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-rw-r--r--cmd/otp.c228
1 files changed, 0 insertions, 228 deletions
diff --git a/cmd/otp.c b/cmd/otp.c
deleted file mode 100644
index 10c1475c5a..0000000000
--- a/cmd/otp.c
+++ /dev/null
@@ -1,228 +0,0 @@
-/*
- * cmd_otp.c - interface to Blackfin on-chip One-Time-Programmable memory
- *
- * Copyright (c) 2007-2008 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-/* There are 512 128-bit "pages" (0x000 through 0x1FF).
- * The pages are accessable as 64-bit "halfpages" (an upper and lower half).
- * The pages are not part of the memory map. There is an OTP controller which
- * handles scanning in/out of bits. While access is done through OTP MMRs,
- * the bootrom provides C-callable helper functions to handle the interaction.
- */
-
-#include <config.h>
-#include <common.h>
-#include <command.h>
-#include <console.h>
-
-#include <asm/blackfin.h>
-#include <asm/clock.h>
-#include <asm/mach-common/bits/otp.h>
-
-static const char *otp_strerror(uint32_t err)
-{
- switch (err) {
- case 0: return "no error";
- case OTP_WRITE_ERROR: return "OTP fuse write error";
- case OTP_READ_ERROR: return "OTP fuse read error";
- case OTP_ACC_VIO_ERROR: return "invalid OTP address";
- case OTP_DATA_MULT_ERROR: return "multiple bad bits detected";
- case OTP_ECC_MULT_ERROR: return "error in ECC bits";
- case OTP_PREV_WR_ERROR: return "space already written";
- case OTP_DATA_SB_WARN: return "single bad bit in half page";
- case OTP_ECC_SB_WARN: return "single bad bit in ECC";
- default: return "unknown error";
- }
-}
-
-#define lowup(x) ((x) % 2 ? "upper" : "lower")
-
-static int check_voltage(void)
-{
- /* Make sure voltage limits are within datasheet spec */
- uint16_t vr_ctl = bfin_read_VR_CTL();
-
-#ifdef __ADSPBF54x__
- /* 0.9V <= VDDINT <= 1.1V */
- if ((vr_ctl & 0xc) && (vr_ctl & 0xc0) == 0xc0)
- return 1;
-#else
- /* for the parts w/out qualification yet */
- (void)vr_ctl;
-#endif
-
- return 0;
-}
-
-static void set_otp_timing(bool write)
-{
- static uint32_t timing;
- if (!timing) {
- uint32_t tp1, tp2, tp3;
- /* OTP_TP1 = 1000 / sclk_period (in nanoseconds)
- * OTP_TP1 = 1000 / (1 / get_sclk() * 10^9)
- * OTP_TP1 = (1000 * get_sclk()) / 10^9
- * OTP_TP1 = get_sclk() / 10^6
- */
- tp1 = get_sclk() / 1000000;
- /* OTP_TP2 = 400 / (2 * sclk_period)
- * OTP_TP2 = 400 / (2 * 1 / get_sclk() * 10^9)
- * OTP_TP2 = (400 * get_sclk()) / (2 * 10^9)
- * OTP_TP2 = (2 * get_sclk()) / 10^7
- */
- tp2 = (2 * get_sclk() / 10000000) << 8;
- /* OTP_TP3 = magic constant */
- tp3 = (0x1401) << 15;
- timing = tp1 | tp2 | tp3;
- }
-
- bfrom_OtpCommand(OTP_INIT, write ? timing : timing & ~(-1 << 15));
-}
-
-int do_otp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
- char *cmd;
- uint32_t ret, base_flags;
- bool prompt_user, force_read;
- uint32_t (*otp_func)(uint32_t page, uint32_t flags, uint64_t *page_content);
-
- if (argc < 4) {
- usage:
- return CMD_RET_USAGE;
- }
-
- prompt_user = false;
- base_flags = 0;
- cmd = argv[1];
- if (!strcmp(cmd, "read"))
- otp_func = bfrom_OtpRead;
- else if (!strcmp(cmd, "dump")) {
- otp_func = bfrom_OtpRead;
