*/
#include <common.h>
+#include <abuf.h>
#include <env.h>
#include <log.h>
#include <mapmem.h>
#include <fdt_support.h>
#include <exports.h>
#include <fdtdec.h>
-
-DECLARE_GLOBAL_DATA_PTR;
+#include <version.h>
/**
* fdt_getprop_u32_default_node - Return a node's property or a default
return offset;
}
-/* rename to CONFIG_OF_STDOUT_PATH ? */
-#if defined(OF_STDOUT_PATH)
-static int fdt_fixup_stdout(void *fdt, int chosenoff)
-{
- return fdt_setprop(fdt, chosenoff, "linux,stdout-path",
- OF_STDOUT_PATH, strlen(OF_STDOUT_PATH) + 1);
-}
-#elif defined(CONFIG_OF_STDOUT_VIA_ALIAS) && defined(CONFIG_CONS_INDEX)
+#if defined(CONFIG_OF_STDOUT_VIA_ALIAS) && defined(CONFIG_CONS_INDEX)
static int fdt_fixup_stdout(void *fdt, int chosenoff)
{
int err;
return 0;
}
+/**
+ * board_fdt_chosen_bootargs - boards may override this function to use
+ * alternative kernel command line arguments
+ */
+__weak char *board_fdt_chosen_bootargs(void)
+{
+ return env_get("bootargs");
+}
+
int fdt_chosen(void *fdt)
{
+ struct abuf buf = {};
int nodeoffset;
int err;
char *str; /* used to set string properties */
if (nodeoffset < 0)
return nodeoffset;
- str = env_get("bootargs");
+ if (IS_ENABLED(CONFIG_BOARD_RNG_SEED) && !board_rng_seed(&buf)) {
+ err = fdt_setprop(fdt, nodeoffset, "rng-seed",
+ abuf_data(&buf), abuf_size(&buf));
+ abuf_uninit(&buf);
+ if (err < 0) {
+ printf("WARNING: could not set rng-seed %s.\n",
+ fdt_strerror(err));
+ return err;
+ }
+ }
+
+ str = board_fdt_chosen_bootargs();
+
if (str) {
err = fdt_setprop(fdt, nodeoffset, "bootargs", str,
strlen(str) + 1);
}
}
+ /* add u-boot version */
+ err = fdt_setprop(fdt, nodeoffset, "u-boot,version", PLAIN_VERSION,
+ strlen(PLAIN_VERSION) + 1);
+ if (err < 0) {
+ printf("WARNING: could not set u-boot,version %s.\n",
+ fdt_strerror(err));
+ return err;
+ }
+
return fdt_fixup_stdout(fdt, nodeoffset);
}
debug(" %.2x", *(u8*)(val+i));
debug("\n");
#endif
- off = fdt_node_offset_by_compatible(fdt, -1, compat);
- while (off != -FDT_ERR_NOTFOUND) {
+ fdt_for_each_node_by_compatible(off, fdt, -1, compat)
if (create || (fdt_get_property(fdt, off, prop, NULL) != 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,
#else
#define MEMORY_BANKS_MAX 4
#endif
+
+/**
+ * fdt_fixup_memory_banks - Update DT memory node
+ * @blob: Pointer to DT blob
+ * @start: Pointer to memory start addresses array
+ * @size: Pointer to memory sizes array
+ * @banks: Number of memory banks
+ *
+ * Return: 0 on success, negative value on failure
+ *
+ * Based on the passed number of banks and arrays, the function is able to
+ * update existing DT memory nodes to match run time detected/changed memory
+ * configuration. Implementation is handling one specific case with only one
+ * memory node where multiple tuples could be added/updated.
+ * The case where multiple memory nodes with a single tuple (base, size) are
+ * used, this function is only updating the first memory node without removing
+ * others.
+ */
int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks)
{
int err, nodeoffset;
for (j = 0; j < 6; j++) {
mac_addr[j] = tmp ?
