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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (c) 2011 The Chromium OS Authors.
- */
- #ifndef USE_HOSTCC
- #include <common.h>
- #include <boot_fit.h>
- #include <dm.h>
- #include <hang.h>
- #include <init.h>
- #include <malloc.h>
- #include <dm/of_extra.h>
- #include <env.h>
- #include <errno.h>
- #include <fdtdec.h>
- #include <fdt_support.h>
- #include <gzip.h>
- #include <mapmem.h>
- #include <linux/libfdt.h>
- #include <serial.h>
- #include <asm/sections.h>
- #include <linux/ctype.h>
- #include <linux/lzo.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.
- *
- * NOTE: This list is basically a TODO list for things that need to be
- * converted to driver model. So don't add new things here unless there is a
- * good reason why driver-model conversion is infeasible. Examples include
- * things which are used before driver model is available.
- */
- #define COMPAT(id, name) name
- static const char * const compat_names[COMPAT_COUNT] = {
- COMPAT(UNKNOWN, "<none>"),
- COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
- COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
- COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
- COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
- COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
- COMPAT(SMSC_LAN9215, "smsc,lan9215"),
- COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
- 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_MIPI_DSI, "samsung,exynos-mipi-dsi"),
- COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
- COMPAT(GENERIC_SPI_FLASH, "jedec,spi-nor"),
- COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
- COMPAT(INTEL_MICROCODE, "intel,microcode"),
- COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
- COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
- COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
- COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"),
- COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
- COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
- COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"),
- COMPAT(COMPAT_SUNXI_NAND, "allwinner,sun4i-a10-nand"),
- COMPAT(ALTERA_SOCFPGA_CLK, "altr,clk-mgr"),
- COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE, "pinctrl-single"),
- COMPAT(ALTERA_SOCFPGA_H2F_BRG, "altr,socfpga-hps2fpga-bridge"),
- COMPAT(ALTERA_SOCFPGA_LWH2F_BRG, "altr,socfpga-lwhps2fpga-bridge"),
- COMPAT(ALTERA_SOCFPGA_F2H_BRG, "altr,socfpga-fpga2hps-bridge"),
- COMPAT(ALTERA_SOCFPGA_F2SDR0, "altr,socfpga-fpga2sdram0-bridge"),
- COMPAT(ALTERA_SOCFPGA_F2SDR1, "altr,socfpga-fpga2sdram1-bridge"),
- COMPAT(ALTERA_SOCFPGA_F2SDR2, "altr,socfpga-fpga2sdram2-bridge"),
- COMPAT(ALTERA_SOCFPGA_FPGA0, "altr,socfpga-a10-fpga-mgr"),
- COMPAT(ALTERA_SOCFPGA_NOC, "altr,socfpga-a10-noc"),
- COMPAT(ALTERA_SOCFPGA_CLK_INIT, "altr,socfpga-a10-clk-init")
- };
- 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_fixed(const void *blob, int node,
- const char *prop_name, int index, int na,
- int ns, fdt_size_t *sizep,
- bool translate)
- {
- const fdt32_t *prop, *prop_end;
- const fdt32_t *prop_addr, *prop_size, *prop_after_size;
- int len;
- fdt_addr_t addr;
- debug("%s: %s: ", __func__, prop_name);
- prop = fdt_getprop(blob, node, prop_name, &len);
- if (!prop) {
- debug("(not found)\n");
- return FDT_ADDR_T_NONE;
- }
- prop_end = prop + (len / sizeof(*prop));
- prop_addr = prop + (index * (na + ns));
- prop_size = prop_addr + na;
- prop_after_size = prop_size + ns;
- if (prop_after_size > prop_end) {
- debug("(not enough data: expected >= %d cells, got %d cells)\n",
- (u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
- return FDT_ADDR_T_NONE;
- }
- #if CONFIG_IS_ENABLED(OF_TRANSLATE)
- if (translate)
- addr = fdt_translate_address(blob, node, prop_addr);
- else
- #endif
- addr = fdtdec_get_number(prop_addr, na);
- if (sizep) {
- *sizep = fdtdec_get_number(prop_size, ns);
- debug("addr=%08llx, size=%llx\n", (unsigned long long)addr,
- (unsigned long long)*sizep);
- } else {
- debug("addr=%08llx\n", (unsigned long long)addr);
