more working

alloc.ccp

@@ -377,6 +377,8 @@ void kCapability::invalidate ():
 		return
 	if sibling_prev.valid ():
 		sibling_prev->sibling_next = sibling_next
+	else if parent.valid ():
+		parent->children = sibling_next
 	else if (unsigned)target & ~KERNEL_MASK:
 		target->capabilities = sibling_next
 	else:
@@ -497,19 +499,19 @@ static void check_receiver (kReceiver *r, kCapRef cap, unsigned line):
 			dpanic (line, "consistency bug in capabilities")
 	else:
 		if cap->protected_data.l != (unsigned)r:
-			dbg_log ("Buggy: ")
+			dbg_log ("Buggy: receiver=")
 			dbg_log_num ((unsigned)r)
-			dbg_log (" ")
+			dbg_log ("; caps=")
 			dbg_log_num ((unsigned)cap.caps)
-			dbg_log (" ")
+			dbg_log ("; caps mem=")
 			dbg_log_num ((unsigned)cap.caps->address_space)
-			dbg_log (" ")
+			dbg_log ("; cap=")
 			dbg_log_num ((unsigned)cap.deref ())
-			dbg_log (" ")
+			dbg_log ("; cap target=")
 			dbg_log_num ((unsigned)cap->target)
-			dbg_log ("/")
+			dbg_log ("; protected=")
 			dbg_log_num (cap->protected_data.l)
-			dbg_log ("\n")
+			dbg_log ("!= receiver\n")
 			dpanic (line, "consistency bug in kernel capabilities")
 	for kCapRef c = cap->children; c.valid (); c = c->sibling_next:
 		check_receiver (r, c, line)

boot-programs/init.ccp

@@ -53,6 +53,9 @@ void *operator new[] (unsigned size):
 	//kdebug ("\n")
 	return ret
 
+void *operator new (unsigned size):
+	return new char[size]
+
 struct file:
 	unsigned size
 	// Only the first 16 characters of the name are used, because that's much easier.
@@ -328,9 +331,80 @@ static void kdebug_name (char const *t, file *f):
 			kdebug_char (f->name[j])
 	kdebug ("...")
 
+struct Dev:
+	static Dev *devs
+	Dev *next
+	unsigned code, idx
+	Device dev
+	static Dev *find (unsigned c, unsigned i):
+		for Dev *d = devs; d; d = d->next:
+			if d->code == c && d->idx == i:
+				return d
+		return NULL
+	static void add (unsigned c, unsigned i, Kernel::Cap cap):
+		while find (c, i):
+			++i
+		Dev *d = new Dev ()
+		d->next = devs
+		d->code = c
+		d->idx = i
+		d->dev = cap
+		devs = d
+	static void kdebug_list ():
+		for Dev *d = devs; d; d = d->next:
+			kdebug (">")
+			kdebug_num (d->code)
+			kdebug (":")
+			kdebug_num (d->idx)
+
+Dev *Dev::devs
+
+void handle_init ():
+	while true:
+		Kernel::wait ()
+		switch Kernel::recv.data[0].l:
+			case Parent::PROVIDE_DEVICE:
+				Dev::add (Kernel::recv.data[1].l, Kernel::recv.data[0].h, Kernel::get_arg ())
+				kdebug ("added dev ")
+				kdebug_num (Kernel::recv.data[1].l)
+				kdebug (":")
+				kdebug_num (Kernel::recv.data[0].h)
+				kdebug ("\n")
+				Kernel::recv.reply.invoke ()
+				break
+			case Parent::GET_DEVICE:
+				Dev *d = Dev::find (Kernel::recv.data[1].l, Kernel::recv.data[0].h)
+				if d:
+					kdebug ("given dev ")
+					kdebug_num (Kernel::recv.data[1].l)
+					kdebug (":")
+					kdebug_num (Kernel::recv.data[0].h)
+					kdebug ("\n")
+					Kernel::Cap cap = d->dev.create_user (Kernel::my_memory)
+					d->dev.use (cap)
+					Kernel::recv.reply.invoke (0, 0, cap.copy ())
+					Kernel::free_cap (cap)
+				else:
+					kdebug ("device not found: ")
+					kdebug_num (Kernel::recv.data[1].l)
+					kdebug (":")
+					kdebug_num (Kernel::recv.data[0].h)
+					Dev::kdebug_list ()
+					kdebug ("\n")
+					Kernel::recv.reply.invoke (~0, ~0)
+					Kernel::panic (0)
+				break
+			case Parent::INIT_DONE:
+				kdebug ("init done\n")
+				return
+			default:
+				kdebug ("unknown init request\n")
+				Kernel::panic (0)
+
 Kernel::Num start ():
 	// Wait for the debugging device to be active, in case there is one.
 	Kernel::schedule ()
+	//Dev::devs = NULL
 	init_alloc ()
 	top_memory = Kernel::get_top_memory ()
 	Directory root = receive_devices ()
@@ -344,10 +418,11 @@ Kernel::Num start ():
 		kdebug_name ("loading ", &files[index[i]])
 		run (&files[index[i]], files[index[i]].name[0] == '#')
 		kdebug ("running\n")
-		Kernel::schedule ()
+		handle_init ()
 	root.unlock_ro ()
 	Kernel::free_slot (slot)
 	Kernel::my_memory.destroy (caps)
 	while true:
-		Kernel::wait ()
-		kdebug ("request!\n")
+		handle_init ()
+		//Kernel::wait ()
+		//kdebug ("request!\n")

