mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 02:38:56 +00:00
b46f30a378
Add a handler for SIGILL, SIGBUS, SIGSEGV. When an exception occurs print the program counter and the loaded UEFI binaries and reset the system if CONFIG_SANDBOX_CRASH_RESET=y or exit to the OS otherwise. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
483 lines
11 KiB
C
483 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2011-2012 The Chromium OS Authors.
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*/
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#include <common.h>
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#include <command.h>
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#include <dm/root.h>
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#include <errno.h>
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#include <init.h>
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#include <os.h>
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#include <cli.h>
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#include <sort.h>
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#include <asm/getopt.h>
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#include <asm/io.h>
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#include <asm/malloc.h>
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#include <asm/sections.h>
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#include <asm/state.h>
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#include <linux/ctype.h>
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DECLARE_GLOBAL_DATA_PTR;
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static char **os_argv;
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/* Compare two options so that they can be sorted into alphabetical order */
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static int h_compare_opt(const void *p1, const void *p2)
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{
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const struct sandbox_cmdline_option *opt1 = p1;
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const struct sandbox_cmdline_option *opt2 = p2;
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const char *str1, *str2;
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char flag1[2], flag2[2];
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opt1 = *(struct sandbox_cmdline_option **)p1;
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opt2 = *(struct sandbox_cmdline_option **)p2;
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flag1[1] = '\0';
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flag2[1] = '\0';
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*flag1 = opt1->flag_short < 0x100 ? opt1->flag_short : '\0';
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*flag2 = opt2->flag_short < 0x100 ? opt2->flag_short : '\0';
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str1 = *flag1 ? flag1 : opt1->flag;
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str2 = *flag2 ? flag2 : opt2->flag;
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/*
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* Force lower-case flags to come before upper-case ones. We only
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* support upper-case for short flags.
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*/
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if (isalpha(*str1) && isalpha(*str2) &&
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tolower(*str1) == tolower(*str2))
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return isupper(*str1) - isupper(*str2);
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return strcasecmp(str1, str2);
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}
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int sandbox_early_getopt_check(void)
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{
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struct sandbox_state *state = state_get_current();
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struct sandbox_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
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size_t num_options = __u_boot_sandbox_option_count();
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size_t i;
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int max_arg_len, max_noarg_len;
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struct sandbox_cmdline_option **sorted_opt;
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int size;
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/* parse_err will be a string of the faulting option */
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if (!state->parse_err)
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return 0;
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if (strcmp(state->parse_err, "help")) {
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printf("u-boot: error: failed while parsing option: %s\n"
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"\ttry running with --help for more information.\n",
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state->parse_err);
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os_exit(1);
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}
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printf(
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"u-boot, a command line test interface to U-Boot\n\n"
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"Usage: u-boot [options]\n"
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"Options:\n");
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max_arg_len = 0;
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for (i = 0; i < num_options; ++i)
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max_arg_len = max((int)strlen(sb_opt[i]->flag), max_arg_len);
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max_noarg_len = max_arg_len + 7;
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/* Sort the options */
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size = sizeof(*sorted_opt) * num_options;
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sorted_opt = malloc(size);
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if (!sorted_opt) {
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printf("No memory to sort options\n");
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os_exit(1);
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}
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memcpy(sorted_opt, sb_opt, size);
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qsort(sorted_opt, num_options, sizeof(*sorted_opt), h_compare_opt);
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for (i = 0; i < num_options; ++i) {
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struct sandbox_cmdline_option *opt = sorted_opt[i];
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/* first output the short flag if it has one */
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if (opt->flag_short >= 0x100)
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printf(" ");
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else
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printf(" -%c, ", opt->flag_short);
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/* then the long flag */
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if (opt->has_arg)
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printf("--%-*s <arg> ", max_arg_len, opt->flag);
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else
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printf("--%-*s", max_noarg_len, opt->flag);
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/* finally the help text */
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printf(" %s\n", opt->help);
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}
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os_exit(0);
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}
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int misc_init_f(void)
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{
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return sandbox_early_getopt_check();
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}
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static int sandbox_cmdline_cb_help(struct sandbox_state *state, const char *arg)
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{
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/* just flag to sandbox_early_getopt_check to show usage */
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return 1;
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}
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SANDBOX_CMDLINE_OPT_SHORT(help, 'h', 0, "Display help");
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#ifndef CONFIG_SPL_BUILD
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int sandbox_main_loop_init(void)
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{
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struct sandbox_state *state = state_get_current();
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/* Execute command if required */
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if (state->cmd || state->run_distro_boot) {
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int retval = 0;
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cli_init();
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#ifdef CONFIG_CMDLINE
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if (state->cmd)
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retval = run_command_list(state->cmd, -1, 0);
