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Peter Stugebf196e92009-01-26 03:08:45 +00001/*
2 * This file is part of the flashrom project.
3 *
4 * Copyright (C) 2008 Peter Stuge <peter@stuge.se>
Carl-Daniel Hailfinger5609fa72010-01-07 03:32:17 +00005 * Copyright (C) 2009,2010 Carl-Daniel Hailfinger
Peter Stugebf196e92009-01-26 03:08:45 +00006 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
Carl-Daniel Hailfingercceafa22010-05-26 01:45:41 +000021#if defined(__i386__) || defined(__x86_64__)
22
Peter Stugebf196e92009-01-26 03:08:45 +000023#include "flash.h"
Sean Nelson14ba6682010-02-26 05:48:29 +000024#include "chipdrivers.h"
Carl-Daniel Hailfinger5b997c32010-07-27 22:41:39 +000025#include "programmer.h"
Peter Stugebf196e92009-01-26 03:08:45 +000026#include "spi.h"
27
28#define WBSIO_PORT1 0x2e
29#define WBSIO_PORT2 0x4e
30
31static uint16_t wbsio_spibase = 0;
32
Uwe Hermann7b2969b2009-04-15 10:52:49 +000033static uint16_t wbsio_get_spibase(uint16_t port)
34{
Peter Stugebf196e92009-01-26 03:08:45 +000035 uint8_t id;
36 uint16_t flashport = 0;
37
38 w836xx_ext_enter(port);
Carl-Daniel Hailfinger24c1a162009-05-25 23:26:50 +000039 id = sio_read(port, 0x20);
Uwe Hermann7b2969b2009-04-15 10:52:49 +000040 if (id != 0xa0) {
Sean Nelsonf7f7a552010-01-09 23:34:45 +000041 msg_perr("\nW83627 not found at 0x%x, id=0x%02x want=0xa0.\n", port, id);
Peter Stugebf196e92009-01-26 03:08:45 +000042 goto done;
43 }
44
Carl-Daniel Hailfinger24c1a162009-05-25 23:26:50 +000045 if (0 == (sio_read(port, 0x24) & 2)) {
Sean Nelsonf7f7a552010-01-09 23:34:45 +000046 msg_perr("\nW83627 found at 0x%x, but SPI pins are not enabled. (CR[0x24] bit 1=0)\n", port);
Peter Stugebf196e92009-01-26 03:08:45 +000047 goto done;
48 }
49
Carl-Daniel Hailfinger24c1a162009-05-25 23:26:50 +000050 sio_write(port, 0x07, 0x06);
51 if (0 == (sio_read(port, 0x30) & 1)) {
Sean Nelsonf7f7a552010-01-09 23:34:45 +000052 msg_perr("\nW83627 found at 0x%x, but SPI is not enabled. (LDN6[0x30] bit 0=0)\n", port);
Peter Stugebf196e92009-01-26 03:08:45 +000053 goto done;
54 }
55
Carl-Daniel Hailfinger24c1a162009-05-25 23:26:50 +000056 flashport = (sio_read(port, 0x62) << 8) | sio_read(port, 0x63);
Peter Stugebf196e92009-01-26 03:08:45 +000057
58done:
59 w836xx_ext_leave(port);
60 return flashport;
61}
62
Michael Karcherb9dbe482011-05-11 17:07:07 +000063static int wbsio_spi_send_command(unsigned int writecnt, unsigned int readcnt,
64 const unsigned char *writearr, unsigned char *readarr);
Stefan Tauner8c357452011-09-18 22:42:18 +000065static int wbsio_spi_read(struct flashchip *flash, uint8_t *buf, int start, int len);
Michael Karcherb9dbe482011-05-11 17:07:07 +000066
67static const struct spi_programmer spi_programmer_wbsio = {
68 .type = SPI_CONTROLLER_WBSIO,
69 .max_data_read = MAX_DATA_UNSPECIFIED,
70 .max_data_write = MAX_DATA_UNSPECIFIED,
71 .command = wbsio_spi_send_command,
72 .multicommand = default_spi_send_multicommand,
73 .read = wbsio_spi_read,
74 .write_256 = spi_chip_write_1,
75};
76
Uwe Hermann36dec8b2010-06-07 19:06:26 +000077int wbsio_check_for_spi(void)
Uwe Hermann7b2969b2009-04-15 10:52:49 +000078{
Peter Stugebf196e92009-01-26 03:08:45 +000079 if (0 == (wbsio_spibase = wbsio_get_spibase(WBSIO_PORT1)))
80 if (0 == (wbsio_spibase = wbsio_get_spibase(WBSIO_PORT2)))
81 return 1;
82
