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- /***************************************************************************
- * Copyright (C) 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * Copyright (C) 2007-2010 Øyvind Harboe *
- * oyvind.harboe@zylin.com *
- * *
- * Copyright (C) 2008 by Spencer Oliver *
- * spen@spen-soft.co.uk *
- * *
- * 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. *
- ***************************************************************************/
- #ifndef TARGET_TYPE_H
- #define TARGET_TYPE_H
-
- #include <helper/types.h>
- #include <jim-nvp.h>
-
- struct target;
-
- /**
- * This holds methods shared between all instances of a given target
- * type. For example, all Cortex-M3 targets on a scan chain share
- * the same method table.
- */
- struct target_type
- {
- /**
- * Name of this type of target. Do @b not access this
- * field directly, use target_type_name() instead.
- */
- const char *name;
-
- /* poll current target status */
- int (*poll)(struct target *target);
- /* Invoked only from target_arch_state().
- * Issue USER() w/architecture specific status. */
- int (*arch_state)(struct target *target);
-
- /* target request support */
- int (*target_request_data)(struct target *target, uint32_t size, uint8_t *buffer);
-
- /* halt will log a warning, but return ERROR_OK if the target is already halted. */
- int (*halt)(struct target *target);
- int (*resume)(struct target *target, int current, uint32_t address, int handle_breakpoints, int debug_execution);
- int (*step)(struct target *target, int current, uint32_t address, int handle_breakpoints);
-
- /* target reset control. assert reset can be invoked when OpenOCD and
- * the target is out of sync.
- *
- * A typical example is that the target was power cycled while OpenOCD
- * thought the target was halted or running.
- *
- * assert_reset() can therefore make no assumptions whatsoever about the
- * state of the target
- *
- * Before assert_reset() for the target is invoked, a TRST/tms and
- * chain validation is executed. TRST should not be asserted
- * during target assert unless there is no way around it due to
- * the way reset's are configured.
- *
- */
- int (*assert_reset)(struct target *target);
- /**
- * The implementation is responsible for polling the
- * target such that target->state reflects the
- * state correctly.
- *
- * Otherwise the following would fail, as there will not
- * be any "poll" invoked inbetween the "reset run" and
- * "halt".
- *
- * reset run; halt
- */
- int (*deassert_reset)(struct target *target);
- int (*soft_reset_halt_imp)(struct target *target);
- int (*soft_reset_halt)(struct target *target);
-
- /**
- * Target register access for GDB. Do @b not call this function
- * directly, use target_get_gdb_reg_list() instead.
- *
- * Danger! this function will succeed even if the target is running
- * and return a register list with dummy values.
- *
- * The reason is that GDB connection will fail without a valid register
- * list, however it is after GDB is connected that monitor commands can
- * be run to properly initialize the target
- */
- int (*get_gdb_reg_list)(struct target *target, struct reg **reg_list[], int *reg_list_size);
-
- /* target memory access
- * size: 1 = byte (8bit), 2 = half-word (16bit), 4 = word (32bit)
- * count: number of items of <size>
- */
- int (*read_memory_imp)(struct target *target, uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer);
- /**
- * Target memory read callback. Do @b not call this function
- * directly, use target_read_memory() instead.
- */
- int (*read_memory)(struct target *target, uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer);
- int (*write_memory_imp)(struct target *target, uint32_t address, uint32_t size, uint32_t count, const uint8_t *buffer);
- /**
- * Target memory write callback. Do @b not call this function
- * directly, use target_write_memory() instead.
- */
- int (*write_memory)(struct target *target, uint32_t address, uint32_t size, uint32_t count, const uint8_t *buffer);
-
- /* Default implementation will do some fancy alignment to improve performance, target can override */
- int (*read_buffer)(struct target *target, uint32_t address, uint32_t size, uint8_t *buffer);
-
- /* Default implementation will do some fancy alignment to improve performance, target can override */
- int (*write_buffer)(struct target *target, uint32_t address, uint32_t size, const uint8_t *buffer);
-
- /**
- * Write target memory in multiples of 4 bytes, optimized for
- * writing large quantities of data. Do @b not call this
- * function directly, use target_bulk_write_memory() instead.
