[u-boot.git] / lib / fdtdec.c

/*
 * Copyright (c) 2011 The Chromium OS Authors.
 * SPDX-License-Identifier:	GPL-2.0+
 */

#ifndef USE_HOSTCC
#include <common.h>
#include <serial.h>
#include <libfdt.h>
#include <fdtdec.h>

#include <asm/gpio.h>

DECLARE_GLOBAL_DATA_PTR;

/*
 * Here are the type we know about. One day we might allow drivers to
 * register. For now we just put them here. The COMPAT macro allows us to
 * turn this into a sparse list later, and keeps the ID with the name.
 */
#define COMPAT(id, name) name
static const char * const compat_names[COMPAT_COUNT] = {
	COMPAT(UNKNOWN, "<none>"),
	COMPAT(NVIDIA_TEGRA20_USB, "nvidia,tegra20-ehci"),
	COMPAT(NVIDIA_TEGRA30_USB, "nvidia,tegra30-ehci"),
	COMPAT(NVIDIA_TEGRA114_USB, "nvidia,tegra114-ehci"),
	COMPAT(NVIDIA_TEGRA114_I2C, "nvidia,tegra114-i2c"),
	COMPAT(NVIDIA_TEGRA20_I2C, "nvidia,tegra20-i2c"),
	COMPAT(NVIDIA_TEGRA20_DVC, "nvidia,tegra20-i2c-dvc"),
	COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
	COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
	COMPAT(NVIDIA_TEGRA20_KBC, "nvidia,tegra20-kbc"),
	COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
	COMPAT(NVIDIA_TEGRA20_PWM, "nvidia,tegra20-pwm"),
	COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"),
	COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"),
	COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"),
	COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"),
	COMPAT(NVIDIA_TEGRA20_SFLASH, "nvidia,tegra20-sflash"),
	COMPAT(NVIDIA_TEGRA20_SLINK, "nvidia,tegra20-slink"),
	COMPAT(NVIDIA_TEGRA114_SPI, "nvidia,tegra114-spi"),
	COMPAT(SMSC_LAN9215, "smsc,lan9215"),
	COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
	COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"),
	COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"),
	COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"),
	COMPAT(SAMSUNG_EXYNOS_SPI, "samsung,exynos-spi"),
	COMPAT(GOOGLE_CROS_EC, "google,cros-ec"),
	COMPAT(GOOGLE_CROS_EC_KEYB, "google,cros-ec-keyb"),
	COMPAT(SAMSUNG_EXYNOS_EHCI, "samsung,exynos-ehci"),
	COMPAT(SAMSUNG_EXYNOS5_XHCI, "samsung,exynos5250-xhci"),
	COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
	COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
	COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
	COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"),
	COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"),
	COMPAT(SAMSUNG_EXYNOS5_DWMMC, "samsung,exynos5250-dwmmc"),
	COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"),
	COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686_pmic"),
	COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
	COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"),
	COMPAT(INFINEON_SLB9635_TPM, "infineon,slb9635-tpm"),
	COMPAT(INFINEON_SLB9645_TPM, "infineon,slb9645-tpm"),
	COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"),
	COMPAT(SANDBOX_HOST_EMULATION, "sandbox,host-emulation"),
	COMPAT(SANDBOX_LCD_SDL, "sandbox,lcd-sdl"),
};

const char *fdtdec_get_compatible(enum fdt_compat_id id)
{
	/* We allow reading of the 'unknown' ID for testing purposes */
	assert(id >= 0 && id < COMPAT_COUNT);
	return compat_names[id];
}

fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
		const char *prop_name, fdt_size_t *sizep)
{
	const fdt_addr_t *cell;
	int len;

	debug("%s: %s: ", __func__, prop_name);
	cell = fdt_getprop(blob, node, prop_name, &len);
	if (cell && ((!sizep && len == sizeof(fdt_addr_t)) ||
		     len == sizeof(fdt_addr_t) * 2)) {
		fdt_addr_t addr = fdt_addr_to_cpu(*cell);
		if (sizep) {
			const fdt_size_t *size;

			size = (fdt_size_t *)((char *)cell +
					sizeof(fdt_addr_t));
			*sizep = fdt_size_to_cpu(*size);
			debug("addr=%08lx, size=%08x\n",
			      (ulong)addr, *sizep);
		} else {
			debug("%08lx\n", (ulong)addr);
		}
		return addr;
	}
	debug("(not found)\n");
	return FDT_ADDR_T_NONE;
}

fdt_addr_t fdtdec_get_addr(const void *blob, int node,
		const char *prop_name)
{
	return fdtdec_get_addr_size(blob, node, prop_name, NULL);
}

s32 fdtdec_get_int(const void *blob, int node, const char *prop_name,
		s32 default_val)
{
	const s32 *cell;
	int len;

	debug("%s: %s: ", __func__, prop_name);
	cell = fdt_getprop(blob, node, prop_name, &len);
	if (cell && len >= sizeof(s32)) {
		s32 val = fdt32_to_cpu(cell[0]);

		debug("%#x (%d)\n", val, val);
		return val;
	}
	debug("(not found)\n");
	return default_val;
}

uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
		uint64_t default_val)
{
	const uint64_t *cell64;
	int length;

	cell64 = fdt_getprop(blob, node, prop_name, &length);
	if (!cell64 || length < sizeof(*cell64))
		return default_val;

	return fdt64_to_cpu(*cell64);
}

int fdtdec_get_is_enabled(const void *blob, int node)
{
	const char *cell;

	/*
	 * It should say "okay", so only allow that. Some fdts use "ok" but
	 * this is a bug. Please fix your device tree source file. See here
	 * for discussion:
	 *
	 * http://www.mail-archive.com/[email protected]/msg71598.html
	 */
	cell = fdt_getprop(blob, node, "status", NULL);
	if (cell)
		return 0 == strcmp(cell, "okay");
	return 1;
}

enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
{
	enum fdt_compat_id id;

