At present the uclass list head is in global_data. This is convenient but with the new of-platdata we need the list head to be declared by the generated code.
Change this over to be a pointer. Provide a 'static' version in global_data to retain the current behaviour.
Signed-off-by: Simon Glass sjg@chromium.org ---
drivers/core/device.c | 4 ++-- drivers/core/root.c | 7 ++++--- drivers/core/uclass.c | 4 ++-- include/asm-generic/global_data.h | 8 +++++++- include/dm/device-internal.h | 1 + test/dm/core.c | 6 +++--- 6 files changed, 19 insertions(+), 11 deletions(-)
diff --git a/drivers/core/device.c b/drivers/core/device.c index 6a9bee093d0..aeab3836ed7 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -613,7 +613,7 @@ static int device_find_by_ofnode(ofnode node, struct udevice **devp) struct udevice *dev; int ret;
- list_for_each_entry(uc, &gd->uclass_root, sibling_node) { + list_for_each_entry(uc, gd->uclass_root, sibling_node) { ret = uclass_find_device_by_ofnode(uc->uc_drv->id, node, &dev); if (!ret || dev) { @@ -1032,7 +1032,7 @@ int dev_disable_by_path(const char *path) if (!of_live_active()) return -ENOSYS;
- list_for_each_entry(uc, &gd->uclass_root, sibling_node) { + list_for_each_entry(uc, gd->uclass_root, sibling_node) { ret = uclass_find_device_by_ofnode(uc->uc_drv->id, node, &dev); if (!ret) break; diff --git a/drivers/core/root.c b/drivers/core/root.c index 2a5ebec27d8..3adbc94eb94 100644 --- a/drivers/core/root.c +++ b/drivers/core/root.c @@ -45,8 +45,8 @@ void dm_fixup_for_gd_move(struct global_data *new_gd) { /* The sentinel node has moved, so update things that point to it */ if (gd->dm_root) { - new_gd->uclass_root.next->prev = &new_gd->uclass_root; - new_gd->uclass_root.prev->next = &new_gd->uclass_root; + new_gd->uclass_root->next->prev = new_gd->uclass_root; + new_gd->uclass_root->prev->next = new_gd->uclass_root; } }
@@ -136,7 +136,8 @@ int dm_init(bool of_live) dm_warn("Virtual root driver already exists!\n"); return -EINVAL; } - INIT_LIST_HEAD(&DM_UCLASS_ROOT_NON_CONST); + gd->uclass_root = &DM_UCLASS_ROOT_S_NON_CONST; + INIT_LIST_HEAD(DM_UCLASS_ROOT_NON_CONST);
if (IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC)) { fix_drivers(); diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index e773e34833e..cdb975d5b31 100644 --- a/drivers/core/uclass.c +++ b/drivers/core/uclass.c @@ -33,7 +33,7 @@ struct uclass *uclass_find(enum uclass_id key) * node to the start of the list, or creating a linear array mapping * id to node. */ - list_for_each_entry(uc, &gd->uclass_root, sibling_node) { + list_for_each_entry(uc, gd->uclass_root, sibling_node) { if (uc->uc_drv->id == key) return uc; } @@ -84,7 +84,7 @@ static int uclass_add(enum uclass_id id, struct uclass **ucp) uc->uc_drv = uc_drv; INIT_LIST_HEAD(&uc->sibling_node); INIT_LIST_HEAD(&uc->dev_head); - list_add(&uc->sibling_node, &DM_UCLASS_ROOT_NON_CONST); + list_add(&uc->sibling_node, DM_UCLASS_ROOT_NON_CONST);
if (uc_drv->init) { ret = uc_drv->init(uc); diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h index 87d827d0f43..b63575919f0 100644 --- a/include/asm-generic/global_data.h +++ b/include/asm-generic/global_data.h @@ -194,7 +194,13 @@ struct global_data { /** * @uclass_root: head of core tree */ - struct list_head uclass_root; + struct list_head uclass_root_s; + /** + * @uclass_root: pointer to head of core tree, if uclasses are in + * read-only memory and cannot be adjusted to use @uclass_root as a + * list head. + */ + struct list_head *uclass_root; # if CONFIG_IS_ENABLED(OF_PLATDATA) /** Dynamic info about the driver */ struct driver_rt *dm_driver_rt; diff --git a/include/dm/device-internal.h b/include/dm/device-internal.h index 03b092bdf7d..639bbd293d9 100644 --- a/include/dm/device-internal.h +++ b/include/dm/device-internal.h @@ -288,6 +288,7 @@ fdt_addr_t simple_bus_translate(struct udevice *dev, fdt_addr_t addr); /* Cast away any volatile pointer */ #define DM_ROOT_NON_CONST (((gd_t *)gd)->dm_root) #define DM_UCLASS_ROOT_NON_CONST (((gd_t *)gd)->uclass_root) +#define DM_UCLASS_ROOT_S_NON_CONST (((gd_t *)gd)->uclass_root_s)
/* device resource management */ #ifdef CONFIG_DEVRES diff --git a/test/dm/core.c b/test/dm/core.c index 565896ed504..580d171e30e 100644 --- a/test/dm/core.c +++ b/test/dm/core.c @@ -116,14 +116,14 @@ static int dm_test_autobind(struct unit_test_state *uts) * device with no children. */ ut_assert(dms->root); - ut_asserteq(1, list_count_items(&gd->uclass_root)); + ut_asserteq(1, list_count_items(gd->uclass_root)); ut_asserteq(0, list_count_items(&gd->dm_root->child_head)); ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_POST_BIND]);
ut_assertok(dm_scan_plat(false));
/* We should have our test class now at least, plus more children */ - ut_assert(1 < list_count_items(&gd->uclass_root)); + ut_assert(1 < list_count_items(gd->uclass_root)); ut_assert(0 < list_count_items(&gd->dm_root->child_head));
/* Our 3 dm_test_infox children should be bound to the test uclass */ @@ -1073,7 +1073,7 @@ static int dm_test_all_have_seq(struct unit_test_state *uts) struct udevice *dev; struct uclass *uc;
- list_for_each_entry(uc, &gd->uclass_root, sibling_node) { + list_for_each_entry(uc, gd->uclass_root, sibling_node) { list_for_each_entry(dev, &uc->dev_head, uclass_node) { if (dev->seq_ == -1) printf("Device '%s' has no seq (%d)\n",