- force_read = true;
- } else if (!strcmp(cmd, "write")) {
- otp_func = bfrom_OtpWrite;
- base_flags = OTP_CHECK_FOR_PREV_WRITE;
- if (!strcmp(argv[2], "--force")) {
- argv++;
- --argc;
- } else
- prompt_user = false;
- } else if (!strcmp(cmd, "lock")) {
- if (argc != 4)
- goto usage;
- otp_func = bfrom_OtpWrite;
- base_flags = OTP_LOCK;
- } else
- goto usage;
-
- uint64_t *addr = (uint64_t *)simple_strtoul(argv[2], NULL, 16);
- uint32_t page = simple_strtoul(argv[3], NULL, 16);
- uint32_t flags;
- size_t i, count;
- ulong half;
-
- if (argc > 4)
- count = simple_strtoul(argv[4], NULL, 16);
- else
- count = 2;
-
- if (argc > 5) {
- half = simple_strtoul(argv[5], NULL, 16);
- if (half != 0 && half != 1) {
- puts("Error: 'half' can only be '0' or '1'\n");
- goto usage;
- }
- } else
- half = 0;
-
- /* "otp lock" has slightly different semantics */
- if (base_flags & OTP_LOCK) {
- count = page;
- page = (uint32_t)addr;
- addr = NULL;
- }
-
- /* do to the nature of OTP, make sure users are sure */
- if (prompt_user) {
- printf(
- "Writing one time programmable memory\n"
- "Make sure your operating voltages and temperature are within spec\n"
- " source address: 0x%p\n"
- " OTP destination: %s page 0x%03X - %s page 0x%03lX\n"
- " number to write: %lu halfpages\n"
- " type \"YES\" (no quotes) to confirm: ",
- addr,
- lowup(half), page,
- lowup(half + count - 1), page + (half + count - 1) / 2,
- half + count
- );
- if (!confirm_yesno()) {
- printf(" Aborting\n");
- return 1;
- }
- }
-
- printf("OTP memory %s: addr 0x%p page 0x%03X count %zu ... ",
- cmd, addr, page, count);
-
- set_otp_timing(otp_func == bfrom_OtpWrite);
- if (otp_func == bfrom_OtpWrite && check_voltage()) {
- puts("ERROR: VDDINT voltage is out of spec for writing\n");
- return -1;
- }
-
- /* Do the actual reading/writing stuff */
- ret = 0;
- for (i = half; i < count + half; ++i) {
- flags = base_flags | (i % 2 ? OTP_UPPER_HALF : OTP_LOWER_HALF);
- try_again:
- ret = otp_func(page, flags, addr);
- if (ret & OTP_MASTER_ERROR) {
- if (force_read) {
- if (flags & OTP_NO_ECC)
- break;
- else
- flags |= OTP_NO_ECC;
- puts("E");
- goto try_again;
- } else
- break;
- } else if (ret)
- puts("W");
- else
- puts(".");
- if (!(base_flags & OTP_LOCK)) {
- ++addr;
- if (i % 2)
- ++page;
- } else
- ++page;
- }
- if (ret & 0x1)
- printf("\nERROR at page 0x%03X (%s-halfpage): 0x%03X: %s\n",
- page, lowup(i), ret, otp_strerror(ret));
- else
- puts(" done\n");
-
- /* Make sure we disable writing */
- set_otp_timing(false);
- bfrom_OtpCommand(OTP_CLOSE, 0);
-
- return ret;
-}
-
-U_BOOT_CMD(
- otp, 7, 0, do_otp,
- "One-Time-Programmable sub-system",
- "read <addr> <page> [count] [half]\n"
- " - read 'count' half-pages starting at 'page' (offset 'half') to 'addr'\n"
- "otp dump <addr> <page> [count] [half]\n"
- " - like 'otp read', but skip read errors\n"
- "otp write [--force] <addr> <page> [count] [half]\n"
- " - write 'count' half-pages starting at 'page' (offset 'half') from 'addr'\n"
- "otp lock <page> <count>\n"
- " - lock 'count' pages starting at 'page'"
-);
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