[people/ms/u-boot.git] / common / fdt_support.c

/*
 * (C) Copyright 2007
 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <linux/ctype.h>
#include <linux/types.h>
#include <asm/global_data.h>
#include <fdt.h>
#include <libfdt.h>
#include <fdt_support.h>
#include <exports.h>

/*
 * Global data (for the gd->bd)
 */
DECLARE_GLOBAL_DATA_PTR;

/**
 * fdt_getprop_u32_default - Find a node and return it's property or a default
 *
 * @fdt: ptr to device tree
 * @path: path of node
 * @prop: property name
 * @dflt: default value if the property isn't found
 *
 * Convenience function to find a node and return it's property or a
 * default value if it doesn't exist.
 */
u32 fdt_getprop_u32_default(void *fdt, const char *path, const char *prop,
				const u32 dflt)
{
	const u32 *val;
	int off;

	off = fdt_path_offset(fdt, path);
	if (off < 0)
		return dflt;

	val = fdt_getprop(fdt, off, prop, NULL);
	if (val)
		return *val;
	else
		return dflt;
}

/**
 * fdt_find_and_setprop: Find a node and set it's property
 *
 * @fdt: ptr to device tree
 * @node: path of node
 * @prop: property name
 * @val: ptr to new value
 * @len: length of new property value
 * @create: flag to create the property if it doesn't exist
 *
 * Convenience function to directly set a property given the path to the node.
 */
int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
			 const void *val, int len, int create)
{
	int nodeoff = fdt_path_offset(fdt, node);

	if (nodeoff < 0)
		return nodeoff;

	if ((!create) && (fdt_get_property(fdt, nodeoff, prop, 0) == NULL))
		return 0; /* create flag not set; so exit quietly */

	return fdt_setprop(fdt, nodeoff, prop, val, len);
}

#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
static int fdt_fixup_stdout(void *fdt, int chosenoff)
{
	int err = 0;
#ifdef CONFIG_CONS_INDEX
	int node;
	char sername[9] = { 0 };
	const char *path;

	sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);

	err = node = fdt_path_offset(fdt, "/aliases");
	if (node >= 0) {
		int len;
		path = fdt_getprop(fdt, node, sername, &len);
		if (path) {
			char *p = malloc(len);
			err = -FDT_ERR_NOSPACE;
			if (p) {
				memcpy(p, path, len);
				err = fdt_setprop(fdt, chosenoff,
					"linux,stdout-path", p, len);
				free(p);
			}
		} else {
			err = len;
		}
	}
#endif
	if (err < 0)
		printf("WARNING: could not set linux,stdout-path %s.\n",
				fdt_strerror(err));

	return err;
}
#endif

int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force)
{
	int   nodeoffset;
	int   err, j, total;
	u32   tmp;
	const char *path;
	uint64_t addr, size;

	/* Find the "chosen" node.  */
	nodeoffset = fdt_path_offset (fdt, "/chosen");

	/* If there is no "chosen" node in the blob return */
	if (nodeoffset < 0) {
		printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset));
		return nodeoffset;
	}

	/* just return if initrd_start/end aren't valid */
	if ((initrd_start == 0) || (initrd_end == 0))
		return 0;

	total = fdt_num_mem_rsv(fdt);

	/*
	 * Look for an existing entry and update it.  If we don't find
	 * the entry, we will j be the next available slot.
	 */
	for (j = 0; j < total; j++) {
		err = fdt_get_mem_rsv(fdt, j, &addr, &size);
		if (addr == initrd_start) {
			fdt_del_mem_rsv(fdt, j);
			break;
		}
	}

	err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1);
	if (err < 0) {
		printf("fdt_initrd: %s\n", fdt_strerror(err));
		return err;
	}

	path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL);
	if ((path == NULL) || force) {
		tmp = __cpu_to_be32(initrd_start);
		err = fdt_setprop(fdt, nodeoffset,
			"linux,initrd-start", &tmp, sizeof(tmp));
		if (err < 0) {
			printf("WARNING: "
				"could not set linux,initrd-start %s.\n",
				fdt_strerror(err));
			return err;
		}
		tmp = __cpu_to_be32(initrd_end);
		err = fdt_setprop(fdt, nodeoffset,
			"linux,initrd-end", &tmp, sizeof(tmp));
		if (err < 0) {
			printf("WARNING: could not set linux,initrd-end %s.\n",
				fdt_strerror(err));

			return err;
		}
	}

	return 0;
}

int fdt_chosen(void *fdt, int force)
{
	int   nodeoffset;
	int   err;
	char  *str;		/* used to set string properties */
	const char *path;

	err = fdt_check_header(fdt);
	if (err < 0) {
		printf("fdt_chosen: %s\n", fdt_strerror(err));
		return err;
	}

	/*
	 * Find the "chosen" node.
	 */
	nodeoffset = fdt_path_offset (fdt, "/chosen");

