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-rw-r--r--common/fdt_support.c378
1 files changed, 322 insertions, 56 deletions
diff --git a/common/fdt_support.c b/common/fdt_support.c
index 175d59e..92f1c7f 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -24,13 +24,11 @@
#include <common.h>
#include <linux/ctype.h>
#include <linux/types.h>
-
-#ifdef CONFIG_OF_LIBFDT
-
#include <asm/global_data.h>
#include <fdt.h>
#include <libfdt.h>
#include <fdt_support.h>
+#include <exports.h>
/*
* Global data (for the gd->bd)
@@ -44,12 +42,76 @@ struct fdt_header *fdt;
/********************************************************************/
+/**
+ * fdt_find_and_setprop: Find a node and set it's property
+ *
+ * @fdt: ptr to device tree
+ * @node: path of node
+ * @prop: property name
+ * @val: ptr to new value
+ * @len: length of new property value
+ * @create: flag to create the property if it doesn't exist
+ *
+ * Convenience function to directly set a property given the path to the node.
+ */
+int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
+ const void *val, int len, int create)
+{
+ int nodeoff = fdt_path_offset(fdt, node);
+
+ if (nodeoff < 0)
+ return nodeoff;
+
+ if ((!create) && (fdt_get_property(fdt, nodeoff, prop, 0) == NULL))
+ return 0; /* create flag not set; so exit quietly */
+
+ return fdt_setprop(fdt, nodeoff, prop, val, len);
+}
+
+#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
+static int fdt_fixup_stdout(void *fdt, int choosenoff)
+{
+ int err = 0;
+#ifdef CONFIG_CONS_INDEX
+ int node;
+ char sername[9] = { 0 };
+ const char *path;
+
+ sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
+
+ err = node = fdt_path_offset(fdt, "/aliases");
+ if (node >= 0) {
+ int len;
+ path = fdt_getprop(fdt, node, sername, &len);
+ if (path) {
+ char *p = malloc(len);
+ err = -FDT_ERR_NOSPACE;
+ if (p) {
+ memcpy(p, path, len);
+ err = fdt_setprop(fdt, choosenoff,
+ "linux,stdout-path", p, len);
+ free(p);
+ }
+ } else {
+ err = len;
+ }
+ }
+#endif
+ if (err < 0)
+ printf("WARNING: could not set linux,stdout-path %s.\n",
+ fdt_strerror(err));
+
+ return err;
+}
+#endif
+
int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
{
int nodeoffset;
int err;
u32 tmp; /* used to set 32 bit integer properties */
char *str; /* used to set string properties */
+ const char *path;
err = fdt_check_header(fdt);
if (err < 0) {
@@ -58,34 +120,23 @@ int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
}
if (initrd_start && initrd_end) {
- struct fdt_reserve_entry re;
- int used;
- int total;
+ uint64_t addr, size;
+ int total = fdt_num_mem_rsv(fdt);
int j;
- err = fdt_num_reservemap(fdt, &used, &total);
- if (err < 0) {
- printf("fdt_chosen: %s\n", fdt_strerror(err));
- return err;
- }
- if (used >= total) {
- printf("WARNING: "
- "no room in the reserved map (%d of %d)\n",
- used, total);
- return -1;
- }
/*
* Look for an existing entry and update it. If we don't find
* the entry, we will j be the next available slot.
*/
- for (j = 0; j < used; j++) {
- err = fdt_get_reservemap(fdt, j, &re);
- if (re.address == initrd_start) {
+ for (j = 0; j < total; j++) {
+ err = fdt_get_mem_rsv(fdt, j, &addr, &size);
+ if (addr == initrd_start) {
+ fdt_del_mem_rsv(fdt, j);
break;
}
}
- err = fdt_replace_reservemap_entry(fdt, j,
- initrd_start, initrd_end - initrd_start + 1);
+
+ err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1);
if (err < 0) {
printf("fdt_chosen: %s\n", fdt_strerror(err));
return err;
@@ -95,17 +146,10 @@ int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
/*
* Find the "chosen" node.
