ROMLIB bug fixes
Fixed the below bugs:
1) Bug related to build flag V=1: if the flag was V=0, building with
ROMLIB would fail.
2) Due to a syntax bug in genwrappers.sh, index file entries marked as
"patch" or "reserved" were ignored.
3) Added a prepending hash to constants that genwrappers is generating.
4) Due to broken dependencies, currently the inclusion functionality is
intentionally not utilised. This is why the contents of romlib/jmptbl.i
have been copied to platform specific jmptbl.i files. As a result of the
broken dependencies, when changing the index files, e.g. patching
functions, a clean build is always required. This is a known issue that
will be fixed in the future.
Change-Id: I9d92aa9724e86d8f90fcd3e9f66a27aa3cab7aaa
Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>
diff --git a/docs/romlib-design.rst b/docs/romlib-design.rst
index 34a7980..4195721 100644
--- a/docs/romlib-design.rst
+++ b/docs/romlib-design.rst
@@ -85,12 +85,12 @@
1. ``gentbl.sh`` - Generates the jump table by parsing the index file.
2. ``genvar.sh`` - Generates the jump table global variable (**not** the jump
-table itself) with the absolute address in ROM. This global variable is,
-basically, a pointer to the jump table.
+ table itself) with the absolute address in ROM. This global variable is,
+ basically, a pointer to the jump table.
3. ``genwrappers.sh`` - Generates a wrapper function for each entry in the index
-file except for the ones that contain the keyword ``patch``. The generated
-wrapper file is called ``<lib>_<fn_name>.S``.
+ file except for the ones that contain the keyword ``patch``. The generated
+ wrapper file is called ``<lib>_<fn_name>.S``.
Patching of functions in library at ROM
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -108,6 +108,8 @@
~~~~~~~~~~~~~~~~~~~~~
The environment variable ``CROSS_COMPILE`` must be set as per the user guide.
+In the below example the usage of ROMLIB together with mbed TLS is demonstrated
+to showcase the benefits of library at ROM - it's not mandatory.
::
@@ -120,6 +122,12 @@
USE_ROMLIB=1 \
all fip
+Known issue
+-----------
+When building library at ROM, a clean build is always required. This is
+necessary when changes are made to the index files, e.g. adding new functions,
+patching existing ones etc.
+
--------------
*Copyright (c) 2019, Arm Limited. All rights reserved.*
diff --git a/lib/romlib/Makefile b/lib/romlib/Makefile
index 0e5d447..12fdfa8 100644
--- a/lib/romlib/Makefile
+++ b/lib/romlib/Makefile
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@@ -58,18 +58,15 @@
@echo " VAR $@"
$(Q)./genvar.sh -o $@ $(BUILD_DIR)/romlib.elf
-$(LIB_DIR)/libwrappers.a: jmptbl.i $(WRAPPER_DIR)/jmpvar.o
+$(LIB_DIR)/libwrappers.a: $(BUILD_DIR)/jmptbl.i $(WRAPPER_DIR)/jmpvar.o
@echo " AR $@"
$(Q)./genwrappers.sh -b $(WRAPPER_DIR) -o $@ $(BUILD_DIR)/jmptbl.i
-$(BUILD_DIR)/jmptbl.s: jmptbl.i
+$(BUILD_DIR)/jmptbl.i: $(BUILD_DIR)/jmptbl.s
+
+$(BUILD_DIR)/jmptbl.s: ../../$(PLAT_DIR)/jmptbl.i
@echo " TBL $@"
- if [ -e "../../$(PLAT_DIR)/jmptbl.i" ] ; \
- then \
- $(Q)./gentbl.sh -o $@ -b $(BUILD_DIR) ../../$(PLAT_DIR)/jmptbl.i; \
- else \