- }
- return addr;
- }
- fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
- int node, const char *prop_name,
- int index, fdt_size_t *sizep,
- bool translate)
- {
- int na, ns;
- debug("%s: ", __func__);
- na = fdt_address_cells(blob, parent);
- if (na < 1) {
- debug("(bad #address-cells)\n");
- return FDT_ADDR_T_NONE;
- }
- ns = fdt_size_cells(blob, parent);
- if (ns < 0) {
- debug("(bad #size-cells)\n");
- return FDT_ADDR_T_NONE;
- }
- debug("na=%d, ns=%d, ", na, ns);
- return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
- ns, sizep, translate);
- }
- fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
- const char *prop_name, int index,
- fdt_size_t *sizep,
- bool translate)
- {
- int parent;
- debug("%s: ", __func__);
- parent = fdt_parent_offset(blob, node);
- if (parent < 0) {
- debug("(no parent found)\n");
- return FDT_ADDR_T_NONE;
- }
- return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
- index, sizep, translate);
- }
- fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
- const char *prop_name, fdt_size_t *sizep)
- {
- int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
- return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
- sizeof(fdt_addr_t) / sizeof(fdt32_t),
- ns, sizep, false);
- }
- 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);
- }
- #if CONFIG_IS_ENABLED(PCI) && defined(CONFIG_DM_PCI)
- int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
- {
- const char *list, *end;
- int len;
- list = fdt_getprop(blob, node, "compatible", &len);
- if (!list)
- return -ENOENT;
- end = list + len;
- while (list < end) {
- len = strlen(list);
- if (len >= strlen("pciVVVV,DDDD")) {
- char *s = strstr(list, "pci");
- /*
- * check if the string is something like pciVVVV,DDDD.RR
- * or just pciVVVV,DDDD
- */
- if (s && s[7] == ',' &&
- (s[12] == '.' || s[12] == 0)) {
- s += 3;
- *vendor = simple_strtol(s, NULL, 16);
- s += 5;
- *device = simple_strtol(s, NULL, 16);
- return 0;
- }
- }
- list += (len + 1);
- }
- return -ENOENT;
- }
- int fdtdec_get_pci_bar32(const struct udevice *dev, struct fdt_pci_addr *addr,
- u32 *bar)
- {
- int barnum;
- /* extract the bar number from fdt_pci_addr */
- barnum = addr->phys_hi & 0xff;
- if (barnum < PCI_BASE_ADDRESS_0 || barnum > PCI_CARDBUS_CIS)
- return -EINVAL;
- barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
- *bar = dm_pci_read_bar32(dev, barnum);
- return 0;
- }
- #endif
- uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
- uint64_t default_val)
- {
- const unaligned_fdt64_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/u-boot@lists.denx.de/msg71598.html
- */
- cell = fdt_getprop(blob, node, "status", NULL);
- if (cell)
- return strcmp(cell, "okay") == 0;
- 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 (fdt_node_check_compatible(blob, node,
- compat_names[id]) == 0)
- 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_get_alias_seq(const void *blob, const char *base, int offset,
- int *seqp)
- {
- int base_len = strlen(base);
- const char *find_name;
- int find_namelen;
- int prop_offset;
- int aliases;
- find_name = fdt_get_name(blob, offset, &find_namelen);
- debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
- aliases = fdt_path_offset(blob, "/aliases");
- for (prop_offset = fdt_first_property_offset(blob, aliases);
- prop_offset > 0;
- prop_offset = fdt_next_property_offset(blob, prop_offset)) {
- const char *prop;
- const char *name;
- const char *slash;
- int len, val;
- prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
- debug(" - %s, %s\n", name, prop);
- if (len < find_namelen || *prop != '/' || prop[len - 1] ||
- strncmp(name, base, base_len))
- continue;
- slash = strrchr(prop, '/');
- if (strcmp(slash + 1, find_name))
- continue;
- val = trailing_strtol(name);
- if (val != -1) {
- *seqp = val;
- debug("Found seq %d\n", *seqp);
- return 0;
- }
- }
- debug("Not found\n");
- return -ENOENT;
- }
- int fdtdec_get_alias_highest_id(const void *blob, const char *base)
- {
- int base_len = strlen(base);
- int prop_offset;
- int aliases;
- int max = -1;
- debug("Looking for highest alias id for '%s'\n", base);