	/* Search our drivers */
	for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
		if (0 == fdt_node_check_compatible(blob, node,
				compat_names[id]))
			return id;
	return COMPAT_UNKNOWN;
}

int fdtdec_next_compatible(const void *blob, int node,
		enum fdt_compat_id id)
{
	return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
}

int fdtdec_next_compatible_subnode(const void *blob, int node,
		enum fdt_compat_id id, int *depthp)
{
	do {
		node = fdt_next_node(blob, node, depthp);
	} while (*depthp > 1);

	/* If this is a direct subnode, and compatible, return it */
	if (*depthp == 1 && 0 == fdt_node_check_compatible(
						blob, node, compat_names[id]))
		return node;

	return -FDT_ERR_NOTFOUND;
}

int fdtdec_next_alias(const void *blob, const char *name,
		enum fdt_compat_id id, int *upto)
{
#define MAX_STR_LEN 20
	char str[MAX_STR_LEN + 20];
	int node, err;

	/* snprintf() is not available */
	assert(strlen(name) < MAX_STR_LEN);
	sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
	node = fdt_path_offset(blob, str);
	if (node < 0)
		return node;
	err = fdt_node_check_compatible(blob, node, compat_names[id]);
	if (err < 0)
		return err;
	if (err)
		return -FDT_ERR_NOTFOUND;
	(*upto)++;
	return node;
}

int fdtdec_find_aliases_for_id(const void *blob, const char *name,
			enum fdt_compat_id id, int *node_list, int maxcount)
{
	memset(node_list, '\0', sizeof(*node_list) * maxcount);

	return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
}

/* TODO: Can we tighten this code up a little? */
int fdtdec_add_aliases_for_id(const void *blob, const char *name,
			enum fdt_compat_id id, int *node_list, int maxcount)
{
	int name_len = strlen(name);
	int nodes[maxcount];
	int num_found = 0;
	int offset, node;
	int alias_node;
	int count;
	int i, j;

	/* find the alias node if present */
	alias_node = fdt_path_offset(blob, "/aliases");

	/*
	 * start with nothing, and we can assume that the root node can't
	 * match
	 */
	memset(nodes, '\0', sizeof(nodes));

	/* First find all the compatible nodes */
	for (node = count = 0; node >= 0 && count < maxcount;) {
		node = fdtdec_next_compatible(blob, node, id);
		if (node >= 0)
			nodes[count++] = node;
	}
	if (node >= 0)
		debug("%s: warning: maxcount exceeded with alias '%s'\n",
		       __func__, name);

	/* Now find all the aliases */
	for (offset = fdt_first_property_offset(blob, alias_node);
			offset > 0;
			offset = fdt_next_property_offset(blob, offset)) {
		const struct fdt_property *prop;
		const char *path;
		int number;
		int found;

		node = 0;
		prop = fdt_get_property_by_offset(blob, offset, NULL);
		path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
		if (prop->len && 0 == strncmp(path, name, name_len))
			node = fdt_path_offset(blob, prop->data);
		if (node <= 0)
			continue;

		/* Get the alias number */
		number = simple_strtoul(path + name_len, NULL, 10);
		if (number < 0 || number >= maxcount) {
			debug("%s: warning: alias '%s' is out of range\n",
			       __func__, path);
			continue;
		}

		/* Make sure the node we found is actually in our list! */
		found = -1;
		for (j = 0; j < count; j++)
			if (nodes[j] == node) {
				found = j;
				break;
			}

		if (found == -1) {
			debug("%s: warning: alias '%s' points to a node "
				"'%s' that is missing or is not compatible "
				" with '%s'\n", __func__, path,
				fdt_get_name(blob, node, NULL),
			       compat_names[id]);
			continue;
		}

		/*
		 * Add this node to our list in the right place, and mark
		 * it as done.
		 */
		if (fdtdec_get_is_enabled(blob, node)) {
			if (node_list[number]) {
				debug("%s: warning: alias '%s' requires that "
				      "a node be placed in the list in a "
				      "position which is already filled by "
				      "node '%s'\n", __func__, path,
				      fdt_get_name(blob, node, NULL));
				continue;
			}
			node_list[number] = node;
			if (number >= num_found)
				num_found = number + 1;
		}
		nodes[found] = 0;
	}

	/* Add any nodes not mentioned by an alias */
	for (i = j = 0; i < maxcount; i++) {
		if (!node_list[i]) {
			for (; j < maxcount; j++)
				if (nodes[j] &&
					fdtdec_get_is_enabled(blob, nodes[j]))
					break;

			/* Have we run out of nodes to add? */
			if (j == maxcount)
				break;

			assert(!node_list[i]);
			node_list[i] = nodes[j++];
			if (i >= num_found)
				num_found = i + 1;
		}
	}

	return num_found;
}

int fdtdec_check_fdt(void)
{
	/*
	 * We must have an FDT, but we cannot panic() yet since the console
	 * is not ready. So for now, just assert(). Boards which need an early
	 * FDT (prior to console ready) will need to make their own
	 * arrangements and do their own checks.
	 */
	assert(!fdtdec_prepare_fdt());
	return 0;
}