	/*
	 * If there is no "chosen" node in the blob, create it.
	 */
	if (nodeoffset < 0) {
		/*
		 * Create a new node "/chosen" (offset 0 is root level)
		 */
		nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
		if (nodeoffset < 0) {
			printf("WARNING: could not create /chosen %s.\n",
				fdt_strerror(nodeoffset));
			return nodeoffset;
		}
	}

	/*
	 * Create /chosen properites that don't exist in the fdt.
	 * If the property exists, update it only if the "force" parameter
	 * is true.
	 */
	str = getenv("bootargs");
	if (str != NULL) {
		path = fdt_getprop(fdt, nodeoffset, "bootargs", NULL);
		if ((path == NULL) || force) {
			err = fdt_setprop(fdt, nodeoffset,
				"bootargs", str, strlen(str)+1);
			if (err < 0)
				printf("WARNING: could not set bootargs %s.\n",
					fdt_strerror(err));
		}
	}

#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
	path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
	if ((path == NULL) || force)
		err = fdt_fixup_stdout(fdt, nodeoffset);
#endif

#ifdef OF_STDOUT_PATH
	path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
	if ((path == NULL) || force) {
		err = fdt_setprop(fdt, nodeoffset,
			"linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
		if (err < 0)
			printf("WARNING: could not set linux,stdout-path %s.\n",
				fdt_strerror(err));
	}
#endif

	return err;
}

void do_fixup_by_path(void *fdt, const char *path, const char *prop,
		      const void *val, int len, int create)
{
#if defined(DEBUG)
	int i;
	debug("Updating property '%s/%s' = ", path, prop);
	for (i = 0; i < len; i++)
		debug(" %.2x", *(u8*)(val+i));
	debug("\n");
#endif
	int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create);
	if (rc)
		printf("Unable to update property %s:%s, err=%s\n",
			path, prop, fdt_strerror(rc));
}

void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
			  u32 val, int create)
{
	val = cpu_to_fdt32(val);
	do_fixup_by_path(fdt, path, prop, &val, sizeof(val), create);
}

void do_fixup_by_prop(void *fdt,
		      const char *pname, const void *pval, int plen,
		      const char *prop, const void *val, int len,
		      int create)
{
	int off;
#if defined(DEBUG)
	int i;
	debug("Updating property '%s' = ", prop);
	for (i = 0; i < len; i++)
		debug(" %.2x", *(u8*)(val+i));
	debug("\n");
#endif
	off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen);
	while (off != -FDT_ERR_NOTFOUND) {
		if (create || (fdt_get_property(fdt, off, prop, 0) != NULL))
			fdt_setprop(fdt, off, prop, val, len);
		off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen);
	}
}

void do_fixup_by_prop_u32(void *fdt,
			  const char *pname, const void *pval, int plen,
			  const char *prop, u32 val, int create)
{
	val = cpu_to_fdt32(val);
	do_fixup_by_prop(fdt, pname, pval, plen, prop, &val, 4, create);
}

void do_fixup_by_compat(void *fdt, const char *compat,
			const char *prop, const void *val, int len, int create)
{
	int off = -1;
#if defined(DEBUG)
	int i;
	debug("Updating property '%s' = ", prop);
	for (i = 0; i < len; i++)
		debug(" %.2x", *(u8*)(val+i));
	debug("\n");
#endif
	off = fdt_node_offset_by_compatible(fdt, -1, compat);
	while (off != -FDT_ERR_NOTFOUND) {
		if (create || (fdt_get_property(fdt, off, prop, 0) != NULL))
			fdt_setprop(fdt, off, prop, val, len);
		off = fdt_node_offset_by_compatible(fdt, off, compat);
	}
}

void do_fixup_by_compat_u32(void *fdt, const char *compat,
			    const char *prop, u32 val, int create)
{
	val = cpu_to_fdt32(val);
	do_fixup_by_compat(fdt, compat, prop, &val, 4, create);
}

int fdt_fixup_memory(void *blob, u64 start, u64 size)
{
	int err, nodeoffset, len = 0;
	u8 tmp[16];
	const u32 *addrcell, *sizecell;

	err = fdt_check_header(blob);
	if (err < 0) {
		printf("%s: %s\n", __FUNCTION__, fdt_strerror(err));
		return err;
	}

	/* update, or add and update /memory node */
	nodeoffset = fdt_path_offset(blob, "/memory");
	if (nodeoffset < 0) {
		nodeoffset = fdt_add_subnode(blob, 0, "memory");
		if (nodeoffset < 0)
			printf("WARNING: could not create /memory: %s.\n",
					fdt_strerror(nodeoffset));
		return nodeoffset;
	}
	err = fdt_setprop(blob, nodeoffset, "device_type", "memory",
			sizeof("memory"));
	if (err < 0) {
		printf("WARNING: could not set %s %s.\n", "device_type",
				fdt_strerror(err));
		return err;
	}

