+++ /dev/null
-/*
- * Copyright 2008 Silicon Turnkey Express, Inc.
- * Martha Marx <mmarx@silicontkx.com>
- *
- * ADS5121 IIM (Fusebox) Interface
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <command.h>
-#include <asm/io.h>
-
-#ifdef CONFIG_CMD_FUSE
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static char cur_bank = '1';
-
-char *iim_err_msg(u32 err)
-{
- static char *IIM_errs[] = {
- "Parity Error in cache",
- "Explicit Sense Cycle Error",
- "Write to Locked Register Error",
- "Read Protect Error",
- "Override Protect Error",
- "Write Protect Error"};
-
- int i;
-
- if (!err)
- return "";
- for (i = 1; i < 8; i++)
- if (err & (1 << i))
- printf("IIM - %s\n", IIM_errs[i-1]);
- return "";
-}
-
-int in_range(int n, int min, int max, char *err, char *usg)
-{
- if (n > max || n < min) {
- printf(err);
- printf("Usage:\n%s\n", usg);
- return 0;
- }
- return 1;
-}
-
-int ads5121_fuse_read(int bank, int fstart, int num)
-{
- iim512x_t *iim = &((immap_t *) CONFIG_SYS_IMMR)->iim;
- u32 *iim_fb, dummy;
- int f, ctr;
-
- out_be32(&iim->err, in_be32(&iim->err));
- if (bank == 0)
- iim_fb = (u32 *)&(iim->fbac0);
- else
- iim_fb = (u32 *)&(iim->fbac1);
-/* try a read to see if Read Protect is set */
- dummy = in_be32(&iim_fb[0]);
- if (in_be32(&iim->err) & IIM_ERR_RPE) {
- printf("\tRead protect fuse is set\n");
- out_be32(&iim->err, IIM_ERR_RPE);
- return 0;
- }
- printf("Reading Bank %d cache\n", bank);
- for (f = fstart, ctr = 0; num > 0; ctr++, num--, f++) {
- if (ctr % 4 == 0)
- printf("F%2d:", f);
- printf("\t%#04x", (u8)(iim_fb[f]));
- if (ctr % 4 == 3)
- printf("\n");
- }
- if (ctr % 4 != 0)
- printf("\n");
-}
-
-int ads5121_fuse_override(int bank, int f, u8 val)
-{
- iim512x_t *iim = &((immap_t *) CONFIG_SYS_IMMR)->iim;
- u32 *iim_fb;
- u32 iim_stat;
- int i;
-
- out_be32(&iim->err, in_be32(&iim->err));
- if (bank == 0)
- iim_fb = (u32 *)&(iim->fbac0);
- else
- iim_fb = (u32 *)&(iim->fbac1);
-/* try a read to see if Read Protect is set */
- iim_stat = in_be32(&iim_fb[0]);
- if (in_be32(&iim->err) & IIM_ERR_RPE) {
- printf("Read protect fuse is set on bank %d;"
- "Override protect may also be set\n", bank);
- printf("An attempt will be made to override\n");
- out_be32(&iim->err, IIM_ERR_RPE);
- }
- if (iim_stat & IIM_FBAC_FBOP) {
- printf("Override protect fuse is set on bank %d\n", bank);
- return 1;
- }
- if (f > IIM_FMAX) /* reset the entire bank */
- for (i = 0; i < IIM_FMAX + 1; i++)
- out_be32(&iim_fb[i], 0);
- else
- out_be32(&iim_fb[f], val);
- return 0;
-}
-
-int ads5121_fuse_prog(cmd_tbl_t *cmdtp, int bank, char *fuseno_bitno)
-{
- iim512x_t *iim = &((immap_t *) CONFIG_SYS_IMMR)->iim;
- int f, i, bitno;
- u32 stat, err;
-
- f = simple_strtol(fuseno_bitno, NULL, 10);
- if (f == 0 && fuseno_bitno[0] != '0')
- f = -1;
- if (!in_range(f, 0, IIM_FMAX,
- "<frow> must be between 0-31\n\n", cmdtp->usage))
- return 1;
- bitno = -1;
- for (i = 0; i < 6; i++) {
- if (fuseno_bitno[i] == '_') {
- bitno = simple_strtol(&(fuseno_bitno[i+1]), NULL, 10);
- if (bitno == 0 && fuseno_bitno[i+1] != '0')
- bitno = -1;
- break;
- }
- }
- if (!in_range(bitno, 0, 7, "Bit number ranges from 0-7\n"
- "Example of <frow_bitno>: \"18_4\" sets bit 4 of row 18\n",
- cmdtp->usage))
- return 1;
- out_be32(&iim->err, in_be32(&iim->err));
- out_be32(&iim->prg_p, IIM_PRG_P_SET);
