[Buildroot] [PATCH 0/2] Support for i.MX Code Signing Tools

[Buildroot] [PATCH 0/2] Support for i.MX Code Signing Tools

[Thomas Perrot via buildroot]

This path serie add the i.MX CST package that allows to sign bootloader
stages, to be able to boot them on i.MX targets that verify the digital
signatures through HABv4 and AHAB.

Signed-off-by: Thomas Perrot <thomas.perrot@bootlin.com>

Thomas Perrot (2):
  package/byacc: add new package
  package/imx-cst: add new package

 DEVELOPERS                     |  4 ++++
 package/Config.in.host         |  1 +
 package/byacc/Config.in.host   | 10 ++++++++
 package/byacc/byacc.hash       |  3 +++
 package/byacc/byacc.mk         | 15 ++++++++++++
 package/imx-cst/Config.in.host |  8 +++++++
 package/imx-cst/imx-cst.hash   |  3 +++
 package/imx-cst/imx-cst.mk     | 42 ++++++++++++++++++++++++++++++++++
 8 files changed, 86 insertions(+)
 create mode 100644 package/byacc/Config.in.host
 create mode 100644 package/byacc/byacc.hash
 create mode 100644 package/byacc/byacc.mk
 create mode 100644 package/imx-cst/Config.in.host
 create mode 100644 package/imx-cst/imx-cst.hash
 create mode 100644 package/imx-cst/imx-cst.mk

--
2.35.1
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[Buildroot] [PATCH 1/2] package/byacc: add new package

[Thomas Perrot via buildroot]

This package provides a Berkeley LALR Yacc parser generator that has been use
by i.MX Code Signing tool.

Signed-off-by: Thomas Perrot <thomas.perrot@bootlin.com>
---
 DEVELOPERS                   |  3 +++
 package/byacc/Config.in.host | 10 ++++++++++
 package/byacc/byacc.hash     |  3 +++
 package/byacc/byacc.mk       | 15 +++++++++++++++
 4 files changed, 31 insertions(+)
 create mode 100644 package/byacc/Config.in.host
 create mode 100644 package/byacc/byacc.hash
 create mode 100644 package/byacc/byacc.mk

diff --git a/DEVELOPERS b/DEVELOPERS
index ca9decb58fec..e26cee2d776a 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -2765,6 +2765,9 @@ F:	package/frotz/
 F:	package/kvm-unit-tests/
 F:	package/xorcurses/
 
+N:	Thomas Perrot <thomas.perrot@bootlin.com>
+F:	package/byacc
+
 N:	Thomas Petazzoni <thomas.petazzoni@bootlin.com>
 F:	arch/Config.in.arm
 F:	board/beaglev/
diff --git a/package/byacc/Config.in.host b/package/byacc/Config.in.host
new file mode 100644
index 000000000000..040a37189bab
--- /dev/null
+++ b/package/byacc/Config.in.host
@@ -0,0 +1,10 @@
+config BR2_PACKAGE_HOST_BYACC
+	bool "host byacc"
+	help
+	  A parser generator utility that reads a grammar
+	  specification from a file and generates an LR(1)
+	  parser for it. The parsers consist of a set of
+	  LALR(1) parsing tables and a driver routine written
+	  in the C programming language.
+
+	  http://invisible-island.net/byacc/
diff --git a/package/byacc/byacc.hash b/package/byacc/byacc.hash
new file mode 100644
index 000000000000..d2ad441df39f
--- /dev/null
+++ b/package/byacc/byacc.hash
@@ -0,0 +1,3 @@
+# Locally calculated
+sha256  42c1805cc529314e6a76326fe1b33e80c70862a44b01474da362e2f7db2d749c  byacc-20220128.tgz
+sha256  654a231fe9cd4d36e580214962fa777a1df0771d6889cfc74d19a3d414f14711  LICENSE
diff --git a/package/byacc/byacc.mk b/package/byacc/byacc.mk
new file mode 100644
index 000000000000..103970aac9d2
--- /dev/null
+++ b/package/byacc/byacc.mk
@@ -0,0 +1,15 @@
+################################################################################
+#
+# byacc
+#
+################################################################################
+
+BYACC_SITE = https://invisible-mirror.net/archives/byacc
+BYACC_VERSION = 20220128
+BYACC_SOURCE = byacc-$(BYACC_VERSION).tgz
+BYACC_LICENSE = Public Domain
+BYACC_LICENSE_FILES = LICENSE
+
+HOST_BYACC_CONF_OPTS = --program-transform-name='s,^,b,'
+
+$(eval $(host-autotools-package))
-- 
2.35.1