	addrcell = fdt_getprop(blob, 0, "#address-cells", NULL);
	/* use shifts and mask to ensure endianness */
	if ((addrcell) && (*addrcell == 2)) {
		tmp[0] = (start >> 56) & 0xff;
		tmp[1] = (start >> 48) & 0xff;
		tmp[2] = (start >> 40) & 0xff;
		tmp[3] = (start >> 32) & 0xff;
		tmp[4] = (start >> 24) & 0xff;
		tmp[5] = (start >> 16) & 0xff;
		tmp[6] = (start >>  8) & 0xff;
		tmp[7] = (start      ) & 0xff;
		len = 8;
	} else {
		tmp[0] = (start >> 24) & 0xff;
		tmp[1] = (start >> 16) & 0xff;
		tmp[2] = (start >>  8) & 0xff;
		tmp[3] = (start      ) & 0xff;
		len = 4;
	}

	sizecell = fdt_getprop(blob, 0, "#size-cells", NULL);
	/* use shifts and mask to ensure endianness */
	if ((sizecell) && (*sizecell == 2)) {
		tmp[0+len] = (size >> 56) & 0xff;
		tmp[1+len] = (size >> 48) & 0xff;
		tmp[2+len] = (size >> 40) & 0xff;
		tmp[3+len] = (size >> 32) & 0xff;
		tmp[4+len] = (size >> 24) & 0xff;
		tmp[5+len] = (size >> 16) & 0xff;
		tmp[6+len] = (size >>  8) & 0xff;
		tmp[7+len] = (size      ) & 0xff;
		len += 8;
	} else {
		tmp[0+len] = (size >> 24) & 0xff;
		tmp[1+len] = (size >> 16) & 0xff;
		tmp[2+len] = (size >>  8) & 0xff;
		tmp[3+len] = (size      ) & 0xff;
		len += 4;
	}

	err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
	if (err < 0) {
		printf("WARNING: could not set %s %s.\n",
				"reg", fdt_strerror(err));
		return err;
	}
	return 0;
}

void fdt_fixup_ethernet(void *fdt)
{
	int node, i, j;
	char enet[16], *tmp, *end;
	char mac[16] = "ethaddr";
	const char *path;
	unsigned char mac_addr[6];

	node = fdt_path_offset(fdt, "/aliases");
	if (node < 0)
		return;

	i = 0;
	while ((tmp = getenv(mac)) != NULL) {
		sprintf(enet, "ethernet%d", i);
		path = fdt_getprop(fdt, node, enet, NULL);
		if (!path) {
			debug("No alias for %s\n", enet);
			sprintf(mac, "eth%daddr", ++i);
			continue;
		}

		for (j = 0; j < 6; j++) {
			mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
			if (tmp)
				tmp = (*end) ? end+1 : end;
		}

		do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0);
		do_fixup_by_path(fdt, path, "local-mac-address",
				&mac_addr, 6, 1);

		sprintf(mac, "eth%daddr", ++i);
	}
}

#ifdef CONFIG_HAS_FSL_DR_USB
void fdt_fixup_dr_usb(void *blob, bd_t *bd)
{
	char *mode;
	char *type;
	const char *compat = "fsl-usb2-dr";
	const char *prop_mode = "dr_mode";
	const char *prop_type = "phy_type";
	int node_offset;
	int err;

	mode = getenv("usb_dr_mode");
	type = getenv("usb_phy_type");
	if (!mode && !type)
		return;

	node_offset = fdt_node_offset_by_compatible(blob, 0, compat);
	if (node_offset < 0) {
		printf("WARNING: could not find compatible node %s: %s.\n",
			compat, fdt_strerror(node_offset));
		return;
	}

	if (mode) {
		err = fdt_setprop(blob, node_offset, prop_mode, mode,
				  strlen(mode) + 1);
		if (err < 0)
			printf("WARNING: could not set %s for %s: %s.\n",
			       prop_mode, compat, fdt_strerror(err));
	}

	if (type) {
		err = fdt_setprop(blob, node_offset, prop_type, type,
				  strlen(type) + 1);
		if (err < 0)
			printf("WARNING: could not set %s for %s: %s.\n",
			       prop_type, compat, fdt_strerror(err));
	}
}
#endif /* CONFIG_HAS_FSL_DR_USB */

#if defined(CONFIG_MPC83XX) || defined(CONFIG_MPC85xx)
/*
 * update crypto node properties to a specified revision of the SEC
 * called with sec_rev == 0 if not on an mpc8xxxE processor
 */
void fdt_fixup_crypto_node(void *blob, int sec_rev)
{
	const struct sec_rev_prop {
		u32 sec_rev;
		u32 num_channels;
		u32 channel_fifo_len;
		u32 exec_units_mask;
		u32 descriptor_types_mask;
	} sec_rev_prop_list [] = {
		{ 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
		{ 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
		{ 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
		{ 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
		{ 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
		{ 0x0303, 4, 24, 0x97c, 0x03ab0abf }, /* SEC 3.3 */
	};
	char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
			    sizeof("fsl,secX.Y")];
	int crypto_node, sec_idx, err;
	char *p;
	u32 val;

	/* locate crypto node based on lowest common compatible */
	crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
	if (crypto_node == -FDT_ERR_NOTFOUND)
		return;

