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1 | /* | |
2 | * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de> | |
3 | * | |
4 | * (C) Copyright 2000-2003 | |
5 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
6 | * | |
7 | * SPDX-License-Identifier: GPL-2.0 | |
8 | */ | |
9 | ||
10 | /* | |
11 | * Misc boot support | |
12 | */ | |
13 | #include "common.h" | |
14 | #include <stdlib.h> | |
15 | #include <ctype.h> | |
16 | #include <util/atomic.h> | |
17 | ||
18 | #include "command.h" | |
19 | #include "cli_readline.h" | |
20 | #include "cli.h" | |
21 | #include "env.h" | |
22 | #include "con-utils.h" | |
23 | #include "z80-if.h" | |
24 | #include "z180-serv.h" | |
25 | #include "debug.h" | |
26 | ||
27 | /* ugly hack to get Z180 loadfile into flash memory */ | |
28 | #define const const FLASH | |
29 | #include "../z180/hdrom.h" | |
30 | #undef const | |
31 | ||
32 | ||
33 | ||
34 | static void z80_load_mem(void) | |
35 | { | |
36 | unsigned sec = 0; | |
37 | uint32_t sec_base = hdrom_start; | |
38 | ||
39 | printf_P(PSTR("Loading Z180 memory... \n")); | |
40 | ||
41 | while (sec < hdrom_sections) { | |
42 | printf_P(PSTR(" From: 0x%.5lX to: 0x%.5lX (%5li bytes)\n"), | |
43 | hdrom_address[sec], | |
44 | hdrom_address[sec]+hdrom_length_of_sections[sec] - 1, | |
45 | hdrom_length_of_sections[sec]); | |
46 | ||
47 | z80_write_block_P((const FLASH unsigned char *) &hdrom[sec_base], /* src */ | |
48 | hdrom_address[sec], /* dest */ | |
49 | hdrom_length_of_sections[sec]); /* len */ | |
50 | sec_base+=hdrom_length_of_sections[sec]; | |
51 | sec++; | |
52 | } | |
53 | } | |
54 | ||
55 | command_ret_t do_loadf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
56 | { | |
57 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
58 | ||
59 | if (z80_bus_state() & ZST_RUNNING) { | |
60 | my_puts_P(PSTR("Can't load while CPU is running!\n")); | |
61 | return CMD_RET_FAILURE; | |
62 | } | |
63 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
64 | my_puts_P(PSTR("Bus timeout\n")); | |
65 | return CMD_RET_FAILURE; | |
66 | } | |
67 | z80_load_mem(); | |
68 | z80_bus_cmd(Release); | |
69 | ||
70 | return CMD_RET_SUCCESS; | |
71 | } | |
72 | ||
73 | ||
74 | command_ret_t do_busreq_pulse(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
75 | { | |
76 | uint16_t count=1; | |
77 | ||
78 | (void) cmdtp; (void) flag; | |
79 | ||
80 | if (!(z80_bus_state() & ZST_RUNNING)) { | |
81 | printf_P(PSTR("## CPU is not running!\n")); | |
82 | return CMD_RET_FAILURE; | |
83 | } | |
84 | ||
85 | if (argc > 1) | |
86 | count = (uint16_t) strtoul(argv[1], NULL, 16); | |
87 | ||
88 | z80_bus_cmd(Request); | |
89 | while (count--) | |
90 | z80_bus_cmd(M_Cycle); | |
91 | ||
92 | return CMD_RET_SUCCESS; | |
93 | } | |
94 | ||
95 | ||
96 | command_ret_t do_go(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
97 | { | |
98 | uint32_t addr; | |
99 | ||
100 | (void) cmdtp; (void) flag; | |
101 | ||
102 | if (argc < 2) | |
103 | return CMD_RET_USAGE; | |
104 | addr = strtoul(argv[1], NULL, 16); | |
105 | if (addr >= (1UL<<16)) { | |
106 | printf_P(PSTR("## Startaddress 0x%05lx too high.\n" | |
107 | " (Out of logical address space (0x00000-0x0ffff))\n"), | |
108 | addr); | |
109 | return CMD_RET_FAILURE; | |
110 | } | |
111 | ||
112 | if (z80_bus_state() & ZST_RUNNING) { | |
113 | printf_P(PSTR("## CPU allready running!\n")); | |
114 | return CMD_RET_FAILURE; | |
115 | } | |
116 | ||
117 | printf_P(PSTR("## Starting application at 0x%04lx ...\n"), addr); | |
118 | ||
119 | if (addr != 0) { | |
120 | uint8_t tmp[3]; | |
121 | ||
122 | z80_bus_cmd(Request); | |
123 | z80_read_block (tmp, 0, 3); | |
124 | z80_write(0, 0xc3); | |
125 | z80_write(1, addr); | |
126 | z80_write(2, (addr >> 8)); | |
127 | ||
128 | z80_bus_cmd(Run); | |
129 | z80_bus_cmd(M_Cycle); | |
130 | z80_bus_cmd(M_Cycle); | |
131 | z80_write_block(tmp, 0, 3); | |
132 | } else | |
133 | z80_bus_cmd(Run); | |
134 | ||
135 | z80_bus_cmd(Release); | |
136 | ||
137 | return CMD_RET_SUCCESS; | |
138 | } | |
139 | ||
140 | static | |
141 | void reset_cpu(bus_cmd_t mode) | |
142 | { | |
143 | restart_z180_serv(); | |
144 | z80_bus_cmd(mode); | |
145 | } | |
146 | ||
147 | ||
148 | command_ret_t do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