- out_be32(&iim->ua, IIM_SET_UA(bank, f));
- out_be32(&iim->la, IIM_SET_LA(f, bitno));
-#ifdef DEBUG
- printf("Programming disabled with DEBUG defined \n");
- printf(""Set up to pro
- printf("iim.ua = %x; iim.la = %x\n", iim->ua, iim->la);
-#else
- out_be32(&iim->fctl, IIM_FCTL_PROG_PULSE | IIM_FCTL_PROG);
- do
- udelay(20);
- while ((stat = in_be32(&iim->stat)) & IIM_STAT_BUSY);
- out_be32(&iim->prg_p, 0);
- err = in_be32(&iim->err);
- if (stat & IIM_STAT_PRGD) {
- if (!(err & (IIM_ERR_WPE | IIM_ERR_WPE))) {
- printf("Fuse is successfully set");
- if (err)
- printf(" - however there are other errors");
- printf("\n");
- }
- iim->stat = 0;
- }
- if (err) {
- iim_err_msg(err);
- out_be32(&iim->err, in_be32(&iim->err));
- }
-#endif
-}
-
-int ads5121_fuse_sense(int bank, int fstart, int num)
-{
- iim512x_t *iim = &((immap_t *) CONFIG_SYS_IMMR)->iim;
- u32 iim_fbac;
- u32 stat, err, err_hold = 0;
- int f, ctr;
-
- out_be32(&iim->err, in_be32(&iim->err));
- if (bank == 0)
- iim_fbac = in_be32(&iim->fbac0);
- else
- iim_fbac = in_be32(&iim->fbac1);
- if (iim_fbac & IIM_FBAC_FBESP) {
- printf("\tSense Protect disallows this operation\n");
- out_be32(&iim->err, IIM_FBAC_FBESP);
- return 1;
- }
- err = in_be32(&iim->err);
- if (err) {
- iim_err_msg(err);
- err_hold |= err;
- }
- if (err & IIM_ERR_RPE)
- printf("\tRead protect fuse is set; "
- "Sense Protect may be set but will be attempted\n");
- if (err)
- out_be32(&iim->err, err);
- printf("Sensing fuse(s) on Bank %d\n", bank);
- for (f = fstart, ctr = 0; num > 0; ctr++, f++, num--) {
- out_be32(&iim->ua, IIM_SET_UA(bank, f));
- out_be32(&iim->la, IIM_SET_LA(f, 0));
- out_be32(&iim->fctl, IIM_FCTL_ESNS_N);
- do
- udelay(20);
- while ((stat = in_be32(&iim->stat)) & IIM_STAT_BUSY);
- err = in_be32(&iim->err);
- if (err & IIM_ERR_SNSE) {
- iim_err_msg(err);
- out_be32(&iim->err, IIM_ERR_SNSE);
- return 1;
- }
- if (stat & IIM_STAT_SNSD) {
- out_be32(&iim->stat, 0);
- if (ctr % 4 == 0)
- printf("F%2d:", f);
- printf("\t%#04x", (u8)iim->sdat);
- if (ctr % 4 == 3)
- printf("\n");
- }
- if (err) {
- err_hold |= err;
- out_be32(&iim->err, err);
- }
- }
- if (ctr % 4 != 0)
- printf("\n");
- if (err_hold)
- iim_err_msg(err_hold);
-
- return 0;
-}
-
-int ads5121_fuse_stat(int bank)
-{
- iim512x_t *iim = &((immap_t *) CONFIG_SYS_IMMR)->iim;
- u32 iim_fbac;
- u32 err;
-
- out_be32(&iim->err, in_be32(&iim->err));
- if (bank == 0)
- iim_fbac = in_be32(&iim->fbac0);
- else
- iim_fbac = in_be32(&iim->fbac1);
- err = in_be32(&iim->err);
- if (err)
- iim_err_msg(err);
- if (err & IIM_ERR_RPE || iim_fbac & IIM_FBAC_FBRP) {
- if (iim_fbac == 0)
- printf("Since protection settings can't be read - "
- "try sensing fuse row 0;\n");
- return 0;
- }
- if (iim_fbac & IIM_PROTECTION)
- printf("Protection Fuses Bank %d = %#04x:\n", bank, iim_fbac);
- else if (!(err & IIM_ERR_RPE))
- printf("No Protection fuses are set\n");
- if (iim_fbac & IIM_FBAC_FBWP)
- printf("\tWrite Protect fuse is set\n");
- if (iim_fbac & IIM_FBAC_FBOP)
- printf("\tOverride Protect fuse is set\n");
- if (iim_fbac & IIM_FBAC_FBESP)
- printf("\tSense Protect Fuse is set\n");
- out_be32(&iim->err, in_be32(&iim->err));
-
- return 0;
-}
-
-int do_ads5121_fuse(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
- int frow, n, v, bank;
-
- if (cur_bank == '0')
- bank = 0;
- else
- bank = 1;
-
- switch (argc) {
- case 0:
