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35edb766 L |
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 | */ | |
534e1dfc L |
9 | |
10 | /* | |
11 | * Misc boot support | |
12 | */ | |
13 | #include "common.h" | |
14 | #include <stdlib.h> | |
8a7decea | 15 | #include <ctype.h> |
89adce76 | 16 | #include <util/atomic.h> |
534e1dfc L |
17 | |
18 | #include "command.h" | |
612a6965 | 19 | #include "env.h" |
89adce76 | 20 | #include "con-utils.h" |
534e1dfc | 21 | #include "z80-if.h" |
89adce76 | 22 | #include "z180-serv.h" |
8a7decea | 23 | #include "debug.h" |
534e1dfc L |
24 | |
25 | /* ugly hack to get Z180 loadfile into flash memory */ | |
26 | #define const const FLASH | |
27 | #include "../z180/hdrom.h" | |
28 | #undef const | |
29 | ||
30 | ||
31 | ||
32 | static void z80_load_mem(void) | |
33 | { | |
34 | unsigned sec = 0; | |
35 | uint32_t sec_base = hdrom_start; | |
36 | ||
37 | printf_P(PSTR("Loading Z180 memory... \n")); | |
38 | ||
39 | while (sec < hdrom_sections) { | |
40 | printf_P(PSTR(" From: 0x%.5lX to: 0x%.5lX (%5li bytes)\n"), | |
41 | hdrom_address[sec], | |
42 | hdrom_address[sec]+hdrom_length_of_sections[sec] - 1, | |
43 | hdrom_length_of_sections[sec]); | |
44 | ||
ea6971b8 | 45 | z80_write_block_P((const FLASH unsigned char *) &hdrom[sec_base], /* src */ |
41d36f28 | 46 | hdrom_address[sec], /* dest */ |
534e1dfc | 47 | hdrom_length_of_sections[sec]); /* len */ |
534e1dfc L |
48 | sec_base+=hdrom_length_of_sections[sec]; |
49 | sec++; | |
50 | } | |
51 | } | |
52 | ||
d0581f88 | 53 | command_ret_t do_loadf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
534e1dfc L |
54 | { |
55 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
56 | ||
6035a17b | 57 | if (z80_bus_state() & ZST_RUNNING) { |
612a6965 | 58 | my_puts_P(PSTR("Can't load while CPU is running!\n")); |
6035a17b | 59 | return CMD_RET_FAILURE; |
534e1dfc | 60 | } |
612a6965 L |
61 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
62 | my_puts_P(PSTR("Bus timeout\n")); | |
63 | return CMD_RET_FAILURE; | |
64 | } | |
534e1dfc | 65 | z80_load_mem(); |
612a6965 | 66 | z80_bus_cmd(Release); |
6035a17b | 67 | |
d0581f88 | 68 | return CMD_RET_SUCCESS; |
534e1dfc L |
69 | } |
70 | ||
71 | ||
d0581f88 | 72 | command_ret_t do_busreq_pulse(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
534e1dfc | 73 | { |
f338df2a | 74 | uint16_t count=1; |
534e1dfc | 75 | |
f338df2a | 76 | (void) cmdtp; (void) flag; |
534e1dfc | 77 | |
6035a17b | 78 | if (!(z80_bus_state() & ZST_RUNNING)) { |
f338df2a | 79 | printf_P(PSTR("## CPU is not running!\n")); |
d0581f88 | 80 | return CMD_RET_FAILURE; |
534e1dfc L |
81 | } |
82 | ||
f338df2a L |
83 | if (argc > 1) |
84 | count = (uint16_t) strtoul(argv[2], NULL, 16); | |
85 | ||
62f624d3 | 86 | z80_bus_cmd(Request); |
f338df2a | 87 | while (count--) |
62f624d3 | 88 | z80_bus_cmd(M_Cycle); |
534e1dfc | 89 | |
d0581f88 | 90 | return CMD_RET_SUCCESS; |
