*/
#include <common.h>
+#include <inttypes.h>
#include <stdio_dev.h>
#include <linux/ctype.h>
#include <linux/types.h>
#include <fdt_support.h>
#include <exports.h>
-/*
- * Get cells len in bytes
- * if #NNNN-cells property is 2 then len is 8
- * otherwise len is 4
- */
-static int get_cells_len(const void *fdt, const char *nr_cells_name)
-{
- const fdt32_t *cell;
-
- cell = fdt_getprop(fdt, 0, nr_cells_name, NULL);
- if (cell && fdt32_to_cpu(*cell) == 2)
- return 8;
-
- return 4;
-}
-
-/*
- * Write a 4 or 8 byte big endian cell
- */
-static void write_cell(u8 *addr, u64 val, int size)
-{
- int shift = (size - 1) * 8;
- while (size-- > 0) {
- *addr++ = (val >> shift) & 0xff;
- shift -= 8;
- }
-}
-
/**
* fdt_getprop_u32_default_node - Return a node's property or a default
*
}
/**
- * fdt_find_or_add_subnode - find or possibly add a subnode of a given node
+ * fdt_find_or_add_subnode() - find or possibly add a subnode of a given node
+ *
* @fdt: pointer to the device tree blob
* @parentoffset: structure block offset of a node
* @name: name of the subnode to locate
* fdt_subnode_offset() finds a subnode of the node with a given name.
* If the subnode does not exist, it will be created.
*/
-static int fdt_find_or_add_subnode(void *fdt, int parentoffset,
- const char *name)
+int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name)
{
int offset;
}
#endif
+static inline int fdt_setprop_uxx(void *fdt, int nodeoffset, const char *name,
+ uint64_t val, int is_u64)
+{
+ if (is_u64)
+ return fdt_setprop_u64(fdt, nodeoffset, name, val);
+ else
+ return fdt_setprop_u32(fdt, nodeoffset, name, (uint32_t)val);
+}
+
+int fdt_root(void *fdt)
+{
+ char *serial;
+ int err;
+
+ err = fdt_check_header(fdt);
+ if (err < 0) {
+ printf("fdt_root: %s\n", fdt_strerror(err));
+ return err;
+ }
+
+ serial = getenv("serial#");
+ if (serial) {
+ err = fdt_setprop(fdt, 0, "serial-number", serial,
+ strlen(serial) + 1);
+
+ if (err < 0) {
+ printf("WARNING: could not set serial-number %s.\n",
+ fdt_strerror(err));
+ return err;
+ }
+ }
+
+ return 0;
+}
+
int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end)
{
- int nodeoffset, addr_cell_len;
+ int nodeoffset;
int err, j, total;
- fdt64_t tmp;
+ int is_u64;
uint64_t addr, size;
+ /* just return if the size of initrd is zero */
+ if (initrd_start == initrd_end)
+ return 0;
+
/* find or create "/chosen" node. */
nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen");
if (nodeoffset < 0)
return nodeoffset;
- /* just return if initrd_start/end aren't valid */
- if ((initrd_start == 0) || (initrd_end == 0))
- return 0;
-
total = fdt_num_mem_rsv(fdt);
/*
return err;
}
- addr_cell_len = get_cells_len(fdt, "#address-cells");
+ is_u64 = (fdt_address_cells(fdt, 0) == 2);
+
+ err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-start",
+ (uint64_t)initrd_start, is_u64);
- write_cell((u8 *)&tmp, initrd_start, addr_cell_len);
- err = fdt_setprop(fdt, nodeoffset,
- "linux,initrd-start", &tmp, addr_cell_len);
if (err < 0) {
printf("WARNING: could not set linux,initrd-start %s.\n",
fdt_strerror(err));
return err;
}
- write_cell((u8 *)&tmp, initrd_end, addr_cell_len);
- err = fdt_setprop(fdt, nodeoffset,
- "linux,initrd-end", &tmp, addr_cell_len);
+
+ err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-end",
+ (uint64_t)initrd_end, is_u64);
+
if (err < 0) {
printf("WARNING: could not set linux,initrd-end %s.\n",
fdt_strerror(err));
do_fixup_by_compat(fdt, compat, prop, &tmp, 4, create);
}
+/*
+ * fdt_pack_reg - pack address and size array into the "reg"-suitable stream
+ */
+static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size,
+ int n)
+{
+ int i;
+ int address_cells = fdt_address_cells(fdt, 0);
+ int size_cells = fdt_size_cells(fdt, 0);
+ char *p = buf;
+
+ for (i = 0; i < n; i++) {
+ if (address_cells == 2)
+ *(fdt64_t *)p = cpu_to_fdt64(address[i]);
+ else
+ *(fdt32_t *)p = cpu_to_fdt32(address[i]);
+ p += 4 * address_cells;
+
+ if (size_cells == 2)
+ *(fdt64_t *)p = cpu_to_fdt64(size[i]);
+ else
+ *(fdt32_t *)p = cpu_to_fdt32(size[i]);
+ p += 4 * size_cells;
+ }
+
+ return p - (char *)buf;
+}
+
#ifdef CONFIG_NR_DRAM_BANKS
#define MEMORY_BANKS_MAX CONFIG_NR_DRAM_BANKS
#else
int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks)
{
int err, nodeoffset;
- int addr_cell_len, size_cell_len, len;
+ int len;
u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */
- int bank;
if (banks > MEMORY_BANKS_MAX) {
printf("%s: num banks %d exceeds hardcoded limit %d."
