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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>
394 lines
10 KiB
C
394 lines
10 KiB
C
/*
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* Copyright 2008 Silicon Turnkey Express, Inc.
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* Martha Marx <mmarx@silicontkx.com>
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*
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* ADS5121 IIM (Fusebox) Interface
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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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#include <common.h>
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#include <command.h>
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#include <asm/io.h>
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#ifdef CONFIG_CMD_FUSE
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DECLARE_GLOBAL_DATA_PTR;
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static char cur_bank = '1';
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char *iim_err_msg(u32 err)
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{
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static char *IIM_errs[] = {
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"Parity Error in cache",
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"Explicit Sense Cycle Error",
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"Write to Locked Register Error",
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"Read Protect Error",
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"Override Protect Error",
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"Write Protect Error"};
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int i;
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if (!err)
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return "";
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for (i = 1; i < 8; i++)
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if (err & (1 << i))
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printf("IIM - %s\n", IIM_errs[i-1]);
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return "";
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}
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int in_range(int n, int min, int max, char *err, char *usg)
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{
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if (n > max || n < min) {
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printf(err);
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printf("Usage:\n%s\n", usg);
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return 0;
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}
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return 1;
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}
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int ads5121_fuse_read(int bank, int fstart, int num)
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{
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iim512x_t *iim = &((immap_t *) CONFIG_SYS_IMMR)->iim;
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u32 *iim_fb, dummy;
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int f, ctr;
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out_be32(&iim->err, in_be32(&iim->err));
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if (bank == 0)
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iim_fb = (u32 *)&(iim->fbac0);
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else
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iim_fb = (u32 *)&(iim->fbac1);
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/* try a read to see if Read Protect is set */
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dummy = in_be32(&iim_fb[0]);
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if (in_be32(&iim->err) & IIM_ERR_RPE) {
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printf("\tRead protect fuse is set\n");
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out_be32(&iim->err, IIM_ERR_RPE);
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return 0;
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}
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printf("Reading Bank %d cache\n", bank);
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for (f = fstart, ctr = 0; num > 0; ctr++, num--, f++) {
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if (ctr % 4 == 0)
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printf("F%2d:", f);
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printf("\t%#04x", (u8)(iim_fb[f]));
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if (ctr % 4 == 3)
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printf("\n");
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}
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if (ctr % 4 != 0)
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printf("\n");
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}
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int ads5121_fuse_override(int bank, int f, u8 val)
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{
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iim512x_t *iim = &((immap_t *) CONFIG_SYS_IMMR)->iim;
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u32 *iim_fb;
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u32 iim_stat;
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int i;
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out_be32(&iim->err, in_be32(&iim->err));
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if (bank == 0)
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iim_fb = (u32 *)&(iim->fbac0);
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else
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iim_fb = (u32 *)&(iim->fbac1);
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/* try a read to see if Read Protect is set */
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iim_stat = in_be32(&iim_fb[0]);
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if (in_be32(&iim->err) & IIM_ERR_RPE) {
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printf("Read protect fuse is set on bank %d;"
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"Override protect may also be set\n", bank);
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printf("An attempt will be made to override\n");
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out_be32(&iim->err, IIM_ERR_RPE);
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}
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if (iim_stat & IIM_FBAC_FBOP) {
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printf("Override protect fuse is set on bank %d\n", bank);
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return 1;
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}
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if (f > IIM_FMAX) /* reset the entire bank */
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for (i = 0; i < IIM_FMAX + 1; i++)
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out_be32(&iim_fb[i], 0);
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else
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out_be32(&iim_fb[f], val);
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return 0;
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}
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int ads5121_fuse_prog(cmd_tbl_t *cmdtp, int bank, char *fuseno_bitno)
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{
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iim512x_t *iim = &((immap_t *) CONFIG_SYS_IMMR)->iim;
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int f, i, bitno;
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u32 stat, err;
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f = simple_strtol(fuseno_bitno, NULL, 10);
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if (f == 0 && fuseno_bitno[0] != '0')
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f = -1;
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if (!in_range(f, 0, IIM_FMAX,
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"<frow> must be between 0-31\n\n", cmdtp->usage))
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return 1;
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bitno = -1;
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for (i = 0; i < 6; i++) {
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if (fuseno_bitno[i] == '_') {
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bitno = simple_strtol(&(fuseno_bitno[i+1]), NULL, 10);
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if (bitno == 0 && fuseno_bitno[i+1] != '0')
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bitno = -1;
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break;
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}
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}
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if (!in_range(bitno, 0, 7, "Bit number ranges from 0-7\n"
