __cxa_finalize(void *dso_handle)
 {
@@ -790,9 +786,19 @@ static inline int l4x_is_writable_area(unsigned long a)
 }
 static int l4x_forward_pf(l4_umword_t addr, l4_umword_t pc, int extra_write)
 {
+#if 0
 	l4_msgtag_t tag;
 	l4_umword_t err;
 	l4_utcb_t *u = l4_utcb();
+#endif
+
+	if (!extra_write)
+		l4_touch_ro((void*)l4_trunc_page(addr), L4_LOG2_PAGESIZE);
+	else
+		l4_touch_rw((void*)l4_trunc_page(addr), L4_LOG2_PAGESIZE);
+
+	// TODO: Reenable this part
+#if 0
 
 	do {
 		l4_msg_regs_t *mr = l4_utcb_mr_u(u);
@@ -815,6 +821,7 @@ static int l4x_forward_pf(l4_umword_t addr, l4_umword_t pc, int extra_write)
 		// unresolvable page fault, we're supposed to trigger an
 		// exception
 		return 0;
+#endif
 
 	return 1;
 }
@@ -1054,7 +1061,7 @@ static void l4x_register_pointer_section(void *p_in_addr,
 	addr = (l4_addr_t)p_in_addr;
 	size = 1;
 	if (l4re_rm_find(&addr, &size, &off, &flags, &ds)) {
-		LOG_printf("Cannot anything at %p?!", p_in_addr);
+		LOG_printf("Cannot anything at %p\n?!", p_in_addr);
 		l4re_rm_show_lists();
 		enter_kdebug("l4re_rm_find failed");
 		return;
@@ -1254,7 +1261,7 @@ void __init l4x_setup_memory(char *cmdl,
 	                    0, "Main memory");
 
 	/* Reserve some part of the virtual address space for vmalloc */
-	l4x_vmalloc_memory_start = (unsigned long)l4x_main_memory_start;
+	l4x_vmalloc_memory_start = (unsigned long)l4x_main_memory_start + l4x_mainmem_size;
 	if (l4re_rm_reserve_area(&l4x_vmalloc_memory_start,
 #ifdef CONFIG_X86_32
 	                          __VMALLOC_RESERVE,
@@ -1381,6 +1388,10 @@ unsigned long l4x_get_isa_dma_memory_end(void)
 
 static void l4x_create_ugate(l4_cap_idx_t forthread, unsigned cpu)
 {
+	LOG_printf("thread=%lx cpu=%x\n", forthread, cpu);
+	l4x_user_gate[cpu] = forthread;
+
+#if 0
 	l4_msgtag_t r;
 
 	l4x_user_gate[cpu] = l4x_cap_alloc();
@@ -1401,6 +1412,7 @@ static void l4x_create_ugate(l4_cap_idx_t forthread, unsigned cpu)
 		l4_debugger_set_object_name(l4x_user_gate[cpu], n);
 #endif
 	}
+#endif
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
@@ -1890,11 +1902,11 @@ static inline void l4x_repnop_init(void) {}
 
 static int l4x_cpu_virt_phys_map_init(const char *boot_command_line)
 {
-	l4_umword_t max_cpus = 1;
-	l4_sched_cpu_set_t cs = l4_sched_cpu_set(0, 0, 0);
 	unsigned i;
 
 #ifdef CONFIG_SMP
+	l4_umword_t max_cpus = 1;
+	l4_sched_cpu_set_t cs = l4_sched_cpu_set(0, 0, 0);
 	char overbooking = 0;
 	char *p;
 
@@ -1964,6 +1976,8 @@ static int l4x_cpu_virt_phys_map_init(const char *boot_command_line)
 #endif
 
 #else /* UP */
+
+#if 0
 	if (l4_error(l4_scheduler_info(l4re_env()->scheduler,
 	                               &max_cpus, &cs)) == L4_EOK) {
 