return err;
}
- addr_cell_len = get_cells_len(blob, "#address-cells");
- size_cell_len = get_cells_len(blob, "#size-cells");
-
- for (bank = 0, len = 0; bank < banks; bank++) {
- write_cell(tmp + len, start[bank], addr_cell_len);
- len += addr_cell_len;
+ if (!banks)
+ return 0;
- write_cell(tmp + len, size[bank], size_cell_len);
- len += size_cell_len;
- }
+ len = fdt_pack_reg(blob, tmp, start, size, banks);
err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
if (err < 0) {
}
/* Resize the fdt to its actual size + a bit of padding */
-int fdt_resize(void *blob)
+int fdt_shrink_to_minimum(void *blob)
{
int i;
uint64_t addr, size;
ret = fdt_add_mem_rsv(blob, (uintptr_t)blob, actualsize);
if (ret < 0)
return ret;
-
+ if (getenv("fdtsize"))
+ setenv_hex("fdtsize", actualsize);
return actualsize;
}
unsigned int r1;
};
-int fdt_del_subnodes(const void *blob, int parent_offset)
+static int fdt_del_subnodes(const void *blob, int parent_offset)
{
int off, ndepth;
int ret;
for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth);
(off >= 0) && (ndepth > 0);
off = fdt_next_node(blob, off, &ndepth)) {
- if (ndepth == 1) {
- debug("delete %s: offset: %x\n",
- fdt_get_name(blob, off, 0), off);
- ret = fdt_del_node((void *)blob, off);
- if (ret < 0) {
- printf("Can't delete node: %s\n",
- fdt_strerror(ret));
- return ret;
- } else {
- ndepth = 0;
- off = parent_offset;
- }
+ if (ndepth < 0)
+ break;
+ else if (ndepth != 1)
+ continue;
+ else if (fdt_getprop(blob, off, "compatible", NULL))
+ continue;
+ debug("delete %s: offset: %x\n",
+ fdt_get_name(blob, off, 0), off);
+ ret = fdt_del_node((void *)blob, off);
+ if (ret < 0) {
+ printf("Can't delete node: %s\n",
+ fdt_strerror(ret));
+ return ret;
+ } else {
+ ndepth = 0;
+ off = parent_offset;
}
}
return 0;
{
const void *prop;
int ndepth = 0;
- int off;
+ int off = parent_offset;
int ret;
- off = fdt_next_node(blob, parent_offset, &ndepth);
- if (off > 0 && ndepth == 1) {
+ while ((off = fdt_next_node(blob, off, &ndepth)) > 0) {
+ if (ndepth < 0)
+ break;
+ else if (ndepth != 1)
+ continue;
+ else if (fdt_getprop(blob, off, "compatible", NULL))
+ continue;
prop = fdt_getprop(blob, off, "label", NULL);
if (prop == NULL) {
/*
struct list_head *pentry;
struct part_info *part;
struct reg_cell cell;
- int off, ndepth = 0;
+ int off = parent_offset, ndepth = 0;
int part_num, ret;
char buf[64];
* Check if it is nand {}; subnode, adjust
* the offset in this case
*/
- off = fdt_next_node(blob, parent_offset, &ndepth);
- if (off > 0 && ndepth == 1)
+ while ((off = fdt_next_node(blob, off, &ndepth)) > 0) {
+ if (ndepth < 0)
+ break;
+ else if (ndepth != 1)
+ continue;
+ else if (fdt_getprop(blob, off, "compatible", NULL))
+ continue;
parent_offset = off;
-
+ break;
+ }
part_num = 0;
list_for_each_prev(pentry, &dev->parts) {
int newoff;
fdt_delprop(blob, off, alias);
}
-/* Helper to read a big number; size is in cells (not bytes) */
-static inline u64 of_read_number(const fdt32_t *cell, int size)
-{
- u64 r = 0;
- while (size--)
- r = (r << 32) | fdt32_to_cpu(*(cell++));
- return r;
-}
-
-#define PRu64 "%llx"
-
/* Max address size we deal with */
#define OF_MAX_ADDR_CELLS 4
#define OF_BAD_ADDR ((u64)-1)
};
/* Default translator (generic bus) */
-static void of_bus_default_count_cells(void *blob, int parentoffset,
+void of_bus_default_count_cells(void *blob, int parentoffset,
int *addrc, int *sizec)
{
const fdt32_t *prop;
- if (addrc) {
- prop = fdt_getprop(blob, parentoffset, "#address-cells", NULL);
- if (prop)
- *addrc = be32_to_cpup(prop);
- else
- *addrc = 2;
- }
+ if (addrc)
+ *addrc = fdt_address_cells(blob, parentoffset);
if (sizec) {
prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL);
s = of_read_number(range + na + pna, ns);
da = of_read_number(addr, na);
- debug("OF: default map, cp="PRu64", s="PRu64", da="PRu64"\n",
- cp, s, da);
