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1 | /* | |
2 | * (C) Copyright 2014,2016 Leo C. <erbl259-lmu@yahoo.de> | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0 | |
5 | */ | |
6 | ||
7 | #include "debug.h" | |
8 | #include "common.h" | |
9 | #include <stdlib.h> /* __malloc_margin */ | |
10 | #include <string.h> | |
11 | #include <ctype.h> | |
12 | #include <avr/eeprom.h> | |
13 | ||
14 | #include "command.h" | |
15 | #include "cli_readline.h" | |
16 | #include "eval_arg.h" | |
17 | #include "print-utils.h" | |
18 | ||
19 | /* | |
20 | * Debugging | |
21 | */ | |
22 | ||
23 | #ifdef DEBUG | |
24 | ||
25 | ||
26 | #if 0 | |
27 | void dump_heap(void) | |
28 | { | |
29 | extern unsigned int __brkval; | |
30 | ||
31 | dump_ram(__malloc_heap_start, | |
32 | __brkval - (unsigned int) __malloc_heap_start, | |
33 | "=== Heap:"); | |
34 | } | |
35 | #endif | |
36 | ||
37 | ||
38 | /* | |
39 | * Memory Display | |
40 | * md addr {len} | |
41 | */ | |
42 | command_ret_t do_dump_mem(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
43 | { | |
44 | int (*readwhat)(uint8_t *buf, uint32_t addr, uint8_t count); | |
45 | ||
46 | (void) cmdtp; (void) flag; | |
47 | ||
48 | if (argc < 2) | |
49 | return CMD_RET_USAGE; | |
50 | ||
51 | uint32_t addr; | |
52 | uint32_t length = 128; | |
53 | ||
54 | switch (argv[0][3]) { | |
55 | case 'r': | |
56 | readwhat = ram_read_buf; | |
57 | break; | |
58 | case 'e': | |
59 | readwhat = eeprom_read_buf; | |
60 | break; | |
61 | case 'f': | |
62 | readwhat = flash_read_buf; | |
63 | break; | |
64 | default: | |
65 | return CMD_RET_USAGE; | |
66 | } | |
67 | ||
68 | /* Address is specified since argc > 1 */ | |
69 | addr = eval_arg(argv[1], NULL); | |
70 | ||
71 | /* If another parameter, it is the length to display. */ | |
72 | if (argc > 2) | |
73 | length = (uint16_t) eval_arg(argv[2], NULL); | |
74 | ||
75 | /* Print the lines. */ | |
76 | dump_mem(addr, addr, length, readwhat, NULL); | |
77 | ||
78 | return CMD_RET_SUCCESS; | |
79 | } | |
80 | ||
81 | command_ret_t do_eep_cp(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
82 | { | |
83 | uint16_t src, dest, count; | |
84 | int_fast8_t step; | |
85 | ||
86 | (void) cmdtp; | |
87 | (void) flag; | |
88 | ||
89 | if (argc != 4) | |
90 | return CMD_RET_USAGE; | |
91 | ||
92 | src = (size_t) eval_arg(argv[1], NULL); | |
93 | dest = (size_t) eval_arg(argv[2], NULL); | |
94 | count = (size_t) eval_arg(argv[3], NULL); | |
95 | ||
96 | if (src > E2END) { | |
97 | debug("src > EEPROM size: 0x%04x\n", src); | |
98 | return CMD_RET_FAILURE; | |
99 | } | |
100 | if (dest > E2END) { | |
101 | debug("dest > EEPROM size: 0x%04x\n", dest); | |
102 | return CMD_RET_FAILURE; | |
103 | } | |
104 | if (count > E2END+1) { | |
105 | debug("count > EEPROM size: 0x%04x\n", count); | |
106 | return CMD_RET_FAILURE; | |
107 | } | |
108 | if (count == 0) { | |
109 | debug("Zero length?\n"); | |
110 | return CMD_RET_FAILURE; | |
111 | } | |
112 | ||
113 | if (dest > src) { | |
114 | src += count - 1; | |
115 | dest += count - 1; | |
116 | step = -1; | |
117 | } else | |
118 | step = 1; | |
119 | ||
120 | while (count-- > 0) { | |
121 | uint8_t data; | |
122 | data = eeprom_read_byte((uint8_t *) src); | |
123 | eeprom_write_byte((uint8_t *) dest, data); | |
124 | src += step; | |
125 | dest += step; | |
126 | ||
127 | } | |
128 | return CMD_RET_SUCCESS; | |
129 | } | |
130 | ||
131 | ||
132 | /* Modify memory. | |
133 | * | |
134 | * Syntax: | |
135 | * !mm {addr} | |
136 | * !nm {addr} | |
137 | */ | |
138 | ||
139 | static uint8_t *mm_last_addr; | |
140 | ||
141 | static command_ret_t | |