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[Buildroot] [PATCH 2/2] package/imx-cst: add new package

[Thomas Perrot via buildroot]

This package provides i.MX Code Signing Tools uses to sign i.MX bootloader
to enable secure boot (HABv4 and AHAB).

Signed-off-by: Thomas Perrot <thomas.perrot@bootlin.com>
---
 DEVELOPERS                     |  1 +
 package/Config.in.host         |  1 +
 package/imx-cst/Config.in.host |  8 +++++++
 package/imx-cst/imx-cst.hash   |  3 +++
 package/imx-cst/imx-cst.mk     | 42 ++++++++++++++++++++++++++++++++++
 5 files changed, 55 insertions(+)
 create mode 100644 package/imx-cst/Config.in.host
 create mode 100644 package/imx-cst/imx-cst.hash
 create mode 100644 package/imx-cst/imx-cst.mk

diff --git a/DEVELOPERS b/DEVELOPERS
index e26cee2d776a..ce744986a573 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -2767,6 +2767,7 @@ F:	package/xorcurses/
 
 N:	Thomas Perrot <thomas.perrot@bootlin.com>
 F:	package/byacc
+F:	package/imx-cst
 
 N:	Thomas Petazzoni <thomas.petazzoni@bootlin.com>
 F:	arch/Config.in.arm
diff --git a/package/Config.in.host b/package/Config.in.host
index cd1c34b5a3d9..282594b40b8d 100644
--- a/package/Config.in.host
+++ b/package/Config.in.host
@@ -40,6 +40,7 @@ menu "Host utilities"
 	source "package/google-breakpad/Config.in.host"
 	source "package/gptfdisk/Config.in.host"
 	source "package/imagemagick/Config.in.host"
+	source "package/imx-cst/Config.in.host"
 	source "package/imx-mkimage/Config.in.host"
 	source "package/imx-usb-loader/Config.in.host"
 	source "package/jh71xx-tools/Config.in.host"
diff --git a/package/imx-cst/Config.in.host b/package/imx-cst/Config.in.host
new file mode 100644
index 000000000000..84cb825e59cf
--- /dev/null
+++ b/package/imx-cst/Config.in.host
@@ -0,0 +1,8 @@
+config BR2_PACKAGE_HOST_IMX_CST
+	bool "host imx-cst"
+	help
+	  I.MX code signing tool provides software code signing
+	  support designed that integrate the HABv4 and AHAB
+	  library.
+
+	  https://www.nxp.com/webapp/sps/download/license.jsp?colCode=IMX_CST_TOOL
diff --git a/package/imx-cst/imx-cst.hash b/package/imx-cst/imx-cst.hash
new file mode 100644
index 000000000000..9c27bfe82038
--- /dev/null
+++ b/package/imx-cst/imx-cst.hash
@@ -0,0 +1,3 @@
+# Locally calculated
+sha256  2bcc03c7cedba58f7207a72a28e75cfe78007988d68c1095c793cce991c2936e  imx-cst-e2c687a856e6670e753147aacef42d0a3c07891a-br1.tar.gz
+sha256  5dee6f54c636a97b15d7e9dfc8075248c36764b3819828cbc94cbd17c1755fb9  LICENSE.bsd3
diff --git a/package/imx-cst/imx-cst.mk b/package/imx-cst/imx-cst.mk
new file mode 100644
index 000000000000..453d1e5a9c4d
--- /dev/null
+++ b/package/imx-cst/imx-cst.mk
@@ -0,0 +1,42 @@
+################################################################################
+#
+# imx-cst
+#
+################################################################################
+
+# debian/3.3.1+dfsg-2
+IMX_CST_SITE = https://gitlab.apertis.org/pkg/imx-code-signing-tool.git
+IMX_CST_SITE_METHOD = git
+IMX_CST_VERSION = e2c687a856e6670e753147aacef42d0a3c07891a
+IMX_CST_LICENSE = BSD-3-Clause
+IMX_CST_LICENSE_FILES = LICENSE.bsd3
+
+HOST_IMX_CST_DEPENDENCIES = host-byacc host-flex host-openssl
+
+define HOST_IMX_CST_BUILD_CMDS
+	$(HOST_MAKE_ENV) $(MAKE) $(HOST_CONFIGURE_OPTS) \
+		OSTYPE=linux64 \
+		ENCRYPTION=yes \
+		COPTIONS="$(HOST_CFLAGS) $(HOST_CPPFLAGS)" \
+		LDFLAGS="$(HOST_LDFLAGS) -lcrypto" \
+		PWD=$(@D)/code/cst \
+		CC="$(CC) -I../../code/common/hdr \
+			-I../../code/back_end/hdr \
+			-I../../code/srktool/hdr \
+			-I../../code/front_end/hdr \
+			-I../../code/convlb/hdr" \
+		LD=$(CC) \
+		-C $(@D)/code/cst \
+		build
+	$(HOST_MAKE_ENV) $(MAKE) $(HOST_CONFIGURE_OPTS) \
+		COPTS="$(HOST_CFLAGS) $(HOST_CPPFLAGS) $(HOST_LDFLAGS)" \
+		-C $(@D)/code/hab_csf_parser
+endef
+
+define HOST_IMX_CST_INSTALL_CMDS
+	$(INSTALL) -D -m 755 $(@D)/code/cst/code/obj.linux64/cst $(HOST_DIR)/bin/cst
+	$(INSTALL) -D -m 755 $(@D)/code/cst/code/obj.linux64/srktool $(HOST_DIR)/bin/srktool
+	$(INSTALL) -D -m 755 $(@D)/code/hab_csf_parser/csf_parser $(HOST_DIR)/bin/csf_parser
+endef
+
+$(eval $(host-generic-package))
-- 
2.35.1

