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danielinuxdanielinux
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First version of the bootloader
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Lines changed: 5888 additions & 8 deletions

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‎.gitignore‎

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*.su
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*.idb
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*.pdb
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*.gdb
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# automatically generated keys
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*.der
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*.pem
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# automatically generated source files
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src/ed25519_pub_key.c
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# tags etc.
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cscope.out
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tags
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# Kernel Module Compile Results
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*.mod*
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*.cmd
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.tmp_versions/
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modules.order
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Module.symvers
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Mkfile.old
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dkms.conf

‎.gitmodules‎

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[submodule "lib/wolfssl"]
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path = lib/wolfssl
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url = https://github.com/wolfSSL/wolfssl.git

‎Makefile‎

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CROSS_COMPILE:=arm-none-eabi-
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CC:=$(CROSS_COMPILE)gcc
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LD:=$(CROSS_COMPILE)gcc
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OBJCOPY:=$(CROSS_COMPILE)objcopy
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SIZE:=$(CROSS_COMPILE)size
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BOOT_IMG?=test-app/image.bin
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BOOTLOADER_SIZE?=0x10000
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SIGN?=ED25519
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TARGET?=stm32f4
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DEBUG?=0
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LSCRIPT:=hal/$(TARGET).ld
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OBJS:= \
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./hal/$(TARGET).o \
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./lib/bootutil/src/loader.o \
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./lib/bootutil/src/image_validate.o \
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./lib/bootutil/src/bootutil_misc.o \
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./src/run.o \
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./src/mem.o \
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./src/keys.o \
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./src/crypto.o \
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./src/startup_bl.o \
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./src/main.o \
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./lib/wolfssl/wolfcrypt/src/sha256.o \
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./lib/wolfssl/wolfcrypt/src/hash.o \
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./lib/wolfssl/wolfcrypt/src/wolfmath.o \
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./lib/wolfssl/wolfcrypt/src/fe_low_mem.o
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CFLAGS:=-mcpu=cortex-m3 -mthumb -Wall -Wno-main -Wstack-usage=1024 -ffreestanding -Wno-unused \
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-Ilib/bootutil/include -Iinclude/ -Ilib/wolfssl -nostartfiles \
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-DBOOT_MAX_IMG_SECTORS=256 -DWOLFBOOT_VALIDATE_SLOT0 -DWOLFBOOT_USE_FLASHAREA_GET_SECTORS \
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-nostdlib \
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-DWOLFSSL_USER_SETTINGS \
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-DPLATFORM_$(TARGET)
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ifeq ($(SIGN),ED25519)
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OBJS+= ./lib/wolfssl/wolfcrypt/src/sha512.o \
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./lib/wolfssl/wolfcrypt/src/ed25519.o \
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./lib/wolfssl/wolfcrypt/src/ge_low_mem.o \
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./src/ed25519_pub_key.o
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CFLAGS+=-DBOOT_SIGN_ED25519
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endif
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ifeq ($(SIGN),EC256)
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OBJS+= ./ext/wolfssl/wolfcrypt/src/ecc.o
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CFLAGS+=-DBOOT_SIGN_EC256
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endif
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ifeq ($(DEBUG),1)
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CFLAGS+=-O0 -g -ggdb3 -DDEBUG=1
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else
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CFLAGS+=-Os
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endif
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LDFLAGS:=-T $(LSCRIPT) -Wl,-gc-sections -Wl,-Map=wolfboot.map -ffreestanding -nostartfiles -mcpu=cortex-m3 -mthumb -nostdlib
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all: factory.bin
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wolfboot.bin: wolfboot.elf
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$(OBJCOPY) -O binary $^ $@
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$(SIZE) wolfboot.elf
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align: wolfboot-align.bin
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wolfboot-align.bin: wolfboot.elf
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$(OBJCOPY) -O binary $^ $@ --pad-to=$(BOOTLOADER_SIZE) --gap-fill=255
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$(SIZE) wolfboot.elf
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test-app/image.bin:
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make -C test-app TARGET=$(TARGET)
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tools/ed25519/ed25519_sign:
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make -C tools/ed25519
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ed25519.der: tools/ed25519/ed25519_sign
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tools/ed25519/ed25519_keygen src/ed25519_pub_key.c
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factory.bin: $(BOOT_IMG) wolfboot-align.bin tools/ed25519/ed25519_sign ed25519.der
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tools/ed25519/ed25519_sign $(BOOT_IMG) ed25519.der 1
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cat wolfboot-align.bin $(BOOT_IMG).v1.signed > $@
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second.img: $(BOOT_IMG) wolfboot-align.bin tools/ed25519/ed25519_sign ed25519.der
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tools/ed25519/ed25519_sign $(BOOT_IMG) ed25519.der 1 65536
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tools/ed25519/ed25519_sign $(BOOT_IMG) ed25519.der 2
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cat wolfboot-align.bin $(BOOT_IMG).v1.signed $(BOOT_IMG).v2.signed > $@
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wolfboot.elf: $(OBJS) $(LSCRIPT)
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grep stat $(OBJS)
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$(LD) $(LDFLAGS) -Wl,--start-group $(OBJS) -Wl,--end-group -o $@
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src/ed25519_pub_key.c: ed25519.der
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keys: ed25519.der
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clean:
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rm -f *.bin *.elf $(OBJS) wolfboot.map *.bin
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make -C test-app clean
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distclean: clean
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make -C tools/ed25519 clean
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rm -f *.pem *.der tags ./src/ed25519_pub_key.c
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‎NOTICE‎

