1 /*****************************************************************************
2 * Copyright (C) 2016 by Matthias Welwarsky <matthias.welwarsky@sysgo.com> *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
13 ****************************************************************************/
20 #include "target_type.h"
21 #include "arm_adi_v5.h"
24 #include <jtag/jtag.h>
26 #define MEM_AP_COMMON_MAGIC 0x4DE4DA50
30 struct adiv5_dap
*dap
;
35 static int mem_ap_target_create(struct target
*target
, Jim_Interp
*interp
)
37 struct mem_ap
*mem_ap
;
38 struct adiv5_private_config
*pc
;
40 pc
= (struct adiv5_private_config
*)target
->private_config
;
44 if (pc
->ap_num
== DP_APSEL_INVALID
) {
45 LOG_ERROR("AP number not specified");
49 mem_ap
= calloc(1, sizeof(struct mem_ap
));
51 LOG_ERROR("Out of memory");
55 mem_ap
->ap_num
= pc
->ap_num
;
56 mem_ap
->common_magic
= MEM_AP_COMMON_MAGIC
;
57 mem_ap
->dap
= pc
->dap
;
59 target
->arch_info
= mem_ap
;
61 if (!target
->gdb_port_override
)
62 target
->gdb_port_override
= strdup("disabled");
67 static int mem_ap_init_target(struct command_context
*cmd_ctx
, struct target
*target
)
69 LOG_DEBUG("%s", __func__
);
70 target
->state
= TARGET_UNKNOWN
;
71 target
->debug_reason
= DBG_REASON_UNDEFINED
;
75 static void mem_ap_deinit_target(struct target
*target
)
77 LOG_DEBUG("%s", __func__
);
79 free(target
->private_config
);
80 free(target
->arch_info
);
84 static int mem_ap_arch_state(struct target
*target
)
86 LOG_DEBUG("%s", __func__
);
90 static int mem_ap_poll(struct target
*target
)
92 if (target
->state
== TARGET_UNKNOWN
) {
93 target
->state
= TARGET_RUNNING
;
94 target
->debug_reason
= DBG_REASON_NOTHALTED
;
100 static int mem_ap_halt(struct target
*target
)
102 LOG_DEBUG("%s", __func__
);
103 target
->state
= TARGET_HALTED
;
104 target
->debug_reason
= DBG_REASON_DBGRQ
;
105 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
109 static int mem_ap_resume(struct target
*target
, int current
, target_addr_t address
,
110 int handle_breakpoints
, int debug_execution
)
112 LOG_DEBUG("%s", __func__
);
113 target
->state
= TARGET_RUNNING
;
114 target
->debug_reason
= DBG_REASON_NOTHALTED
;
118 static int mem_ap_step(struct target
*target
, int current
, target_addr_t address
,
119 int handle_breakpoints
)
121 LOG_DEBUG("%s", __func__
);
122 target
->state
= TARGET_HALTED
;
123 target
->debug_reason
= DBG_REASON_DBGRQ
;
124 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
128 static int mem_ap_assert_reset(struct target
*target
)
130 target
->state
= TARGET_RESET
;
131 target
->debug_reason
= DBG_REASON_UNDEFINED
;
133 LOG_DEBUG("%s", __func__
);
137 static int mem_ap_examine(struct target
*target
)
139 struct mem_ap
*mem_ap
= target
->arch_info
;
141 if (!target_was_examined(target
)) {
142 mem_ap
->ap
= dap_ap(mem_ap
->dap
, mem_ap
->ap_num
);
143 target_set_examined(target
);
144 target
->state
= TARGET_UNKNOWN
;
145 target
->debug_reason
= DBG_REASON_UNDEFINED
;
146 return mem_ap_init(mem_ap
->ap
);
152 static int mem_ap_deassert_reset(struct target
*target
)
154 if (target
->reset_halt
) {
155 target
->state
= TARGET_HALTED
;
156 target
->debug_reason
= DBG_REASON_DBGRQ
;
157 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