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Re: [Buildroot] [PATCH 1/2] package/byacc: add new package

[Thomas Petazzoni via buildroot]

Hello Thomas,

Thanks for your contribution.

Commit title should be just:

	package/byacc: new package

On Tue, 19 Apr 2022 11:21:50 +0200
Thomas Perrot <thomas.perrot@bootlin.com> wrote:

> This package provides a Berkeley LALR Yacc parser generator that has been use
> by i.MX Code Signing tool.
> 
> Signed-off-by: Thomas Perrot <thomas.perrot@bootlin.com>
> ---
>  DEVELOPERS                   |  3 +++
>  package/byacc/Config.in.host | 10 ++++++++++

Config.in.host not needed, this package is merely a build dependency of
another, so we don't need to see it in menuconfig.

> +N:	Thomas Perrot <thomas.perrot@bootlin.com>
> +F:	package/byacc

Please add a trailing slash, like other entries in this file.


> diff --git a/package/byacc/byacc.hash b/package/byacc/byacc.hash
> new file mode 100644
> index 000000000000..d2ad441df39f
> --- /dev/null
> +++ b/package/byacc/byacc.hash
> @@ -0,0 +1,3 @@
> +# Locally calculated
> +sha256  42c1805cc529314e6a76326fe1b33e80c70862a44b01474da362e2f7db2d749c  byacc-20220128.tgz
> +sha256  654a231fe9cd4d36e580214962fa777a1df0771d6889cfc74d19a3d414f14711  LICENSE
> diff --git a/package/byacc/byacc.mk b/package/byacc/byacc.mk
> new file mode 100644
> index 000000000000..103970aac9d2
> --- /dev/null
> +++ b/package/byacc/byacc.mk
> @@ -0,0 +1,15 @@
> +################################################################################
> +#
> +# byacc
> +#
> +################################################################################
> +
> +BYACC_SITE = https://invisible-mirror.net/archives/byacc
> +BYACC_VERSION = 20220128
> +BYACC_SOURCE = byacc-$(BYACC_VERSION).tgz
> +BYACC_LICENSE = Public Domain
> +BYACC_LICENSE_FILES = LICENSE
> +
> +HOST_BYACC_CONF_OPTS = --program-transform-name='s,^,b,'

Please add a comment above this that explains why this is needed, it
looks strange.