/*
 * This function is a little odd in that it accesses global data. At some
 * point if the architecture board.c files merge this will make more sense.
 * Even now, it is common code.
 */
int fdtdec_prepare_fdt(void)
{
	if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
	    fdt_check_header(gd->fdt_blob)) {
		printf("No valid FDT found - please append one to U-Boot "
			"binary, use u-boot-dtb.bin or define "
			"CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n");
		return -1;
	}
	return 0;
}

int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
{
	const u32 *phandle;
	int lookup;

	debug("%s: %s\n", __func__, prop_name);
	phandle = fdt_getprop(blob, node, prop_name, NULL);
	if (!phandle)
		return -FDT_ERR_NOTFOUND;

	lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
	return lookup;
}

/**
 * Look up a property in a node and check that it has a minimum length.
 *
 * @param blob		FDT blob
 * @param node		node to examine
 * @param prop_name	name of property to find
 * @param min_len	minimum property length in bytes
 * @param err		0 if ok, or -FDT_ERR_NOTFOUND if the property is not
			found, or -FDT_ERR_BADLAYOUT if not enough data
 * @return pointer to cell, which is only valid if err == 0
 */
static const void *get_prop_check_min_len(const void *blob, int node,
		const char *prop_name, int min_len, int *err)
{
	const void *cell;
	int len;

	debug("%s: %s\n", __func__, prop_name);
	cell = fdt_getprop(blob, node, prop_name, &len);
	if (!cell)
		*err = -FDT_ERR_NOTFOUND;
	else if (len < min_len)
		*err = -FDT_ERR_BADLAYOUT;
	else
		*err = 0;
	return cell;
}

int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
		u32 *array, int count)
{
	const u32 *cell;
	int i, err = 0;

	debug("%s: %s\n", __func__, prop_name);
	cell = get_prop_check_min_len(blob, node, prop_name,
				      sizeof(u32) * count, &err);
	if (!err) {
		for (i = 0; i < count; i++)
			array[i] = fdt32_to_cpu(cell[i]);
	}
	return err;
}

const u32 *fdtdec_locate_array(const void *blob, int node,
			       const char *prop_name, int count)
{
	const u32 *cell;
	int err;

	cell = get_prop_check_min_len(blob, node, prop_name,
				      sizeof(u32) * count, &err);
	return err ? NULL : cell;
}

int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
{
	const s32 *cell;
	int len;

	debug("%s: %s\n", __func__, prop_name);
	cell = fdt_getprop(blob, node, prop_name, &len);
	return cell != NULL;
}

/**
 * Decode a list of GPIOs from an FDT. This creates a list of GPIOs with no
 * terminating item.
 *
 * @param blob		FDT blob to use
 * @param node		Node to look at
 * @param prop_name	Node property name
 * @param gpio		Array of gpio elements to fill from FDT. This will be
 *			untouched if either 0 or an error is returned
 * @param max_count	Maximum number of elements allowed
 * @return number of GPIOs read if ok, -FDT_ERR_BADLAYOUT if max_count would
 * be exceeded, or -FDT_ERR_NOTFOUND if the property is missing.
 */
int fdtdec_decode_gpios(const void *blob, int node, const char *prop_name,
		struct fdt_gpio_state *gpio, int max_count)
{
	const struct fdt_property *prop;
	const u32 *cell;
	const char *name;
	int len, i;

	debug("%s: %s\n", __func__, prop_name);
	assert(max_count > 0);
	prop = fdt_get_property(blob, node, prop_name, &len);
	if (!prop) {
		debug("%s: property '%s' missing\n", __func__, prop_name);
		return -FDT_ERR_NOTFOUND;
	}

	/* We will use the name to tag the GPIO */
	name = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
	cell = (u32 *)prop->data;
	len /= sizeof(u32) * 3;		/* 3 cells per GPIO record */
	if (len > max_count) {
		debug(" %s: too many GPIOs / cells for "
			"property '%s'\n", __func__, prop_name);
		return -FDT_ERR_BADLAYOUT;
	}

	/* Read out the GPIO data from the cells */
	for (i = 0; i < len; i++, cell += 3) {
		gpio[i].gpio = fdt32_to_cpu(cell[1]);
		gpio[i].flags = fdt32_to_cpu(cell[2]);
		gpio[i].name = name;
	}

	return len;
}

int fdtdec_decode_gpio(const void *blob, int node, const char *prop_name,
		struct fdt_gpio_state *gpio)
{
	int err;

	debug("%s: %s\n", __func__, prop_name);
	gpio->gpio = FDT_GPIO_NONE;
	gpio->name = NULL;
	err = fdtdec_decode_gpios(blob, node, prop_name, gpio, 1);
	return err == 1 ? 0 : err;
}

int fdtdec_get_gpio(struct fdt_gpio_state *gpio)
{
	int val;

	if (!fdt_gpio_isvalid(gpio))
		return -1;

	val = gpio_get_value(gpio->gpio);
	return gpio->flags & FDT_GPIO_ACTIVE_LOW ? val ^ 1 : val;
}

int fdtdec_set_gpio(struct fdt_gpio_state *gpio, int val)
{
	if (!fdt_gpio_isvalid(gpio))
		return -1;

	val = gpio->flags & FDT_GPIO_ACTIVE_LOW ? val ^ 1 : val;
	return gpio_set_value(gpio->gpio, val);
}

int fdtdec_setup_gpio(struct fdt_gpio_state *gpio)
{
	/*
	 * Return success if there is no GPIO defined. This is used for
	 * optional GPIOs)
	 */
	if (!fdt_gpio_isvalid(gpio))
		return 0;

	if (gpio_request(gpio->gpio, gpio->name))
		return -1;
	return 0;
}

int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
		u8 *array, int count)
{
	const u8 *cell;
	int err;

	cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
	if (!err)
		memcpy(array, cell, count);
	return err;
}

const u8 *fdtdec_locate_byte_array(const void *blob, int node,
			     const char *prop_name, int count)
{
	const u8 *cell;
	int err;

	cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
	if (err)
		return NULL;
	return cell;
}

int fdtdec_get_config_int(const void *blob, const char *prop_name,
		int default_val)
{
	int config_node;

	debug("%s: %s\n", __func__, prop_name);
	config_node = fdt_path_offset(blob, "/config");
	if (config_node < 0)
		return default_val;
	return fdtdec_get_int(blob, config_node, prop_name, default_val);
}