devices.hhp

@@ -141,6 +141,7 @@ struct Parent : public Kernel::Cap:
 		PROVIDE_DEVICE
 		GET_MEMORY
 		PROVIDE_MEMORY
+		INIT_DONE
 		EXIT
 		ID
 	// Get a device handle.
@@ -158,6 +159,9 @@ struct Parent : public Kernel::Cap:
 	Kernel::Cap provide_memory (unsigned limit):
 		icall (CAP_MASTER_DIRECT | PROVIDE_MEMORY, limit)
 		return Kernel::get_arg ()
+	// Signal the parent that the initialisation phase is over.
+	void init_done ():
+		invoke (CAP_MASTER_DIRECT | INIT_DONE)
 	// Exit the program.  The parent does not reply, but kills the process.
 	void exit (Kernel::Num code):
 		call (CAP_MASTER_DIRECT | EXIT, code)

invoke.ccp

@@ -602,6 +602,9 @@ static void page_invoke (unsigned cmd, unsigned target, Kernel::Num protected_da
 			if c->data[0].h & Kernel::Page::READONLY || cmd & Kernel::Page::READONLY:
 				t->flags |= Kernel::Page::READONLY
 			if !(page->flags & Kernel::Page::FRAME):
+				dbg_log ("share problem: ")
+				dbg_log_num (page->flags)
+				dbg_log ("\n")
 				dpanic (0, "sharing nothing results in lost page")
 				kPage_arch_update_mapping (t)
 				break
@@ -718,6 +721,8 @@ static void page_invoke (unsigned cmd, unsigned target, Kernel::Num protected_da
 			dpanic (0, "invalid page operation")
 			reply_num (Kernel::ERR_INVALID_OPERATION)
 			return
+	if page->flags > 0x7f:
+		dpanic (page->flags, "weird output from page operation")
 	reply_num (0)
 
 static void print_cap (kCapRef cap, kCapRef self):

mips/arch.ccp

@@ -138,6 +138,19 @@ static void tlb_reset (kMemory *mem, unsigned address, unsigned value):
 		else:
 			cp0_set (CP0_ENTRY_LO0, value)
 		__asm__ volatile ("tlbwi")
+		#if 0
+		dbg_log ("tlb reset ")
+		unsigned hi, lo0, lo1
+		cp0_get (CP0_ENTRY_LO0, lo0)
+		cp0_get (CP0_ENTRY_LO1, lo1)
+		cp0_get (CP0_ENTRY_HI, hi)
+		dbg_log_num (lo0)
+		dbg_log (":")
+		dbg_log_num (lo1)
+		dbg_log (" for ")
+		dbg_log_num (hi)
+		dbg_log ("\n")
+		#endif
 
 static unsigned make_entry_lo (kPage *page):
 	//dbg_log_line ()

mips/interrupts.ccp

@@ -84,13 +84,15 @@ kThread *tlb_refill ():
 		cp0_set (CP0_ENTRY_LO0, t->entrylo[idx])
 		cp0_set (CP0_ENTRY_LO1, t->entrylo[idx + 1])
 		__asm__ volatile ("tlbwr")
-		//dbg_log ("tlb refill ")
-		//dbg_log_num (t->entrylo[idx])
-		//dbg_log (":")
-		//dbg_log_num (t->entrylo[idx + 1])
-		//dbg_log (" for ")
-		//dbg_log_num (EntryHi)
-		//dbg_log ("\n")
+		#if 0
+		dbg_log ("tlb refill ")
+		dbg_log_num (t->entrylo[idx])
+		dbg_log (":")
+		dbg_log_num (t->entrylo[idx + 1])
+		dbg_log (" for ")
+		dbg_log_num (EntryHi)
+		dbg_log ("\n")
+		#endif
 	handle_exit ()
 	return current
 

mips/nanonote/Makefile.arch

@@ -29,14 +29,14 @@ arch_iris_sources = mips/interrupts.cc mips/arch.cc
 boot_sources = mips/init.cc mips/nanonote/board.cc
 arch_headers = mips/arch.hh mips/nanonote/jz4740.hh mips/nanonote/board.hh
 boot_threads = init udc
-programs = \#nanonote-gpio \#buzzer \#lcd
+programs = \#nanonote-gpio \#buzzer \#lcd metronome
 
 all: test
 
 test: iris.raw mips/nanonote/server/usb-server mips/nanonote/sdram-setup.raw $(addsuffix .elf,$(addprefix fs/,$(programs)))
 	echo "reboot 0xa$(shell /bin/sh -c '$(OBJDUMP) -t iris.elf | grep __start$$ | cut -b2-8')" | nc localhost 5050
 
