From 1a0ab91a746487301a30ecef2b2f95d40527f3da Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Fri, 4 May 2012 22:07:52 +0200 Subject: [PATCH] carl9170 firmware: add radar pattern generator This - rather large - patch includes parts of a future radar pattern generator which hopefully can be used for testing DFS without having to resort to expensive hardware. The basic concept has been successfully tested with p54 [firmware detector - easy to fool] . But, that does not mean it works with other devices just as well (or at all!). Note: This feature is WIP and it will not work out-of-the-box. Part of the patterns have been tested by Ben Greear and shown to work. YMMV! Signed-off-by: Christian Lamparter --- autogen.sh | 3 + carlfw/CMakeLists.txt | 2 +- carlfw/Kconfig | 10 ++ carlfw/include/carl9170.h | 6 ++ carlfw/include/fwdsc.h | 3 + carlfw/include/pattern_generator.h | 42 ++++++++ carlfw/include/timer.h | 5 + carlfw/src/fw.c | 13 ++- carlfw/src/main.c | 3 + carlfw/src/pattern_generator.c | 57 +++++++++++ include/pattern.h | 156 ++++++++++++++++++++++++++++ include/shared/fwdesc.h | 19 ++++ tools/.gitignore | 1 + tools/src/CMakeLists.txt | 2 +- tools/src/fwinfo.c | 20 ++++ tools/src/fwprepare.c | 158 +++++++++++++++++++++++++++++ 16 files changed, 497 insertions(+), 3 deletions(-) create mode 100644 carlfw/include/pattern_generator.h create mode 100644 carlfw/src/pattern_generator.c create mode 100644 include/pattern.h create mode 100644 tools/src/fwprepare.c diff --git a/autogen.sh b/autogen.sh index a360065..c8e9f9c 100755 --- a/autogen.sh +++ b/autogen.sh @@ -29,6 +29,9 @@ case "$1" in echo -n "Installing firmware..." if [ "$CONFIG_CARL9170FW_BUILD_TOOLS" = "y" ]; then + echo -n "Prepare firmware image..." + tools/src/fwprepare carlfw/carl9170.fw + if [ "$CONFIG_CARL9170FW_BUILD_MINIBOOT" = "y" ]; then echo -n "Apply miniboot..." # also adds checksum diff --git a/carlfw/CMakeLists.txt b/carlfw/CMakeLists.txt index 02c80bf..1ca0961 100644 --- a/carlfw/CMakeLists.txt +++ b/carlfw/CMakeLists.txt @@ -17,7 +17,7 @@ set(CARLFW_CFLAGS "${CARLFW_CFLAGS_DEF} ${CARLFW_CFLAGS_EXTRA} ${CARLFW_CFLAGS_A include_directories (../include/linux ../include/shared ../include include) set(carl9170_main_src src/main.c src/wlan.c src/wlanrx.c src/wlantx.c - src/fw.c src/gpio.c src/timer.c + src/fw.c src/gpio.c src/timer.c src/pattern_generator.c src/uart.c src/dma.c src/hostif.c src/reboot.S src/printf.c src/rf.c src/cam.c src/wol.c) diff --git a/carlfw/Kconfig b/carlfw/Kconfig index 46eb1bb..8583903 100644 --- a/carlfw/Kconfig +++ b/carlfw/Kconfig @@ -85,6 +85,16 @@ config CARL9170FW_EXPERIMENTAL def_bool y prompt "Experimental Features" +config CARL9170FW_PATTERN_GENERATOR + def_bool n + prompt "Pattern generator" + depends on CARL9170FW_EXPERIMENTAL + ---help--- + With this option enabled, the firmware can generate random + transmission pattern that might fool a reciever to believe + that there is an active radar on the channel. + Note: