linux/security/integrity/platform_certs/load_ipl_s390.c
Martin Schwidefsky 9641b8cc73 s390/ipl: read IPL report at early boot
Read the IPL Report block provided by secure-boot, add the entries
of the certificate list to the system key ring and print the list
of components.

PR: Adjust to Vasilys bootdata_preserved patch set. Preserve ipl_cert_list
for later use in kexec_file.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-04-26 12:34:05 +02:00

37 lines
861 B
C

// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/cred.h>
#include <linux/err.h>
#include <linux/efi.h>
#include <linux/slab.h>
#include <keys/asymmetric-type.h>
#include <keys/system_keyring.h>
#include <asm/boot_data.h>
#include "../integrity.h"
/*
* Load the certs contained in the IPL report created by the machine loader
* into the platform trusted keyring.
*/
static int __init load_ipl_certs(void)
{
void *ptr, *end;
unsigned int len;
if (!ipl_cert_list_addr)
return 0;
/* Copy the certificates to the system keyring */
ptr = (void *) ipl_cert_list_addr;
end = ptr + ipl_cert_list_size;
while ((void *) ptr < end) {
len = *(unsigned int *) ptr;
ptr += sizeof(unsigned int);
add_to_platform_keyring("IPL:db", ptr, len);
ptr += len;
}
return 0;
}
late_initcall(load_ipl_certs);