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