1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2007
4 * Eran Liberty, Extricom , eran.liberty@gmail.com
5 */
6
7 #include <common.h> /* core U-Boot definitions */
8 #include <altera.h>
9
10 int StratixII_ps_fpp_load (Altera_desc * desc, void *buf, size_t bsize,
11 int isSerial, int isSecure);
12 int StratixII_ps_fpp_dump (Altera_desc * desc, void *buf, size_t bsize);
13
14 /****************************************************************/
15 /* Stratix II Generic Implementation */
StratixII_load(Altera_desc * desc,void * buf,size_t bsize)16 int StratixII_load (Altera_desc * desc, void *buf, size_t bsize)
17 {
18 int ret_val = FPGA_FAIL;
19
20 switch (desc->iface) {
21 case passive_serial:
22 ret_val = StratixII_ps_fpp_load (desc, buf, bsize, 1, 0);
23 break;
24 case fast_passive_parallel:
25 ret_val = StratixII_ps_fpp_load (desc, buf, bsize, 0, 0);
26 break;
27 case fast_passive_parallel_security:
28 ret_val = StratixII_ps_fpp_load (desc, buf, bsize, 0, 1);
29 break;
30
31 /* Add new interface types here */
32 default:
33 printf ("%s: Unsupported interface type, %d\n", __FUNCTION__,
34 desc->iface);
35 }
36 return ret_val;
37 }
38
StratixII_dump(Altera_desc * desc,void * buf,size_t bsize)39 int StratixII_dump (Altera_desc * desc, void *buf, size_t bsize)
40 {
41 int ret_val = FPGA_FAIL;
42
43 switch (desc->iface) {
44 case passive_serial:
45 case fast_passive_parallel:
46 case fast_passive_parallel_security:
47 ret_val = StratixII_ps_fpp_dump (desc, buf, bsize);
48 break;
49 /* Add new interface types here */
50 default:
51 printf ("%s: Unsupported interface type, %d\n", __FUNCTION__,
52 desc->iface);
53 }
54 return ret_val;
55 }
56
StratixII_info(Altera_desc * desc)57 int StratixII_info (Altera_desc * desc)
58 {
59 return FPGA_SUCCESS;
60 }
61
StratixII_ps_fpp_dump(Altera_desc * desc,void * buf,size_t bsize)62 int StratixII_ps_fpp_dump (Altera_desc * desc, void *buf, size_t bsize)
63 {
64 printf ("Stratix II Fast Passive Parallel dump is not implemented\n");
65 return FPGA_FAIL;
66 }
67
StratixII_ps_fpp_load(Altera_desc * desc,void * buf,size_t bsize,int isSerial,int isSecure)68 int StratixII_ps_fpp_load (Altera_desc * desc, void *buf, size_t bsize,
69 int isSerial, int isSecure)
70 {
71 altera_board_specific_func *fns;
72 int cookie;
73 int ret_val = FPGA_FAIL;
74 int bytecount;
75 char *buff = buf;
76 int i;
77
78 if (!desc) {
79 printf ("%s(%d) Altera_desc missing\n", __FUNCTION__, __LINE__);
80 return FPGA_FAIL;
81 }
82 if (!buff) {
83 printf ("%s(%d) buffer is missing\n", __FUNCTION__, __LINE__);
84 return FPGA_FAIL;
85 }
86 if (!bsize) {
87 printf ("%s(%d) size is zero\n", __FUNCTION__, __LINE__);
88 return FPGA_FAIL;
89 }
90 if (!desc->iface_fns) {
91 printf
92 ("%s(%d) Altera_desc function interface table is missing\n",
93 __FUNCTION__, __LINE__);
94 return FPGA_FAIL;
95 }
96 fns = (altera_board_specific_func *) (desc->iface_fns);
97 cookie = desc->cookie;
98
99 if (!
100 (fns->config && fns->status && fns->done && fns->data
101 && fns->abort)) {
102 printf
103 ("%s(%d) Missing some function in the function interface table\n",
104 __FUNCTION__, __LINE__);
105 return FPGA_FAIL;
106 }
107
108 /* 1. give board specific a chance to do anything before we start */
109 if (fns->pre) {
110 if ((ret_val = fns->pre (cookie)) < 0) {
111 return ret_val;
112 }
113 }
114
115 /* from this point on we must fail gracfully by calling lower layer abort */
116
117 /* 2. Strat burn cycle by deasserting config for t_CFG and waiting t_CF2CK after reaserted */
118 fns->config (0, 1, cookie);
119 udelay (5); /* nCONFIG low pulse width 2usec */
120 fns->config (1, 1, cookie);
121 udelay (100); /* nCONFIG high to first rising edge on DCLK */
122
123 /* 3. Start the Data cycle with clk deasserted */
124 bytecount = 0;
125 fns->clk (0, 1, cookie);
126
127 printf ("loading to fpga ");
128 while (bytecount < bsize) {
129 /* 3.1 check stratix has not signaled us an error */
130 if (fns->status (cookie) != 1) {
131 printf
132 ("\n%s(%d) Stratix failed (byte transferred till failure 0x%x)\n",
133 __FUNCTION__, __LINE__, bytecount);
134 fns->abort (cookie);
135 return FPGA_FAIL;
136 }
137 if (isSerial) {
138 int i;
139 uint8_t data = buff[bytecount++];
140 for (i = 0; i < 8; i++) {
141 /* 3.2(ps) put data on the bus */
142 fns->data ((data >> i) & 1, 1, cookie);
143
144 /* 3.3(ps) clock once */
145 fns->clk (1, 1, cookie);
146 fns->clk (0, 1, cookie);
147 }
148 } else {
149 /* 3.2(fpp) put data on the bus */
150 fns->data (buff[bytecount++], 1, cookie);
151
152 /* 3.3(fpp) clock once */
153 fns->clk (1, 1, cookie);
154 fns->clk (0, 1, cookie);
155
156 /* 3.4(fpp) for secure cycle push 3 more clocks */
157 for (i = 0; isSecure && i < 3; i++) {
158 fns->clk (1, 1, cookie);
159 fns->clk (0, 1, cookie);
160 }
161 }
162
163 /* 3.5 while clk is deasserted it is safe to print some progress indication */
164 if ((bytecount % (bsize / 100)) == 0) {
165 printf ("\b\b\b%02d\%", bytecount * 100 / bsize);
166 }
167 }
168
169 /* 4. Set one last clock and check conf done signal */
170 fns->clk (1, 1, cookie);
171 udelay (100);
172 if (!fns->done (cookie)) {
173 printf (" error!.\n");
174 fns->abort (cookie);
175 return FPGA_FAIL;
176 } else {
177 printf ("\b\b\b done.\n");
178 }
179
180 /* 5. call lower layer post configuration */
181 if (fns->post) {
182 if ((ret_val = fns->post (cookie)) < 0) {
183 fns->abort (cookie);
184 return ret_val;
185 }
186 }
187
188 return FPGA_SUCCESS;
189 }
190