diff options
author | Simon Glass <sjg@chromium.org> | 2017-05-18 20:09:08 -0600 |
---|---|---|
committer | Simon Glass <sjg@chromium.org> | 2017-06-01 07:03:08 -0600 |
commit | 19c8205e6887d5e47c7dac6cd85d0376411b5444 (patch) | |
tree | 88f5788dbe0ad8ef62df010d636b615ee1ec9dfe /drivers | |
parent | 45a26867e8158d0338ba5b99d21989a72d423209 (diff) |
dm: core: Scan the live tree when setting up driver model
When starting up driver model with a live tree we need to scan the tree
for devices. Add code to handle this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/core/root.c | 58 |
1 files changed, 54 insertions, 4 deletions
diff --git a/drivers/core/root.c b/drivers/core/root.c index 0c00a4e051..d691d6ff94 100644 --- a/drivers/core/root.c +++ b/drivers/core/root.c @@ -15,7 +15,10 @@ #include <dm/device.h> #include <dm/device-internal.h> #include <dm/lists.h> +#include <dm/of.h> +#include <dm/of_access.h> #include <dm/platdata.h> +#include <dm/read.h> #include <dm/root.h> #include <dm/uclass.h> #include <dm/util.h> @@ -147,7 +150,7 @@ void fix_devices(void) #endif -int dm_init(void) +int dm_init(bool of_live) { int ret; @@ -167,7 +170,12 @@ int dm_init(void) if (ret) return ret; #if CONFIG_IS_ENABLED(OF_CONTROL) - DM_ROOT_NON_CONST->node = offset_to_ofnode(0); +# if CONFIG_IS_ENABLED(OF_LIVE) + if (of_live) + DM_ROOT_NON_CONST->node = np_to_ofnode(gd->of_root); + else +#endif + DM_ROOT_NON_CONST->node = offset_to_ofnode(0); #endif ret = device_probe(DM_ROOT_NON_CONST); if (ret) @@ -206,6 +214,36 @@ int dm_scan_platdata(bool pre_reloc_only) return ret; } +#if CONFIG_IS_ENABLED(OF_LIVE) +static int dm_scan_fdt_live(struct udevice *parent, + const struct device_node *node_parent, + bool pre_reloc_only) +{ + struct device_node *np; + int ret = 0, err; + + for (np = node_parent->child; np; np = np->sibling) { + if (pre_reloc_only && + !of_find_property(np, "u-boot,dm-pre-reloc", NULL)) + continue; + if (!of_device_is_available(np)) { + dm_dbg(" - ignoring disabled device\n"); + continue; + } + err = lists_bind_fdt(parent, np_to_ofnode(np), NULL); + if (err && !ret) { + ret = err; + debug("%s: ret=%d\n", np->name, ret); + } + } + + if (ret) + dm_warn("Some drivers failed to bind\n"); + + return ret; +} +#endif /* CONFIG_IS_ENABLED(OF_LIVE) */ + #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) /** * dm_scan_fdt_node() - Scan the device tree and bind drivers for a node @@ -251,15 +289,27 @@ static int dm_scan_fdt_node(struct udevice *parent, const void *blob, int dm_scan_fdt_dev(struct udevice *dev) { - if (dev_of_offset(dev) == -1) + if (!dev_of_valid(dev)) return 0; +#if CONFIG_IS_ENABLED(OF_LIVE) + if (of_live_active()) + return dm_scan_fdt_live(dev, dev_np(dev), + gd->flags & GD_FLG_RELOC ? false : true); + else +#endif return dm_scan_fdt_node(dev, gd->fdt_blob, dev_of_offset(dev), gd->flags & GD_FLG_RELOC ? false : true); } int dm_scan_fdt(const void *blob, bool pre_reloc_only) { +#if CONFIG_IS_ENABLED(OF_LIVE) + if (of_live_active()) + return dm_scan_fdt_live(gd->dm_root, gd->of_root, + pre_reloc_only); + else +#endif return dm_scan_fdt_node(gd->dm_root, blob, 0, pre_reloc_only); } #endif @@ -273,7 +323,7 @@ int dm_init_and_scan(bool pre_reloc_only) { int ret; - ret = dm_init(); + ret = dm_init(IS_ENABLED(CONFIG_OF_LIVE)); if (ret) { debug("dm_init() failed: %d\n", ret); return ret; |