sadly, no SDR here. + config CARL9170FW_WOL_OPTION def_bool n prompt "Wakeup on WLAN" diff --git a/carlfw/include/carl9170.h b/carlfw/include/carl9170.h index 6e8a3e1..d17b896 100644 --- a/carlfw/include/carl9170.h +++ b/carlfw/include/carl9170.h @@ -139,6 +139,12 @@ struct firmware_context_struct { queued_ba; unsigned int queued_bar; + +#if defined(CONFIG_CARL9170FW_PATTERN_GENERATOR) + unsigned int soft_pattern, + pattern_last, + pattern_index; +#endif /* CONFIG_CARL9170FW_PATTERN_GENERATOR */ } wlan; struct { diff --git a/carlfw/include/fwdsc.h b/carlfw/include/fwdsc.h index de6d9d5..ce9ae8f 100644 --- a/carlfw/include/fwdsc.h +++ b/carlfw/include/fwdsc.h @@ -34,6 +34,9 @@ struct carl9170_firmware_descriptor { struct carl9170fw_wol_desc wol; #endif /* CONFIG_CARL9170FW_WOL */ struct carl9170fw_motd_desc motd; +#if defined(CONFIG_CARL9170FW_PATTERN_GENERATOR) + struct carl9170fw_pattern_desc pattern; +#endif /* CONFIG_CARL9170FW_PATTERN_GENERATOR */ struct carl9170fw_dbg_desc dbg; struct carl9170fw_last_desc last; } __packed; diff --git a/carlfw/include/pattern_generator.h b/carlfw/include/pattern_generator.h new file mode 100644 index 0000000..98e9c90 --- /dev/null +++ b/carlfw/include/pattern_generator.h @@ -0,0 +1,42 @@ +/* + * carl9170 firmware - used by the ar9170 wireless device + * + * Pattern Generator definitions + * + * Copyright 2012, 2013 Christian Lamparter + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef __CARL9170FW_PATTERN_GENERATOR_H +#define __CARL9170FW_PATTERN_GENERATOR_H + +#include "generated/autoconf.h" +#include "types.h" +#include "compiler.h" +#include "fwdesc.h" +#include "pattern.h" + +#if defined(CONFIG_CARL9170FW_PATTERN_GENERATOR) +void pattern_generator(void); + +#else +static inline void pattern_generator(void) +{ +} + +#endif /* CONFIG_CARL9170FW_PATTERN_GENERATOR */ + +#endif /* __CARL9170FW_PATTERN_GENERATOR_H */ diff --git a/carlfw/include/timer.h b/carlfw/include/timer.h index 43d6f2e..f15e6fb 100644 --- a/carlfw/include/timer.h +++ b/carlfw/include/timer.h @@ -49,6 +49,11 @@ static inline __inline bool is_after_msecs(const uint32_t t0, const uint32_t mse return ((get_clock_counter() - t0) / 1000) > (msecs * fw.ticks_per_usec); } +static inline __inline bool is_after_usecs(const uint32_t t0, const uint32_t usecs) +{ + return ((get_clock_counter() - t0)) > (usecs * fw.ticks_per_usec); +} + /* * Note: Be careful with [u]delay. They won't service the * hardware watchdog timer. It might trigger if you diff --git a/carlfw/src/fw.c b/carlfw/src/fw.c index 7ba152e..85a03fe 100644 --- a/carlfw/src/fw.c +++ b/carlfw/src/fw.c @@ -20,6 +20,7 @@ */ #include "carl9170.h" #include "fwdsc.h" +#include "pattern_generator.h" #define FILL(small, big, more...) \ .small = { \ @@ -64,6 +65,9 @@ const struct carl9170_firmware_descriptor __in_section(fwdsc) __visible carl9170 #ifdef CONFIG_CARL9170FW_WOL BIT(CARL9170FW_WOL) | #endif /* CONFIG_CARL9170FW_WOL */ +#if