+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2013 ADVANSEE
* Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
* http://git.freescale.com/git/cgit.cgi/imx/uboot-imx.git/tree/drivers/misc/imx_otp.c?h=imx_v2009.08_1.1.0&id=9aa74e6,
* which is:
* Copyright (C) 2011 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
-#include <asm/imx-common/sys_proto.h>
+#include <asm/mach-imx/sys_proto.h>
#define BO_CTRL_WR_UNLOCK 16
#define BM_CTRL_WR_UNLOCK 0xffff0000
#define BM_OUT_STATUS_DED 0x00000400
#define BM_OUT_STATUS_LOCKED 0x00000800
#define BM_OUT_STATUS_PROGFAIL 0x00001000
+#elif defined(CONFIG_MX8M)
+#define BM_CTRL_ADDR 0x000000ff
#else
#define BM_CTRL_ADDR 0x0000007f
#endif
#elif defined(CONFIG_MX7ULP)
#define FUSE_BANK_SIZE 0x80
#define FUSE_BANKS 31
+#elif defined(CONFIG_MX8M)
+#define FUSE_BANK_SIZE 0x40
+#define FUSE_BANKS 64
#else
#error "Unsupported architecture\n"
#endif
u32 wr_unlock = write ? BV_CTRL_WR_UNLOCK_KEY : 0;
#ifdef CONFIG_MX7
u32 addr = bank;
+#elif defined CONFIG_MX8M
+ u32 addr = bank << 2 | word;
#else
u32 addr;
/* Bank 7 and Bank 8 only supports 4 words each for i.MX6ULL */
static int prepare_write(struct ocotp_regs **regs, u32 bank, u32 word,
const char *caller)
{
+#ifdef CONFIG_MX7ULP
+ u32 val;
+ int ret;
+
+ /* Only bank 0 and 1 are redundancy mode, others are ECC mode */
+ if (bank != 0 && bank != 1) {
+ ret = fuse_sense(bank, word, &val);
+ if (ret)
+ return ret;
+
+ if (val != 0) {
+ printf("mxc_ocotp: The word has been programmed, no more write\n");
+ return -EPERM;
+ }
+ }
+#endif
+
return prepare_access(regs, bank, word, true, caller);
}