- simple_strtoul(tmp, &end, 16) : 0;
+ hextoul(tmp, &end) : 0;
if (tmp)
tmp = (*end) ? end + 1 : end;
}
int fdt_record_loadable(void *blob, u32 index, const char *name,
uintptr_t load_addr, u32 size, uintptr_t entry_point,
- const char *type, const char *os)
+ const char *type, const char *os, const char *arch)
{
int err, node;
fdt_setprop_string(blob, node, "type", type);
if (os)
fdt_setprop_string(blob, node, "os", os);
+ if (arch)
+ fdt_setprop_string(blob, node, "arch", arch);
return node;
}
return actualsize;
}
+/**
+ * fdt_delete_disabled_nodes: Delete all nodes with status == "disabled"
+ *
+ * @blob: ptr to device tree
+ */
+int fdt_delete_disabled_nodes(void *blob)
+{
+ while (1) {
+ int ret, offset;
+
+ offset = fdt_node_offset_by_prop_value(blob, -1, "status",
+ "disabled", 9);
+ if (offset < 0)
+ break;
+
+ ret = fdt_del_node(blob, offset);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
#ifdef CONFIG_PCI
-#define CONFIG_SYS_PCI_NR_INBOUND_WIN 4
+#define CFG_SYS_PCI_NR_INBOUND_WIN 4
#define FDT_PCI_PREFETCH (0x40000000)
#define FDT_PCI_MEM32 (0x02000000)
int addrcell, sizecell, len, r;
u32 *dma_range;
/* sized based on pci addr cells, size-cells, & address-cells */
- u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN];
+ u32 dma_ranges[(3 + 2 + 2) * CFG_SYS_PCI_NR_INBOUND_WIN];
addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1);
sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1);
{
struct mtd_device *dev;
int i, idx;
- int noff;
+ int noff, parts;
bool inited = false;
for (i = 0; i < node_info_size; i++) {
idx = 0;
- noff = -1;
- while ((noff = fdt_node_offset_by_compatible(blob, noff,
- node_info[i].compat)) >= 0) {
+ fdt_for_each_node_by_compatible(noff, blob, -1,
+ node_info[i].compat) {
const char *prop;
prop = fdt_getprop(blob, noff, "status", NULL);
dev = device_find(node_info[i].type, idx++);
if (dev) {
- if (fdt_node_set_part_info(blob, noff, dev))
+ parts = fdt_subnode_offset(blob, noff,
+ "partitions");
+ if (parts < 0)
+ parts = noff;
+
+ if (fdt_node_set_part_info(blob, parts, dev))
return; /* return on error */
}
}
/* Max address size we deal with */
#define OF_MAX_ADDR_CELLS 4
#define OF_BAD_ADDR FDT_ADDR_T_NONE
-#define OF_CHECK_COUNTS(na, ns) (((na) > 0 && (na) <= OF_MAX_ADDR_CELLS) && \
- ((ns) > 0 || gd_size_cells_0()))
+#define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \
+ (ns) > 0)
/* Debug utility */
#ifdef DEBUG
node = parent;
parent = fdt_parent_offset(blob, node);
if (parent < 0) {
- printf("Found dma-ranges in root node, shoudln't happen\n");
+ printf("Found dma-ranges in root node, shouldn't happen\n");
ret = -EINVAL;
goto out;
}
int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
phys_addr_t compat_off)
{
- int len, off = fdt_node_offset_by_compatible(blob, -1, compat);
- while (off != -FDT_ERR_NOTFOUND) {
+ int len, off;
+
+ fdt_for_each_node_by_compatible(off, blob, -1, compat) {
const fdt32_t *reg = fdt_getprop(blob, off, "reg", &len);
- if (reg) {
- if (compat_off == fdt_translate_address(blob, off, reg))
- return off;
- }
- off = fdt_node_offset_by_compatible(blob, off, compat);
+ if (reg && compat_off == fdt_translate_address(blob, off, reg))
+ return off;
}
return -FDT_ERR_NOTFOUND;
}
+static int vnode_offset_by_pathf(void *blob, const char *fmt, va_list ap)
+{
+ char path[512];
+ int len;
+
+ len = vsnprintf(path, sizeof(path), fmt, ap);
+ if (len < 0 || len + 1 > sizeof(path))
+ return -FDT_ERR_NOSPACE;
+
+ return fdt_path_offset(blob, path);
+}
+
/**
- * fdt_alloc_phandle: Return next free phandle value
+ * fdt_node_offset_by_pathf: Find node offset by sprintf formatted path
*
* @blob: ptr to device tree
+ * @fmt: path format
+ * @ap: vsnprintf arguments
*/
-int fdt_alloc_phandle(void *blob)
+int fdt_node_offset_by_pathf(void *blob, const char *fmt, ...)
{
- int offset;
- uint32_t phandle = 0;
+ va_list ap;
+ int res;
- for (offset = fdt_next_node(blob, -1, NULL); offset >= 0;
- offset = fdt_next_node(blob, offset, NULL)) {
- phandle = max(phandle, fdt_get_phandle(blob, offset));
- }
+ va_start(ap, fmt);
+ res = vnode_offset_by_pathf(blob, fmt, ap);
+ va_end(ap);
- return phandle + 1;
+ return res;
}
/*
#endif
ret = fdt_setprop_cell(fdt, nodeoffset, "phandle", phandle);
- if (ret < 0)
- return ret;
-
- /*
- * For now, also set the deprecated "linux,phandle" property, so that we
- * don't break older kernels.
