mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 22:33:18 +00:00
47dd6b4d7d
For EFI, the distro boot scripts search in three different directories for the .dtb file. The SOC-based filename fallback is supported only for 32-bit ARM. Adjust the code to mirror this behaviour. Also some boards can use a prior-stage FDT if one is not found in the normal way. Support this and show a message in that case. Signed-off-by: Simon Glass <sjg@chromium.org> Suggested-by: Mark Kettenis <kettenis@openbsd.org>
554 lines
13 KiB
C
554 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2021 Google LLC
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#define LOG_CATEGORY UCLASS_BOOTSTD
|
|
|
|
#include <common.h>
|
|
#include <bootdev.h>
|
|
#include <bootflow.h>
|
|
#include <bootmeth.h>
|
|
#include <bootstd.h>
|
|
#include <dm.h>
|
|
#include <malloc.h>
|
|
#include <dm/device-internal.h>
|
|
#include <dm/uclass-internal.h>
|
|
|
|
/* error codes used to signal running out of things */
|
|
enum {
|
|
BF_NO_MORE_PARTS = -ESHUTDOWN,
|
|
BF_NO_MORE_DEVICES = -ENODEV,
|
|
};
|
|
|
|
/**
|
|
* bootflow_state - name for each state
|
|
*
|
|
* See enum bootflow_state_t for what each of these means
|
|
*/
|
|
static const char *const bootflow_state[BOOTFLOWST_COUNT] = {
|
|
"base",
|
|
"media",
|
|
"part",
|
|
"fs",
|
|
"file",
|
|
"ready",
|
|
};
|
|
|
|
const char *bootflow_state_get_name(enum bootflow_state_t state)
|
|
{
|
|
/* This doesn't need to be a useful name, since it will never occur */
|
|
if (state < 0 || state >= BOOTFLOWST_COUNT)
|
|
return "?";
|
|
|
|
return bootflow_state[state];
|
|
}
|
|
|
|
int bootflow_first_glob(struct bootflow **bflowp)
|
|
{
|
|
struct bootstd_priv *std;
|
|
int ret;
|
|
|
|
ret = bootstd_get_priv(&std);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (list_empty(&std->glob_head))
|
|
return -ENOENT;
|
|
|
|
*bflowp = list_first_entry(&std->glob_head, struct bootflow,
|
|
glob_node);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bootflow_next_glob(struct bootflow **bflowp)
|
|
{
|
|
struct bootstd_priv *std;
|
|
struct bootflow *bflow = *bflowp;
|
|
int ret;
|
|
|
|
ret = bootstd_get_priv(&std);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*bflowp = NULL;
|
|
|
|
if (list_is_last(&bflow->glob_node, &std->glob_head))
|
|
return -ENOENT;
|
|
|
|
*bflowp = list_entry(bflow->glob_node.next, struct bootflow, glob_node);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void bootflow_iter_init(struct bootflow_iter *iter, int flags)
|
|
{
|
|
memset(iter, '\0', sizeof(*iter));
|
|
iter->first_glob_method = -1;
|
|
iter->flags = flags;
|
|
|
|
/* remember the first bootdevs we see */
|
|
iter->max_devs = BOOTFLOW_MAX_USED_DEVS;
|
|
}
|
|
|
|
void bootflow_iter_uninit(struct bootflow_iter *iter)
|
|
{
|
|
free(iter->method_order);
|
|
}
|
|
|
|
int bootflow_iter_drop_bootmeth(struct bootflow_iter *iter,
|
|
const struct udevice *bmeth)
|
|
{
|
|
/* We only support disabling the current bootmeth */
|
|
if (bmeth != iter->method || iter->cur_method >= iter->num_methods ||
|
|
iter->method_order[iter->cur_method] != bmeth)