- aliases = fdt_path_offset(blob, "/aliases");
- for (prop_offset = fdt_first_property_offset(blob, aliases);
- prop_offset > 0;
- prop_offset = fdt_next_property_offset(blob, prop_offset)) {
- const char *prop;
- const char *name;
- int len, val;
- prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
- debug(" - %s, %s\n", name, prop);
- if (*prop != '/' || prop[len - 1] ||
- strncmp(name, base, base_len))
- continue;
- val = trailing_strtol(name);
- if (val > max) {
- debug("Found seq %d\n", val);
- max = val;
- }
- }
- return max;
- }
- const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
- {
- int chosen_node;
- if (!blob)
- return NULL;
- chosen_node = fdt_path_offset(blob, "/chosen");
- return fdt_getprop(blob, chosen_node, name, NULL);
- }
- int fdtdec_get_chosen_node(const void *blob, const char *name)
- {
- const char *prop;
- prop = fdtdec_get_chosen_prop(blob, name);
- if (!prop)
- return -FDT_ERR_NOTFOUND;
- return fdt_path_offset(blob, prop);
- }
- 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)) {
- #ifdef CONFIG_SPL_BUILD
- puts("Missing DTB\n");
- #else
- puts("No valid device tree binary 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");
- # ifdef DEBUG
- if (gd->fdt_blob) {
- printf("fdt_blob=%p\n", gd->fdt_blob);
- print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
- 32, 0);
- }
- # endif
- #endif
- 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 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) {
- int i;
- for (i = 0; i < count; i++)
- array[i] = fdt32_to_cpu(cell[i]);
- }
- return err;
- }
- int fdtdec_get_int_array_count(const void *blob, int node,
- const char *prop_name, u32 *array, int count)
- {
- const u32 *cell;
- int len, elems;
- int i;
- debug("%s: %s\n", __func__, prop_name);
- cell = fdt_getprop(blob, node, prop_name, &len);
- if (!cell)
- return -FDT_ERR_NOTFOUND;
- elems = len / sizeof(u32);
- if (count > elems)
- count = elems;
- for (i = 0; i < count; i++)
- array[i] = fdt32_to_cpu(cell[i]);
- return count;
- }
- 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;
- }
- int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
- const char *list_name,
- const char *cells_name,
- int cell_count, int index,
- struct fdtdec_phandle_args *out_args)
- {
- const __be32 *list, *list_end;
- int rc = 0, size, cur_index = 0;
- uint32_t count = 0;
- int node = -1;
- int phandle;
- /* Retrieve the phandle list property */
- list = fdt_getprop(blob, src_node, list_name, &size);
- if (!list)
- return -ENOENT;
- list_end = list + size / sizeof(*list);
- /* Loop over the phandles until all the requested entry is found */
- while (list < list_end) {
- rc = -EINVAL;
- count = 0;
- /*
- * If phandle is 0, then it is an empty entry with no
- * arguments. Skip forward to the next entry.
- */
- phandle = be32_to_cpup(list++);
- if (phandle) {
- /*
- * Find the provider node and parse the #*-cells
- * property to determine the argument length.
- *
- * This is not needed if the cell count is hard-coded
- * (i.e. cells_name not set, but cell_count is set),
- * except when we're going to return the found node
- * below.
- */
- if (cells_name || cur_index == index) {
- node = fdt_node_offset_by_phandle(blob,
- phandle);
- if (!node) {
- debug("%s: could not find phandle\n",
- fdt_get_name(blob, src_node,
- NULL));
- goto err;
- }
- }
- if (cells_name) {
- count = fdtdec_get_int(blob, node, cells_name,
- -1);
- if (count == -1) {
- debug("%s: could not get %s for %s\n",
- fdt_get_name(blob, src_node,
- NULL),
- cells_name,
- fdt_get_name(blob, node,
- NULL));
- goto err;
- }
- } else {
- count = cell_count;
- }
- /*
- * Make sure that the arguments actually fit in the
- * remaining property data length
- */
- if (list + count > list_end) {
- debug("%s: arguments longer than property\n",
- fdt_get_name(blob, src_node, NULL));
- goto err;
- }
- }
- /*
- * All of the error cases above bail out of the loop, so at
- * this point, the parsing is successful. If the requested
- * index matches, then fill the out_args structure and return,
- * or return -ENOENT for an empty entry.