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if (state->run_distro_boot)
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retval = cli_simple_run_command("run distro_bootcmd",
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0);
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#endif
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if (!state->interactive)
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os_exit(retval);
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}
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return 0;
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}
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#endif
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static int sandbox_cmdline_cb_boot(struct sandbox_state *state,
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const char *arg)
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{
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state->run_distro_boot = true;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(boot, 'b', 0, "Run distro boot commands");
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static int sandbox_cmdline_cb_command(struct sandbox_state *state,
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const char *arg)
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{
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state->cmd = arg;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(command, 'c', 1, "Execute U-Boot command");
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static int sandbox_cmdline_cb_fdt(struct sandbox_state *state, const char *arg)
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{
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state->fdt_fname = arg;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(fdt, 'd', 1, "Specify U-Boot's control FDT");
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static int sandbox_cmdline_cb_default_fdt(struct sandbox_state *state,
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const char *arg)
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{
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const char *fmt = "%s.dtb";
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char *fname;
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int len;
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len = strlen(state->argv[0]) + strlen(fmt) + 1;
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fname = malloc(len);
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if (!fname)
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return -ENOMEM;
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snprintf(fname, len, fmt, state->argv[0]);
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state->fdt_fname = fname;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(default_fdt, 'D', 0,
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"Use the default u-boot.dtb control FDT in U-Boot directory");
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static int sandbox_cmdline_cb_test_fdt(struct sandbox_state *state,
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const char *arg)
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{
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const char *fmt = "/arch/sandbox/dts/test.dtb";
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char *p;
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char *fname;
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int len;
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len = strlen(state->argv[0]) + strlen(fmt) + 1;
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fname = malloc(len);
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if (!fname)
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return -ENOMEM;
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strcpy(fname, state->argv[0]);
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p = strrchr(fname, '/');
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if (!p)
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p = fname + strlen(fname);
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len -= p - fname;
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snprintf(p, len, fmt, p);
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state->fdt_fname = fname;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(test_fdt, 'T', 0,
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"Use the test.dtb control FDT in U-Boot directory");
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static int sandbox_cmdline_cb_interactive(struct sandbox_state *state,
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const char *arg)
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{
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state->interactive = true;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(interactive, 'i', 0, "Enter interactive mode");
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static int sandbox_cmdline_cb_jump(struct sandbox_state *state,
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const char *arg)
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{
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/* Remember to delete this U-Boot image later */
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state->jumped_fname = arg;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(jump, 'j', 1, "Jumped from previous U-Boot");
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static int sandbox_cmdline_cb_memory(struct sandbox_state *state,
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const char *arg)
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{
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int err;
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/* For now assume we always want to write it */
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state->write_ram_buf = true;
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state->ram_buf_fname = arg;
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err = os_read_ram_buf(arg);
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if (err) {
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printf("Failed to read RAM buffer '%s': %d\n", arg, err);
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return err;
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}
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state->ram_buf_read = true;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(memory, 'm', 1,
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"Read/write ram_buf memory contents from file");
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static int sandbox_cmdline_cb_rm_memory(struct sandbox_state *state,
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const char *arg)
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{
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state->ram_buf_rm = true;
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return 0;
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}
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SANDBOX_CMDLINE_OPT(rm_memory, 0, "Remove memory file after reading");
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static int sandbox_cmdline_cb_state(struct sandbox_state *state,
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const char *arg)
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{
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state->state_fname = arg;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(state, 's', 1, "Specify the sandbox state FDT");
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static int sandbox_cmdline_cb_read(struct sandbox_state *state,
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const char *arg)
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{
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state->read_state = true;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(read, 'r', 0, "Read the state FDT on startup");
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static int sandbox_cmdline_cb_write(struct sandbox_state *state,
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const char *arg)
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{
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state->write_state = true;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(write, 'w', 0, "Write state FDT on exit");
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static int sandbox_cmdline_cb_ignore_missing(struct sandbox_state *state,
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const char *arg)
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{
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state->ignore_missing_state_on_read = true;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(ignore_missing, 'n', 0,
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"Ignore missing state on read");
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static int sandbox_cmdline_cb_show_lcd(struct sandbox_state *state,
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const char *arg)
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{
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state->show_lcd = true;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(show_lcd, 'l', 0,
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"Show the sandbox LCD display");
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static int sandbox_cmdline_cb_double_lcd(struct sandbox_state *state,
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const char *arg)
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{