Sean Nelsonf7f7a552010-01-09 23:34:45 +000083 msg_pspew("\nwbsio_spibase = 0x%x\n", wbsio_spibase);
Carl-Daniel Hailfingerb22918c2009-06-01 02:08:58 +000084
Carl-Daniel Hailfingerca812d42010-07-14 19:57:52 +000085 msg_pdbg("%s: Winbond saved on 4 register bits so max chip size is "
Stefan Taunerc0aaf952011-05-19 02:58:17 +000086 "1024 kB!\n", __func__);
Carl-Daniel Hailfingerca812d42010-07-14 19:57:52 +000087 max_rom_decode.spi = 1024 * 1024;
Carl-Daniel Hailfingereaacd2d2011-11-09 23:40:00 +000088 register_spi_programmer(&spi_programmer_wbsio);
Carl-Daniel Hailfingerb22918c2009-06-01 02:08:58 +000089
Peter Stugebf196e92009-01-26 03:08:45 +000090 return 0;
91}
92
93/* W83627DHG has 11 command modes:
94 * 1=1 command only
95 * 2=1 command+1 data write
96 * 3=1 command+2 data read
97 * 4=1 command+3 address
98 * 5=1 command+3 address+1 data write
99 * 6=1 command+3 address+4 data write
100 * 7=1 command+3 address+1 dummy address inserted by wbsio+4 data read
101 * 8=1 command+3 address+1 data read
102 * 9=1 command+3 address+2 data read
103 * a=1 command+3 address+3 data read
104 * b=1 command+3 address+4 data read
105 *
106 * mode[7:4] holds the command mode
107 * mode[3:0] holds SPI address bits [19:16]
108 *
109 * The Winbond SPI master only supports 20 bit addresses on the SPI bus. :\
110 * Would one more byte of RAM in the chip (to get all 24 bits) really make
111 * such a big difference?
112 */
Michael Karcherb9dbe482011-05-11 17:07:07 +0000113static int wbsio_spi_send_command(unsigned int writecnt, unsigned int readcnt,
Uwe Hermann7b2969b2009-04-15 10:52:49 +0000114 const unsigned char *writearr, unsigned char *readarr)
115{
Peter Stugebf196e92009-01-26 03:08:45 +0000116 int i;
117 uint8_t mode = 0;
118
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000119 msg_pspew("%s:", __func__);
Peter Stugebf196e92009-01-26 03:08:45 +0000120
121 if (1 == writecnt && 0 == readcnt) {
122 mode = 0x10;
123 } else if (2 == writecnt && 0 == readcnt) {
124 OUTB(writearr[1], wbsio_spibase + 4);
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000125 msg_pspew(" data=0x%02x", writearr[1]);
Peter Stugebf196e92009-01-26 03:08:45 +0000126 mode = 0x20;
127 } else if (1 == writecnt && 2 == readcnt) {
128 mode = 0x30;
129 } else if (4 == writecnt && 0 == readcnt) {
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000130 msg_pspew(" addr=0x%02x", (writearr[1] & 0x0f));
Peter Stugebf196e92009-01-26 03:08:45 +0000131 for (i = 2; i < writecnt; i++) {
132 OUTB(writearr[i], wbsio_spibase + i);
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000133 msg_pspew("%02x", writearr[i]);
Peter Stugebf196e92009-01-26 03:08:45 +0000134 }
135 mode = 0x40 | (writearr[1] & 0x0f);
136 } else if (5 == writecnt && 0 == readcnt) {
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000137 msg_pspew(" addr=0x%02x", (writearr[1] & 0x0f));
Peter Stugebf196e92009-01-26 03:08:45 +0000138 for (i = 2; i < 4; i++) {
139 OUTB(writearr[i], wbsio_spibase + i);
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000140 msg_pspew("%02x", writearr[i]);
Peter Stugebf196e92009-01-26 03:08:45 +0000141 }
142 OUTB(writearr[i], wbsio_spibase + i);
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000143 msg_pspew(" data=0x%02x", writearr[i]);
Peter Stugebf196e92009-01-26 03:08:45 +0000144 mode = 0x50 | (writearr[1] & 0x0f);