- */
- rc = -ENOENT;
- if (cur_index == index) {
- if (!phandle)
- goto err;
- if (out_args) {
- int i;
- if (count > MAX_PHANDLE_ARGS) {
- debug("%s: too many arguments %d\n",
- fdt_get_name(blob, src_node,
- NULL), count);
- count = MAX_PHANDLE_ARGS;
- }
- out_args->node = node;
- out_args->args_count = count;
- for (i = 0; i < count; i++) {
- out_args->args[i] =
- be32_to_cpup(list++);
- }
- }
- /* Found it! return success */
- return 0;
- }
- node = -1;
- list += count;
- cur_index++;
- }
- /*
- * Result will be one of:
- * -ENOENT : index is for empty phandle
- * -EINVAL : parsing error on data
- * [1..n] : Number of phandle (count mode; when index = -1)
- */
- rc = index < 0 ? cur_index : -ENOENT;
- err:
- return rc;
- }
- 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;
- }
- u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
- {
- u64 number = 0;
- while (cells--)
- number = (number << 32) | fdt32_to_cpu(*ptr++);
- return number;
- }
- int fdt_get_resource(const void *fdt, int node, const char *property,
- unsigned int index, struct fdt_resource *res)
- {
- const fdt32_t *ptr, *end;
- int na, ns, len, parent;
- unsigned int i = 0;
- parent = fdt_parent_offset(fdt, node);
- if (parent < 0)
- return parent;
- na = fdt_address_cells(fdt, parent);
- ns = fdt_size_cells(fdt, parent);
- ptr = fdt_getprop(fdt, node, property, &len);
- if (!ptr)
- return len;
- end = ptr + len / sizeof(*ptr);
- while (ptr + na + ns <= end) {
- if (i == index) {
- res->start = fdtdec_get_number(ptr, na);
- res->end = res->start;
- res->end += fdtdec_get_number(&ptr[na], ns) - 1;
- return 0;
- }
- ptr += na + ns;
- i++;
- }
- return -FDT_ERR_NOTFOUND;
- }
- int fdt_get_named_resource(const void *fdt, int node, const char *property,
- const char *prop_names, const char *name,
- struct fdt_resource *res)
- {
- int index;
- index = fdt_stringlist_search(fdt, node, prop_names, name);
- if (index < 0)
- return index;
- return fdt_get_resource(fdt, node, property, index, res);
- }
- static int decode_timing_property(const void *blob, int node, const char *name,
- struct timing_entry *result)
- {
- int length, ret = 0;
- const u32 *prop;
- prop = fdt_getprop(blob, node, name, &length);
- if (!prop) {
- debug("%s: could not find property %s\n",
- fdt_get_name(blob, node, NULL), name);
- return length;
- }
- if (length == sizeof(u32)) {
- result->typ = fdtdec_get_int(blob, node, name, 0);
- result->min = result->typ;
- result->max = result->typ;
- } else {
- ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
- }
- return ret;
- }
- int fdtdec_decode_display_timing(const void *blob, int parent, int index,
- struct display_timing *dt)
- {
- int i, node, timings_node;
- u32 val = 0;
- int ret = 0;
- timings_node = fdt_subnode_offset(blob, parent, "display-timings");
- if (timings_node < 0)
- return timings_node;
- for (i = 0, node = fdt_first_subnode(blob, timings_node);
- node > 0 && i != index;
- node = fdt_next_subnode(blob, node))
- i++;
- if (node < 0)
- return node;
- memset(dt, 0, sizeof(*dt));
- ret |= decode_timing_property(blob, node, "hback-porch",
- &dt->hback_porch);
- ret |= decode_timing_property(blob, node, "hfront-porch",
- &dt->hfront_porch);
- ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
- ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
- ret |= decode_timing_property(blob, node, "vback-porch",
- &dt->vback_porch);
- ret |= decode_timing_property(blob, node, "vfront-porch",
- &dt->vfront_porch);
- ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
- ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
- ret |= decode_timing_property(blob, node, "clock-frequency",
- &dt->pixelclock);
- dt->flags = 0;
- val = fdtdec_get_int(blob, node, "vsync-active", -1);
- if (val != -1) {
- dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
- DISPLAY_FLAGS_VSYNC_LOW;
- }
- val = fdtdec_get_int(blob, node, "hsync-active", -1);
- if (val != -1) {
- dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
- DISPLAY_FLAGS_HSYNC_LOW;
- }
- val = fdtdec_get_int(blob, node, "de-active", -1);
- if (val != -1) {
- dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
- DISPLAY_FLAGS_DE_LOW;
- }
