Support passing of OF flat trees to the kernel.

Patch by Pantelis Antoniou, 04 Sep 2005

CHANGELOG

@@ -2,6 +2,9 @@
 Changes for U-Boot 1.1.4:
 ======================================================================
 
+* Support passing of OF flat trees to the kernel.
+  Patch by Pantelis Antoniou, 04 Sep 2005
+
 * Cleanup
 
 * Add support for NetSilicon NS7520 processor.

Makefile

@@ -1598,6 +1598,9 @@ lubbock_config	:	unconfig
 logodl_config	:	unconfig
 	@./mkconfig $(@:_config=) arm pxa logodl
 
+pxa255_idp_config:	unconfig
+	@./mkconfig $(@:_config=) arm pxa pxa255_idp
+
 wepep250_config	:	unconfig
 	@./mkconfig $(@:_config=) arm pxa wepep250
 

README

@@ -399,6 +399,20 @@ The following options need to be configured:
 		expect it to be in bytes, others in MB.
 		Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes.
 
+		CONFIG_OF_FLAT_TREE
+
+		New kernel versions are expecting firmware settings to be
+		passed using flat open firmware trees.
+		The environment variable "disable_of", when set, disables this
+		functionality.
+
+		CONFIG_OF_FLAT_TREE_MAX_SIZE
+
+		The maximum size of the constructed OF tree.
+
+		OF_CPU - The proper name of the cpus node.
+		OF_TBCLK - The timebase frequency.
+
 - Serial Ports:
 		CFG_PL010_SERIAL
 

board/barco/barco.c

@@ -90,17 +90,17 @@ long int initdram (int board_type)
 	long mear1;
 	long emear1;
 
-	size = get_ram_size(CFG_SDRAM_BASE, CFG_MAX_RAM_SIZE);
+	size = get_ram_size (CFG_SDRAM_BASE, CFG_MAX_RAM_SIZE);
 
 	new_bank0_end = size - 1;
-	mear1 = mpc824x_mpc107_getreg(MEAR1);
-	emear1 = mpc824x_mpc107_getreg(EMEAR1);
+	mear1 = mpc824x_mpc107_getreg (MEAR1);
+	emear1 = mpc824x_mpc107_getreg (EMEAR1);
 	mear1 = (mear1  & 0xFFFFFF00) |
 		((new_bank0_end & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT);
 	emear1 = (emear1 & 0xFFFFFF00) |
 		((new_bank0_end & MICR_ADDR_MASK) >> MICR_EADDR_SHIFT);
-	mpc824x_mpc107_setreg(MEAR1, mear1);
-	mpc824x_mpc107_setreg(EMEAR1, emear1);
+	mpc824x_mpc107_setreg (MEAR1, mear1);
+	mpc824x_mpc107_setreg (EMEAR1, emear1);
 
 	return (size);
 }
@@ -113,11 +113,11 @@ static struct pci_config_table pci_barcohydra_config_table[] = {
 	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x0f, PCI_ANY_ID,
 	  pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
 				       PCI_ENET0_MEMADDR,
-				       PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER }},
+				       PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER } },
 	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x10, PCI_ANY_ID,
 	  pci_cfgfunc_config_device, { PCI_ENET1_IOADDR,
 				       PCI_ENET1_MEMADDR,
-				       PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER }},
+				       PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER } },
 	{ }
 };
 #endif
@@ -128,68 +128,66 @@ struct pci_controller hose = {
 #endif
 };
 
-void pci_init_board(void)
+void pci_init_board (void)
 {
-	pci_mpc824x_init(&hose);
+	pci_mpc824x_init (&hose);
 }
 
-int write_flash(char *addr, char value)
+int write_flash (char *addr, char value)
 {
 	char *adr = (char *)0xFF800000;
 	int cnt = 0;
 	char status,oldstatus;
-	*(adr+0x55) = 0xAA;
 