f338df2a L |
91 | } |
92 | ||
93 | ||
d0581f88 | 94 | command_ret_t do_go(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
f338df2a L |
95 | { |
96 | uint32_t addr; | |
97 | ||
98 | (void) cmdtp; (void) flag; | |
6035a17b | 99 | |
f338df2a L |
100 | if (argc < 2) |
101 | return CMD_RET_USAGE; | |
102 | addr = strtoul(argv[1], NULL, 16); | |
103 | if (addr >= (1UL<<16)) { | |
534e1dfc L |
104 | printf_P(PSTR("## Startaddress 0x%05lx too high.\n" |
105 | " (Out of logical address space (0x00000-0x0ffff))\n"), | |
106 | addr); | |
d0581f88 | 107 | return CMD_RET_FAILURE; |
6035a17b | 108 | } |
f338df2a | 109 | |
6035a17b | 110 | if (z80_bus_state() & ZST_RUNNING) { |
f338df2a | 111 | printf_P(PSTR("## CPU allready running!\n")); |
d0581f88 | 112 | return CMD_RET_FAILURE; |
534e1dfc L |
113 | } |
114 | ||
f338df2a L |
115 | printf_P(PSTR("## Starting application at 0x%04lx ...\n"), addr); |
116 | ||
117 | if (addr != 0) { | |
118 | uint8_t tmp[3]; | |
119 | uint_fast8_t i; | |
6035a17b | 120 | |
62f624d3 | 121 | z80_bus_cmd(Request); |
f338df2a L |
122 | for (i = 0; i < 3; i++) |
123 | tmp[i] = z80_read(i); | |
124 | z80_write(0, 0xc3); | |
125 | z80_write(1, addr); | |
126 | z80_write(2, (addr >> 8)); | |
127 | ||
62f624d3 L |
128 | z80_bus_cmd(Run); |
129 | z80_bus_cmd(M_Cycle); | |
130 | z80_bus_cmd(M_Cycle); | |
f338df2a L |
131 | for (i = 0; i < 3; i++) |
132 | z80_write(i, tmp[i]); | |
133 | } else | |
62f624d3 | 134 | z80_bus_cmd(Run); |
6035a17b | 135 | |
62f624d3 | 136 | z80_bus_cmd(Release); |
f338df2a | 137 | |
d0581f88 | 138 | return CMD_RET_SUCCESS; |
534e1dfc L |
139 | } |
140 | ||
8a7decea L |
141 | static |
142 | void reset_cpu(bus_cmd_t mode) | |
143 | { | |
144 | restart_z180_serv(); | |
145 | z80_bus_cmd(mode); | |
146 | } | |
147 | ||
148 | ||
d0581f88 | 149 | command_ret_t do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
534e1dfc L |
150 | { |
151 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
152 | ||
612a6965 | 153 | printf_P(PSTR("CPU now in reset state.\n")); |
534e1dfc | 154 | |
8a7decea | 155 | reset_cpu(Reset); |
d0581f88 | 156 | return CMD_RET_SUCCESS; |
534e1dfc L |
157 | } |
158 | ||
d0581f88 | 159 | command_ret_t do_restart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
534e1dfc L |
160 | { |
161 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
162 | ||
8a7decea | 163 | reset_cpu(Restart); |
534e1dfc | 164 | |
d0581f88 | 165 | return CMD_RET_SUCCESS; |
534e1dfc L |
166 | } |
167 | ||
8a7decea L |
168 | static |
169 | void print_con_usage(char esc) | |
170 | { printf_P(PSTR("\n" | |
171 | "------------------------------------------------\n" | |
172 | " ?,H - This Help\n" | |
173 | " R - Reset (Restart) CPU\n" | |
174 | " Q,X - Return to command line\n" | |
612a6965 L |
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" | |
8a7decea L |
179 | "key>" |
180 | ), esc + 0x40); | |
181 | } | |
89adce76 L |
182 | |