- val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
- if (val != -1) {
- dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
- DISPLAY_FLAGS_PIXDATA_NEGEDGE;
- }
- if (fdtdec_get_bool(blob, node, "interlaced"))
- dt->flags |= DISPLAY_FLAGS_INTERLACED;
- if (fdtdec_get_bool(blob, node, "doublescan"))
- dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
- if (fdtdec_get_bool(blob, node, "doubleclk"))
- dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
- return ret;
- }
- int fdtdec_setup_mem_size_base_fdt(const void *blob)
- {
- int ret, mem;
- struct fdt_resource res;
- mem = fdt_path_offset(blob, "/memory");
- if (mem < 0) {
- debug("%s: Missing /memory node\n", __func__);
- return -EINVAL;
- }
- ret = fdt_get_resource(blob, mem, "reg", 0, &res);
- if (ret != 0) {
- debug("%s: Unable to decode first memory bank\n", __func__);
- return -EINVAL;
- }
- gd->ram_size = (phys_size_t)(res.end - res.start + 1);
- gd->ram_base = (unsigned long)res.start;
- debug("%s: Initial DRAM size %llx\n", __func__,
- (unsigned long long)gd->ram_size);
- return 0;
- }
- int fdtdec_setup_mem_size_base(void)
- {
- return fdtdec_setup_mem_size_base_fdt(gd->fdt_blob);
- }
- #if defined(CONFIG_NR_DRAM_BANKS)
- static int get_next_memory_node(const void *blob, int mem)
- {
- do {
- mem = fdt_node_offset_by_prop_value(blob, mem,
- "device_type", "memory", 7);
- } while (!fdtdec_get_is_enabled(blob, mem));
- return mem;
- }
- int fdtdec_setup_memory_banksize_fdt(const void *blob)
- {
- int bank, ret, mem, reg = 0;
- struct fdt_resource res;
- mem = get_next_memory_node(blob, -1);
- if (mem < 0) {
- debug("%s: Missing /memory node\n", __func__);
- return -EINVAL;
- }
- for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
- ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
- if (ret == -FDT_ERR_NOTFOUND) {
- reg = 0;
- mem = get_next_memory_node(blob, mem);
- if (mem == -FDT_ERR_NOTFOUND)
- break;
- ret = fdt_get_resource(blob, mem, "reg", reg++, &res);
- if (ret == -FDT_ERR_NOTFOUND)
- break;
- }
- if (ret != 0) {
- return -EINVAL;
- }
- gd->bd->bi_dram[bank].start = (phys_addr_t)res.start;
- gd->bd->bi_dram[bank].size =
- (phys_size_t)(res.end - res.start + 1);
- debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n",
- __func__, bank,
- (unsigned long long)gd->bd->bi_dram[bank].start,
- (unsigned long long)gd->bd->bi_dram[bank].size);
- }
- return 0;
- }
- int fdtdec_setup_memory_banksize(void)
- {
- return fdtdec_setup_memory_banksize_fdt(gd->fdt_blob);
- }
- #endif
- #if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
- # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\
- CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO)
- static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
- {
- size_t sz_out = CONFIG_VAL(MULTI_DTB_FIT_UNCOMPRESS_SZ);
- bool gzip = 0, lzo = 0;
- ulong sz_in = sz_src;
- void *dst;
- int rc;
- if (CONFIG_IS_ENABLED(GZIP))
- if (gzip_parse_header(src, sz_in) >= 0)
- gzip = 1;
- if (CONFIG_IS_ENABLED(LZO))
- if (!gzip && lzop_is_valid_header(src))
- lzo = 1;
- if (!gzip && !lzo)
- return -EBADMSG;
- if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) {
- dst = malloc(sz_out);
- if (!dst) {
- puts("uncompress_blob: Unable to allocate memory\n");
- return -ENOMEM;
- }
- } else {
- # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA)
- dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR);
- # else
- return -ENOTSUPP;
- # endif
- }
- if (CONFIG_IS_ENABLED(GZIP) && gzip)
- rc = gunzip(dst, sz_out, (u8 *)src, &sz_in);
- else if (CONFIG_IS_ENABLED(LZO) && lzo)
- rc = lzop_decompress(src, sz_in, dst, &sz_out);
- else
- hang();
- if (rc < 0) {
- /* not a valid compressed blob */
- puts("uncompress_blob: Unable to uncompress\n");
- if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC))
- free(dst);
- return -EBADMSG;
- }
- *dstp = dst;
- return 0;
- }
- # else
- static int uncompress_blob(const void *src, ulong sz_src, void **dstp)
- {
- *dstp = (void *)src;
- return 0;
- }
- # endif
- #endif
- #if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
- /*
- * For CONFIG_OF_SEPARATE, the board may optionally implement this to
- * provide and/or fixup the fdt.
