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Updated README.md to include instructions for how to build on a different ARM architecture (like Raspberry Pi CortexA53). Moved the -T into SRC_LD so its easier to disable.

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This commit is contained in:
David Garske
2017-09-22 15:15:48 -07:00
parent 6058362970
commit c4052607d7
2 changed files with 18 additions and 3 deletions
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4
IDE/GCC-ARM/Makefile.common
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@@ -12,7 +12,7 @@ INC = -I./Header \
-I../.. -I../..
# Memory Map # Memory Map
SRC_LD = ./linker.ld SRC_LD = -T./linker.ld
# Defines # Defines
DEF = -DWOLFSSL_USER_SETTINGS DEF = -DWOLFSSL_USER_SETTINGS
@@ -85,7 +85,7 @@ $(BUILD_DIR)/%.o: %.c
$(BUILD_DIR)/$(BIN).elf: $(OBJS_ASM) $(OBJS_C) $(BUILD_DIR)/$(BIN).elf: $(OBJS_ASM) $(OBJS_C)
@echo "Linking ELF binary: $(notdir $@)" @echo "Linking ELF binary: $(notdir $@)"
$(CMD_ECHO) $(LD) $(LDFLAGS) -T$(SRC_LD) -o $@ $^ $(LIBS) $(CMD_ECHO) $(LD) $(LDFLAGS) $(SRC_LD) -o $@ $^ $(LIBS)
@echo "Generating name list: $(BIN).sym" @echo "Generating name list: $(BIN).sym"
$(CMD_ECHO) $(NM) -n $@ > $(BUILD_DIR)/$(BIN).sym $(CMD_ECHO) $(NM) -n $@ > $(BUILD_DIR)/$(BIN).sym

17
IDE/GCC-ARM/README.md
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@@ -17,9 +17,22 @@ This example is for Cortex M series, but can be adopted for other architectures.
* Use correct architecture 'ARCHFLAGS' (default is cortex-m0 / thumb). See [GCC ARM Options](https://gcc.gnu.org/onlinedocs/gcc-4.7.3/gcc/ARM-Options.html) `-mcpu=name`. * Use correct architecture 'ARCHFLAGS' (default is cortex-m0 / thumb). See [GCC ARM Options](https://gcc.gnu.org/onlinedocs/gcc-4.7.3/gcc/ARM-Options.html) `-mcpu=name`.
3. Use `make` and it will build the static library and wolfCrypt test/benchmark and wolfSSL TLS client targets as `.elf` and `.hex` in `/Build`. 3. Use `make` and it will build the static library and wolfCrypt test/benchmark and wolfSSL TLS client targets as `.elf` and `.hex` in `/Build`.
Example: ### Building for Raspberry Pi
Example `Makefile.common` changes for Rasperry Pi with Cortex-A53:
1. Change ARCHFLAGS to `ARCHFLAGS = -mcpu=cortex-a53 -mthumb -mabi=aapcs` to specify Cortex-A53.
2. Comment out `SRC_LD`, since custom memory map is not applicable.
3. Clear `TOOLCHAIN`, so it will use default `gcc`. Set `TOOLCHAIN = `
4. Comment out `LDFLAGS += --specs=nano.specs --specs=nosys.specs` to disable newlib-nano.
Note: To comment out a line in a Makefile use place `#` in front of line.
### Example Build
``` ```
make clean && make
text data bss dec hex filename text data bss dec hex filename
50076 2508 44 52628 cd94 ./Build/WolfCryptTest.elf 50076 2508 44 52628 cd94 ./Build/WolfCryptTest.elf
@@ -32,6 +45,8 @@ Example:
## Performace Tuning Options ## Performace Tuning Options
These settings are located in `Header/user_settings.h`.
* `DEBUG_WOLFSSL`: Undefine this to disable debug logging. * `DEBUG_WOLFSSL`: Undefine this to disable debug logging.
* `NO_ERROR_STRINGS`: Disables error strings to save code space. * `NO_ERROR_STRINGS`: Disables error strings to save code space.
* `NO_INLINE`: Disabling inline function saves about 1KB, but is slower. * `NO_INLINE`: Disabling inline function saves about 1KB, but is slower.