*/
- nodeoffset = fdt_find_node_by_path (fdt, "/chosen");
-
- /*
- * If we have a "chosen" node already the "force the writing"
- * is not set, our job is done.
- */
- if ((nodeoffset >= 0) && !force)
- return 0;
+ nodeoffset = fdt_path_offset (fdt, "/chosen");
/*
- * No "chosen" node in the blob: create it.
+ * If there is no "chosen" node in the blob, create it.
*/
if (nodeoffset < 0) {
/*
@@ -120,37 +164,55 @@ int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
}
/*
- * Update pre-existing properties, create them if non-existant.
+ * Create /chosen properites that don't exist in the fdt.
+ * If the property exists, update it only if the "force" parameter
+ * is true.
*/
str = getenv("bootargs");
if (str != NULL) {
- err = fdt_setprop(fdt, nodeoffset,
- "bootargs", str, strlen(str)+1);
- if (err < 0)
- printf("WARNING: could not set bootargs %s.\n",
- fdt_strerror(err));
+ path = fdt_getprop(fdt, nodeoffset, "bootargs", NULL);
+ if ((path == NULL) || force) {
+ err = fdt_setprop(fdt, nodeoffset,
+ "bootargs", str, strlen(str)+1);
+ if (err < 0)
+ printf("WARNING: could not set bootargs %s.\n",
+ fdt_strerror(err));
+ }
}
if (initrd_start && initrd_end) {
- tmp = __cpu_to_be32(initrd_start);
- err = fdt_setprop(fdt, nodeoffset,
- "linux,initrd-start", &tmp, sizeof(tmp));
- if (err < 0)
- printf("WARNING: "
- "could not set linux,initrd-start %s.\n",
- fdt_strerror(err));
- tmp = __cpu_to_be32(initrd_end);
+ path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL);
+ if ((path == NULL) || force) {
+ tmp = __cpu_to_be32(initrd_start);
+ err = fdt_setprop(fdt, nodeoffset,
+ "linux,initrd-start", &tmp, sizeof(tmp));
+ if (err < 0)
+ printf("WARNING: "
+ "could not set linux,initrd-start %s.\n",
+ fdt_strerror(err));
+ tmp = __cpu_to_be32(initrd_end);
+ err = fdt_setprop(fdt, nodeoffset,
+ "linux,initrd-end", &tmp, sizeof(tmp));
+ if (err < 0)
+ printf("WARNING: could not set linux,initrd-end %s.\n",
+ fdt_strerror(err));
+ }
+ }
+
+#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
+ path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
+ if ((path == NULL) || force)
+ err = fdt_fixup_stdout(fdt, nodeoffset);
+#endif
+
+#ifdef OF_STDOUT_PATH
+ path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
+ if ((path == NULL) || force) {
err = fdt_setprop(fdt, nodeoffset,
- "linux,initrd-end", &tmp, sizeof(tmp));
+ "linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
if (err < 0)
- printf("WARNING: could not set linux,initrd-end %s.\n",
+ printf("WARNING: could not set linux,stdout-path %s.\n",
fdt_strerror(err));
}
-#ifdef OF_STDOUT_PATH
- err = fdt_setprop(fdt, nodeoffset,
- "linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
- if (err < 0)
- printf("WARNING: could not set linux,stdout-path %s.\n",
- fdt_strerror(err));
#endif
return err;
@@ -182,7 +244,7 @@ int fdt_env(void *fdt)
* See if we already have a "u-boot-env" node, delete it if so.
* Then create a new empty node.
*/
- nodeoffset = fdt_find_node_by_path (fdt, "/u-boot-env");
+ nodeoffset = fdt_path_offset (fdt, "/u-boot-env");
if (nodeoffset >= 0) {
err = fdt_del_node(fdt, nodeoffset);
if (err < 0) {
@@ -304,7 +366,7 @@ int fdt_bd_t(void *fdt)
* See if we already have a "bd_t" node, delete it if so.
* Then create a new empty node.
