[U-Boot] [PATCH] ARM: mxs: tools: Add mkimage support for MXS bootstream
Marek Vasut
marex at denx.de
Wed Jul 31 15:50:55 CEST 2013
Add mkimage support for generating and verifying MXS bootstream.
The implementation here is mostly a glue code between MXSSB v0.4
and mkimage, but the long-term goal is to rectify this and merge
MXSSB with mkimage more tightly. Once this code is properly in
U-Boot, MXSSB shall be deprecated in favor of mkimage-mxsimage
support.
Note that the mxsimage generator needs libcrypto from OpenSSL, I
therefore enabled the libcrypto/libssl unconditionally.
MXSSB: http://git.denx.de/?p=mxssb.git;a=summary
Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Tom Rini <trini at ti.com>
Cc: Fabio Estevam <fabio.estevam at freescale.com>
Cc: Stefano Babic <sbabic at denx.de>
Cc: Otavio Salvador <otavio at ossystems.com.br>
---
arch/arm/cpu/arm926ejs/mxs/mxsimage.mx23.cfg | 6 +
arch/arm/cpu/arm926ejs/mxs/mxsimage.mx28.cfg | 8 +
common/image.c | 1 +
config.mk | 2 +-
doc/README.mxsimage | 165 ++
include/image.h | 1 +
tools/Makefile | 2 +
tools/mkimage.c | 2 +
tools/mkimage.h | 2 +
tools/mxsimage.c | 2315 ++++++++++++++++++++++++++
tools/mxsimage.h | 203 +++
11 files changed, 2706 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/cpu/arm926ejs/mxs/mxsimage.mx23.cfg
create mode 100644 arch/arm/cpu/arm926ejs/mxs/mxsimage.mx28.cfg
create mode 100644 doc/README.mxsimage
create mode 100644 tools/mxsimage.c
create mode 100644 tools/mxsimage.h
NOTE: The code does likely contain a few dozens of checkpatch
errors, but to allow me to easily sync this with MXSSB,
I am not fixing those.
diff --git a/arch/arm/cpu/arm926ejs/mxs/mxsimage.mx23.cfg b/arch/arm/cpu/arm926ejs/mxs/mxsimage.mx23.cfg
new file mode 100644
index 0000000..8118767
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/mxs/mxsimage.mx23.cfg
@@ -0,0 +1,6 @@
+SECTION 0x0 BOOTABLE
+ TAG LAST
+ LOAD 0x0 spl/u-boot-spl.bin
+ CALL 0x14 0x0
+ LOAD 0x40000100 u-boot.bin
+ CALL 0x40000100 0x0
diff --git a/arch/arm/cpu/arm926ejs/mxs/mxsimage.mx28.cfg b/arch/arm/cpu/arm926ejs/mxs/mxsimage.mx28.cfg
new file mode 100644
index 0000000..ea772f0
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/mxs/mxsimage.mx28.cfg
@@ -0,0 +1,8 @@
+SECTION 0x0 BOOTABLE
+ TAG LAST
+ LOAD 0x0 spl/u-boot-spl.bin
+ LOAD IVT 0x8000 0x14
+ CALL HAB 0x8000 0x0
+ LOAD 0x40000100 u-boot.bin
+ LOAD IVT 0x8000 0x40000100
+ CALL HAB 0x8000 0x0
diff --git a/common/image.c b/common/image.c
index 56a5a62..2c88091 100644
--- a/common/image.c
+++ b/common/image.c
@@ -135,6 +135,7 @@ static const table_entry_t uimage_type[] = {
{ IH_TYPE_SCRIPT, "script", "Script", },
{ IH_TYPE_STANDALONE, "standalone", "Standalone Program", },
{ IH_TYPE_UBLIMAGE, "ublimage", "Davinci UBL image",},
+ { IH_TYPE_MXSIMAGE, "mxsimage", "Freescale MXS Boot Image",},
{ -1, "", "", },
};
diff --git a/config.mk b/config.mk
index 499eed1..968a1e3 100644
--- a/config.mk
+++ b/config.mk
@@ -194,9 +194,9 @@ LDFLAGS_FINAL += --gc-sections
endif
# TODO(sjg at chromium.org): Is this correct on Mac OS?
-ifdef CONFIG_FIT_SIGNATURE
HOSTLIBS += -lssl -lcrypto
+ifdef CONFIG_FIT_SIGNATURE
# This affects include/image.h, but including the board config file
# is tricky, so manually define this options here.
HOSTCFLAGS += -DCONFIG_FIT_SIGNATURE
diff --git a/doc/README.mxsimage b/doc/README.mxsimage
new file mode 100644
index 0000000..2cd4bd1
--- /dev/null
+++ b/doc/README.mxsimage
@@ -0,0 +1,165 @@
+Freescale i.MX233/i.MX28 SB image generator via mkimage
+=======================================================
+
+This tool allows user to produce SB BootStream encrypted with a zero key.
+Such a BootStream is then bootable on i.MX23/i.MX28.
+
+Usage -- producing image:
+=========================
+The mxsimage tool is targetted to be a simple replacement for the elftosb2 .
+To generate an image, write an image configuration file and run:
+
+ mkimage -A arm -O u-boot -T mxsimage -n <path to configuration file> \
+ <output bootstream file>
+
+The output bootstream file is usually using the .sb file extension. Note
+that the example configuration files for producing bootable BootStream with
+the U-Boot bootloader can be found under arch/arm/boot/cpu/arm926ejs/mxs/
+directory. See the following files:
+
+ mxsimage.mx23.cfg -- This is an example configuration for i.MX23
+ mxsimage.mx28.cfg -- This is an example configuration for i.MX28
+
+Each configuration file uses very simple instruction semantics and a few
+additional rules have to be followed so that a useful image can be produced.
+These semantics and rules will be outlined now.
+
+- Each line of the configuration file contains exactly one instruction.
+- Every numeric value must be encoded in hexadecimal and in format 0xabcdef12 .
+- The configuration file is a concatenation of blocks called "sections" and
+ optionally "DCD blocks" (see below).
+ - Each "section" is started by the "SECTION" instruction.
+ - The "SECTION" instruction has the following semantics:
+
+ SECTION u32_section_number [BOOTABLE]
+ - u32_section_number :: User-selected ID of the section
+ - BOOTABLE :: Sets the section as bootable
+
+ - A bootable section is one from which the BootROM starts executing
+ subsequent instructions or code. Exactly one section must be selected
+ as bootable, usually the one containing the instructions and data to
+ load the bootloader.
+
+ - A "SECTION" must be immediatelly followed by a "TAG" instruction.
+ - The "TAG" instruction has the following semantics:
+
+ TAG [LAST]
+ - LAST :: Flag denoting the last section in the file
+
+ - After a "TAG" unstruction, any of the following instructions may follow
+ in any order and any quantity:
+
+ NOOP
+ - This instruction does nothing
+
+ LOAD u32_address string_filename
+ - Instructs the BootROM to load file pointed by "string_filename" onto
+ address "u32_address".
+
+ LOAD IVT u32_address u32_IVT_entry_point
+ - Crafts and loads IVT onto address "u32_address" with the entry point
+ of u32_IVT_entry_point.
+ - i.MX28-specific instruction!
+
+ LOAD DCD u32_address u32_DCD_block_ID
+ - Loads the DCD block with ID "u32_DCD_block_ID" onto address
+ "u32_address" and executes the contents of this DCD block
+ - i.MX28-specific instruction!
+
+ FILL u32_address u32_pattern u32_length
+ - Starts to write memory from addres "u32_address" with a pattern
+ specified by "u32_pattern". Writes exactly "u32_length" bytes of the
+ pattern.
+
+ JUMP [HAB] u32_address [u32_r0_arg]
+ - Jumps onto memory address specified by "u32_address" by setting this
+ address in PT. The BootROM will pass the "u32_r0_arg" value in ARM
+ register "r0" to the executed code if this option is specified.
+ Otherwise, ARM register "r0" will default to value 0x00000000. The
+ optional "HAB" flag is i.MX28-specific flag turning on the HAB boot.
+
+ CALL [HAB] u32_address [u32_r0_arg]
+ - See JUMP instruction above, as the operation is exactly the same with
+ one difference. The CALL instruction does allow returning into the
+ BootROM from the executed code. U-Boot makes use of this in it's SPL
+ code.
+
+ MODE string_mode
+ - Restart the CPU and start booting from device specified by the
+ "string_mode" argument. The "string_mode" differs for each CPU
+ and can be:
+ i.MX23, string_mode = USB/I2C/SPI1_FLASH/SPI2_FLASH/NAND_BCH
+ JTAG/SPI3_EEPROM/SD_SSP0/SD_SSP1
+ i.MX28, string_mode = USB/I2C/SPI2_FLASH/SPI3_FLASH/NAND_BCH
+ JTAG/SPI2_EEPROM/SD_SSP0/SD_SSP1
+
+ - An optional "DCD" blocks can be added at the begining of the configuration
+ file. Note that the DCD is only supported on i.MX28.
+ - The DCD blocks must be inserted before the first "section" in the
+ configuration file.
+ - The DCD block has the following semantics:
+
+ DCD u32_DCD_block_ID
+ - u32_DCD_block_ID :: The ID number of the DCD block, must match
+ the ID number used by "LOAD DCD" instruction.
+
+ - The DCD block must be followed by one of the following instructions. All
+ of the instructions operate either on 1, 2 or 4 bytes. This is selected by
+ the 'n' suffix of the instruction:
+
+ WRITE.n u32_address u32_value
+ - Write the "u32_value" to the "u32_address" address.
+
+ ORR.n u32_address u32_value
+ - Read the "u32_address", perform a bitwise-OR with the "u32_value" and
+ write the result back to "u32_address".
+
+ ANDC.n u32_address u32_value
+ - Read the "u32_address", perform a bitwise-AND with the complement of
+ "u32_value" and write the result back to "u32_address".
+
+ EQZ.n u32_address u32_count
+ - Read the "u32_address" at most "u32_count" times and test if the value
+ read is zero. If it is, break the loop earlier.
+
+ NEZ.n u32_address u32_count
+ - Read the "u32_address" at most "u32_count" times and test if the value
+ read is non-zero. If it is, break the loop earlier.
+
+ EQ.n u32_address u32_mask
+ - Read the "u32_address" in a loop and test if the result masked with
+ "u32_mask" equals the "u32_mask". If the values are equal, break the
+ reading loop.
+
+ NEQ.n u32_address u32_mask
+ - Read the "u32_address" in a loop and test if the result masked with
+ "u32_mask" does not equal the "u32_mask". If the values are not equal,
+ break the reading loop.
+
+ NOOP
+ - This instruction does nothing.