- */
- __weak void *board_fdt_blob_setup(void)
- {
- void *fdt_blob = NULL;
- #ifdef CONFIG_SPL_BUILD
- /* FDT is at end of BSS unless it is in a different memory region */
- if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
- fdt_blob = (ulong *)&_image_binary_end;
- else
- fdt_blob = (ulong *)&__bss_end;
- #else
- /* FDT is at end of image */
- fdt_blob = (ulong *)&_end;
- #endif
- return fdt_blob;
- }
- #endif
- int fdtdec_set_ethernet_mac_address(void *fdt, const u8 *mac, size_t size)
- {
- const char *path;
- int offset, err;
- if (!is_valid_ethaddr(mac))
- return -EINVAL;
- path = fdt_get_alias(fdt, "ethernet");
- if (!path)
- return 0;
- debug("ethernet alias found: %s\n", path);
- offset = fdt_path_offset(fdt, path);
- if (offset < 0) {
- debug("ethernet alias points to absent node %s\n", path);
- return -ENOENT;
- }
- err = fdt_setprop_inplace(fdt, offset, "local-mac-address", mac, size);
- if (err < 0)
- return err;
- debug("MAC address: %pM\n", mac);
- return 0;
- }
- static int fdtdec_init_reserved_memory(void *blob)
- {
- int na, ns, node, err;
- fdt32_t value;
- /* inherit #address-cells and #size-cells from the root node */
- na = fdt_address_cells(blob, 0);
- ns = fdt_size_cells(blob, 0);
- node = fdt_add_subnode(blob, 0, "reserved-memory");
- if (node < 0)
- return node;
- err = fdt_setprop(blob, node, "ranges", NULL, 0);
- if (err < 0)
- return err;
- value = cpu_to_fdt32(ns);
- err = fdt_setprop(blob, node, "#size-cells", &value, sizeof(value));
- if (err < 0)
- return err;
- value = cpu_to_fdt32(na);
- err = fdt_setprop(blob, node, "#address-cells", &value, sizeof(value));
- if (err < 0)
- return err;
- return node;
- }
- int fdtdec_add_reserved_memory(void *blob, const char *basename,
- const struct fdt_memory *carveout,
- uint32_t *phandlep)
- {
- fdt32_t cells[4] = {}, *ptr = cells;
- uint32_t upper, lower, phandle;
- int parent, node, na, ns, err;
- fdt_size_t size;
- char name[64];
- /* create an empty /reserved-memory node if one doesn't exist */
- parent = fdt_path_offset(blob, "/reserved-memory");
- if (parent < 0) {
- parent = fdtdec_init_reserved_memory(blob);
- if (parent < 0)
- return parent;
- }
- /* only 1 or 2 #address-cells and #size-cells are supported */
- na = fdt_address_cells(blob, parent);
- if (na < 1 || na > 2)
- return -FDT_ERR_BADNCELLS;
- ns = fdt_size_cells(blob, parent);
- if (ns < 1 || ns > 2)
- return -FDT_ERR_BADNCELLS;
- /* find a matching node and return the phandle to that */
- fdt_for_each_subnode(node, blob, parent) {
- const char *name = fdt_get_name(blob, node, NULL);
- phys_addr_t addr, size;
- addr = fdtdec_get_addr_size(blob, node, "reg", &size);
- if (addr == FDT_ADDR_T_NONE) {
- debug("failed to read address/size for %s\n", name);
- continue;
- }
- if (addr == carveout->start && (addr + size - 1) ==
- carveout->end) {
- if (phandlep)
- *phandlep = fdt_get_phandle(blob, node);
- return 0;
- }
- }
- /*
- * Unpack the start address and generate the name of the new node
- * base on the basename and the unit-address.
- */
- upper = upper_32_bits(carveout->start);
- lower = lower_32_bits(carveout->start);
- if (na > 1 && upper > 0)
- snprintf(name, sizeof(name), "%s@%x,%x", basename, upper,
- lower);
- else {
- if (upper > 0) {
- debug("address %08x:%08x exceeds addressable space\n",
- upper, lower);
- return -FDT_ERR_BADVALUE;
- }
- snprintf(name, sizeof(name), "%s@%x", basename, lower);
- }
- node = fdt_add_subnode(blob, parent, name);
- if (node < 0)
- return node;
- if (phandlep) {
- err = fdt_generate_phandle(blob, &phandle);
- if (err < 0)
- return err;
- err = fdtdec_set_phandle(blob, node, phandle);
- if (err < 0)
- return err;
- }
- /* store one or two address cells */
- if (na > 1)
- *ptr++ = cpu_to_fdt32(upper);
- *ptr++ = cpu_to_fdt32(lower);
- /* store one or two size cells */
- size = carveout->end - carveout->start + 1;
- upper = upper_32_bits(size);
- lower = lower_32_bits(size);
- if (ns > 1)
- *ptr++ = cpu_to_fdt32(upper);
- *ptr++ = cpu_to_fdt32(lower);