int fdtdec_get_config_bool(const void *blob, const char *prop_name)
{
	int config_node;
	const void *prop;

	debug("%s: %s\n", __func__, prop_name);
	config_node = fdt_path_offset(blob, "/config");
	if (config_node < 0)
		return 0;
	prop = fdt_get_property(blob, config_node, prop_name, NULL);

	return prop != NULL;
}

char *fdtdec_get_config_string(const void *blob, const char *prop_name)
{
	const char *nodep;
	int nodeoffset;
	int len;

	debug("%s: %s\n", __func__, prop_name);
	nodeoffset = fdt_path_offset(blob, "/config");
	if (nodeoffset < 0)
		return NULL;

	nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
	if (!nodep)
		return NULL;

	return (char *)nodep;
}

int fdtdec_decode_region(const void *blob, int node,
		const char *prop_name, void **ptrp, size_t *size)
{
	const fdt_addr_t *cell;
	int len;

	debug("%s: %s\n", __func__, prop_name);
	cell = fdt_getprop(blob, node, prop_name, &len);
	if (!cell || (len != sizeof(fdt_addr_t) * 2))
		return -1;

	*ptrp = map_sysmem(fdt_addr_to_cpu(*cell), *size);
	*size = fdt_size_to_cpu(cell[1]);
	debug("%s: size=%zx\n", __func__, *size);
	return 0;
}

/**
 * Read a flash entry from the fdt
 *
 * @param blob		FDT blob
 * @param node		Offset of node to read
 * @param name		Name of node being read
 * @param entry		Place to put offset and size of this node
 * @return 0 if ok, -ve on error
 */
int fdtdec_read_fmap_entry(const void *blob, int node, const char *name,
			   struct fmap_entry *entry)
{
	u32 reg[2];

	if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) {
		debug("Node '%s' has bad/missing 'reg' property\n", name);
		return -FDT_ERR_NOTFOUND;
	}
	entry->offset = reg[0];
	entry->length = reg[1];

	return 0;
}
#else
#include "libfdt.h"
#include "fdt_support.h"

int fdtdec_get_int(const void *blob, int node, const char *prop_name,
		int default_val)
{
	const int *cell;
	int len;

	cell = fdt_getprop_w((void *)blob, node, prop_name, &len);
	if (cell && len >= sizeof(int)) {
		int val = fdt32_to_cpu(cell[0]);