*/
- nodeoffset = fdt_find_node_by_path (fdt, "/bd_t");
+ nodeoffset = fdt_path_offset (fdt, "/bd_t");
if (nodeoffset >= 0) {
err = fdt_del_node(fdt, nodeoffset);
if (err < 0) {
@@ -348,4 +410,208 @@ int fdt_bd_t(void *fdt)
}
#endif /* ifdef CONFIG_OF_HAS_BD_T */
-#endif /* CONFIG_OF_LIBFDT */
+void do_fixup_by_path(void *fdt, const char *path, const char *prop,
+ const void *val, int len, int create)
+{
+#if defined(DEBUG)
+ int i;
+ debug("Updating property '%s/%s' = ", node, prop);
+ for (i = 0; i < len; i++)
+ debug(" %.2x", *(u8*)(val+i));
+ debug("\n");
+#endif
+ int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create);
+ if (rc)
+ printf("Unable to update property %s:%s, err=%s\n",
+ path, prop, fdt_strerror(rc));
+}
+
+void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
+ u32 val, int create)
+{
+ val = cpu_to_fdt32(val);
+ do_fixup_by_path(fdt, path, prop, &val, sizeof(val), create);
+}
+
+void do_fixup_by_prop(void *fdt,
+ const char *pname, const void *pval, int plen,
+ const char *prop, const void *val, int len,
+ int create)
+{
+ int off;
+#if defined(DEBUG)
+ int i;
+ debug("Updating property '%s/%s' = ", node, prop);
+ for (i = 0; i < len; i++)
+ debug(" %.2x", *(u8*)(val+i));
+ debug("\n");
+#endif
+ off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen);
+ while (off != -FDT_ERR_NOTFOUND) {
+ if (create || (fdt_get_property(fdt, off, prop, 0) != NULL))
+ fdt_setprop(fdt, off, prop, val, len);
+ off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen);
+ }
+}
+
+void do_fixup_by_prop_u32(void *fdt,
+ const char *pname, const void *pval, int plen,
+ const char *prop, u32 val, int create)
+{
+ val = cpu_to_fdt32(val);
+ do_fixup_by_prop(fdt, pname, pval, plen, prop, &val, 4, create);
+}
+
+void do_fixup_by_compat(void *fdt, const char *compat,
+ const char *prop, const void *val, int len, int create)
+{
+ int off = -1;
+#if defined(DEBUG)
+ int i;
+ debug("Updating property '%s/%s' = ", node, prop);
+ for (i = 0; i < len; i++)
+ debug(" %.2x", *(u8*)(val+i));
+ debug("\n");
+#endif
+ off = fdt_node_offset_by_compatible(fdt, -1, compat);
+ while (off != -FDT_ERR_NOTFOUND) {
+ if (create || (fdt_get_property(fdt, off, prop, 0) != 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,
+ const char *prop, u32 val, int create)
+{
+ val = cpu_to_fdt32(val);
+ do_fixup_by_compat(fdt, compat, prop, &val, 4, create);
+}
+
+int fdt_fixup_memory(void *blob, u64 start, u64 size)
+{
+ int err, nodeoffset, len = 0;
+ u8 tmp[16];
+ const u32 *addrcell, *sizecell;
+
+ err = fdt_check_header(blob);
+ if (err < 0) {
+ printf("%s: %s\n", __FUNCTION__, fdt_strerror(err));
+ return err;
+ }
+
+ /* update, or add and update /memory node */
+ nodeoffset = fdt_path_offset(blob, "/memory");
+ if (nodeoffset < 0) {
+ nodeoffset = fdt_add_subnode(blob, 0, "memory");
+ if (nodeoffset < 0)
+ printf("WARNING: could not create /memory: %s.\n",
+ fdt_strerror(nodeoffset));
