arch/sandbox/cpu/start.c

   1 /*
   2  * Copyright (c) 2011-2012 The Chromium OS Authors.
   3  * SPDX-License-Identifier:     GPL-2.0+
   4  */
   5
   6 #include <common.h>
   7 #include <os.h>
   8 #include <cli.h>
   9 #include <malloc.h>
  10 #include <asm/getopt.h>
  11 #include <asm/io.h>
  12 #include <asm/sections.h>
  13 #include <asm/state.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 int sandbox_early_getopt_check(void)
  18 {
  19         struct sandbox_state *state = state_get_current();
  20         struct sandbox_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
  21         size_t num_options = __u_boot_sandbox_option_count();
  22         size_t i;
  23         int max_arg_len, max_noarg_len;
  24
  25         /* parse_err will be a string of the faulting option */
  26         if (!state->parse_err)
  27                 return 0;
  28
  29         if (strcmp(state->parse_err, "help")) {
  30                 printf("u-boot: error: failed while parsing option: %s\n"
  31                         "\ttry running with --help for more information.\n",
  32                         state->parse_err);
  33                 os_exit(1);
  34         }
  35
  36         printf(
  37                 "u-boot, a command line test interface to U-Boot\n\n"
  38                 "Usage: u-boot [options]\n"
  39                 "Options:\n");
  40
  41         max_arg_len = 0;
  42         for (i = 0; i < num_options; ++i)
  43                 max_arg_len = max((int)strlen(sb_opt[i]->flag), max_arg_len);
  44         max_noarg_len = max_arg_len + 7;
  45
  46         for (i = 0; i < num_options; ++i) {
  47                 struct sandbox_cmdline_option *opt = sb_opt[i];
  48
  49                 /* first output the short flag if it has one */
  50                 if (opt->flag_short >= 0x100)
  51                         printf("      ");
  52                 else
  53                         printf("  -%c, ", opt->flag_short);
  54
  55                 /* then the long flag */
  56                 if (opt->has_arg)
  57                         printf("--%-*s <arg> ", max_arg_len, opt->flag);
  58                 else
  59                         printf("--%-*s", max_noarg_len, opt->flag);
  60
  61                 /* finally the help text */
  62                 printf("  %s\n", opt->help);
  63         }
  64
  65         os_exit(0);
  66 }
  67
  68 static int sandbox_cmdline_cb_help(struct sandbox_state *state, const char *arg)
  69 {
  70         /* just flag to sandbox_early_getopt_check to show usage */
  71         return 1;
  72 }
  73 SANDBOX_CMDLINE_OPT_SHORT(help, 'h', 0, "Display help");
  74
  75 int sandbox_main_loop_init(void)
  76 {
  77         struct sandbox_state *state = state_get_current();
  78
  79         /* Execute command if required */
  80         if (state->cmd) {
  81                 cli_init();
  82
  83                 run_command_list(state->cmd, -1, 0);
  84                 if (!state->interactive)
  85                         os_exit(state->exit_type);
  86         }
  87
  88         return 0;
  89 }
  90
  91 static int sandbox_cmdline_cb_command(struct sandbox_state *state,
  92                                       const char *arg)
  93 {
  94         state->cmd = arg;
  95         return 0;
  96 }
  97 SANDBOX_CMDLINE_OPT_SHORT(command, 'c', 1, "Execute U-Boot command");
  98
  99 static int sandbox_cmdline_cb_fdt(struct sandbox_state *state, const char *arg)
 100 {
 101         state->fdt_fname = arg;
 102         return 0;
 103 }
 104 SANDBOX_CMDLINE_OPT_SHORT(fdt, 'd', 1, "Specify U-Boot's control FDT");
 105
 106 static int sandbox_cmdline_cb_default_fdt(struct sandbox_state *state,
 107                                           const char *arg)
 108 {
 109         const char *fmt = "%s.dtb";
 110         char *fname;
 111         int len;
 112
 113         len = strlen(state->argv[0]) + strlen(fmt) + 1;
 114         fname = os_malloc(len);
 115         if (!fname)
 116                 return -ENOMEM;
 117         snprintf(fname, len, fmt, state->argv[0]);
 118         state->fdt_fname = fname;
 119
 120         return 0;
 121 }
 122 SANDBOX_CMDLINE_OPT_SHORT(default_fdt, 'D', 0,
 123                 "Use the default u-boot.dtb control FDT in U-Boot directory");
 124
 125 static int sandbox_cmdline_cb_interactive(struct sandbox_state *state,
 126                                           const char *arg)
 127 {
 128         state->interactive = true;
 129         return 0;
 130 }
 131
 132 SANDBOX_CMDLINE_OPT_SHORT(interactive, 'i', 0, "Enter interactive mode");
 133
 134 static int sandbox_cmdline_cb_jump(struct sandbox_state *state,
 135                                    const char *arg)
 136 {