-	udelay(1);
-	*(adr+0xAA) = 0x55;
-	udelay(1);
-	*(adr+0x55) = 0xA0;
-	udelay(1);
+	*(adr+0x55) = 0xAA; udelay (1);
+	*(adr+0xAA) = 0x55; udelay (1);
+	*(adr+0x55) = 0xA0; udelay (1);
 	*addr = value;
 
 	status = *addr;
-	do{
-
+	do {
 		oldstatus = status;
 		status = *addr;
 
-		if ((oldstatus & 0x40) == (status & 0x40)){
+		if ((oldstatus & 0x40) == (status & 0x40)) {
 			return 4;
 		}
 		cnt++;
-		if (cnt > 10000){
+		if (cnt > 10000) {
 			return 2;
 		}
-	}while( (status & 0x20) == 0 );
+	} while ( (status & 0x20) == 0 );
 
 	oldstatus = *addr;
 	status = *addr;
 
-	if ((oldstatus & 0x40) == (status & 0x40)) return 0;
-	else {
+	if ((oldstatus & 0x40) == (status & 0x40)) {
+		return 0;
+	} else {
 		*(adr+0x55) = 0xF0;
 		return 1;
 	}
 }
 
-unsigned update_flash(unsigned char* buf){
-	switch((*buf) & 0x3){
-		case TRY_WORKING:
-			printf("found 3 and converted it to 2\n");
-			write_flash(buf, (*buf) & 0xFE);
-			*((unsigned char *)0xFF800000) = 0xF0;
-			udelay(100);
-			printf("buf [%#010x] %#010x\n",buf,(*buf));
-		case BOOT_WORKING :
-			return BOOT_WORKING;
+unsigned update_flash (unsigned char *buf)
+{
+	switch ((*buf) & 0x3) {
+	case TRY_WORKING:
+		printf ("found 3 and converted it to 2\n");
+		write_flash (buf, (*buf) & 0xFE);
+		*((unsigned char *)0xFF800000) = 0xF0;
+		udelay (100);
+		printf ("buf [%#010x] %#010x\n", buf, (*buf));
+		/* XXX - fall through??? */
+	case BOOT_WORKING :
+		return BOOT_WORKING;
 	}
 	return BOOT_DEFAULT;
 }
 
-unsigned scan_flash(void)
+unsigned scan_flash (void)
 {
 	char section[] =  "kernel";
-	ulong   sp;
 	int cfgFileLen  =  (CFG_FLASH_ERASE_SECTOR_LENGTH >> 1);
 	int sectionPtr  = 0;
 	int foundItem   = 0; /* 0: None, 1: section found, 2: "=" found */
@@ -198,57 +196,54 @@ unsigned scan_flash(void)
 
 	buf = (unsigned char*)(CFG_FLASH_RANGE_BASE + CFG_FLASH_RANGE_SIZE \
 			- CFG_FLASH_ERASE_SECTOR_LENGTH);
-	for(bufPtr = 0; bufPtr < cfgFileLen; ++bufPtr){
+	for (bufPtr = 0; bufPtr < cfgFileLen; ++bufPtr) {
 		if ((buf[bufPtr]==0xFF) && (*(int*)(buf+bufPtr)==0xFFFFFFFF)) {
 			return BOOT_DEFAULT;
 		}
-		switch(foundItem)
-		{
-			/* This is the scanning loop, we try to find a particular
-			 * quoted value
-			 */
-			case 0:
-				if((section[sectionPtr] == 0)){
-					++foundItem;
-				}
-				else if(buf[bufPtr] == section[sectionPtr]){
-					++sectionPtr;
-				}
-				else {
-					sectionPtr = 0;
-				}
-				break;
-			case 1:
+		/* This is the scanning loop, we try to find a particular
+		 * quoted value
+		 */
+		switch (foundItem) {
+		case 0:
+			if ((section[sectionPtr] == 0)) {
 				++foundItem;
-				break;
-			case 2:
-				++foundItem;
-				break;
-			case 3:
-			default:
-				return update_flash(buf[bufPtr - 1]);
+			} else if (buf[bufPtr] == section[sectionPtr]) {
+				++sectionPtr;
+			} else {
+				sectionPtr = 0;
+			}
+			break;
+		case 1:
+			++foundItem;
+			break;
+		case 2:
+			++foundItem;
+			break;
+		case 3:
+		default:
+			return update_flash (&buf[bufPtr - 1]);
 		}
 	}
 
