]>
Commit | Line | Data |
---|---|---|
c0abd68b L |
1 | /* |
2 | * (C) Copyright 2015 Leo C. <erbl259-lmu@yahoo.de> | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0+ | |
5 | */ | |
6 | ||
7 | #include "common.h" | |
8 | #include <stdlib.h> | |
9 | #include <ctype.h> | |
10 | #include <string.h> | |
11 | #include <stdbool.h> | |
12 | ||
13 | #include "command.h" | |
14 | #include "env.h" | |
15 | #include "ff.h" | |
16 | #include "con-utils.h" | |
17 | #include "z80-if.h" | |
18 | #include "debug.h" | |
19 | ||
20 | ||
21 | #define RS 128 /* CP/M record size */ | |
22 | ||
23 | /* | |
24 | * Load Routine | |
25 | * | |
26 | * Input: addr = Page Address of load top | |
27 | * len = Length in pages of module to read | |
28 | * | |
29 | */ | |
057817cb | 30 | int load(FIL *File, uint32_t addr, uint8_t len) |
c0abd68b L |
31 | { |
32 | uint8_t buffer[RS]; | |
33 | unsigned int br; /* bytes read */ | |
34 | int res; | |
35 | ||
36 | len *= 2; /* length in records of module */ | |
37 | //debug("## load: addr: 0x%.4X, records: 0x%.4X, (%u)\n", addr, len, len); | |
38 | ||
39 | for (; len; len--) { | |
40 | addr -= RS; | |
41 | res = f_read(File, buffer, RS, &br); | |
42 | if (res || br != RS) { | |
43 | return 1; | |
44 | } | |
45 | ||
46 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
47 | my_puts_P(PSTR("Bus timeout\n")); | |
48 | return 2; | |
49 | } | |
50 | z80_write_block(buffer, addr, RS); | |
51 | z80_bus_cmd(Release); | |
52 | //debug("## written: 0x%.4X\n", addr); | |
53 | } | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
ad9bc17c | 58 | #pragma GCC diagnostic ignored "-Wmaybe-uninitialized" |
c0abd68b L |
59 | |
60 | command_ret_t do_loadcpm3(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
61 | { | |
62 | uint16_t mem_top; | |
63 | uint8_t res_len; | |
64 | uint16_t bank_top; | |
65 | uint8_t bank_len; | |
057817cb L |
66 | uint16_t osentry_addr = 0; |
67 | uint32_t common_base, banked_base; | |
c0abd68b | 68 | char *fname; |
c0abd68b | 69 | FIL File; |
057817cb L |
70 | /* TODO: put CONFIG_CPM3_SYSFILE in flash */ |
71 | char default_fname[] = CONFIG_CPM3_SYSFILE; | |
c0abd68b L |
72 | unsigned int br; /* bytes read */ |
73 | uint8_t buffer[RS]; | |
74 | int res; | |
75 | ||
76 | (void) cmdtp; (void) flag; | |
77 | ||
78 | ||
057817cb L |
79 | common_base = getenv_ulong(PSTR(ENV_CPM3_COMMON_BASE), 16, |
80 | CONFIG_CPM3_COMMON_BASE); | |
81 | banked_base = getenv_ulong(PSTR(ENV_CPM3_BANKED_BASE), 16, | |
82 | CONFIG_CPM3_BANKED_BASE); | |
c0abd68b | 83 | |
057817cb L |
84 | if (argc > 3) |
85 | banked_base = strtoul(argv[3], NULL, 16); | |
86 | if (argc > 2) | |
98aac4d0 | 87 | common_base = strtoul(argv[2], NULL, 16); |
c0abd68b | 88 | |
057817cb | 89 | fname = getenv(PSTR(ENV_CPM3_SYSFILE)); |
98aac4d0 L |
90 | if (argc > 1) { |
91 | fname = argv[1]; | |
c0abd68b | 92 | } |
c0abd68b L |
93 | if (fname == NULL || *fname == '\0') |
94 | fname = default_fname; | |
95 | ||
bbd45c46 | 96 | res = f_open(&File, fname, FA_READ ); |
c0abd68b L |
97 | if (res) { |
98 | printf_P(PSTR("Error: failed to open '%s'\n"), fname); | |
c0abd68b L |
99 | return CMD_RET_FAILURE; |
100 | } | |
101 | ||
102 | printf_P(PSTR("Loading: '%s'...\n"), fname); | |
103 | ||
104 | /* read the load record */ | |
105 | res = f_read(&File, buffer, RS, &br); | |
106 | if (res || br != RS) | |
107 | goto out; | |
108 | ||
109 | mem_top = buffer[0] << 8; | |
110 | res_len = buffer[1]; | |
111 | bank_top = buffer[2] << 8; | |
112 | bank_len = buffer[3]; | |
057817cb | 113 | osentry_addr = buffer[4] + (buffer[5] << 8); |
c0abd68b L |
114 | |
115 | /* read display info */ | |
116 | res = f_read(&File, buffer, RS, &br); | |
117 | if (res || br != RS) | |
118 | goto out; | |
119 | ||
120 | /* print the info */ | |
121 | buffer[RS-1] = '$'; | |
122 | uint8_t *p = memchr(buffer, '$', RS); | |
123 | *p = '\0'; | |
124 | my_puts((char *)buffer); | |
125 | ||
126 | /* Main System Load */ | |
127 | ||
128 | /* Load Common Portion of System */ | |
057817cb | 129 | if ((res = load(&File, common_base + mem_top, res_len)) != 0) |
c0abd68b L |
130 | goto out; |
131 | ||
132 | /* Load Banked Portion of System */ | |
057817cb | 133 | res = load(&File, banked_base + bank_top, bank_len); |
c0abd68b L |
134 | |
135 | out: | |
136 | f_close(&File); | |
c0abd68b L |
137 | |
138 | if (res) { | |
139 | printf_P(PSTR("Error: failed to read '%s'\n"), fname); | |
140 | return CMD_RET_FAILURE; | |
141 | } else { | |
057817cb L |
142 | if (res_len != 0) { |
143 | if (osentry_addr + common_base > 0xffff) { | |
144 | z80_bus_cmd(Request); | |
145 | if (z80_read(osentry_addr + common_base) == 0xc3) { | |
146 | osentry_addr = z80_read(osentry_addr+common_base+1) + | |
147 | (z80_read(osentry_addr + common_base+2) << 8); | |
148 | } | |
149 | z80_bus_cmd(Release); | |
150 | if (banked_base + osentry_addr > 0xffff) | |
151 | osentry_addr = 0; | |
152 | } | |
153 | setenv_hex(PSTR(ENV_STARTADDRESS), osentry_addr); | |
154 | } | |
c0abd68b L |
155 | printf_P(PSTR("Loaded: Resident: ")); |
156 | if (res_len != 0) | |
057817cb L |
157 | printf_P(PSTR("0x%.5lX-0x%.5lX, "), |
158 | (common_base + mem_top) - res_len*256, | |
159 | (common_base + mem_top) - 1); | |
c0abd68b L |
160 | else |
161 | printf_P(PSTR(" - ")); | |
162 | printf_P(PSTR("Banked: ")); | |
163 | if (bank_len != 0) | |
057817cb L |
164 | printf_P(PSTR("0x%.5lX-0x%.5lX\n"), |
165 | (banked_base + bank_top) - bank_len*256, | |
166 | (banked_base + bank_top) - 1); | |
c0abd68b L |
167 | else |
168 | printf_P(PSTR(" - \n")); | |
169 | ||
170 | return CMD_RET_SUCCESS; | |
171 | } | |
172 | } |