|
|
return -EINVAL;
|
|
|
|
memmove(&iter->method_order[iter->cur_method],
|
|
&iter->method_order[iter->cur_method + 1],
|
|
(iter->num_methods - iter->cur_method - 1) * sizeof(void *));
|
|
|
|
iter->num_methods--;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* bootflow_iter_set_dev() - switch to the next bootdev when iterating
|
|
*
|
|
* This sets iter->dev, records the device in the dev_used[] list and shows a
|
|
* message if required
|
|
*
|
|
* @iter: Iterator to update
|
|
* @dev: Bootdev to use, or NULL if there are no more
|
|
*/
|
|
static void bootflow_iter_set_dev(struct bootflow_iter *iter,
|
|
struct udevice *dev, int method_flags)
|
|
{
|
|
struct bootmeth_uc_plat *ucp = dev_get_uclass_plat(iter->method);
|
|
|
|
log_debug("iter: Setting dev to %s, flags %x\n",
|
|
dev ? dev->name : "(none)", method_flags);
|
|
iter->dev = dev;
|
|
iter->method_flags = method_flags;
|
|
|
|
if (IS_ENABLED(CONFIG_BOOTSTD_FULL)) {
|
|
/* record the device for later */
|
|
if (dev && iter->num_devs < iter->max_devs)
|
|
iter->dev_used[iter->num_devs++] = dev;
|
|
|
|
if ((iter->flags & (BOOTFLOWIF_SHOW | BOOTFLOWIF_SINGLE_DEV)) ==
|
|
BOOTFLOWIF_SHOW) {
|
|
if (dev)
|
|
printf("Scanning bootdev '%s':\n", dev->name);
|
|
else if (IS_ENABLED(CONFIG_BOOTMETH_GLOBAL) &&
|
|
ucp->flags & BOOTMETHF_GLOBAL)
|
|
printf("Scanning global bootmeth '%s':\n",
|
|
iter->method->name);
|
|
else
|
|
printf("No more bootdevs\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* iter_incr() - Move to the next item (method, part, bootdev)
|
|
*
|
|
* Return: 0 if OK, BF_NO_MORE_DEVICES if there are no more bootdevs
|
|
*/
|
|
static int iter_incr(struct bootflow_iter *iter)
|
|
{
|
|
struct udevice *dev;
|
|
bool inc_dev = true;
|
|
bool global;
|
|
int ret;
|
|
|
|
log_debug("entry: err=%d\n", iter->err);
|
|
global = iter->doing_global;
|
|
|
|
if (iter->err == BF_NO_MORE_DEVICES)
|
|
return BF_NO_MORE_DEVICES;
|
|
|
|
if (iter->err != BF_NO_MORE_PARTS) {
|
|
/* Get the next boothmethod */
|
|
if (++iter->cur_method < iter->num_methods) {
|
|
iter->method = iter->method_order[iter->cur_method];
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If we have finished scanning the global bootmeths, start the
|
|
* normal bootdev scan
|
|
*/
|
|
if (IS_ENABLED(CONFIG_BOOTMETH_GLOBAL) && global) {
|
|
iter->num_methods = iter->first_glob_method;
|
|
iter->doing_global = false;
|
|
|
|
/*
|
|
* Don't move to the next dev as we haven't tried this
|
|
* one yet!
|
|
*/
|
|
inc_dev = false;
|
|
}
|
|
}
|
|
|
|
/* No more bootmeths; start at the first one, and... */
|
|
iter->cur_method = 0;
|
|
iter->method = iter->method_order[iter->cur_method];
|
|
|
|
if (iter->err != BF_NO_MORE_PARTS) {
|
|
/* ...select next partition */
|
|
if (++iter->part <= iter->max_part)
|
|
return 0;
|
|
}
|
|
|
|
/* No more partitions; start at the first one and... */
|
|
iter->part = 0;
|
|
|
|
/*
|
|
* Note: as far as we know, there is no partition table on the next
|
|
* bootdev, so set max_part to 0 until we discover otherwise. See
|
|
* bootdev_find_in_blk() for where this is set.