142 | mod_mem_avr(cmd_tbl_t *cmdtp, int incrflag, uint_fast8_t flag, int argc, char * const argv[]) | |
143 | { | |
144 | uint8_t *addr; | |
145 | int nbytes; | |
146 | ||
147 | (void) cmdtp; | |
148 | ||
149 | if (argc != 2) | |
150 | return CMD_RET_USAGE; | |
151 | ||
152 | /* We use the last specified parameters, unless new ones are | |
153 | * entered. | |
154 | */ | |
155 | addr = mm_last_addr; | |
156 | ||
157 | if ((flag & CMD_FLAG_REPEAT) == 0) { | |
158 | /* New command specified. | |
159 | */ | |
160 | ||
161 | /* Address is specified since argc > 1 | |
162 | */ | |
163 | addr = (uint8_t *) (size_t) eval_arg(argv[1], NULL); | |
164 | } | |
165 | ||
166 | /* Print the address, followed by value. Then accept input for | |
167 | * the next value. A non-converted value exits. | |
168 | */ | |
169 | do { | |
170 | uint8_t data = *addr; | |
171 | printf_P(PSTR("%04x: %02x"), addr, data); | |
172 | ||
173 | nbytes = cli_readline(PSTR(" ? "), 0); | |
174 | if (nbytes == 0 || (nbytes == 1 && console_buffer[0] == '-')) { | |
175 | /* <CR> pressed as only input, don't modify current | |
176 | * location and move to next. "-" pressed will go back. | |
177 | */ | |
178 | if (incrflag) | |
179 | addr += nbytes ? -1 : 1; | |
180 | nbytes = 1; | |
181 | ||
182 | } else { | |
183 | char *endp; | |
184 | data = eval_arg(console_buffer, &endp); | |
185 | nbytes = endp - console_buffer; | |
186 | if (nbytes) { | |
187 | *addr = data; | |
188 | if (incrflag) | |
189 | addr++; | |
190 | } | |
191 | } | |
192 | } while (nbytes > 0); | |
193 | ||
194 | mm_last_addr = addr; | |
195 | return CMD_RET_SUCCESS; | |
196 | } | |
197 | ||
198 | ||
199 | command_ret_t do_mem_mm_avr(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
200 | { | |
201 | return mod_mem_avr (cmdtp, 1, flag, argc, argv); | |
202 | } | |
203 | command_ret_t do_mem_nm_avr(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
204 | { | |
205 | return mod_mem_avr (cmdtp, 0, flag, argc, argv); | |
206 | } | |
207 | ||
208 | /*------------------------------------------------------------------------------*/ | |
209 | ||
210 | struct __freelist { | |
211 | size_t sz; | |
212 | struct __freelist *nx; | |
213 | }; | |
214 | ||
215 | extern char *__brkval; /* first location not yet allocated */ | |
216 | extern struct __freelist *__flp; /* freelist pointer (head of freelist) */ | |
217 | ||
218 | #define STACK_POINTER() ((char *)AVR_STACK_POINTER_REG) | |
219 | ||
220 | void | |
221 | printfreelist(const char * title) | |
222 | { | |
223 | struct __freelist *fp1; | |
224 | int i; | |
225 | unsigned int freesum = 0; | |
226 | ||
227 | /* TODO: printf_P */ | |
228 | ||
229 | if (!__flp) { | |
230 | printf("%s no free list\n", title ? title : ""); | |
231 | } else { | |
232 | printf("Free list: %s\n", title ? title : ""); | |
233 | for (i = 0, fp1 = __flp; fp1; i++, fp1 = fp1->nx) { | |
234 | printf(" entry %d @ %04x: size %4u, next ", | |
235 | i, (size_t)fp1, fp1->sz); | |
236 | if (fp1->nx) | |
237 | printf("%04x\n", (size_t)fp1->nx); | |
238 | else | |
239 | printf("NULL\n"); | |
240 | freesum += fp1->sz; | |
241 | } | |
242 | } | |
243 | ||
244 | freesum += (size_t) STACK_POINTER() - __malloc_margin - (size_t) __brkval; | |
245 | ||
246 | printf("SP: %04x, __brkval: %04x, Total free: %04u\n", | |
247 | (size_t) STACK_POINTER(), (size_t) __brkval, freesum); | |
248 | } | |
249 | ||
250 | command_ret_t do_pr_free_avr(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char * const argv[] UNUSED) | |
251 | { | |
252 | printfreelist(NULL); | |
253 | ||
254 | return CMD_RET_SUCCESS; | |
255 | } | |
256 | ||
257 | #endif /* DEBUG */ |