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 <errno.h>
   8 #include <os.h>
   9 #include <cli.h>
  10 #include <malloc.h>
  11 #include <asm/getopt.h>
  12 #include <asm/io.h>
  13 #include <asm/sections.h>
  14 #include <asm/state.h>
  15
  16 DECLARE_GLOBAL_DATA_PTR;
  17
  18 int sandbox_early_getopt_check(void)
  19 {
  20         struct sandbox_state *state = state_get_current();
  21         struct sandbox_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
  22         size_t num_options = __u_boot_sandbox_option_count();
  23         size_t i;
  24         int max_arg_len, max_noarg_len;
  25
  26         /* parse_err will be a string of the faulting option */
  27         if (!state->parse_err)
  28                 return 0;
  29
  30         if (strcmp(state->parse_err, "help")) {
  31                 printf("u-boot: error: failed while parsing option: %s\n"
  32                         "\ttry running with --help for more information.\n",
  33                         state->parse_err);
  34                 os_exit(1);
  35         }
  36
  37         printf(
  38                 "u-boot, a command line test interface to U-Boot\n\n"
  39                 "Usage: u-boot [options]\n"
  40                 "Options:\n");
  41
  42         max_arg_len = 0;
  43         for (i = 0; i < num_options; ++i)
  44                 max_arg_len = max((int)strlen(sb_opt[i]->flag), max_arg_len);
  45         max_noarg_len = max_arg_len + 7;
  46
  47         for (i = 0; i < num_options; ++i) {
  48                 struct sandbox_cmdline_option *opt = sb_opt[i];
  49
  50                 /* first output the short flag if it has one */
  51                 if (opt->flag_short >= 0x100)
  52                         printf("      ");
  53                 else
  54                         printf("  -%c, ", opt->flag_short);
  55
  56                 /* then the long flag */
  57                 if (opt->has_arg)
  58                         printf("--%-*s <arg> ", max_arg_len, opt->flag);
  59                 else
  60                         printf("--%-*s", max_noarg_len, opt->flag);
  61
  62                 /* finally the help text */
  63                 printf("  %s\n", opt->help);
  64         }
  65
  66         os_exit(0);
  67 }
  68
  69 static int sandbox_cmdline_cb_help(struct sandbox_state *state, const char *arg)
  70 {
  71         /* just flag to sandbox_early_getopt_check to show usage */
  72         return 1;
  73 }
  74 SANDBOX_CMDLINE_OPT_SHORT(help, 'h', 0, "Display help");
  75
  76 int sandbox_main_loop_init(void)
  77 {
  78         struct sandbox_state *state = state_get_current();
  79
  80         /* Execute command if required */
  81         if (state->cmd || state->run_distro_boot) {
  82                 int retval = 0;
  83
  84                 cli_init();
  85
  86                 if (state->cmd)
  87                         retval = run_command_list(state->cmd, -1, 0);
  88
  89                 if (state->run_distro_boot)
  90                         retval = cli_simple_run_command("run distro_bootcmd",
  91                                                         0);
  92
  93                 if (!state->interactive)
  94                         os_exit(retval);
  95         }
  96
  97         return 0;
  98 }
  99
 100 static int sandbox_cmdline_cb_boot(struct sandbox_state *state,
 101                                       const char *arg)
 102 {
 103         state->run_distro_boot = true;
 104         return 0;
 105 }
 106 SANDBOX_CMDLINE_OPT_SHORT(boot, 'b', 0, "Run distro boot commands");
 107
 108 static int sandbox_cmdline_cb_command(struct sandbox_state *state,
 109                                       const char *arg)
 110 {
 111         state->cmd = arg;
 112         return 0;
 113 }
 114 SANDBOX_CMDLINE_OPT_SHORT(command, 'c', 1, "Execute U-Boot command");
 115
 116 static int sandbox_cmdline_cb_fdt(struct sandbox_state *state, const char *arg)
 117 {
 118         state->fdt_fname = arg;
 119         return 0;
 120 }
 121 SANDBOX_CMDLINE_OPT_SHORT(fdt, 'd', 1, "Specify U-Boot's control FDT");
 122
 123 static int sandbox_cmdline_cb_default_fdt(struct sandbox_state *state,
 124                                           const char *arg)
 125 {
 126         const char *fmt = "%s.dtb";
 127         char *fname;
 128         int len;
 129
 130         len = strlen(state->argv[0]) + strlen(fmt) + 1;
 131         fname = os_malloc(len);
 132         if (!fname)
 133                 return -ENOMEM;
 134         snprintf(fname, len, fmt, state->argv[0]);
 135         state->fdt_fname = fname;
 136
 137         return 0;
 138 }
 139 SANDBOX_CMDLINE_OPT_SHORT(default_fdt, 'D', 0,
 140                 "Use the default u-boot.dtb control FDT in U-Boot directory");
 141
 142 static int sandbox_cmdline_cb_interactive(struct sandbox_state *state,
 143                                           const char *arg)
 144 {
 145         state->interactive = true;
 146         return 0;