-	printf("Failed to read %s\n",section);
+	printf ("Failed to read %s\n",section);
 	return BOOT_DEFAULT;
 }
 
-TSBootInfo* find_boot_info(void)
+TSBootInfo* find_boot_info (void)
 {
-	unsigned bootimage = scan_flash();
-	TSBootInfo* info = (TSBootInfo*)malloc(sizeof(TSBootInfo));
-
-	switch(bootimage){
-		case TRY_WORKING:
-				info->address = CFG_WORKING_KERNEL_ADDRESS;
-				break;
-		case BOOT_WORKING :
-				info->address = CFG_WORKING_KERNEL_ADDRESS;
-				break;
-		case BOOT_DEFAULT:
-		default:
-				info->address= CFG_DEFAULT_KERNEL_ADDRESS;
+	unsigned bootimage = scan_flash ();
+	TSBootInfo* info = (TSBootInfo*)malloc (sizeof(TSBootInfo));
+
+	switch (bootimage) {
+	case TRY_WORKING:
+		info->address = CFG_WORKING_KERNEL_ADDRESS;
+		break;
+	case BOOT_WORKING :
+		info->address = CFG_WORKING_KERNEL_ADDRESS;
+		break;
+	case BOOT_DEFAULT:
+	default:
+		info->address= CFG_DEFAULT_KERNEL_ADDRESS;
 
 	}
 	info->size = *((unsigned int *)(info->address ));
@@ -256,43 +251,44 @@ TSBootInfo* find_boot_info(void)
 	return info;
 }
 
-void barcobcd_boot(void)
+void barcobcd_boot (void)
 {
 	TSBootInfo* start;
 	char *bootm_args[2];
 	char *buf;
 	int cnt;
+	extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
 
 	buf = (char *)(0x00800000);
 	/* make certain there are enough chars to print the command line here!
 	 */
-	bootm_args[0]=(char *)malloc(16*sizeof(char));
-	bootm_args[1]=(char *)malloc(16*sizeof(char));
+	bootm_args[0] = (char *)malloc (16*sizeof(char));
+	bootm_args[1] = (char *)malloc (16*sizeof(char));
 
-	start = find_boot_info();
+	start = find_boot_info ();
 
-	printf("Booting kernel at address %#10x with size %#10x\n",
+	printf ("Booting kernel at address %#10x with size %#10x\n",
 			start->address, start->size);
 
 	/* give length of the kernel image to bootm */
-	sprintf(bootm_args[0],"%x",start->size);
+	sprintf (bootm_args[0],"%x",start->size);
 	/* give address of the kernel image to bootm */
-	sprintf(bootm_args[1],"%x",buf);
+	sprintf (bootm_args[1],"%x",buf);
 
-	printf("flash address: %#10x\n",start->address+8);
-	printf("buf address: %#10x\n",buf);
+	printf ("flash address: %#10x\n",start->address+8);
+	printf ("buf address: %#10x\n",buf);
 
 	/* aha, we reserve 8 bytes here... */
-	for (cnt = 0; cnt < start->size ; cnt++){
+	for (cnt = 0; cnt < start->size ; cnt++) {
 		buf[cnt] = ((char *)start->address)[cnt+8];
 	}
 
 	/* initialise RAM memory */
 	*((unsigned int *)0xFEC00000) = 0x00141A98;
-	do_bootm(NULL,0,2,bootm_args);
+	do_bootm (NULL,0,2,bootm_args);
 }
 
