1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (c) 2011-2012 The Chromium OS Authors. 4 */ 5 6 #ifndef __SANDBOX_STATE_H 7 #define __SANDBOX_STATE_H 8 9 #include <config.h> 10 #include <sysreset.h> 11 #include <stdbool.h> 12 #include <linux/list.h> 13 #include <linux/stringify.h> 14 15 /** 16 * Selects the behavior of the serial terminal. 17 * 18 * If Ctrl-C is processed by U-Boot, then the only way to quit sandbox is with 19 * the 'reset' command, or equivalent. 20 * 21 * If the terminal is cooked, then Ctrl-C will terminate U-Boot, and the 22 * command line will not be quite such a faithful emulation. 23 * 24 * Options are: 25 * 26 * raw-with-sigs - Raw, but allow signals (Ctrl-C will quit) 27 * raw - Terminal is always raw 28 * cooked - Terminal is always cooked 29 */ 30 enum state_terminal_raw { 31 STATE_TERM_RAW_WITH_SIGS, /* Default */ 32 STATE_TERM_RAW, 33 STATE_TERM_COOKED, 34 35 STATE_TERM_COUNT, 36 }; 37 38 struct sandbox_spi_info { 39 struct udevice *emul; 40 }; 41 42 struct sandbox_wdt_info { 43 unsigned long long counter; 44 uint reset_count; 45 bool running; 46 }; 47 48 /** 49 * struct sandbox_mapmem_entry - maps pointers to/from U-Boot addresses 50 * 51 * When map_to_sysmem() is called with an address outside sandbox's emulated 52 * RAM, a record is created with a tag that can be used to reference that 53 * pointer. When map_sysmem() is called later with that tag, the pointer will 54 * be returned, just as it would for a normal sandbox address. 55 * 56 * @tag: Address tag (a value which U-Boot uses to refer to the address) 57 * @ptr: Associated pointer for that tag 58 */ 59 struct sandbox_mapmem_entry { 60 ulong tag; 61 void *ptr; 62 struct list_head sibling_node; 63 }; 64 65 /* The complete state of the test system */ 66 struct sandbox_state { 67 const char *cmd; /* Command to execute */ 68 bool interactive; /* Enable cmdline after execute */ 69 bool run_distro_boot; /* Automatically run distro bootcommands */ 70 const char *fdt_fname; /* Filename of FDT binary */ 71 const char *parse_err; /* Error to report from parsing */ 72 int argc; /* Program arguments */ 73 char **argv; /* Command line arguments */ 74 const char *jumped_fname; /* Jumped from previous U_Boot */ 75 uint8_t *ram_buf; /* Emulated RAM buffer */ 76 unsigned int ram_size; /* Size of RAM buffer */ 77 const char *ram_buf_fname; /* Filename to use for RAM buffer */ 78 bool ram_buf_rm; /* Remove RAM buffer file after read */ 79 bool write_ram_buf; /* Write RAM buffer on exit */ 80 const char *state_fname; /* File containing sandbox state */ 81 void *state_fdt; /* Holds saved state for sandbox */ 82 bool read_state; /* Read sandbox state on startup */ 83 bool write_state; /* Write sandbox state on exit */ 84 bool ignore_missing_state_on_read; /* No error if state missing */ 85 bool show_lcd; /* Show LCD on start-up */ 86 enum sysreset_t last_sysreset; /* Last system reset type */ 87 bool sysreset_allowed[SYSRESET_COUNT]; /* Allowed system reset types */ 88 enum state_terminal_raw term_raw; /* Terminal raw/cooked */ 89 bool skip_delays; /* Ignore any time delays (for test) */ 90 bool show_test_output; /* Don't suppress stdout in tests */ 91 int default_log_level; /* Default log level for sandbox */ 92 bool show_of_platdata; /* Show of-platdata in SPL */ 93 bool ram_buf_read; /* true if we read the RAM buffer */ 94 95 /* Pointer to information for each SPI bus/cs */ 96 struct sandbox_spi_info spi[CONFIG_SANDBOX_SPI_MAX_BUS] 97 [CONFIG_SANDBOX_SPI_MAX_CS]; 98 99 /* Information about Watchdog */ 100 struct sandbox_wdt_info wdt; 101 102 ulong next_tag; /* Next address tag to allocate */ 103 struct list_head mapmem_head; /* struct sandbox_mapmem_entry */ 104 bool hwspinlock; /* Hardware Spinlock status */ 105 }; 106 107 /* Minimum space we guarantee in the state FDT when calling read/write*/ 108 #define SANDBOX_STATE_MIN_SPACE 0x1000 109 110 /** 111 * struct sandbox_state_io - methods to saved/restore sandbox state 112 * @name: Name of of the device tree node, also the name of the variable 113 * holding this data so it should be an identifier (use underscore 114 * instead of minus) 115 * @compat: Compatible string for the node containing this state 116 * 117 * @read: Function to read state from FDT 118 * If data is available, then blob and node will provide access to it. If 119 * not (blob == NULL and node == -1) this function should set up an empty 120 * data set for start-of-day. 121 * @param blob: Pointer to device tree blob, or NULL if no data to read 122 * @param node: Node offset to read from 123 * @return 0 if OK, -ve on error 124 * 125 * @write: Function to write state to FDT 126 * The caller will ensure that there is a node ready for the state. The 127 * node may already contain the old state, in which case it should be 128 * overridden. There is guaranteed to be SANDBOX_STATE_MIN_SPACE bytes 129 * of free space, so error checking is not required for fdt_setprop...