defined(CONFIG_CARL9170FW_PATTERN_GENERATOR) + BIT(CARL9170FW_PATTERN_GENERATOR) | +#endif /* CONFIG_CARL9170FW_PATTERN_GENERATOR */ (0)), .miniboot_size = cpu_to_le16(0), @@ -89,7 +93,6 @@ const struct carl9170_firmware_descriptor __in_section(fwdsc) __visible carl9170 ), #endif /* CONFIG_CARL9170FW_WOL */ - FILL(motd, MOTD, .fw_year_month_day = cpu_to_le32( CARL9170FW_SET_DAY(CARL9170FW_VERSION_DAY) + @@ -98,6 +101,14 @@ const struct carl9170_firmware_descriptor __in_section(fwdsc) __visible carl9170 .desc = "Community AR9170 Linux", .release = CARL9170FW_VERSION_GIT), +#if defined(CONFIG_CARL9170FW_PATTERN_GENERATOR) + FILL(pattern, PATTERN, + .soft_pattern = cpu_to_le32(&fw.wlan.soft_pattern), + .num_patterns = __CARL9170FW_NUM_PATTERNS, + .patterns = { /* filled by the fwprepare tool */ }, + ), +#endif /* CONFIG_CARL9170FW_RADAR */ + FILL(dbg, DBG, .bogoclock_addr = cpu_to_le32(0), .counter_addr = cpu_to_le32(&fw.counter), diff --git a/carlfw/src/main.c b/carlfw/src/main.c index 8c13bf8..8cb5fc1 100644 --- a/carlfw/src/main.c +++ b/carlfw/src/main.c @@ -30,6 +30,7 @@ #include "wl.h" #include "rf.h" #include "usb.h" +#include "pattern_generator.h" #define AR9170_WATCH_DOG_TIMER 0x100 @@ -124,6 +125,8 @@ static void __noreturn main_loop(void) handle_timer(); tally_update(); + + pattern_generator(); } } diff --git a/carlfw/src/pattern_generator.c b/carlfw/src/pattern_generator.c new file mode 100644 index 0000000..7cadb12 --- /dev/null +++ b/carlfw/src/pattern_generator.c @@ -0,0 +1,57 @@ +/* + * carl9170 firmware - used by the ar9170 wireless device + * + * pattern generator + * + * Copyright 2013 Christian Lamparter + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "carl9170.h" +#include "pattern_generator.h" +#include "fwdsc.h" +#include "timer.h" + +#if defined(CONFIG_CARL9170FW_PATTERN_GENERATOR) + +void pattern_generator(void) +{ + if (fw.phy.state == CARL9170_PHY_ON) { + if (likely(fw.wlan.soft_pattern == NO_PATTERN || + fw.wlan.soft_pattern >= __CARL9170FW_NUM_PATTERNS)) + return; + + const struct pattern_info *pattern = &patterns[fw.wlan.soft_pattern]; + if (pattern->pulses >= fw.wlan.pattern_index) { + fw.wlan.pattern_index = 0; + } + + if (pattern->pulses > fw.wlan.pattern_index) { + const struct pattern_pulse_info *ppi = &pattern->pattern[fw.wlan.pattern_index]; + if (is_after_usecs(fw.wlan.pattern_last, ppi->pulse_interval)) { + fw.wlan.pattern_last = get_clock_counter(); + set(0x1C3BC0, ppi->pulse_pattern); + set(0x1C3BBC, ppi->pulse_mode); + udelay(ppi->pulse_width); + set(0x1C3BBC, 0); + set(0x1C3BC0, 0); + fw.wlan.pattern_index++; + } + } + } +} + +#endif /* CONFIG_CONFIG_CARL9170FW_RADAR */ diff --git a/include/pattern.h b/include/pattern.h new file mode 100644 index 0000000..9f06923 --- /dev/null +++ b/include/pattern.h @@ -0,0 +1,156 @@ +/* + * carl9170 firmware - used by the ar9170 wireless device + * + * Pattern pulse definitions + * + * Copyright 2012 Christian Lamparter + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef __CARL9170FW_PATTERN_H +#define __CARL9170FW_PATTERN_H + +#include "types.h" +#include "compiler.h" +#include "fwdesc.h" + +enum PATTERN_TYPE { + NO_PATTERN = 0, + ONE_KHZ, + TEN_KHZ, + + ONE_TWO_KHZ, + + FCC1, + FCC4, + + ETSIFIXED, + + /* keep last */ + __CARL9170FW_NUM_PATTERNS +}; + +struct pattern_pulse_info { + unsigned int pulse_width; + unsigned int pulse_interval; + uint32_t pulse_pattern; + uint32_t pulse_mode; +}; + +struct pattern_info { + unsigned int pulses; + const struct pattern_pulse_info *pattern; +}; + +static const struct pattern_pulse_info pattern_NO_PATTERN[0] = { }; +static const struct pattern_pulse_info pattern_ONE_KHZ[] = { + { + .pulse_width = 1, + .pulse_interval = 1000, + .pulse_pattern = 0xaa55, + .pulse_mode = 0x17f01, + }, +}; + +static const struct pattern_pulse_info pattern_TEN_KHZ[] = { + { + .pulse_width = 1, + .pulse_interval = 100, + .pulse_pattern = 0xaa55, + .pulse_mode = 0x17f01, + }, +}; + +static const struct pattern_pulse_info pattern_ONE_TWO_KHZ[] = { + { + .pulse_width = 1, + .pulse_interval = 1000, + .pulse_pattern = 0xaa55, + .pulse_mode = 0x17f01, + }, + + { + .pulse_width = 10, + .pulse_interval = 500, + .pulse_pattern = 0xaa55, + .pulse_mode = 0x17f01, + }, +}; + +/* + * Data taken from: + * + */ + +/* FCC Test Signal 1 - 1us pulse, 1428 us interval */ +static const struct pattern_pulse_info pattern_FCC1[] = { + { + .pulse_width = 1, + .pulse_interval = 1428, + .pulse_pattern = 0xaa55, + .pulse_mode = 0x17f01, + }, +}; + +/* FCC Test Signal 4 - 11-20us pulse, 200-500 us interval */ +static const struct pattern_pulse_info pattern_FCC4[] = { + { + .pulse_width = 11, + .pulse_interval = 200, + .pulse_pattern = 0xaa55, + .pulse_mode = 0x7f01, + }, +}; + +/* ETSI Test Signal 1 (Fixed) - 1us Pulse, 750 us interval */ +static const struct pattern_pulse_info pattern_ETSIFIXED[] = { + { + .pulse_width = 1, + .pulse_interval = 750, + .pulse_pattern = 0xaa55, + .pulse_mode = 0x7f01, + }, +}; + + +#define ADD_RADAR(name) [name] = { .pulses = ARRAY_SIZE(pattern_## name), .pattern = pattern_## name } + +static const struct pattern_info patterns[__CARL9170FW_NUM_PATTERNS] = { + ADD_RADAR(NO_PATTERN), + ADD_RADAR(ONE_KHZ), + ADD_RADAR(TEN_KHZ), + ADD_RADAR(ONE_TWO_KHZ), + ADD_RADAR(FCC1), + ADD_RADAR(FCC4), + ADD_RADAR(ETSIFIXED), +}; + +#define MAP_ENTRY(idx) [idx] = { .index = idx, .name = # idx , } +#define NAMED_MAP_ENTRY(idx, named) [idx] = {.index = idx, .name = named, } + +static const struct carl9170fw_pattern_map_entry pattern_names[__CARL9170FW_NUM_PATTERNS] = { + MAP_ENTRY(NO_PATTERN), + MAP_ENTRY(ONE_KHZ), + MAP_ENTRY(TEN_KHZ), + MAP_ENTRY(ONE_TWO_KHZ), + + MAP_ENTRY(FCC1), + MAP_ENTRY(FCC4), + + MAP_ENTRY(ETSIFIXED), +}; + +#endif /* __CARL9170FW_PATTERN_H */ diff --git a/include/shared/fwdesc.h b/include/shared/fwdesc.h index da05a4e..d542b01 100644 --- a/include/shared/fwdesc.h +++ b/include/shared/fwdesc.h @@ -98,6 +98,7 @@ enum carl9170fw_feature_list { #define CHK_MAGIC "CHK\0" #define