Thanks!

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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Re: [Buildroot] [PATCH 2/2] package/imx-cst: add new package

[Thomas Petazzoni via buildroot]

Hello Thomas,

On Tue, 19 Apr 2022 11:21:51 +0200
Thomas Perrot <thomas.perrot@bootlin.com> wrote:

>  N:	Thomas Perrot <thomas.perrot@bootlin.com>
>  F:	package/byacc
> +F:	package/imx-cst

Trailing slash needed.

> diff --git a/package/imx-cst/Config.in.host b/package/imx-cst/Config.in.host
> new file mode 100644
> index 000000000000..84cb825e59cf
> --- /dev/null
> +++ b/package/imx-cst/Config.in.host
> @@ -0,0 +1,8 @@
> +config BR2_PACKAGE_HOST_IMX_CST
> +	bool "host imx-cst"
> +	help
> +	  I.MX code signing tool provides software code signing
> +	  support designed that integrate the HABv4 and AHAB
> +	  library.
> +
> +	  https://www.nxp.com/webapp/sps/download/license.jsp?colCode=IMX_CST_TOOL

When I go to this page, I need to agree to a "SOFTWARE LICENSE
AGREEMENT i.MX CODE SIGNING TOOL", but then your .mk is pointing to a
non-NXP Git repository, and you state the license is BSD-3-Clause.

> +# debian/3.3.1+dfsg-2
> +IMX_CST_SITE = https://gitlab.apertis.org/pkg/imx-code-signing-tool.git

What is this location? Just someone who put the NXP code online? Or a
separate implementation?

> +IMX_CST_SITE_METHOD = git
> +IMX_CST_VERSION = e2c687a856e6670e753147aacef42d0a3c07891a
> +IMX_CST_LICENSE = BSD-3-Clause
> +IMX_CST_LICENSE_FILES = LICENSE.bsd3

There are two other license files in this Git repo, the hidapi license
and the OpenSSL license. You are confident they are not relevant? Would
be worth explaining that.

> +HOST_IMX_CST_DEPENDENCIES = host-byacc host-flex host-openssl
> +
> +define HOST_IMX_CST_BUILD_CMDS
> +	$(HOST_MAKE_ENV) $(MAKE) $(HOST_CONFIGURE_OPTS) \
> +		OSTYPE=linux64 \

Would be useful to explain why linux64 is fine even on 32-bit host
platforms. Actually, when I look at
https://gitlab.apertis.org/pkg/imx-code-signing-tool/-/blob/apertis/v2023dev2/code/cst/code/obj.linux64/Makefile
I believe that using OSTYPE=linux64 on 32-bit host machines will not
work, as it adds -m64 to the compiler flags.

> +		ENCRYPTION=yes \
> +		COPTIONS="$(HOST_CFLAGS) $(HOST_CPPFLAGS)" \
> +		LDFLAGS="$(HOST_LDFLAGS) -lcrypto" \
> +		PWD=$(@D)/code/cst \
> +		CC="$(CC) -I../../code/common/hdr \
> +			-I../../code/back_end/hdr \
> +			-I../../code/srktool/hdr \
> +			-I../../code/front_end/hdr \
> +			-I../../code/convlb/hdr" \

This looks strange. Flags are normally passed using CFLAGS, and $(CC)
in Buildroot doesn't exist, it's $(HOSTCC) that should be used.

Also, I think the list of header paths is properly set with:

CINCLUDES := $(SUBSYS:%=-I$(CST_CODE_PATH)/%/hdr)

but it gets overridden by the fact that you override CFLAGS.

I believe there's a better way, let me have a look.

> +		LD=$(CC) \

$(CC) doesn't exist, it should be $(HOSTCC).