	/* delete it if not on an E-processor */
	if (crypto_node > 0 && !sec_rev) {
		fdt_del_node(blob, crypto_node);
		return;
	}

	/* else we got called for possible uprev */
	for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
		if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
			break;

	if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
		puts("warning: unknown SEC revision number\n");
		return;
	}

	val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
	err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
	if (err < 0)
		printf("WARNING: could not set crypto property: %s\n",
		       fdt_strerror(err));

	val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
	err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
	if (err < 0)
		printf("WARNING: could not set crypto property: %s\n",
		       fdt_strerror(err));

	val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
	err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
	if (err < 0)
		printf("WARNING: could not set crypto property: %s\n",
		       fdt_strerror(err));

	val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
	err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
	if (err < 0)
		printf("WARNING: could not set crypto property: %s\n",
		       fdt_strerror(err));

	val = 0;
	while (sec_idx >= 0) {
		p = compat_strlist + val;
		val += sprintf(p, "fsl,sec%d.%d",
			(sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
			sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
		sec_idx--;
	}
	err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
	if (err < 0)
		printf("WARNING: could not set crypto property: %s\n",
		       fdt_strerror(err));
}
#endif /* defined(CONFIG_MPC83XX) || defined(CONFIG_MPC85xx) */

/* Resize the fdt to its actual size + a bit of padding */
int fdt_resize(void *blob)
{
	int i;
	uint64_t addr, size;
	int total, ret;
	uint actualsize;

	if (!blob)
		return 0;

	total = fdt_num_mem_rsv(blob);
	for (i = 0; i < total; i++) {
		fdt_get_mem_rsv(blob, i, &addr, &size);
		if (addr == (uint64_t)(u32)blob) {
			fdt_del_mem_rsv(blob, i);
			break;
		}
	}

	/* Calculate the actual size of the fdt */
	actualsize = fdt_off_dt_strings(blob) +
		fdt_size_dt_strings(blob);

	/* Make it so the fdt ends on a page boundary */
	actualsize = ALIGN(actualsize, 0x1000);
	actualsize = actualsize - ((uint)blob & 0xfff);

	/* Change the fdt header to reflect the correct size */
	fdt_set_totalsize(blob, actualsize);

	/* Add the new reservation */
	ret = fdt_add_mem_rsv(blob, (uint)blob, actualsize);
	if (ret < 0)
		return ret;