+
+- If the verbose output from the BootROM is enabled, the BootROM will produce a
+ letter on the Debug UART for each instruction it started processing. Here is a
+ mapping between the above instructions and the BootROM verbose output:
+
+ H -- SB Image header loaded
+ T -- TAG instruction
+ N -- NOOP instruction
+ L -- LOAD instruction
+ F -- FILL instruction
+ J -- JUMP instruction
+ C -- CALL instruction
+ M -- MODE instruction
+
+Usage -- verifying image:
+=========================
+
+The mxsimage can also verify and dump contents of an image. Use the following
+syntax to verify and dump contents of an image:
+
+ mkimage -l <input bootstream file>
+
+This will output all the information from the SB image header and all the
+instructions contained in the SB image. It will also check if the various
+checksums in the SB image are correct.
diff --git a/include/image.h b/include/image.h
index f93a393..ee6eb8d 100644
--- a/include/image.h
+++ b/include/image.h
@@ -212,6 +212,7 @@ struct lmb;
#define IH_TYPE_AISIMAGE 13 /* TI Davinci AIS Image */
#define IH_TYPE_KERNEL_NOLOAD 14 /* OS Kernel Image, can run from any load address */
#define IH_TYPE_PBLIMAGE 15 /* Freescale PBL Boot Image */
+#define IH_TYPE_MXSIMAGE 16 /* Freescale MXSBoot Image */
/*
* Compression Types
diff --git a/tools/Makefile b/tools/Makefile
index 33fad6b..bbae5a2 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -83,6 +83,7 @@ NOPED_OBJ_FILES-y += aisimage.o
NOPED_OBJ_FILES-y += kwbimage.o
NOPED_OBJ_FILES-y += pblimage.o
NOPED_OBJ_FILES-y += imximage.o
+NOPED_OBJ_FILES-y += mxsimage.o
NOPED_OBJ_FILES-y += image-host.o
NOPED_OBJ_FILES-y += omapimage.o
NOPED_OBJ_FILES-y += mkenvimage.o
@@ -209,6 +210,7 @@ $(obj)mkimage$(SFX): $(obj)aisimage.o \
$(obj)image-host.o \
$(FIT_SIG_OBJS) \
$(obj)imximage.o \
+ $(obj)mxsimage.o \
$(obj)kwbimage.o \
$(obj)pblimage.o \
$(obj)md5.o \
diff --git a/tools/mkimage.c b/tools/mkimage.c
index b700b9e..635df02 100644
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -144,6 +144,8 @@ main (int argc, char **argv)
init_kwb_image_type ();
/* Init Freescale imx Boot image generation/list support */
init_imx_image_type ();
+ /* Init Freescale mxs Boot image generation/list support */
+ init_mxs_image_type ();
/* Init FIT image generation/list support */
init_fit_image_type ();
/* Init TI OMAP Boot image generation/list support */
diff --git a/tools/mkimage.h b/tools/mkimage.h
index 950e190..1a87bc7 100644
--- a/tools/mkimage.h
+++ b/tools/mkimage.h
@@ -112,6 +112,7 @@ struct image_type_params {
int (*verify_header) (unsigned char *, int, struct mkimage_params *);
/* Prints image information abstracting from image header */
void (*print_header) (const void *);
+
/*
* The header or image contents need to be set as per image type to
* be generated using this callback function.
@@ -158,6 +159,7 @@ void init_pbl_image_type(void);
void init_ais_image_type(void);
void init_kwb_image_type (void);
void init_imx_image_type (void);
+void init_mxs_image_type (void);
void init_default_image_type (void);
void init_fit_image_type (void);
void init_ubl_image_type(void);
diff --git a/tools/mxsimage.c b/tools/mxsimage.c
new file mode 100644
index 0000000..33342cc
--- /dev/null
+++ b/tools/mxsimage.c
@@ -0,0 +1,2315 @@
+/*
+ * Freescale i.MX23/i.MX28 SB image generator
+ *
+ * Copyright (C) 2012-2013 Marek Vasut <marex at denx.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+
+#include <openssl/evp.h>
+
+#include "mkimage.h"
+#include "mxsimage.h"
+#include <image.h>
+
+
+/*
+ * DCD block
+ * |-Write to address command block
+ * | 0xf00 == 0xf33d
+ * | 0xba2 == 0xb33f
+ * |-ORR address with mask command block
+ * | 0xf00 |= 0x1337
+ * |-Write to address command block
+ * | 0xba2 == 0xd00d
+ * :
+ */
+#define SB_HAB_DCD_WRITE 0xccUL
+#define SB_HAB_DCD_CHECK 0xcfUL
+#define SB_HAB_DCD_NOOP 0xc0UL
+#define SB_HAB_DCD_MASK_BIT (1 << 3)
+#define SB_HAB_DCD_SET_BIT (1 << 4)
+
+/* Addr.n = Value.n */
+#define SB_DCD_WRITE \
+ (SB_HAB_DCD_WRITE << 24)
+/* Addr.n &= ~Value.n */
+#define SB_DCD_ANDC \
+ ((SB_HAB_DCD_WRITE << 24) | SB_HAB_DCD_SET_BIT)
+/* Addr.n |= Value.n */
+#define SB_DCD_ORR \
+ ((SB_HAB_DCD_WRITE << 24) | SB_HAB_DCD_SET_BIT | SB_HAB_DCD_MASK_BIT)
+/* (Addr.n & Value.n) == 0 */
+#define SB_DCD_CHK_EQZ \
+ (SB_HAB_DCD_CHECK << 24)
+/* (Addr.n & Value.n) == Value.n */
+#define SB_DCD_CHK_EQ \
+ ((SB_HAB_DCD_CHECK << 24) | SB_HAB_DCD_SET_BIT)
+/* (Addr.n & Value.n) != Value.n */
+#define SB_DCD_CHK_NEQ \
+ ((SB_HAB_DCD_CHECK << 24) | SB_HAB_DCD_MASK_BIT)
+/* (Addr.n & Value.n) != 0 */
+#define SB_DCD_CHK_NEZ \
+ ((SB_HAB_DCD_CHECK << 24) | SB_HAB_DCD_SET_BIT | SB_HAB_DCD_MASK_BIT)
+/* NOP */
+#define SB_DCD_NOOP \
+ (SB_HAB_DCD_NOOP << 24)
+
+struct sb_dcd_ctx {
+ struct sb_dcd_ctx *dcd;
+
+ uint32_t id;
+
+ /* The DCD block. */
+ uint32_t *payload;
+ /* Size of the whole DCD block. */
+ uint32_t size;
+
+ /* Pointer to previous DCD command block. */
+ uint32_t *prev_dcd_head;
+};
+
+/*
+ * IMAGE
+ * |-SECTION
+ * | |-CMD
+ * | |-CMD
+ * | `-CMD
+ * |-SECTION
+ * | |-CMD
+ * : :
+ */
+struct sb_cmd_list {
+ char *cmd;
+ size_t len;
+ unsigned int lineno;
+};
+
+struct sb_cmd_ctx {
+ uint32_t size;
+
+ struct sb_cmd_ctx *cmd;
+
+ uint8_t *data;
+ uint32_t length;
+
+ struct sb_command payload;
+ struct sb_command c_payload;
+};
+
+struct sb_section_ctx {
+ uint32_t size;
+
+ /* Section flags */
+ unsigned int boot:1;
+
+ struct sb_section_ctx *sect;
+
+ struct sb_cmd_ctx *cmd_head;
+ struct sb_cmd_ctx *cmd_tail;
+
+ struct sb_sections_header payload;
+};
+
+struct sb_image_ctx {
+ unsigned int in_section:1;
+ unsigned int in_dcd:1;
+ /* Image configuration */
+ unsigned int verbose_boot:1;
+ unsigned int silent_dump:1;
+ char *input_filename;
+ char *output_filename;
+ char *cfg_filename;
+ uint8_t image_key[16];
+
+ /* Number of section in the image */
+ unsigned int sect_count;
+ /* Bootable section */
+ unsigned int sect_boot;
+ unsigned int sect_boot_found:1;
+
+ struct sb_section_ctx *sect_head;
+ struct sb_section_ctx *sect_tail;
+
+ struct sb_dcd_ctx *dcd_head;
+ struct sb_dcd_ctx *dcd_tail;
+
+ EVP_CIPHER_CTX cipher_ctx;
+ EVP_MD_CTX md_ctx;
+ uint8_t digest[32];
+ struct sb_key_dictionary_key sb_dict_key;
+
+ struct sb_boot_image_header payload;
+};
+
+/*
+ * Instruction semantics:
+ * NOOP
+ * TAG [LAST]
+ * LOAD address file
+ * LOAD IVT address IVT_entry_point
+ * FILL address pattern length
+ * JUMP [HAB] address [r0_arg]
+ * CALL [HAB] address [r0_arg]
+ * MODE mode
+ * For i.MX23, mode = USB/I2C/SPI1_FLASH/SPI2_FLASH/NAND_BCH
+ * JTAG/SPI3_EEPROM/SD_SSP0/SD_SSP1
+ * For i.MX28, mode = USB/I2C/SPI2_FLASH/SPI3_FLASH/NAND_BCH
+ * JTAG/SPI2_EEPROM/SD_SSP0/SD_SSP1
+ */
+
+/*
+ * AES libcrypto
+ */
+static int sb_aes_init(struct sb_image_ctx *ictx, uint8_t *iv, int enc)
+{
+ EVP_CIPHER_CTX *ctx = &ictx->cipher_ctx;
+ int ret;
+
+ /* If there is no init vector, init vector is all zeroes. */
+ if (!iv)
+ iv = ictx->image_key;
+
+ EVP_CIPHER_CTX_init(ctx);
+ ret = EVP_CipherInit(ctx, EVP_aes_128_cbc(), ictx->image_key, iv, enc);
+ if (ret == 1)
+ EVP_CIPHER_CTX_set_padding(ctx, 0);
+ return ret;
+}
+
+static int sb_aes_crypt(struct sb_image_ctx *ictx, uint8_t *in_data,
+ uint8_t *out_data, int in_len)
+{
+ EVP_CIPHER_CTX *ctx = &ictx->cipher_ctx;
+ int ret, outlen;
+ uint8_t *outbuf;
+
+ outbuf = malloc(in_len);
+ if (!outbuf)
+ return -ENOMEM;
+ memset(outbuf, 0, sizeof(in_len));
+
+ ret = EVP_CipherUpdate(ctx, outbuf, &outlen, in_data, in_len);
+ if (!ret) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (out_data)
+ memcpy(out_data, outbuf, outlen);
+
+err:
+ free(outbuf);
+ return ret;
+}
+
+static int sb_aes_deinit(EVP_CIPHER_CTX *ctx)
+{
+ return EVP_CIPHER_CTX_cleanup(ctx);
+}
+
+static int sb_aes_reinit(struct sb_image_ctx *ictx, int enc)
+{
+ int ret;
+ EVP_CIPHER_CTX *ctx = &ictx->cipher_ctx;
+ struct sb_boot_image_header *sb_header = &ictx->payload;
+ uint8_t *iv = sb_header->iv;
+
+ ret = sb_aes_deinit(ctx);
+ if (!ret)
+ return ret;
+ return sb_aes_init(ictx, iv, enc);
+}
+
+/*
+ * CRC32
+ */
+static uint32_t crc32(uint8_t *data, uint32_t len)
+{
+ const uint32_t poly = 0x04c11db7;
+ uint32_t crc32 = 0xffffffff;
+ unsigned int byte, bit;
+
+ for (byte = 0; byte < len; byte++) {
+ crc32 ^= data[byte] << 24;
+
+ for (bit = 8; bit > 0; bit--) {
+ if (crc32 & (1UL << 31))
+ crc32 = (crc32 << 1) ^ poly;
+ else
+ crc32 = (crc32 << 1);
+ }
+ }
+
+ return crc32;
+}
+
+/*
+ * Debug
+ */
+static void soprintf(struct sb_image_ctx *ictx, const char *fmt, ...)