149 | { | |
150 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
151 | ||
152 | printf_P(PSTR("CPU now in reset state.\n")); | |
153 | ||
154 | reset_cpu(Reset); | |
155 | return CMD_RET_SUCCESS; | |
156 | } | |
157 | ||
158 | command_ret_t do_restart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
159 | { | |
160 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
161 | ||
162 | reset_cpu(Restart); | |
163 | ||
164 | return CMD_RET_SUCCESS; | |
165 | } | |
166 | ||
167 | static | |
168 | void print_con_usage(char esc) | |
169 | { printf_P(PSTR("\n" | |
170 | "------------------------------------------------\n" | |
171 | " ?,H - This Help\n" | |
172 | " Q,X - Return to command line\n" | |
173 | " R - Reset (Restart) CPU\n" | |
174 | " : - Execute monitor command\n" | |
175 | " \\ - code input:\n" | |
176 | " \\nnn 3 decimal digits character code\n" | |
177 | " \\Xhh 2 hexadecimal digits character code\n" | |
178 | " ^%c - (Escape char) Type again to send itself\n" | |
179 | "key>" | |
180 | ), esc + 0x40); | |
181 | } | |
182 | ||
183 | command_ret_t do_console(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
184 | { | |
185 | int ch; | |
186 | uint8_t pending; | |
187 | // uint8_t help_prompt = 0; | |
188 | uint8_t code = 0; | |
189 | uint8_t state = 0; | |
190 | char esc_char = (char) getenv_ulong(PSTR(ENV_ESC_CHAR), 16, CONFIG_ESC_CHAR); | |
191 | ||
192 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
193 | ||
194 | printf_P(PSTR("Connecting to CPU. Escape character is '^%c'.\n"), | |
195 | esc_char + 0x40); | |
196 | ||
197 | while (1) { | |
198 | ||
199 | ATOMIC_BLOCK(ATOMIC_FORCEON) { | |
200 | pending = (Stat & S_CON_PENDING) != 0; | |
201 | Stat &= ~S_CON_PENDING; | |
202 | } | |
203 | if (pending) { | |
204 | uint8_t count = 100; | |
205 | while ((ch = z80_memfifo_getc(fifo_conout)) >= 0 && --count) | |
206 | putchar(ch); | |
207 | } | |
208 | ||
209 | if ((ch = my_getchar(0)) >= 0) { | |
210 | switch (state) { | |
211 | case 0: | |
212 | if (ch == esc_char) { | |
213 | state = 1; | |
214 | /* TODO: Timer starten */ | |
215 | } else { | |
216 | z80_memfifo_putc(fifo_conin, ch); | |
217 | } | |
218 | break; | |
219 | case 2: | |
220 | printf_P(PSTR("\n" | |
221 | "------------------------------------------------\n")); | |
222 | case 1: | |
223 | state = 0; | |
224 | switch (toupper(ch)) { | |
225 | ||
226 | case '?': | |
227 | case 'H': | |
228 | print_con_usage(esc_char); | |
229 | state = 2; | |
230 | break; | |
231 | ||
232 | case 'R': | |
233 | reset_cpu(Restart); | |
234 | break; | |
235 | ||
236 | case 'X': | |
237 | case 'Q': | |
238 | printf_P(PSTR("\n")); | |
239 | goto quit; | |
240 | break; | |
241 | ||
242 | case ':': | |
243 | putchar('\n'); | |
244 | int cmdlen = cli_readline(PSTR(": "), 1); | |
245 | if (cmdlen > 0) | |
246 | run_command(console_buffer, 0); | |
247 | break; | |
248 | ||
249 | case '\\': | |
250 | code = 0; | |
251 | state = 3; | |
252 | break; | |
253 | ||
254 | default: | |
255 | if (ch == esc_char) | |
256 | z80_memfifo_putc(fifo_conin, ch); | |
257 | break; | |
258 | } | |
259 | break; | |
260 | case 3: | |
261 | if (toupper(ch) == 'X') { | |
262 | state = 6; | |
263 | break; | |
264 | } | |
265 | /* fall thru */ | |
266 | case 4: | |
267 | case 5: | |
268 | if (isdigit(ch)) { | |
269 | code = code * 10 + ch - '0'; | |
270 | state++; | |
271 | } else { | |
272 | if (state > 3) | |
273 | z80_memfifo_putc(fifo_conin, code); | |
274 | z80_memfifo_putc(fifo_conin, ch); | |
275 | state = 0; | |
276 | } | |
277 | if (state > 5) { | |
278 | z80_memfifo_putc(fifo_conin, code); | |
279 | state = 0; | |
280 | } | |
281 | break; | |
282 | case 6: | |
283 | case 7: | |
284 | if (isxdigit(ch)) { | |
285 | ch = toupper(ch); | |
286 | if (ch >= 'A') | |
287 | ch -= 'A' - 10; | |
288 | code = code * 16 + ch - '0'; | |
289 | state++; | |
290 | }else { | |
291 | if (state > 6) | |
292 | z80_memfifo_putc(fifo_conin, code); | |
293 | z80_memfifo_putc(fifo_conin, ch); | |
294 | state = 0; | |
295 | } | |
296 | if (state > 7) { | |
297 | z80_memfifo_putc(fifo_conin, code); | |
298 | state = 0; | |
299 | } | |
300 | break; | |
301 | } | |
302 | } | |
303 | } | |
304 | quit: | |
305 | return CMD_RET_SUCCESS; | |
306 | } |