diff options
Diffstat (limited to 'common/fdt_support.c')
| -rw-r--r-- | common/fdt_support.c | 183 |
1 files changed, 161 insertions, 22 deletions
diff --git a/common/fdt_support.c b/common/fdt_support.c index 175d59e..c67bb3d 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -44,6 +44,32 @@ 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); +} + int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force) { int nodeoffset; @@ -58,34 +84,23 @@ 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; @@ -95,7 +110,7 @@ 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"); + nodeoffset = fdt_path_offset (fdt, "/chosen"); /* * If we have a "chosen" node already the "force the writing" @@ -182,7 +197,7 @@ 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 +319,7 @@ 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 +363,128 @@ int fdt_bd_t(void *fdt) } #endif /* ifdef CONFIG_OF_HAS_BD_T */ +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); +} + +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 /* CONFIG_OF_LIBFDT */ |