@@ -1973,6 +1987,8 @@ static int l4x_cpu_virt_phys_map_init(const char *boot_command_line)
 		l4x_cpu_physmap[0].phys_id = p;
 	}
 #endif
+	l4x_cpu_physmap[0].phys_id = 0;
+#endif
 
 	LOG_printf("CPU mapping (l:p)[%d]: ", l4x_nr_cpus);
 	for (i = 0; i < l4x_nr_cpus; i++)
@@ -2018,6 +2034,7 @@ static long l4x_blink(int state)
 	printk("panic: going to sleep forever, bye\n");
 	L4XV_L(f);
 	LOG_printf("panic: going to sleep forever, bye\n");
+	enter_kdebug("PANIC");
 	l4_sleep_forever();
 	return 0;
 }
@@ -2298,7 +2315,7 @@ static void l4x_scan_hw_resources(void)
 	}
 }
 
-int __init_refok L4_CV main(int argc, char **argv)
+int __init_refok L4_CV linux_main(int argc, char **argv)
 {
 	l4lx_thread_t main_id;
 	extern char _end[];
@@ -2410,10 +2427,13 @@ int __init_refok L4_CV main(int argc, char **argv)
 
 	l4x_start_thread_id = l4re_env()->main_thread;
 
+#if 0
 	l4_thread_control_start();
 	l4_thread_control_commit(l4x_start_thread_id);
 	l4x_start_thread_pager_id
 		= l4_utcb_mr()->mr[L4_THREAD_CONTROL_MR_IDX_PAGER];
+#endif
+	l4x_start_thread_pager_id = l4re_env()->rm;
 
 #ifndef CONFIG_L4_VCPU
 #ifdef CONFIG_L4_TAMED
@@ -3180,6 +3200,10 @@ static inline int l4x_handle_pagefault(unsigned long pfa, unsigned long ip,
 		/* Not resolvable: Ooops */
 		LOG_printf("Non-resolvable page fault at %lx, ip %lx.\n", pfa, ip);
 		// will trigger an oops in caller
+
+#ifdef CONFIG_L4_DEBUG_SEGFAULTS
+		enter_kdebug("PF");
+#endif
 		return 0;
 	}
 
@@ -3560,7 +3584,9 @@ module_init(l4x_power_mgmt_init);
 void exit(int code)
 {
 	__cxa_finalize(0);
+#if 0
 	l4x_external_exit(code);
+#endif
 	LOG_printf("Still alive, going zombie???\n");
 	l4_sleep_forever();
 }
diff --git a/arch/l4/lib/pte.c b/arch/l4/lib/pte.c
index f59bf94..858f668 100644
--- a/arch/l4/lib/pte.c
+++ b/arch/l4/lib/pte.c
@@ -19,6 +19,9 @@
 #include <l4/sys/task.h>
 #include <l4/sys/kdebug.h>
 #include <l4/re/consts.h>
+#include <l4/log/log.h>
+
+extern void l4lx_memory_map_physical_page(unsigned long address);
 
 static void l4x_flush_page(struct mm_struct *mm,
                            unsigned long address,
@@ -78,7 +81,7 @@ static void l4x_flush_page(struct mm_struct *mm,
 	if (mm && !l4_is_invalid_cap(mm->context.task)) {
 		L4XV_V(f);
 		if (!mm->context.task)
-			l4x_printf("%s: Ups, task == 0\n", __func__);
+			LOG_printf("%s: Ups, task == 0\n", __func__);
 		/* Direct flush in the child, use virtual address in the
 		 * child address space */
 		L4XV_L(f);
@@ -94,10 +97,11 @@ static void l4x_flush_page(struct mm_struct *mm,
 		tag = l4_task_unmap(L4RE_THIS_TASK_CAP,
 			            l4_fpage(address & PAGE_MASK, size, flush_rights),
 			            L4_FP_OTHER_SPACES);
+		l4lx_memory_map_physical_page(address);
 		L4XV_U(f);
 	}
 	if (l4_error(tag))
-		l4x_printf("l4_task_unmap error %ld\n", l4_error(tag));
+		LOG_printf("l4_task_unmap error %ld\n", l4_error(tag));
 }
 