- @echo "USE_ROMLIB=1 requires jump table list file: jmptbl.i in platform directory"; \
- fi
+ $(Q)./gentbl.sh -o $@ -b $(BUILD_DIR) ../../$(PLAT_DIR)/jmptbl.i
clean:
@rm -f $(BUILD_DIR)/*
diff --git a/lib/romlib/genwrappers.sh b/lib/romlib/genwrappers.sh
index 746e4ba..07d59ac 100755
--- a/lib/romlib/genwrappers.sh
+++ b/lib/romlib/genwrappers.sh
@@ -1,5 +1,5 @@
#!/bin/sh
-# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
@@ -31,7 +31,7 @@
done
awk '{sub(/[:blank:]*#.*/,"")}
-!/^$/ && !/\\tpatch$/ !/\\treserved$/ {print $1*4, $2, $3}' "$@" |
+!/^$/ && $NF != "patch" && $NF != "reserved" {print $1*4, $2, $3}' "$@" |
while read idx lib sym
do
file=$build/${lib}_$sym
@@ -41,7 +41,7 @@
$sym:
ldr x17, =jmptbl
ldr x17, [x17]
- mov x16, $idx
+ mov x16, #$idx
add x16, x16, x17
br x16
EOF
diff --git a/plat/arm/board/fvp/jmptbl.i b/plat/arm/board/fvp/jmptbl.i
index 8d232d5..bfa9b56 100644
--- a/plat/arm/board/fvp/jmptbl.i
+++ b/plat/arm/board/fvp/jmptbl.i
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@@ -14,4 +14,32 @@
# rom rom_lib_init
# fdt fdt_getprop_namelen patch
-include ../../lib/romlib/jmptbl.i
+rom rom_lib_init
+fdt fdt_getprop_namelen
+fdt fdt_setprop_inplace
+fdt fdt_check_header
+fdt fdt_node_offset_by_compatible
+mbedtls mbedtls_asn1_get_alg
+mbedtls mbedtls_asn1_get_alg_null
+mbedtls mbedtls_asn1_get_bitstring_null
+mbedtls mbedtls_asn1_get_bool
+mbedtls mbedtls_asn1_get_int
+mbedtls mbedtls_asn1_get_tag
+mbedtls mbedtls_free
+mbedtls mbedtls_md
+mbedtls mbedtls_md_get_size
+mbedtls mbedtls_memory_buffer_alloc_init
+mbedtls mbedtls_oid_get_md_alg
+mbedtls mbedtls_oid_get_numeric_string
+mbedtls mbedtls_oid_get_pk_alg
+mbedtls mbedtls_oid_get_sig_alg
+mbedtls mbedtls_pk_free
+mbedtls mbedtls_pk_init
+mbedtls mbedtls_pk_parse_subpubkey
+mbedtls mbedtls_pk_verify_ext
+mbedtls mbedtls_platform_set_snprintf
+mbedtls mbedtls_x509_get_rsassa_pss_params
+mbedtls mbedtls_x509_get_sig_alg
+mbedtls mbedtls_md_info_from_type
+c exit
+c atexit
diff --git a/plat/arm/board/juno/jmptbl.i b/plat/arm/board/juno/jmptbl.i
index 8d232d5..bfa9b56 100644
--- a/plat/arm/board/juno/jmptbl.i
+++ b/plat/arm/board/juno/jmptbl.i
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@@ -14,4 +14,32 @@
# rom rom_lib_init
# fdt fdt_getprop_namelen patch
-include ../../lib/romlib/jmptbl.i
+rom rom_lib_init
+fdt fdt_getprop_namelen
+fdt fdt_setprop_inplace
+fdt fdt_check_header
+fdt fdt_node_offset_by_compatible
+mbedtls mbedtls_asn1_get_alg
+mbedtls mbedtls_asn1_get_alg_null
+mbedtls mbedtls_asn1_get_bitstring_null
+mbedtls mbedtls_asn1_get_bool
+mbedtls mbedtls_asn1_get_int
+mbedtls mbedtls_asn1_get_tag
+mbedtls mbedtls_free
+mbedtls mbedtls_md
+mbedtls mbedtls_md_get_size
+mbedtls mbedtls_memory_buffer_alloc_init
+mbedtls mbedtls_oid_get_md_alg
+mbedtls mbedtls_oid_get_numeric_string
+mbedtls mbedtls_oid_get_pk_alg
+mbedtls mbedtls_oid_get_sig_alg
+mbedtls mbedtls_pk_free
+mbedtls mbedtls_pk_init
+mbedtls mbedtls_pk_parse_subpubkey
+mbedtls mbedtls_pk_verify_ext
+mbedtls mbedtls_platform_set_snprintf
+mbedtls mbedtls_x509_get_rsassa_pss_params
+mbedtls mbedtls_x509_get_sig_alg
+mbedtls mbedtls_md_info_from_type
+c exit
+c atexit