+{
+ va_list ap;
+
+ if (ictx->silent_dump)
+ return;
+
+ va_start(ap, fmt);
+ vfprintf(stdout, fmt, ap);
+ va_end(ap);
+}
+
+/*
+ * Code
+ */
+static time_t sb_get_timestamp(void)
+{
+#if 0
+ struct tm time_2000 = {
+ .tm_yday = 1, /* Jan. 1st */
+ .tm_year = 100, /* 2000 */
+ };
+ time_t seconds_to_2000 = mktime(&time_2000);
+ time_t seconds_to_now = time(NULL);
+
+ return seconds_to_now - seconds_to_2000;
+#endif
+ return 427398871;
+}
+
+static int sb_get_time(time_t time, struct tm *tm)
+{
+ struct tm time_2000 = {
+ .tm_yday = 1, /* Jan. 1st */
+ .tm_year = 0, /* 1900 */
+ };
+ const time_t seconds_to_2000 = mktime(&time_2000);
+ const time_t seconds_to_now = seconds_to_2000 + time;
+ struct tm *ret;
+ ret = gmtime_r(&seconds_to_now, tm);
+ return ret ? 0 : -EINVAL;
+}
+
+static void sb_encrypt_sb_header(struct sb_image_ctx *ictx)
+{
+ EVP_MD_CTX *md_ctx = &ictx->md_ctx;
+ struct sb_boot_image_header *sb_header = &ictx->payload;
+ uint8_t *sb_header_ptr = (uint8_t *)sb_header;
+
+ /* Encrypt the header, compute the digest. */
+ sb_aes_crypt(ictx, sb_header_ptr, NULL, sizeof(*sb_header));
+ EVP_DigestUpdate(md_ctx, sb_header_ptr, sizeof(*sb_header));
+}
+
+static void sb_encrypt_sb_sections_header(struct sb_image_ctx *ictx)
+{
+ EVP_MD_CTX *md_ctx = &ictx->md_ctx;
+ struct sb_section_ctx *sctx = ictx->sect_head;
+ struct sb_sections_header *shdr;
+ uint8_t *sb_sections_header_ptr;
+ const int size = sizeof(*shdr);
+
+ while (sctx) {
+ shdr = &sctx->payload;
+ sb_sections_header_ptr = (uint8_t *)shdr;
+
+ sb_aes_crypt(ictx, sb_sections_header_ptr,
+ ictx->sb_dict_key.cbc_mac, size);
+ EVP_DigestUpdate(md_ctx, sb_sections_header_ptr, size);
+
+ sctx = sctx->sect;
+ };
+}
+
+static void sb_encrypt_key_dictionary_key(struct sb_image_ctx *ictx)
+{
+ EVP_MD_CTX *md_ctx = &ictx->md_ctx;
+
+ sb_aes_crypt(ictx, ictx->image_key, ictx->sb_dict_key.key,
+ sizeof(ictx->sb_dict_key.key));
+ EVP_DigestUpdate(md_ctx, &ictx->sb_dict_key, sizeof(ictx->sb_dict_key));
+}
+
+static void sb_decrypt_key_dictionary_key(struct sb_image_ctx *ictx)
+{
+ EVP_MD_CTX *md_ctx = &ictx->md_ctx;
+
+ EVP_DigestUpdate(md_ctx, &ictx->sb_dict_key, sizeof(ictx->sb_dict_key));
+ sb_aes_crypt(ictx, ictx->sb_dict_key.key, ictx->image_key,
+ sizeof(ictx->sb_dict_key.key));
+}
+
+static void sb_encrypt_tag(struct sb_image_ctx *ictx,
+ struct sb_cmd_ctx *cctx)
+{
+ EVP_MD_CTX *md_ctx = &ictx->md_ctx;
+ struct sb_command *cmd = &cctx->payload;
+
+ sb_aes_crypt(ictx, (uint8_t *)cmd,
+ (uint8_t *)&cctx->c_payload, sizeof(*cmd));
+ EVP_DigestUpdate(md_ctx, &cctx->c_payload, sizeof(*cmd));
+}
+
+static int sb_encrypt_image(struct sb_image_ctx *ictx)
+{
+ /* Start image-wide crypto. */
+ EVP_MD_CTX_init(&ictx->md_ctx);
+ EVP_DigestInit(&ictx->md_ctx, EVP_sha1());
+
+ /*
+ * SB image header.
+ */
+ sb_aes_init(ictx, NULL, 1);
+ sb_encrypt_sb_header(ictx);
+
+ /*
+ * SB sections header.
+ */
+ sb_encrypt_sb_sections_header(ictx);
+
+ /*
+ * Key dictionary.
+ */
+ sb_aes_reinit(ictx, 1);
+ sb_encrypt_key_dictionary_key(ictx);
+
+ /*
+ * Section tags.
+ */
+ struct sb_cmd_ctx *cctx;
+ struct sb_command *ccmd;
+ struct sb_section_ctx *sctx = ictx->sect_head;
+
+ while (sctx) {
+ cctx = sctx->cmd_head;
+
+ sb_aes_reinit(ictx, 1);
+
+ while (cctx) {
+ ccmd = &cctx->payload;
+
+ sb_encrypt_tag(ictx, cctx);
+
+ if (ccmd->header.tag == ROM_TAG_CMD) {
+ sb_aes_reinit(ictx, 1);
+ } else if (ccmd->header.tag == ROM_LOAD_CMD) {
+ sb_aes_crypt(ictx, cctx->data, cctx->data, cctx->length);
+ EVP_DigestUpdate(&ictx->md_ctx, cctx->data, cctx->length);
+ }
+
+ cctx = cctx->cmd;
+ }
+
+ sctx = sctx->sect;
+ };
+
+ /*
+ * Dump the SHA1 of the whole image.
+ */
+ sb_aes_reinit(ictx, 1);
+
+ EVP_DigestFinal(&ictx->md_ctx, ictx->digest, NULL);
+ sb_aes_crypt(ictx, ictx->digest, ictx->digest, sizeof(ictx->digest));
+
+ /* Stop the encryption session. */
+ sb_aes_deinit(&ictx->cipher_ctx);
+
+ return 0;
+}
+
+static int sb_load_file(struct sb_cmd_ctx *cctx, char *filename)
+{
+ long real_size, roundup_size;
+ uint8_t *data;
+ long ret;
+ unsigned long size;
+ FILE *fp;
+
+ if (!filename) {
+ fprintf(stderr, "ERR: Missing filename!\n");
+ return -EINVAL;
+ }
+
+ fp = fopen(filename, "r");
+ if (!fp)
+ goto err_open;
+
+ ret = fseek(fp, 0, SEEK_END);
+ if (ret < 0)
+ goto err_file;
+
+ real_size = ftell(fp);
+ if (real_size < 0)
+ goto err_file;
+
+ ret = fseek(fp, 0, SEEK_SET);
+ if (ret < 0)
+ goto err_file;
+
+ roundup_size = roundup(real_size, SB_BLOCK_SIZE);
+ data = calloc(1, roundup_size);
+ if (!data)
+ goto err_file;
+
+ size = fread(data, 1, real_size, fp);
+ if (size != (unsigned long)real_size)
+ goto err_alloc;
+
+ cctx->data = data;
+ cctx->length = roundup_size;
+
+ fclose(fp);
+ return 0;
+
+err_alloc:
+ free(data);
+err_file:
+ fclose(fp);
+err_open:
+ fprintf(stderr, "ERR: Failed to load file \"%s\"\n", filename);
+ return -EINVAL;
+}
+
+static uint8_t sb_command_checksum(struct sb_command *inst)
+{
+ uint8_t *inst_ptr = (uint8_t *)inst;
+ uint8_t csum = 0;
+ unsigned int i;
+
+ for(i = 0; i < sizeof(struct sb_command); i++)
+ csum += inst_ptr[i];
+
+ return csum;
+}
+
+static int sb_token_to_long(char *tok, uint32_t *rid)
+{
+ char *endptr;
+ unsigned long id;
+
+ if (tok[0] != '0' || tok[1] != 'x') {
+ fprintf(stderr, "ERR: Invalid hexadecimal number!\n");
+ return -EINVAL;
+ }
+
+ tok += 2;
+
+ id = strtoul(tok, &endptr, 16);
+ if ((errno == ERANGE && id == ULONG_MAX) || (errno != 0 && id == 0)) {
+ fprintf(stderr, "ERR: Value can't be decoded!\n");
+ return -EINVAL;
+ }
+
+ /* Check for 32-bit overflow. */
+ if (id > 0xffffffff) {
+ fprintf(stderr, "ERR: Value too big!\n");
+ return -EINVAL;
+ }
+
+ if (endptr == tok) {
+ fprintf(stderr, "ERR: Deformed value!\n");
+ return -EINVAL;
+ }
+
+ *rid = (uint32_t)id;
+ return 0;
+}
+
+static int sb_grow_dcd(struct sb_dcd_ctx *dctx, unsigned int inc_size)
+{
+ uint32_t *tmp;
+
+ if (!inc_size)
+ return 0;
+
+ dctx->size += inc_size;
+ tmp = realloc(dctx->payload, dctx->size);
+ if (!tmp)
+ return -ENOMEM;
+
+ dctx->payload = tmp;
+
+ /* Assemble and update the HAB DCD header. */
+ dctx->payload[0] = htonl((SB_HAB_DCD_TAG << 24) |
+ (dctx->size << 8) |
+ SB_HAB_VERSION);
+
+ return 0;
+}
+
+static int sb_build_dcd(struct sb_image_ctx *ictx, struct sb_cmd_list *cmd)
+{
+ struct sb_dcd_ctx *dctx;
+
+ char *tok;
+ uint32_t id;
+ int ret;
+
+ dctx = calloc(1, sizeof(*dctx));
+ if (!dctx)
+ return -ENOMEM;
+
+ ret = sb_grow_dcd(dctx, 4);
+ if (ret)
+ goto err_dcd;
+
+ /* Read DCD block number. */
+ tok = strtok(cmd->cmd, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: DCD block without number!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err_dcd;
+ }
+
+ /* Parse the DCD block number. */
+ ret = sb_token_to_long(tok, &id);
+ if (ret) {
+ fprintf(stderr, "#%i ERR: Malformed DCD block number!\n",
+ cmd->lineno);
+ goto err_dcd;
+ }
+
+ dctx->id = id;
+
+ /*
+ * The DCD block is now constructed. Append it to the list.
+ * WARNING: The DCD size is still not computed and will be
+ * updated while parsing it's commands.
+ */
+ if (!ictx->dcd_head) {
+ ictx->dcd_head = dctx;
+ ictx->dcd_tail = dctx;
+ } else {
+ ictx->dcd_tail->dcd = dctx;
+ ictx->dcd_tail = dctx;
+ }
+
+ return 0;
+
+err_dcd:
+ free(dctx->payload);
+ free(dctx);
+ return ret;
+}
+
+static int sb_build_dcd_block(struct sb_image_ctx *ictx,
+ struct sb_cmd_list *cmd,
+ uint32_t type)
+{
+ char *tok;
+ uint32_t address, value, length;
+ int ret;
+
+ struct sb_dcd_ctx *dctx = ictx->dcd_tail;
+ uint32_t *dcd;
+
+ if (dctx->prev_dcd_head && (type != SB_DCD_NOOP) &&
+ ((dctx->prev_dcd_head[0] & 0xff0000ff) == type)) {
+ /* Same instruction as before, just append it. */
+ ret = sb_grow_dcd(dctx, 8);
+ if (ret)
+ return ret;
+ } else if (type == SB_DCD_NOOP) {
+ ret = sb_grow_dcd(dctx, 4);
+ if (ret)
+ return ret;
+
+ /* Update DCD command block pointer. */
+ dctx->prev_dcd_head = dctx->payload +
+ dctx->size / sizeof(*dctx->payload) - 1;
+
+ /* NOOP has only 4 bytes and no payload. */
+ goto noop;
+ } else {
+ /*
+ * Either a different instruction block started now
+ * or this is the first instruction block.
+ */
+ ret = sb_grow_dcd(dctx, 12);
+ if (ret)
+ return ret;
+
+ /* Update DCD command block pointer. */
+ dctx->prev_dcd_head = dctx->payload +
+ dctx->size / sizeof(*dctx->payload) - 3;
+ }
+
+ dcd = dctx->payload + dctx->size / sizeof(*dctx->payload) - 2;
+
+ /*
+ * Prepare the command.
