X-Git-Url: https://git.librecmc.org/?p=oweals%2Fu-boot.git;a=blobdiff_plain;f=common%2Fautoboot.c;h=6d78716a266a0e766b523954257c27591225cd68;hp=c11fb3123615b5834837854dd60ce2c1c32b206c;hb=1099b2abef35c3c887f6afac1a8ef18c7924d5d2;hpb=24b852a7a2b8eca71789100983bdb5104cc00696 diff --git a/common/autoboot.c b/common/autoboot.c index c11fb31236..6d78716a26 100644 --- a/common/autoboot.c +++ b/common/autoboot.c @@ -1,19 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2000 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * SPDX-License-Identifier: GPL-2.0+ */ #include #include #include #include +#include #include +#include #include +#include +#include +#include +#include #include #include +#include +#include #include +#include DECLARE_GLOBAL_DATA_PTR; @@ -27,9 +35,19 @@ DECLARE_GLOBAL_DATA_PTR; /* Stored value of bootdelay, used by autoboot_command() */ static int stored_bootdelay; +static int menukey; -#if defined(CONFIG_AUTOBOOT_KEYED) -#if defined(CONFIG_AUTOBOOT_STOP_STR_SHA256) +#ifdef CONFIG_AUTOBOOT_ENCRYPTION +#define AUTOBOOT_STOP_STR_SHA256 CONFIG_AUTOBOOT_STOP_STR_SHA256 +#else +#define AUTOBOOT_STOP_STR_SHA256 "" +#endif + +#ifdef CONFIG_USE_AUTOBOOT_MENUKEY +#define AUTOBOOT_MENUKEY CONFIG_USE_AUTOBOOT_MENUKEY +#else +#define AUTOBOOT_MENUKEY 0 +#endif /* * Use a "constant-length" time compare function for this @@ -48,20 +66,28 @@ static int slow_equals(u8 *a, u8 *b, int len) return diff == 0; } -static int passwd_abort(uint64_t etime) +/** + * passwd_abort_sha256() - check for a hashed key sequence to abort booting + * + * This checks for the user entering a SHA256 hash within a given time. + * + * @etime: Timeout value ticks (stop when get_ticks() reachs this) + * @return 0 if autoboot should continue, 1 if it should stop + */ +static int passwd_abort_sha256(uint64_t etime) { - const char *sha_env_str = getenv("bootstopkeysha256"); + const char *sha_env_str = env_get("bootstopkeysha256"); u8 sha_env[SHA256_SUM_LEN]; - u8 sha[SHA256_SUM_LEN]; - char presskey[MAX_DELAY_STOP_STR]; + u8 *sha; + char *presskey; const char *algo_name = "sha256"; u_int presskey_len = 0; int abort = 0; - int size; + int size = sizeof(sha); int ret; if (sha_env_str == NULL) - sha_env_str = CONFIG_AUTOBOOT_STOP_STR_SHA256; + sha_env_str = AUTOBOOT_STOP_STR_SHA256; /* * Generate the binary value from the environment hash value @@ -74,6 +100,9 @@ static int passwd_abort(uint64_t etime) return 0; } + presskey = malloc_cache_aligned(MAX_DELAY_STOP_STR); + sha = malloc_cache_aligned(SHA256_SUM_LEN); + size = SHA256_SUM_LEN; /* * We don't know how long the stop-string is, so we need to * generate the sha256 hash upon each input character and @@ -82,8 +111,11 @@ static int passwd_abort(uint64_t etime) do { if (tstc()) { /* Check for input string overflow */ - if (presskey_len >= MAX_DELAY_STOP_STR) + if (presskey_len >= MAX_DELAY_STOP_STR) { + free(presskey); + free(sha); return 0; + } presskey[presskey_len++] = getc(); @@ -97,10 +129,20 @@ static int passwd_abort(uint64_t etime) } } while (!abort && get_ticks() <= etime); + free(presskey); + free(sha); return abort; } -#else -static int passwd_abort(uint64_t etime) + +/** + * passwd_abort_key() - check for a key sequence to aborted booting + * + * This checks for the user entering a string within a given time. + * + * @etime: Timeout value ticks (stop when get_ticks() reachs this) + * @return 0 if autoboot should continue, 1 if it should stop + */ +static