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wolfBoot - copyright (c) wolfSSL Inc.
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wolfBoot is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2, as published by
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the Free Software Foundation.
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wolfBoot, wolfSSL (formerly known as CyaSSL) and wolfCrypt are either licensed for use
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under the GPLv2 or a standard commercial license. For our users who cannot use
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wolfSSL under GPLv2, a commercial license to wolfBoot, wolfSSL and wolfCrypt is available.
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Please contact wolfSSL Inc. directly at:
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Email: licensing@wolfssl.com
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Phone: +1 425 245-8247
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More information can be found on the wolfSSL website at www.wolfssl.com.
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This product includes software developed at
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The Apache Software Foundation (http://www.apache.org/)
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and previously released under an Open Source permissive license.
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Portions of this software were developed at
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Runtime Inc, copyright 2015 and previously released under an Open Source permissive license.

‎hal/nrf52.c‎

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/* nrf52.c
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*
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* Copyright (C) 2018 wolfSSL Inc.
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*
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* This file is part of wolfBoot.
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*
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* wolfBoot is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfBoot is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#include <stdint.h>
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/* Assembly helpers */
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#define DMB() __asm__ volatile ("dmb")
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/* Instantiation */
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#define CLOCK_CONTROL_BASE (0x40000000)
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#define NVMC_BASE (0x4001E000)
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/* Flash write/erase control */
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#define NVMC_CONFIG *((volatile uint32_t *)(NVMC_BASE + 0x504))
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#define NVMC_ERASEPAGE *((volatile uint32_t *)(NVMC_BASE + 0x508))
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#define NVMC_READY *((volatile uint32_t *)(NVMC_BASE + 0x400))
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#define NVMC_CONFIG_REN 0
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#define NVMC_CONFIG_WEN 1
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#define NVMC_CONFIG_EEN 2
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#define FLASH_PAGE_SIZE (4096)
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/* Clock control */
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#define TASKS_HFCLKSTART *((volatile uint32_t *)(CLOCK_CONTROL_BASE + 0x000))
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#define TASKS_HFCLKSTOP *((volatile uint32_t *)(CLOCK_CONTROL_BASE + 0x004))
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#define TASKS_HFCLKSTARTED *((volatile uint32_t *)(CLOCK_CONTROL_BASE + 0x100))
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static void flash_wait_complete(void)
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{
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while (NVMC_READY == 0)
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;
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}
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int hal_flash_write(uint32_t address, const uint8_t *data, int len)
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{
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int i;
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uint32_t val;
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NVMC_CONFIG = NVMC_CONFIG_WEN;
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flash_wait_complete();
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/* Set 8-bit write */
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for (i = 0; i < len; i++) {
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((uint8_t *)(address))[i] = data[i];
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flash_wait_complete();
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}
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return 0;
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}
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void hal_flash_unlock(void)
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{
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}
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void hal_flash_lock(void)
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{
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}
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int hal_flash_erase(uint32_t address, int len)
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{
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int start = -1, end = -1, i;
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uint32_t end_address = address + len;
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start = (address / FLASH_PAGE_SIZE);
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if (start == 0)
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return -1;
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end = end_address / FLASH_PAGE_SIZE;
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NVMC_CONFIG = NVMC_CONFIG_EEN;
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flash_wait_complete();
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for (i = start; i <= end; i++) {
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NVMC_ERASEPAGE = i;
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flash_wait_complete();
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}
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return 0;
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}
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void hal_init(void)
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{
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TASKS_HFCLKSTART = 1;
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while(TASKS_HFCLKSTARTED == 0)
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;
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}
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void hal_prepare_boot(void)
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{
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TASKS_HFCLKSTOP = 1;
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}
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‎hal/nrf52.ld‎

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MEMORY
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{
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FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x001FFE0
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RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00010000
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}
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SECTIONS
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{
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.text :
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{
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_start_text = .;
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KEEP(*(.isr_vector))
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*(.text*)
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*(.rodata*)
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*(.init*)
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*(.fini*)
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. = ALIGN(4);
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_end_text = .;
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} > FLASH
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.edidx :
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{
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. = ALIGN(4);
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*(.ARM.exidx*)
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} > FLASH
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_stored_data = .;
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.data : AT (_stored_data)
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{
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_start_data = .;
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KEEP(*(.data*))
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. = ALIGN(4);
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_end_data = .;
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} > RAM
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.bss (NOLOAD) :
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{
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_start_bss = .;
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__bss_start__ = .;
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*(.bss*)
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*(COMMON)
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. = ALIGN(4);
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_end_bss = .;
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__bss_end__ = .;
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_end = .;
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} > RAM
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. = ALIGN(4);
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}
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END_STACK = ORIGIN(RAM) + LENGTH(RAM);

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