159 target
->state
= TARGET_RUNNING
;
160 target
->debug_reason
= DBG_REASON_NOTHALTED
;
163 LOG_DEBUG("%s", __func__
);
167 static int mem_ap_reg_get(struct reg
*reg
)
172 static int mem_ap_reg_set(struct reg
*reg
, uint8_t *buf
)
177 static struct reg_arch_type mem_ap_reg_arch_type
= {
178 .get
= mem_ap_reg_get
,
179 .set
= mem_ap_reg_set
,
182 const char *mem_ap_get_gdb_arch(struct target
*target
)
188 * Dummy ARM register emulation:
189 * reg[0..15]: 32 bits, r0~r12, sp, lr, pc
190 * reg[16..23]: 96 bits, f0~f7
191 * reg[24]: 32 bits, fps
192 * reg[25]: 32 bits, cpsr
194 * Set 'exist' only to reg[0..15], so initial response to GDB is correct
197 #define MAX_REG_SIZE 96
198 #define REG_EXIST(n) ((n) < 16)
199 #define REG_SIZE(n) ((((n) >= 16) && ((n) < 24)) ? 96 : 32)
201 struct mem_ap_alloc_reg_list
{
202 /* reg_list must be the first field */
203 struct reg
*reg_list
[NUM_REGS
];
204 struct reg regs
[NUM_REGS
];
205 uint8_t regs_value
[MAX_REG_SIZE
/ 8];
208 static int mem_ap_get_gdb_reg_list(struct target
*target
, struct reg
**reg_list
[],
209 int *reg_list_size
, enum target_register_class reg_class
)
211 struct mem_ap_alloc_reg_list
*mem_ap_alloc
= calloc(1, sizeof(struct mem_ap_alloc_reg_list
));
213 LOG_ERROR("Out of memory");
217 *reg_list
= mem_ap_alloc
->reg_list
;
218 *reg_list_size
= NUM_REGS
;
219 struct reg
*regs
= mem_ap_alloc
->regs
;
221 for (int i
= 0; i
< NUM_REGS
; i
++) {
223 regs
[i
].value
= mem_ap_alloc
->regs_value
;
224 regs
[i
].size
= REG_SIZE(i
);
225 regs
[i
].exist
= REG_EXIST(i
);
226 regs
[i
].type
= &mem_ap_reg_arch_type
;
227 (*reg_list
)[i
] = ®s
[i
];
233 static int mem_ap_read_memory(struct target
*target
, target_addr_t address
,
234 uint32_t size
, uint32_t count
, uint8_t *buffer
)
236 struct mem_ap
*mem_ap
= target
->arch_info
;
238 LOG_DEBUG("Reading memory at physical address " TARGET_ADDR_FMT
239 "; size %" PRIu32
"; count %" PRIu32
, address
, size
, count
);
241 if (count
== 0 || !buffer
)
242 return ERROR_COMMAND_SYNTAX_ERROR
;
244 return mem_ap_read_buf(mem_ap
->ap
, buffer
, size
, count
, address
);
247 static int mem_ap_write_memory(struct target
*target
, target_addr_t address
,
248 uint32_t size
, uint32_t count
,
249 const uint8_t *buffer
)
251 struct mem_ap
*mem_ap
= target
->arch_info
;
253 LOG_DEBUG("Writing memory at physical address " TARGET_ADDR_FMT
254 "; size %" PRIu32
"; count %" PRIu32
, address
, size
, count
);
256 if (count
== 0 || !buffer
)
257 return ERROR_COMMAND_SYNTAX_ERROR
;
259 return mem_ap_write_buf(mem_ap
->ap
, buffer
, size
, count
, address
);
262 struct target_type mem_ap_target
= {
265 .target_create
= mem_ap_target_create
,
266 .init_target
= mem_ap_init_target
,
267 .deinit_target
= mem_ap_deinit_target
,
268 .examine
= mem_ap_examine
,
269 .target_jim_configure
= adiv5_jim_configure
,
272 .arch_state
= mem_ap_arch_state
,
275 .resume
= mem_ap_resume
,
278 .assert_reset
= mem_ap_assert_reset
,
279 .deassert_reset
= mem_ap_deassert_reset
,
281 .get_gdb_arch
= mem_ap_get_gdb_arch
,
282 .get_gdb_reg_list
= mem_ap_get_gdb_reg_list
,
284 .read_memory
= mem_ap_read_memory
,
285 .write_memory
= mem_ap_write_memory
,
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