binman: Allow reading entries from a subnode
Some images may have multiple copies of the same thing, e.g. two versions of the read/write U-Boots. It is necessary to read data from one or other of these under selection of the verified-boot logic. Add a function to select the subnode to use. Signed-off-by: Simon Glass <sjg@chromium.org>
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@ -70,6 +70,20 @@ int binman_entry_find(const char *name, struct binman_entry *entry);
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*/
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*/
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ofnode binman_section_find_node(const char *name);
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ofnode binman_section_find_node(const char *name);
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/**
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* binman_select_subnode() - Select a subnode to use to find entries
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*
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* Normally binman selects the top-level node for future entry requests, such as
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* binman_entry_find(). This function allows a subnode to be chosen instead.
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*
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* @name: Name of subnode, typically a section. This must be in the top-level
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* binman node
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* @return 0 if OK, -EINVAL if there is no /binman node, -ECHILD if multiple
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* images are being used but the first image is not available, -ENOENT if
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* the requested subnode cannot be found
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*/
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int binman_select_subnode(const char *name);
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/**
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/**
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* binman_init() - Set up the binman symbol information
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* binman_init() - Set up the binman symbol information
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*
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*
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18
lib/binman.c
18
lib/binman.c
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@ -116,6 +116,24 @@ int binman_get_rom_offset(void)
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return binman->rom_offset;
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return binman->rom_offset;
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}
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}
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int binman_select_subnode(const char *name)
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{
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ofnode node;
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int ret;
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ret = find_image_node(&node);
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if (ret)
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return log_msg_ret("main", -ENOENT);
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node = ofnode_find_subnode(node, name);
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if (!ofnode_valid(node))
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return log_msg_ret("node", -ENOENT);
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binman->image = node;
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log_debug("binman: Selected image subnode '%s'\n",
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ofnode_get_name(binman->image));
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return 0;
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}
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int binman_init(void)
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int binman_init(void)
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{
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{
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int ret;
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int ret;
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