int passwd_abort_key(uint64_t etime) { int abort = 0; struct { @@ -109,8 +151,8 @@ static int passwd_abort(uint64_t etime) int retry; } delaykey[] = { - { .str = getenv("bootdelaykey"), .retry = 1 }, - { .str = getenv("bootstopkey"), .retry = 0 }, + { .str = env_get("bootdelaykey"), .retry = 1 }, + { .str = env_get("bootstopkey"), .retry = 0 }, }; char presskey[MAX_DELAY_STOP_STR]; @@ -176,22 +218,16 @@ static int passwd_abort(uint64_t etime) return abort; } -#endif /*************************************************************************** * Watch for 'delay' seconds for autoboot stop or autoboot delay string. * returns: 0 - no key string, allow autoboot 1 - got key string, abort */ -static int abortboot_keyed(int bootdelay) +static int abortboot_key_sequence(int bootdelay) { int abort; uint64_t etime = endtick(bootdelay); -#ifndef CONFIG_ZERO_BOOTDELAY_CHECK - if (bootdelay == 0) - return 0; -#endif - # ifdef CONFIG_AUTOBOOT_PROMPT /* * CONFIG_AUTOBOOT_PROMPT includes the %d for all boards. @@ -200,49 +236,31 @@ static int abortboot_keyed(int bootdelay) printf(CONFIG_AUTOBOOT_PROMPT, bootdelay); # endif - abort = passwd_abort(etime); + if (IS_ENABLED(CONFIG_AUTOBOOT_ENCRYPTION)) + abort = passwd_abort_sha256(etime); + else + abort = passwd_abort_key(etime); if (!abort) debug_bootkeys("key timeout\n"); -#ifdef CONFIG_SILENT_CONSOLE - if (abort) - gd->flags &= ~GD_FLG_SILENT; -#endif - return abort; } -# else /* !defined(CONFIG_AUTOBOOT_KEYED) */ - -#ifdef CONFIG_MENUKEY -static int menukey; -#endif - -static int abortboot_normal(int bootdelay) +static int abortboot_single_key(int bootdelay) { int abort = 0; unsigned long ts; -#ifdef CONFIG_MENUPROMPT - printf(CONFIG_MENUPROMPT); -#else - if (bootdelay >= 0) - printf("Hit any key to stop autoboot: %2d ", bootdelay); -#endif + printf("Hit any key to stop autoboot: %2d ", bootdelay); -#if defined CONFIG_ZERO_BOOTDELAY_CHECK /* * Check if key already pressed - * Don't check if bootdelay < 0 */ - if (bootdelay >= 0) { - if (tstc()) { /* we got a key press */ - (void) getc(); /* consume input */ - puts("\b\b\b 0"); - abort = 1; /* don't auto boot */ - } + if (tstc()) { /* we got a key press */ + (void) getc(); /* consume input */ + puts("\b\b\b 0"); + abort = 1; /* don't auto boot */ } -#endif while ((bootdelay > 0) && (!abort)) { --bootdelay; @@ -250,13 +268,13 @@ static int abortboot_normal(int bootdelay) ts = get_timer(0); do { if (tstc()) { /* we got a key press */ + int key; + abort = 1; /* don't auto boot */ bootdelay = 0; /* no more delay */ -# ifdef CONFIG_MENUKEY - menukey = getc(); -# else - (void) getc(); /* consume input */ -# endif + key = getc(); /* consume input */ + if (IS_ENABLED(CONFIG_USE_AUTOBOOT_MENUKEY)) + menukey = key; break; } udelay(10000); @@ -267,88 +285,75 @@ static int abortboot_normal(int bootdelay) putc('\n'); -#ifdef CONFIG_SILENT_CONSOLE - if (abort) - gd->flags &= ~GD_FLG_SILENT; -#endif - return abort; } -# endif /* CONFIG_AUTOBOOT_KEYED */ static int abortboot(int bootdelay) { -#ifdef CONFIG_AUTOBOOT_KEYED - return abortboot_keyed(bootdelay); -#else - return abortboot_normal(bootdelay); -#endif + int abort = 0; + + if (bootdelay >= 0) { + if (IS_ENABLED(CONFIG_AUTOBOOT_KEYED)) + abort = abortboot_key_sequence(bootdelay); + else + abort = abortboot_single_key(bootdelay); + } + + if (IS_ENABLED(CONFIG_SILENT_CONSOLE) && abort) + gd->flags &= ~GD_FLG_SILENT; + + return abort; } static void process_fdt_options(const