- */
- ret = fdt_setprop_cell(fdt, nodeoffset, "linux,phandle", phandle);
return ret;
}
/*
- * fdt_create_phandle: Create a phandle property for the given node
+ * fdt_create_phandle: Get or create a phandle property for the given node
*
* @fdt: ptr to device tree
* @nodeoffset: node to update
unsigned int fdt_create_phandle(void *fdt, int nodeoffset)
{
/* see if there is a phandle already */
- int phandle = fdt_get_phandle(fdt, nodeoffset);
+ uint32_t phandle = fdt_get_phandle(fdt, nodeoffset);
/* if we got 0, means no phandle so create one */
if (phandle == 0) {
int ret;
- phandle = fdt_alloc_phandle(fdt);
+ ret = fdt_generate_phandle(fdt, &phandle);
+ if (ret < 0) {
+ printf("Can't generate phandle: %s\n",
+ fdt_strerror(ret));
+ return 0;
+ }
+
ret = fdt_set_phandle(fdt, nodeoffset, phandle);
if (ret < 0) {
printf("Can't set phandle %u: %s\n", phandle,
return phandle;
}
+/**
+ * fdt_create_phandle_by_compatible: Get or create a phandle for first node with
+ * given compatible
+ *
+ * @fdt: ptr to device tree
+ * @compat: node's compatible string
+ */
+unsigned int fdt_create_phandle_by_compatible(void *fdt, const char *compat)
+{
+ int offset = fdt_node_offset_by_compatible(fdt, -1, compat);
+
+ if (offset < 0) {
+ printf("Can't find node with compatible \"%s\": %s\n", compat,
+ fdt_strerror(offset));
+ return 0;
+ }
+
+ return fdt_create_phandle(fdt, offset);
+}
+
+/**
+ * fdt_create_phandle_by_pathf: Get or create a phandle for node given by
+ * sprintf-formatted path
+ *
+ * @fdt: ptr to device tree
+ * @fmt, ...: path format string and arguments to pass to sprintf
+ */
+unsigned int fdt_create_phandle_by_pathf(void *fdt, const char *fmt, ...)
+{
+ va_list ap;
+ int offset;
+
+ va_start(ap, fmt);
+ offset = vnode_offset_by_pathf(fdt, fmt, ap);
+ va_end(ap);
+
+ if (offset < 0) {
+ printf("Can't find node by given path: %s\n",
+ fdt_strerror(offset));
+ return 0;
+ }
+
+ return fdt_create_phandle(fdt, offset);
+}
+
/*
* fdt_set_node_status: Set status for the given node
*
* @fdt: ptr to device tree
* @nodeoffset: node to update
- * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED,
- * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE
- * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE
+ * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, FDT_STATUS_FAIL
*/
-int fdt_set_node_status(void *fdt, int nodeoffset,
- enum fdt_status status, unsigned int error_code)
+int fdt_set_node_status(void *fdt, int nodeoffset, enum fdt_status status)
{
- char buf[16];
int ret = 0;
if (nodeoffset < 0)
case FDT_STATUS_FAIL:
ret = fdt_setprop_string(fdt, nodeoffset, "status", "fail");
break;
- case FDT_STATUS_FAIL_ERROR_CODE:
- sprintf(buf, "fail-%d", error_code);
- ret = fdt_setprop_string(fdt, nodeoffset, "status", buf);
- break;
default:
printf("Invalid fdt status: %x\n", status);
ret = -1;
*
* @fdt: ptr to device tree
* @alias: alias of node to update
- * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED,
- * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE
- * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE
+ * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, FDT_STATUS_FAIL
*/
int fdt_set_status_by_alias(void *fdt, const char* alias,
- enum fdt_status status, unsigned int error_code)
+ enum fdt_status status)
{
int offset = fdt_path_offset(fdt, alias);
- return fdt_set_node_status(fdt, offset, status, error_code);
+ return fdt_set_node_status(fdt, offset, status);
}
-#if defined(CONFIG_VIDEO) || defined(CONFIG_LCD)
-int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf)
+/**
+ * fdt_set_status_by_compatible: Set node status for first node with given
+ * compatible