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state->double_lcd = true;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(double_lcd, 'K', 0,
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"Double the LCD display size in each direction");
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static const char *term_args[STATE_TERM_COUNT] = {
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"raw-with-sigs",
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"raw",
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"cooked",
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};
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static int sandbox_cmdline_cb_terminal(struct sandbox_state *state,
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const char *arg)
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{
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int i;
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for (i = 0; i < STATE_TERM_COUNT; i++) {
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if (!strcmp(arg, term_args[i])) {
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state->term_raw = i;
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return 0;
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}
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}
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printf("Unknown terminal setting '%s' (", arg);
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for (i = 0; i < STATE_TERM_COUNT; i++)
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printf("%s%s", i ? ", " : "", term_args[i]);
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puts(")\n");
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return 1;
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}
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SANDBOX_CMDLINE_OPT_SHORT(terminal, 't', 1,
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"Set terminal to raw/cooked mode");
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static int sandbox_cmdline_cb_verbose(struct sandbox_state *state,
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const char *arg)
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{
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state->show_test_output = true;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(verbose, 'v', 0, "Show test output");
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static int sandbox_cmdline_cb_log_level(struct sandbox_state *state,
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const char *arg)
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{
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state->default_log_level = simple_strtol(arg, NULL, 10);
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(log_level, 'L', 1,
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"Set log level (0=panic, 7=debug)");
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static int sandbox_cmdline_cb_unittests(struct sandbox_state *state,
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const char *arg)
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{
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state->run_unittests = true;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(unittests, 'u', 0, "Run unit tests");
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static int sandbox_cmdline_cb_select_unittests(struct sandbox_state *state,
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const char *arg)
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{
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state->select_unittests = arg;
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return 0;
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}
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SANDBOX_CMDLINE_OPT_SHORT(select_unittests, 'k', 1, "Select unit tests to run");
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static void setup_ram_buf(struct sandbox_state *state)
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{
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/* Zero the RAM buffer if we didn't read it, to keep valgrind happy */
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if (!state->ram_buf_read)
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memset(state->ram_buf, '\0', state->ram_size);
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gd->arch.ram_buf = state->ram_buf;
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gd->ram_size = state->ram_size;
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}
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void state_show(struct sandbox_state *state)
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{
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char **p;
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printf("Arguments:\n");
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for (p = state->argv; *p; p++)
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printf("%s ", *p);
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printf("\n");
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}
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void sandbox_reset(void)
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{
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/* Do this here while it still has an effect */
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os_fd_restore();
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if (state_uninit())
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os_exit(2);
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if (dm_uninit())
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os_exit(2);
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/* Restart U-Boot */
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os_relaunch(os_argv);
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}
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int main(int argc, char *argv[])
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{
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struct sandbox_state *state;
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gd_t data;
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int ret;
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/*
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* Copy argv[] so that we can pass the arguments in the original
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* sequence when resetting the sandbox.
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*/
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os_argv = calloc(argc + 1, sizeof(char *));
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if (!os_argv)
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os_exit(1);
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memcpy(os_argv, argv, sizeof(char *) * (argc + 1));
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memset(&data, '\0', sizeof(data));
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gd = &data;
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gd->arch.text_base = os_find_text_base();
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ret = state_init();
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if (ret)
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goto err;
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state = state_get_current();
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if (os_parse_args(state, argc, argv))
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return 1;
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ret = sandbox_read_state(state, state->state_fname);
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if (ret)
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goto err;
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ret = os_setup_signal_handlers();
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if (ret)
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goto err;
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#if CONFIG_VAL(SYS_MALLOC_F_LEN)
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gd->malloc_base = CONFIG_MALLOC_F_ADDR;
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#endif
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#if CONFIG_IS_ENABLED(LOG)
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gd->default_log_level = state->default_log_level;
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#endif
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setup_ram_buf(state);
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/*
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* Set up the relocation offset here, since sandbox symbols are always
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* relocated by the OS before sandbox is entered.
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*/
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gd->reloc_off = (ulong)gd->arch.text_base;
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/* Do pre- and post-relocation init */
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board_init_f(0);
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board_init_r(gd->new_gd, 0);
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/* NOTREACHED - board_init_r() does not return */
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return 0;
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err:
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printf("Error %d\n", ret);
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return 1;
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}
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