/*
* Copyright (c) 2011-2012 The Chromium OS Authors.
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __SANDBOX_STATE_H
#define __SANDBOX_STATE_H
#include <config.h>
+#include <stdbool.h>
+#include <linux/stringify.h>
/* How we exited U-Boot */
enum exit_type_id {
STATE_EXIT_POWER_OFF,
};
+/**
+ * Selects the behavior of the serial terminal.
+ *
+ * If Ctrl-C is processed by U-Boot, then the only way to quit sandbox is with
+ * the 'reset' command, or equivalent.
+ *
+ * If the terminal is cooked, then Ctrl-C will terminate U-Boot, and the
+ * command line will not be quite such a faithful emulation.
+ *
+ * Options are:
+ *
+ * raw-with-sigs - Raw, but allow signals (Ctrl-C will quit)
+ * raw - Terminal is always raw
+ * cooked - Terminal is always cooked
+ */
+enum state_terminal_raw {
+ STATE_TERM_RAW_WITH_SIGS, /* Default */
+ STATE_TERM_RAW,
+ STATE_TERM_COOKED,
+
+ STATE_TERM_COUNT,
+};
+
+struct sandbox_spi_info {
+ const char *spec;
+ const struct sandbox_spi_emu_ops *ops;
+};
+
/* The complete state of the test system */
struct sandbox_state {
const char *cmd; /* Command to execute */
+ bool interactive; /* Enable cmdline after execute */
+ const char *fdt_fname; /* Filename of FDT binary */
enum exit_type_id exit_type; /* How we exited U-Boot */
const char *parse_err; /* Error to report from parsing */
int argc; /* Program arguments */
- char **argv;
+ char **argv; /* Command line arguments */
+ const char *jumped_fname; /* Jumped from previous U_Boot */
+ uint8_t *ram_buf; /* Emulated RAM buffer */
+ unsigned int ram_size; /* Size of RAM buffer */
+ const char *ram_buf_fname; /* Filename to use for RAM buffer */
+ bool ram_buf_rm; /* Remove RAM buffer file after read */
+ bool write_ram_buf; /* Write RAM buffer on exit */
+ const char *state_fname; /* File containing sandbox state */
+ void *state_fdt; /* Holds saved state for sandbox */
+ bool read_state; /* Read sandbox state on startup */
+ bool write_state; /* Write sandbox state on exit */
+ bool ignore_missing_state_on_read; /* No error if state missing */
+ bool show_lcd; /* Show LCD on start-up */
+ enum state_terminal_raw term_raw; /* Terminal raw/cooked */
+
+ /* Pointer to information for each SPI bus/cs */
+ struct sandbox_spi_info spi[CONFIG_SANDBOX_SPI_MAX_BUS]
+ [CONFIG_SANDBOX_SPI_MAX_CS];
};
+/* Minimum space we guarantee in the state FDT when calling read/write*/
+#define SANDBOX_STATE_MIN_SPACE 0x1000
+
+/**
+ * struct sandbox_state_io - methods to saved/restore sandbox state
+ * @name: Name of of the device tree node, also the name of the variable
+ * holding this data so it should be an identifier (use underscore
+ * instead of minus)
+ * @compat: Compatible string for the node containing this state
+ *
+ * @read: Function to read state from FDT
+ * If data is available, then blob and node will provide access to it. If
+ * not (blob == NULL and node == -1) this function should set up an empty
+ * data set for start-of-day.
+ * @param blob: Pointer to device tree blob, or NULL if no data to read
+ * @param node: Node offset to read from
+ * @return 0 if OK, -ve on error
+ *
+ * @write: Function to write state to FDT
+ * The caller will ensure that there is a node ready for the state. The
+ * node may already contain the old state, in which case it should be
+ * overridden. There is guaranteed to be SANDBOX_STATE_MIN_SPACE bytes
+ * of free space, so error checking is not required for fdt_setprop...()
+ * calls which add up to less than this much space.
+ *
+ * For adding larger properties, use state_setprop().
+ *
+ * @param blob: Device tree blob holding state
+ * @param node: Node to write our state into
+ *
+ * Note that it is possible to save data as large blobs or as individual
+ * hierarchical properties. However, unless you intend to keep state files
+ * around for a long time and be able to run an old state file on a new
+ * sandbox, it might not be worth using individual properties for everything.
+ * This is certainly supported, it is just a matter of the effort you wish
+ * to put into the state read/write feature.
+ */
+struct sandbox_state_io {
+ const char *name;
+ const char *compat;
+ int (*write)(void *blob, int node);
+ int (*read)(const void *blob, int node);
+};
+
+/**
+ * SANDBOX_STATE_IO - Declare sandbox state to read/write
+ *
+ * Sandbox permits saving state from one run and restoring it in another. This
+ * allows the test system to retain state between runs and thus better
+ * emulate a real system. Examples of state that might be useful to save are
+ * the emulated GPIOs pin settings, flash memory contents and TPM private
+ * data. U-Boot memory contents is dealth with separately since it is large
+ * and it is not normally useful to save it (since a normal system does not
+ * preserve DRAM between runs). See the '-m' option for this.
+ *
+ * See struct sandbox_state_io above for member documentation.
+ */
+#define SANDBOX_STATE_IO(_name, _compat, _read, _write) \
+ ll_entry_declare(struct sandbox_state_io, _name, state_io) = { \
+ .name = __stringify(_name), \
+ .read = _read, \
+ .write = _write, \
+ .compat = _compat, \
+ }
+
/**
* Record the exit type to be reported by the test program.
*
*/
struct sandbox_state *state_get_current(void);
+/**
+ * Read the sandbox state from the supplied device tree file
+ *
+ * This calls all registered state handlers to read in the sandbox state
+ * from a previous test run.
+ *
+ * @param state Sandbox state to update
+ * @param fname Filename of device tree file to read from
+ * @return 0 if OK, -ve on error
+ */
+int sandbox_read_state(struct sandbox_state *state, const char *fname);
+
+/**
+ * Write the sandbox state to the supplied device tree file
+ *
+ * This calls all registered state handlers to write out the sandbox state
+ * so that it can be preserved for a future test run.
+ *
+ * If the file exists it is overwritten.
+ *
+ * @param state Sandbox state to update
+ * @param fname Filename of device tree file to write to
+ * @return 0 if OK, -ve on error
+ */
+int sandbox_write_state(struct sandbox_state *state, const char *fname);
+
+/**
+ * Add a property to a sandbox state node
+ *
+ * This is equivalent to fdt_setprop except that it automatically enlarges
+ * the device tree if necessary. That means it is safe to write any amount
+ * of data here.
+ *
+ * This function can only be called from within struct sandbox_state_io's
+ * ->write method, i.e. within state I/O drivers.
+ *
+ * @param node Device tree node to write to
+ * @param prop_name Property to write
+ * @param data Data to write into property
+ * @param size Size of data to write into property
+ */
+int state_setprop(int node, const char *prop_name, const void *data, int size);
+
/**
* Initialize the test system state
*/
int state_init(void);
+/**
+ * Uninitialize the test system state, writing out state if configured to
+ * do so.
+ *
+ * @return 0 if OK, -ve on error
+ */
+int state_uninit(void);
+
#endif
projects / karo-tx-uboot.git / blobdiff