+ debug("OF: default map, cp=%" PRIu64 ", s=%" PRIu64
+ ", da=%" PRIu64 "\n", cp, s, da);
if (da < cp || da >= (cp + s))
return OF_BAD_ADDR;
finish:
of_dump_addr("OF: parent translation for:", addr, pna);
- debug("OF: with offset: "PRu64"\n", offset);
+ debug("OF: with offset: %" PRIu64 "\n", offset);
/* Translate it into parent bus space */
return pbus->translate(addr, offset, pna);
goto bail;
bus = &of_busses[0];
- /* Cound address cells & copy address locally */
+ /* Count address cells & copy address locally */
bus->count_cells(blob, parent, &na, &ns);
if (!OF_CHECK_COUNTS(na, ns)) {
printf("%s: Bad cell count for %s\n", __FUNCTION__,
*/
int fdt_alloc_phandle(void *blob)
{
- int offset, phandle = 0;
+ int offset;
+ uint32_t phandle = 0;
for (offset = fdt_next_node(blob, -1, NULL); offset >= 0;
offset = fdt_next_node(blob, offset, NULL)) {
dt_addr = fdt_translate_address(fdt, node, reg);
if (addr != dt_addr) {
- printf("Warning: U-Boot configured device %s at address %llx,\n"
- " but the device tree has it address %llx.\n",
- alias, addr, dt_addr);
+ printf("Warning: U-Boot configured device %s at address %"
+ PRIx64 ",\n but the device tree has it address %"
+ PRIx64 ".\n", alias, addr, dt_addr);
return 0;
}
u32 naddr;
const fdt32_t *prop;
- prop = fdt_getprop(fdt, node, "#address-cells", &size);
- if (prop && size == 4)
- naddr = be32_to_cpup(prop);
- else
- naddr = 2;
+ naddr = fdt_address_cells(fdt, node);
prop = fdt_getprop(fdt, node, "ranges", &size);
return 0;
}
+
+/**
+ * fdt_setup_simplefb_node - Fill and enable a simplefb node
+ *
+ * @fdt: ptr to device tree
+ * @node: offset of the simplefb node
+ * @base_address: framebuffer base address
+ * @width: width in pixels
+ * @height: height in pixels
+ * @stride: bytes per line
+ * @format: pixel format string
+ *
+ * Convenience function to fill and enable a simplefb node.
+ */
+int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width,
+ u32 height, u32 stride, const char *format)
+{
+ char name[32];
+ fdt32_t cells[4];
+ int i, addrc, sizec, ret;
+
+ of_bus_default_count_cells(fdt, fdt_parent_offset(fdt, node),
+ &addrc, &sizec);
+ i = 0;
+ if (addrc == 2)
+ cells[i++] = cpu_to_fdt32(base_address >> 32);
+ cells[i++] = cpu_to_fdt32(base_address);
+ if (sizec == 2)
+ cells[i++] = 0;
+ cells[i++] = cpu_to_fdt32(height * stride);
+
+ ret = fdt_setprop(fdt, node, "reg", cells, sizeof(cells[0]) * i);
+ if (ret < 0)
+ return ret;
+
+ snprintf(name, sizeof(name), "framebuffer@%" PRIx64, base_address);
+ ret = fdt_set_name(fdt, node, name);
+ if (ret < 0)
+ return ret;
+
+ ret = fdt_setprop_u32(fdt, node, "width", width);
+ if (ret < 0)
+ return ret;
+
+ ret = fdt_setprop_u32(fdt, node, "height", height);
+ if (ret < 0)
+ return ret;
+
+ ret = fdt_setprop_u32(fdt, node, "stride", stride);
+ if (ret < 0)
+ return ret;
+
+ ret = fdt_setprop_string(fdt, node, "format", format);
+ if (ret < 0)
+ return ret;
+
+ ret = fdt_setprop_string(fdt, node, "status", "okay");
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+/*
+ * Update native-mode in display-timings from display environment variable.
+ * The node to update are specified by path.
+ */
+int fdt_fixup_display(void *blob, const char *path, const char *display)
+{
+ int off, toff;
+
+ if (!display || !path)
+ return -FDT_ERR_NOTFOUND;
+
+ toff = fdt_path_offset(blob, path);
+ if (toff >= 0)
+ toff = fdt_subnode_offset(blob, toff, "display-timings");
+ if (toff < 0)
+ return toff;
+
+ for (off = fdt_first_subnode(blob, toff);
+ off >= 0;
+ off = fdt_next_subnode(blob, off)) {
+ uint32_t h = fdt_get_phandle(blob, off);
+ debug("%s:0x%x\n", fdt_get_name(blob, off, NULL),
+ fdt32_to_cpu(h));
+ if (strcasecmp(fdt_get_name(blob, off, NULL), display) == 0)
+ return fdt_setprop_u32(blob, toff, "native-mode", h);
+ }
+ return toff;
+}
projects / karo-tx-uboot.git / blobdiff