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https://github.com/Ysurac/openmptcprouter.git
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Fix for RUTX platform
This commit is contained in:
Ycarus (Yannick Chabanois)
parent
ccdb64ad45
commit
59bc57d5d5
7254 changed files with 1810270 additions and 7 deletions
238
root/package/utils/sysupgrade-helper/src/common/cmd_otp.c
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238
root/package/utils/sysupgrade-helper/src/common/cmd_otp.c
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/*
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* cmd_otp.c - interface to Blackfin on-chip One-Time-Programmable memory
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*
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* Copyright (c) 2007-2008 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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/* There are 512 128-bit "pages" (0x000 through 0x1FF).
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* The pages are accessable as 64-bit "halfpages" (an upper and lower half).
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* The pages are not part of the memory map. There is an OTP controller which
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* handles scanning in/out of bits. While access is done through OTP MMRs,
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* the bootrom provides C-callable helper functions to handle the interaction.
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*/
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#include <config.h>
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#include <common.h>
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#include <command.h>
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#include <asm/blackfin.h>
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#include <asm/mach-common/bits/otp.h>
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static const char *otp_strerror(uint32_t err)
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{
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switch (err) {
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case 0: return "no error";
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case OTP_WRITE_ERROR: return "OTP fuse write error";
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case OTP_READ_ERROR: return "OTP fuse read error";
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case OTP_ACC_VIO_ERROR: return "invalid OTP address";
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case OTP_DATA_MULT_ERROR: return "multiple bad bits detected";
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case OTP_ECC_MULT_ERROR: return "error in ECC bits";
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case OTP_PREV_WR_ERROR: return "space already written";
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case OTP_DATA_SB_WARN: return "single bad bit in half page";
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case OTP_ECC_SB_WARN: return "single bad bit in ECC";
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default: return "unknown error";
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}
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}
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#define lowup(x) ((x) % 2 ? "upper" : "lower")
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static int check_voltage(void)
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{
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/* Make sure voltage limits are within datasheet spec */
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uint16_t vr_ctl = bfin_read_VR_CTL();
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#ifdef __ADSPBF54x__
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/* 0.9V <= VDDINT <= 1.1V */
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if ((vr_ctl & 0xc) && (vr_ctl & 0xc0) == 0xc0)
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return 1;
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#else
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/* for the parts w/out qualification yet */
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(void)vr_ctl;
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#endif
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return 0;
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}
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static void set_otp_timing(bool write)
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{
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static uint32_t timing;
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if (!timing) {
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uint32_t tp1, tp2, tp3;
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/* OTP_TP1 = 1000 / sclk_period (in nanoseconds)
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* OTP_TP1 = 1000 / (1 / get_sclk() * 10^9)
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* OTP_TP1 = (1000 * get_sclk()) / 10^9
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* OTP_TP1 = get_sclk() / 10^6
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*/
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tp1 = get_sclk() / 1000000;
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/* OTP_TP2 = 400 / (2 * sclk_period)
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* OTP_TP2 = 400 / (2 * 1 / get_sclk() * 10^9)
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* OTP_TP2 = (400 * get_sclk()) / (2 * 10^9)
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* OTP_TP2 = (2 * get_sclk()) / 10^7
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*/
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tp2 = (2 * get_sclk() / 10000000) << 8;
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/* OTP_TP3 = magic constant */
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tp3 = (0x1401) << 15;
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timing = tp1 | tp2 | tp3;
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}
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bfrom_OtpCommand(OTP_INIT, write ? timing : timing & ~(-1 << 15));
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}
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int do_otp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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char *cmd;
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uint32_t ret, base_flags;
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bool prompt_user, force_read;
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uint32_t (*otp_func)(uint32_t page, uint32_t flags, uint64_t *page_content);
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if (argc < 4) {
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usage:
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return CMD_RET_USAGE;
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}
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prompt_user = false;
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base_flags = 0;
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cmd = argv[1];
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if (!strcmp(cmd, "read"))
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otp_func = bfrom_OtpRead;
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else if (!strcmp(cmd, "dump")) {
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otp_func = bfrom_OtpRead;
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force_read = true;
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} else if (!strcmp(cmd, "write")) {
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otp_func = bfrom_OtpWrite;
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base_flags = OTP_CHECK_FOR_PREV_WRITE;
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if (!strcmp(argv[2], "--force")) {
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argv++;
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--argc;
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} else
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prompt_user = false;
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} else if (!strcmp(cmd, "lock")) {
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if (argc != 4)
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goto usage;
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otp_func = bfrom_OtpWrite;
