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32#include <common.h>
33#include <command.h>
34#include <asm/io.h>
35
36#include "ngpixis.h"
37
38static u8 __pixis_read(unsigned int reg)
39{
40 void *p = (void *)PIXIS_BASE;
41
42 return in_8(p + reg);
43}
44u8 pixis_read(unsigned int reg) __attribute__((weak, alias("__pixis_read")));
45
46static void __pixis_write(unsigned int reg, u8 value)
47{
48 void *p = (void *)PIXIS_BASE;
49
50 out_8(p + reg, value);
51}
52void pixis_write(unsigned int reg, u8 value)
53 __attribute__((weak, alias("__pixis_write")));
54
55
56
57
58void __pixis_reset(void)
59{
60 PIXIS_WRITE(rst, 0);
61
62 while (1);
63}
64void pixis_reset(void) __attribute__((weak, alias("__pixis_reset")));
65
66
67
68
69void __pixis_bank_reset(void)
70{
71 PIXIS_WRITE(vctl, 0);
72 PIXIS_WRITE(vctl, 1);
73
74 while (1);
75}
76void pixis_bank_reset(void) __attribute__((weak, alias("__pixis_bank_reset")));
77
78
79
80
81void __clear_altbank(void)
82{
83 u8 reg;
84
85
86
87
88
89 reg = PIXIS_READ(s[PIXIS_LBMAP_SWITCH - 1].en);
90 reg &= ~PIXIS_LBMAP_MASK;
91 PIXIS_WRITE(s[PIXIS_LBMAP_SWITCH - 1].en, reg);
92}
93void clear_altbank(void) __attribute__((weak, alias("__clear_altbank")));
94
95
96
97
98void __set_altbank(void)
99{
100 u8 reg;
101
102
103
104 reg = PIXIS_READ(s[PIXIS_LBMAP_SWITCH - 1].sw);
105 reg = (reg & ~PIXIS_LBMAP_MASK) | PIXIS_LBMAP_ALTBANK;
106 PIXIS_WRITE(s[PIXIS_LBMAP_SWITCH - 1].sw, reg);
107
108
109
110
111
112 reg = PIXIS_READ(s[PIXIS_LBMAP_SWITCH - 1].en);
113 reg |= PIXIS_LBMAP_MASK;
114 PIXIS_WRITE(s[PIXIS_LBMAP_SWITCH - 1].en, reg);
115}
116void set_altbank(void) __attribute__((weak, alias("__set_altbank")));
117
118#ifdef DEBUG
119static void pixis_dump_regs(void)
120{
121 unsigned int i;
122
123 printf("id=%02x\n", PIXIS_READ(id));
124 printf("arch=%02x\n", PIXIS_READ(arch));
125 printf("scver=%02x\n", PIXIS_READ(scver));
126 printf("csr=%02x\n", PIXIS_READ(csr));
127 printf("rst=%02x\n", PIXIS_READ(rst));
128 printf("aux=%02x\n", PIXIS_READ(aux));
129 printf("spd=%02x\n", PIXIS_READ(spd));
130 printf("brdcfg0=%02x\n", PIXIS_READ(brdcfg0));
131 printf("brdcfg1=%02x\n", PIXIS_READ(brdcfg1));
132 printf("addr=%02x\n", PIXIS_READ(addr));
133 printf("data=%02x\n", PIXIS_READ(data));
134 printf("led=%02x\n", PIXIS_READ(led));
135 printf("vctl=%02x\n", PIXIS_READ(vctl));
136 printf("vstat=%02x\n", PIXIS_READ(vstat));
137 printf("vcfgen0=%02x\n", PIXIS_READ(vcfgen0));
138 printf("ocmcsr=%02x\n", PIXIS_READ(ocmcsr));
139 printf("ocmmsg=%02x\n", PIXIS_READ(ocmmsg));
140 printf("gmdbg=%02x\n", PIXIS_READ(gmdbg));
141 printf("sclk=%02x%02x%02x\n",
142 PIXIS_READ(sclk[0]), PIXIS_READ(sclk[1]), PIXIS_READ(sclk[2]));
143 printf("dclk=%02x%02x%02x\n",
144 PIXIS_READ(dclk[0]), PIXIS_READ(dclk[1]), PIXIS_READ(dclk[2]));
145 printf("watch=%02x\n", PIXIS_READ(watch));
146
147 for (i = 0; i < 8; i++) {
148 printf("SW%u=%02x/%02x ", i + 1,
149 PIXIS_READ(s[i].sw), PIXIS_READ(s[i].en));
150 }
151 putc('\n');
152}
153#endif
154
155void pixis_sysclk_set(unsigned long sysclk)
156{
157 unsigned long freq_word;
158 u8 sclk0, sclk1, sclk2;
159
160 freq_word = ics307_sysclk_calculator(sysclk);
161 sclk2 = freq_word & 0xff;
162 sclk1 = (freq_word >> 8) & 0xff;
163 sclk0 = (freq_word >> 16) & 0xff;
164
165
166 PIXIS_WRITE(vcfgen0, 0x01);
167
168
169 PIXIS_WRITE(sclk[0], sclk0);
170 PIXIS_WRITE(sclk[1], sclk1);
171 PIXIS_WRITE(sclk[2], sclk2);
172}
173
174int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
175{
176 unsigned int i;
177 unsigned long sysclk;
178 char *p_altbank = NULL;
179#ifdef DEBUG
180 char *p_dump = NULL;
181#endif
182 char *unknown_param = NULL;
183
184
185
186 if (argc <= 1)
187 pixis_reset();
188
189 for (i = 1; i < argc; i++) {
190 if (strcmp(argv[i], "altbank") == 0) {
191 p_altbank = argv[i];
192 continue;
193 }
194
195#ifdef DEBUG
196 if (strcmp(argv[i], "dump") == 0) {
197 p_dump = argv[i];
198 continue;
199 }
200#endif
201 if (strcmp(argv[i], "sysclk") == 0) {
202 sysclk = simple_strtoul(argv[i + 1], NULL, 0);
203 i += 1;
204 pixis_sysclk_set(sysclk);
205 continue;
206 }
207
208 unknown_param = argv[i];
209 }
210
211 if (unknown_param) {
212 printf("Invalid option: %s\n", unknown_param);
213 return 1;
214 }
215
216#ifdef DEBUG
217 if (p_dump) {
218 pixis_dump_regs();
219
220
221 return 0;
222 }
223#endif
224
225 if (p_altbank)
226 set_altbank();
227 else
228 clear_altbank();
229
230 pixis_bank_reset();
231
232
233 return 0;
234}
235
236#ifdef CONFIG_SYS_LONGHELP
237static char pixis_help_text[] =
238 "- hard reset to default bank\n"
239 "pixis_reset altbank - reset to alternate bank\n"
240#ifdef DEBUG
241 "pixis_reset dump - display the PIXIS registers\n"
242#endif
243 "pixis_reset sysclk <SYSCLK_freq> - reset with SYSCLK frequency(KHz)\n";
244#endif
245
246U_BOOT_CMD(
247 pixis_reset, CONFIG_SYS_MAXARGS, 1, pixis_reset_cmd,
248 "Reset the board using the FPGA sequencer", pixis_help_text
249 );
250