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| author | Anup Patel <anup.patel@wdc.com> | 2020-05-25 14:42:35 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2020-06-05 09:02:59 +0530 |
| commit | 4e3876d5be1118aae5318c91e431e8cfedf580b1 (patch) | |
| tree | 0c0589d3909f20881336d189aa64c1abee95733f | |
| parent | c6c65ee8614d51395242c0500b4419dfa35a4e33 (diff) | |
Makefile: Add mechanism for platforms to have multiple builtin DTBs
Currently, we can only include one DTB as builtin for a platform
using FDT_PAYLOAD_DTB make variable in platform config.mk.
This patch adds new mechanism using which we can convert any DTS
file to C source and futher compile-n-link it with libplatsbi.a.
The generated C source will have the DTB contents as an array
"const char <varprefix>_start[]" where <varprefix> is specified
in platform objects.mk makefile.
Example1
--------
If we have built-in k210.dts and desired <varprefix> is
"dt_k210" then specify following in platform objects.mk:
platform-objs-y += k210.o
platform-varprefix-k210.o = dt_k210
Example2
--------
If we have built-in abc/k210.dts and desired <varprefix> is
"dt_abc_k210" then specify following in platform objects.mk:
platform-objs-y += abc/k210.o
platform-varprefix-abc-k210.o = dt_abc_k210
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
| -rw-r--r-- | Makefile | 17 | ||||
| -rwxr-xr-x | scripts/d2c.sh | 67 |
2 files changed, 84 insertions, 0 deletions
@@ -290,6 +290,12 @@ compile_objcopy = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \ compile_dts = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \ echo " DTC $(subst $(build_dir)/,,$(1))"; \ $(CPP) $(DTSCPPFLAGS) $(2) | $(DTC) -O dtb -i `dirname $(2)` -o $(1) +compile_d2c = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \ + echo " D2C $(subst $(build_dir)/,,$(1))"; \ + $(src_dir)/scripts/d2c.sh -i $(4) -a $(3) -p $(2) > $(1) +compile_gen_dep = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \ + echo " GEN-DEP $(subst $(build_dir)/,,$(1))"; \ + echo "$(1:.dep=$(2)): $(3)" >> $(1) targets-y = $(build_dir)/lib/libsbi.a targets-y += $(build_dir)/lib/libsbiutils.a @@ -342,12 +348,23 @@ $(platform_build_dir)/%.dep: $(platform_src_dir)/%.c $(platform_build_dir)/%.o: $(platform_src_dir)/%.c $(call compile_cc,$@,$<) +$(platform_build_dir)/%.o: $(platform_build_dir)/%.c + $(call compile_cc,$@,$<) + $(platform_build_dir)/%.dep: $(platform_src_dir)/%.S $(call compile_as_dep,$@,$<) $(platform_build_dir)/%.o: $(platform_src_dir)/%.S $(call compile_as,$@,$<) +$(platform_build_dir)/%.dep: $(platform_src_dir)/%.dts + $(call compile_gen_dep,$@,.dtb,$<) + $(call compile_gen_dep,$@,.c,$(@:.dep=.dtb)) + $(call compile_gen_dep,$@,.o,$(@:.dep=.c)) + +$(platform_build_dir)/%.c: $(platform_build_dir)/%.dtb + $(call compile_d2c,$@,$(platform-varprefix-$(subst .dtb,.o,$(subst /,-,$(subst $(platform_build_dir)/,,$<)))),16,$<) + $(platform_build_dir)/%.dtb: $(platform_src_dir)/%.dts $(call compile_dts,$@,$<) diff --git a/scripts/d2c.sh b/scripts/d2c.sh new file mode 100755 index 0000000..821a995 --- /dev/null +++ b/scripts/d2c.sh @@ -0,0 +1,67 @@ +#!/bin/bash + +function usage() +{ + echo "Usage:" + echo " $0 [options]" + echo "Options:" + echo " -h Display help or usage" + echo " -i <input_file_path> Input binary file path" + echo " -a <c_align> Output C array alignment" + echo " -p <c_prefix> Output C array name prefix" + exit 1; +} + +# Command line options +INPUT_PATH="" +OUTPUT_C_ALIGN="" +OUTPUT_C_PREFIX="" + +while getopts "hi:a:p:o:" o; do + case "${o}" in + h) + usage + ;; + i) + INPUT_PATH=${OPTARG} + ;; + a) + OUTPUT_C_ALIGN=${OPTARG} + ;; + p) + OUTPUT_C_PREFIX=${OPTARG} + ;; + *) + usage + ;; + esac +done +shift $((OPTIND-1)) + +if [ -z "${INPUT_PATH}" ]; then + echo "Must specify input file path" + usage +fi + +if [ ! -f "${INPUT_PATH}" ]; then + echo "The input path should be a file" + usage +fi + +if [ -z "${OUTPUT_C_ALIGN}" ]; then + echo "Must provide output C array alignment" + usage +fi + +if [ -z "${OUTPUT_C_PREFIX}" ]; then + echo "Must provide output C array name prefix" + usage +fi + +printf "const char __attribute__((aligned(%s))) %s_start[] = {\n" "${OUTPUT_C_ALIGN}" "${OUTPUT_C_PREFIX}" + +od -v -t x1 -An ${INPUT_PATH} | awk '{for (i=1; i<=NF; i++) printf " 0x%s,", $i; printf "\n"; }' + +printf "};\n" + +printf "const unsigned long %s_size = sizeof(%s_start);\n" "${OUTPUT_C_PREFIX}" "${OUTPUT_C_PREFIX}" |