		return val;
	}
	return default_val;
}
#endif
Commit	Line	Data
b5220bc6 SG	1	/*
b5220bc6 SG	2	* Copyright (c) 2011 The Chromium OS Authors.
1a459660	3	* SPDX-License-Identifier: GPL-2.0+
b5220bc6 SG	4	*/
b5220bc6 SG	5
29a23f9d	6	#ifndef USE_HOSTCC
b5220bc6 SG	7	#include <common.h>
	8	#include <serial.h>
	9	#include <libfdt.h>
	10	#include <fdtdec.h>
	11
e46431e1	12	#include <asm/gpio.h>
ed3ee5cd	13
b5220bc6 SG	14	DECLARE_GLOBAL_DATA_PTR;
	15
	16	/*
	17	* Here are the type we know about. One day we might allow drivers to
	18	* register. For now we just put them here. The COMPAT macro allows us to
	19	* turn this into a sparse list later, and keeps the ID with the name.
	20	*/
	21	#define COMPAT(id, name) name
	22	static const char * const compat_names[COMPAT_COUNT] = {
f88fe2de	23	COMPAT(UNKNOWN, "<none>"),
87f938c9	24	COMPAT(NVIDIA_TEGRA20_USB, "nvidia,tegra20-ehci"),
7e44d932 JL	25	COMPAT(NVIDIA_TEGRA30_USB, "nvidia,tegra30-ehci"),
7e44d932 JL	26	COMPAT(NVIDIA_TEGRA114_USB, "nvidia,tegra114-ehci"),
e32624ef	27	COMPAT(NVIDIA_TEGRA114_I2C, "nvidia,tegra114-i2c"),
96a78ac0 YL	28	COMPAT(NVIDIA_TEGRA20_I2C, "nvidia,tegra20-i2c"),
96a78ac0 YL	29	COMPAT(NVIDIA_TEGRA20_DVC, "nvidia,tegra20-i2c-dvc"),
0e35ad05 JZ	30	COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
0e35ad05 JZ	31	COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
6642a681	32	COMPAT(NVIDIA_TEGRA20_KBC, "nvidia,tegra20-kbc"),
312693c3	33	COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
e1ae0d1f	34	COMPAT(NVIDIA_TEGRA20_PWM, "nvidia,tegra20-pwm"),
87540de3	35	COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"),
a73ca478	36	COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"),
f4e4e0b0	37	COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"),
c9aa831e	38	COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"),
8f1b46b1	39	COMPAT(NVIDIA_TEGRA20_SFLASH, "nvidia,tegra20-sflash"),
b19f5749	40	COMPAT(NVIDIA_TEGRA20_SLINK, "nvidia,tegra20-slink"),
c3bb3c8b	41	COMPAT(NVIDIA_TEGRA114_SPI, "nvidia,tegra114-spi"),
cc9fe33a HR	42	COMPAT(SMSC_LAN9215, "smsc,lan9215"),
cc9fe33a HR	43	COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
c34253d1	44	COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"),
72dbff12 RS	45	COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"),
72dbff12 RS	46	COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"),
5d50659d	47	COMPAT(SAMSUNG_EXYNOS_SPI, "samsung,exynos-spi"),
88364387	48	COMPAT(GOOGLE_CROS_EC, "google,cros-ec"),
713cb680	49	COMPAT(GOOGLE_CROS_EC_KEYB, "google,cros-ec-keyb"),
6abd1620	50	COMPAT(SAMSUNG_EXYNOS_EHCI, "samsung,exynos-ehci"),
108b85be	51	COMPAT(SAMSUNG_EXYNOS5_XHCI, "samsung,exynos5250-xhci"),
6abd1620	52	COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
108b85be	53	COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
618766c0	54	COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
d7377b51	55	COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"),
1e4706a7	56	COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"),
45a4d4d3	57	COMPAT(SAMSUNG_EXYNOS5_DWMMC, "samsung,exynos5250-dwmmc"),
ee1e3c2f	58	COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"),
cd577e2b	59	COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686_pmic"),
bb8215f4	60	COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
7772bb78	61	COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"),
f6267998	62	COMPAT(INFINEON_SLB9635_TPM, "infineon,slb9635-tpm"),
ec34fa5e	63	COMPAT(INFINEON_SLB9645_TPM, "infineon,slb9645-tpm"),
ecbd7e1e	64	COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"),
df93d90a	65	COMPAT(SANDBOX_HOST_EMULATION, "sandbox,host-emulation"),
7d95f2a3	66	COMPAT(SANDBOX_LCD_SDL, "sandbox,lcd-sdl"),
b5220bc6 SG	67	};
b5220bc6 SG	68
a53f4a29 SG	69	const char *fdtdec_get_compatible(enum fdt_compat_id id)
	70	{
	71	/* We allow reading of the 'unknown' ID for testing purposes */
	72	assert(id >= 0 && id < COMPAT_COUNT);
	73	return compat_names[id];
	74	}
	75
4397a2a8 SG	76	fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
4397a2a8 SG	77	const char prop_name, fdt_size_t sizep)
b5220bc6 SG	78	{
	79	const fdt_addr_t *cell;
	80	int len;
	81
1cb2323b	82	debug("%s: %s: ", __func__, prop_name);
b5220bc6	83	cell = fdt_getprop(blob, node, prop_name, &len);
4397a2a8 SG	84	if (cell && ((!sizep && len == sizeof(fdt_addr_t)) \|\|
4397a2a8 SG	85	len == sizeof(fdt_addr_t) * 2)) {
1cb2323b	86	fdt_addr_t addr = fdt_addr_to_cpu(*cell);
4397a2a8 SG	87	if (sizep) {
4397a2a8 SG	88	const fdt_size_t *size;
1cb2323b	89
4397a2a8 SG	90	size = (fdt_size_t )((char )cell +
	91	sizeof(fdt_addr_t));
	92	sizep = fdt_size_to_cpu(size);
370b6c5c SG	93	debug("addr=%08lx, size=%08x\n",
370b6c5c SG	94	(ulong)addr, *sizep);
4397a2a8	95	} else {
370b6c5c	96	debug("%08lx\n", (ulong)addr);
4397a2a8	97	}
1cb2323b SG	98	return addr;
	99	}
	100	debug("(not found)\n");
b5220bc6 SG	101	return FDT_ADDR_T_NONE;
	102	}
	103
4397a2a8 SG	104	fdt_addr_t fdtdec_get_addr(const void *blob, int node,
	105	const char *prop_name)
	106	{
	107	return fdtdec_get_addr_size(blob, node, prop_name, NULL);
	108	}
	109
b5220bc6 SG	110	s32 fdtdec_get_int(const void blob, int node, const char prop_name,
	111	s32 default_val)
	112	{
	113	const s32 *cell;
	114	int len;
	115
1cb2323b	116	debug("%s: %s: ", __func__, prop_name);
b5220bc6	117	cell = fdt_getprop(blob, node, prop_name, &len);
