mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 08:58:52 +09:00
![Heiko Stübner](/assets/img/avatar_default.png)
Right now the u-boot,dm-pre-reloc flag will make each marked node always appear in both spl and tpl. But systems needing an additional tpl might have special constraints for each, like the spl needing to be very tiny. So introduce two additional flags to mark nodes for only spl or tpl environments and introduce a function dm_fdt_pre_reloc to automate the necessary checks in code instances checking for pre-relocation flags. The behaviour of the original flag stays untouched and still marks a node for both spl and tpl. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Kever Yang <kever.yang@rock-chips.com>
290 lines
6.3 KiB
C
290 lines
6.3 KiB
C
/*
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* Copyright (c) 2013 Google, Inc
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*
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* (C) Copyright 2012
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* Pavel Herrmann <morpheus.ibis@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <errno.h>
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#include <fdtdec.h>
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#include <malloc.h>
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#include <libfdt.h>
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#include <dm/device.h>
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#include <dm/device-internal.h>
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#include <dm/lists.h>
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#include <dm/platdata.h>
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#include <dm/root.h>
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#include <dm/uclass.h>
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#include <dm/util.h>
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#include <linux/list.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct root_priv {
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fdt_addr_t translation_offset; /* optional translation offset */
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};
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static const struct driver_info root_info = {
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.name = "root_driver",
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};
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struct udevice *dm_root(void)
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{
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if (!gd->dm_root) {
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dm_warn("Virtual root driver does not exist!\n");
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return NULL;
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}
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return gd->dm_root;
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}
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void dm_fixup_for_gd_move(struct global_data *new_gd)
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{
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/* The sentinel node has moved, so update things that point to it */
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new_gd->uclass_root.next->prev = &new_gd->uclass_root;
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new_gd->uclass_root.prev->next = &new_gd->uclass_root;
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}
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fdt_addr_t dm_get_translation_offset(void)
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{
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struct udevice *root = dm_root();
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struct root_priv *priv = dev_get_priv(root);
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return priv->translation_offset;
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}
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void dm_set_translation_offset(fdt_addr_t offs)
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{
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struct udevice *root = dm_root();
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struct root_priv *priv = dev_get_priv(root);
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priv->translation_offset = offs;
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}
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#if defined(CONFIG_NEEDS_MANUAL_RELOC)
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void fix_drivers(void)
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{
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struct driver *drv =
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ll_entry_start(struct driver, driver);
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const int n_ents = ll_entry_count(struct driver, driver);
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struct driver *entry;
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for (entry = drv; entry != drv + n_ents; entry++) {
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if (entry->of_match)
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entry->of_match = (const struct udevice_id *)
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((u32)entry->of_match + gd->reloc_off);
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if (entry->bind)
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entry->bind += gd->reloc_off;
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if (entry->probe)
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entry->probe += gd->reloc_off;
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if (entry->remove)
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entry->remove += gd->reloc_off;
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if (entry->unbind)
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entry->unbind += gd->reloc_off;
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if (entry->ofdata_to_platdata)
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entry->ofdata_to_platdata += gd->reloc_off;
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if (entry->child_post_bind)
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entry->child_post_bind += gd->reloc_off;
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if (entry->child_pre_probe)
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entry->child_pre_probe += gd->reloc_off;
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if (entry->child_post_remove)
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entry->child_post_remove += gd->reloc_off;
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/* OPS are fixed in every uclass post_probe function */
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if (entry->ops)
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entry->ops += gd->reloc_off;
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}
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}
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void fix_uclass(void)
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{
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struct uclass_driver *uclass =
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ll_entry_start(struct uclass_driver, uclass);
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const int n_ents = ll_entry_count(struct uclass_driver, uclass);
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struct uclass_driver *entry;
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for (entry = uclass; entry != uclass + n_ents; entry++) {
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if (entry->post_bind)
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entry->post_bind += gd->reloc_off;
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if (entry->pre_unbind)
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entry->pre_unbind += gd->reloc_off;
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if (entry->pre_probe)
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entry->pre_probe += gd->reloc_off;
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if (entry->post_probe)
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entry->post_probe += gd->reloc_off;
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if (entry->pre_remove)
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entry->pre_remove += gd->reloc_off;
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if (entry->child_post_bind)
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entry->child_post_bind += gd->reloc_off;
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if (entry->child_pre_probe)
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entry->child_pre_probe += gd->reloc_off;
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if (entry->init)
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entry->init += gd->reloc_off;
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if (entry->destroy)
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entry->destroy += gd->reloc_off;
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/* FIXME maybe also need to fix these ops */
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if (entry->ops)
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entry->ops += gd->reloc_off;
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}
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}
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void fix_devices(void)
