linux-integrity.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Nayna Jain <nayna@linux.ibm.com>
To: linuxppc-dev@ozlabs.org, linux-efi@vger.kernel.org,
	linux-integrity@vger.kernel.org, devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
	Michael Ellerman <mpe@ellerman.id.au>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Jeremy Kerr <jk@ozlabs.org>,
	Matthew Garret <matthew.garret@nebula.com>,
	Mimi Zohar <zohar@linux.ibm.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Claudio Carvalho <cclaudio@linux.ibm.com>,
	George Wilson <gcwilson@linux.ibm.com>,
	Elaine Palmer <erpalmer@us.ibm.com>,
	Eric Ricther <erichte@linux.ibm.com>,
	"Oliver O'Halloran" <oohall@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Nayna Jain <nayna@linux.ibm.com>
Subject: [PATCH v6 4/9] powerpc: detect the trusted boot state of the system
Date: Fri, 27 Sep 2019 10:25:55 -0400	[thread overview]
Message-ID: <1569594360-7141-5-git-send-email-nayna@linux.ibm.com> (raw)
In-Reply-To: <1569594360-7141-1-git-send-email-nayna@linux.ibm.com>

PowerNV systems enables the IMA measurement rules only if the
trusted boot is enabled on the system.

This patch adds the function to detect if the system has trusted
boot enabled.

Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
---
 arch/powerpc/include/asm/secure_boot.h |  6 ++++++
 arch/powerpc/kernel/secure_boot.c      | 14 ++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/arch/powerpc/include/asm/secure_boot.h b/arch/powerpc/include/asm/secure_boot.h
index 4e8e2b08a993..192caaedbe7a 100644
--- a/arch/powerpc/include/asm/secure_boot.h
+++ b/arch/powerpc/include/asm/secure_boot.h
@@ -14,6 +14,7 @@
 
 bool is_powerpc_os_secureboot_enabled(void);
 int get_powerpc_os_sb_node(struct device_node **node);
+bool is_powerpc_trustedboot_enabled(void);
 
 #else
 
@@ -27,5 +28,10 @@ static inline int get_powerpc_os_sb_node(struct device_node **node)
 	return -ENOENT;
 }
 
+static inline bool is_powerpc_os_trustedboot_enabled(void)
+{
+	return false;
+}
+
 #endif
 #endif
diff --git a/arch/powerpc/kernel/secure_boot.c b/arch/powerpc/kernel/secure_boot.c
index 45ca19f5e836..9d452e1550ae 100644
--- a/arch/powerpc/kernel/secure_boot.c
+++ b/arch/powerpc/kernel/secure_boot.c
@@ -80,3 +80,17 @@ bool is_powerpc_os_secureboot_enabled(void)
 	pr_info("secureboot mode disabled\n");
 	return false;
 }
+
+bool is_powerpc_trustedboot_enabled(void)
+{
+	struct device_node *node;
+
+	node = get_powerpc_fw_sb_node();
+	if (node && (of_find_property(node, "trusted-enabled", NULL))) {
+		pr_info("trustedboot mode enabled\n");
+		return true;
+	}
+
+	pr_info("trustedboot mode disabled\n");
+	return false;
+}
-- 
2.20.1


  parent reply	other threads:[~2019-09-27 14:26 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-27 14:25 [PATCH v6 0/9] powerpc: Enabling IMA arch specific secure boot policies Nayna Jain
2019-09-27 14:25 ` [PATCH v6 1/9] dt-bindings: ibm,secureboot: secure boot specific properties for PowerNV Nayna Jain
2019-10-01 13:33   ` Rob Herring
2019-10-01 16:29     ` Nayna
2019-09-27 14:25 ` [PATCH v6 2/9] powerpc: detect the secure boot mode of the system Nayna Jain
2019-09-27 14:25 ` [PATCH v6 3/9] powerpc: add support to initialize ima policy rules Nayna Jain
2019-10-01  1:04   ` Thiago Jung Bauermann
2019-10-01 16:07     ` Nayna
2019-10-02  0:23       ` Thiago Jung Bauermann
2019-10-02 21:49       ` Mimi Zohar
2019-10-08 13:12         ` Nayna
2019-09-27 14:25 ` Nayna Jain [this message]
2019-09-27 14:25 ` [PATCH v6 5/9] powerpc/ima: add measurement rules to ima arch specific policy Nayna Jain
2019-09-29  4:20   ` Mimi Zohar
2019-09-27 14:25 ` [PATCH v6 6/9] ima: make process_buffer_measurement() non static Nayna Jain
2019-10-02 22:04   ` Mimi Zohar
2019-09-27 14:25 ` [PATCH v6 7/9] ima: check against blacklisted hashes for files with modsig Nayna Jain
2019-10-02 20:44   ` Mimi Zohar
2019-09-27 14:25 ` [PATCH v6 8/9] ima: deprecate permit_directio, instead use appraise_flag Nayna Jain
2019-10-02 21:00   ` Mimi Zohar
2019-09-27 14:26 ` [PATCH v6 9/9] powerpc/ima: update ima arch policy to check for blacklist Nayna Jain

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1569594360-7141-5-git-send-email-nayna@linux.ibm.com \
    --to=nayna@linux.ibm.com \
    --cc=ard.biesheuvel@linaro.org \
    --cc=benh@kernel.crashing.org \
    --cc=cclaudio@linux.ibm.com \
    --cc=devicetree@vger.kernel.org \
    --cc=erichte@linux.ibm.com \
    --cc=erpalmer@us.ibm.com \
    --cc=gcwilson@linux.ibm.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=jk@ozlabs.org \
    --cc=linux-efi@vger.kernel.org \
    --cc=linux-integrity@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linuxppc-dev@ozlabs.org \
    --cc=mark.rutland@arm.com \
    --cc=matthew.garret@nebula.com \
    --cc=mpe@ellerman.id.au \
    --cc=oohall@gmail.com \
    --cc=paulus@samba.org \
    --cc=robh+dt@kernel.org \
    --cc=zohar@linux.ibm.com \
    --subject='Re: [PATCH v6 4/9] powerpc: detect the trusted boot state of the system' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).