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"Example of <frow_bitno>: \"18_4\" sets bit 4 of row 18\n",
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cmdtp->usage))
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return 1;
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out_be32(&iim->err, in_be32(&iim->err));
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out_be32(&iim->prg_p, IIM_PRG_P_SET);
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out_be32(&iim->ua, IIM_SET_UA(bank, f));
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out_be32(&iim->la, IIM_SET_LA(f, bitno));
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#ifdef DEBUG
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printf("Programming disabled with DEBUG defined \n");
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printf(""Set up to pro
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printf("iim.ua = %x; iim.la = %x\n", iim->ua, iim->la);
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#else
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out_be32(&iim->fctl, IIM_FCTL_PROG_PULSE | IIM_FCTL_PROG);
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do
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udelay(20);
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while ((stat = in_be32(&iim->stat)) & IIM_STAT_BUSY);
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out_be32(&iim->prg_p, 0);
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err = in_be32(&iim->err);
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if (stat & IIM_STAT_PRGD) {
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if (!(err & (IIM_ERR_WPE | IIM_ERR_WPE))) {
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printf("Fuse is successfully set");
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if (err)
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printf(" - however there are other errors");
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printf("\n");
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}
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iim->stat = 0;
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}
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if (err) {
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iim_err_msg(err);
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out_be32(&iim->err, in_be32(&iim->err));
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}
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#endif
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}
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int ads5121_fuse_sense(int bank, int fstart, int num)
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{
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iim512x_t *iim = &((immap_t *) CONFIG_SYS_IMMR)->iim;
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u32 iim_fbac;
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u32 stat, err, err_hold = 0;
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int f, ctr;
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out_be32(&iim->err, in_be32(&iim->err));
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if (bank == 0)
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iim_fbac = in_be32(&iim->fbac0);
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else
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iim_fbac = in_be32(&iim->fbac1);
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if (iim_fbac & IIM_FBAC_FBESP) {
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printf("\tSense Protect disallows this operation\n");
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out_be32(&iim->err, IIM_FBAC_FBESP);
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return 1;
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}
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err = in_be32(&iim->err);
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if (err) {
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iim_err_msg(err);
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err_hold |= err;
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}
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if (err & IIM_ERR_RPE)
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printf("\tRead protect fuse is set; "
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"Sense Protect may be set but will be attempted\n");
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if (err)
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out_be32(&iim->err, err);
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printf("Sensing fuse(s) on Bank %d\n", bank);
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for (f = fstart, ctr = 0; num > 0; ctr++, f++, num--) {
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out_be32(&iim->ua, IIM_SET_UA(bank, f));
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out_be32(&iim->la, IIM_SET_LA(f, 0));
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out_be32(&iim->fctl, IIM_FCTL_ESNS_N);
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do
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udelay(20);
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while ((stat = in_be32(&iim->stat)) & IIM_STAT_BUSY);
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err = in_be32(&iim->err);
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if (err & IIM_ERR_SNSE) {
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iim_err_msg(err);
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out_be32(&iim->err, IIM_ERR_SNSE);
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return 1;
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}
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if (stat & IIM_STAT_SNSD) {
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out_be32(&iim->stat, 0);
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if (ctr % 4 == 0)
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printf("F%2d:", f);
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printf("\t%#04x", (u8)iim->sdat);
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if (ctr % 4 == 3)
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printf("\n");
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}
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if (err) {
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err_hold |= err;
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out_be32(&iim->err, err);
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}
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}
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if (ctr % 4 != 0)
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printf("\n");
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if (err_hold)
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iim_err_msg(err_hold);
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return 0;
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}
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int ads5121_fuse_stat(int bank)
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{
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iim512x_t *iim = &((immap_t *) CONFIG_SYS_IMMR)->iim;
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u32 iim_fbac;
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u32 err;
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out_be32(&iim->err, in_be32(&iim->err));
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if (bank == 0)
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iim_fbac = in_be32(&iim->fbac0);
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else
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iim_fbac = in_be32(&iim->fbac1);
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err = in_be32(&iim->err);
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if (err)
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iim_err_msg(err);
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if (err & IIM_ERR_RPE || iim_fbac & IIM_FBAC_FBRP) {
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if (iim_fbac == 0)
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printf("Since protection settings can't be read - "
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"try sensing fuse row 0;\n");
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return 0;
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}
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if (iim_fbac & IIM_PROTECTION)
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printf("Protection Fuses Bank %d = %#04x:\n", bank, iim_fbac);
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else if (!(err & IIM_ERR_RPE))
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printf("No Protection fuses are set\n");
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if (iim_fbac & IIM_FBAC_FBWP)
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printf("\tWrite Protect fuse is set\n");
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if (iim_fbac & IIM_FBAC_FBOP)
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printf("\tOverride Protect fuse is set\n");