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{
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struct driver_info *dev =
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ll_entry_start(struct driver_info, driver_info);
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const int n_ents = ll_entry_count(struct driver_info, driver_info);
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struct driver_info *entry;
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for (entry = dev; entry != dev + n_ents; entry++) {
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if (entry->platdata)
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entry->platdata += gd->reloc_off;
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}
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}
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#endif
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int dm_init(void)
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{
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int ret;
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if (gd->dm_root) {
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dm_warn("Virtual root driver already exists!\n");
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return -EINVAL;
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}
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INIT_LIST_HEAD(&DM_UCLASS_ROOT_NON_CONST);
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#if defined(CONFIG_NEEDS_MANUAL_RELOC)
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fix_drivers();
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fix_uclass();
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fix_devices();
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#endif
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ret = device_bind_by_name(NULL, false, &root_info, &DM_ROOT_NON_CONST);
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if (ret)
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return ret;
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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DM_ROOT_NON_CONST->of_offset = 0;
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#endif
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ret = device_probe(DM_ROOT_NON_CONST);
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if (ret)
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return ret;
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return 0;
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}
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int dm_uninit(void)
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{
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device_remove(dm_root());
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device_unbind(dm_root());
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return 0;
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}
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int dm_scan_platdata(bool pre_reloc_only)
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{
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int ret;
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ret = lists_bind_drivers(DM_ROOT_NON_CONST, pre_reloc_only);
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if (ret == -ENOENT) {
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dm_warn("Some drivers were not found\n");
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ret = 0;
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}
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return ret;
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}
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#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
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int dm_scan_fdt_node(struct udevice *parent, const void *blob, int offset,
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bool pre_reloc_only)
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{
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int ret = 0, err;
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for (offset = fdt_first_subnode(blob, offset);
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offset > 0;
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offset = fdt_next_subnode(blob, offset)) {
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if (pre_reloc_only &&
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!dm_fdt_pre_reloc(blob, offset))
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continue;
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if (!fdtdec_get_is_enabled(blob, offset)) {
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dm_dbg(" - ignoring disabled device\n");
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continue;
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}
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err = lists_bind_fdt(parent, blob, offset, NULL);
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if (err && !ret) {
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ret = err;
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debug("%s: ret=%d\n", fdt_get_name(blob, offset, NULL),
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ret);
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}
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}
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if (ret)
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dm_warn("Some drivers failed to bind\n");
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return ret;
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}
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int dm_scan_fdt_dev(struct udevice *dev)
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{
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if (dev_of_offset(dev) == -1)
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return 0;
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return dm_scan_fdt_node(dev, gd->fdt_blob, dev_of_offset(dev),
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gd->flags & GD_FLG_RELOC ? false : true);
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}
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int dm_scan_fdt(const void *blob, bool pre_reloc_only)
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{
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return dm_scan_fdt_node(gd->dm_root, blob, 0, pre_reloc_only);
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}
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#endif
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__weak int dm_scan_other(bool pre_reloc_only)
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{
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return 0;
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}
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int dm_init_and_scan(bool pre_reloc_only)
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{
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int ret;
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ret = dm_init();
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if (ret) {
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debug("dm_init() failed: %d\n", ret);
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return ret;
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}
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ret = dm_scan_platdata(pre_reloc_only);
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if (ret) {
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debug("dm_scan_platdata() failed: %d\n", ret);
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return ret;
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}
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if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
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ret = dm_scan_fdt(gd->fdt_blob, pre_reloc_only);
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if (ret) {
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debug("dm_scan_fdt() failed: %d\n", ret);
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return ret;
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}
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}
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ret = dm_scan_other(pre_reloc_only);
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if (ret)
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return ret;
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return 0;
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}
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/* This is the root driver - all drivers are children of this */
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U_BOOT_DRIVER(root_driver) = {
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.name = "root_driver",
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.id = UCLASS_ROOT,
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.priv_auto_alloc_size = sizeof(struct root_priv),
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};
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/* This is the root uclass */
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UCLASS_DRIVER(root) = {
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.name = "root",
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.id = UCLASS_ROOT,
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};
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