() 130 * calls which add up to less than this much space. 131 * 132 * For adding larger properties, use state_setprop(). 133 * 134 * @param blob: Device tree blob holding state 135 * @param node: Node to write our state into 136 * 137 * Note that it is possible to save data as large blobs or as individual 138 * hierarchical properties. However, unless you intend to keep state files 139 * around for a long time and be able to run an old state file on a new 140 * sandbox, it might not be worth using individual properties for everything. 141 * This is certainly supported, it is just a matter of the effort you wish 142 * to put into the state read/write feature. 143 */ 144 struct sandbox_state_io { 145 const char *name; 146 const char *compat; 147 int (*write)(void *blob, int node); 148 int (*read)(const void *blob, int node); 149 }; 150 151 /** 152 * SANDBOX_STATE_IO - Declare sandbox state to read/write 153 * 154 * Sandbox permits saving state from one run and restoring it in another. This 155 * allows the test system to retain state between runs and thus better 156 * emulate a real system. Examples of state that might be useful to save are 157 * the emulated GPIOs pin settings, flash memory contents and TPM private 158 * data. U-Boot memory contents is dealth with separately since it is large 159 * and it is not normally useful to save it (since a normal system does not 160 * preserve DRAM between runs). See the '-m' option for this. 161 * 162 * See struct sandbox_state_io above for member documentation. 163 */ 164 #define SANDBOX_STATE_IO(_name, _compat, _read, _write) \ 165 ll_entry_declare(struct sandbox_state_io, _name, state_io) = { \ 166 .name = __stringify(_name), \ 167 .read = _read, \ 168 .write = _write, \ 169 .compat = _compat, \ 170 } 171 172 /** 173 * Gets a pointer to the current state. 174 * 175 * @return pointer to state 176 */ 177 struct sandbox_state *state_get_current(void); 178 179 /** 180 * Read the sandbox state from the supplied device tree file 181 * 182 * This calls all registered state handlers to read in the sandbox state 183 * from a previous test run. 184 * 185 * @param state Sandbox state to update 186 * @param fname Filename of device tree file to read from 187 * @return 0 if OK, -ve on error 188 */ 189 int sandbox_read_state(struct sandbox_state *state, const char *fname); 190 191 /** 192 * Write the sandbox state to the supplied device tree file 193 * 194 * This calls all registered state handlers to write out the sandbox state 195 * so that it can be preserved for a future test run. 196 * 197 * If the file exists it is overwritten. 198 * 199 * @param state Sandbox state to update 200 * @param fname Filename of device tree file to write to 201 * @return 0 if OK, -ve on error 202 */ 203 int sandbox_write_state(struct sandbox_state *state, const char *fname); 204 205 /** 206 * Add a property to a sandbox state node 207 * 208 * This is equivalent to fdt_setprop except that it automatically enlarges 209 * the device tree if necessary. That means it is safe to write any amount 210 * of data here. 211 * 212 * This function can only be called from within struct sandbox_state_io's 213 * ->write method, i.e. within state I/O drivers. 214 * 215 * @param node Device tree node to write to 216 * @param prop_name Property to write 217 * @param data Data to write into property 218 * @param size Size of data to write into property 219 */ 220 int state_setprop(int node, const char *prop_name, const void *data, int size); 221 222 /** 223 * Control skipping of time delays 224 * 225 * Some tests have unnecessay time delays (e.g. USB). Allow these to be 226 * skipped to speed up testing 227 * 228 * @param skip_delays true to skip delays from now on, false to honour delay 229 * requests 230 */ 231 void state_set_skip_delays(bool skip_delays); 232 233 /** 234 * See if delays should be skipped 235 * 236 * @return true if delays should be skipped, false if they should be honoured 237 */ 238 bool state_get_skip_delays(void); 239 240 /** 241 * state_reset_for_test() - Reset ready to re-run tests 242 * 243 * This clears out any test state ready for another test run. 244 */ 245 void state_reset_for_test(struct sandbox_state *state); 246 247 /** 248 * state_show() - Show information about the sandbox state 249 * 250 * @param state Sandbox state to show 251 */ 252 void state_show(struct sandbox_state *state); 253 254 /** 255 * Initialize the test system state 256 */ 257 int state_init(void); 258 259 /** 260 * Uninitialize the test system state, writing out state if configured to 261 * do so. 262 * 263 * @return 0 if OK, -ve on error 264 */ 265 int state_uninit(void); 266 267 #endif 268