	return actualsize;
}
Commit	Line	Data
64dbbd40 GVB	1	/*
	2	* (C) Copyright 2007
	3	* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	#include <common.h>
	25	#include <linux/ctype.h>
	26	#include <linux/types.h>
64dbbd40 GVB	27	#include <asm/global_data.h>
	28	#include <fdt.h>
	29	#include <libfdt.h>
	30	#include <fdt_support.h>
151c8b09	31	#include <exports.h>
64dbbd40 GVB	32
	33	/*
	34	* Global data (for the gd->bd)
	35	*/
	36	DECLARE_GLOBAL_DATA_PTR;
	37
3bed2aaf KG	38	/**
	39	* fdt_getprop_u32_default - Find a node and return it's property or a default
	40	*
	41	* @fdt: ptr to device tree
	42	* @path: path of node
	43	* @prop: property name
	44	* @dflt: default value if the property isn't found
	45	*
	46	* Convenience function to find a node and return it's property or a
	47	* default value if it doesn't exist.
	48	*/
	49	u32 fdt_getprop_u32_default(void fdt, const char path, const char *prop,
	50	const u32 dflt)
	51	{
	52	const u32 *val;
	53	int off;
	54
	55	off = fdt_path_offset(fdt, path);
	56	if (off < 0)
	57	return dflt;
	58
	59	val = fdt_getprop(fdt, off, prop, NULL);
	60	if (val)
	61	return *val;
	62	else
	63	return dflt;
	64	}
64dbbd40	65
a3c2933e KG	66	/**
	67	* fdt_find_and_setprop: Find a node and set it's property
	68	*
	69	* @fdt: ptr to device tree
	70	* @node: path of node
	71	* @prop: property name
	72	* @val: ptr to new value
	73	* @len: length of new property value
	74	* @create: flag to create the property if it doesn't exist
	75	*
	76	* Convenience function to directly set a property given the path to the node.
	77	*/
	78	int fdt_find_and_setprop(void fdt, const char node, const char *prop,
	79	const void *val, int len, int create)
	80	{
8d04f02f	81	int nodeoff = fdt_path_offset(fdt, node);
a3c2933e KG	82
	83	if (nodeoff < 0)
	84	return nodeoff;
	85
	86	if ((!create) && (fdt_get_property(fdt, nodeoff, prop, 0) == NULL))
	87	return 0; /* create flag not set; so exit quietly */
	88
	89	return fdt_setprop(fdt, nodeoff, prop, val, len);
	90	}
	91
151c8b09	92	#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
40777812	93	static int fdt_fixup_stdout(void *fdt, int chosenoff)
151c8b09 KG	94	{
	95	int err = 0;
	96	#ifdef CONFIG_CONS_INDEX
	97	int node;
	98	char sername[9] = { 0 };
	99	const char *path;
	100
	101	sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
	102
	103	err = node = fdt_path_offset(fdt, "/aliases");
	104	if (node >= 0) {
	105	int len;
	106	path = fdt_getprop(fdt, node, sername, &len);
	107	if (path) {
	108	char *p = malloc(len);
	109	err = -FDT_ERR_NOSPACE;
	110	if (p) {
	111	memcpy(p, path, len);
40777812	112	err = fdt_setprop(fdt, chosenoff,
151c8b09 KG	113	"linux,stdout-path", p, len);
	114	free(p);
	115	}
	116	} else {
	117	err = len;
	118	}
	119	}
	120	#endif
	121	if (err < 0)
	122	printf("WARNING: could not set linux,stdout-path %s.\n",
	123	fdt_strerror(err));
	124
	125	return err;
	126	}
	127	#endif
	128
2a1a2cb6	129	int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force)
64dbbd40	130	{
64dbbd40	131	int nodeoffset;
2a1a2cb6 KG	132	int err, j, total;
2a1a2cb6 KG	133	u32 tmp;
b60af3d4	134	const char *path;
2a1a2cb6	135	uint64_t addr, size;
64dbbd40	136
2a1a2cb6 KG	137	/* Find the "chosen" node. */
	138	nodeoffset = fdt_path_offset (fdt, "/chosen");
	139
	140	/* If there is no "chosen" node in the blob return */
	141	if (nodeoffset < 0) {
	142	printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset));
	143	return nodeoffset;
64dbbd40 GVB	144	}
64dbbd40 GVB	145
2a1a2cb6 KG	146	/* just return if initrd_start/end aren't valid */
	147	if ((initrd_start == 0) \|\| (initrd_end == 0))
	148	return 0;
c28abb9c	149
2a1a2cb6 KG	150	total = fdt_num_mem_rsv(fdt);
	151
	152	/*
	153	* Look for an existing entry and update it. If we don't find
	154	* the entry, we will j be the next available slot.
	155	*/
	156	for (j = 0; j < total; j++) {
	157	err = fdt_get_mem_rsv(fdt, j, &addr, &size);
	158	if (addr == initrd_start) {
	159	fdt_del_mem_rsv(fdt, j);
	160	break;
c28abb9c	161	}
2a1a2cb6	162	}
8d04f02f	163
2a1a2cb6 KG	164	err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1);
	165	if (err < 0) {
	166	printf("fdt_initrd: %s\n", fdt_strerror(err));
	167	return err;
	168	}
	169
	170	path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL);
	171	if ((path == NULL) \|\| force) {
	172	tmp = __cpu_to_be32(initrd_start);
	173	err = fdt_setprop(fdt, nodeoffset,
	174	"linux,initrd-start", &tmp, sizeof(tmp));
	175	if (err < 0) {
	176	printf("WARNING: "
	177	"could not set linux,initrd-start %s.\n",
	178	fdt_strerror(err));
	179	return err;
	180	}
	181	tmp = __cpu_to_be32(initrd_end);
