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gerrit.cesnet.cz / github / trini / u-boot / 8bde7f776c77b343aca29b8c7b58464d915ac245 / . / drivers / dataflash.c
blob: 26a6f84e4c2188fe6982125763e01050dc82b647 [file] [log] [blame]
wdenk2abbe072003-06-16 23:50:08 +0000[diff] [blame]1/* LowLevel function for ATMEL DataFlash support
2 * Author : Hamid Ikdoumi (Atmel)
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
17 * MA 02111-1307 USA
18 *
19 */
20#include <common.h>
21#include <config.h>
22#ifdef CONFIG_HAS_DATAFLASH
23#include <asm/hardware.h>
24#include <dataflash.h>
25
26AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];
27static AT91S_DataFlash DataFlashInst;
28
29int cs[][CFG_MAX_DATAFLASH_BANKS] = {
30 {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}, /* Logical adress, CS */
31 {CFG_DATAFLASH_LOGIC_ADDR_CS3, 3}
32};
33
34extern void AT91F_SpiInit (void);
35extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc);
36extern int AT91F_DataFlashRead (AT91PS_DataFlash pDataFlash,
37 unsigned long addr,
38 unsigned long size, char *buffer);
39
40
41int AT91F_DataflashInit (void)
42{
43 int i, j;
44 int dfcode;
45
46 AT91F_SpiInit ();
47
48 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
49
50 dataflash_info[i].id = 0;
51 dataflash_info[i].Device.pages_number = 0;
52 dfcode = AT91F_DataflashProbe (cs[i][1], &dataflash_info[i].Desc);
53
54 switch (dfcode) {
55 case AT45DB161:
56 dataflash_info[i].Device.pages_number = 4096;
57 dataflash_info[i].Device.pages_size = 528;
58 dataflash_info[i].Device.page_offset = 10;
59 dataflash_info[i].Device.byte_mask = 0x300;
60 dataflash_info[i].Device.cs = cs[i][1];
61 dataflash_info[i].Desc.DataFlash_state = IDLE;
62 dataflash_info[i].logical_address = cs[i][0];
63 dataflash_info[i].id = dfcode;
64 break;
65
66 case AT45DB321:
67 dataflash_info[i].Device.pages_number = 8192;
68 dataflash_info[i].Device.pages_size = 528;
69 dataflash_info[i].Device.page_offset = 10;
70 dataflash_info[i].Device.byte_mask = 0x300;
71 dataflash_info[i].Device.cs = cs[i][1];
72 dataflash_info[i].Desc.DataFlash_state = IDLE;
73 dataflash_info[i].logical_address = cs[i][0];
74 dataflash_info[i].id = dfcode;
75 break;
76
77 case AT45DB642:
78 dataflash_info[i].Device.pages_number = 8192;
79 dataflash_info[i].Device.pages_size = 1056;
80 dataflash_info[i].Device.page_offset = 11;
81 dataflash_info[i].Device.byte_mask = 0x700;
82 dataflash_info[i].Device.cs = cs[i][1];
83 dataflash_info[i].Desc.DataFlash_state = IDLE;
84 dataflash_info[i].logical_address = cs[i][0];
85 dataflash_info[i].id = dfcode;
86 break;
87
88 default:
89 break;
90 }
91
92 for (j = 0; j < dataflash_info[i].Device.pages_number; j++)
93 dataflash_info[i].protect[j] = FLAG_PROTECT_SET;
94
95 }
96 return (1);
97}
98
99
wdenk2abbe072003-06-16 23:50:08 +0000[diff] [blame]100void dataflash_print_info (void)
101{
102 int i;
103
104 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
105 if (dataflash_info[i].id != 0) {
106 printf ("DataFlash:");
107 switch (dataflash_info[i].id) {
108 case AT45DB161:
109 printf ("AT45DB161\n");
110 break;
111
112 case AT45DB321:
113 printf ("AT45DB321\n");
114 break;
115
116 case AT45DB642:
117 printf ("AT45DB642\n");
118 break;
119 }
120
121 printf ("Nb pages: %6d\n"
122 "Page Size: %6d\n"
123 "Size=%8d bytes\n"
124 "Logical address: 0x%08X\n",
125 (unsigned int) dataflash_info[i].Device.pages_number,
126 (unsigned int) dataflash_info[i].Device.pages_size,
127 (unsigned int) dataflash_info[i].Device.pages_number *
