cmd: pxe_utils: sysboot: add kaslr-seed generation support
this will add kaslrseed keyword to sysboot lable,
when it set, it will request to genarate random number
from hwrng as kaslr-seed.
with this patch exlinux.conf label looks like
label l0
menu testing
linux /boot/vmlinuz-5.15.16-arm
initrd /boot/initramfs-5.15.16-arm.img
fdtdir /boot/dtbs/5.15.16-arm/
kaslrseed
append root=UUID=92ae1e50-eeeb-4c5b-8939-7e1cd6cfb059 ro
Tested on Khadas VIM with kernel 5.16.0-rc5-arm64, Debian 11.
Signed-off-by: Zhang Ning <zhangn1985@qq.com>
diff --git a/include/pxe_utils.h b/include/pxe_utils.h
index dad2668..4a73b2a 100644
--- a/include/pxe_utils.h
+++ b/include/pxe_utils.h
@@ -33,6 +33,7 @@
* initrd - path to the initrd to use for this label.
* attempted - 0 if we haven't tried to boot this label, 1 if we have.
* localboot - 1 if this label specified 'localboot', 0 otherwise.
+ * kaslrseed - 1 if generate kaslrseed from hw_rng
* list - lets these form a list, which a pxe_menu struct will hold.
*/
struct pxe_label {
@@ -50,6 +51,7 @@
int attempted;
int localboot;
int localboot_val;
+ int kaslrseed;
struct list_head list;
};