From: Bin Meng Date: Thu, 11 Oct 2018 05:06:58 +0000 (-0700) Subject: dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in lists_bind_fdt() X-Git-Url: http://git.dujemihanovic.xyz/html/index.html?a=commitdiff_plain;h=8d773c4ab3f77a5a6ceed974d00083a312454660;p=u-boot.git dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in lists_bind_fdt() Currently the comments of several APIs (eg: dm_init_and_scan()) say: @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC flag. If false bind all drivers. The 'Pre-Relocation Support' chapter in doc/driver-model/README.txt documents the same that both device tree properties and driver flag are supported. However the implementation only checks these special device tree properties without checking the driver flag at all. This updates lists_bind_fdt() to consider both scenarios. Signed-off-by: Bin Meng Reviewed-by: Simon Glass Squashed in http://patchwork.ozlabs.org/patch/996473/ : Signed-off-by: Simon Glass --- diff --git a/drivers/core/device.c b/drivers/core/device.c index 5176aa3f86..47a697f3e5 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -834,5 +834,5 @@ int dev_enable_by_path(const char *path) if (ret) return ret; - return lists_bind_fdt(parent, node, NULL); + return lists_bind_fdt(parent, node, NULL, false); } diff --git a/drivers/core/lists.c b/drivers/core/lists.c index a1677269d8..a1f828463e 100644 --- a/drivers/core/lists.c +++ b/drivers/core/lists.c @@ -122,7 +122,8 @@ static int driver_check_compatible(const struct udevice_id *of_match, return -ENOENT; } -int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp) +int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp, + bool pre_reloc_only) { struct driver *driver = ll_entry_start(struct driver, driver); const int n_ents = ll_entry_count(struct driver, driver); @@ -171,6 +172,12 @@ int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp) if (entry == driver + n_ents) continue; + if (pre_reloc_only) { + if (!dm_ofnode_pre_reloc(node) && + !(entry->flags & DM_FLAG_PRE_RELOC)) + return 0; + } + pr_debug(" - found match at '%s'\n", entry->name); ret = device_bind_with_driver_data(parent, entry, name, id->data, node, &dev); diff --git a/drivers/core/root.c b/drivers/core/root.c index b54bf5bcdc..cd6a5a0276 100644 --- a/drivers/core/root.c +++ b/drivers/core/root.c @@ -222,14 +222,12 @@ static int dm_scan_fdt_live(struct udevice *parent, 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)) { pr_debug(" - ignoring disabled device\n"); continue; } - err = lists_bind_fdt(parent, np_to_ofnode(np), NULL); + err = lists_bind_fdt(parent, np_to_ofnode(np), NULL, + pre_reloc_only); if (err && !ret) { ret = err; debug("%s: ret=%d\n", np->name, ret); @@ -282,14 +280,12 @@ static int dm_scan_fdt_node(struct udevice *parent, const void *blob, continue; } - if (pre_reloc_only && - !dm_fdt_pre_reloc(blob, offset)) - continue; if (!fdtdec_get_is_enabled(blob, offset)) { pr_debug(" - ignoring disabled device\n"); continue; } - err = lists_bind_fdt(parent, offset_to_ofnode(offset), NULL); + err = lists_bind_fdt(parent, offset_to_ofnode(offset), NULL, + pre_reloc_only); if (err && !ret) { ret = err; debug("%s: ret=%d\n", node_name, ret); diff --git a/drivers/misc/imx8/scu.c b/drivers/misc/imx8/scu.c index 0647ddf103..b824ac79e6 100644 --- a/drivers/misc/imx8/scu.c +++ b/drivers/misc/imx8/scu.c @@ -223,7 +223,7 @@ static int imx8_scu_bind(struct udevice *dev) if (node < 0) panic("No clk node found\n"); - ret = lists_bind_fdt(dev, offset_to_ofnode(node), &child); + ret = lists_bind_fdt(dev, offset_to_ofnode(node), &child, true); if (ret) return ret; @@ -234,7 +234,7 @@ static int imx8_scu_bind(struct udevice *dev) if (node < 0) panic("No iomuxc node found\n"); - ret = lists_bind_fdt(dev, offset_to_ofnode(node), &child); + ret = lists_bind_fdt(dev, offset_to_ofnode(node), &child, true); if (ret) return ret; diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c index 665cca85cb..3ded62732d 100644 --- a/drivers/serial/serial-uclass.c +++ b/drivers/serial/serial-uclass.c @@ -62,7 +62,7 @@ static int serial_check_stdout(const void *blob, struct udevice **devp) * anyway. */ if (node > 0 && !lists_bind_fdt(gd->dm_root, offset_to_ofnode(node), - devp)) { + devp, false)) { if (!device_probe(*devp)) return 0; } diff --git a/drivers/timer/timer-uclass.c b/drivers/timer/timer-uclass.c index fe73f71819..12ee6eb804 100644 --- a/drivers/timer/timer-uclass.c +++ b/drivers/timer/timer-uclass.c @@ -108,7 +108,7 @@ int notrace dm_timer_init(void) * If the timer is not marked to be bound before * relocation, bind it anyway. */ - if (!lists_bind_fdt(dm_root(), node, &dev)) { + if (!lists_bind_fdt(dm_root(), node, &dev, false)) { ret = device_probe(dev); if (ret) return ret; diff --git a/include/dm/lists.h b/include/dm/lists.h index 13d1516a12..59094d78fc 100644 --- a/include/dm/lists.h +++ b/include/dm/lists.h @@ -53,10 +53,13 @@ int lists_bind_drivers(struct udevice *parent, bool pre_reloc_only); * @parent: parent device (root) * @node: device tree node to bind * @devp: if non-NULL, returns a pointer to the bound device + * @pre_reloc_only: If true, bind only nodes with special devicetree properties, + * or drivers with the DM_FLAG_PRE_RELOC flag. If false bind all drivers. * @return 0 if device was bound, -EINVAL if the device tree is invalid, * other -ve value on error */ -int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp); +int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp, + bool pre_reloc_only); /** * device_bind_driver() - bind a device to a driver