Use the sandbox TPM driver to measure some boot images in a unit
test case.

Signed-off-by: Eddie James <eaja...@linux.ibm.com>
Reviewed-by: Simon Glass <s...@chromium.org>
---
Changes since v4:
 - Drop u8 casting in measurement test

Changes since v2:
 - Changed reserved memory address to the top of the RAM for sandbox dts.

 arch/sandbox/dts/sandbox.dtsi | 14 ++++++++
 arch/sandbox/dts/test.dts     | 13 +++++++
 configs/sandbox_defconfig     |  1 +
 include/test/suites.h         |  1 +
 test/boot/Makefile            |  1 +
 test/boot/measurement.c       | 66 +++++++++++++++++++++++++++++++++++
 test/cmd_ut.c                 |  2 ++
 7 files changed, 98 insertions(+)
 create mode 100644 test/boot/measurement.c

diff --git a/arch/sandbox/dts/sandbox.dtsi b/arch/sandbox/dts/sandbox.dtsi
index 18bf1cb5b6..3f0e192a83 100644
--- a/arch/sandbox/dts/sandbox.dtsi
+++ b/arch/sandbox/dts/sandbox.dtsi
@@ -4,9 +4,22 @@
  * and sandbox64 builds.
  */
 
+#include <config.h>
+
 #define USB_CLASS_HUB                  9
 
 / {
+       reserved-memory {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges;
+
+               event_log: tcg_event_log {
+                       no-map;
+                       reg = <(CFG_SYS_SDRAM_SIZE - 0x2000) 0x2000>;
+               };
+       };
+
        binman {
        };
 
@@ -332,6 +345,7 @@
 
        tpm2 {
                compatible = "sandbox,tpm2";
+               memory-region = <&event_log>;
        };
 
        triangle {
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 8c05927670..fa3f42a7b1 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -9,6 +9,7 @@
 
 /dts-v1/;
 
+#include <config.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/gpio/sandbox-gpio.h>
 #include <dt-bindings/input/input.h>
@@ -66,6 +67,17 @@
                osd0 = "/osd";
        };
 
+       reserved-memory {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges;
+
+               event_log: tcg_event_log {
+                       no-map;
+                       reg = <(CFG_SYS_SDRAM_SIZE - 0x2000) 0x2000>;
+               };
+       };
+
        binman: binman {
        };
 
@@ -1345,6 +1357,7 @@
 
        tpm2 {
                compatible = "sandbox,tpm2";
+               memory-region = <&event_log>;
        };
 
        uart0: serial {
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 34c342b6f5..9c4985adcf 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -337,3 +337,4 @@ CONFIG_TEST_FDTDEC=y
 CONFIG_UNIT_TEST=y
 CONFIG_UT_TIME=y
 CONFIG_UT_DM=y
+CONFIG_MEASURED_BOOT=y
diff --git a/include/test/suites.h b/include/test/suites.h
index 9ce49cbb03..4c284bbeaa 100644
--- a/include/test/suites.h
+++ b/include/test/suites.h
@@ -44,6 +44,7 @@ int do_ut_font(struct cmd_tbl *cmdtp, int flag, int argc, 
char *const argv[]);
 int do_ut_lib(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
 int do_ut_loadm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
 int do_ut_log(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]);
+int do_ut_measurement(struct cmd_tbl *cmdtp, int flag, int argc, char * const 
argv[]);
 int do_ut_mem(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
 int do_ut_optee(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
 int do_ut_overlay(struct cmd_tbl *cmdtp, int flag, int argc,
diff --git a/test/boot/Makefile b/test/boot/Makefile
index 22ed61c8fa..2dbb032a7e 100644
--- a/test/boot/Makefile
+++ b/test/boot/Makefile
@@ -4,6 +4,7 @@
 
 obj-$(CONFIG_BOOTSTD) += bootdev.o bootstd_common.o bootflow.o bootmeth.o
 obj-$(CONFIG_FIT) += image.o
+obj-$(CONFIG_MEASURED_BOOT) += measurement.o
 
 obj-$(CONFIG_EXPO) += expo.o
 
diff --git a/test/boot/measurement.c b/test/boot/measurement.c
new file mode 100644
index 0000000000..9db2ed324c
--- /dev/null
+++ b/test/boot/measurement.c
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Test for measured boot functions
+ *
+ * Copyright 2023 IBM Corp.
+ * Written by Eddie James <eaja...@linux.ibm.com>
+ */
+
+#include <common.h>
+#include <bootm.h>
+#include <malloc.h>
+#include <test/suites.h>
+#include <test/test.h>
+#include <test/ut.h>
+#include <asm/io.h>
+
+#define MEASUREMENT_TEST(_name, _flags)        \
+       UNIT_TEST(_name, _flags, measurement_test)
+
+static int measure(struct unit_test_state *uts)
+{
+       struct bootm_headers images;
+       const size_t size = 1024;
+       u8 *kernel;
+       u8 *initrd;
+       size_t i;
+
+       kernel = malloc(size);
+       initrd = malloc(size);
+
+       images.os.image_start = map_to_sysmem(kernel);
+       images.os.image_len = size;
+
+       images.rd_start = map_to_sysmem(initrd);
+       images.rd_end = images.rd_start + size;
+
+       images.ft_addr = malloc(size);
+       images.ft_len = size;
+
+       env_set("bootargs", "measurement testing");
+
+       for (i = 0; i < size; ++i) {
+               kernel[i] = 0xf0 | (i & 0xf);
+               initrd[i] = (i & 0xf0) | 0xf;
+               images.ft_addr[i] = i & 0xff;
+       }
+
+       ut_assertok(bootm_measure(&images));
+
+       free(images.ft_addr);
+       free(initrd);
+       free(kernel);
+
+       return 0;
+}
+MEASUREMENT_TEST(measure, 0);
+
+int do_ut_measurement(struct cmd_tbl *cmdtp, int flag, int argc,
+                     char *const argv[])
+{
+       struct unit_test *tests = UNIT_TEST_SUITE_START(measurement_test);
+       const int n_ents = UNIT_TEST_SUITE_COUNT(measurement_test);
+
+       return cmd_ut_category("measurement", "measurement_test_", tests,
+                              n_ents, argc, argv);
+}
diff --git a/test/cmd_ut.c b/test/cmd_ut.c
index 1713d0d1c8..2bd020cf74 100644
--- a/test/cmd_ut.c
+++ b/test/cmd_ut.c
@@ -101,6 +101,8 @@ static struct cmd_tbl cmd_ut_sub[] = {
                         "", ""),
        U_BOOT_CMD_MKENT(bloblist, CONFIG_SYS_MAXARGS, 1, do_ut_bloblist,
                         "", ""),
+       U_BOOT_CMD_MKENT(measurement, CONFIG_SYS_MAXARGS, 1, do_ut_measurement,
+                        "", ""),
        U_BOOT_CMD_MKENT(bootm, CONFIG_SYS_MAXARGS, 1, do_ut_bootm, "", ""),
 #endif
        U_BOOT_CMD_MKENT(str, CONFIG_SYS_MAXARGS, 1, do_ut_str, "", ""),
-- 
2.31.1

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