|
|
*/
|
|
iter->max_part = 0;
|
|
|
|
/* ...select next bootdev */
|
|
if (iter->flags & BOOTFLOWIF_SINGLE_DEV) {
|
|
ret = -ENOENT;
|
|
} else {
|
|
int method_flags;
|
|
|
|
ret = 0;
|
|
dev = iter->dev;
|
|
log_debug("inc_dev=%d\n", inc_dev);
|
|
if (!inc_dev) {
|
|
ret = bootdev_setup_iter(iter, NULL, &dev,
|
|
&method_flags);
|
|
} else if (IS_ENABLED(CONFIG_BOOTSTD_FULL) &&
|
|
(iter->flags & BOOTFLOWIF_SINGLE_UCLASS)) {
|
|
/* Move to the next bootdev in this uclass */
|
|
uclass_find_next_device(&dev);
|
|
if (!dev) {
|
|
log_debug("finished uclass %s\n",
|
|
dev_get_uclass_name(dev));
|
|
ret = -ENODEV;
|
|
}
|
|
} else if (IS_ENABLED(CONFIG_BOOTSTD_FULL) &&
|
|
iter->flags & BOOTFLOWIF_SINGLE_MEDIA) {
|
|
log_debug("next in single\n");
|
|
method_flags = 0;
|
|
do {
|
|
/*
|
|
* Move to the next bootdev child of this media
|
|
* device. This ensures that we cover all the
|
|
* available SCSI IDs and LUNs.
|
|
*/
|
|
device_find_next_child(&dev);
|
|
log_debug("- next %s\n",
|
|
dev ? dev->name : "(none)");
|
|
} while (dev && device_get_uclass_id(dev) !=
|
|
UCLASS_BOOTDEV);
|
|
if (!dev) {
|
|
log_debug("finished uclass %s\n",
|
|
dev_get_uclass_name(dev));
|
|
ret = -ENODEV;
|
|
}
|
|
} else {
|
|
log_debug("labels %p\n", iter->labels);
|
|
if (iter->labels) {
|
|
ret = bootdev_next_label(iter, &dev,
|
|
&method_flags);
|
|
} else {
|
|
ret = bootdev_next_prio(iter, &dev);
|
|
method_flags = 0;
|
|
}
|
|
}
|
|
log_debug("ret=%d, dev=%p %s\n", ret, dev,
|
|
dev ? dev->name : "none");
|
|
if (ret) {
|
|
bootflow_iter_set_dev(iter, NULL, 0);
|
|
} else {
|
|
/*
|
|
* Probe the bootdev. This does not probe any attached
|
|
* block device, since they are siblings
|
|
*/
|
|
ret = device_probe(dev);
|
|
log_debug("probe %s %d\n", dev->name, ret);
|
|
if (!log_msg_ret("probe", ret))
|
|
bootflow_iter_set_dev(iter, dev, method_flags);
|
|
}
|
|
}
|
|
|
|
/* if there are no more bootdevs, give up */
|
|
if (ret)
|
|
return log_msg_ret("incr", BF_NO_MORE_DEVICES);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* bootflow_check() - Check if a bootflow can be obtained
|
|
*
|
|
* @iter: Provides part, bootmeth to use
|
|
* @bflow: Bootflow to update on success
|
|
* Return: 0 if OK, -ENOSYS if there is no bootflow support on this device,
|
|
* BF_NO_MORE_PARTS if there are no more partitions on bootdev
|
|
*/
|
|
static int bootflow_check(struct bootflow_iter *iter, struct bootflow *bflow)
|
|
{
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
if (IS_ENABLED(CONFIG_BOOTMETH_GLOBAL) && iter->doing_global) {
|
|
bootflow_iter_set_dev(iter, NULL, 0);
|
|
ret = bootmeth_get_bootflow(iter->method, bflow);
|
|
if (ret)
|
|
return log_msg_ret("glob", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
dev = iter->dev;
|
|
ret = bootdev_get_bootflow(dev, iter, bflow);
|
|
|
|
/* If we got a valid bootflow, return it */
|
|
if (!ret) {
|
|
log_debug("Bootdevice '%s' part %d method '%s': Found bootflow\n",
|
|
dev->name, iter->part, iter->method->name);
|
|
return 0;
|
|
}
|
|
|
|