 137         /* Remember to delete this U-Boot image later */
 138         state->jumped_fname = arg;
 139
 140         return 0;
 141 }
 142 SANDBOX_CMDLINE_OPT_SHORT(jump, 'j', 1, "Jumped from previous U-Boot");
 143
 144 static int sandbox_cmdline_cb_memory(struct sandbox_state *state,
 145                                      const char *arg)
 146 {
 147         int err;
 148
 149         /* For now assume we always want to write it */
 150         state->write_ram_buf = true;
 151         state->ram_buf_fname = arg;
 152
 153         err = os_read_ram_buf(arg);
 154         if (err) {
 155                 printf("Failed to read RAM buffer\n");
 156                 return err;
 157         }
 158
 159         return 0;
 160 }
 161 SANDBOX_CMDLINE_OPT_SHORT(memory, 'm', 1,
 162                           "Read/write ram_buf memory contents from file");
 163
 164 static int sandbox_cmdline_cb_rm_memory(struct sandbox_state *state,
 165                                         const char *arg)
 166 {
 167         state->ram_buf_rm = true;
 168
 169         return 0;
 170 }
 171 SANDBOX_CMDLINE_OPT(rm_memory, 0, "Remove memory file after reading");
 172
 173 static int sandbox_cmdline_cb_state(struct sandbox_state *state,
 174                                     const char *arg)
 175 {
 176         state->state_fname = arg;
 177         return 0;
 178 }
 179 SANDBOX_CMDLINE_OPT_SHORT(state, 's', 1, "Specify the sandbox state FDT");
 180
 181 static int sandbox_cmdline_cb_read(struct sandbox_state *state,
 182                                    const char *arg)
 183 {
 184         state->read_state = true;
 185         return 0;
 186 }
 187 SANDBOX_CMDLINE_OPT_SHORT(read, 'r', 0, "Read the state FDT on startup");
 188
 189 static int sandbox_cmdline_cb_write(struct sandbox_state *state,
 190                                     const char *arg)
 191 {
 192         state->write_state = true;
 193         return 0;
 194 }
 195 SANDBOX_CMDLINE_OPT_SHORT(write, 'w', 0, "Write state FDT on exit");
 196
 197 static int sandbox_cmdline_cb_ignore_missing(struct sandbox_state *state,
 198                                              const char *arg)
 199 {
 200         state->ignore_missing_state_on_read = true;
 201         return 0;
 202 }
 203 SANDBOX_CMDLINE_OPT_SHORT(ignore_missing, 'n', 0,
 204                           "Ignore missing state on read");
 205
 206 static int sandbox_cmdline_cb_show_lcd(struct sandbox_state *state,
 207                                        const char *arg)
 208 {
 209         state->show_lcd = true;
 210         return 0;
 211 }
 212 SANDBOX_CMDLINE_OPT_SHORT(show_lcd, 'l', 0,
 213                           "Show the sandbox LCD display");
 214
 215 static const char *term_args[STATE_TERM_COUNT] = {
 216         "raw-with-sigs",
 217         "raw",
 218         "cooked",
 219 };
 220
 221 static int sandbox_cmdline_cb_terminal(struct sandbox_state *state,
 222                                        const char *arg)
 223 {
 224         int i;
 225
 226         for (i = 0; i < STATE_TERM_COUNT; i++) {
 227                 if (!strcmp(arg, term_args[i])) {
 228                         state->term_raw = i;
 229                         return 0;
 230                 }
 231         }
 232
 233         printf("Unknown terminal setting '%s' (", arg);
 234         for (i = 0; i < STATE_TERM_COUNT; i++)
 235                 printf("%s%s", i ? ", " : "", term_args[i]);
 236         puts(")\n");
 237
 238         return 1;
 239 }
 240 SANDBOX_CMDLINE_OPT_SHORT(terminal, 't', 1,
 241                           "Set terminal to raw/cooked mode");
 242
 243 int main(int argc, char *argv[])
 244 {
 245         struct sandbox_state *state;
 246         gd_t data;
 247         int ret;
 248
 249         ret = state_init();
 250         if (ret)
 251                 goto err;
 252
 253         state = state_get_current();
 254         if (os_parse_args(state, argc, argv))
 255                 return 1;
 256
 257         ret = sandbox_read_state(state, state->state_fname);
 258         if (ret)
 259                 goto err;
 260
 261         /* Remove old memory file if required */
 262         if (state->ram_buf_rm && state->ram_buf_fname)
 263                 os_unlink(state->ram_buf_fname);
 264
 265         memset(&data, '\0', sizeof(data));
 266         gd = &data;
 267 #ifdef CONFIG_SYS_MALLOC_F_LEN
 268         gd->malloc_base = CONFIG_MALLOC_F_ADDR;
 269 #endif
 270
 271         /* Do pre- and post-relocation init */
 272         board_init_f(0);
 273
 274         board_init_r(gd->new_gd, 0);
 275
 276         /* NOTREACHED - board_init_r() does not return */
 277         return 0;
 278
 279 err:
 280         printf("Error %d\n", ret);
 281         return 1;
 282 }