This patch adds code to lib to enable sharing of useful OPTEE code between
board-ports and architectures. The code on lib/optee/optee.c comes from the
TI omap2 port. Eventually the OMAP2 code will be patched to include the
shared code. The intention here is to add more useful OPTEE specific code
as more functionality gets added.
Signed-off-by: Bryan O'Donoghue <bryan.odonog...@linaro.org>
Cc: Harinarayan Bhatta <harinara...@ti.com>
Cc: Andrew F. Davis <a...@ti.com>
Cc: Tom Rini <tr...@konsulko.com>
Cc: Kever Yang <kever.y...@rock-chips.com>
Cc: Philipp Tomsich <philipp.toms...@theobroma-systems.com>
Cc: Peng Fan <peng....@nxp.com>
Tested-by: Peng Fan <peng....@nxp.com>
---
include/tee/optee.h | 16 ++++++++++++++++
lib/Kconfig | 1 +
lib/Makefile | 1 +
lib/optee/Kconfig | 8 ++++++++
lib/optee/Makefile | 7 +++++++
lib/optee/optee.c | 37 +++++++++++++++++++++++++++++++++++++
6 files changed, 70 insertions(+)
create mode 100644 lib/optee/Kconfig
create mode 100644 lib/optee/Makefile
create mode 100644 lib/optee/optee.c
diff --git a/include/tee/optee.h b/include/tee/optee.h
index 9ab0d08..8943afb 100644
--- a/include/tee/optee.h
+++ b/include/tee/optee.h
@@ -10,6 +10,8 @@
#ifndef _OPTEE_H
#define _OPTEE_H
+#include <linux/errno.h>
+
#define OPTEE_MAGIC 0x4554504f
#define OPTEE_VERSION 1
#define OPTEE_ARCH_ARM32 0
@@ -27,4 +29,18 @@ struct optee_header {
uint32_t paged_size;
};
+#if defined(CONFIG_OPTEE)
+int optee_verify_image(struct optee_header *hdr, unsigned long tzdram_start,
+ unsigned long tzdram_len, unsigned long image_len);
+#else
+static inline int optee_verify_image(struct optee_header *hdr,
+ unsigned long tzdram_start,
+ unsigned long tzdram_len,
+ unsigned long image_len)
+{
+ return -EPERM;
+}
+
+#endif
+
#endif /* _OPTEE_H */
diff --git a/lib/Kconfig b/lib/Kconfig
index 00ac650..2077f9c 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -288,5 +288,6 @@ endmenu
source lib/efi/Kconfig
source lib/efi_loader/Kconfig
+source lib/optee/Kconfig
endmenu
diff --git a/lib/Makefile b/lib/Makefile
index 8cd779f..46813b6 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_FIT) += libfdt/
obj-$(CONFIG_OF_LIVE) += of_live.o
obj-$(CONFIG_CMD_DHRYSTONE) += dhry/
obj-$(CONFIG_ARCH_AT91) += at91/
+obj-$(CONFIG_OPTEE) += optee/
obj-$(CONFIG_AES) += aes.o
obj-y += charset.o
diff --git a/lib/optee/Kconfig b/lib/optee/Kconfig
new file mode 100644
index 0000000..2e406fe
--- /dev/null
+++ b/lib/optee/Kconfig
@@ -0,0 +1,8 @@
+config OPTEE
+ bool "Support OPTEE images"
+ help
+ U-Boot can be configured to boot OPTEE images.
+ Selecting this option will enable shared OPTEE library code and
+ enable an OPTEE specific bootm command that will perform additional
+ OPTEE specific checks before booting an OPTEE image created with
+ mkimage.
diff --git a/lib/optee/Makefile b/lib/optee/Makefile
new file mode 100644
index 0000000..03e832f
--- /dev/null
+++ b/lib/optee/Makefile
@@ -0,0 +1,7 @@
+#
+# (C) Copyright 2017 Linaro
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-$(CONFIG_OPTEE) += optee.o
diff --git a/lib/optee/optee.c b/lib/optee/optee.c
new file mode 100644
index 0000000..64ceacd
--- /dev/null
+++ b/lib/optee/optee.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2017 Linaro
+ * Bryan O'Donoghue <bryan.odonog...@linaro.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <tee/optee.h>
+
+#define optee_hdr_err_msg "OPTEE verification error tzdram 0x%08lx-0x%08lx " \
+ "header lo=0x%08x hi=0x%08x size=0x%08x\n"
+
+int optee_verify_image(struct optee_header *hdr, unsigned long tzdram_start,
+ unsigned long tzdram_len, unsigned long image_len)
+{
+ unsigned long tzdram_end = tzdram_start + tzdram_len;
+ uint32_t tee_file_size;
+
+ tee_file_size = hdr->init_size + hdr->paged_size +
+ sizeof(struct optee_header);
+
+ if (hdr->magic != OPTEE_MAGIC ||
+ hdr->version != OPTEE_VERSION ||
+ hdr->init_load_addr_hi > tzdram_end ||
+ hdr->init_load_addr_lo < tzdram_start ||
+ tee_file_size > tzdram_len ||
+ tee_file_size != image_len ||
+ (hdr->init_load_addr_lo + tee_file_size) > tzdram_end) {
+ printf(optee_hdr_err_msg, tzdram_start, tzdram_end,
+ hdr->init_load_addr_lo, hdr->init_load_addr_hi,
+ tee_file_size);
+ return -EINVAL;
+ }
+
+ return 0;
+}
--
2.7.4
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