/* Unless there is nothing more to try, move to the next device */
|
|
else if (ret != BF_NO_MORE_PARTS && ret != -ENOSYS) {
|
|
log_debug("Bootdevice '%s' part %d method '%s': Error %d\n",
|
|
dev->name, iter->part, iter->method->name, ret);
|
|
/*
|
|
* For 'all' we return all bootflows, even
|
|
* those with errors
|
|
*/
|
|
if (iter->flags & BOOTFLOWIF_ALL)
|
|
return log_msg_ret("all", ret);
|
|
}
|
|
if (ret)
|
|
return log_msg_ret("check", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bootflow_scan_first(struct udevice *dev, const char *label,
|
|
struct bootflow_iter *iter, int flags,
|
|
struct bootflow *bflow)
|
|
{
|
|
int ret;
|
|
|
|
if (dev || label)
|
|
flags |= BOOTFLOWIF_SKIP_GLOBAL;
|
|
bootflow_iter_init(iter, flags);
|
|
|
|
/*
|
|
* Set up the ordering of bootmeths. This sets iter->doing_global and
|
|
* iter->first_glob_method if we are starting with the global bootmeths
|
|
*/
|
|
ret = bootmeth_setup_iter_order(iter, !(flags & BOOTFLOWIF_SKIP_GLOBAL));
|
|
if (ret)
|
|
return log_msg_ret("obmeth", -ENODEV);
|
|
|
|
/* Find the first bootmeth (there must be at least one!) */
|
|
iter->method = iter->method_order[iter->cur_method];
|
|
|
|
if (!IS_ENABLED(CONFIG_BOOTMETH_GLOBAL) || !iter->doing_global) {
|
|
struct udevice *dev = NULL;
|
|
int method_flags;
|
|
|
|
ret = bootdev_setup_iter(iter, label, &dev, &method_flags);
|
|
if (ret)
|
|
return log_msg_ret("obdev", -ENODEV);
|
|
|
|
bootflow_iter_set_dev(iter, dev, method_flags);
|
|
}
|
|
|
|
ret = bootflow_check(iter, bflow);
|
|
if (ret) {
|
|
log_debug("check - ret=%d\n", ret);
|
|
if (ret != BF_NO_MORE_PARTS && ret != -ENOSYS) {
|
|
if (iter->flags & BOOTFLOWIF_ALL)
|
|
return log_msg_ret("all", ret);
|
|
}
|
|
iter->err = ret;
|
|
ret = bootflow_scan_next(iter, bflow);
|
|
if (ret)
|
|
return log_msg_ret("get", ret);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bootflow_scan_next(struct bootflow_iter *iter, struct bootflow *bflow)
|
|
{
|
|
int ret;
|
|
|
|
do {
|
|
ret = iter_incr(iter);
|
|
log_debug("iter_incr: ret=%d\n", ret);
|
|
if (ret == BF_NO_MORE_DEVICES)
|
|
return log_msg_ret("done", ret);
|
|
|
|
if (!ret) {
|
|
ret = bootflow_check(iter, bflow);
|
|
log_debug("check - ret=%d\n", ret);
|
|
if (!ret)
|
|
return 0;
|
|
iter->err = ret;
|
|
if (ret != BF_NO_MORE_PARTS && ret != -ENOSYS) {
|
|
if (iter->flags & BOOTFLOWIF_ALL)
|
|
return log_msg_ret("all", ret);
|
|
}
|
|
} else {
|
|
log_debug("incr failed, err=%d\n", ret);
|
|
iter->err = ret;
|
|
}
|
|
|
|
} while (1);
|
|
}
|
|
|
|
void bootflow_init(struct bootflow *bflow, struct udevice *bootdev,
|
|
struct udevice *meth)
|
|
{
|
|
memset(bflow, '\0', sizeof(*bflow));
|
|
bflow->dev = bootdev;
|
|
bflow->method = meth;
|
|
bflow->state = BOOTFLOWST_BASE;
|
|
}
|
|
|
|
void bootflow_free(struct bootflow *bflow)
|
|
{
|
|
free(bflow->name);
|
|
free(bflow->subdir);
|
|
free(bflow->fname);
|
|
free(bflow->buf);
|
|
free(bflow->os_name);
|
|
free(bflow->fdt_fname);
|
|
}
|
|
|
|
void bootflow_remove(struct bootflow *bflow)
|
|
{
|
|
if (bflow->dev)
|
|
list_del(&bflow->bm_node);
