mirror of
https://github.com/AsahiLinux/u-boot
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a89c33db96
Many of the help messages were not really helpful; for example, many commands that take no arguments would not print a correct synopsis line, but "No additional help available." which is not exactly wrong, but not helpful either. Commit ``Make "usage" messages more helpful.'' changed this partially. But it also became clear that lots of "Usage" and "Help" messages (fields "usage" and "help" in struct cmd_tbl_s respective) were actually redundant. This patch cleans this up - for example: Before: => help dtt dtt - Digital Thermometer and Thermostat Usage: dtt - Read temperature from digital thermometer and thermostat. After: => help dtt dtt - Read temperature from Digital Thermometer and Thermostat Usage: dtt Signed-off-by: Wolfgang Denk <wd@denx.de>
231 lines
5.8 KiB
C
231 lines
5.8 KiB
C
/*
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* (C) Copyright 2007
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* Stefan Roese, DENX Software Engineering, sr@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <i2c.h>
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#include <asm/io.h>
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/*
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* There are 2 versions of production Sequoia & Rainier platforms.
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* The primary difference is the reference clock. Those with
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* 33333333 reference clocks will also have 667MHz rated
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* processors. Not enough differences to have unique clock
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* settings.
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*
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* NOR and NAND boot options change bytes 6, 7, 8, 9, 11. The
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* values are independent of the rest of the clock settings.
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*
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* All Sequoias & Rainiers select from two possible EEPROMs in Boot
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* Config F. One for 33MHz PCI, one for 66MHz PCI. The following
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* values are for the 33MHz PCI configuration. Byte 5 (0 base) is
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* the only value affected for a 33MHz PCI and simply needs a | 0x08.
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*/
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#define NAND_COMPATIBLE 0x01
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#define NOR_COMPATIBLE 0x02
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/* check with Stefan on CONFIG_SYS_I2C_EEPROM_ADDR */
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#define I2C_EEPROM_ADDR 0x52
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static char *config_labels[] = {
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"CPU: 333 PLB: 133 OPB: 66 EBC: 66",
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"CPU: 333 PLB: 166 OPB: 83 EBC: 55",
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"CPU: 400 PLB: 133 OPB: 66 EBC: 66",
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"CPU: 400 PLB: 160 OPB: 80 EBC: 53",
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"CPU: 416 PLB: 166 OPB: 83 EBC: 55",
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"CPU: 500 PLB: 166 OPB: 83 EBC: 55",
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"CPU: 533 PLB: 133 OPB: 66 EBC: 66",
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"CPU: 667 PLB: 133 OPB: 66 EBC: 66",
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"CPU: 667 PLB: 166 OPB: 83 EBC: 55",
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NULL
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};
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static u8 boot_configs[][17] = {
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{
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(NOR_COMPATIBLE),
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0x84, 0x70, 0xa2, 0xa6, 0x05, 0x57, 0xa0, 0x10, 0x40,
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0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
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},
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{
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(NAND_COMPATIBLE | NOR_COMPATIBLE),
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0xc7, 0x78, 0xf3, 0x4e, 0x05, 0xd7, 0xa0, 0x30, 0x40,
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0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
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},
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{
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(NOR_COMPATIBLE),
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0x86, 0x78, 0xc2, 0xc6, 0x05, 0x57, 0xa0, 0x30, 0x40,
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0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
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},
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{
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(NOR_COMPATIBLE),
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0x86, 0x78, 0xc2, 0xa6, 0x05, 0xd7, 0xa0, 0x10, 0x40,
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0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
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},
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{
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(NAND_COMPATIBLE | NOR_COMPATIBLE),
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0xc6, 0x78, 0x52, 0xa6, 0x05, 0xd7, 0xa0, 0x10, 0x40,
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0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
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},
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{
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(NAND_COMPATIBLE | NOR_COMPATIBLE),
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0xc7, 0x78, 0x52, 0xc6, 0x05, 0xd7, 0xa0, 0x30, 0x40,
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0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
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},
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{
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(NOR_COMPATIBLE),
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0x87, 0x78, 0x82, 0x52, 0x09, 0x57, 0xa0, 0x30, 0x40,
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0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
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},
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{
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(NOR_COMPATIBLE),
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0x87, 0x78, 0xa2, 0x56, 0x09, 0x57, 0xa0, 0x30, 0x40,
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0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
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},
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{
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(NAND_COMPATIBLE | NOR_COMPATIBLE),
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0x87, 0x78, 0xa2, 0x52, 0x09, 0xd7, 0xa0, 0x30, 0x40,
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0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