+ */
+ tok = strtok(cmd->cmd, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: Missing DCD address!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Read DCD destination address. */
+ ret = sb_token_to_long(tok, &address);
+ if (ret) {
+ fprintf(stderr, "#%i ERR: Incorrect DCD address!\n",
+ cmd->lineno);
+ goto err;
+ }
+
+ tok = strtok(NULL, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: Missing DCD value!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Read DCD operation value. */
+ ret = sb_token_to_long(tok, &value);
+ if (ret) {
+ fprintf(stderr, "#%i ERR: Incorrect DCD value!\n",
+ cmd->lineno);
+ goto err;
+ }
+
+ /* Fill in the new DCD entry. */
+ dcd[0] = htonl(address);
+ dcd[1] = htonl(value);
+
+noop:
+ /* Update the DCD command block. */
+ length = dctx->size -
+ ((dctx->prev_dcd_head - dctx->payload) * sizeof(*dctx->payload));
+ dctx->prev_dcd_head[0] = htonl(type | (length << 8));
+
+err:
+ return ret;
+}
+
+static int sb_build_section(struct sb_image_ctx *ictx, struct sb_cmd_list *cmd)
+{
+ struct sb_section_ctx *sctx;
+ struct sb_sections_header *shdr;
+ char *tok;
+ uint32_t bootable = 0;
+ uint32_t id;
+ int ret;
+
+ sctx = calloc(1, sizeof(*sctx));
+ if (!sctx)
+ return -ENOMEM;
+
+ /* Read section number. */
+ tok = strtok(cmd->cmd, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: Section without number!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err_sect;
+ }
+
+ /* Parse the section number. */
+ ret = sb_token_to_long(tok, &id);
+ if (ret) {
+ fprintf(stderr, "#%i ERR: Malformed section number!\n",
+ cmd->lineno);
+ goto err_sect;
+ }
+
+ /* Read section's BOOTABLE flag. */
+ tok = strtok(NULL, " ");
+ if (tok && (strlen(tok) == 8) && !strncmp(tok, "BOOTABLE", 8))
+ bootable = SB_SECTION_FLAG_BOOTABLE;
+
+ sctx->boot = bootable;
+
+ shdr = &sctx->payload;
+ shdr->section_number = id;
+ shdr->section_flags = bootable;
+
+ /*
+ * The section is now constructed. Append it to the list.
+ * WARNING: The section size is still not computed and will
+ * be updated while parsing it's commands.
+ */
+ ictx->sect_count++;
+
+ /* Mark that this section is bootable one. */
+ if (bootable) {
+ if (ictx->sect_boot_found) {
+ fprintf(stderr, "#%i WARN: Multiple bootable section!\n",
+ cmd->lineno);
+ } else {
+ ictx->sect_boot = id;
+ ictx->sect_boot_found = 1;
+ }
+ }
+
+ if (!ictx->sect_head) {
+ ictx->sect_head = sctx;
+ ictx->sect_tail = sctx;
+ } else {
+ ictx->sect_tail->sect = sctx;
+ ictx->sect_tail = sctx;
+ }
+
+ return 0;
+
+err_sect:
+ free(sctx);
+ return ret;
+}
+
+static int sb_build_command_nop(struct sb_image_ctx *ictx)
+{
+ struct sb_section_ctx *sctx = ictx->sect_tail;
+ struct sb_cmd_ctx *cctx;
+ struct sb_command *ccmd;
+
+ cctx = calloc(1, sizeof(*cctx));
+ if (!cctx)
+ return -ENOMEM;
+
+ ccmd = &cctx->payload;
+
+ /*
+ * Construct the command.
+ */
+ ccmd->header.checksum = 0x5a;
+ ccmd->header.tag = ROM_NOP_CMD;
+
+ cctx->size = sizeof(*ccmd);
+
+ /*
+ * Append the command to the last section.
+ */
+ if (!sctx->cmd_head) {
+ sctx->cmd_head = cctx;
+ sctx->cmd_tail = cctx;
+ } else {
+ sctx->cmd_tail->cmd = cctx;
+ sctx->cmd_tail = cctx;
+ }
+
+ return 0;
+}
+
+static int sb_build_command_tag(struct sb_image_ctx *ictx, struct sb_cmd_list *cmd)
+{
+ struct sb_section_ctx *sctx = ictx->sect_tail;
+ struct sb_cmd_ctx *cctx;
+ struct sb_command *ccmd;
+ char *tok;
+
+ cctx = calloc(1, sizeof(*cctx));
+ if (!cctx)
+ return -ENOMEM;
+
+ ccmd = &cctx->payload;
+
+ /*
+ * Prepare the command.
+ */
+ /* Check for the LAST keyword. */
+ tok = strtok(cmd->cmd, " ");
+ if (tok && !strcmp(tok, "LAST"))
+ ccmd->header.flags = ROM_TAG_CMD_FLAG_ROM_LAST_TAG;
+
+ /*
+ * Construct the command.
+ */
+ ccmd->header.checksum = 0x5a;
+ ccmd->header.tag = ROM_TAG_CMD;
+
+ cctx->size = sizeof(*ccmd);
+
+ /*
+ * Append the command to the last section.
+ */
+ if (!sctx->cmd_head) {
+ sctx->cmd_head = cctx;
+ sctx->cmd_tail = cctx;
+ } else {
+ sctx->cmd_tail->cmd = cctx;
+ sctx->cmd_tail = cctx;
+ }
+
+ return 0;
+}
+
+static int sb_build_command_load(struct sb_image_ctx *ictx, struct sb_cmd_list *cmd)
+{
+ struct sb_section_ctx *sctx = ictx->sect_tail;
+ struct sb_cmd_ctx *cctx;
+ struct sb_command *ccmd;
+ char *tok;
+ int ret, is_ivt = 0, is_dcd = 0;
+ uint32_t dest, dcd = 0;
+
+ cctx = calloc(1, sizeof(*cctx));
+ if (!cctx)
+ return -ENOMEM;
+
+ ccmd = &cctx->payload;
+
+ /*
+ * Prepare the command.
+ */
+ tok = strtok(cmd->cmd, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: Missing LOAD address or 'IVT'!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Check for "IVT" flag. */
+ if (!strcmp(tok, "IVT"))
+ is_ivt = 1;
+ if (!strcmp(tok, "DCD"))
+ is_dcd = 1;
+ if (is_ivt || is_dcd) {
+ tok = strtok(NULL, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: Missing LOAD address!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+
+ /* Read load destination address. */
+ ret = sb_token_to_long(tok, &dest);
+ if (ret) {
+ fprintf(stderr, "#%i ERR: Incorrect LOAD address!\n",
+ cmd->lineno);
+ goto err;
+ }
+
+ /* Read filename or IVT entrypoint or DCD block ID. */
+ tok = strtok(NULL, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: Missing LOAD filename or "
+ "IVT ep or DCD block ID!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (is_ivt) {
+ /* Handle IVT. */
+ struct sb_ivt_header *ivt;
+ uint32_t ivtep;
+ ret = sb_token_to_long(tok, &ivtep);
+
+ if (ret) {
+ fprintf(stderr,
+ "#%i ERR: Incorrect IVT entry point!\n",
+ cmd->lineno);
+ goto err;
+ }
+
+ ivt = calloc(1, sizeof(*ivt));
+ if (!ivt) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ ivt->header = sb_hab_ivt_header();
+ ivt->entry = ivtep;
+ ivt->self = dest;
+
+ cctx->data = (uint8_t *)ivt;
+ cctx->length = sizeof(*ivt);
+ } else if (is_dcd) {
+ struct sb_dcd_ctx *dctx = ictx->dcd_head;
+ uint32_t dcdid;
+ uint8_t *payload;
+ uint32_t asize;
+ ret = sb_token_to_long(tok, &dcdid);
+
+ if (ret) {
+ fprintf(stderr,
+ "#%i ERR: Incorrect DCD block ID!\n",
+ cmd->lineno);
+ goto err;
+ }
+
+ while (dctx) {
+ if (dctx->id == dcdid)
+ break;
+ dctx = dctx->dcd;
+ }
+
+ if (!dctx) {
+ fprintf(stderr, "#%i ERR: DCD block %08x not found!\n",
+ cmd->lineno, dcdid);
+ goto err;
+ }
+
+ asize = roundup(dctx->size, SB_BLOCK_SIZE);
+ payload = calloc(1, asize);
+ if (!payload) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ memcpy(payload, dctx->payload, dctx->size);
+
+ cctx->data = payload;
+ cctx->length = asize;
+
+ /* Set the Load DCD flag. */
+ dcd = ROM_LOAD_CMD_FLAG_DCD_LOAD;
+ } else {
+ /* Regular LOAD of a file. */
+ ret = sb_load_file(cctx, tok);
+ if (ret) {
+ fprintf(stderr, "#%i ERR: Cannot load '%s'!\n",
+ cmd->lineno, tok);
+ goto err;
+ }
+ }
+
+ if (cctx->length & (SB_BLOCK_SIZE - 1)) {
+ fprintf(stderr, "#%i ERR: Unaligned payload!\n",
+ cmd->lineno);
+ }
+
+ /*
+ * Construct the command.
+ */
+ ccmd->header.checksum = 0x5a;
+ ccmd->header.tag = ROM_LOAD_CMD;
+ ccmd->header.flags = dcd;
+
+ ccmd->load.address = dest;
+ ccmd->load.count = cctx->length;
+ ccmd->load.crc32 = crc32(cctx->data, cctx->length);
+
+ cctx->size = sizeof(*ccmd) + cctx->length;
+
+ /*
+ * Append the command to the last section.
+ */
+ if (!sctx->cmd_head) {
+ sctx->cmd_head = cctx;
+ sctx->cmd_tail = cctx;
+ } else {
+ sctx->cmd_tail->cmd = cctx;
+ sctx->cmd_tail = cctx;
+ }
+
+ return 0;
+
+err:
+ free(cctx);
+ return ret;
+}
+
+static int sb_build_command_fill(struct sb_image_ctx *ictx, struct sb_cmd_list *cmd)
+{
+ struct sb_section_ctx *sctx = ictx->sect_tail;
+ struct sb_cmd_ctx *cctx;
+ struct sb_command *ccmd;
+ char *tok;
+ uint32_t address, pattern, length;
+ int ret;
+
+ cctx = calloc(1, sizeof(*cctx));
+ if (!cctx)
+ return -ENOMEM;
+
+ ccmd = &cctx->payload;
+
+ /*
+ * Prepare the command.
+ */
+ tok = strtok(cmd->cmd, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: Missing FILL address!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Read fill destination address. */
+ ret = sb_token_to_long(tok, &address);
+ if (ret) {
+ fprintf(stderr, "#%i ERR: Incorrect FILL address!\n",
+ cmd->lineno);
+ goto err;
+ }
+
+ tok = strtok(NULL, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: Missing FILL pattern!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Read fill pattern address. */
+ ret = sb_token_to_long(tok, &pattern);
+ if (ret) {
+ fprintf(stderr, "#%i ERR: Incorrect FILL pattern!\n",
+ cmd->lineno);
+ goto err;
+ }
+
+ tok = strtok(NULL, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: Missing FILL length!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Read fill pattern address. */
+ ret = sb_token_to_long(tok, &length);
+ if (ret) {
+ fprintf(stderr, "#%i ERR: Incorrect FILL length!\n",
+ cmd->lineno);
+ goto err;
+ }
+
+ /*
+ * Construct the command.
+ */
+ ccmd->header.checksum = 0x5a;
+ ccmd->header.tag = ROM_FILL_CMD;
+
+ ccmd->fill.address = address;
+ ccmd->fill.count = length;
+ ccmd->fill.pattern = pattern;
+
+ cctx->size = sizeof(*ccmd);
+
+ /*
+ * Append the command to the last section.
+ */
+ if (!sctx->cmd_head) {
+ sctx->cmd_head = cctx;
+ sctx->cmd_tail = cctx;
+ } else {
+ sctx->cmd_tail->cmd = cctx;
+ sctx->cmd_tail = cctx;
+ }
+
+ return 0;
+
+err:
+ free(cctx);
+ return ret;
+}
+
+static int sb_build_command_jump_call(struct sb_image_ctx *ictx,
+ struct sb_cmd_list *cmd,
+ unsigned int is_call)
+{
+ struct sb_section_ctx *sctx = ictx->sect_tail;
+ struct sb_cmd_ctx *cctx;
+ struct sb_command *ccmd;
+ char *tok;
+ uint32_t dest, arg = 0x0;
+ uint32_t hab = 0;
+ int ret;
+ const char *cmdname = is_call ? "CALL" : "JUMP";
+
+ cctx = calloc(1, sizeof(*cctx));
+ if (!cctx)
+ return -ENOMEM;
+
+ ccmd = &cctx->payload;
+
+ /*
+ * Prepare the command.