-mips/nanonote/server/usb-server: mips/nanonote/server/usb-server.ccp mips/nanonote/server/Makefile.am mips/nanonote/server/configure.ac
+mips/nanonote/server/usb-server: mips/nanonote/server/usb-server.ccp mips/nanonote/server/Makefile.am mips/nanonote/server/configure.ac devices.hh
 	$(MAKE) -C mips/nanonote/server
 	echo "shutdown" | nc localhost 5050
 	sleep 1
@@ -60,7 +60,7 @@ $(addsuffix .elf,$(boot_threads)): TARGET_FLAGS = -I.
 $(addsuffix .elf,$(boot_threads)): LDFLAGS = -EL
 $(addprefix fs/,$(addsuffix .elf,$(programs))): LDFLAGS = -EL
 $(addprefix boot-programs/,$(addsuffix .cc,$(boot_threads))): devices.hh keys.hh
-source/lcd.o: source/charset.data
+source/\#lcd.o: source/charset.data
 
 source/charset.data: source/charset
 	$< > $@

panic.ccp

@@ -51,22 +51,20 @@ static void print_addr (char const *t, unsigned addr):
 	unsigned de = addr >> 21
 	unsigned te = (addr >> 12) & ((1 << 9) - 1)
 	if de < 0x400 && old_current && old_current->address_space->arch.directory && old_current->address_space->arch.directory[de]:
-		dbg_log ("; page = ")
-		dbg_log_num ((unsigned)old_current->address_space->arch.directory[de]->page[te])
 		dbg_log ("; EntryLo = ")
 		dbg_log_num (old_current->address_space->arch.directory[de]->entrylo[te])
-		dbg_log ("\n")
 	else:
-		dbg_log ("; no directory or page table\n")
+		dbg_log ("; no directory or page table")
 	if old_current:
 		cp0_set (CP0_ENTRY_HI, (addr & (PAGE_MASK << 1)) | old_current->address_space->arch.asid)
 		__asm__ volatile ("tlbp")
 		unsigned idx, hi
 		cp0_get (CP0_INDEX, idx)
-		dbg_log ("tlb index: ")
+		dbg_log ("; tlb index: ")
 		if idx & (1 << 31):
-			dbg_log ("none")
+			dbg_log ("none\n")
 		else:
+			__asm__ volatile ("tlbr")
 			dbg_log_num (idx, 2)
 			dbg_log ("; EntryLo = ")
 			unsigned lo
@@ -80,7 +78,7 @@ static void print_addr (char const *t, unsigned addr):
 		for int i = -4; i < 4; ++i:
 			dbg_log (" ")
 			dbg_log_num (((unsigned *)addr)[i])
-	dbg_log ("\n")
+		dbg_log ("\n")
 
 static void panic_message (unsigned n, const char *line, char const *name, char const *message):
 	unsigned vaddr, epc

source/#buzzer.ccp

@@ -53,7 +53,6 @@ enum codes:
 	BUZZER = 32
 
 Kernel::Num start ():
-	kdebug ("buzzer started.\n")
 	map_tcu ()
 
 	DevBuzzer buzzer
@@ -63,6 +62,7 @@ Kernel::Num start ():
 	Kernel::free_cap (dev)
 	unsigned user (~0)
 	unsigned next_user (0)
+	Kernel::my_parent.init_done ()
 	while true:
 		Kernel::wait ()
 		switch Kernel::recv.protected_data.h:

source/#gpio.ccp

@@ -278,6 +278,7 @@ Kernel::Num start ():
 	GPIO_GPIER (GPIO_KBD_ROW_PORT) = (1 << GPIO_TP_LEFT) | (1 << GPIO_TP_RIGHT) | GPIO_KBD_ROW_MASK
 	Kernel::register_interrupt (IRQ_GPIO0)
 
+	Kernel::my_parent.init_done ()
 	while true:
 		Kernel::schedule ()
 		Kernel::wait ()

source/#lcd.ccp

@@ -312,8 +312,8 @@ Kernel::Num start ():
 	bool is_on = true
 	unsigned backlight_user = 0
 	Kernel::Num current_backlight = 0
+	Kernel::my_parent.init_done ()
 	while true:
-		//log_str ("Wachten...\n")
 		Kernel::wait ()
 		//log_msg ()
 		switch Kernel::recv.protected_data.h:

source/#nanonote-gpio.ccp

@@ -211,6 +211,7 @@ Kernel::Num start ():
 	unsigned user (~0)
 	unsigned next_user (0)
 	Kernel::register_interrupt (IRQ_GPIO3)
+	Kernel::my_parent.init_done ()
 	while true:
 		Kernel::wait ()
 		switch Kernel::recv.protected_data.h:

source/metronome.ccp

@@ -29,6 +29,7 @@ Kernel::Num start ():
 	// Frequency of single pulses in hertz.
 	unsigned freq = 1000
 	bool running (false)
+	Kernel::my_parent.init_done ()
 	while true:
 		Kernel::wait ()
 		switch Kernel::recv.protected_data.l: