drivers: Add support to retrieve plat_toc_flags
Add support to retrieve plat_toc_flags value from FIP header flags.
plat_toc_flags is for platform specific use. It is stored in
FIP header by fiptool using --plat-toc-flags option.
Change-Id: Ibadd91b4f28e6503f4426e4efd404bbe512ad124
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Sheetal Tigadoli <sheetal.tigadoli@broadcom.com>
diff --git a/drivers/io/io_fip.c b/drivers/io/io_fip.c
index 5d49fff..02f85d6 100644
--- a/drivers/io/io_fip.c
+++ b/drivers/io/io_fip.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2014-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -46,6 +46,7 @@
*/
typedef struct {
uintptr_t dev_spec;
+ uint16_t plat_toc_flag;
} fip_dev_state_t;
static const uuid_t uuid_null;
@@ -220,6 +221,11 @@
uintptr_t backend_handle;
fip_toc_header_t header;
size_t bytes_read;
+ fip_dev_state_t *state;
+
+ assert(dev_info != NULL);
+
+ state = (fip_dev_state_t *)dev_info->info;
/* Obtain a reference to the image by querying the platform layer */
result = plat_get_image_source(image_id, &backend_dev_handle,
@@ -248,6 +254,11 @@
result = -ENOENT;
} else {
VERBOSE("FIP header looks OK.\n");
+ /*
+ * Store 16-bit Platform ToC flags field which occupies
+ * bits [32-47] in fip header.
+ */
+ state->plat_toc_flag = (header.flags >> 32) & 0xffff;
}
}
@@ -453,3 +464,17 @@
return result;
}
+
+/* Function to retrieve plat_toc_flags, previously saved in FIP dev */
+int fip_dev_get_plat_toc_flag(io_dev_info_t *dev_info, uint16_t *plat_toc_flag)
+{
+ fip_dev_state_t *state;
+
+ assert(dev_info != NULL);
+
+ state = (fip_dev_state_t *)dev_info->info;
+
+ *plat_toc_flag = state->plat_toc_flag;
+
+ return 0;
+}
diff --git a/include/drivers/io/io_fip.h b/include/drivers/io/io_fip.h
index e0b5746..7e65436 100644
--- a/include/drivers/io/io_fip.h
+++ b/include/drivers/io/io_fip.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -10,5 +10,6 @@
struct io_dev_connector;
int register_io_dev_fip(const struct io_dev_connector **dev_con);
+int fip_dev_get_plat_toc_flag(io_dev_info_t *dev_info, uint16_t *plat_toc_flag);
#endif /* IO_FIP_H */