+ */
+ tok = strtok(cmd->cmd, " ");
+ if (!tok) {
+ fprintf(stderr,
+ "#%i ERR: Missing %s address or 'HAB'!\n",
+ cmd->lineno, cmdname);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Check for "HAB" flag. */
+ if (!strcmp(tok, "HAB")) {
+ hab = is_call ? ROM_CALL_CMD_FLAG_HAB : ROM_JUMP_CMD_FLAG_HAB;
+ tok = strtok(NULL, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: Missing %s address!\n",
+ cmd->lineno, cmdname);
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+ /* Read load destination address. */
+ ret = sb_token_to_long(tok, &dest);
+ if (ret) {
+ fprintf(stderr, "#%i ERR: Incorrect %s address!\n",
+ cmd->lineno, cmdname);
+ goto err;
+ }
+
+ tok = strtok(NULL, " ");
+ if (tok) {
+ ret = sb_token_to_long(tok, &arg);
+ if (ret) {
+ fprintf(stderr,
+ "#%i ERR: Incorrect %s argument!\n",
+ cmd->lineno, cmdname);
+ goto err;
+ }
+ }
+
+ /*
+ * Construct the command.
+ */
+ ccmd->header.checksum = 0x5a;
+ ccmd->header.tag = is_call ? ROM_CALL_CMD : ROM_JUMP_CMD;
+ ccmd->header.flags = hab;
+
+ ccmd->call.address = dest;
+ ccmd->call.argument = arg;
+
+ cctx->size = sizeof(*ccmd);
+
+ /*
+ * Append the command to the last section.
+ */
+ if (!sctx->cmd_head) {
+ sctx->cmd_head = cctx;
+ sctx->cmd_tail = cctx;
+ } else {
+ sctx->cmd_tail->cmd = cctx;
+ sctx->cmd_tail = cctx;
+ }
+
+ return 0;
+
+err:
+ free(cctx);
+ return ret;
+}
+
+static int sb_build_command_jump(struct sb_image_ctx *ictx, struct sb_cmd_list *cmd)
+{
+ return sb_build_command_jump_call(ictx, cmd, 0);
+}
+
+static int sb_build_command_call(struct sb_image_ctx *ictx, struct sb_cmd_list *cmd)
+{
+ return sb_build_command_jump_call(ictx, cmd, 1);
+}
+
+static int sb_build_command_mode(struct sb_image_ctx *ictx, struct sb_cmd_list *cmd)
+{
+ struct sb_section_ctx *sctx = ictx->sect_tail;
+ struct sb_cmd_ctx *cctx;
+ struct sb_command *ccmd;
+ char *tok;
+ int ret;
+ unsigned int i;
+ uint32_t mode = 0xffffffff;
+
+ cctx = calloc(1, sizeof(*cctx));
+ if (!cctx)
+ return -ENOMEM;
+
+ ccmd = &cctx->payload;
+
+ /*
+ * Prepare the command.
+ */
+ tok = strtok(cmd->cmd, " ");
+ if (!tok) {
+ fprintf(stderr, "#%i ERR: Missing MODE boot mode argument!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(modetable); i++) {
+ if (!strcmp(tok, modetable[i].name)) {
+ mode = modetable[i].mode;
+ break;
+ }
+
+ if (!modetable[i].altname)
+ continue;
+
+ if (!strcmp(tok, modetable[i].altname)) {
+ mode = modetable[i].mode;
+ break;
+ }
+ }
+
+ if (mode == 0xffffffff) {
+ fprintf(stderr, "#%i ERR: Invalid MODE boot mode argument!\n",
+ cmd->lineno);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /*
+ * Construct the command.
+ */
+ ccmd->header.checksum = 0x5a;
+ ccmd->header.tag = ROM_MODE_CMD;
+
+ ccmd->mode.mode = mode;
+
+ cctx->size = sizeof(*ccmd);
+
+ /*
+ * Append the command to the last section.
+ */
+ if (!sctx->cmd_head) {
+ sctx->cmd_head = cctx;
+ sctx->cmd_tail = cctx;
+ } else {
+ sctx->cmd_tail->cmd = cctx;
+ sctx->cmd_tail = cctx;
+ }
+
+ return 0;
+
+err:
+ free(cctx);
+ return ret;
+}
+
+static int sb_prefill_image_header(struct sb_image_ctx *ictx)
+{
+ struct sb_boot_image_header *hdr = &ictx->payload;
+
+ /* Fill signatures */
+ memcpy(hdr->signature1, "STMP", 4);
+ memcpy(hdr->signature2, "sgtl", 4);
+
+ /* SB Image version 1.1 */
+ hdr->major_version = SB_VERSION_MAJOR;
+ hdr->minor_version = SB_VERSION_MINOR;
+
+ /* Boot image major version */
+ hdr->product_version.major = htons(0x999);
+ hdr->product_version.minor = htons(0x999);
+ hdr->product_version.revision = htons(0x999);
+ /* Boot image major version */
+ hdr->component_version.major = htons(0x999);
+ hdr->component_version.minor = htons(0x999);
+ hdr->component_version.revision = htons(0x999);
+
+ /* Drive tag must be 0x0 for i.MX23 */
+ hdr->drive_tag = 0;
+
+ hdr->header_blocks = sizeof(struct sb_boot_image_header) / SB_BLOCK_SIZE;
+ hdr->section_header_size = sizeof(struct sb_sections_header) / SB_BLOCK_SIZE;
+ hdr->timestamp_us = sb_get_timestamp() * 1000000;
+
+ /* FIXME -- add proper config option */
+ hdr->flags = ictx->verbose_boot ? SB_IMAGE_FLAG_VERBOSE : 0,
+
+ /* FIXME -- We support only default key */
+ hdr->key_count = 1;
+
+ return 0;
+}
+
+static int sb_postfill_image_header(struct sb_image_ctx *ictx)
+{
+ struct sb_boot_image_header *hdr = &ictx->payload;
+ struct sb_section_ctx *sctx = ictx->sect_head;
+ uint32_t kd_size, sections_blocks;
+ EVP_MD_CTX md_ctx;
+
+ /* The main SB header size in blocks. */
+ hdr->image_blocks = hdr->header_blocks;
+
+ /* Size of the key dictionary, which has single zero entry. */
+ kd_size = hdr->key_count * sizeof(struct sb_key_dictionary_key);
+ hdr->image_blocks += kd_size / SB_BLOCK_SIZE;
+
+ /* Now count the payloads. */
+ hdr->section_count = ictx->sect_count;
+ while (sctx) {
+ hdr->image_blocks += sctx->size / SB_BLOCK_SIZE;
+ sctx = sctx->sect;
+ }
+
+ if (!ictx->sect_boot_found) {
+ fprintf(stderr, "ERR: No bootable section selected!\n");
+ return -EINVAL;
+ }
+ hdr->first_boot_section_id = ictx->sect_boot;
+
+ /* The n * SB section size in blocks. */
+ sections_blocks = hdr->section_count * hdr->section_header_size;
+ hdr->image_blocks += sections_blocks;
+
+ /* Key dictionary offset. */
+ hdr->key_dictionary_block = hdr->header_blocks + sections_blocks;
+
+ /* Digest of the whole image. */
+ hdr->image_blocks += 2;
+
+ /* Pointer past the dictionary. */
+ hdr->first_boot_tag_block =
+ hdr->key_dictionary_block + kd_size / SB_BLOCK_SIZE;
+
+ /* Compute header digest. */
+ EVP_MD_CTX_init(&md_ctx);
+
+ EVP_DigestInit(&md_ctx, EVP_sha1());
+ EVP_DigestUpdate(&md_ctx, hdr->signature1,
+ sizeof(struct sb_boot_image_header) -
+ sizeof(hdr->digest));
+ EVP_DigestFinal(&md_ctx, hdr->digest, NULL);
+
+ return 0;
+}
+
+static int sb_fixup_sections_and_tags(struct sb_image_ctx *ictx)
+{
+ /* Fixup the placement of sections. */
+ struct sb_boot_image_header *ihdr = &ictx->payload;
+ struct sb_section_ctx *sctx = ictx->sect_head;
+ struct sb_sections_header *shdr;
+ struct sb_cmd_ctx *cctx;
+ struct sb_command *ccmd;
+ uint32_t offset = ihdr->first_boot_tag_block;
+
+ while (sctx) {
+ shdr = &sctx->payload;
+
+ /* Fill in the section TAG offset. */
+ shdr->section_offset = offset + 1;
+ offset += shdr->section_size;
+
+ /* Section length is measured from the TAG block. */
+ shdr->section_size--;
+
+ /* Fixup the TAG command. */
+ cctx = sctx->cmd_head;
+ while (cctx) {
+ ccmd = &cctx->payload;
+ if (ccmd->header.tag == ROM_TAG_CMD) {
+ ccmd->tag.section_number = shdr->section_number;
+ ccmd->tag.section_length = shdr->section_size;
+ ccmd->tag.section_flags = shdr->section_flags;
+ }
+
+ /* Update the command checksum. */
+ ccmd->header.checksum = sb_command_checksum(ccmd);
+
+ cctx = cctx->cmd;
+ }
+
+ sctx = sctx->sect;
+ }
+
+ return 0;
+}
+
+static int sb_parse_line(struct sb_image_ctx *ictx, struct sb_cmd_list *cmd)
+{
+ char *tok;
+ char *line = cmd->cmd;
+ char *rptr;
+ int ret;
+
+ /* Analyze the identifier on this line first. */
+ tok = strtok_r(line, " ", &rptr);
+ if (!tok || (strlen(tok) == 0)) {
+ fprintf(stderr, "#%i ERR: Invalid line!\n", cmd->lineno);
+ return -EINVAL;
+ }
+
+ cmd->cmd = rptr;
+
+ /* DCD */
+ if (!strcmp(tok, "DCD")) {
+ ictx->in_section = 0;
+ ictx->in_dcd = 1;
+ sb_build_dcd(ictx, cmd);
+ return 0;
+ }
+
+ /* Section */
+ if (!strcmp(tok, "SECTION")) {
+ ictx->in_section = 1;
+ ictx->in_dcd = 0;
+ sb_build_section(ictx, cmd);
+ return 0;
+ }
+
+ if (!ictx->in_section && !ictx->in_dcd) {
+ fprintf(stderr, "#%i ERR: Data outside of a section!\n",
+ cmd->lineno);
+ return -EINVAL;
+ }
+
+ if (ictx->in_section) {
+ /* Section commands */
+ if (!strcmp(tok, "NOP"))
+ ret = sb_build_command_nop(ictx);
+ else if (!strcmp(tok, "TAG"))
+ ret = sb_build_command_tag(ictx, cmd);
+ else if (!strcmp(tok, "LOAD"))
+ ret = sb_build_command_load(ictx, cmd);
+ else if (!strcmp(tok, "FILL"))
+ ret = sb_build_command_fill(ictx, cmd);
+ else if (!strcmp(tok, "JUMP"))
+ ret = sb_build_command_jump(ictx, cmd);
+ else if (!strcmp(tok, "CALL"))
+ ret = sb_build_command_call(ictx, cmd);
+ else if (!strcmp(tok, "MODE"))
+ ret = sb_build_command_mode(ictx, cmd);
+ else {
+ fprintf(stderr,
+ "#%i ERR: Unsupported instruction '%s'!\n",
+ cmd->lineno, tok);
+ return -ENOTSUP;
+ }
+ } else if (ictx->in_dcd) {
+ char *lptr;
+ uint32_t ilen;
+
+ tok = strtok_r(tok, ".", &lptr);
+ if (!tok || (strlen(tok) == 0) || (lptr && strlen(lptr) != 1)) {
+ fprintf(stderr, "#%i ERR: Invalid line!\n", cmd->lineno);
+ return -EINVAL;
+ }
+
+ if (lptr && (lptr[0] != '1' && lptr[0] != '2' && lptr[0] != '4')) {
+ fprintf(stderr, "#%i ERR: Invalid instruction width!\n",
+ cmd->lineno);
+ return -EINVAL;
+ }
+
+ if (lptr)
+ ilen = lptr[0] - '1';
+
+ /* DCD commands */
+ if (!strcmp(tok, "WRITE"))
+ ret = sb_build_dcd_block(ictx, cmd, SB_DCD_WRITE | ilen);
+ else if (!strcmp(tok, "ANDC"))
+ ret = sb_build_dcd_block(ictx, cmd, SB_DCD_ANDC | ilen);
+ else if (!strcmp(tok, "ORR"))
+ ret = sb_build_dcd_block(ictx, cmd, SB_DCD_ORR | ilen);
+ else if (!strcmp(tok, "EQZ"))
+ ret = sb_build_dcd_block(ictx, cmd, SB_DCD_CHK_EQZ | ilen);
+ else if (!strcmp(tok, "EQ"))
+ ret = sb_build_dcd_block(ictx, cmd, SB_DCD_CHK_EQ | ilen);
+ else if (!strcmp(tok, "NEQ"))
+ ret = sb_build_dcd_block(ictx, cmd, SB_DCD_CHK_NEQ | ilen);
+ else if (!strcmp(tok, "NEZ"))
+ ret = sb_build_dcd_block(ictx, cmd, SB_DCD_CHK_NEZ | ilen);
+ else if (!strcmp(tok, "NOOP"))
+ ret = sb_build_dcd_block(ictx, cmd, SB_DCD_NOOP);
+ else {
+ fprintf(stderr,
+ "#%i ERR: Unsupported instruction '%s'!\n",
+ cmd->lineno, tok);
+ return -ENOTSUP;
+ }
+ } else {
+ fprintf(stderr, "#%i ERR: Unsupported instruction '%s'!\n",
+ cmd->lineno, tok);
+ return -ENOTSUP;
+ }
+
+ /*
+ * Here we have at least one section with one command, otherwise we
+ * would have failed already higher above.