> +		-C $(@D)/code/cst \
> +		build

Best regards,

Thomas
-- 
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Embedded Linux and Kernel engineering and training
https://bootlin.com
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Re: [Buildroot] [PATCH 2/2] package/imx-cst: add new package

[Thomas Petazzoni via buildroot]

On Tue, 19 Apr 2022 14:26:35 +0200
Thomas Petazzoni via buildroot <buildroot@buildroot.org> wrote:

> This looks strange. Flags are normally passed using CFLAGS, and $(CC)
> in Buildroot doesn't exist, it's $(HOSTCC) that should be used.
> 
> Also, I think the list of header paths is properly set with:
> 
> CINCLUDES := $(SUBSYS:%=-I$(CST_CODE_PATH)/%/hdr)
> 
> but it gets overridden by the fact that you override CFLAGS.
> 
> I believe there's a better way, let me have a look.

Here is what I could come up with:

ifneq ($(filter %64,$(HOSTARCH)),)
HOST_IMX_CST_OSTYPE = linux64
else
HOST_IMX_CST_OSTYPE = linux32
endif

# We don't use HOST_CONFIGURE_OPTS when building cst, because we need
# to preserve the CFLAGS/LDFLAGS used by their Makefile.
define HOST_IMX_CST_BUILD_CMDS
	$(HOST_MAKE_ENV) $(MAKE) \
		OSTYPE=$(HOST_IMX_CST_OSTYPE) \
		ENCRYPTION=yes \
		AR="$(HOSTAR)" \
		CC="$(HOSTCC)" \
		LD="$(HOSTCC)" \
		OBJCOPY="$(HOSTOBJCOPY)" \
		RANLIB="$(HOSTRANLIB)" \
		EXTRACFLAGS="$(HOST_CFLAGS) $(HOST_CPPFLAGS)" \
		EXTRALDFLAGS="$(HOST_LDFLAGS)" \
		PWD=$(@D)/code/cst \
		-C $(@D)/code/cst \
		build
	$(HOST_MAKE_ENV) $(MAKE) $(HOST_CONFIGURE_OPTS) \
		COPTS="$(HOST_CFLAGS) $(HOST_CPPFLAGS) $(HOST_LDFLAGS)" \
		-C $(@D)/code/hab_csf_parser
endef

define HOST_IMX_CST_INSTALL_CMDS
	$(INSTALL) -D -m 755 $(@D)/code/cst/code/obj.$(HOST_IMX_CST_OSTYPE)/cst $(HOST_DIR)/bin/cst
	$(INSTALL) -D -m 755 $(@D)/code/cst/code/obj.$(HOST_IMX_CST_OSTYPE)/srktool $(HOST_DIR)/bin/srktool
	$(INSTALL) -D -m 755 $(@D)/code/hab_csf_parser/csf_parser $(HOST_DIR)/bin/csf_parser
endef

Thomas
-- 
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Embedded Linux and Kernel engineering and training
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Re: [Buildroot] [PATCH 2/2] package/imx-cst: add new package

[Thomas Perrot via buildroot]

[-- Attachment #1.1: Type: text/plain, Size: 4042 bytes --]

Hello Thomas,

On Tue, 2022-04-19 at 14:26 +0200, Thomas Petazzoni via buildroot
wrote:
> Hello Thomas,
> 
> On Tue, 19 Apr 2022 11:21:51 +0200
> Thomas Perrot <thomas.perrot@bootlin.com> wrote:
> 
> >  N:     Thomas Perrot <thomas.perrot@bootlin.com>
> >  F:     package/byacc
> > +F:     package/imx-cst
> 
> Trailing slash needed.
> 
> > diff --git a/package/imx-cst/Config.in.host b/package/imx-
> > cst/Config.in.host
> > new file mode 100644
> > index 000000000000..84cb825e59cf
> > --- /dev/null
> > +++ b/package/imx-cst/Config.in.host
> > @@ -0,0 +1,8 @@
> > +config BR2_PACKAGE_HOST_IMX_CST
> > +       bool "host imx-cst"
> > +       help
> > +         I.MX code signing tool provides software code signing
> > +         support designed that integrate the HABv4 and AHAB
> > +         library.
> > +
> > +        
> > https://www.nxp.com/webapp/sps/download/license.jsp?colCode=IMX_CST_TOOL
> 
> When I go to this page, I need to agree to a "SOFTWARE LICENSE
> AGREEMENT i.MX CODE SIGNING TOOL", but then your .mk is pointing to a
> non-NXP Git repository, and you state the license is BSD-3-Clause.
> 
> > +# debian/3.3.1+dfsg-2
> > +IMX_CST_SITE =
> > https://gitlab.apertis.org/pkg/imx-code-signing-tool.git
> 
> What is this location? Just someone who put the NXP code online? Or a
> separate implementation?