-int barcobcd_boot_image(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+int barcobcd_boot_image (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 {
 #if 0
 	if (argc > 1) {
@@ -300,7 +296,7 @@ int barcobcd_boot_image(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 		return 1;
 	}
 #endif
-	barcobcd_boot();
+	barcobcd_boot ();
 
 	return 0;
 }
@@ -308,19 +304,19 @@ int barcobcd_boot_image(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 /* Currently, boot_working and boot_default are the same command. This is
  * left in here to see what we'll do in the future */
 
-U_BOOT_CMD(
+U_BOOT_CMD (
 		try_working, 1, 1, barcobcd_boot_image,
 		" try_working - check flash value and boot the appropriate image\n",
 		"\n"
 	  );
 
-U_BOOT_CMD(
+U_BOOT_CMD (
 		boot_working, 1, 1, barcobcd_boot_image,
 		" boot_working - check flash value and boot the appropriate image\n",
 		"\n"
 	  );
 
-U_BOOT_CMD(
+U_BOOT_CMD (
 		boot_default, 1, 1, barcobcd_boot_image,
 		" boot_default - check flash value and boot the appropriate image\n",
 		"\n"
@@ -328,13 +324,40 @@ U_BOOT_CMD(
 /*
  * We are not using serial communication, so just provide empty functions
  */
-int serial_init(void){return 0;}
-void serial_setbrg(void){}
-void serial_putc(const char c){}
-void serial_puts(const char *c){}
-void serial_addr(unsigned int i){}
-int serial_getc(void){return 0;}
-int serial_tstc(void){return 0;}
-
-unsigned long post_word_load(void){return 0l;};
-void post_word_store(unsigned long val){}
+int serial_init (void)
+{
+	return 0;
+}
+void serial_setbrg (void)
+{
+	return;
+}
+void serial_putc (const char c)
+{
+	return;
+}
+void serial_puts (const char *c)
+{
+	return;
+}
+void serial_addr (unsigned int i)
+{
+	return;
+}
+int serial_getc (void)
+{
+	return 0;
+}
+int serial_tstc (void)
+{
+	return 0;
+}
+
+unsigned long post_word_load (void)
+{
+	return 0l;
+}
+void post_word_store (unsigned long val)
+{
+	return;
+}

common/Makefile

@@ -46,7 +46,7 @@ COBJS	= main.o ACEX1K.o altera.o bedbug.o circbuf.o \
 	  env_nand.o env_dataflash.o env_flash.o env_eeprom.o \
 	  env_nvram.o env_nowhere.o \
 	  exports.o \
-	  flash.o fpga.o \
+	  flash.o fpga.o ft_build.o \
 	  hush.o kgdb.o lcd.o lists.o lynxkdi.o \
 	  memsize.o miiphybb.o miiphyutil.o \
 	  s_record.o serial.o soft_i2c.o soft_spi.o spartan2.o spartan3.o \

common/cmd_bootm.c

@@ -34,6 +34,10 @@
 #include <environment.h>
 #include <asm/byteorder.h>
 
+#ifdef CONFIG_OF_FLAT_TREE
+#include <ft_build.h>
+#endif
+
  /*cmd_boot.c*/
  extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
 
@@ -489,6 +493,11 @@ fixup_silent_linux ()
 }
 #endif /* CONFIG_SILENT_CONSOLE */
 
+#ifdef CONFIG_OF_FLAT_TREE
+extern const unsigned char oftree_dtb[];
+extern const unsigned int oftree_dtb_len;
+#endif
+
 #ifdef CONFIG_PPC
 static void
 do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
@@ -511,6 +520,9 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 	bd_t	*kbd;
 	void	(*kernel)(bd_t *, ulong, ulong, ulong, ulong);
 	image_header_t *hdr = &header;
+#ifdef CONFIG_OF_FLAT_TREE
+	char	*of_flat_tree;
+#endif
 
 	if ((s = getenv ("initrd_high")) != NULL) {
 		/* a value of "no" or a similar string will act like 0,
@@ -776,15 +788,26 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 		initrd_end = 0;
 	}
 