128 dataflash_info[i].Device.pages_size,
129 (unsigned int) dataflash_info[i].logical_address);
130 }
131 }
132}
133
134
135/*------------------------------------------------------------------------------*/
136/* Function Name : AT91F_DataflashSelect */
137/* Object : Select the correct device */
138/*------------------------------------------------------------------------------*/
139AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash,
140 unsigned int *addr)
141{
142 char addr_valid = 0;
143 int i;
144
145 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++)
146 if ((*addr & 0xFF000000) == dataflash_info[i].logical_address) {
147 addr_valid = 1;
148 break;
149 }
150 if (!addr_valid) {
151 pFlash = (AT91PS_DataFlash) 0;
152 return pFlash;
153 }
154 pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
155 pFlash->pDevice = &(dataflash_info[i].Device);
156 *addr -= dataflash_info[i].logical_address;
157 return (pFlash);
158}
159
160/*------------------------------------------------------------------------------*/
161/* Function Name : addr_dataflash */
162/* Object : Test if address is valid */
163/*------------------------------------------------------------------------------*/
164int addr_dataflash (unsigned long addr)
165{
166 int addr_valid = 0;
167 int i;
168
169 for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
170 if ((((int) addr) & 0xFF000000) ==
171 dataflash_info[i].logical_address) {
172 addr_valid = 1;
173 break;
174 }
175 }
176
177 return addr_valid;
178}
179
180/*------------------------------------------------------------------------------*/
181/* Function Name : read_dataflash */
182/* Object : dataflash memory read */
183/*------------------------------------------------------------------------------*/
184int read_dataflash (unsigned long addr, unsigned long size, char *result)
185{
186 int AddrToRead = addr;
187 AT91PS_DataFlash pFlash = &DataFlashInst;
188
189 pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
190 if (pFlash == 0)
191 return -1;
192
193 return (AT91F_DataFlashRead (pFlash, AddrToRead, size, result));
194}
195
196
197/*-----------------------------------------------------------------------------*/
198/* Function Name : write_dataflash */
199/* Object : write a block in dataflash */
200/*-----------------------------------------------------------------------------*/
201int write_dataflash (unsigned long addr_dest, unsigned long addr_src,
202 unsigned long size)
203{
204 extern AT91S_DataFlashStatus AT91F_DataFlashWrite(
205 AT91PS_DataFlash, uchar *, int, int);
206 int AddrToWrite = addr_dest;
207 AT91PS_DataFlash pFlash = &DataFlashInst;
208
209 pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
210 if (AddrToWrite == -1)
211 return -1;
212
213 return AT91F_DataFlashWrite (pFlash, (char *) addr_src, AddrToWrite,
214 size);
215}
216
217
218void dataflash_perror (int err)
219{
220 switch (err) {
221 case ERR_OK:
222 break;
223 case ERR_TIMOUT:
224 printf ("Timeout writing to DataFlash\n");
225 break;
226 case ERR_PROTECTED:
227 printf ("Can't write to protected DataFlash sectors\n");
228 break;
229 case ERR_INVAL:
230 printf ("Outside available DataFlash\n");
231 break;
232 case ERR_UNKNOWN_FLASH_TYPE:
233 printf ("Unknown Type of DataFlash\n");
234 break;
235 case ERR_PROG_ERROR:
236 printf ("General DataFlash Programming Error\n");
237 break;
238 default:
239 printf ("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
240 break;
241 }
242}
243
244#endif