+ return nodeoffset;
+ }
+ err = fdt_setprop(blob, nodeoffset, "device_type", "memory",
+ sizeof("memory"));
+ if (err < 0) {
+ printf("WARNING: could not set %s %s.\n", "device_type",
+ fdt_strerror(err));
+ return err;
+ }
+
+ addrcell = fdt_getprop(blob, 0, "#address-cells", NULL);
+ /* use shifts and mask to ensure endianness */
+ if ((addrcell) && (*addrcell == 2)) {
+ tmp[0] = (start >> 56) & 0xff;
+ tmp[1] = (start >> 48) & 0xff;
+ tmp[2] = (start >> 40) & 0xff;
+ tmp[3] = (start >> 32) & 0xff;
+ tmp[4] = (start >> 24) & 0xff;
+ tmp[5] = (start >> 16) & 0xff;
+ tmp[6] = (start >> 8) & 0xff;
+ tmp[7] = (start ) & 0xff;
+ len = 8;
+ } else {
+ tmp[0] = (start >> 24) & 0xff;
+ tmp[1] = (start >> 16) & 0xff;
+ tmp[2] = (start >> 8) & 0xff;
+ tmp[3] = (start ) & 0xff;
+ len = 4;
+ }
+
+ sizecell = fdt_getprop(blob, 0, "#size-cells", NULL);
+ /* use shifts and mask to ensure endianness */
+ if ((sizecell) && (*sizecell == 2)) {
+ tmp[0+len] = (size >> 56) & 0xff;
+ tmp[1+len] = (size >> 48) & 0xff;
+ tmp[2+len] = (size >> 40) & 0xff;
+ tmp[3+len] = (size >> 32) & 0xff;
+ tmp[4+len] = (size >> 24) & 0xff;
+ tmp[5+len] = (size >> 16) & 0xff;
+ tmp[6+len] = (size >> 8) & 0xff;
+ tmp[7+len] = (size ) & 0xff;
+ len += 8;
+ } else {
+ tmp[0+len] = (size >> 24) & 0xff;
+ tmp[1+len] = (size >> 16) & 0xff;
+ tmp[2+len] = (size >> 8) & 0xff;
+ tmp[3+len] = (size ) & 0xff;
+ len += 4;
+ }
+
+ err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
+ if (err < 0) {
+ printf("WARNING: could not set %s %s.\n",
+ "reg", fdt_strerror(err));
+ return err;
+ }
+ return 0;
+}
+
+#if defined(CONFIG_HAS_ETH0) || defined(CONFIG_HAS_ETH1) ||\
+ defined(CONFIG_HAS_ETH2) || defined(CONFIG_HAS_ETH3)
+
+void fdt_fixup_ethernet(void *fdt, bd_t *bd)
+{
+ int node;
+ const char *path;
+
+ node = fdt_path_offset(fdt, "/aliases");
+ if (node >= 0) {
+#if defined(CONFIG_HAS_ETH0)
+ path = fdt_getprop(fdt, node, "ethernet0", NULL);
+ if (path) {
+ do_fixup_by_path(fdt, path, "mac-address",
+ bd->bi_enetaddr, 6, 0);
+ do_fixup_by_path(fdt, path, "local-mac-address",
+ bd->bi_enetaddr, 6, 1);
+ }
+#endif
+#if defined(CONFIG_HAS_ETH1)
+ path = fdt_getprop(fdt, node, "ethernet1", NULL);
+ if (path) {
+ do_fixup_by_path(fdt, path, "mac-address",
+ bd->bi_enet1addr, 6, 0);
+ do_fixup_by_path(fdt, path, "local-mac-address",
+ bd->bi_enet1addr, 6, 1);
+ }
+#endif
+#if defined(CONFIG_HAS_ETH2)
+ path = fdt_getprop(fdt, node, "ethernet2", NULL);
+ if (path) {
+ do_fixup_by_path(fdt, path, "mac-address",
+ bd->bi_enet2addr, 6, 0);
+ do_fixup_by_path(fdt, path, "local-mac-address",
+ bd->bi_enet2addr, 6, 1);
+ }
+#endif
+#if defined(CONFIG_HAS_ETH3)
+ path = fdt_getprop(fdt, node, "ethernet3", NULL);
+ if (path) {
+ do_fixup_by_path(fdt, path, "mac-address",
+ bd->bi_enet3addr, 6, 0);
+ do_fixup_by_path(fdt, path, "local-mac-address",
+ bd->bi_enet3addr, 6, 1);
+ }
+#endif
+ }
+}
+#endif
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