1cb2323b SG	118	if (cell && len >= sizeof(s32)) {
	119	s32 val = fdt32_to_cpu(cell[0]);
	120
	121	debug("%#x (%d)\n", val, val);
	122	return val;
	123	}
	124	debug("(not found)\n");
b5220bc6 SG	125	return default_val;
	126	}
	127
aadef0a1 CLC	128	uint64_t fdtdec_get_uint64(const void blob, int node, const char prop_name,
	129	uint64_t default_val)
	130	{
	131	const uint64_t *cell64;
	132	int length;
	133
	134	cell64 = fdt_getprop(blob, node, prop_name, &length);
	135	if (!cell64 \|\| length < sizeof(*cell64))
	136	return default_val;
	137
	138	return fdt64_to_cpu(*cell64);
	139	}
	140
f88fe2de	141	int fdtdec_get_is_enabled(const void *blob, int node)
b5220bc6 SG	142	{
	143	const char *cell;
	144
f88fe2de SG	145	/*
	146	* It should say "okay", so only allow that. Some fdts use "ok" but
	147	* this is a bug. Please fix your device tree source file. See here
	148	* for discussion:
	149	*
	150	* http://www.mail-archive.com/[email protected]/msg71598.html
	151	*/
b5220bc6 SG	152	cell = fdt_getprop(blob, node, "status", NULL);
b5220bc6 SG	153	if (cell)
f88fe2de SG	154	return 0 == strcmp(cell, "okay");
f88fe2de SG	155	return 1;
b5220bc6 SG	156	}
b5220bc6 SG	157
7cde397b	158	enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
b5220bc6 SG	159	{
	160	enum fdt_compat_id id;
	161
	162	/* Search our drivers */
	163	for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
	164	if (0 == fdt_node_check_compatible(blob, node,
	165	compat_names[id]))
	166	return id;
	167	return COMPAT_UNKNOWN;
	168	}
	169
	170	int fdtdec_next_compatible(const void *blob, int node,
	171	enum fdt_compat_id id)
	172	{
	173	return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
	174	}
	175
3ddecfc7 SG	176	int fdtdec_next_compatible_subnode(const void *blob, int node,
	177	enum fdt_compat_id id, int *depthp)
	178	{
	179	do {
	180	node = fdt_next_node(blob, node, depthp);
	181	} while (*depthp > 1);
	182
	183	/* If this is a direct subnode, and compatible, return it */
	184	if (*depthp == 1 && 0 == fdt_node_check_compatible(
	185	blob, node, compat_names[id]))
	186	return node;
	187
	188	return -FDT_ERR_NOTFOUND;
	189	}
	190
b5220bc6 SG	191	int fdtdec_next_alias(const void blob, const char name,
	192	enum fdt_compat_id id, int *upto)
	193	{
	194	#define MAX_STR_LEN 20
	195	char str[MAX_STR_LEN + 20];
	196	int node, err;
	197
	198	/* snprintf() is not available */
	199	assert(strlen(name) < MAX_STR_LEN);
	200	sprintf(str, "%.s%d", MAX_STR_LEN, name, upto);
00878476	201	node = fdt_path_offset(blob, str);
b5220bc6 SG	202	if (node < 0)
	203	return node;
	204	err = fdt_node_check_compatible(blob, node, compat_names[id]);
	205	if (err < 0)
	206	return err;
f88fe2de SG	207	if (err)
	208	return -FDT_ERR_NOTFOUND;
	209	(*upto)++;
	210	return node;
b5220bc6 SG	211	}
b5220bc6 SG	212
a53f4a29 SG	213	int fdtdec_find_aliases_for_id(const void blob, const char name,
a53f4a29 SG	214	enum fdt_compat_id id, int *node_list, int maxcount)
c6782270 SG	215	{
	216	memset(node_list, '\0', sizeof(node_list) maxcount);
	217
	218	return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
	219	}
	220
	221	/* TODO: Can we tighten this code up a little? */
	222	int fdtdec_add_aliases_for_id(const void blob, const char name,
	223	enum fdt_compat_id id, int *node_list, int maxcount)
a53f4a29 SG	224	{
	225	int name_len = strlen(name);
	226	int nodes[maxcount];
	227	int num_found = 0;
	228	int offset, node;
	229	int alias_node;
	230	int count;
	231	int i, j;
	232
	233	/* find the alias node if present */
	234	alias_node = fdt_path_offset(blob, "/aliases");
	235
	236	/*
	237	* start with nothing, and we can assume that the root node can't
	238	* match
	239	*/
	240	memset(nodes, '\0', sizeof(nodes));
	241
	242	/* First find all the compatible nodes */
	243	for (node = count = 0; node >= 0 && count < maxcount;) {
	244	node = fdtdec_next_compatible(blob, node, id);
	245	if (node >= 0)
	246	nodes[count++] = node;
	247	}
	248	if (node >= 0)
	249	debug("%s: warning: maxcount exceeded with alias '%s'\n",
	250	__func__, name);
	251
	252	/* Now find all the aliases */
a53f4a29 SG	253	for (offset = fdt_first_property_offset(blob, alias_node);
	254	offset > 0;
	255	offset = fdt_next_property_offset(blob, offset)) {
	256	const struct fdt_property *prop;
	257	const char *path;
	258	int number;
	259	int found;
	260
	261	node = 0;
	262	prop = fdt_get_property_by_offset(blob, offset, NULL);
	263	path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
	264	if (prop->len && 0 == strncmp(path, name, name_len))
	265	node = fdt_path_offset(blob, prop->data);
	266	if (node <= 0)
	267	continue;
	268
	269	/* Get the alias number */
	270	number = simple_strtoul(path + name_len, NULL, 10);
	271	if (number < 0 \|\| number >= maxcount) {
	272	debug("%s: warning: alias '%s' is out of range\n",
	273	__func__, path);
	274	continue;
	275	}
	276
	277	/* Make sure the node we found is actually in our list! */
	278	found = -1;
	279	for (j = 0; j < count; j++)
	280	if (nodes[j] == node) {
	281	found = j;
	282	break;
	283	}
	284
	285	if (found == -1) {
	286	debug("%s: warning: alias '%s' points to a node "
	287	"'%s' that is missing or is not compatible "
	288	" with '%s'\n", __func__, path,
	289	fdt_get_name(blob, node, NULL),
	290	compat_names[id]);
	291	continue;
	292	}
	293
	294	/*
	295	* Add this node to our list in the right place, and mark