TXSQ_MAGIC "TXSQ" #define WOL_MAGIC "WOL\0" +#define PATTERN_MAGIC "RDR\0" #define LAST_MAGIC "LAST" #define CARL9170FW_SET_DAY(d) (((d) - 1) % 31) @@ -182,6 +183,24 @@ struct carl9170fw_dbg_desc { #define CARL9170FW_DBG_DESC_SIZE \ (sizeof(struct carl9170fw_dbg_desc)) +#define CARL9170FW_PATTERN_MAP_NAME_LEN 15 +struct carl9170fw_pattern_map_entry { + u8 index; + char name[CARL9170FW_PATTERN_MAP_NAME_LEN]; +} __packed; + +#define CARL9170FW_PATTERN_DESC_MIN_VER 1 +#define CARL9170FW_PATTERN_DESC_CUR_VER 1 +struct carl9170fw_pattern_desc { + struct carl9170fw_desc_head head; + + __le32 soft_pattern; + __le32 num_patterns; + struct carl9170fw_pattern_map_entry patterns[0]; +} __packed; +#define CARL9170FW_PATTERN_DESC_SIZE \ + (sizeof(struct carl9170fw_pattern_desc)) + #define CARL9170FW_CHK_DESC_MIN_VER 1 #define CARL9170FW_CHK_DESC_CUR_VER 2 struct carl9170fw_chk_desc { diff --git a/tools/.gitignore b/tools/.gitignore index caffdb0..efb38dd 100644 --- a/tools/.gitignore +++ b/tools/.gitignore @@ -2,5 +2,6 @@ src/checksum src/fwinfo src/fwprepare src/miniboot +src/fwprepare src/wol carlu/carlu diff --git a/tools/src/CMakeLists.txt b/tools/src/CMakeLists.txt index d141521..19ec508 100644 --- a/tools/src/CMakeLists.txt +++ b/tools/src/CMakeLists.txt @@ -4,7 +4,7 @@ project(tools) add_custom_target(wol ALL COMMAND gcc wol.c -o wol) -set(tools fwinfo miniboot checksum) +set(tools fwinfo miniboot checksum fwprepare) foreach(tool ${tools}) add_executable( ${tool} ${tool}.c ) diff --git a/tools/src/fwinfo.c b/tools/src/fwinfo.c index 4270564..cd5466c 100644 --- a/tools/src/fwinfo.c +++ b/tools/src/fwinfo.c @@ -209,6 +209,25 @@ static void show_chk_desc(const struct carl9170fw_desc_head *head, le32_to_cpu(chk->fw_crc32)); } +static void show_pattern_desc(const struct carl9170fw_desc_head *head, + struct carlfw *fw __unused) +{ + const struct carl9170fw_pattern_desc *pattern = (const void *) head; + const struct carl9170fw_pattern_map_entry *map = pattern->patterns; + int map_entries = (head->length - sizeof(*pattern)) / sizeof(*map); + int i; + + fprintf(stdout, "\tPattern index register: %08x\n", + le32_to_cpu(pattern->soft_pattern)); + fprintf(stdout, "\tNumber of supported patterns: %08x\n", + le32_to_cpu(pattern->num_patterns)); + + for (i = 0; i < map_entries; i++) { + fprintf(stdout, "\t\tindex:0x%x, description:%s\n", + map[i].index, map[i].name); + } +} + static void show_last_desc(const struct carl9170fw_desc_head *head, struct carlfw *fw __unused) @@ -239,6 +258,7 @@ static const struct { ADD_HANDLER(FIX, show_fix_desc), ADD_HANDLER(CHK, show_chk_desc), ADD_HANDLER(WOL, show_wol_desc), + ADD_HANDLER(PATTERN, show_pattern_desc), ADD_HANDLER(LAST, show_last_desc), }; diff --git a/tools/src/fwprepare.c b/tools/src/fwprepare.c new file mode 100644 index 0000000..67a00db --- /dev/null +++ b/tools/src/fwprepare.c @@ -0,0 +1,158 @@ +/* + * Copyright 2012 Christian Lamparter + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "carlfw.h" + +#include "compiler.h" +#include "pattern.h" + +static void checksum_help(void) +{ + fprintf(stderr, "Usage:\n"); + fprintf(stderr, "\tfwprepare FW-FILE\n"); + + fprintf(stderr, "\nDescription:\n"); + fprintf(stderr, "\tThis simple utility prepares the firmware " + "for release.