|
|
list_del(&bflow->glob_node);
|
|
|
|
bootflow_free(bflow);
|
|
free(bflow);
|
|
}
|
|
|
|
int bootflow_boot(struct bootflow *bflow)
|
|
{
|
|
int ret;
|
|
|
|
if (bflow->state != BOOTFLOWST_READY)
|
|
return log_msg_ret("load", -EPROTO);
|
|
|
|
ret = bootmeth_boot(bflow->method, bflow);
|
|
if (ret)
|
|
return log_msg_ret("boot", ret);
|
|
|
|
/*
|
|
* internal error, should not get here since we should have booted
|
|
* something or returned an error
|
|
*/
|
|
|
|
return log_msg_ret("end", -EFAULT);
|
|
}
|
|
|
|
int bootflow_run_boot(struct bootflow_iter *iter, struct bootflow *bflow)
|
|
{
|
|
int ret;
|
|
|
|
printf("** Booting bootflow '%s' with %s\n", bflow->name,
|
|
bflow->method->name);
|
|
if (IS_ENABLED(CONFIG_OF_HAS_PRIOR_STAGE) &&
|
|
(bflow->flags & BOOTFLOWF_USE_PRIOR_FDT))
|
|
printf("Using prior-stage device tree\n");
|
|
ret = bootflow_boot(bflow);
|
|
if (!IS_ENABLED(CONFIG_BOOTSTD_FULL)) {
|
|
printf("Boot failed (err=%d)\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
switch (ret) {
|
|
case -EPROTO:
|
|
printf("Bootflow not loaded (state '%s')\n",
|
|
bootflow_state_get_name(bflow->state));
|
|
break;
|
|
case -ENOSYS:
|
|
printf("Boot method '%s' not supported\n", bflow->method->name);
|
|
break;
|
|
case -ENOTSUPP:
|
|
/* Disable this bootflow for this iteration */
|
|
if (iter) {
|
|
int ret2;
|
|
|
|
ret2 = bootflow_iter_drop_bootmeth(iter, bflow->method);
|
|
if (!ret2) {
|
|
printf("Boot method '%s' failed and will not be retried\n",
|
|
bflow->method->name);
|
|
}
|
|
}
|
|
|
|
break;
|
|
default:
|
|
printf("Boot failed (err=%d)\n", ret);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int bootflow_iter_check_blk(const struct bootflow_iter *iter)
|
|
{
|
|
const struct udevice *media = dev_get_parent(iter->dev);
|
|
enum uclass_id id = device_get_uclass_id(media);
|
|
|
|
log_debug("uclass %d: %s\n", id, uclass_get_name(id));
|
|
if (id != UCLASS_ETH && id != UCLASS_BOOTSTD && id != UCLASS_QFW)
|
|
return 0;
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
int bootflow_iter_check_sf(const struct bootflow_iter *iter)
|
|
{
|
|
const struct udevice *media = dev_get_parent(iter->dev);
|
|
enum uclass_id id = device_get_uclass_id(media);
|
|
|
|
log_debug("uclass %d: %s\n", id, uclass_get_name(id));
|
|
if (id == UCLASS_SPI_FLASH)
|
|
return 0;
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
int bootflow_iter_check_net(const struct bootflow_iter *iter)
|
|
{
|
|
const struct udevice *media = dev_get_parent(iter->dev);
|
|
enum uclass_id id = device_get_uclass_id(media);
|
|
|
|
log_debug("uclass %d: %s\n", id, uclass_get_name(id));
|
|
if (id == UCLASS_ETH)
|
|
return 0;
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
int bootflow_iter_check_system(const struct bootflow_iter *iter)
|
|
{
|
|
const struct udevice *media = dev_get_parent(iter->dev);
|
|
enum uclass_id id = device_get_uclass_id(media);
|
|
|
|
log_debug("uclass %d: %s\n", id, uclass_get_name(id));
|
|
if (id == UCLASS_BOOTSTD)
|
|
return 0;
|
|
|
|
return -ENOTSUPP;
|
|
}
|