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bootstd: Add command to enable setting of bootmeth specific properties

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We have previously added logic to allow a "fallback" option to be
specified in the extlinux configuration. Provide a command that allows
us to set this as the preferred default option when booting.

Combined with the bootcount functionality, this allows the "altbootcmd"
to provide a means of falling back to a previously known good state
after a failed update. For example, if "bootcmd" is set to:

    bootflow scan -lb

We would set "altbootcmd" to:

    bootmeth set extlinux fallback 1; bootflow scan -lb

Causing the boot process to boot from the fallback option.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
This commit is contained in:
Martyn Welch
2024-10-09 14:15:40 +01:00
committed by Tom Rini
parent 8ba82a91b3
commit 3809fd35a5
6 changed files with 196 additions and 6 deletions
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25
boot/bootmeth-uclass.c
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@@ -251,6 +251,31 @@ int bootmeth_set_order(const char *order_str)
return 0;
}
int bootmeth_set_property(const char *name, const char *property, const char *value)
{
int ret;
int len;
struct udevice *dev;
const struct bootmeth_ops *ops;
len = strlen(name);
ret = uclass_find_device_by_namelen(UCLASS_BOOTMETH, name, len,
&dev);
if (ret) {
printf("Unknown bootmeth '%s'\n", name);
return ret;
}
ops = bootmeth_get_ops(dev);
if (!ops->set_property) {
printf("set_property not found\n");
return -ENODEV;
}
return ops->set_property(dev, property, value);
}
int bootmeth_setup_fs(struct bootflow *bflow, struct blk_desc *desc)
{
int ret;