	296	* it as done.
	297	*/
	298	if (fdtdec_get_is_enabled(blob, node)) {
c6782270 SG	299	if (node_list[number]) {
	300	debug("%s: warning: alias '%s' requires that "
	301	"a node be placed in the list in a "
	302	"position which is already filled by "
	303	"node '%s'\n", __func__, path,
	304	fdt_get_name(blob, node, NULL));
	305	continue;
	306	}
a53f4a29 SG	307	node_list[number] = node;
	308	if (number >= num_found)
	309	num_found = number + 1;
	310	}
c6782270	311	nodes[found] = 0;
a53f4a29 SG	312	}
	313
	314	/* Add any nodes not mentioned by an alias */
	315	for (i = j = 0; i < maxcount; i++) {
	316	if (!node_list[i]) {
	317	for (; j < maxcount; j++)
	318	if (nodes[j] &&
	319	fdtdec_get_is_enabled(blob, nodes[j]))
	320	break;
	321
	322	/* Have we run out of nodes to add? */
	323	if (j == maxcount)
	324	break;
	325
	326	assert(!node_list[i]);
	327	node_list[i] = nodes[j++];
	328	if (i >= num_found)
	329	num_found = i + 1;
	330	}
	331	}
	332
	333	return num_found;
	334	}
	335
9a263e55 SG	336	int fdtdec_check_fdt(void)
	337	{
	338	/*
	339	* We must have an FDT, but we cannot panic() yet since the console
	340	* is not ready. So for now, just assert(). Boards which need an early
	341	* FDT (prior to console ready) will need to make their own
	342	* arrangements and do their own checks.
	343	*/
	344	assert(!fdtdec_prepare_fdt());
	345	return 0;
	346	}
	347
b5220bc6 SG	348	/*
	349	* This function is a little odd in that it accesses global data. At some
	350	* point if the architecture board.c files merge this will make more sense.
	351	* Even now, it is common code.
	352	*/
9a263e55	353	int fdtdec_prepare_fdt(void)
b5220bc6	354	{
c309c2da SG	355	if (!gd->fdt_blob \|\| ((uintptr_t)gd->fdt_blob & 3) \|\|
c309c2da SG	356	fdt_check_header(gd->fdt_blob)) {
9a263e55 SG	357	printf("No valid FDT found - please append one to U-Boot "
9a263e55 SG	358	"binary, use u-boot-dtb.bin or define "
a733b06b	359	"CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n");
9a263e55 SG	360	return -1;
9a263e55 SG	361	}
b5220bc6 SG	362	return 0;
b5220bc6 SG	363	}
d17da655 SG	364
	365	int fdtdec_lookup_phandle(const void blob, int node, const char prop_name)
	366	{
	367	const u32 *phandle;
	368	int lookup;
	369
1cb2323b	370	debug("%s: %s\n", __func__, prop_name);
d17da655 SG	371	phandle = fdt_getprop(blob, node, prop_name, NULL);
	372	if (!phandle)
	373	return -FDT_ERR_NOTFOUND;
	374
	375	lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
	376	return lookup;
	377	}
	378
	379	/**
	380	* Look up a property in a node and check that it has a minimum length.
	381	*
	382	* @param blob FDT blob
	383	* @param node node to examine
	384	* @param prop_name name of property to find
	385	* @param min_len minimum property length in bytes
	386	* @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
	387	found, or -FDT_ERR_BADLAYOUT if not enough data
	388	* @return pointer to cell, which is only valid if err == 0
	389	*/
	390	static const void get_prop_check_min_len(const void blob, int node,
	391	const char prop_name, int min_len, int err)
	392	{
	393	const void *cell;
	394	int len;
	395
	396	debug("%s: %s\n", __func__, prop_name);
	397	cell = fdt_getprop(blob, node, prop_name, &len);
	398	if (!cell)
	399	*err = -FDT_ERR_NOTFOUND;
	400	else if (len < min_len)
	401	*err = -FDT_ERR_BADLAYOUT;
	402	else
	403	*err = 0;
	404	return cell;
	405	}
	406
	407	int fdtdec_get_int_array(const void blob, int node, const char prop_name,
	408	u32 *array, int count)
	409	{
	410	const u32 *cell;
	411	int i, err = 0;
	412
	413	debug("%s: %s\n", __func__, prop_name);
	414	cell = get_prop_check_min_len(blob, node, prop_name,
	415	sizeof(u32) * count, &err);
	416	if (!err) {
	417	for (i = 0; i < count; i++)
	418	array[i] = fdt32_to_cpu(cell[i]);
	419	}
	420	return err;
	421	}
	422
96875e7d SG	423	const u32 fdtdec_locate_array(const void blob, int node,
	424	const char *prop_name, int count)
	425	{
	426	const u32 *cell;
	427	int err;
	428
	429	cell = get_prop_check_min_len(blob, node, prop_name,
	430	sizeof(u32) * count, &err);
	431	return err ? NULL : cell;
	432	}
	433
d17da655 SG	434	int fdtdec_get_bool(const void blob, int node, const char prop_name)
	435	{
	436	const s32 *cell;
	437	int len;
	438
	439	debug("%s: %s\n", __func__, prop_name);
	440	cell = fdt_getprop(blob, node, prop_name, &len);
	441	return cell != NULL;
	442	}
ed3ee5cd SG	443
	444	/**
	445	* Decode a list of GPIOs from an FDT. This creates a list of GPIOs with no
	446	* terminating item.
	447	*
	448	* @param blob FDT blob to use
	449	* @param node Node to look at
	450	* @param prop_name Node property name
	451	* @param gpio Array of gpio elements to fill from FDT. This will be
	452	* untouched if either 0 or an error is returned
	453	* @param max_count Maximum number of elements allowed
	454	* @return number of GPIOs read if ok, -FDT_ERR_BADLAYOUT if max_count would
	455	* be exceeded, or -FDT_ERR_NOTFOUND if the property is missing.
	456	*/
5921f6a2 AK	457	int fdtdec_decode_gpios(const void blob, int node, const char prop_name,
5921f6a2 AK	458	struct fdt_gpio_state *gpio, int max_count)
ed3ee5cd SG	459	{
	460	const struct fdt_property *prop;
	461	const u32 *cell;
	462	const char *name;
	463	int len, i;
	464
	465	debug("%s: %s\n", __func__, prop_name);
	466	assert(max_count > 0);
	467	prop = fdt_get_property(blob, node, prop_name, &len);
	468	if (!prop) {
