Remove the cmd_ prefix from command files

Now that they are in their own directory, we can remove this prefix.
This makes it easier to find a file since the prefix does not get in the
way.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>

1 files changed, 228 insertions, 0 deletions

diff --git a/cmd/otp.c b/cmd/otp.c
new file mode 100644
index 0000000..10c1475
--- /dev/null
+++ b/cmd/otp.c
@@ -0,0 +1,228 @@
+/*
+ * 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'"
+);