void *blob) { -#if defined(CONFIG_OF_CONTROL) +#ifdef CONFIG_SYS_TEXT_BASE ulong addr; /* Add an env variable to point to a kernel payload, if available */ addr = fdtdec_get_config_int(gd->fdt_blob, "kernel-offset", 0); if (addr) - setenv_addr("kernaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); + env_set_addr("kernaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); /* Add an env variable to point to a root disk, if available */ addr = fdtdec_get_config_int(gd->fdt_blob, "rootdisk-offset", 0); if (addr) - setenv_addr("rootaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); -#endif /* CONFIG_OF_CONTROL */ + env_set_addr("rootaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); +#endif /* CONFIG_SYS_TEXT_BASE */ } const char *bootdelay_process(void) { char *s; int bootdelay; -#ifdef CONFIG_BOOTCOUNT_LIMIT - unsigned long bootcount = 0; - unsigned long bootlimit = 0; -#endif /* CONFIG_BOOTCOUNT_LIMIT */ - -#ifdef CONFIG_BOOTCOUNT_LIMIT - bootcount = bootcount_load(); - bootcount++; - bootcount_store(bootcount); - setenv_ulong("bootcount", bootcount); - bootlimit = getenv_ulong("bootlimit", 10, 0); -#endif /* CONFIG_BOOTCOUNT_LIMIT */ - - s = getenv("bootdelay"); + + bootcount_inc(); + + s = env_get("bootdelay"); bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; -#ifdef CONFIG_OF_CONTROL - bootdelay = fdtdec_get_config_int(gd->fdt_blob, "bootdelay", - bootdelay); -#endif + if (IS_ENABLED(CONFIG_OF_CONTROL)) + bootdelay = fdtdec_get_config_int(gd->fdt_blob, "bootdelay", + bootdelay); debug("### main_loop entered: bootdelay=%d\n\n", bootdelay); -#if defined(CONFIG_MENU_SHOW) - bootdelay = menu_show(bootdelay); -#endif + if (IS_ENABLED(CONFIG_AUTOBOOT_MENU_SHOW)) + bootdelay = menu_show(bootdelay); bootretry_init_cmd_timeout(); #ifdef CONFIG_POST if (gd->flags & GD_FLG_POSTFAIL) { - s = getenv("failbootcmd"); + s = env_get("failbootcmd"); } else #endif /* CONFIG_POST */ -#ifdef CONFIG_BOOTCOUNT_LIMIT - if (bootlimit && (bootcount > bootlimit)) { - printf("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n", - (unsigned)bootlimit); - s = getenv("altbootcmd"); - } else -#endif /* CONFIG_BOOTCOUNT_LIMIT */ - s = getenv("bootcmd"); + if (bootcount_error()) + s = env_get("altbootcmd"); + else + s = env_get("bootcmd"); - process_fdt_options(gd->fdt_blob); + if (IS_ENABLED(CONFIG_OF_CONTROL)) + process_fdt_options(gd->fdt_blob); stored_bootdelay = bootdelay; return s; @@ -359,22 +364,24 @@ void autoboot_command(const char *s) debug("### main_loop: bootcmd=\"%s\"\n", s ? s : ""); if (stored_bootdelay != -1 && s && !abortboot(stored_bootdelay)) { -#if defined(CONFIG_AUTOBOOT_KEYED) && !defined(CONFIG_AUTOBOOT_KEYED_CTRLC) - int prev = disable_ctrlc(1); /* disable Control C checking */ -#endif + bool lock; + int prev; + + lock = IS_ENABLED(CONFIG_AUTOBOOT_KEYED) && + !IS_ENABLED(CONFIG_AUTOBOOT_KEYED_CTRLC); + if (lock) + prev = disable_ctrlc(1); /* disable Ctrl-C checking */ run_command_list(s, -1, 0); -#if defined(CONFIG_AUTOBOOT_KEYED) && !defined(CONFIG_AUTOBOOT_KEYED_CTRLC) - disable_ctrlc(prev); /* restore Control C checking */ -#endif + if (lock) + disable_ctrlc(prev); /* restore Ctrl-C checking */ } -#ifdef CONFIG_MENUKEY - if (menukey == CONFIG_MENUKEY) { - s = getenv("menucmd"); + if (IS_ENABLED(CONFIG_USE_AUTOBOOT_MENUKEY) && + menukey == AUTOBOOT_MENUKEY) { + s = env_get("menucmd"); if (s) run_command_list(s, -1, 0); } -#endif /* CONFIG_MENUKEY */ }