tpm: prepare support for TPMv2.x commands

Choice between v1 and v2 compliant functions is done with the
configuration.

Create the various files that will receive TPMv2-only code on the same
scheme as for the TPMv1 code.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

cmd/Makefile

@@ -123,6 +123,7 @@ obj-$(CONFIG_HUSH_PARSER) += test.o
 obj-$(CONFIG_CMD_TPM) += tpm-common.o
 obj-$(CONFIG_CMD_TPM_V1) += tpm-v1.o
 obj-$(CONFIG_CMD_TPM_TEST) += tpm_test.o
+obj-$(CONFIG_CMD_TPM_V2) += tpm-v2.o
 obj-$(CONFIG_CMD_CROS_EC) += cros_ec.o
 obj-$(CONFIG_CMD_TSI148) += tsi148.o
 obj-$(CONFIG_CMD_UBI) += ubi.o

cmd/tpm-v2.c

@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2018 Bootlin
+ * Author: Miquel Raynal <miquel.raynal@bootlin.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <log.h>
+#include <tpm-common.h>
+#include <tpm-v2.h>
+#include "tpm-user-utils.h"
+
+static cmd_tbl_t tpm2_commands[] = {
+	U_BOOT_CMD_MKENT(info, 0, 1, do_tpm_info, "", ""),
+	U_BOOT_CMD_MKENT(init, 0, 1, do_tpm_init, "", ""),
+};
+
+cmd_tbl_t *get_tpm_commands(unsigned int *size)
+{
+	*size = ARRAY_SIZE(tpm2_commands);
+
+	return tpm2_commands;
+}
+
+U_BOOT_CMD(tpm, CONFIG_SYS_MAXARGS, 1, do_tpm, "Issue a TPMv2.x command",
+"<command> [<arguments>]\n"
+"\n"
+"info\n"
+"    Show information about the TPM.\n"
+"init\n"
+"    Initialize the software stack. Always the first command to issue.\n"
+);