	182	err = fdt_setprop(fdt, nodeoffset,
	183	"linux,initrd-end", &tmp, sizeof(tmp));
64dbbd40	184	if (err < 0) {
2a1a2cb6 KG	185	printf("WARNING: could not set linux,initrd-end %s.\n",
	186	fdt_strerror(err));
	187
64dbbd40 GVB	188	return err;
	189	}
	190	}
	191
2a1a2cb6 KG	192	return 0;
	193	}
	194
56844a22	195	int fdt_chosen(void *fdt, int force)
2a1a2cb6 KG	196	{
	197	int nodeoffset;
	198	int err;
	199	char str; / used to set string properties */
	200	const char *path;
	201
	202	err = fdt_check_header(fdt);
	203	if (err < 0) {
	204	printf("fdt_chosen: %s\n", fdt_strerror(err));
	205	return err;
	206	}
	207
64dbbd40 GVB	208	/*
	209	* Find the "chosen" node.
	210	*/
8d04f02f	211	nodeoffset = fdt_path_offset (fdt, "/chosen");
64dbbd40 GVB	212
64dbbd40 GVB	213	/*
b60af3d4	214	* If there is no "chosen" node in the blob, create it.
64dbbd40 GVB	215	*/
	216	if (nodeoffset < 0) {
	217	/*
	218	* Create a new node "/chosen" (offset 0 is root level)
	219	*/
	220	nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
	221	if (nodeoffset < 0) {
5fe6be62	222	printf("WARNING: could not create /chosen %s.\n",
35ec398f	223	fdt_strerror(nodeoffset));
64dbbd40 GVB	224	return nodeoffset;
	225	}
	226	}
	227
	228	/*
b60af3d4 GVB	229	* Create /chosen properites that don't exist in the fdt.
	230	* If the property exists, update it only if the "force" parameter
	231	* is true.
64dbbd40 GVB	232	*/
	233	str = getenv("bootargs");
	234	if (str != NULL) {
b60af3d4 GVB	235	path = fdt_getprop(fdt, nodeoffset, "bootargs", NULL);
	236	if ((path == NULL) \|\| force) {
	237	err = fdt_setprop(fdt, nodeoffset,
	238	"bootargs", str, strlen(str)+1);
	239	if (err < 0)
	240	printf("WARNING: could not set bootargs %s.\n",
	241	fdt_strerror(err));
	242	}
64dbbd40	243	}
2a1a2cb6	244
151c8b09	245	#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
b60af3d4 GVB	246	path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
	247	if ((path == NULL) \|\| force)
	248	err = fdt_fixup_stdout(fdt, nodeoffset);
151c8b09 KG	249	#endif
151c8b09 KG	250
64dbbd40	251	#ifdef OF_STDOUT_PATH
b60af3d4 GVB	252	path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
	253	if ((path == NULL) \|\| force) {
	254	err = fdt_setprop(fdt, nodeoffset,
	255	"linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
	256	if (err < 0)
	257	printf("WARNING: could not set linux,stdout-path %s.\n",
	258	fdt_strerror(err));
	259	}
64dbbd40 GVB	260	#endif
64dbbd40 GVB	261
64dbbd40 GVB	262	return err;
	263	}
	264
e93becf8 KG	265	void do_fixup_by_path(void fdt, const char path, const char *prop,
	266	const void *val, int len, int create)
	267	{
	268	#if defined(DEBUG)
	269	int i;
d9ad115b	270	debug("Updating property '%s/%s' = ", path, prop);
e93becf8 KG	271	for (i = 0; i < len; i++)
	272	debug(" %.2x", (u8)(val+i));
	273	debug("\n");
	274	#endif
	275	int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create);
	276	if (rc)
	277	printf("Unable to update property %s:%s, err=%s\n",
	278	path, prop, fdt_strerror(rc));
	279	}
	280
	281	void do_fixup_by_path_u32(void fdt, const char path, const char *prop,
	282	u32 val, int create)
	283	{
	284	val = cpu_to_fdt32(val);
	285	do_fixup_by_path(fdt, path, prop, &val, sizeof(val), create);
	286	}
	287
9eb77cea KG	288	void do_fixup_by_prop(void *fdt,
	289	const char pname, const void pval, int plen,
	290	const char prop, const void val, int len,
	291	int create)
	292	{
	293	int off;
	294	#if defined(DEBUG)
	295	int i;
d9ad115b	296	debug("Updating property '%s' = ", prop);
9eb77cea KG	297	for (i = 0; i < len; i++)
	298	debug(" %.2x", (u8)(val+i));
	299	debug("\n");
	300	#endif
	301	off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen);
	302	while (off != -FDT_ERR_NOTFOUND) {
	303	if (create \|\| (fdt_get_property(fdt, off, prop, 0) != NULL))
	304	fdt_setprop(fdt, off, prop, val, len);
	305	off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen);
	306	}
	307	}
	308
	309	void do_fixup_by_prop_u32(void *fdt,
	310	const char pname, const void pval, int plen,
	311	const char *prop, u32 val, int create)
	312	{
	313	val = cpu_to_fdt32(val);
	314	do_fixup_by_prop(fdt, pname, pval, plen, prop, &val, 4, create);
	315	}
	316
	317	void do_fixup_by_compat(void fdt, const char compat,
	318	const char prop, const void val, int len, int create)
	319	{
	320	int off = -1;
	321	#if defined(DEBUG)
	322	int i;
d9ad115b	323	debug("Updating property '%s' = ", prop);
9eb77cea KG	324	for (i = 0; i < len; i++)
	325	debug(" %.2x", (u8)(val+i));
	326	debug("\n");
	327	#endif
	328	off = fdt_node_offset_by_compatible(fdt, -1, compat);
	329	while (off != -FDT_ERR_NOTFOUND) {