 147 }
 148
 149 SANDBOX_CMDLINE_OPT_SHORT(interactive, 'i', 0, "Enter interactive mode");
 150
 151 static int sandbox_cmdline_cb_jump(struct sandbox_state *state,
 152                                    const char *arg)
 153 {
 154         /* Remember to delete this U-Boot image later */
 155         state->jumped_fname = arg;
 156
 157         return 0;
 158 }
 159 SANDBOX_CMDLINE_OPT_SHORT(jump, 'j', 1, "Jumped from previous U-Boot");
 160
 161 static int sandbox_cmdline_cb_memory(struct sandbox_state *state,
 162                                      const char *arg)
 163 {
 164         int err;
 165
 166         /* For now assume we always want to write it */
 167         state->write_ram_buf = true;
 168         state->ram_buf_fname = arg;
 169
 170         err = os_read_ram_buf(arg);
 171         if (err) {
 172                 printf("Failed to read RAM buffer\n");
 173                 return err;
 174         }
 175
 176         return 0;
 177 }
 178 SANDBOX_CMDLINE_OPT_SHORT(memory, 'm', 1,
 179                           "Read/write ram_buf memory contents from file");
 180
 181 static int sandbox_cmdline_cb_rm_memory(struct sandbox_state *state,
 182                                         const char *arg)
 183 {
 184         state->ram_buf_rm = true;
 185
 186         return 0;
 187 }
 188 SANDBOX_CMDLINE_OPT(rm_memory, 0, "Remove memory file after reading");
 189
 190 static int sandbox_cmdline_cb_state(struct sandbox_state *state,
 191                                     const char *arg)
 192 {
 193         state->state_fname = arg;
 194         return 0;
 195 }
 196 SANDBOX_CMDLINE_OPT_SHORT(state, 's', 1, "Specify the sandbox state FDT");
 197
 198 static int sandbox_cmdline_cb_read(struct sandbox_state *state,
 199                                    const char *arg)
 200 {
 201         state->read_state = true;
 202         return 0;
 203 }
 204 SANDBOX_CMDLINE_OPT_SHORT(read, 'r', 0, "Read the state FDT on startup");
 205
 206 static int sandbox_cmdline_cb_write(struct sandbox_state *state,
 207                                     const char *arg)
 208 {
 209         state->write_state = true;
 210         return 0;
 211 }
 212 SANDBOX_CMDLINE_OPT_SHORT(write, 'w', 0, "Write state FDT on exit");
 213
 214 static int sandbox_cmdline_cb_ignore_missing(struct sandbox_state *state,
 215                                              const char *arg)
 216 {
 217         state->ignore_missing_state_on_read = true;
 218         return 0;
 219 }
 220 SANDBOX_CMDLINE_OPT_SHORT(ignore_missing, 'n', 0,
 221                           "Ignore missing state on read");
 222
 223 static int sandbox_cmdline_cb_show_lcd(struct sandbox_state *state,
 224                                        const char *arg)
 225 {
 226         state->show_lcd = true;
 227         return 0;
 228 }
 229 SANDBOX_CMDLINE_OPT_SHORT(show_lcd, 'l', 0,
 230                           "Show the sandbox LCD display");
 231
 232 static const char *term_args[STATE_TERM_COUNT] = {
 233         "raw-with-sigs",
 234         "raw",
 235         "cooked",
 236 };
 237
 238 static int sandbox_cmdline_cb_terminal(struct sandbox_state *state,
 239                                        const char *arg)
 240 {
 241         int i;
 242
 243         for (i = 0; i < STATE_TERM_COUNT; i++) {
 244                 if (!strcmp(arg, term_args[i])) {
 245                         state->term_raw = i;
 246                         return 0;
 247                 }
 248         }
 249
 250         printf("Unknown terminal setting '%s' (", arg);
 251         for (i = 0; i < STATE_TERM_COUNT; i++)
 252                 printf("%s%s", i ? ", " : "", term_args[i]);
 253         puts(")\n");
 254
 255         return 1;
 256 }
 257 SANDBOX_CMDLINE_OPT_SHORT(terminal, 't', 1,
 258                           "Set terminal to raw/cooked mode");
 259
 260 int main(int argc, char *argv[])
 261 {
 262         struct sandbox_state *state;
 263         gd_t data;
 264         int ret;
 265
 266         ret = state_init();
 267         if (ret)
 268                 goto err;
 269
 270         state = state_get_current();
 271         if (os_parse_args(state, argc, argv))
 272                 return 1;
 273
 274         ret = sandbox_read_state(state, state->state_fname);
 275         if (ret)
 276                 goto err;
 277
 278         /* Remove old memory file if required */
 279         if (state->ram_buf_rm && state->ram_buf_fname)
 280                 os_unlink(state->ram_buf_fname);
 281
 282         memset(&data, '\0', sizeof(data));
 283         gd = &data;
 284 #ifdef CONFIG_SYS_MALLOC_F_LEN
 285         gd->malloc_base = CONFIG_MALLOC_F_ADDR;
 286 #endif
 287
 288         /* Do pre- and post-relocation init */
 289         board_init_f(0);
 290
 291         board_init_r(gd->new_gd, 0);
 292
 293         /* NOTREACHED - board_init_r() does not return */
 294         return 0;
 295
 296 err:
 297         printf("Error %d\n", ret);
 298         return 1;
 299 }