- */
- int (*bulk_write_memory)(struct target *target, uint32_t address, uint32_t count, const uint8_t *buffer);
-
- int (*checksum_memory)(struct target *target, uint32_t address, uint32_t count, uint32_t* checksum);
- int (*blank_check_memory)(struct target *target, uint32_t address, uint32_t count, uint32_t* blank);
-
- /*
- * target break-/watchpoint control
- * rw: 0 = write, 1 = read, 2 = access
- *
- * Target must be halted while this is invoked as this
- * will actually set up breakpoints on target.
- *
- * The breakpoint hardware will be set up upon adding the
- * first breakpoint.
- *
- * Upon GDB connection all breakpoints/watchpoints are cleared.
- */
- int (*add_breakpoint)(struct target *target, struct breakpoint *breakpoint);
-
- /* remove breakpoint. hw will only be updated if the target
- * is currently halted.
- * However, this method can be invoked on unresponsive targets.
- */
- int (*remove_breakpoint)(struct target *target, struct breakpoint *breakpoint);
-
- /* add watchpoint ... see add_breakpoint() comment above. */
- int (*add_watchpoint)(struct target *target, struct watchpoint *watchpoint);
-
- /* remove watchpoint. hw will only be updated if the target
- * is currently halted.
- * However, this method can be invoked on unresponsive targets.
- */
- int (*remove_watchpoint)(struct target *target, struct watchpoint *watchpoint);
-
- /**
- * Target algorithm support. Do @b not call this method directly,
- * use target_run_algorithm() instead.
- */
- int (*run_algorithm)(struct target *target, int num_mem_params, struct mem_param *mem_params, int num_reg_params, struct reg_param *reg_param, uint32_t entry_point, uint32_t exit_point, int timeout_ms, void *arch_info);
-
- const struct command_registration *commands;
-
- /* called when target is created */
- int (*target_create)(struct target *target, Jim_Interp *interp);
-
- /* called for various config parameters */
- /* returns JIM_CONTINUE - if option not understood */
- /* otherwise: JIM_OK, or JIM_ERR, */
- int (*target_jim_configure)(struct target *target, Jim_GetOptInfo *goi);
-
- /* target commands specifically handled by the target */
- /* returns JIM_OK, or JIM_ERR, or JIM_CONTINUE - if option not understood */
- int (*target_jim_commands)(struct target *target, Jim_GetOptInfo *goi);
-
- /**
- * This method is used to perform target setup that requires
- * JTAG access.
- *
- * This may be called multiple times. It is called after the
- * scan chain is initially validated, or later after the target
- * is enabled by a JRC. It may also be called during some
- * parts of the reset sequence.
- *
- * For one-time initialization tasks, use target_was_examined()
- * and target_set_examined(). For example, probe the hardware
- * before setting up chip-specific state, and then set that
- * flag so you don't do that again.
- */
- int (*examine)(struct target *target);
-
- /* Set up structures for target.
- *
- * It is illegal to talk to the target at this stage as this fn is invoked
- * before the JTAG chain has been examined/verified
- * */
- int (*init_target)(struct command_context *cmd_ctx, struct target *target);
-
- /* translate from virtual to physical address. Default implementation is successful
- * no-op(i.e. virtual==physical).
- */
- int (*virt2phys)(struct target *target, uint32_t address, uint32_t *physical);
-
- /* read directly from physical memory. caches are bypassed and untouched.
- *
- * If the target does not support disabling caches, leaving them untouched,
- * then minimally the actual physical memory location will be read even
- * if cache states are unchanged, flushed, etc.
- *
- * Default implementation is to call read_memory.
- */
- int (*read_phys_memory)(struct target *target, uint32_t phys_address, uint32_t size, uint32_t count, uint8_t *buffer);
-
- /*
- * same as read_phys_memory, except that it writes...
- */
- int (*write_phys_memory)(struct target *target, uint32_t phys_address, uint32_t size, uint32_t count, const uint8_t *buffer);
-
- int (*mmu)(struct target *target, int *enabled);
-
- /* after reset is complete, the target can check if things are properly set up.
- *
- * This can be used to check if e.g. DCC memory writes have been enabled for
- * arm7/9 targets, which they really should except in the most contrived
- * circumstances.
- */
- int (*check_reset)(struct target *target);
- };
-
- #endif // TARGET_TYPE_H
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