summaryrefslogtreecommitdiffstats
path: root/sharplhf00l04.c
blob: 4d652ae2eb50be8d3e4711ea5bccc9da9f303e9e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
/*
 * This file is part of the flashrom project.
 *
 * Copyright (C) 2000 Silicon Integrated System Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <stdlib.h>
#include "flash.h"

// I need that Berkeley bit-map printer
void print_lhf00l04_status(uint8_t status)
{
	printf("%s", status & 0x80 ? "Ready:" : "Busy:");
	printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:");
	printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:");
	printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:");
	printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:");
	printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:");
	printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:");
}

int probe_lhf00l04(struct flashchip *flash)
{
	chipaddr bios = flash->virtual_memory;
	uint8_t id1, id2;

#if 0
	/* Enter ID mode */
	chip_writeb(0xAA, bios + 0x5555);
	chip_writeb(0x55, bios + 0x2AAA);
	chip_writeb(0x90, bios + 0x5555);
#endif

	chip_writeb(0xff, bios);
	programmer_delay(10);
	chip_writeb(0x90, bios);
	programmer_delay(10);

	id1 = chip_readb(bios);
	id2 = chip_readb(bios + 0x01);

	/* Leave ID mode */
	chip_writeb(0xAA, bios + 0x5555);
	chip_writeb(0x55, bios + 0x2AAA);
	chip_writeb(0xF0, bios + 0x5555);

	programmer_delay(10);

	printf_debug("%s: id1 0x%02x, id2 0x%02x\n", __FUNCTION__, id1, id2);

	if (id1 != flash->manufacture_id || id2 != flash->model_id)
		return 0;

	map_flash_registers(flash);

	return 1;
}

uint8_t wait_lhf00l04(chipaddr bios)
{
	uint8_t status;
	uint8_t id1, id2;

	chip_writeb(0x70, bios);
	if ((chip_readb(bios) & 0x80) == 0) {	// it's busy
		while ((chip_readb(bios) & 0x80) == 0) ;
	}

	status = chip_readb(bios);

	// put another command to get out of status register mode

	chip_writeb(0x90, bios);
	programmer_delay(10);

	id1 = chip_readb(bios);
	id2 = chip_readb(bios + 0x01);

	// this is needed to jam it out of "read id" mode
	chip_writeb(0xAA, bios + 0x5555);
	chip_writeb(0x55, bios + 0x2AAA);
	chip_writeb(0xF0, bios + 0x5555);

	return status;
}

int erase_lhf00l04_block(struct flashchip *flash, int offset)
{
	chipaddr bios = flash->virtual_memory + offset;
	chipaddr wrprotect = flash->virtual_registers + offset + 2;
	uint8_t status;

	// clear status register
	chip_writeb(0x50, bios);
	printf("Erase at 0x%lx\n", bios);
	status = wait_lhf00l04(flash->virtual_memory);
	print_lhf00l04_status(status);
	// clear write protect
	printf("write protect is at 0x%lx\n", (wrprotect));
	printf("write protect is 0x%x\n", chip_readb(wrprotect));
	chip_writeb(0, wrprotect);
	printf("write protect is 0x%x\n", chip_readb(wrprotect));

	// now start it
	chip_writeb(0x20, bios);
	chip_writeb(0xd0, bios);
	programmer_delay(10);
	// now let's see what the register is
	status = wait_lhf00l04(flash->virtual_memory);
	print_lhf00l04_status(status);
	printf("DONE BLOCK 0x%x\n", offset);

	return 0;
}

int erase_lhf00l04(struct flashchip *flash)
{
	int i;
	unsigned int total_size = flash->total_size * 1024;

	printf("total_size is %d; flash->page_size is %d\n",
	       total_size, flash->page_size);
	for (i = 0; i < total_size; i += flash->page_size)
		erase_lhf00l04_block(flash, i);
	printf("DONE ERASE\n");

	return 0;
}

void write_page_lhf00l04(chipaddr bios, uint8_t *src,
			 chipaddr dst, int page_size)
{
	int i;

	for (i = 0; i < page_size; i++) {
		/* transfer data from source to destination */
		chip_writeb(0x40, dst);
		chip_writeb(*src++, dst++);
		wait_lhf00l04(bios);
	}
}

int write_lhf00l04(struct flashchip *flash, uint8_t *buf)
{
	int i;
	int total_size = flash->total_size * 1024;
	int page_size = flash->page_size;
	chipaddr bios = flash->virtual_memory;

	erase_lhf00l04(flash);
	if (chip_readb(bios) != 0xff) {
		printf("ERASE FAILED!\n");
		return -1;
	}
	printf("Programming page: ");
	for (i = 0; i < total_size / page_size; i++) {
		printf("%04d at address: 0x%08x", i, i * page_size);
		write_page_lhf00l04(bios, buf + i * page_size,
				    bios + i * page_size, page_size);
		printf("\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");
	}
	printf("\n");
	protect_jedec(bios);

	return 0;
}
OpenPOWER on IntegriCloud