faux.c 4.31 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
/***************************************************************************
 *   Copyright (C) 2009 Øyvind Harboe                                      *
 *   oyvind.harboe@zylin.com                                               *
 *                                                                         *
 *   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.,                                       *
18
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
19
 ***************************************************************************/
20

21 22 23 24
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

Zachary T Welch's avatar
Zachary T Welch committed
25
#include "imp.h"
26
#include <target/image.h>
27
#include "hello.h"
28

29
struct faux_flash_bank {
Zachary T Welch's avatar
Zachary T Welch committed
30
	struct target *target;
31 32
	uint8_t *memory;
	uint32_t start_address;
33
};
34 35 36 37 38 39

static const int sectorSize = 0x10000;


/* flash bank faux <base> <size> <chip_width> <bus_width> <target#> <driverPath>
 */
40
FLASH_BANK_COMMAND_HANDLER(faux_flash_bank_command)
41
{
42
	struct faux_flash_bank *info;
43

44
	if (CMD_ARGC < 6)
Mathias K's avatar
Mathias K committed
45
		return ERROR_COMMAND_SYNTAX_ERROR;
46

47
	info = malloc(sizeof(struct faux_flash_bank));
48
	if (info == NULL) {
49 50 51 52
		LOG_ERROR("no memory for flash bank info");
		return ERROR_FAIL;
	}
	info->memory = malloc(bank->size);
53
	if (info->memory == NULL) {
54 55 56 57 58 59 60 61 62 63
		free(info);
		LOG_ERROR("no memory for flash bank info");
		return ERROR_FAIL;
	}
	bank->driver_priv = info;

	/* Use 0x10000 as a fixed sector size. */
	int i = 0;
	uint32_t offset = 0;
	bank->num_sectors = bank->size/sectorSize;
64
	bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
65
	for (i = 0; i < bank->num_sectors; i++) {
66 67 68 69 70 71 72
		bank->sectors[i].offset = offset;
		bank->sectors[i].size = sectorSize;
		offset += bank->sectors[i].size;
		bank->sectors[i].is_erased = -1;
		bank->sectors[i].is_protected = 0;
	}

73
	info->target = get_target(CMD_ARGV[5]);
74
	if (info->target == NULL) {
75
		LOG_ERROR("target '%s' not defined", CMD_ARGV[5]);
76 77 78 79 80 81 82
		free(info->memory);
		free(info);
		return ERROR_FAIL;
	}
	return ERROR_OK;
}

83
static int faux_erase(struct flash_bank *bank, int first, int last)
84
{
85
	struct faux_flash_bank *info = bank->driver_priv;
86 87 88 89
	memset(info->memory + first*sectorSize, 0xff, sectorSize*(last-first + 1));
	return ERROR_OK;
}

90
static int faux_protect(struct flash_bank *bank, int set, int first, int last)
91
{
92
	LOG_USER("set protection sector %d to %d to %s", first, last, set ? "on" : "off");
93 94 95
	return ERROR_OK;
}

96
static int faux_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t offset, uint32_t count)
97
{
98
	struct faux_flash_bank *info = bank->driver_priv;
99 100 101 102
	memcpy(info->memory + offset, buffer, count);
	return ERROR_OK;
}

103
static int faux_protect_check(struct flash_bank *bank)
104 105 106 107
{
	return ERROR_OK;
}

108
static int faux_info(struct flash_bank *bank, char *buf, int buf_size)
109 110 111 112 113
{
	snprintf(buf, buf_size, "faux flash driver");
	return ERROR_OK;
}

114
static int faux_probe(struct flash_bank *bank)
115 116 117
{
	return ERROR_OK;
}
118

119 120 121 122 123 124 125 126 127 128
static const struct command_registration faux_command_handlers[] = {
	{
		.name = "faux",
		.mode = COMMAND_ANY,
		.help = "faux flash command group",
		.chain = hello_command_handlers,
	},
	COMMAND_REGISTRATION_DONE
};

129
struct flash_driver faux_flash = {
David Brownell's avatar
David Brownell committed
130 131 132 133 134 135
	.name = "faux",
	.commands = faux_command_handlers,
	.flash_bank_command = faux_flash_bank_command,
	.erase = faux_erase,
	.protect = faux_protect,
	.write = faux_write,
136
	.read = default_flash_read,
David Brownell's avatar
David Brownell committed
137 138 139 140 141 142
	.probe = faux_probe,
	.auto_probe = faux_probe,
	.erase_check = default_flash_blank_check,
	.protect_check = faux_protect_check,
	.info = faux_info
};