- err = fdt_setprop(blob, node, "reg", cells, (na + ns) * sizeof(*cells));
- if (err < 0)
- return err;
- /* return the phandle for the new node for the caller to use */
- if (phandlep)
- *phandlep = phandle;
- return 0;
- }
- int fdtdec_get_carveout(const void *blob, const char *node, const char *name,
- unsigned int index, struct fdt_memory *carveout)
- {
- const fdt32_t *prop;
- uint32_t phandle;
- int offset, len;
- fdt_size_t size;
- offset = fdt_path_offset(blob, node);
- if (offset < 0)
- return offset;
- prop = fdt_getprop(blob, offset, name, &len);
- if (!prop) {
- debug("failed to get %s for %s\n", name, node);
- return -FDT_ERR_NOTFOUND;
- }
- if ((len % sizeof(phandle)) != 0) {
- debug("invalid phandle property\n");
- return -FDT_ERR_BADPHANDLE;
- }
- if (len < (sizeof(phandle) * (index + 1))) {
- debug("invalid phandle index\n");
- return -FDT_ERR_BADPHANDLE;
- }
- phandle = fdt32_to_cpu(prop[index]);
- offset = fdt_node_offset_by_phandle(blob, phandle);
- if (offset < 0) {
- debug("failed to find node for phandle %u\n", phandle);
- return offset;
- }
- carveout->start = fdtdec_get_addr_size_auto_noparent(blob, offset,
- "reg", 0, &size,
- true);
- if (carveout->start == FDT_ADDR_T_NONE) {
- debug("failed to read address/size from \"reg\" property\n");
- return -FDT_ERR_NOTFOUND;
- }
- carveout->end = carveout->start + size - 1;
- return 0;
- }
- int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name,
- unsigned int index, const char *name,
- const struct fdt_memory *carveout)
- {
- uint32_t phandle;
- int err, offset, len;
- fdt32_t value;
- void *prop;
- err = fdtdec_add_reserved_memory(blob, name, carveout, &phandle);
- if (err < 0) {
- debug("failed to add reserved memory: %d\n", err);
- return err;
- }
- offset = fdt_path_offset(blob, node);
- if (offset < 0) {
- debug("failed to find offset for node %s: %d\n", node, offset);
- return offset;
- }
- value = cpu_to_fdt32(phandle);
- if (!fdt_getprop(blob, offset, prop_name, &len)) {
- if (len == -FDT_ERR_NOTFOUND)
- len = 0;
- else
- return len;
- }
- if ((index + 1) * sizeof(value) > len) {
- err = fdt_setprop_placeholder(blob, offset, prop_name,
- (index + 1) * sizeof(value),
- &prop);
- if (err < 0) {
- debug("failed to resize reserved memory property: %s\n",
- fdt_strerror(err));
- return err;
- }
- }
- err = fdt_setprop_inplace_namelen_partial(blob, offset, prop_name,
- strlen(prop_name),
- index * sizeof(value),
- &value, sizeof(value));
- if (err < 0) {
- debug("failed to update %s property for node %s: %s\n",
- prop_name, node, fdt_strerror(err));
- return err;
- }
- return 0;
- }
- int fdtdec_setup(void)
- {
- #if CONFIG_IS_ENABLED(OF_CONTROL)
- # if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
- void *fdt_blob;
- # endif
- # ifdef CONFIG_OF_EMBED
- /* Get a pointer to the FDT */
- # ifdef CONFIG_SPL_BUILD
- gd->fdt_blob = __dtb_dt_spl_begin;
- # else
- gd->fdt_blob = __dtb_dt_begin;
- # endif
- # elif defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
- /* Allow the board to override the fdt address. */
- gd->fdt_blob = board_fdt_blob_setup();
- # elif defined(CONFIG_OF_HOSTFILE)
- if (sandbox_read_fdt_from_file()) {
- puts("Failed to read control FDT\n");
- return -1;
- }
- # elif defined(CONFIG_OF_PRIOR_STAGE)
- gd->fdt_blob = (void *)prior_stage_fdt_address;
- # endif
- # ifndef CONFIG_SPL_BUILD
- /* Allow the early environment to override the fdt address */
- gd->fdt_blob = map_sysmem
- (env_get_ulong("fdtcontroladdr", 16,
- (unsigned long)map_to_sysmem(gd->fdt_blob)), 0);
- # endif
- # if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
- /*
- * Try and uncompress the blob.
- * Unfortunately there is no way to know how big the input blob really
- * is. So let us set the maximum input size arbitrarily high. 16MB
- * ought to be more than enough for packed DTBs.
- */
- if (uncompress_blob(gd->fdt_blob, 0x1000000, &fdt_blob) == 0)
- gd->fdt_blob = fdt_blob;
- /*
- * Check if blob is a FIT images containings DTBs.