1cb2323b	469	debug("%s: property '%s' missing\n", __func__, prop_name);
ed3ee5cd SG	470	return -FDT_ERR_NOTFOUND;
	471	}
	472
	473	/* We will use the name to tag the GPIO */
	474	name = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
	475	cell = (u32 *)prop->data;
	476	len /= sizeof(u32) * 3; /* 3 cells per GPIO record */
	477	if (len > max_count) {
1cb2323b	478	debug(" %s: too many GPIOs / cells for "
ed3ee5cd SG	479	"property '%s'\n", __func__, prop_name);
	480	return -FDT_ERR_BADLAYOUT;
	481	}
	482
	483	/* Read out the GPIO data from the cells */
	484	for (i = 0; i < len; i++, cell += 3) {
	485	gpio[i].gpio = fdt32_to_cpu(cell[1]);
	486	gpio[i].flags = fdt32_to_cpu(cell[2]);
	487	gpio[i].name = name;
	488	}
	489
	490	return len;
	491	}
	492
	493	int fdtdec_decode_gpio(const void blob, int node, const char prop_name,
	494	struct fdt_gpio_state *gpio)
	495	{
	496	int err;
	497
	498	debug("%s: %s\n", __func__, prop_name);
	499	gpio->gpio = FDT_GPIO_NONE;
	500	gpio->name = NULL;
	501	err = fdtdec_decode_gpios(blob, node, prop_name, gpio, 1);
	502	return err == 1 ? 0 : err;
	503	}
	504
202ff753 SP	505	int fdtdec_get_gpio(struct fdt_gpio_state *gpio)
	506	{
	507	int val;
	508
	509	if (!fdt_gpio_isvalid(gpio))
	510	return -1;
	511
	512	val = gpio_get_value(gpio->gpio);
	513	return gpio->flags & FDT_GPIO_ACTIVE_LOW ? val ^ 1 : val;
	514	}
	515
	516	int fdtdec_set_gpio(struct fdt_gpio_state *gpio, int val)
	517	{
	518	if (!fdt_gpio_isvalid(gpio))
	519	return -1;
	520
	521	val = gpio->flags & FDT_GPIO_ACTIVE_LOW ? val ^ 1 : val;
	522	return gpio_set_value(gpio->gpio, val);
	523	}
	524
ed3ee5cd SG	525	int fdtdec_setup_gpio(struct fdt_gpio_state *gpio)
	526	{
	527	/*
	528	* Return success if there is no GPIO defined. This is used for
	529	* optional GPIOs)
	530	*/
	531	if (!fdt_gpio_isvalid(gpio))
	532	return 0;
	533
	534	if (gpio_request(gpio->gpio, gpio->name))
	535	return -1;
	536	return 0;
	537	}
bed4d892 AS	538
	539	int fdtdec_get_byte_array(const void blob, int node, const char prop_name,
	540	u8 *array, int count)
	541	{
	542	const u8 *cell;
	543	int err;
	544
	545	cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
	546	if (!err)
	547	memcpy(array, cell, count);
	548	return err;
	549	}
	550
	551	const u8 fdtdec_locate_byte_array(const void blob, int node,
	552	const char *prop_name, int count)
	553	{
	554	const u8 *cell;
	555	int err;
	556
	557	cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
	558	if (err)
	559	return NULL;
	560	return cell;
	561	}
09258f1e	562
09258f1e AK	563	int fdtdec_get_config_int(const void blob, const char prop_name,
	564	int default_val)
	565	{
	566	int config_node;
	567
	568	debug("%s: %s\n", __func__, prop_name);
	569	config_node = fdt_path_offset(blob, "/config");
	570	if (config_node < 0)
	571	return default_val;
	572	return fdtdec_get_int(blob, config_node, prop_name, default_val);
	573	}
332ab0d5	574
79289c0b GB	575	int fdtdec_get_config_bool(const void blob, const char prop_name)
	576	{
	577	int config_node;
	578	const void *prop;
	579
	580	debug("%s: %s\n", __func__, prop_name);
	581	config_node = fdt_path_offset(blob, "/config");
	582	if (config_node < 0)
	583	return 0;
	584	prop = fdt_get_property(blob, config_node, prop_name, NULL);
	585
	586	return prop != NULL;
	587	}
	588
332ab0d5 SG	589	char fdtdec_get_config_string(const void blob, const char *prop_name)
	590	{
	591	const char *nodep;
	592	int nodeoffset;
	593	int len;
	594
	595	debug("%s: %s\n", __func__, prop_name);
	596	nodeoffset = fdt_path_offset(blob, "/config");
	597	if (nodeoffset < 0)
	598	return NULL;
	599
	600	nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
	601	if (!nodep)
	602	return NULL;
	603
	604	return (char *)nodep;
	605	}
f20c4619 SG	606
	607	int fdtdec_decode_region(const void *blob, int node,
	608	const char prop_name, void ptrp, size_t size)
	609	{
	610	const fdt_addr_t *cell;
	611	int len;
	612
	613	debug("%s: %s\n", __func__, prop_name);
	614	cell = fdt_getprop(blob, node, prop_name, &len);
	615	if (!cell \|\| (len != sizeof(fdt_addr_t) * 2))
	616	return -1;
	617
370b6c5c	618	ptrp = map_sysmem(fdt_addr_to_cpu(cell), *size);
f20c4619 SG	619	*size = fdt_size_to_cpu(cell[1]);
	620	debug("%s: size=%zx\n", __func__, *size);
	621	return 0;
	622	}
006e73b9 SG	623
	624	/**
	625	* Read a flash entry from the fdt
	626	*
	627	* @param blob FDT blob
	628	* @param node Offset of node to read
	629	* @param name Name of node being read
	630	* @param entry Place to put offset and size of this node
	631	* @return 0 if ok, -ve on error
	632	*/
	633	int fdtdec_read_fmap_entry(const void blob, int node, const char name,
	634	struct fmap_entry *entry)
	635	{
	636	u32 reg[2];
	637
	638	if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) {
	639	debug("Node '%s' has bad/missing 'reg' property\n", name);
	640	return -FDT_ERR_NOTFOUND;
	641	}
	642	entry->offset = reg[0];
	643	entry->length = reg[1];
	644
	645	return 0;
	646	}
29a23f9d HS	647	#else
	648	#include "libfdt.h"
	649	#include "fdt_support.h"
	650
	651	int fdtdec_get_int(const void blob, int node, const char prop_name,
	652	int default_val)
	653	{
	654	const int *cell;
	655	int len;
	656
	657	cell = fdt_getprop_w((void *)blob, node, prop_name, &len);
	658	if (cell && len >= sizeof(int)) {
	659	int val = fdt32_to_cpu(cell[0]);
	660
	661	return val;
	662	}
	663	return default_val;
	664	}
	665	#endif