	330	if (create \|\| (fdt_get_property(fdt, off, prop, 0) != NULL))
	331	fdt_setprop(fdt, off, prop, val, len);
	332	off = fdt_node_offset_by_compatible(fdt, off, compat);
	333	}
	334	}
	335
	336	void do_fixup_by_compat_u32(void fdt, const char compat,
	337	const char *prop, u32 val, int create)
	338	{
	339	val = cpu_to_fdt32(val);
	340	do_fixup_by_compat(fdt, compat, prop, &val, 4, create);
	341	}
	342
3c927281 KG	343	int fdt_fixup_memory(void *blob, u64 start, u64 size)
	344	{
	345	int err, nodeoffset, len = 0;
	346	u8 tmp[16];
	347	const u32 addrcell, sizecell;
	348
	349	err = fdt_check_header(blob);
	350	if (err < 0) {
	351	printf("%s: %s\n", __FUNCTION__, fdt_strerror(err));
	352	return err;
	353	}
	354
	355	/* update, or add and update /memory node */
	356	nodeoffset = fdt_path_offset(blob, "/memory");
	357	if (nodeoffset < 0) {
	358	nodeoffset = fdt_add_subnode(blob, 0, "memory");
	359	if (nodeoffset < 0)
	360	printf("WARNING: could not create /memory: %s.\n",
	361	fdt_strerror(nodeoffset));
	362	return nodeoffset;
	363	}
	364	err = fdt_setprop(blob, nodeoffset, "device_type", "memory",
	365	sizeof("memory"));
	366	if (err < 0) {
	367	printf("WARNING: could not set %s %s.\n", "device_type",
	368	fdt_strerror(err));
	369	return err;
	370	}
	371
	372	addrcell = fdt_getprop(blob, 0, "#address-cells", NULL);
	373	/* use shifts and mask to ensure endianness */
	374	if ((addrcell) && (*addrcell == 2)) {
	375	tmp[0] = (start >> 56) & 0xff;
	376	tmp[1] = (start >> 48) & 0xff;
	377	tmp[2] = (start >> 40) & 0xff;
	378	tmp[3] = (start >> 32) & 0xff;
	379	tmp[4] = (start >> 24) & 0xff;
	380	tmp[5] = (start >> 16) & 0xff;
	381	tmp[6] = (start >> 8) & 0xff;
	382	tmp[7] = (start ) & 0xff;
	383	len = 8;
	384	} else {
	385	tmp[0] = (start >> 24) & 0xff;
	386	tmp[1] = (start >> 16) & 0xff;
	387	tmp[2] = (start >> 8) & 0xff;
	388	tmp[3] = (start ) & 0xff;
	389	len = 4;
	390	}
	391
	392	sizecell = fdt_getprop(blob, 0, "#size-cells", NULL);
	393	/* use shifts and mask to ensure endianness */
	394	if ((sizecell) && (*sizecell == 2)) {
	395	tmp[0+len] = (size >> 56) & 0xff;
	396	tmp[1+len] = (size >> 48) & 0xff;
	397	tmp[2+len] = (size >> 40) & 0xff;
	398	tmp[3+len] = (size >> 32) & 0xff;
	399	tmp[4+len] = (size >> 24) & 0xff;
	400	tmp[5+len] = (size >> 16) & 0xff;
	401	tmp[6+len] = (size >> 8) & 0xff;
	402	tmp[7+len] = (size ) & 0xff;
	403	len += 8;
	404	} else {
	405	tmp[0+len] = (size >> 24) & 0xff;
	406	tmp[1+len] = (size >> 16) & 0xff;
407	tmp[2+len] = (size >> 8) & 0xff;
408	tmp[3+len] = (size ) & 0xff;
409	len += 4;
410	}
411
412	err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
413	if (err < 0) {
414	printf("WARNING: could not set %s %s.\n",
415	"reg", fdt_strerror(err));
416	return err;
417	}
418	return 0;
419	}
420
ba37aa03	421	void fdt_fixup_ethernet(void *fdt)
ab544633	422	{
ba37aa03 KG	423	int node, i, j;
	424	char enet[16], tmp, end;
	425	char mac[16] = "ethaddr";
ab544633	426	const char *path;
ba37aa03	427	unsigned char mac_addr[6];
ab544633 KG	428
ab544633 KG	429	node = fdt_path_offset(fdt, "/aliases");
ba37aa03 KG	430	if (node < 0)
	431	return;
	432
	433	i = 0;
	434	while ((tmp = getenv(mac)) != NULL) {
	435	sprintf(enet, "ethernet%d", i);
	436	path = fdt_getprop(fdt, node, enet, NULL);
	437	if (!path) {
	438	debug("No alias for %s\n", enet);
	439	sprintf(mac, "eth%daddr", ++i);
	440	continue;
ab544633	441	}
ba37aa03 KG	442
	443	for (j = 0; j < 6; j++) {
	444	mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
	445	if (tmp)
	446	tmp = (*end) ? end+1 : end;
ab544633	447	}
ba37aa03 KG	448
	449	do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0);
	450	do_fixup_by_path(fdt, path, "local-mac-address",
	451	&mac_addr, 6, 1);
	452
	453	sprintf(mac, "eth%daddr", ++i);
ab544633 KG	454	}
ab544633 KG	455	}
18e69a35 AV	456
	457	#ifdef CONFIG_HAS_FSL_DR_USB
	458	void fdt_fixup_dr_usb(void blob, bd_t bd)
	459	{
	460	char *mode;
015b27b9	461	char *type;
18e69a35	462	const char *compat = "fsl-usb2-dr";
015b27b9 AV	463	const char *prop_mode = "dr_mode";
015b27b9 AV	464	const char *prop_type = "phy_type";
18e69a35 AV	465	int node_offset;
	466	int err;
	467
	468	mode = getenv("usb_dr_mode");
015b27b9 AV	469	type = getenv("usb_phy_type");
015b27b9 AV	470	if (!mode && !type)
18e69a35 AV	471	return;
	472
	473	node_offset = fdt_node_offset_by_compatible(blob, 0, compat);
015b27b9	474	if (node_offset < 0) {
18e69a35 AV	475	printf("WARNING: could not find compatible node %s: %s.\n",
18e69a35 AV	476	compat, fdt_strerror(node_offset));
015b27b9 AV	477	return;
015b27b9 AV	478	}
18e69a35	479
015b27b9 AV	480	if (mode) {
