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misc: fs_loader: Add support for initializing block device

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Firmware loader would encounter problem if the block device is accessed
before initializing it. This patch would adding the support of probing
block device and initializing block before the block device is accessed by
firmware loader.

Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Tien Fong Chee 2019-01-31 19:34:13 +08:00 committed by Tom Rini
parent dab8788a8c
commit db32a446f9
1 changed files with 23 additions and 0 deletions
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23
drivers/misc/fs_loader.c
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@ -252,6 +252,29 @@ static int fs_loader_ofdata_to_platdata(struct udevice *dev)
static int fs_loader_probe(struct udevice *dev)
{
#if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(BLK)
int ret;
struct device_platdata *plat = dev->platdata;
if (plat->phandlepart.phandle) {
ofnode node = ofnode_get_by_phandle(plat->phandlepart.phandle);
struct udevice *parent_dev = NULL;
ret = device_get_global_by_ofnode(node, &parent_dev);
if (!ret) {
struct udevice *dev;
ret = blk_get_from_parent(parent_dev, &dev);
if (ret) {
debug("fs_loader: No block device: %d\n",
ret);
return ret;
}
}
}
#endif
return 0;
};