+#ifdef CONFIG_OF_FLAT_TREE
+	if (initrd_start == 0)
+		of_flat_tree = (char *)(((ulong)kbd - OF_FLAT_TREE_MAX_SIZE -
+					sizeof(bd_t)) & ~0xF);
+	else
+		of_flat_tree = (char *)((initrd_start - OF_FLAT_TREE_MAX_SIZE -
+					sizeof(bd_t)) & ~0xF);
+#endif
 
 	debug ("## Transferring control to Linux (at address %08lx) ...\n",
 		(ulong)kernel);
 
 	SHOW_BOOT_PROGRESS (15);
 
+#ifndef CONFIG_OF_FLAT_TREE
+
 #if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
 	unlock_ram_in_cache();
 #endif
+
 	/*
 	 * Linux Kernel Parameters:
 	 *   r3: ptr to board info data
@@ -794,6 +817,25 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 	 *   r7: End   of command line string
 	 */
 	(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
+
+#else
+	ft_setup(of_flat_tree, OF_FLAT_TREE_MAX_SIZE, kbd);
+	/* ft_dump_blob(of_flat_tree); */
+
+#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
+	unlock_ram_in_cache();
+#endif
+	/*
+	 * Linux Kernel Parameters:
+	 *   r3: ptr to OF flat tree, followed by the board info data
+	 *   r4: initrd_start or 0 if no initrd
+	 *   r5: initrd_end - unused if r4 is 0
+	 *   r6: Start of command line string
+	 *   r7: End   of command line string
+	 */
+	(*kernel) ((bd_t *)of_flat_tree, initrd_start, initrd_end, cmd_start, cmd_end);
+
+#endif
 }
 #endif /* CONFIG_PPC */
 

common/cmd_immap.c

@@ -318,11 +318,20 @@ int
 do_iopset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 {
 	uint rcode = 0;
+	iopin_t iopin;
 	static uint port = 0;
 	static uint pin = 0;
 	static uint value = 0;
-	static enum { DIR, PAR, SOR, ODR, DAT, INT } cmd = DAT;
-	iopin_t iopin;
+	static enum {
+		DIR,
+		PAR,
+		SOR,
+		ODR,
+		DAT,
+#if defined(CONFIG_8xx)
+		INT
+#endif
+	} cmd = DAT;
 
 	if (argc != 5) {
 		puts ("iopset PORT PIN CMD VALUE\n");

cpu/arm920t/at91rm9200/ether.c

@@ -184,7 +184,7 @@ int eth_init (bd_t * bd)
 
 	/* Init Ehternet buffers */
 	for (i = 0; i < RBF_FRAMEMAX; i++) {
-		rbfdt[i].addr = rbf_framebuf[i];
+		rbfdt[i].addr = (unsigned long)rbf_framebuf[i];
 		rbfdt[i].size = 0;
 	}
 	rbfdt[RBF_FRAMEMAX - 1].addr |= RBF_WRAP;

include/configs/AP1000.h

@@ -24,19 +24,19 @@
 
 #undef DEBUG
 
-#define CONFIG_405  1	   /* This is a PPC405 CPU     */
-#define CONFIG_4xx  1	   /* ...member of PPC4xx family   */
+#define CONFIG_405	1		/* This is a PPC405 CPU	    */
+#define CONFIG_4xx	1		/* ...member of PPC4xx family	*/
 
-#define CONFIG_AP1000  1   /* ...on an AP1000 board    */
+#define CONFIG_AP1000	1		/* ...on an AP1000 board    */
 