NXP code has been put by Debian maintainers.

> 
> > +IMX_CST_SITE_METHOD = git
> > +IMX_CST_VERSION = e2c687a856e6670e753147aacef42d0a3c07891a
> > +IMX_CST_LICENSE = BSD-3-Clause
> > +IMX_CST_LICENSE_FILES = LICENSE.bsd3
> 
> There are two other license files in this Git repo, the hidapi
> license
> and the OpenSSL license. You are confident they are not relevant?
> Would
> be worth explaining that.

I think it is correct because from source the file
"Software_Content_Register_CST.txt" indicates that the outgoing license
is BSD-3-Clause, and Debian also use this BSD license.

Kind regards,
Thomas Perrot

> 
> > +HOST_IMX_CST_DEPENDENCIES = host-byacc host-flex host-openssl
> > +
> > +define HOST_IMX_CST_BUILD_CMDS
> > +       $(HOST_MAKE_ENV) $(MAKE) $(HOST_CONFIGURE_OPTS) \
> > +               OSTYPE=linux64 \
> 
> Would be useful to explain why linux64 is fine even on 32-bit host
> platforms. Actually, when I look at
> https://gitlab.apertis.org/pkg/imx-code-signing-tool/-/blob/apertis/v2023dev2/code/cst/code/obj.linux64/Makefile
> I believe that using OSTYPE=linux64 on 32-bit host machines will not
> work, as it adds -m64 to the compiler flags.
> 
> > +               ENCRYPTION=yes \
> > +               COPTIONS="$(HOST_CFLAGS) $(HOST_CPPFLAGS)" \
> > +               LDFLAGS="$(HOST_LDFLAGS) -lcrypto" \
> > +               PWD=$(@D)/code/cst \
> > +               CC="$(CC) -I../../code/common/hdr \
> > +                       -I../../code/back_end/hdr \
> > +                       -I../../code/srktool/hdr \
> > +                       -I../../code/front_end/hdr \
> > +                       -I../../code/convlb/hdr" \
> 
> This looks strange. Flags are normally passed using CFLAGS, and $(CC)
> in Buildroot doesn't exist, it's $(HOSTCC) that should be used.
> 
> Also, I think the list of header paths is properly set with:
> 
> CINCLUDES := $(SUBSYS:%=-I$(CST_CODE_PATH)/%/hdr)
> 
> but it gets overridden by the fact that you override CFLAGS.
> 
> I believe there's a better way, let me have a look.
> 
> > +               LD=$(CC) \
> 
> $(CC) doesn't exist, it should be $(HOSTCC).
> 
> > +               -C $(@D)/code/cst \
> > +               build
> 
> Best regards,
> 
> Thomas

-- 
Thomas Perrot, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com


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Re: [Buildroot] [PATCH 2/2] package/imx-cst: add new package

[Thomas Petazzoni via buildroot]

Hello,

On Wed, 20 Apr 2022 10:39:16 +0200
Thomas Perrot <thomas.perrot@bootlin.com> wrote:

> > What is this location? Just someone who put the NXP code online? Or a
> > separate implementation?  
> 
> NXP code has been put by Debian maintainers.

OK.

> I think it is correct because from source the file
> "Software_Content_Register_CST.txt" indicates that the outgoing license
> is BSD-3-Clause, and Debian also use this BSD license.

Indeed, it seems OK.

Maybe it would have been useful to have those details somewhere (in the
commit log perhaps)? But it's probably not worth sending another
iteration just for this.

Thomas
-- 
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Embedded Linux and Kernel engineering and training
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