+ *
+ * FIXME -- should the updating happen here ?
+ */
+ if (ictx->in_section && !ret) {
+ ictx->sect_tail->size += ictx->sect_tail->cmd_tail->size;
+ ictx->sect_tail->payload.section_size = ictx->sect_tail->size / SB_BLOCK_SIZE;
+ }
+
+ return ret;
+}
+
+static int sb_load_cmdfile(struct sb_image_ctx *ictx)
+{
+ struct sb_cmd_list cmd;
+ int lineno = 1;
+ FILE *fp;
+ char *line = NULL;
+ ssize_t rlen;
+ size_t len;
+
+ fp = fopen(ictx->cfg_filename, "r");
+ if (!fp)
+ goto err_file;
+
+ while ((rlen = getline(&line, &len, fp)) > 0) {
+ memset(&cmd, 0, sizeof(cmd));
+
+ /* Strip the trailing newline. */
+ line[rlen - 1] = '\0';
+
+ cmd.cmd = line;
+ cmd.len = rlen;
+ cmd.lineno = lineno++;
+
+ sb_parse_line(ictx, &cmd);
+ }
+
+ free(line);
+
+ fclose(fp);
+
+ return 0;
+
+err_file:
+ fclose(fp);
+ fprintf(stderr, "ERR: Failed to load file \"%s\"\n", ictx->cfg_filename);
+ return -EINVAL;
+
+}
+
+static int sb_build_tree_from_cfg(struct sb_image_ctx *ictx)
+{
+ int ret;
+
+ ret = sb_load_cmdfile(ictx);
+ if (ret)
+ return ret;
+
+ ret = sb_prefill_image_header(ictx);
+ if (ret)
+ return ret;
+
+ ret = sb_postfill_image_header(ictx);
+ if (ret)
+ return ret;
+
+ ret = sb_fixup_sections_and_tags(ictx);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int sb_verify_image_header(struct sb_image_ctx *ictx,
+ FILE *fp, long fsize)
+{
+ /* Verify static fields in the image header. */
+ struct sb_boot_image_header *hdr = &ictx->payload;
+ const char *stat[2] = { "[PASS]", "[FAIL]" };
+ struct tm tm;
+ int sz, ret = 0;
+ unsigned char digest[20];
+ EVP_MD_CTX md_ctx;
+ unsigned long size;
+
+ /* Start image-wide crypto. */
+ EVP_MD_CTX_init(&ictx->md_ctx);
+ EVP_DigestInit(&ictx->md_ctx, EVP_sha1());
+
+ soprintf(ictx, "---------- Verifying SB Image Header ----------\n");
+
+ size = fread(&ictx->payload, 1, sizeof(ictx->payload), fp);
+ if (size != sizeof(ictx->payload)) {
+ fprintf(stderr, "ERR: SB image header too short!\n");
+ return -EINVAL;
+ }
+
+ /* Compute header digest. */
+ EVP_MD_CTX_init(&md_ctx);
+ EVP_DigestInit(&md_ctx, EVP_sha1());
+ EVP_DigestUpdate(&md_ctx, hdr->signature1,
+ sizeof(struct sb_boot_image_header) -
+ sizeof(hdr->digest));
+ EVP_DigestFinal(&md_ctx, digest, NULL);
+
+ sb_aes_init(ictx, NULL, 1);
+ sb_encrypt_sb_header(ictx);
+
+ if (memcmp(digest, hdr->digest, 20))
+ ret = -EINVAL;
+ soprintf(ictx, "%s Image header checksum: %s\n", stat[!!ret],
+ ret ? "BAD" : "OK");
+ if (ret)
+ return ret;
+
+ if (memcmp(hdr->signature1, "STMP", 4) ||
+ memcmp(hdr->signature2, "sgtl", 4))
+ ret = -EINVAL;
+ soprintf(ictx, "%s Signatures: '%.4s' '%.4s'\n",
+ stat[!!ret], hdr->signature1, hdr->signature2);
+ if (ret)
+ return ret;
+
+ if ((hdr->major_version != SB_VERSION_MAJOR) ||
+ ((hdr->minor_version != 1) && (hdr->minor_version != 2)))
+ ret = -EINVAL;
+ soprintf(ictx, "%s Image version: v%i.%i\n", stat[!!ret],
+ hdr->major_version, hdr->minor_version);
+ if (ret)
+ return ret;
+
+ ret = sb_get_time(hdr->timestamp_us / 1000000, &tm);
+ soprintf(ictx, "%s Creation time: "
+ "%02i:%02i:%02i %02i/%02i/%04i\n",
+ stat[!!ret], tm.tm_hour, tm.tm_min, tm.tm_sec,
+ tm.tm_mday, tm.tm_mon, tm.tm_year + 2000);
+ if (ret)
+ return ret;
+
+ soprintf(ictx, "%s Product version: %x.%x.%x\n", stat[0],
+ ntohs(hdr->product_version.major),
+ ntohs(hdr->product_version.minor),
+ ntohs(hdr->product_version.revision));
+ soprintf(ictx, "%s Component version: %x.%x.%x\n", stat[0],
+ ntohs(hdr->component_version.major),
+ ntohs(hdr->component_version.minor),
+ ntohs(hdr->component_version.revision));
+
+ if (hdr->flags & ~SB_IMAGE_FLAG_VERBOSE)
+ ret = -EINVAL;
+ soprintf(ictx, "%s Image flags: %s\n", stat[!!ret],
+ hdr->flags & SB_IMAGE_FLAG_VERBOSE ? "Verbose_boot" : "");
+ if (ret)
+ return ret;
+
+ if (hdr->drive_tag != 0)
+ ret = -EINVAL;
+ soprintf(ictx, "%s Drive tag: %i\n", stat[!!ret],
+ hdr->drive_tag);
+ if (ret)
+ return ret;
+
+ sz = sizeof(struct sb_boot_image_header) / SB_BLOCK_SIZE;
+ if (hdr->header_blocks != sz)
+ ret = -EINVAL;
+ soprintf(ictx, "%s Image header size (blocks): %i\n", stat[!!ret],
+ hdr->header_blocks);
+ if (ret)
+ return ret;
+
+ sz = sizeof(struct sb_sections_header) / SB_BLOCK_SIZE;
+ if (hdr->section_header_size != sz)
+ ret = -EINVAL;
+ soprintf(ictx, "%s Section header size (blocks): %i\n", stat[!!ret],
+ hdr->section_header_size);
+ if (ret)
+ return ret;
+
+ soprintf(ictx, "%s Sections count: %i\n", stat[!!ret],
+ hdr->section_count);
+ soprintf(ictx, "%s First bootable section %i\n", stat[!!ret],
+ hdr->first_boot_section_id);
+
+ if (hdr->image_blocks != fsize / SB_BLOCK_SIZE)
+ ret = -EINVAL;
+ soprintf(ictx, "%s Image size (blocks): %i\n", stat[!!ret],
+ hdr->image_blocks);
+ if (ret)
+ return ret;
+
+ sz = hdr->header_blocks + hdr->section_header_size * hdr->section_count;
+ if (hdr->key_dictionary_block != sz)
+ ret = -EINVAL;
+ soprintf(ictx, "%s Key dict offset (blocks): %i\n", stat[!!ret],
+ hdr->key_dictionary_block);
+ if (ret)
+ return ret;
+
+ if (hdr->key_count != 1)
+ ret = -EINVAL;
+ soprintf(ictx, "%s Number of encryption keys: %i\n", stat[!!ret],
+ hdr->key_count);
+ if (ret)
+ return ret;
+
+ sz = hdr->header_blocks + hdr->section_header_size * hdr->section_count;
+ sz += hdr->key_count * sizeof(struct sb_key_dictionary_key) / SB_BLOCK_SIZE;
+ if (hdr->first_boot_tag_block != (unsigned)sz)
+ ret = -EINVAL;
+ soprintf(ictx, "%s First TAG block (blocks): %i\n", stat[!!ret],
+ hdr->first_boot_tag_block);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static void sb_decrypt_tag(struct sb_image_ctx *ictx,
+ struct sb_cmd_ctx *cctx)
+{
+ EVP_MD_CTX *md_ctx = &ictx->md_ctx;
+ struct sb_command *cmd = &cctx->payload;
+
+ sb_aes_crypt(ictx, (uint8_t *)&cctx->c_payload,
+ (uint8_t *)&cctx->payload, sizeof(*cmd));
+ EVP_DigestUpdate(md_ctx, &cctx->c_payload, sizeof(*cmd));
+}
+
+static int sb_verify_command(struct sb_image_ctx *ictx,
+ struct sb_cmd_ctx *cctx, FILE *fp,
+ unsigned long *tsize)
+{
+ struct sb_command *ccmd = &cctx->payload;
+ unsigned long size, asize;
+ char *csum, *flag = "";
+ int ret;
+ unsigned int i;
+ uint8_t csn, csc = ccmd->header.checksum;
+ ccmd->header.checksum = 0x5a;
+ csn = sb_command_checksum(ccmd);
+ ccmd->header.checksum = csc;
+
+ if (csc == csn)
+ ret = 0;
+ else
+ ret = -EINVAL;
+ csum = ret ? "checksum BAD" : "checksum OK";
+
+ switch (ccmd->header.tag) {
+ case ROM_NOP_CMD:
+ soprintf(ictx, " NOOP # %s\n", csum);
+ return ret;
+ case ROM_TAG_CMD:
+ if (ccmd->header.flags & ROM_TAG_CMD_FLAG_ROM_LAST_TAG)
+ flag = "LAST";
+ soprintf(ictx, " TAG %s # %s\n", flag, csum);
+ sb_aes_reinit(ictx, 0);
+ return ret;
+ case ROM_LOAD_CMD:
+ soprintf(ictx, " LOAD addr=0x%08x length=0x%08x # %s\n",
+ ccmd->load.address, ccmd->load.count, csum);
+
+ cctx->length = ccmd->load.count;
+ asize = roundup(cctx->length, SB_BLOCK_SIZE);
+ cctx->data = malloc(asize);
+ if (!cctx->data)
+ return -ENOMEM;
+
+ size = fread(cctx->data, 1, asize, fp);
+ if (size != asize) {
+ fprintf(stderr,
+ "ERR: SB LOAD command payload too short!\n");
+ return -EINVAL;
+ }
+
+ *tsize += size;
+
+ EVP_DigestUpdate(&ictx->md_ctx, cctx->data, asize);
+ sb_aes_crypt(ictx, cctx->data, cctx->data, asize);
+
+ if (ccmd->load.crc32 != crc32(cctx->data, asize)) {
+ fprintf(stderr,
+ "ERR: SB LOAD command payload CRC32 invalid!\n");
+ return -EINVAL;
+ }
+ return 0;
+ case ROM_FILL_CMD:
+ soprintf(ictx,
+ " FILL addr=0x%08x length=0x%08x pattern=0x%08x # %s\n",
+ ccmd->fill.address, ccmd->fill.count,
+ ccmd->fill.pattern, csum);
+ return 0;
+ case ROM_JUMP_CMD:
+ if (ccmd->header.flags & ROM_JUMP_CMD_FLAG_HAB)
+ flag = " HAB";
+ soprintf(ictx,
+ " JUMP%s addr=0x%08x r0_arg=0x%08x # %s\n",
+ flag, ccmd->fill.address, ccmd->jump.argument, csum);
+ return 0;
+ case ROM_CALL_CMD:
+ if (ccmd->header.flags & ROM_CALL_CMD_FLAG_HAB)
+ flag = " HAB";
+ soprintf(ictx,