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base_flags = OTP_LOCK;
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} else
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goto usage;
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uint64_t *addr = (uint64_t *)simple_strtoul(argv[2], NULL, 16);
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uint32_t page = simple_strtoul(argv[3], NULL, 16);
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uint32_t flags;
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size_t i, count;
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ulong half;
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if (argc > 4)
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count = simple_strtoul(argv[4], NULL, 16);
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else
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count = 2;
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if (argc > 5) {
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half = simple_strtoul(argv[5], NULL, 16);
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if (half != 0 && half != 1) {
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puts("Error: 'half' can only be '0' or '1'\n");
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goto usage;
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}
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} else
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half = 0;
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/* "otp lock" has slightly different semantics */
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if (base_flags & OTP_LOCK) {
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count = page;
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page = (uint32_t)addr;
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addr = NULL;
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}
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/* do to the nature of OTP, make sure users are sure */
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if (prompt_user) {
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printf(
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"Writing one time programmable memory\n"
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"Make sure your operating voltages and temperature are within spec\n"
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" source address: 0x%p\n"
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" OTP destination: %s page 0x%03X - %s page 0x%03lX\n"
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" number to write: %lu halfpages\n"
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" type \"YES\" (no quotes) to confirm: ",
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addr,
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lowup(half), page,
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lowup(half + count - 1), page + (half + count - 1) / 2,
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half + count
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);
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i = 0;
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while (1) {
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if (tstc()) {
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const char exp_ans[] = "YES\r";
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char c;
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putc(c = getc());
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if (exp_ans[i++] != c) {
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printf(" Aborting\n");
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return 1;
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} else if (!exp_ans[i]) {
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puts("\n");
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break;
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}
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}
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}
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}
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printf("OTP memory %s: addr 0x%p page 0x%03X count %zu ... ",
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cmd, addr, page, count);
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set_otp_timing(otp_func == bfrom_OtpWrite);
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if (otp_func == bfrom_OtpWrite && check_voltage()) {
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puts("ERROR: VDDINT voltage is out of spec for writing\n");
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return -1;
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}
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/* Do the actual reading/writing stuff */
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ret = 0;
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for (i = half; i < count + half; ++i) {
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flags = base_flags | (i % 2 ? OTP_UPPER_HALF : OTP_LOWER_HALF);
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try_again:
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ret = otp_func(page, flags, addr);
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if (ret & OTP_MASTER_ERROR) {
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if (force_read) {
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if (flags & OTP_NO_ECC)
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break;
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else
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flags |= OTP_NO_ECC;
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puts("E");
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goto try_again;
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} else
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break;
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} else if (ret)
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puts("W");
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else
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puts(".");
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if (!(base_flags & OTP_LOCK)) {
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++addr;
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if (i % 2)
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++page;
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} else
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++page;
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}
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if (ret & 0x1)
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printf("\nERROR at page 0x%03X (%s-halfpage): 0x%03X: %s\n",
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page, lowup(i), ret, otp_strerror(ret));
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else
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puts(" done\n");
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/* Make sure we disable writing */
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set_otp_timing(false);
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bfrom_OtpCommand(OTP_CLOSE, 0);
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return ret;
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}
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U_BOOT_CMD(
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otp, 7, 0, do_otp,
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"One-Time-Programmable sub-system",
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"read <addr> <page> [count] [half]\n"
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" - read 'count' half-pages starting at 'page' (offset 'half') to 'addr'\n"
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"otp dump <addr> <page> [count] [half]\n"
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" - like 'otp read', but skip read errors\n"
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"otp write [--force] <addr> <page> [count] [half]\n"
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" - write 'count' half-pages starting at 'page' (offset 'half') from 'addr'\n"
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"otp lock <page> <count>\n"
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" - lock 'count' pages starting at 'page'"
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);
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