blob: 71f5d33823e4618f15dc8cf8022050f54c9212e1 [file] [log] [blame]
Ronald G. Minnich1f4d6532004-09-30 16:37:01 +00001/*
2 * adapted from the Intel FW hub stuff for 82802ax parts.
3 *
4 *
5 * Copyright 2000 Silicon Integrated System Corporation
6 *
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; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 *
22 * $Id$
23 */
24
25#include <errno.h>
26#include <fcntl.h>
27#include <sys/mman.h>
28#include <sys/io.h>
29#include <unistd.h>
30#include <stdio.h>
31#include <stdlib.h>
32
33#include "flash.h"
34#include "jedec.h"
35#include "sst_fwhub.h"
36
37// I need that Berkeley bit-map printer
38void print_sst_fwhub_status(unsigned char status)
39{
40 printf("%s", status & 0x80 ? "Ready:" : "Busy:");
41 printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:");
42 printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:");
43 printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:");
44 printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:");
45 printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:");
46 printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:");
47}
48
49/* probe_jedec works fine for probing */
50
51int probe_sst_fwhub(struct flashchip *flash)
52{
53 volatile unsigned char *bios = flash->virt_addr;
54 unsigned char id1, id2;
55 size_t size = flash->total_size * 1024;
56 /* Issue JEDEC Product ID Entry command */
57 *(volatile char *) (bios + 0x5555) = 0xAA;
58 myusec_delay(10);
59 *(volatile char *) (bios + 0x2AAA) = 0x55;
60 myusec_delay(10);
61 *(volatile char *) (bios + 0x5555) = 0x90;
62 myusec_delay(10);
63
64 /* Read product ID */
65 id1 = *(volatile unsigned char *) bios;
66 id2 = *(volatile unsigned char *) (bios + 0x01);
67
68 /* Issue JEDEC Product ID Exit command */
69 *(volatile char *) (bios + 0x5555) = 0xAA;
70 myusec_delay(10);
71 *(volatile char *) (bios + 0x2AAA) = 0x55;
72 myusec_delay(10);
73 *(volatile char *) (bios + 0x5555) = 0xF0;
74 myusec_delay(10);
75
76 printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
77 if (id1 != flash->manufacture_id || id2 != flash->model_id)
Ollie Lho98bea8a2004-12-07 03:15:51 +000078 return 0;
Ronald G. Minnich1f4d6532004-09-30 16:37:01 +000079
80 myusec_delay(10);
81
Ronald G. Minnich1f4d6532004-09-30 16:37:01 +000082 // we need to mmap the write-protect space.
Ollie Lhod11f3612004-12-07 17:19:04 +000083 printf("mapping control register at %x\n", 0 - 0x400000 -size);
Ronald G. Minnich1f4d6532004-09-30 16:37:01 +000084 bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
85 flash->fd_mem, (off_t) (0 - 0x400000 - size));
86 if (bios == MAP_FAILED) {
Ollie Lho98bea8a2004-12-07 03:15:51 +000087 // it's this part but we can't map it ...
88 perror("Error MMAP /dev/mem");
89 exit(1);
Ronald G. Minnich1f4d6532004-09-30 16:37:01 +000090 }
91
92 flash->virt_addr_2 = bios;
93 return 1;
94}
95
96unsigned char wait_sst_fwhub(volatile unsigned char *bios)
97{
Ronald G. Minnich1f4d6532004-09-30 16:37:01 +000098 toggle_ready_jedec(bios);
99 return 0;
100}
101
102int erase_sst_fwhub_block(struct flashchip *flash, int offset)
103{
104 volatile unsigned char *bios = flash->virt_addr + offset;
105 volatile unsigned char *wrprotect =
106 flash->virt_addr_2 + offset + 2;
107 unsigned char status;
108
109 // clear status register
110 printf("Erase at %p\n", bios);
111 // clear write protect
112 printf("write protect is at %p\n", (wrprotect));
113 printf("write protect is 0x%x\n", *(wrprotect));
114 *(wrprotect) = 0;
115 printf("write protect is 0x%x\n", *(wrprotect));
116
117 erase_block_jedec(flash->virt_addr, offset);
118 status = wait_sst_fwhub(flash->virt_addr);
119 //print_sst_fwhub_status(status);
120 printf("DONE BLOCK 0x%x\n", offset);
121 return (0);
122}
123
124int erase_sst_fwhub(struct flashchip *flash)
125{
126 int i;
127 unsigned int total_size = flash->total_size * 1024;
128
129 printf("total_size is %d; flash->page_size is %d\n",
130 total_size, flash->page_size);
131 for (i = 0; i < total_size; i += flash->page_size)
132 erase_sst_fwhub_block(flash, i);
133 printf("DONE ERASE\n");
134 return (0);
135}
136
Ollie Lho98bea8a2004-12-07 03:15:51 +0000137void write_page_sst_fwhub(volatile char *bios, char *src,
138 volatile char *dst, int page_size)
Ronald G. Minnich1f4d6532004-09-30 16:37:01 +0000139{
140 int i;
141
142 for (i = 0; i < page_size; i++) {
143 /* transfer data from source to destination */
Ollie Lho98bea8a2004-12-07 03:15:51 +0000144 write_byte_program_jedec(bios, src, dst);
145 src++;
146 dst++;
Ronald G. Minnich1f4d6532004-09-30 16:37:01 +0000147 }
148
149}
150
151int write_sst_fwhub(struct flashchip *flash, unsigned char *buf)
152{
153 int i;
154 int total_size = flash->total_size * 1024, page_size =
155 flash->page_size;
156 volatile unsigned char *bios = flash->virt_addr;
157
158 erase_sst_fwhub(flash);
159 if (*bios != 0xff) {
160 printf("ERASE FAILED\n");
161 return -1;
162 }
163 printf("Programming Page: ");
164 for (i = 0; i < total_size / page_size; i++) {
165 printf("%04d at address: 0x%08x", i, i * page_size);
166 write_page_sst_fwhub(bios, buf + i * page_size,
Ollie Lho98bea8a2004-12-07 03:15:51 +0000167 bios + i * page_size, page_size);
Ronald G. Minnich1f4d6532004-09-30 16:37:01 +0000168 printf
169 ("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
170 }
171 printf("\n");
172 protect_sst_fwhub(bios);
173 return (0);
174}