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},
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{
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0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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}
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};
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/*
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* Bytes 6,8,9,11 change for NAND boot
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*/
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static u8 nand_boot[] = {
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0xd0, 0xa0, 0x68, 0x58
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};
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static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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u8 *buf, bNAND;
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int x, y, nbytes, selcfg;
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extern char console_buffer[];
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if (argc < 2) {
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cmd_usage(cmdtp);
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return 1;
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}
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if ((strcmp(argv[1], "nor") != 0) &&
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(strcmp(argv[1], "nand") != 0)) {
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printf("Unsupported boot-device - only nor|nand support\n");
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return 1;
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}
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/* set the nand flag based on provided input */
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if ((strcmp(argv[1], "nand") == 0))
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bNAND = 1;
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else
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bNAND = 0;
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printf("Available configurations: \n\n");
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if (bNAND) {
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for(x = 0, y = 0; boot_configs[x][0] != 0; x++) {
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/* filter on nand compatible */
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if (boot_configs[x][0] & NAND_COMPATIBLE) {
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printf(" %d - %s\n", (y+1), config_labels[x]);
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y++;
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}
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}
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} else {
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for(x = 0, y = 0; boot_configs[x][0] != 0; x++) {
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/* filter on nor compatible */
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if (boot_configs[x][0] & NOR_COMPATIBLE) {
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printf(" %d - %s\n", (y+1), config_labels[x]);
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y++;
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}
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}
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}
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do {
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nbytes = readline(" Selection [1-x / quit]: ");
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if (nbytes) {
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if (strcmp(console_buffer, "quit") == 0)
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return 0;
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selcfg = simple_strtol(console_buffer, NULL, 10);
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if ((selcfg < 1) || (selcfg > y))
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nbytes = 0;
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}
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} while (nbytes == 0);
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y = (selcfg - 1);
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for (x = 0; boot_configs[x][0] != 0; x++) {
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if (bNAND) {
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if (boot_configs[x][0] & NAND_COMPATIBLE) {
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if (y > 0)
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y--;
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else if (y < 1)
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break;
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}
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} else {
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if (boot_configs[x][0] & NOR_COMPATIBLE) {
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if (y > 0)
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y--;
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else if (y < 1)
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break;
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}
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}
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}
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buf = &boot_configs[x][1];
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if (bNAND) {
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buf[6] = nand_boot[0];
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buf[8] = nand_boot[1];
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buf[9] = nand_boot[2];
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buf[11] = nand_boot[3];
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}
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/* check CPLD register +5 for PCI 66MHz flag */
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if ((in_8((void *)(CONFIG_SYS_BCSR_BASE + 5)) & CONFIG_SYS_BCSR5_PCI66EN) == 0)
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/*
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* PLB-to-PCI divisor = 3 for 33MHz sync PCI
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* instead of 2 for 66MHz systems
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*/
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buf[5] |= 0x08;
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if (i2c_write(I2C_EEPROM_ADDR, 0, 1, buf, 16) != 0)
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printf("Error writing to EEPROM at address 0x%x\n", I2C_EEPROM_ADDR);
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udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
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printf("Done\n");
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printf("Please power-cycle the board for the changes to take effect\n");
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return 0;
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}
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U_BOOT_CMD(
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bootstrap, 2, 0, do_bootstrap,
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"program the I2C bootstrap EEPROM",
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"<nand|nor> - strap to boot from NAND or NOR flash"
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);
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