+ *
+ * @fdt: ptr to device tree
+ * @compat: node's compatible string
+ * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, FDT_STATUS_FAIL
+ */
+int fdt_set_status_by_compatible(void *fdt, const char *compat,
+ enum fdt_status status)
{
- int noff;
- int ret;
+ int offset = fdt_node_offset_by_compatible(fdt, -1, compat);
- noff = fdt_node_offset_by_compatible(blob, -1, compat);
- if (noff != -FDT_ERR_NOTFOUND) {
- debug("%s: %s\n", fdt_get_name(blob, noff, 0), compat);
-add_edid:
- ret = fdt_setprop(blob, noff, "edid", edid_buf, 128);
- if (ret == -FDT_ERR_NOSPACE) {
- ret = fdt_increase_size(blob, 512);
- if (!ret)
- goto add_edid;
- else
- goto err_size;
- } else if (ret < 0) {
- printf("Can't add property: %s\n", fdt_strerror(ret));
- return ret;
- }
- }
- return 0;
-err_size:
- printf("Can't increase blob size: %s\n", fdt_strerror(ret));
- return ret;
+ if (offset < 0)
+ return offset;
+
+ return fdt_set_node_status(fdt, offset, status);
+}
+
+/**
+ * fdt_set_status_by_pathf: Set node status for node given by sprintf-formatted
+ * path
+ *
+ * @fdt: ptr to device tree
+ * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, FDT_STATUS_FAIL
+ * @fmt, ...: path format string and arguments to pass to sprintf
+ */
+int fdt_set_status_by_pathf(void *fdt, enum fdt_status status, const char *fmt,
+ ...)
+{
+ va_list ap;
+ int offset;
+
+ va_start(ap, fmt);
+ offset = vnode_offset_by_pathf(fdt, fmt, ap);
+ va_end(ap);
+
+ if (offset < 0)
+ return offset;
+
+ return fdt_set_node_status(fdt, offset, status);
}
-#endif
/*
* Verify the physical address of device tree node for a given alias
}
/*
- * Read a property of size <prop_len>. Currently only supports 1 or 2 cells.
+ * Read a property of size <prop_len>. Currently only supports 1 or 2 cells,
+ * or 3 cells specially for a PCI address.
*/
static int fdt_read_prop(const fdt32_t *prop, int prop_len, int cell_off,
uint64_t *val, int cells)
{
- const fdt32_t *prop32 = &prop[cell_off];
- const unaligned_fdt64_t *prop64 = (const fdt64_t *)&prop[cell_off];
+ const fdt32_t *prop32;
+ const unaligned_fdt64_t *prop64;
if ((cell_off + cells) > prop_len)
return -FDT_ERR_NOSPACE;
+ prop32 = &prop[cell_off];
+
+ /*
+ * Special handling for PCI address in PCI bus <ranges>
+ *
+ * PCI child address is made up of 3 cells. Advance the cell offset
+ * by 1 so that the PCI child address can be correctly read.
+ */
+ if (cells == 3)
+ cell_off += 1;
+ prop64 = (const fdt64_t *)&prop[cell_off];
+
switch (cells) {
case 1:
*val = fdt32_to_cpu(*prop32);
break;
case 2:
+ case 3:
*val = fdt64_to_cpu(*prop64);
break;
default:
return err;
}
#endif
+
+/**
+ * fdt_valid() - Check if an FDT is valid. If not, change it to NULL
+ *
+ * @blobp: Pointer to FDT pointer
+ * Return: 1 if OK, 0 if bad (in which case *blobp is set to NULL)
+ */
+int fdt_valid(struct fdt_header **blobp)
+{
+ const void *blob = *blobp;
+ int err;
+
+ if (!blob) {
+ printf("The address of the fdt is invalid (NULL).\n");
+ return 0;
+ }
+
+ err = fdt_check_header(blob);
+ if (err == 0)
+ return 1; /* valid */
+
+ if (err < 0) {
+ printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
+ /*
+ * Be more informative on bad version.
+ */
+ if (err == -FDT_ERR_BADVERSION) {
+ if (fdt_version(blob) <
+ FDT_FIRST_SUPPORTED_VERSION) {
+ printf(" - too old, fdt %d < %d",
+ fdt_version(blob),
+ FDT_FIRST_SUPPORTED_VERSION);
+ }
+ if (fdt_last_comp_version(blob) >
+ FDT_LAST_SUPPORTED_VERSION) {
+ printf(" - too new, fdt %d > %d",
+ fdt_version(blob),
+ FDT_LAST_SUPPORTED_VERSION);
+ }
+ }
+ printf("\n");
+ *blobp = NULL;
+ return 0;
+ }
+ return 1;
+}
projects / platform / kernel / u-boot.git / blobdiff