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-rw-r--r--common/fdt_support.c135
1 files changed, 86 insertions, 49 deletions
diff --git a/common/fdt_support.c b/common/fdt_support.c
index 3f641566b97..8266bca7d64 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -8,6 +8,7 @@
*/
#include <common.h>
+#include <inttypes.h>
#include <stdio_dev.h>
#include <linux/ctype.h>
#include <linux/types.h>
@@ -16,22 +17,6 @@
#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;
-}
-
/**
* fdt_getprop_u32_default_node - Return a node's property or a default
*
@@ -113,7 +98,8 @@ int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
}
/**
- * 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
@@ -121,8 +107,7 @@ int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
* 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;
@@ -246,7 +231,7 @@ int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end)
return err;
}
- is_u64 = (get_cells_len(fdt, "#address-cells") == 8);
+ is_u64 = (fdt_address_cells(fdt, 0) == 2);
err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-start",
(uint64_t)initrd_start, is_u64);
@@ -382,26 +367,26 @@ void do_fixup_by_compat_u32(void *fdt, const char *compat,
/*
* fdt_pack_reg - pack address and size array into the "reg"-suitable stream
*/
-static int fdt_pack_reg(const void *fdt, void *buf, uint64_t *address,
- uint64_t *size, int n)
+static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size,
+ int n)
{
int i;
- int address_len = get_cells_len(fdt, "#address-cells");
- int size_len = get_cells_len(fdt, "#size-cells");
+ 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_len == 8)
+ if (address_cells == 2)
*(fdt64_t *)p = cpu_to_fdt64(address[i]);
else
*(fdt32_t *)p = cpu_to_fdt32(address[i]);
- p += address_len;
+ p += 4 * address_cells;
- if (size_len == 8)
+ if (size_cells == 2)
*(fdt64_t *)p = cpu_to_fdt64(size[i]);
else
*(fdt32_t *)p = cpu_to_fdt32(size[i]);
- p += size_len;
+ p += 4 * size_cells;
}
return p - (char *)buf;
@@ -930,8 +915,6 @@ void fdt_del_node_and_alias(void *blob, const char *alias)
fdt_delprop(blob, off, alias);
}
-#define PRu64 "%llx"
-
/* Max address size we deal with */
#define OF_MAX_ADDR_CELLS 4
#define OF_BAD_ADDR ((u64)-1)
@@ -968,13 +951,8 @@ void of_bus_default_count_cells(void *blob, int parentoffset,
{
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);
@@ -994,8 +972,8 @@ static u64 of_bus_default_map(fdt32_t *addr, const fdt32_t *range,
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;
@@ -1073,7 +1051,7 @@ static int of_translate_one(void * blob, int parent, struct of_bus *bus,
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);
@@ -1199,7 +1177,8 @@ int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
*/
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)) {
@@ -1401,9 +1380,9 @@ int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr)
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;
}
@@ -1419,11 +1398,7 @@ u64 fdt_get_base_address(void *fdt, int node)
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);
@@ -1523,3 +1498,65 @@ int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr,
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@%llx", 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;
+}
generated by cgit v1.2.3 (git 2.0.4) at 2025-09-23 17:25:50 +0000