183 | command_ret_t do_console(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
184 | { | |
185 | int ch; | |
8a7decea L |
186 | uint8_t pending; |
187 | // uint8_t help_prompt = 0; | |
188 | uint8_t code = 0; | |
189 | uint8_t state = 0; | |
612a6965 | 190 | char esc_char = (char) getenv_ulong(PSTR(ENV_ESC_CHAR), 16, CONFIG_ESC_CHAR); |
ea6971b8 | 191 | |
89adce76 L |
192 | (void) cmdtp; (void) flag; (void) argc; (void) argv; |
193 | ||
194 | ||
195 | while (1) { | |
196 | ||
8a7decea | 197 | ATOMIC_BLOCK(ATOMIC_FORCEON) { |
89adce76 L |
198 | pending = (Stat & S_CON_PENDING) != 0; |
199 | Stat &= ~S_CON_PENDING; | |
200 | } | |
3ad4143b L |
201 | if (pending) { |
202 | uint8_t count = 100; | |
203 | while ((ch = z80_memfifo_getc(fifo_conout)) >= 0 && --count) | |
89adce76 | 204 | putchar(ch); |
3ad4143b | 205 | } |
89adce76 L |
206 | |
207 | if ((ch = my_getchar(0)) >= 0) { | |
208 | switch (state) { | |
209 | case 0: | |
612a6965 | 210 | if (ch == esc_char) { |
89adce76 L |
211 | state = 1; |
212 | /* TODO: Timer starten */ | |
213 | } else { | |
214 | z80_memfifo_putc(fifo_conin, ch); | |
ea6971b8 | 215 | } |
89adce76 | 216 | break; |
8a7decea L |
217 | case 2: |
218 | printf_P(PSTR("\n" | |
219 | "------------------------------------------------\n")); | |
89adce76 | 220 | case 1: |
8a7decea L |
221 | state = 0; |
222 | switch (toupper(ch)) { | |
89adce76 | 223 | |
8a7decea L |
224 | case '?': |
225 | case 'H': | |
612a6965 | 226 | print_con_usage(esc_char); |
8a7decea | 227 | state = 2; |
89adce76 L |
228 | break; |
229 | ||
8a7decea L |
230 | case 'R': |
231 | reset_cpu(Restart); | |
89adce76 L |
232 | break; |
233 | ||
8a7decea | 234 | case 'X': |
89adce76 | 235 | case 'Q': |
889202c4 | 236 | printf_P(PSTR("\n")); |
89adce76 L |
237 | goto quit; |
238 | break; | |
239 | ||
8a7decea L |
240 | case '\\': |
241 | code = 0; | |
242 | state = 3; | |
243 | break; | |
244 | ||
8a7decea | 245 | default: |
612a6965 L |
246 | if (ch == esc_char) |
247 | z80_memfifo_putc(fifo_conin, ch); | |
8a7decea L |
248 | break; |
249 | } | |
250 | break; | |
251 | case 3: | |
252 | if (toupper(ch) == 'X') { | |
253 | state = 6; | |
254 | break; | |
255 | } | |
256 | /* fall thru */ | |
257 | case 4: | |
258 | case 5: | |
259 | if (isdigit(ch)) { | |
260 | code = code * 10 + ch - '0'; | |
261 | state++; | |
262 | } | |
263 | if (state > 5) { | |
264 | z80_memfifo_putc(fifo_conin, code); | |
265 | state = 0; | |
266 | } | |
267 | break; | |
268 | case 6: | |
269 | case 7: | |
270 | if (isxdigit(ch)) { | |
271 | ch = toupper(ch); | |
272 | if (ch >= 'A') | |
273 | ch -= 'A' - 10; | |
274 | code = code * 16 + ch - '0'; | |
275 | state++; | |
276 | } | |
277 | if (state > 7) { | |
278 | z80_memfifo_putc(fifo_conin, code); | |
279 | state = 0; | |
89adce76 | 280 | } |
89adce76 L |
281 | break; |
282 | } | |
283 | } | |
89adce76 L |
284 | } |
285 | quit: | |
89adce76 L |
286 | return CMD_RET_SUCCESS; |
287 | } |