 #ifdef ARCH_arm
diff --git a/drivers/tty/serial/l4ser.c b/drivers/tty/serial/l4ser.c
index 3efd8ea..faa72bd 100644
--- a/drivers/tty/serial/l4ser.c
+++ b/drivers/tty/serial/l4ser.c
@@ -22,10 +22,12 @@
 #include <linux/serial.h>
 
 #include <l4/sys/vcon.h>
+#include <l4/sys/kdebug.h>
 #include <l4/sys/factory.h>
 #include <l4/sys/icu.h>
 #include <l4/re/c/namespace.h>
 #include <l4/re/c/util/cap.h>
+#include <l4/log/log.h>
 #include <asm/generic/setup.h>
 #include <asm/generic/cap_alloc.h>
 #include <asm/generic/util.h>
@@ -135,7 +137,10 @@ static void l4ser_tx_chars(struct uart_port *port)
 
 	if (port->x_char) {
 		L4XV_L(f);
+#if 0
 		l4_vcon_write(l4port->vcon_cap, &port->x_char, 1);
+#endif
+		LOG_printf("%c", port->x_char);
 		L4XV_U(f);
 		port->icount.tx++;
 		port->x_char = 0;
@@ -147,7 +152,14 @@ static void l4ser_tx_chars(struct uart_port *port)
 		if (c > L4_VCON_WRITE_SIZE)
 			c = L4_VCON_WRITE_SIZE;
 		L4XV_L(f);
+#if 0
 		l4_vcon_write(l4port->vcon_cap, &xmit->buf[xmit->tail], c);
+#endif
+		char *ptr = (char*)&xmit->buf[xmit->tail], old = ptr[c];
+		ptr[c] = 0;
+		LOG_printf("%s", ptr);
+		ptr[c] = old;
+
 		L4XV_U(f);
 		xmit->tail = (xmit->tail + c) & (UART_XMIT_SIZE - 1);
 		port->icount.tx += c;
@@ -267,7 +279,7 @@ static int __init l4ser_init_port(int num, const char *name)
 	if (l4ser_port[num].inited)
 		return 0;
 	l4ser_port[num].inited = 1;
-
+#if 0
 	if ((r = l4x_re_resolve_name(name, &l4ser_port[num].vcon_cap))) {
 		if (num == 0)
 			l4ser_port[num].vcon_cap = l4re_env()->log;
@@ -308,11 +320,13 @@ static int __init l4ser_init_port(int num, const char *name)
 		L4XV_U(f);
 		return -EIO;
 	}
-
+#endif
 	vcon_attr.i_flags = 0;
 	vcon_attr.o_flags = 0;
 	vcon_attr.l_flags = 0;
+#if 0
 	l4_vcon_set_attr(l4ser_port[num].vcon_cap, &vcon_attr);
+#endif
 	L4XV_U(f);
 
 	l4ser_port[num].port.uartclk   = 3686400;
@@ -356,7 +370,14 @@ l4ser_console_write(struct console *co, const char *s, unsigned int count)
 		if (c > L4_VCON_WRITE_SIZE)
 			c = L4_VCON_WRITE_SIZE;
 		L4XV_L(f);
+#if 0
 		l4_vcon_write(l4ser_port[co->index].vcon_cap, s, c);
+#endif
+		char *ptr = (char*)s, old = ptr[c];
+		ptr[c] = 0;
+		LOG_printf("%s", ptr);
+		ptr[c] = old;
+
 		L4XV_U(f);
 		count -= c;
 	} while (count);
@@ -403,6 +424,7 @@ static int __init l4ser_serial_init(void)
 	int ret, i;
 
 	printk(KERN_INFO "L4 serial driver\n");
+	LOG_printf("L4 serial driver\n");
 
 	if (l4ser_init_port(0, PORT0_NAME))
 		return -ENODEV;