+ " CALL%s addr=0x%08x r0_arg=0x%08x # %s\n",
+ flag, ccmd->fill.address, ccmd->jump.argument, csum);
+ return 0;
+ case ROM_MODE_CMD:
+ for (i = 0; i < ARRAY_SIZE(modetable); i++) {
+ if (ccmd->mode.mode == modetable[i].mode) {
+ soprintf(ictx, " MODE %s # %s\n",
+ modetable[i].name, csum);
+ break;
+ }
+ }
+ fprintf(stderr, " MODE !INVALID! # %s\n", csum);
+ return 0;
+ }
+
+ return ret;
+}
+
+static int sb_verify_commands(struct sb_image_ctx *ictx,
+ struct sb_section_ctx *sctx, FILE *fp)
+{
+ unsigned long size, tsize = 0;
+ struct sb_cmd_ctx *cctx;
+ int ret;
+
+ sb_aes_reinit(ictx, 0);
+
+ while (tsize < sctx->size) {
+ cctx = calloc(1, sizeof(*cctx));
+ if (!cctx)
+ return -ENOMEM;
+ if (!sctx->cmd_head) {
+ sctx->cmd_head = cctx;
+ sctx->cmd_tail = cctx;
+ } else {
+ sctx->cmd_tail->cmd = cctx;
+ sctx->cmd_tail = cctx;
+ }
+
+ size = fread(&cctx->c_payload, 1, sizeof(cctx->c_payload), fp);
+ if (size != sizeof(cctx->c_payload)) {
+ fprintf(stderr, "ERR: SB command header too short!\n");
+ return -EINVAL;
+ }
+
+ tsize += size;
+
+ sb_decrypt_tag(ictx, cctx);
+
+ ret = sb_verify_command(ictx, cctx, fp, &tsize);
+ if (ret)
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int sb_verify_sections_cmds(struct sb_image_ctx *ictx, FILE *fp)
+{
+ struct sb_boot_image_header *hdr = &ictx->payload;
+ struct sb_sections_header *shdr;
+ unsigned int i;
+ int ret;
+ struct sb_section_ctx *sctx;
+ unsigned long size;
+ char *bootable = "";
+
+ soprintf(ictx, "----- Verifying SB Sections and Commands -----\n");
+
+ for (i = 0; i < hdr->section_count; i++) {
+ sctx = calloc(1, sizeof(*sctx));
+ if (!sctx)
+ return -ENOMEM;
+ if (!ictx->sect_head) {
+ ictx->sect_head = sctx;
+ ictx->sect_tail = sctx;
+ } else {
+ ictx->sect_tail->sect = sctx;
+ ictx->sect_tail = sctx;
+ }
+
+ size = fread(&sctx->payload, 1, sizeof(sctx->payload), fp);
+ if (size != sizeof(sctx->payload)) {
+ fprintf(stderr, "ERR: SB section header too short!\n");
+ return -EINVAL;
+ }
+ }
+
+ size = fread(&ictx->sb_dict_key, 1, sizeof(ictx->sb_dict_key), fp);
+ if (size != sizeof(ictx->sb_dict_key)) {
+ fprintf(stderr, "ERR: SB key dictionary too short!\n");
+ return -EINVAL;
+ }
+
+ sb_encrypt_sb_sections_header(ictx);
+ sb_aes_reinit(ictx, 0);
+ sb_decrypt_key_dictionary_key(ictx);
+
+ sb_aes_reinit(ictx, 0);
+
+ sctx = ictx->sect_head;
+ while (sctx) {
+ shdr = &sctx->payload;
+
+ if (shdr->section_flags & SB_SECTION_FLAG_BOOTABLE) {
+ sctx->boot = 1;
+ bootable = " BOOTABLE";
+ }
+
+ sctx->size = (shdr->section_size * SB_BLOCK_SIZE) +
+ sizeof(struct sb_command);
+ soprintf(ictx, "SECTION 0x%x%s # size = %i bytes\n",
+ shdr->section_number, bootable, sctx->size);
+
+ if (shdr->section_flags & ~SB_SECTION_FLAG_BOOTABLE)
+ fprintf(stderr, " WARN: Unknown section flag(s) %08x\n",
+ shdr->section_flags);
+
+ if ((shdr->section_flags & SB_SECTION_FLAG_BOOTABLE) &&
+ (hdr->first_boot_section_id != shdr->section_number))
+ fprintf(stderr, " WARN: Bootable section does ID not match image header ID!\n");
+
+ ret = sb_verify_commands(ictx, sctx, fp);
+ if (ret)
+ return ret;
+
+ sctx = sctx->sect;
+ }
+
+ /*
+ * FIXME IDEA:
+ * check if the first TAG command is at sctx->section_offset
+ */
+ return 0;
+}
+
+static int sb_verify_image_end(struct sb_image_ctx *ictx, FILE *fp, off_t filesz)
+{
+ uint8_t digest[32];
+ unsigned long size;
+ off_t pos;
+ int ret;
+
+ soprintf(ictx, "------------- Verifying image end -------------\n");
+
+ size = fread(digest, 1, sizeof(digest), fp);
+ if (size != sizeof(digest)) {
+ fprintf(stderr, "ERR: SB key dictionary too short!\n");
+ return -EINVAL;
+ }
+
+ pos = ftell(fp);
+ if (pos != filesz) {
+ fprintf(stderr, "ERR: Trailing data past the image!\n");
+ return -EINVAL;
+ }
+
+ /* Check the image digest. */
+ EVP_DigestFinal(&ictx->md_ctx, ictx->digest, NULL);
+
+ /* Decrypt the image digest from the input image. */
+ sb_aes_reinit(ictx, 0);
+ sb_aes_crypt(ictx, digest, digest, sizeof(digest));
+
+ /* Check all of 20 bytes of the SHA1 hash. */
+ ret = memcmp(digest, ictx->digest, 20) ? -EINVAL : 0;
+
+ if (ret)
+ soprintf(ictx, "[FAIL] Full-image checksum: BAD\n");
+ else
+ soprintf(ictx, "[PASS] Full-image checksum: OK\n");
+
+ return ret;
+}
+
+
+static int sb_build_tree_from_img(struct sb_image_ctx *ictx)
+{
+ long filesize;
+ int ret;
+ FILE *fp;
+
+ if (!ictx->input_filename) {
+ fprintf(stderr, "ERR: Missing filename!\n");
+ return -EINVAL;
+ }
+
+ fp = fopen(ictx->input_filename, "r");
+ if (!fp)
+ goto err_open;
+
+ ret = fseek(fp, 0, SEEK_END);
+ if (ret < 0)
+ goto err_file;
+
+ filesize = ftell(fp);
+ if (filesize < 0)
+ goto err_file;
+
+ ret = fseek(fp, 0, SEEK_SET);
+ if (ret < 0)
+ goto err_file;
+
+ if (filesize < (signed)sizeof(ictx->payload)) {
+ fprintf(stderr, "ERR: File too short!\n");
+ goto err_file;
+ }
+
+ if (filesize & (SB_BLOCK_SIZE - 1)) {
+ fprintf(stderr, "ERR: The file is not aligned!\n");
+ goto err_file;
+ }
+
+ /* Load and verify image header */
+ ret = sb_verify_image_header(ictx, fp, filesize);
+ if (ret)
+ goto err_verify;
+
+ /* Load and verify sections and commands */
+ ret = sb_verify_sections_cmds(ictx, fp);
+ if (ret)
+ goto err_verify;
+
+ ret = sb_verify_image_end(ictx, fp, filesize);
+ if (ret)
+ goto err_verify;
+
+ ret = 0;
+
+err_verify:
+ soprintf(ictx, "-------------------- Result -------------------\n");
+ soprintf(ictx, "Verification %s\n", ret ? "FAILED" : "PASSED");
+
+ /* Stop the encryption session. */
+ sb_aes_deinit(&ictx->cipher_ctx);
+
+ fclose(fp);
+ return ret;
+
+err_file:
+ fclose(fp);
+err_open:
+ fprintf(stderr, "ERR: Failed to load file \"%s\"\n", ictx->input_filename);
+ return -EINVAL;
+}
+
+static void sb_free_image(struct sb_image_ctx *ictx)
+{
+ struct sb_section_ctx *sctx = ictx->sect_head, *s_head;
+ struct sb_dcd_ctx *dctx = ictx->dcd_head, *d_head;
+ struct sb_cmd_ctx *cctx, *c_head;
+
+ while (sctx) {
+ s_head = sctx;
+ c_head = sctx->cmd_head;
+
+ while (c_head) {
+ cctx = c_head;
+ c_head = c_head->cmd;
+ if (cctx->data)
+ free(cctx->data);
+ free(cctx);
+ }
+
+ sctx = sctx->sect;
+ free(s_head);
+ }
+
+ while (dctx) {
+ d_head = dctx;
+ dctx = dctx->dcd;
+ free(d_head->payload);
+ free(d_head);
+ }
+}
+
+/*
+ * MXSSB-MKIMAGE glue code.
+ */
+static int mxsimage_check_image_types(uint8_t type)
+{
+ if (type == IH_TYPE_MXSIMAGE)
+ return EXIT_SUCCESS;
+ else
+ return EXIT_FAILURE;
+}
+
+static void mxsimage_set_header(void *ptr, struct stat *sbuf, int ifd,
+ struct mkimage_params *params)
+{
+}
+
+int mxsimage_check_params(struct mkimage_params *params)
+{
+ if (!params)
+ return -1;
+ if (!strlen(params->imagename)) {
+ fprintf(stderr, "Error: %s - Configuration file not specified, "
+ "it is needed for mxsimage generation\n",
+ params->cmdname);
+ return -1;
+ }
+
+ /*
+ * Check parameters:
+ * XIP is not allowed and verify that incompatible
+ * parameters are not sent at the same time
+ * For example, if list is required a data image must not be provided
+ */
+ return (params->dflag && (params->fflag || params->lflag)) ||
+ (params->fflag && (params->dflag || params->lflag)) ||
+ (params->lflag && (params->dflag || params->fflag)) ||
+ (params->xflag) || !(strlen(params->imagename));
+}
+
+static int mxsimage_verify_print_header(char *file, int silent)
+{
+ int ret;
+ struct sb_image_ctx ctx;
+
+ memset(&ctx, 0, sizeof(ctx));
+
+ ctx.input_filename = file;
+ ctx.silent_dump = silent;
+
+ ret = sb_build_tree_from_img(&ctx);
+ sb_free_image(&ctx);
+
+ return ret;
+}
+
+char *imagefile;
+static int mxsimage_verify_header(unsigned char *ptr, int image_size,
+ struct mkimage_params *params)
+{
+ struct sb_boot_image_header *hdr;
+
+ if (!ptr)
+ return -EINVAL;
+
+ hdr = (struct sb_boot_image_header *)ptr;
+
+ /*
+ * Check if the header contains the MXS image signatures,
+ * if so, do a full-image verification.