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if (iim_fbac & IIM_FBAC_FBESP)
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printf("\tSense Protect Fuse is set\n");
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out_be32(&iim->err, in_be32(&iim->err));
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return 0;
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}
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int do_ads5121_fuse(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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int frow, n, v, bank;
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if (cur_bank == '0')
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bank = 0;
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else
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bank = 1;
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switch (argc) {
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case 0:
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case 1:
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printf("Usage:\n%s\n", cmdtp->usage);
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return 1;
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case 2:
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if (strncmp(argv[1], "stat", 4) == 0)
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return ads5121_fuse_stat(bank);
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if (strncmp(argv[1], "read", 4) == 0)
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return ads5121_fuse_read(bank, 0, IIM_FMAX + 1);
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if (strncmp(argv[1], "sense", 5) == 0)
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return ads5121_fuse_sense(bank, 0, IIM_FMAX + 1);
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if (strncmp(argv[1], "ovride", 6) == 0)
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return ads5121_fuse_override(bank, IIM_FMAX + 1, 0);
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if (strncmp(argv[1], "bank", 4) == 0) {
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printf("Active Fuse Bank is %c\n", cur_bank);
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return 0;
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}
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printf("Usage:\n%s\n", cmdtp->usage);
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return 1;
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case 3:
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if (strncmp(argv[1], "bank", 4) == 0) {
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if (argv[2][0] == '0')
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cur_bank = '0';
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else if (argv[2][0] == '1')
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cur_bank = '1';
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else {
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printf("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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printf("Setting Active Fuse Bank to %c\n", cur_bank);
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return 0;
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}
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if (strncmp(argv[1], "prog", 4) == 0)
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return ads5121_fuse_prog(cmdtp, bank, argv[2]);
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frow = (int)simple_strtol(argv[2], NULL, 10);
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if (frow == 0 && argv[2][0] != '0')
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frow = -1;
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if (!in_range(frow, 0, IIM_FMAX,
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"<frow> must be between 0-31\n\n", cmdtp->usage))
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return 1;
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if (strncmp(argv[1], "read", 4) == 0)
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return ads5121_fuse_read(bank, frow, 1);
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if (strncmp(argv[1], "ovride", 6) == 0)
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return ads5121_fuse_override(bank, frow, 0);
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if (strncmp(argv[1], "sense", 5) == 0)
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return ads5121_fuse_sense(bank, frow, 1);
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printf("Usage:\n%s\n", cmdtp->usage);
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return 1;
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case 4:
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frow = (int)simple_strtol(argv[2], NULL, 10);
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if (frow == 0 && argv[2][0] != '0')
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frow = -1;
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if (!in_range(frow, 0, IIM_FMAX,
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"<frow> must be between 0-31\n\n", cmdtp->usage))
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return 1;
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if (strncmp(argv[1], "read", 4) == 0) {
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n = (int)simple_strtol(argv[3], NULL, 10);
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if (!in_range(frow + n, frow + 1, IIM_FMAX + 1,
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"<frow>+<n> must be between 1-32\n\n",
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cmdtp->usage))
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return 1;
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return ads5121_fuse_read(bank, frow, n);
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}
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if (strncmp(argv[1], "ovride", 6) == 0) {
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v = (int)simple_strtol(argv[3], NULL, 10);
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return ads5121_fuse_override(bank, frow, v);
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}
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if (strncmp(argv[1], "sense", 5) == 0) {
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n = (int)simple_strtol(argv[3], NULL, 10);
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if (!in_range(frow + n, frow + 1, IIM_FMAX + 1,
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"<frow>+<n> must be between 1-32\n\n",
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cmdtp->usage))
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return 1;
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return ads5121_fuse_sense(bank, frow, n);
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}
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printf("Usage:\n%s\n", cmdtp->usage);
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return 1;
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default: /* at least 5 args */
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printf("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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}
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U_BOOT_CMD(
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fuse, CONFIG_SYS_MAXARGS, 0, do_ads5121_fuse,
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" - Read, Sense, Override or Program Fuses\n",
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"bank <n> - sets active Fuse Bank to 0 or 1\n"
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" no args shows current active bank\n"
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"fuse stat - print active fuse bank's protection status\n"
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"fuse read [<frow> [<n>]] - print <n> fuse rows starting at <frow>\n"
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" no args to print entire bank's fuses\n"
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"fuse ovride [<frow> [<v>]]- override fuses at <frow> with <v>\n"
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" no <v> defaults to 0 for the row\n"
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" no args resets entire bank to 0\n"
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" NOTE - settings persist until hard reset\n"
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"fuse sense [<frow>] - senses current fuse at <frow>\n"
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" no args for entire bank\n"
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"fuse prog <frow_bit> - program fuse at row <frow>, bit <_bit>\n"
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" <frow> is 0-31, <bit> is 0-7; eg. 13_2 \n"
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" WARNING - this is permanent"
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);
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#endif /* CONFIG_CMD_FUSE */
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