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bootstd: Remove special-case code for boot_targets

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Rather than implement this as its own case in build_order(), process the
boot_targets environment variable in the bootstd_get_bootdev_order()
function. This allows build_order() to be simplified.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2023-01-17 10:47:15 -07:00 committed by Tom Rini
parent 3e96ed44e8
commit 6a6638f093
3 changed files with 32 additions and 31 deletions
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32
boot/bootdev-uclass.c
View file

@ -12,7 +12,6 @@
#include <bootflow.h>
#include <bootmeth.h>
#include <bootstd.h>
#include <env.h>
#include <fs.h>
#include <log.h>
#include <malloc.h>
@ -504,34 +503,13 @@ static int build_order(struct udevice *bootstd, struct udevice **order,
const char *overflow_target = NULL;
const char *const *labels;
struct udevice *dev;
const char *targets;
int i, ret, count;
bool ok;
targets = env_get("boot_targets");
labels = IS_ENABLED(CONFIG_BOOTSTD_FULL) ?
bootstd_get_bootdev_order(bootstd) : NULL;
if (targets) {
char str[BOOT_TARGETS_MAX_LEN];
char *target;
if (strlen(targets) >= BOOT_TARGETS_MAX_LEN)
return log_msg_ret("len", -E2BIG);
/* make a copy of the string, since strok() will change it */
strcpy(str, targets);
for (i = 0, target = strtok(str, " "); target;
target = strtok(NULL, " ")) {
ret = bootdev_find_by_label(target, &dev);
if (!ret) {
if (i == max_count) {
overflow_target = target;
break;
}
order[i++] = dev;
}
}
count = i;
} else if (labels) {
labels = bootstd_get_bootdev_order(bootstd, &ok);
if (!ok)
return log_msg_ret("ord", -ENOMEM);
if (labels) {
int upto;
upto = 0;

17
boot/bootstd-uclass.c
View file

@ -10,6 +10,7 @@
#include <bootflow.h>
#include <bootstd.h>
#include <dm.h>
#include <env.h>
#include <log.h>
#include <malloc.h>
#include <dm/device-internal.h>
@ -72,9 +73,23 @@ static int bootstd_remove(struct udevice *dev)
return 0;
}
const char *const *const bootstd_get_bootdev_order(struct udevice *dev)
const char *const *const bootstd_get_bootdev_order(struct udevice *dev,
bool *okp)
{
struct bootstd_priv *std = dev_get_priv(dev);
const char *targets = env_get("boot_targets");
*okp = true;
log_debug("- targets %s %p\n", targets, std->bootdev_order);
if (targets && *targets) {
str_free_list(std->env_order);
std->env_order = str_to_list(targets);
if (!std->env_order) {
*okp = false;
return NULL;
}
return std->env_order;
}
return std->bootdev_order;
}

14
include/bootstd.h
View file

@ -22,7 +22,10 @@ struct udevice;
* @prefixes: NULL-terminated list of prefixes to use for bootflow filenames,
* e.g. "/", "/boot/"; NULL if none
* @bootdev_order: Order to use for bootdevs (or NULL if none), with each item
* being a bootdev label, e.g. "mmc2", "mmc1";
* being a bootdev label, e.g. "mmc2", "mmc1" (NULL terminated)
* @env_order: Order as specified by the boot_targets env var (or NULL if none),
* with each item being a bootdev label, e.g. "mmc2", "mmc1" (NULL
* terminated)
* @cur_bootdev: Currently selected bootdev (for commands)
* @cur_bootflow: Currently selected bootflow (for commands)
* @glob_head: Head for the global list of all bootflows across all bootdevs
@ -34,6 +37,7 @@ struct udevice;
struct bootstd_priv {
const char **prefixes;
const char **bootdev_order;
const char **env_order;
struct udevice *cur_bootdev;
struct bootflow *cur_bootflow;
struct list_head glob_head;
@ -51,9 +55,13 @@ struct bootstd_priv {
* The list is alloced by the bootstd driver so should not be freed. That is the
* reason for all the const stuff in the function signature
*
* Return: list of string points, terminated by NULL; or NULL if no boot order
* @dev: bootstd device
* @okp: returns true if OK, false if out of memory
* Return: list of string pointers, terminated by NULL; or NULL if no boot
* order. Note that this returns NULL in the case of an empty list
*/
const char *const *const bootstd_get_bootdev_order(struct udevice *dev);
const char *const *const bootstd_get_bootdev_order(struct udevice *dev,
bool *okp);
/**
* bootstd_get_prefixes() - Get the filename-prefixes list