powerpc/ppc4xx: Make gdsys 405ep boards reset more generic
[platform/kernel/u-boot.git] / board / gdsys / 405ep / io.c
1 /*
2  * (C) Copyright 2010
3  * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23
24 #include <common.h>
25 #include <command.h>
26 #include <asm/processor.h>
27 #include <asm/io.h>
28 #include <asm/ppc4xx-gpio.h>
29
30 #include <miiphy.h>
31
32 #include "405ep.h"
33 #include <gdsys_fpga.h>
34
35 #define LATCH0_BASE (CONFIG_SYS_LATCH_BASE)
36 #define LATCH1_BASE (CONFIG_SYS_LATCH_BASE + 0x100)
37 #define LATCH2_BASE (CONFIG_SYS_LATCH_BASE + 0x200)
38
39 #define PHYREG_CONTROL                          0
40 #define PHYREG_PAGE_ADDRESS                     22
41 #define PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1    16
42 #define PHYREG_PG2_COPPER_SPECIFIC_CONTROL_2    26
43
44 enum {
45         UNITTYPE_CCD_SWITCH = 1,
46 };
47
48 enum {
49         HWVER_100 = 0,
50         HWVER_110 = 1,
51         HWVER_121 = 2,
52         HWVER_122 = 3,
53 };
54
55 int configure_gbit_phy(unsigned char addr)
56 {
57         unsigned short value;
58
59         /* select page 2 */
60         if (miiphy_write(CONFIG_SYS_GBIT_MII_BUSNAME, addr,
61                 PHYREG_PAGE_ADDRESS, 0x0002))
62                 goto err_out;
63         /* disable SGMII autonegotiation */
64         if (miiphy_write(CONFIG_SYS_GBIT_MII_BUSNAME, addr,
65                 PHYREG_PG2_COPPER_SPECIFIC_CONTROL_2, 0x800a))
66                 goto err_out;
67         /* select page 0 */
68         if (miiphy_write(CONFIG_SYS_GBIT_MII_BUSNAME, addr,
69                 PHYREG_PAGE_ADDRESS, 0x0000))
70                 goto err_out;
71         /* switch from powerdown to normal operation */
72         if (miiphy_read(CONFIG_SYS_GBIT_MII_BUSNAME, addr,
73                 PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1, &value))
74                 goto err_out;
75         if (miiphy_write(CONFIG_SYS_GBIT_MII_BUSNAME, addr,
76                 PHYREG_PG0_COPPER_SPECIFIC_CONTROL_1, value & ~0x0004))
77                 goto err_out;
78         /* reset phy so settings take effect */
79         if (miiphy_write(CONFIG_SYS_GBIT_MII_BUSNAME, addr,
80                 PHYREG_CONTROL, 0x9140))
81                 goto err_out;
82
83         return 0;
84
85 err_out:
86         printf("Error writing to the PHY addr=%02x\n", addr);
87         return -1;
88 }
89
90 /*
91  * Check Board Identity:
92  */
93 int checkboard(void)
94 {
95         char buf[64];
96         int i = getenv_f("serial#", buf, sizeof(buf));
97         ihs_fpga_t *fpga = (ihs_fpga_t *) CONFIG_SYS_FPGA_BASE(0);
98         u16 versions = in_le16(&fpga->versions);
99         u16 fpga_version = in_le16(&fpga->fpga_version);
100         u16 fpga_features = in_le16(&fpga->fpga_features);
101         unsigned unit_type;
102         unsigned hardware_version;
103         unsigned feature_channels;
104         unsigned feature_expansion;
105
106         unit_type = (versions & 0xf000) >> 12;
107         hardware_version = versions & 0x000f;
108         feature_channels = fpga_features & 0x007f;
109         feature_expansion = fpga_features & (1<<15);
110
111         printf("Board: ");
112
113         printf("CATCenter Io");
114
115         if (i > 0) {
116                 puts(", serial# ");
117                 puts(buf);
118         }
119         puts("\n       ");
120
121         switch (unit_type) {
122         case UNITTYPE_CCD_SWITCH:
123                 printf("CCD-Switch");
124                 break;
125
126         default:
127                 printf("UnitType %d(not supported)", unit_type);
128                 break;
129         }
130
131         switch (hardware_version) {
132         case HWVER_100:
133                 printf(" HW-Ver 1.00\n");
134                 break;
135
136         case HWVER_110:
137                 printf(" HW-Ver 1.10\n");
138                 break;
139
140         case HWVER_121:
141                 printf(" HW-Ver 1.21\n");
142                 break;
143
144         case HWVER_122:
145                 printf(" HW-Ver 1.22\n");
146                 break;
147
148         default:
149                 printf(" HW-Ver %d(not supported)\n",
150                        hardware_version);
151                 break;
152         }
153
154         printf("       FPGA V %d.%02d, features:",
155                 fpga_version / 100, fpga_version % 100);
156
157         printf(" %d channel(s)", feature_channels);
158
159         printf(", expansion %ssupported\n", feature_expansion ? "" : "un");
160
161         return 0;
162 }
163
164 /*
165  * setup Gbit PHYs
166  */
167 int last_stage_init(void)
168 {
169         ihs_fpga_t *fpga = (ihs_fpga_t *) CONFIG_SYS_FPGA_BASE(0);
170         unsigned int k;
171
172         miiphy_register(CONFIG_SYS_GBIT_MII_BUSNAME,
173                 bb_miiphy_read, bb_miiphy_write);
174
175         for (k = 0; k < 32; ++k)
176                 configure_gbit_phy(k);
177
178         /* take fpga serdes blocks out of reset */
179         out_le16(&fpga->quad_serdes_reset, 0);
180
181         return 0;
182 }
183
184 void gd405ep_init(void)
185 {
186 }
187
188 void gd405ep_set_fpga_reset(unsigned state)
189 {
190         if (state) {
191                 out_le16((void *)LATCH0_BASE, CONFIG_SYS_LATCH0_RESET);
192                 out_le16((void *)LATCH1_BASE, CONFIG_SYS_LATCH1_RESET);
193         } else {
194                 out_le16((void *)LATCH0_BASE, CONFIG_SYS_LATCH0_BOOT);
195                 out_le16((void *)LATCH1_BASE, CONFIG_SYS_LATCH1_BOOT);
196         }
197 }
198
199 void gd405ep_setup_hw(void)
200 {
201         /*
202          * set "startup-finished"-gpios
203          */
204         gpio_write_bit(21, 0);
205         gpio_write_bit(22, 1);
206 }
207
208 int gd405ep_get_fpga_done(unsigned fpga)
209 {
210         return in_le16((void *)LATCH2_BASE) & CONFIG_SYS_FPGA_DONE(fpga);
211 }