\n"); + + fprintf(stderr, "\nParameteres:\n"); + fprintf(stderr, "\t 'FW-FILE' = firmware name\n"); + fprintf(stderr, "\n"); +} + +static int add_patterns(struct carlfw *fw) { + const struct carl9170fw_otus_desc *otus_desc = NULL; + struct carl9170fw_pattern_desc *pattern_desc = NULL; + int to_add; + + otus_desc = carlfw_find_desc(fw, (uint8_t *) OTUS_MAGIC, + sizeof(*otus_desc), + CARL9170FW_OTUS_DESC_CUR_VER); + if (!otus_desc) { + fprintf(stderr, "No OTUS descriptor found\n"); + return -1; + } + + if (!carl9170fw_supports(otus_desc->feature_set, CARL9170FW_PATTERN_GENERATOR)) { + return 0; + } + + pattern_desc = carlfw_find_desc(fw, (uint8_t *) PATTERN_MAGIC, + sizeof(*pattern_desc), + CARL9170FW_PATTERN_DESC_CUR_VER); + + if (!pattern_desc) { + fprintf(stderr, "Firmware has the pattern generator feature set, but " + "can't find a valid pattern descriptor\n"); + return 0; + } + + to_add = pattern_desc->num_patterns - + ((pattern_desc->head.length - sizeof(*pattern_desc)) / + sizeof(struct carl9170fw_pattern_map_entry)); + if (to_add == 0) { + /* been there, done that */ + return 0; + } + + if (to_add == __CARL9170FW_NUM_PATTERNS) { + struct carl9170fw_pattern_desc *tmp; + unsigned int len, map_len; + + map_len = sizeof(struct carl9170fw_pattern_map_entry) * to_add; + len = sizeof(*tmp) + map_len; + tmp = malloc(len); + if (!tmp) + return -ENOMEM; + + pattern_desc = carlfw_desc_mod_len(fw, &pattern_desc->head, map_len); + if (IS_ERR_OR_NULL(pattern_desc)) + return (int) PTR_ERR(pattern_desc); + + memcpy(&pattern_desc->patterns, pattern_names, map_len); + return 0; + } else { + fprintf(stderr, "No idea, what you just did. But congrats: you broke it!"); + return -EINVAL; + } +} + +static int add_checksums(struct carlfw __unused *fw) +{ + /* + * No magic here, The checksum descriptor is added/update + * automatically in a subroutine of carlfw_store(). + */ + return 0; +} + +int main(int argc, char *args[]) +{ + struct carlfw *fw = NULL; + int err = 0; + + if (argc != 2) { + err = -EINVAL; + goto out; + } + + fw = carlfw_load(args[1]); + if (IS_ERR_OR_NULL(fw)) { + err = PTR_ERR(fw); + fprintf(stderr, "Failed to open file \"%s\" (%d).\n", + args[1], err); + goto out; + } + + err = add_patterns(fw); + if (err) + goto out; + + err = add_checksums(fw); + if (err) + goto out; + + err = carlfw_store(fw); + if (err) { + fprintf(stderr, "Failed to apply checksum (%d).\n", err); + goto out; + } + +out: + switch (err) { + case 0: + fprintf(stdout, "firmware was prepared successfully.\n"); + break; + case -EINVAL: + checksum_help(); + break; + default: + break; + } + + carlfw_release(fw); + return err ? EXIT_FAILURE : EXIT_SUCCESS; +} -- 2.31.1