10 #include <asm/state.h>
12 /* Main state record for the sandbox */
14 static struct sandbox_state *state;	/* Pointer to current state record */  variable
18 	void *blob = state->state_fdt;  in state_ensure_space()
41 	state->state_fdt = buf;  in state_ensure_space()
45 static int state_read_file(struct sandbox_state *state, const char *fname)  in state_read_file()  argument
53 		printf("Cannot find sandbox state file '%s'\n", fname);  in state_read_file()
56 	state->state_fdt = os_malloc(size);  in state_read_file()
57 	if (!state->state_fdt) {  in state_read_file()
58 		puts("No memory to read sandbox state\n");  in state_read_file()
63 		printf("Cannot open sandbox state file '%s'\n", fname);  in state_read_file()
67 	if (os_read(fd, state->state_fdt, size) != size) {  in state_read_file()
68 		printf("Cannot read sandbox state file '%s'\n", fname);  in state_read_file()
78 	os_free(state->state_fdt);  in state_read_file()
79 	state->state_fdt = NULL;  in state_read_file()
85  * sandbox_read_state_nodes() - Read state associated with a driver
88  * each one, to read in the state.
91  * single global state for that driver.
93  * @state: Sandbox state
94  * @io: Method to use for reading state
95  * @blob: FDT containing state
98 int sandbox_read_state_nodes(struct sandbox_state *state,  in sandbox_read_state_nodes()  argument
118 			printf("Unable to read state for '%s'\n", io->compat);  in sandbox_read_state_nodes()
125 	 * If we got no saved state, call the read function once without a  in sandbox_read_state_nodes()
126 	 * node, to set up the global state.  in sandbox_read_state_nodes()
132 			printf("Unable to read global state for '%s'\n",  in sandbox_read_state_nodes()
141 int sandbox_read_state(struct sandbox_state *state, const char *fname)  in sandbox_read_state()  argument
148 	if (state->read_state && fname) {  in sandbox_read_state()
149 		ret = state_read_file(state, fname);  in sandbox_read_state()
150 		if (ret == -ENOENT && state->ignore_missing_state_on_read)  in sandbox_read_state()
156 	/* Call all the state read functions */  in sandbox_read_state()
158 	blob = state->state_fdt;  in sandbox_read_state()
161 		ret = sandbox_read_state_nodes(state, io, blob);  in sandbox_read_state()
166 	if (state->read_state && fname) {  in sandbox_read_state()
167 		debug("Read sandbox state from '%s'%s\n", fname,  in sandbox_read_state()
175  * sandbox_write_state_node() - Write state associated with a driver
177  * This calls the write function to write out global state for that driver.
179  * TODO(sjg@chromium.org): Support writing out state from multiple drivers
183  * @state: Sandbox state
184  * @io: Method to use for writing state
188 int sandbox_write_state_node(struct sandbox_state *state,  in sandbox_write_state_node()  argument
200 		printf("Failed to add more space for state\n");  in sandbox_write_state_node()
205 	blob = state->state_fdt;  in sandbox_write_state_node()
224 	debug("Write state for '%s' to node %d\n", io->compat, node);  in sandbox_write_state_node()
227 		printf("Unable to write state for '%s'\n", io->compat);  in sandbox_write_state_node()
234 int sandbox_write_state(struct sandbox_state *state, const char *fname)  in sandbox_write_state()  argument
242 	/* Create a state FDT if we don't have one */  in sandbox_write_state()
243 	if (!state->state_fdt) {  in sandbox_write_state()
245 		state->state_fdt = os_malloc(size);  in sandbox_write_state()
246 		if (!state->state_fdt) {  in sandbox_write_state()
250 		ret = fdt_create_empty_tree(state->state_fdt, size);  in sandbox_write_state()
252 			printf("Cannot create empty state FDT: %s\n",  in sandbox_write_state()
259 	/* Call all the state write funtcions */  in sandbox_write_state()
264 		ret = sandbox_write_state_node(state, io);  in sandbox_write_state()
272 		printf("Could not write sandbox state\n");  in sandbox_write_state()
276 	ret = fdt_pack(state->state_fdt);  in sandbox_write_state()
278 		printf("Cannot pack state FDT: %s\n", fdt_strerror(ret));  in sandbox_write_state()
282 	size = fdt_totalsize(state->state_fdt);  in sandbox_write_state()
285 		printf("Cannot open sandbox state file '%s'\n", fname);  in sandbox_write_state()
289 	if (os_write(fd, state->state_fdt, size) != size) {  in sandbox_write_state()
290 		printf("Cannot write sandbox state file '%s'\n", fname);  in sandbox_write_state()
296 	debug("Wrote sandbox state to '%s'%s\n", fname,  in sandbox_write_state()
303 	os_free(state->state_fdt);  in sandbox_write_state()
314 	fdt_getprop(state->state_fdt, node, prop_name, &len);  in state_setprop()
322 	blob = state->state_fdt;  in state_setprop()
336 	assert(state);  in state_get_current()
337 	return state;  in state_get_current()
342 	struct sandbox_state *state = state_get_current();  in state_set_skip_delays()  local
344 	state->skip_delays = skip_delays;  in state_set_skip_delays()
349 	struct sandbox_state *state = state_get_current();  in state_get_skip_delays()  local
351 	return state->skip_delays;  in state_get_skip_delays()
354 void state_reset_for_test(struct sandbox_state *state)  in state_reset_for_test()  argument
357 	state->last_sysreset = SYSRESET_COUNT;  in state_reset_for_test()
358 	state->sysreset_allowed[SYSRESET_POWER] = true;  in state_reset_for_test()
360 	memset(&state->wdt, '\0', sizeof(state->wdt));  in state_reset_for_test()
361 	memset(state->spi, '\0', sizeof(state->spi));  in state_reset_for_test()
368 	INIT_LIST_HEAD(&state->mapmem_head);  in state_reset_for_test()
369 	state->next_tag = state->ram_size;  in state_reset_for_test()
374 	state = &main_state;  in state_init()
376 	state->ram_size = CONFIG_SYS_SDRAM_SIZE;  in state_init()
377 	state->ram_buf = os_malloc(state->ram_size);  in state_init()
378 	assert(state->ram_buf);  in state_init()
380 	state_reset_for_test(state);  in state_init()
394 	state = &main_state;  in state_uninit()
396 	if (state->write_ram_buf) {  in state_uninit()
397 		err = os_write_ram_buf(state->ram_buf_fname);  in state_uninit()
404 	if (state->write_state) {  in state_uninit()
405 		if (sandbox_write_state(state, state->state_fname)) {  in state_uninit()
406 			printf("Failed to write sandbox state\n");  in state_uninit()
412 	if (state->ram_buf_rm && state->ram_buf_fname)  in state_uninit()
413 		os_unlink(state->ram_buf_fname);  in state_uninit()
416 	if (state->jumped_fname)  in state_uninit()
417 		os_unlink(state->jumped_fname);  in state_uninit()
419 	if (state->state_fdt)  in state_uninit()
420 		os_free(state->state_fdt);  in state_uninit()
421 	memset(state, '\0', sizeof(*state));  in state_uninit()