	481	err = fdt_setprop(blob, node_offset, prop_mode, mode,
	482	strlen(mode) + 1);
	483	if (err < 0)
	484	printf("WARNING: could not set %s for %s: %s.\n",
	485	prop_mode, compat, fdt_strerror(err));
	486	}
	487
	488	if (type) {
	489	err = fdt_setprop(blob, node_offset, prop_type, type,
	490	strlen(type) + 1);
	491	if (err < 0)
	492	printf("WARNING: could not set %s for %s: %s.\n",
	493	prop_type, compat, fdt_strerror(err));
	494	}
18e69a35 AV	495	}
18e69a35 AV	496	#endif /* CONFIG_HAS_FSL_DR_USB */
6b70ffb9 KP	497
	498	#if defined(CONFIG_MPC83XX) \|\| defined(CONFIG_MPC85xx)
	499	/*
	500	* update crypto node properties to a specified revision of the SEC
	501	* called with sec_rev == 0 if not on an mpc8xxxE processor
	502	*/
	503	void fdt_fixup_crypto_node(void *blob, int sec_rev)
	504	{
	505	const struct sec_rev_prop {
	506	u32 sec_rev;
	507	u32 num_channels;
	508	u32 channel_fifo_len;
	509	u32 exec_units_mask;
	510	u32 descriptor_types_mask;
	511	} sec_rev_prop_list [] = {
	512	{ 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
	513	{ 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
	514	{ 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
	515	{ 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
	516	{ 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
	517	{ 0x0303, 4, 24, 0x97c, 0x03ab0abf }, /* SEC 3.3 */
	518	};
	519	char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
	520	sizeof("fsl,secX.Y")];
	521	int crypto_node, sec_idx, err;
	522	char *p;
	523	u32 val;
	524
	525	/* locate crypto node based on lowest common compatible */
	526	crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
	527	if (crypto_node == -FDT_ERR_NOTFOUND)
	528	return;
	529
	530	/* delete it if not on an E-processor */
	531	if (crypto_node > 0 && !sec_rev) {
	532	fdt_del_node(blob, crypto_node);
	533	return;
	534	}
	535
	536	/* else we got called for possible uprev */
	537	for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
	538	if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
	539	break;
	540
	541	if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
	542	puts("warning: unknown SEC revision number\n");
	543	return;
	544	}
	545
	546	val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
	547	err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
	548	if (err < 0)
	549	printf("WARNING: could not set crypto property: %s\n",
	550	fdt_strerror(err));
	551
	552	val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
	553	err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
	554	if (err < 0)
	555	printf("WARNING: could not set crypto property: %s\n",
	556	fdt_strerror(err));
	557
	558	val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
	559	err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
	560	if (err < 0)
561	printf("WARNING: could not set crypto property: %s\n",
562	fdt_strerror(err));
563
564	val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
565	err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
566	if (err < 0)
567	printf("WARNING: could not set crypto property: %s\n",
568	fdt_strerror(err));
569
570	val = 0;
571	while (sec_idx >= 0) {
572	p = compat_strlist + val;
573	val += sprintf(p, "fsl,sec%d.%d",
574	(sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
575	sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
576	sec_idx--;
577	}
578	err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
579	if (err < 0)
580	printf("WARNING: could not set crypto property: %s\n",
581	fdt_strerror(err));
582	}
583	#endif /* defined(CONFIG_MPC83XX) \|\| defined(CONFIG_MPC85xx) */
3082d234 KG	584
	585	/* Resize the fdt to its actual size + a bit of padding */
	586	int fdt_resize(void *blob)
	587	{
	588	int i;
	589	uint64_t addr, size;
	590	int total, ret;
	591	uint actualsize;
	592
	593	if (!blob)
	594	return 0;
	595
	596	total = fdt_num_mem_rsv(blob);
	597	for (i = 0; i < total; i++) {
	598	fdt_get_mem_rsv(blob, i, &addr, &size);
	599	if (addr == (uint64_t)(u32)blob) {
	600	fdt_del_mem_rsv(blob, i);
	601	break;
	602	}
	603	}
	604
	605	/* Calculate the actual size of the fdt */
	606	actualsize = fdt_off_dt_strings(blob) +
	607	fdt_size_dt_strings(blob);
	608
	609	/* Make it so the fdt ends on a page boundary */
	610	actualsize = ALIGN(actualsize, 0x1000);
	611	actualsize = actualsize - ((uint)blob & 0xfff);
	612
	613	/* Change the fdt header to reflect the correct size */
	614	fdt_set_totalsize(blob, actualsize);
	615
	616	/* Add the new reservation */
	617	ret = fdt_add_mem_rsv(blob, (uint)blob, actualsize);
	618	if (ret < 0)
	619	return ret;
	620
	621	return actualsize;
	622	}