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binman: Move selection of the binman node into a function 

Move this logic out of the main init function so it is available for
other purpose.

Use a different error when multiple-images is in use but no subnode is
available. This makes it easier to determine what is wrong.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2021-01-13 20:29:56 -07:00 committed by Tom Rini
parent ec5f101a37
commit 76b54d8ca1
1 changed files with 33 additions and 10 deletions
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43
lib/binman.c
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@ -30,6 +30,34 @@ struct binman_info {
static struct binman_info *binman;
/**
* find_image_node() - Find the top-level binman node
*
* Finds the binman node which can be used to load entries. The correct node
* depends on whether multiple-images is in use.
*
* @nodep: Returns the node found, on success
* @return 0 if OK, , -EINVAL if there is no /binman node, -ECHILD if multiple
* images are being used but the first image is not available
*/
static int find_image_node(ofnode *nodep)
{
ofnode node;
node = ofnode_path("/binman");
if (!ofnode_valid(node))
return log_msg_ret("binman node", -EINVAL);
if (ofnode_read_bool(node, "multiple-images")) {
node = ofnode_first_subnode(node);
if (!ofnode_valid(node))
return log_msg_ret("first image", -ECHILD);
}
*nodep = node;
return 0;
}
static int binman_entry_find_internal(ofnode node, const char *name,
struct binman_entry *entry)
{
@ -90,19 +118,14 @@ int binman_get_rom_offset(void)
int binman_init(void)
{
int ret;
binman = malloc(sizeof(struct binman_info));
if (!binman)
return log_msg_ret("space for binman", -ENOMEM);
binman->image = ofnode_path("/binman");
if (!ofnode_valid(binman->image))
return log_msg_ret("binman node", -EINVAL);
if (ofnode_read_bool(binman->image, "multiple-images")) {
ofnode node = ofnode_first_subnode(binman->image);
if (!ofnode_valid(node))
return log_msg_ret("first image", -ENOENT);
binman->image = node;
}
ret = find_image_node(&binman->image);
if (ret)
return log_msg_ret("node", -ENOENT);
binman_set_rom_offset(ROM_OFFSET_NONE);
return 0;