3 * Stefan Roese, DENX Software Engineering, sr@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 * NOR and NAND boot options change bytes 5, 6, 8, 9, 11. The
32 * values are independent of the rest of the clock settings.
35 #define NAND_COMPATIBLE 0x01
36 #define NOR_COMPATIBLE 0x02
38 #define I2C_EEPROM_ADDR 0x52
40 static char *config_labels[] = {
41 "CPU: 600 PLB: 200 OPB: 100 EBC: 100",
42 "CPU: 800 PLB: 200 OPB: 100 EBC: 100",
46 static u8 boot_configs[][17] = {
48 (NAND_COMPATIBLE | NOR_COMPATIBLE),
49 0x86, 0x80, 0xce, 0x1f, 0x79, 0x80, 0x00, 0xa0, 0x40, 0x08,
50 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
53 (NAND_COMPATIBLE | NOR_COMPATIBLE),
54 0x86, 0x80, 0xba, 0x14, 0x99, 0x80, 0x00, 0xa0, 0x40, 0x08,
55 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
59 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
64 * Bytes 5,6,8,9,11 change for NAND boot
68 * Values for 512 page size NAND chips, not used anymore, just
69 * keep them here for reference
71 static u8 nand_boot[] = {
72 0x90, 0x01, 0xa0, 0x68, 0x58
76 * Values for 2k page size NAND chips
78 static u8 nand_boot[] = {
79 0x90, 0x01, 0xa0, 0xe8, 0x58
83 static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
86 int x, y, nbytes, selcfg;
87 extern char console_buffer[];
90 printf("Usage:\n%s\n", cmdtp->usage);
94 if ((strcmp(argv[1], "nor") != 0) &&
95 (strcmp(argv[1], "nand") != 0)) {
96 printf("Unsupported boot-device - only nor|nand support\n");
100 /* set the nand flag based on provided input */
101 if ((strcmp(argv[1], "nand") == 0))
106 printf("Available configurations: \n\n");
109 for(x = 0, y = 0; boot_configs[x][0] != 0; x++) {
110 /* filter on nand compatible */
111 if (boot_configs[x][0] & NAND_COMPATIBLE) {
112 printf(" %d - %s\n", (y+1), config_labels[x]);
117 for(x = 0, y = 0; boot_configs[x][0] != 0; x++) {
118 /* filter on nor compatible */
119 if (boot_configs[x][0] & NOR_COMPATIBLE) {
120 printf(" %d - %s\n", (y+1), config_labels[x]);
127 nbytes = readline(" Selection [1-x / quit]: ");
130 if (strcmp(console_buffer, "quit") == 0)
132 selcfg = simple_strtol(console_buffer, NULL, 10);
133 if ((selcfg < 1) || (selcfg > y))
136 } while (nbytes == 0);
141 for (x = 0; boot_configs[x][0] != 0; x++) {
143 if (boot_configs[x][0] & NAND_COMPATIBLE) {
150 if (boot_configs[x][0] & NOR_COMPATIBLE) {
159 buf = &boot_configs[x][1];
162 buf[5] = nand_boot[0];
163 buf[6] = nand_boot[1];
164 buf[8] = nand_boot[2];
165 buf[9] = nand_boot[3];
166 buf[11] = nand_boot[4];
169 if (i2c_write(I2C_EEPROM_ADDR, 0, 1, buf, 16) != 0)
170 printf("Error writing to EEPROM at address 0x%x\n", I2C_EEPROM_ADDR);
171 udelay(CFG_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
174 printf("Please power-cycle the board for the changes to take effect\n");
180 bootstrap, 2, 0, do_bootstrap,
181 "bootstrap - program the I2C bootstrap EEPROM\n",
182 "<nand|nor> - strap to boot from NAND or NOR flash\n"