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                 int retval;
  82
  83                 cli_init();
  84
  85                 retval = run_command_list(state->cmd, -1, 0);
  86                 if (!state->interactive)
  87                         os_exit(retval);
  88         }
  89
  90         return 0;
  91 }
  92
  93 static int sandbox_cmdline_cb_command(struct sandbox_state *state,
  94                                       const char *arg)
  95 {
  96         state->cmd = arg;
  97         return 0;
  98 }
  99 SANDBOX_CMDLINE_OPT_SHORT(command, 'c', 1, "Execute U-Boot command");
 100
 101 static int sandbox_cmdline_cb_fdt(struct sandbox_state *state, const char *arg)
 102 {
 103         state->fdt_fname = arg;
 104         return 0;
 105 }
 106 SANDBOX_CMDLINE_OPT_SHORT(fdt, 'd', 1, "Specify U-Boot's control FDT");
 107
 108 static int sandbox_cmdline_cb_default_fdt(struct sandbox_state *state,
 109                                           const char *arg)
 110 {
 111         const char *fmt = "%s.dtb";
 112         char *fname;
 113         int len;
 114
 115         len = strlen(state->argv[0]) + strlen(fmt) + 1;
 116         fname = os_malloc(len);
 117         if (!fname)
 118                 return -ENOMEM;
 119         snprintf(fname, len, fmt, state->argv[0]);
 120         state->fdt_fname = fname;
 121
 122         return 0;
 123 }
 124 SANDBOX_CMDLINE_OPT_SHORT(default_fdt, 'D', 0,
 125                 "Use the default u-boot.dtb control FDT in U-Boot directory");
 126
 127 static int sandbox_cmdline_cb_interactive(struct sandbox_state *state,
 128                                           const char *arg)
 129 {
 130         state->interactive = true;
 131         return 0;
 132 }
 133
 134 SANDBOX_CMDLINE_OPT_SHORT(interactive, 'i', 0, "Enter interactive mode");
 135
 136 static int sandbox_cmdline_cb_jump(struct sandbox_state *state,
 137                                    const char *arg)
 138 {
 139         /* Remember to delete this U-Boot image later */
 140         state->jumped_fname = arg;
 141
 142         return 0;
 143 }
 144 SANDBOX_CMDLINE_OPT_SHORT(jump, 'j', 1, "Jumped from previous U-Boot");
 145
 146 static int sandbox_cmdline_cb_memory(struct sandbox_state *state,
 147                                      const char *arg)
 148 {
 149         int err;
 150
 151         /* For now assume we always want to write it */
 152         state->write_ram_buf = true;
 153         state->ram_buf_fname = arg;
 154
 155         err = os_read_ram_buf(arg);
 156         if (err) {
 157                 printf("Failed to read RAM buffer\n");
 158                 return err;
 159         }
 160
 161         return 0;
 162 }
 163 SANDBOX_CMDLINE_OPT_SHORT(memory, 'm', 1,
 164                           "Read/write ram_buf memory contents from file");
 165
 166 static int sandbox_cmdline_cb_rm_memory(struct sandbox_state *state,
 167                                         const char *arg)
 168 {
 169         state->ram_buf_rm = true;
 170
 171         return 0;
 172 }
 173 SANDBOX_CMDLINE_OPT(rm_memory, 0, "Remove memory file after reading");
 174
 175 static int sandbox_cmdline_cb_state(struct sandbox_state *state,
 176                                     const char *arg)
 177 {
 178         state->state_fname = arg;
 179         return 0;
 180 }
 181 SANDBOX_CMDLINE_OPT_SHORT(state, 's', 1, "Specify the sandbox state FDT");
 182
 183 static int sandbox_cmdline_cb_read(struct sandbox_state *state,
 184                                    const char *arg)
 185 {
 186         state->read_state = true;
 187         return 0;
 188 }
 189 SANDBOX_CMDLINE_OPT_SHORT(read, 'r', 0, "Read the state FDT on startup");
 190
 191 static int sandbox_cmdline_cb_write(struct sandbox_state *state,
 192                                     const char *arg)
 193 {
 194         state->write_state = true;
 195         return 0;
 196 }
 197 SANDBOX_CMDLINE_OPT_SHORT(write, 'w', 0, "Write state FDT on exit");
 198
 199 static int sandbox_cmdline_cb_ignore_missing(struct sandbox_state *state,
 200                                              const char *arg)
 201 {
 202         state->ignore_missing_state_on_read = true;
 203         return 0;
 204 }
 205 SANDBOX_CMDLINE_OPT_SHORT(ignore_missing, 'n', 0,
 206                           "Ignore missing state on read");
 207
 208 static int sandbox_cmdline_cb_show_lcd(struct sandbox_state *state,
 209                                        const char *arg)
 210 {
 211         state->show_lcd = true;
 212         return 0;
 213 }
 214 SANDBOX_CMDLINE_OPT_SHORT(show_lcd, 'l', 0,
 215                           "Show the sandbox LCD display");
 216
 217 static const char *term_args[STATE_TERM_COUNT] = {
 218         "raw-with-sigs",
 219         "raw",
 220         "cooked",
 221 };
 222
 223 static int sandbox_cmdline_cb_terminal(struct sandbox_state *state,
 224                                        const char *arg)
 225 {
 226         int i;
 227
 228         for (i = 0; i < STATE_TERM_COUNT; i++) {
 229                 if (!strcmp(arg, term_args[i])) {
 230                         state->term_raw = i;
 231                         return 0;
 232                 }
 233         }
 234
 235         printf("Unknown terminal setting '%s' (", arg);
 236         for (i = 0; i < STATE_TERM_COUNT; i++)
 237                 printf("%s%s", i ? ", " : "", term_args[i]);
 238         puts(")\n");
 239
 240         return 1;
 241 }
 242 SANDBOX_CMDLINE_OPT_SHORT(terminal, 't', 1,
 243                           "Set terminal to raw/cooked mode");
 244
 245 int main(int argc, char *argv[])
 246 {
 247         struct sandbox_state *state;
 248         gd_t data;
 249         int ret;
 250
 251         ret = state_init();
 252         if (ret)
 253                 goto err;
 254
 255         state = state_get_current();
 256         if (os_parse_args(state, argc, argv))
 257                 return 1;
 258
 259         ret = sandbox_read_state(state, state->state_fname);
 260         if (ret)
 261                 goto err;
 262
 263         /* Remove old memory file if required */
 264         if (state->ram_buf_rm && state->ram_buf_fname)
 265                 os_unlink(state->ram_buf_fname);
 266
 267         memset(&data, '\0', sizeof(data));
 268         gd = &data;
 269 #ifdef CONFIG_SYS_MALLOC_F_LEN
 270         gd->malloc_base = CONFIG_MALLOC_F_ADDR;
 271 #endif
 272
 273         /* Do pre- and post-relocation init */
 274         board_init_f(0);
 275
 276         board_init_r(gd->new_gd, 0);
 277
 278         /* NOTREACHED - board_init_r() does not return */
 279         return 0;
 280
 281 err:
 282         printf("Error %d\n", ret);
 283         return 1;
 284 }