- * If so, pick the most relevant
- */
- fdt_blob = locate_dtb_in_fit(gd->fdt_blob);
- if (fdt_blob) {
- gd->multi_dtb_fit = gd->fdt_blob;
- gd->fdt_blob = fdt_blob;
- }
- # endif
- #endif
- return fdtdec_prepare_fdt();
- }
- #if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
- int fdtdec_resetup(int *rescan)
- {
- void *fdt_blob;
- /*
- * If the current DTB is part of a compressed FIT image,
- * try to locate the best match from the uncompressed
- * FIT image stillpresent there. Save the time and space
- * required to uncompress it again.
- */
- if (gd->multi_dtb_fit) {
- fdt_blob = locate_dtb_in_fit(gd->multi_dtb_fit);
- if (fdt_blob == gd->fdt_blob) {
- /*
- * The best match did not change. no need to tear down
- * the DM and rescan the fdt.
- */
- *rescan = 0;
- return 0;
- }
- *rescan = 1;
- gd->fdt_blob = fdt_blob;
- return fdtdec_prepare_fdt();
- }
- /*
- * If multi_dtb_fit is NULL, it means that blob appended to u-boot is
- * not a FIT image containings DTB, but a single DTB. There is no need
- * to teard down DM and rescan the DT in this case.
- */
- *rescan = 0;
- return 0;
- }
- #endif
- #ifdef CONFIG_NR_DRAM_BANKS
- int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id,
- phys_addr_t *basep, phys_size_t *sizep, bd_t *bd)
- {
- int addr_cells, size_cells;
- const u32 *cell, *end;
- u64 total_size, size, addr;
- int node, child;
- bool auto_size;
- int bank;
- int len;
- debug("%s: board_id=%d\n", __func__, board_id);
- if (!area)
- area = "/memory";
- node = fdt_path_offset(blob, area);
- if (node < 0) {
- debug("No %s node found\n", area);
- return -ENOENT;
- }
- cell = fdt_getprop(blob, node, "reg", &len);
- if (!cell) {
- debug("No reg property found\n");
- return -ENOENT;
- }
- addr_cells = fdt_address_cells(blob, node);
- size_cells = fdt_size_cells(blob, node);
- /* Check the board id and mask */
- for (child = fdt_first_subnode(blob, node);
- child >= 0;
- child = fdt_next_subnode(blob, child)) {
- int match_mask, match_value;
- match_mask = fdtdec_get_int(blob, child, "match-mask", -1);
- match_value = fdtdec_get_int(blob, child, "match-value", -1);
- if (match_value >= 0 &&
- ((board_id & match_mask) == match_value)) {
- /* Found matching mask */
- debug("Found matching mask %d\n", match_mask);
- node = child;
- cell = fdt_getprop(blob, node, "reg", &len);
- if (!cell) {
- debug("No memory-banks property found\n");
- return -EINVAL;
- }
- break;
- }
- }
- /* Note: if no matching subnode was found we use the parent node */
- if (bd) {
- memset(bd->bi_dram, '\0', sizeof(bd->bi_dram[0]) *
- CONFIG_NR_DRAM_BANKS);
- }
- auto_size = fdtdec_get_bool(blob, node, "auto-size");
- total_size = 0;
- end = cell + len / 4 - addr_cells - size_cells;
- debug("cell at %p, end %p\n", cell, end);
- for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
- if (cell > end)
- break;
- addr = 0;
- if (addr_cells == 2)
- addr += (u64)fdt32_to_cpu(*cell++) << 32UL;
- addr += fdt32_to_cpu(*cell++);
- if (bd)
- bd->bi_dram[bank].start = addr;
- if (basep && !bank)
- *basep = (phys_addr_t)addr;
- size = 0;
- if (size_cells == 2)
- size += (u64)fdt32_to_cpu(*cell++) << 32UL;
- size += fdt32_to_cpu(*cell++);
- if (auto_size) {
- u64 new_size;
- debug("Auto-sizing %llx, size %llx: ", addr, size);
- new_size = get_ram_size((long *)(uintptr_t)addr, size);
- if (new_size == size) {
- debug("OK\n");
- } else {
- debug("sized to %llx\n", new_size);
- size = new_size;
- }
- }
- if (bd)
- bd->bi_dram[bank].size = size;
- total_size += size;
- }
- debug("Memory size %llu\n", total_size);
- if (sizep)
- *sizep = (phys_size_t)total_size;
- return 0;
- }
- #endif /* CONFIG_NR_DRAM_BANKS */
- #endif /* !USE_HOSTCC */
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