- case 1:
- printf("Usage:\n%s\n", cmdtp->usage);
- return 1;
- case 2:
- if (strncmp(argv[1], "stat", 4) == 0)
- return ads5121_fuse_stat(bank);
- if (strncmp(argv[1], "read", 4) == 0)
- return ads5121_fuse_read(bank, 0, IIM_FMAX + 1);
- if (strncmp(argv[1], "sense", 5) == 0)
- return ads5121_fuse_sense(bank, 0, IIM_FMAX + 1);
- if (strncmp(argv[1], "ovride", 6) == 0)
- return ads5121_fuse_override(bank, IIM_FMAX + 1, 0);
- if (strncmp(argv[1], "bank", 4) == 0) {
- printf("Active Fuse Bank is %c\n", cur_bank);
- return 0;
- }
- printf("Usage:\n%s\n", cmdtp->usage);
- return 1;
- case 3:
- if (strncmp(argv[1], "bank", 4) == 0) {
- if (argv[2][0] == '0')
- cur_bank = '0';
- else if (argv[2][0] == '1')
- cur_bank = '1';
- else {
- printf("Usage:\n%s\n", cmdtp->usage);
- return 1;
- }
-
- printf("Setting Active Fuse Bank to %c\n", cur_bank);
- return 0;
- }
- if (strncmp(argv[1], "prog", 4) == 0)
- return ads5121_fuse_prog(cmdtp, bank, argv[2]);
-
- frow = (int)simple_strtol(argv[2], NULL, 10);
- if (frow == 0 && argv[2][0] != '0')
- frow = -1;
- if (!in_range(frow, 0, IIM_FMAX,
- "<frow> must be between 0-31\n\n", cmdtp->usage))
- return 1;
- if (strncmp(argv[1], "read", 4) == 0)
- return ads5121_fuse_read(bank, frow, 1);
- if (strncmp(argv[1], "ovride", 6) == 0)
- return ads5121_fuse_override(bank, frow, 0);
- if (strncmp(argv[1], "sense", 5) == 0)
- return ads5121_fuse_sense(bank, frow, 1);
- printf("Usage:\n%s\n", cmdtp->usage);
- return 1;
- case 4:
- frow = (int)simple_strtol(argv[2], NULL, 10);
- if (frow == 0 && argv[2][0] != '0')
- frow = -1;
- if (!in_range(frow, 0, IIM_FMAX,
- "<frow> must be between 0-31\n\n", cmdtp->usage))
- return 1;
- if (strncmp(argv[1], "read", 4) == 0) {
- n = (int)simple_strtol(argv[3], NULL, 10);
- if (!in_range(frow + n, frow + 1, IIM_FMAX + 1,
- "<frow>+<n> must be between 1-32\n\n",
- cmdtp->usage))
- return 1;
- return ads5121_fuse_read(bank, frow, n);
- }
- if (strncmp(argv[1], "ovride", 6) == 0) {
- v = (int)simple_strtol(argv[3], NULL, 10);
- return ads5121_fuse_override(bank, frow, v);
- }
- if (strncmp(argv[1], "sense", 5) == 0) {
- n = (int)simple_strtol(argv[3], NULL, 10);
- if (!in_range(frow + n, frow + 1, IIM_FMAX + 1,
- "<frow>+<n> must be between 1-32\n\n",
- cmdtp->usage))
- return 1;
- return ads5121_fuse_sense(bank, frow, n);
- }
- printf("Usage:\n%s\n", cmdtp->usage);
- return 1;
- default: /* at least 5 args */
- printf("Usage:\n%s\n", cmdtp->usage);
- return 1;
- }
-}
-
-U_BOOT_CMD(
- fuse, CONFIG_SYS_MAXARGS, 0, do_ads5121_fuse,
- " - Read, Sense, Override or Program Fuses\n",
- "bank <n> - sets active Fuse Bank to 0 or 1\n"
- " no args shows current active bank\n"
- "fuse stat - print active fuse bank's protection status\n"
- "fuse read [<frow> [<n>]] - print <n> fuse rows starting at <frow>\n"
- " no args to print entire bank's fuses\n"
- "fuse ovride [<frow> [<v>]]- override fuses at <frow> with <v>\n"
- " no <v> defaults to 0 for the row\n"
- " no args resets entire bank to 0\n"
- " NOTE - settings persist until hard reset\n"
- "fuse sense [<frow>] - senses current fuse at <frow>\n"
- " no args for entire bank\n"
- "fuse prog <frow_bit> - program fuse at row <frow>, bit <_bit>\n"
- " <frow> is 0-31, <bit> is 0-7; eg. 13_2 \n"
- " WARNING - this is permanent"
-);
-#endif /* CONFIG_CMD_FUSE */
projects / u-boot / commitdiff