-#define CONFIG_PCI 1
+#define CONFIG_PCI	1
 
-#define CFG_HUSH_PARSER		1	/* use "hush" command parser	*/
-#define CFG_PROMPT			"0> "
+#define CFG_HUSH_PARSER 1		/* use "hush" command parser	*/
+#define CFG_PROMPT		"0> "
 #define CFG_PROMPT_HUSH_PS2	"> "
 
-#define CONFIG_COMMAND_EDIT 1
-#define CONFIG_COMMAND_HISTORY 1
+#define CONFIG_COMMAND_EDIT	1
+#define CONFIG_COMMAND_HISTORY	1
 #define CONFIG_COMPLETE_ADDRESSES 1
 
 #define CFG_ENV_IS_IN_FLASH	1
@@ -50,10 +50,10 @@
 #endif
 #endif
 
-#define CONFIG_BAUDRATE	    57600
-#define CONFIG_BOOTDELAY    3  /* autoboot after 3 seconds */
+#define CONFIG_BAUDRATE		57600
+#define CONFIG_BOOTDELAY	3	/* autoboot after 3 seconds */
 
-#define CONFIG_BOOTCOMMAND  ""	    /* autoboot command */
+#define CONFIG_BOOTCOMMAND	""	/* autoboot command */
 
 /* Size (bytes) of interrupt driven serial port buffer.
  * Set to 0 to use polling instead of interrupts.
@@ -61,48 +61,47 @@
  */
 #undef	CONFIG_SERIAL_SOFTWARE_FIFO
 
-#define CONFIG_BOOTARGS	    "console=ttyS0,57600"
+#define CONFIG_BOOTARGS		"console=ttyS0,57600"
 
-#define CONFIG_LOADS_ECHO   1	/* echo on for serial download	*/
-#define CFG_LOADS_BAUD_CHANGE	1   /* allow baudrate change	*/
+#define CONFIG_LOADS_ECHO	1	/* echo on for serial download	*/
+#define CFG_LOADS_BAUD_CHANGE	1	/* allow baudrate change	*/
 
-#define CONFIG_COMMANDS	       ( (CONFIG_CMD_DFL & \
-		(~CFG_CMD_RTC) & ~(CFG_CMD_I2C)) | \
-		CFG_CMD_IRQ | \
-		CFG_CMD_PCI | \
-		CFG_CMD_DHCP | \
-		CFG_CMD_ASKENV | \
-		CFG_CMD_ELF  | \
-		CFG_CMD_PING | \
-		CFG_CMD_MVENV  \
+#define CONFIG_COMMANDS	       (CONFIG_CMD_DFL	| \
+				CFG_CMD_ASKENV	| \
+				CFG_CMD_DHCP	| \
+				CFG_CMD_ELF	| \
+				CFG_CMD_IRQ	| \
+				CFG_CMD_MVENV	| \
+				CFG_CMD_PCI	| \
+				CFG_CMD_PING	\
 			       )
 
 /* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
 #include <cmd_confdefs.h>
 
-#undef CONFIG_WATCHDOG		/* watchdog disabled	    */
+#undef CONFIG_WATCHDOG			/* watchdog disabled	    */
 
-#define CONFIG_SYS_CLK_FREQ 30000000
+#define CONFIG_SYS_CLK_FREQ	30000000
 
-#define CONFIG_SPD_EEPROM      1       /* use SPD EEPROM for setup    */
+#define CONFIG_SPD_EEPROM	1	/* use SPD EEPROM for setup    */
 
 /*
  * Miscellaneous configurable options
  */
-#define CFG_LONGHELP		/* undef to save memory	    */
+#define CFG_LONGHELP			/* undef to save memory	    */
 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
-#define CFG_CBSIZE  1024	/* Console I/O Buffer Size  */
+#define CFG_CBSIZE	1024		/* Console I/O Buffer Size  */
 #else
-#define CFG_CBSIZE  256	    /* Console I/O Buffer Size	*/
+#define CFG_CBSIZE	256		/* Console I/O Buffer Size	*/
 #endif