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efi_loader: Run dhcp if an http boot option is selected

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The EFI boot manager relies on having an IP address before trying to
boot an EFI HTTP(s) boot entry. However, defining it as a boot or
pre-boot command is not always the right answer since it will
unconditionally add delay to the board boot, even if we don't boot
over the network.

So let's do a DHCP request from the boot manager, if 'ipaddr' is
empty and fail early if we don't have an address.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Tested-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
Ilias Apalodimas
2025-05-23 16:04:04 +03:00
committed by Heinrich Schuchardt
parent 29c449ccb5
commit f8949b1d1d
1 changed files with 7 additions and 0 deletions
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7
lib/efi_loader/efi_bootmgr.c
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@@ -480,6 +480,13 @@ static efi_status_t try_load_from_uri_path(struct efi_device_path_uri *uridp,
if (!ctx)
return EFI_OUT_OF_RESOURCES;
s = env_get("ipaddr");
if (!s && dhcp_run(0, NULL, false)) {
log_err("Error: Can't find a valid IP address\n");
ret = EFI_DEVICE_ERROR;
goto err;
}
s = env_get("loadaddr");
if (!s) {
log_err("Error: loadaddr is not set\n");