mirror of
https://git.codelinaro.org/clo/qsdk/oss/boot/u-boot-2016.git
synced 2025-12-10 07:44:53 +01:00
f80127f8a7
This change will add stack canary test command in u-boot command list. The stack canary test command format like as : canary <string>. The string must be 10 bytes long. e.g " #canary Helloworldhelloworld". After this command we can see the below print. Stack Canary test start. stack-protector: U-boot stack is corrupted. Resetting CPU ... If stack-protection not enabled and stack overflow occure then we will get the following print. prefetch abort pc : [<4a006f72>] lr : [<4a90faf0>] reloc pc : [<4a006f72>] lr : [<4a90faf0>] sp : 4a77f948 ip : 20f14495 fp : 4a90fab4 r10: 00000002 r9 : 4a77fea0 r8 : 00000000 r7 : 4a983d20 r6 : 6f6f6f6f r5 : 6f6f6f6f r4 : 6f6f6f6f r3 : 00000000 r2 : 4a77f946 r1 : 4a78233b r0 : 00000000 Flags: nZCv IRQs off FIQs off Mode SVC_32 Resetting CPU ... Change-Id: If36d1da3ecc1d0038cd1a6bad6ab3d265b47dac8 Signed-off-by: Md Sadre Alam <mdalam@codeaurora.org>
82 lines
1.6 KiB
C
82 lines
1.6 KiB
C
/*
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* (C) Copyright 2000-2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*
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* Misc boot support
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*/
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#include <common.h>
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#include <command.h>
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#include <net.h>
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#ifdef CONFIG_CMD_GO
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/* Allow ports to override the default behavior */
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__attribute__((weak))
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unsigned long do_go_exec(ulong (*entry)(int, char * const []), int argc,
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char * const argv[])
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{
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return entry (argc, argv);
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}
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static int do_go(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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ulong addr, rc;
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int rcode = 0;
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if (argc < 2)
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return CMD_RET_USAGE;
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addr = simple_strtoul(argv[1], NULL, 16);
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printf ("## Starting application at 0x%08lX ...\n", addr);
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/*
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* pass address parameter as argv[0] (aka command name),
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* and all remaining args
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*/
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rc = do_go_exec ((void *)addr, argc - 1, argv + 1);
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if (rc != 0) rcode = 1;
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printf ("## Application terminated, rc = 0x%lX\n", rc);
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return rcode;
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}
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static int do_canary(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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char Buffer[10] = {'\0'};
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printf("Stack Canary test start.\n");
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if (argc < 2 || argc > 2)
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return CMD_RET_USAGE;
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strlcpy(Buffer, argv[1], strlen(argv[1]));
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return 0;
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}
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U_BOOT_CMD(
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canary, 2, 0, do_canary,
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"test stack canary",
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"\n canary HelloworldHelloWorld \n"
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);
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/* -------------------------------------------------------------------- */
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U_BOOT_CMD(
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go, CONFIG_SYS_MAXARGS, 1, do_go,
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"start application at address 'addr'",
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"addr [arg ...]\n - start application at address 'addr'\n"
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" passing 'arg' as arguments"
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);
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#endif
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U_BOOT_CMD(
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reset, 1, 0, do_reset,
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"Perform RESET of the CPU",
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""
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);
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