+ */
+ if (memcmp(hdr->signature1, "STMP", 4) ||
+ memcmp(hdr->signature2, "sgtl", 4))
+ return -EINVAL;
+
+ imagefile = params->imagefile;
+
+ return mxsimage_verify_print_header(params->imagefile, 1);
+}
+
+static void mxsimage_print_header(const void *hdr)
+{
+ if (imagefile)
+ mxsimage_verify_print_header(imagefile, 0);
+}
+
+static int sb_build_image(struct sb_image_ctx *ictx,
+ struct image_type_params *tparams)
+{
+ struct sb_boot_image_header *sb_header = &ictx->payload;
+ struct sb_section_ctx *sctx;
+ struct sb_cmd_ctx *cctx;
+ struct sb_command *ccmd;
+ struct sb_key_dictionary_key *sb_dict_key = &ictx->sb_dict_key;
+
+ uint8_t *image, *iptr;
+
+ /* Calculate image size. */
+ uint32_t size = sizeof(*sb_header) +
+ ictx->sect_count * sizeof(struct sb_sections_header) +
+ sizeof(*sb_dict_key) + sizeof(ictx->digest);
+
+ sctx = ictx->sect_head;
+ while (sctx) {
+ size += sctx->size;
+ sctx = sctx->sect;
+ };
+
+ image = malloc(size);
+ if (!image)
+ return -ENOMEM;
+ iptr = image;
+
+ memcpy(iptr, sb_header, sizeof(*sb_header));
+ iptr += sizeof(*sb_header);
+
+ sctx = ictx->sect_head;
+ while (sctx) {
+ memcpy(iptr, &sctx->payload, sizeof(struct sb_sections_header));
+ iptr += sizeof(struct sb_sections_header);
+ sctx = sctx->sect;
+ };
+
+ memcpy(iptr, sb_dict_key, sizeof(*sb_dict_key));
+ iptr += sizeof(*sb_dict_key);
+
+ sctx = ictx->sect_head;
+ while (sctx) {
+ cctx = sctx->cmd_head;
+ while (cctx) {
+ ccmd = &cctx->payload;
+
+ memcpy(iptr, &cctx->c_payload, sizeof(cctx->payload));
+ iptr += sizeof(cctx->payload);
+
+ if (ccmd->header.tag == ROM_LOAD_CMD) {
+ memcpy(iptr, cctx->data, cctx->length);
+ iptr += cctx->length;
+ }
+
+ cctx = cctx->cmd;
+ }
+
+ sctx = sctx->sect;
+ };
+
+ memcpy(iptr, ictx->digest, sizeof(ictx->digest));
+ iptr += sizeof(ictx->digest);
+
+ /* Configure the mkimage */
+ tparams->hdr = image;
+ tparams->header_size = size;
+
+ return 0;
+}
+
+static int mxsimage_generate(struct mkimage_params *params,
+ struct image_type_params *tparams)
+{
+ int ret;
+ struct sb_image_ctx ctx;
+
+ /* Do not copy the U-Boot image! */
+ params->skipcpy = 1;
+
+ memset(&ctx, 0, sizeof(ctx));
+
+ ctx.cfg_filename = params->imagename;
+ ctx.output_filename = params->imagefile;
+ ctx.verbose_boot = 1;
+
+ ret = sb_build_tree_from_cfg(&ctx);
+ if (ret)
+ goto fail;
+
+ ret = sb_encrypt_image(&ctx);
+ if (!ret)
+ ret = sb_build_image(&ctx, tparams);
+
+fail:
+ sb_free_image(&ctx);
+
+ return ret;
+}
+
+/*
+ * mxsimage parameters
+ */
+static struct image_type_params mxsimage_params = {
+ .name = "Freescale MXS Boot Image support",
+ .header_size = 0,
+ .hdr = NULL,
+ .check_image_type = mxsimage_check_image_types,
+ .verify_header = mxsimage_verify_header,
+ .print_header = mxsimage_print_header,
+ .set_header = mxsimage_set_header,
+ .check_params = mxsimage_check_params,
+ .vrec_header = mxsimage_generate,
+};
+
+void init_mxs_image_type(void)
+{
+ mkimage_register(&mxsimage_params);
+}
diff --git a/tools/mxsimage.h b/tools/mxsimage.h
new file mode 100644
index 0000000..6d5ce8f
--- /dev/null
+++ b/tools/mxsimage.h
@@ -0,0 +1,203 @@
+/*
+ * Freescale i.MX28 SB image generator
+ *
+ * Copyright (C) 2012 Marek Vasut <marex at denx.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __MXSSB_H__
+#define __MXSSB_H__
+
+#include <stdint.h>
+#include <arpa/inet.h>
+
+#define SB_BLOCK_SIZE 16
+
+#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+struct sb_boot_image_version {
+ uint16_t major;
+ uint16_t pad0;
+ uint16_t minor;
+ uint16_t pad1;
+ uint16_t revision;
+ uint16_t pad2;
+};
+
+struct sb_boot_image_header {
+ union {
+ uint8_t digest[20]; /* SHA1 of the header. */
+ struct {
+ uint8_t iv[16]; /* CBC-MAC initialization vector. */
+ uint8_t extra[4];
+ };
+ };
+ uint8_t signature1[4]; /* 'STMP' */
+ uint8_t major_version; /* Major version of the image format. */
+ uint8_t minor_version; /* Minor version of the image format. */
+ uint16_t flags; /* Flags associated with the image. */
+ uint32_t image_blocks; /* Size of the image in 16b blocks. */
+ uint32_t first_boot_tag_block; /* Offset of the first tag in 16b blocks. */
+ uint32_t first_boot_section_id; /* ID of the section to boot from. */
+ uint16_t key_count; /* Amount of crypto keys. */
+ uint16_t key_dictionary_block; /* Offset to the key dictionary in 16b blocks. */
+ uint16_t header_blocks; /* Size of this header in 16b blocks. */
+ uint16_t section_count; /* Amount of section headers. */
+ uint16_t section_header_size; /* Section header size in 16b blocks. */
+ uint8_t padding0[2]; /* Padding to align timestamp to uint64_t. */
+ uint8_t signature2[4]; /* 'sgtl' (since v1.1) */
+ uint64_t timestamp_us; /* Image generation date, in microseconds since 1.1.2000 . */
+ struct sb_boot_image_version
+ product_version; /* Product version. */
+ struct sb_boot_image_version
+ component_version; /* Component version. */
+ uint16_t drive_tag; /* Drive tag for the system drive. (since v1.1) */
+ uint8_t padding1[6]; /* Padding. */
+};
+
+#define SB_VERSION_MAJOR 1
+#define SB_VERSION_MINOR 1
+
+#define SB_IMAGE_FLAG_VERBOSE (1 << 0) /* Enable to HTLLC verbose boot report. */
+
+struct sb_key_dictionary_key {
+ uint8_t cbc_mac[SB_BLOCK_SIZE]; /* The CBC-MAC of image and sections header. */
+ uint8_t key[SB_BLOCK_SIZE]; /* The AES key encrypted by image key (zero). */
+};
+
+struct sb_ivt_header {
+ uint32_t header;
+ uint32_t entry;
+ uint32_t reserved1;
+ uint32_t dcd;
+ uint32_t boot_data;
+ uint32_t self;
+ uint32_t csf;
+ uint32_t reserved2;
+};
+
+#define SB_HAB_IVT_TAG 0xd1UL
+#define SB_HAB_DCD_TAG 0xd2UL
+
+#define SB_HAB_VERSION 0x40UL
+
+/*
+ * The "size" field in the IVT header is not naturally aligned,
+ * use this macro to fill first 4 bytes of the IVT header without
+ * causing issues on some systems (esp. M68k, PPC, MIPS-BE, ARM-BE).
+ */
+static inline uint32_t sb_hab_ivt_header(void)
+{
+ uint32_t ret = 0;
+ ret |= SB_HAB_IVT_TAG << 24;
+ ret |= sizeof(struct sb_ivt_header) << 16;
+ ret |= SB_HAB_VERSION;
+ return htonl(ret);
+}
+
+struct sb_sections_header {
+ uint32_t section_number; /* Section number. */
+ uint32_t section_offset; /* Offset of this sections first instruction after "TAG". */
+ uint32_t section_size; /* Size of the section in 16b blocks. */
+ uint32_t section_flags; /* Section flags. */
+};
+
+#define SB_SECTION_FLAG_BOOTABLE (1 << 0)
+
+struct sb_command {
+ struct {
+ uint8_t checksum;
+ uint8_t tag;
+ uint16_t flags;
+#define ROM_TAG_CMD_FLAG_ROM_LAST_TAG 0x1
+#define ROM_LOAD_CMD_FLAG_DCD_LOAD 0x1 /* MX28 only */
+#define ROM_JUMP_CMD_FLAG_HAB 0x1 /* MX28 only */
+#define ROM_CALL_CMD_FLAG_HAB 0x1 /* MX28 only */
+ } header;
+
+ union {
+
+ struct {
+ uint32_t reserved[3];
+ } nop;
+ struct {
+ uint32_t section_number;
+ uint32_t section_length;
+ uint32_t section_flags;
+ } tag;
+ struct {
+ uint32_t address;
+ uint32_t count;
+ uint32_t crc32;
+ } load;
+ struct {
+ uint32_t address;
+ uint32_t count;
+ uint32_t pattern;
+ } fill;
+ struct {
+ uint32_t address;
+ uint32_t reserved;
+ /* Passed in register r0 before JUMP */
+ uint32_t argument;
+ } jump;
+ struct {
+ uint32_t address;
+ uint32_t reserved;
+ /* Passed in register r0 before CALL */
+ uint32_t argument;
+ } call;
+ struct {
+ uint32_t reserved1;
+ uint32_t reserved2;
+ uint32_t mode;
+ } mode;
+
+ };
+};
+
+/*
+ * Most of the mode names are same or at least similar
+ * on i.MX23 and i.MX28, but some of the mode names
+ * differ. The "name" field represents the mode name
+ * on i.MX28 as seen in Table 12-2 of the datasheet.
+ * The "altname" field represents the differently named
+ * fields on i.MX23 as seen in Table 35-3 of the
+ * datasheet.
+ */
+static const struct {
+ const char *name;
+ const char *altname;
+ const uint8_t mode;
+} modetable[] = {
+ { "USB", NULL, 0x00 },
+ { "I2C", NULL, 0x01 },
+ { "SPI2_FLASH", "SPI1_FLASH", 0x02 },
+ { "SPI3_FLASH", "SPI2_FLASH", 0x03 },
+ { "NAND_BCH", NULL, 0x04 },
+ { "JTAG", NULL, 0x06 },
+ { "SPI3_EEPROM", "SPI2_EEPROM", 0x08 },
+ { "SD_SSP0", NULL, 0x09 },
+ { "SD_SSP1", NULL, 0x0A }
+};
+
+enum sb_tag {
+ ROM_NOP_CMD = 0x00,
+ ROM_TAG_CMD = 0x01,
+ ROM_LOAD_CMD = 0x02,
+ ROM_FILL_CMD = 0x03,
+ ROM_JUMP_CMD = 0x04,
+ ROM_CALL_CMD = 0x05,
+ ROM_MODE_CMD = 0x06
+};
+
+struct sb_source_entry {
+ uint8_t tag;
+ uint32_t address;
+ uint32_t flags;
+ char *filename;
+};
+
+#endif /* __MXSSB_H__ */
--
1.7.10.4
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