145 } else if (8 == writecnt && 0 == readcnt) {
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000146 msg_pspew(" addr=0x%02x", (writearr[1] & 0x0f));
Peter Stugebf196e92009-01-26 03:08:45 +0000147 for (i = 2; i < 4; i++) {
148 OUTB(writearr[i], wbsio_spibase + i);
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000149 msg_pspew("%02x", writearr[i]);
Peter Stugebf196e92009-01-26 03:08:45 +0000150 }
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000151 msg_pspew(" data=0x");
Peter Stugebf196e92009-01-26 03:08:45 +0000152 for (; i < writecnt; i++) {
153 OUTB(writearr[i], wbsio_spibase + i);
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000154 msg_pspew("%02x", writearr[i]);
Peter Stugebf196e92009-01-26 03:08:45 +0000155 }
156 mode = 0x60 | (writearr[1] & 0x0f);
157 } else if (5 == writecnt && 4 == readcnt) {
158 /* XXX: TODO not supported by flashrom infrastructure!
159 * This mode, 7, discards the fifth byte in writecnt,
160 * but since we can not express that in flashrom, fail
161 * the operation for now.
162 */
163 ;
164 } else if (4 == writecnt && readcnt >= 1 && readcnt <= 4) {
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000165 msg_pspew(" addr=0x%02x", (writearr[1] & 0x0f));
Peter Stugebf196e92009-01-26 03:08:45 +0000166 for (i = 2; i < writecnt; i++) {
167 OUTB(writearr[i], wbsio_spibase + i);
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000168 msg_pspew("%02x", writearr[i]);
Peter Stugebf196e92009-01-26 03:08:45 +0000169 }
170 mode = ((7 + readcnt) << 4) | (writearr[1] & 0x0f);
171 }
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000172 msg_pspew(" cmd=%02x mode=%02x\n", writearr[0], mode);
Peter Stugebf196e92009-01-26 03:08:45 +0000173
174 if (!mode) {
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000175 msg_perr("%s: unsupported command type wr=%d rd=%d\n",
Peter Stugebf196e92009-01-26 03:08:45 +0000176 __func__, writecnt, readcnt);
Carl-Daniel Hailfinger142e30f2009-07-14 10:26:56 +0000177 /* Command type refers to the number of bytes read/written. */
178 return SPI_INVALID_LENGTH;
Peter Stugebf196e92009-01-26 03:08:45 +0000179 }
180
181 OUTB(writearr[0], wbsio_spibase);
182 OUTB(mode, wbsio_spibase + 1);
Carl-Daniel Hailfingerca8bfc62009-06-05 17:48:08 +0000183 programmer_delay(10);
Peter Stugebf196e92009-01-26 03:08:45 +0000184
185 if (!readcnt)
186 return 0;
187
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000188 msg_pspew("%s: returning data =", __func__);
Peter Stugebf196e92009-01-26 03:08:45 +0000189 for (i = 0; i < readcnt; i++) {
190 readarr[i] = INB(wbsio_spibase + 4 + i);
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000191 msg_pspew(" 0x%02x", readarr[i]);
Peter Stugebf196e92009-01-26 03:08:45 +0000192 }
Sean Nelsonf7f7a552010-01-09 23:34:45 +0000193 msg_pspew("\n");
Peter Stugebf196e92009-01-26 03:08:45 +0000194 return 0;
195}
196
Stefan Tauner8c357452011-09-18 22:42:18 +0000197static int wbsio_spi_read(struct flashchip *flash, uint8_t *buf, int start, int len)
Uwe Hermann7b2969b2009-04-15 10:52:49 +0000198{
Carl-Daniel Hailfinger116081a2009-08-10 02:29:21 +0000199 return read_memmapped(flash, buf, start, len);
Peter Stugebf196e92009-01-26 03:08:45 +0000200}
201
Carl-Daniel Hailfingercceafa22010-05-26 01:45:41 +0000202#endif