X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fmisc%2Fmxc_ocotp.c;h=8a100c19bdcc2b3b3c814caf66e01f15f05965ee;hb=2cb5d67c1aceb758033954cc06382367ac89e6ac;hp=0095b471bdc81e9b064855ed949d258abb9cf3cf;hpb=47b8e527448c94d09fc8dbdb6601ea7a605ff955;p=u-boot diff --git a/drivers/misc/mxc_ocotp.c b/drivers/misc/mxc_ocotp.c index 0095b471bd..8a100c19bd 100644 --- a/drivers/misc/mxc_ocotp.c +++ b/drivers/misc/mxc_ocotp.c @@ -9,31 +9,16 @@ * which is: * Copyright (C) 2011 Freescale Semiconductor, Inc. * - * 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 + * SPDX-License-Identifier: GPL-2.0+ */ #include #include -#include +#include #include #include #include +#include #define BO_CTRL_WR_UNLOCK 16 #define BM_CTRL_WR_UNLOCK 0xffff0000 @@ -41,8 +26,21 @@ #define BM_CTRL_ERROR 0x00000200 #define BM_CTRL_BUSY 0x00000100 #define BO_CTRL_ADDR 0 +#ifdef CONFIG_MX7 +#define BM_CTRL_ADDR 0x0000000f +#define BM_CTRL_RELOAD 0x00000400 +#else #define BM_CTRL_ADDR 0x0000007f - +#endif + +#ifdef CONFIG_MX7 +#define BO_TIMING_FSOURCE 12 +#define BM_TIMING_FSOURCE 0x0007f000 +#define BV_TIMING_FSOURCE_NS 1001 +#define BO_TIMING_PROG 0 +#define BM_TIMING_PROG 0x00000fff +#define BV_TIMING_PROG_US 10 +#else #define BO_TIMING_STROBE_READ 16 #define BM_TIMING_STROBE_READ 0x003f0000 #define BV_TIMING_STROBE_READ_NS 37 @@ -52,6 +50,7 @@ #define BO_TIMING_STROBE_PROG 0 #define BM_TIMING_STROBE_PROG 0x00000fff #define BV_TIMING_STROBE_PROG_US 10 +#endif #define BM_READ_CTRL_READ_FUSE 0x00000001 @@ -59,6 +58,89 @@ #define WRITE_POSTAMBLE_US 2 +#if defined(CONFIG_MX6) || defined(CONFIG_VF610) +#define FUSE_BANK_SIZE 0x80 +#ifdef CONFIG_MX6SL +#define FUSE_BANKS 8 +#elif defined(CONFIG_MX6ULL) +#define FUSE_BANKS 9 +#else +#define FUSE_BANKS 16 +#endif +#elif defined CONFIG_MX7 +#define FUSE_BANK_SIZE 0x40 +#define FUSE_BANKS 16 +#else +#error "Unsupported architecture\n" +#endif + +#if defined(CONFIG_MX6) + +/* + * There is a hole in shadow registers address map of size 0x100 + * between bank 5 and bank 6 on iMX6QP, iMX6DQ, iMX6SDL, iMX6SX, + * iMX6UL and i.MX6ULL. + * Bank 5 ends at 0x6F0 and Bank 6 starts at 0x800. When reading the fuses, + * we should account for this hole in address space. + * + * Similar hole exists between bank 14 and bank 15 of size + * 0x80 on iMX6QP, iMX6DQ, iMX6SDL and iMX6SX. + * Note: iMX6SL has only 0-7 banks and there is no hole. + * Note: iMX6UL doesn't have this one. + * + * This function is to covert user input to physical bank index. + * Only needed when read fuse, because we use register offset, so + * need to calculate real register offset. + * When write, no need to consider hole, always use the bank/word + * index from fuse map. + */ +u32 fuse_bank_physical(int index) +{ + u32 phy_index; + + if (is_mx6sl()) { + phy_index = index; + } else if (is_mx6ul() || is_mx6ull()) { + if (is_mx6ull() && index == 8) + index = 7; + + if (index >= 6) + phy_index = fuse_bank_physical(5) + (index - 6) + 3; + else + phy_index = index; + } else { + if (index >= 15) + phy_index = fuse_bank_physical(14) + (index - 15) + 2; + else if (index >= 6) + phy_index = fuse_bank_physical(5) + (index - 6) + 3; + else + phy_index = index; + } + return phy_index; +} + +u32 fuse_word_physical(u32 bank, u32 word_index) +{ + if (is_mx6ull()) { + if (bank == 8) + word_index = word_index + 4; + } + + return word_index; +} +#else +u32 fuse_bank_physical(int index) +{ + return index; +} + +u32 fuse_word_physical(u32 bank, u32 word_index) +{ + return word_index; +} + +#endif + static void wait_busy(struct ocotp_regs *regs, unsigned int delay_us) { while (readl(®s->ctrl) & BM_CTRL_BUSY) @@ -75,13 +157,21 @@ static int prepare_access(struct ocotp_regs **regs, u32 bank, u32 word, { *regs = (struct ocotp_regs *)OCOTP_BASE_ADDR; - if (bank >= ARRAY_SIZE((*regs)->bank) || - word >= ARRAY_SIZE((*regs)->bank[0].fuse_regs) >> 2 || - !assert) { + if (bank >= FUSE_BANKS || + word >= ARRAY_SIZE((*regs)->bank[0].fuse_regs) >> 2 || + !assert) { printf("mxc_ocotp %s(): Invalid argument\n", caller); return -EINVAL; } + if (is_mx6ull()) { + if ((bank == 7 || bank == 8) && + word >= ARRAY_SIZE((*regs)->bank[0].fuse_regs) >> 3) { + printf("mxc_ocotp %s(): Invalid argument on 6ULL\n", caller); + return -EINVAL; + } + } + enable_ocotp_clk(1); wait_busy(*regs, 1); @@ -97,8 +187,6 @@ static int finish_access(struct ocotp_regs *regs, const char *caller) err = !!(readl(®s->ctrl) & BM_CTRL_ERROR); clear_error(regs); - enable_ocotp_clk(0); - if (err) { printf("mxc_ocotp %s(): Access protect error\n", caller); return -EIO; @@ -117,16 +205,40 @@ int fuse_read(u32 bank, u32 word, u32 *val) { struct ocotp_regs *regs; int ret; + u32 phy_bank; + u32 phy_word; ret = prepare_read(®s, bank, word, val, __func__); if (ret) return ret; - *val = readl(®s->bank[bank].fuse_regs[word << 2]); + phy_bank = fuse_bank_physical(bank); + phy_word = fuse_word_physical(bank, word); + + *val = readl(®s->bank[phy_bank].fuse_regs[phy_word << 2]); return finish_access(regs, __func__); } +#ifdef CONFIG_MX7 +static void set_timing(struct ocotp_regs *regs) +{ + u32 ipg_clk; + u32 fsource, prog; + u32 timing; + + ipg_clk = mxc_get_clock(MXC_IPG_CLK); + + fsource = DIV_ROUND_UP((ipg_clk / 1000) * BV_TIMING_FSOURCE_NS, + + 1000000) + 1; + prog = DIV_ROUND_CLOSEST(ipg_clk * BV_TIMING_PROG_US, 1000000) + 1; + + timing = BF(fsource, TIMING_FSOURCE) | BF(prog, TIMING_PROG); + + clrsetbits_le32(®s->timing, BM_TIMING_FSOURCE | BM_TIMING_PROG, + timing); +} +#else static void set_timing(struct ocotp_regs *regs) { u32 ipg_clk; @@ -138,8 +250,8 @@ static void set_timing(struct ocotp_regs *regs) relax = DIV_ROUND_UP(ipg_clk * BV_TIMING_RELAX_NS, 1000000000) - 1; strobe_read = DIV_ROUND_UP(ipg_clk * BV_TIMING_STROBE_READ_NS, 1000000000) + 2 * (relax + 1) - 1; - strobe_prog = DIV_ROUND(ipg_clk * BV_TIMING_STROBE_PROG_US, 1000000) + - 2 * (relax + 1) - 1; + strobe_prog = DIV_ROUND_CLOSEST(ipg_clk * BV_TIMING_STROBE_PROG_US, + 1000000) + 2 * (relax + 1) - 1; timing = BF(strobe_read, TIMING_STROBE_READ) | BF(relax, TIMING_RELAX) | @@ -148,12 +260,23 @@ static void set_timing(struct ocotp_regs *regs) clrsetbits_le32(®s->timing, BM_TIMING_STROBE_READ | BM_TIMING_RELAX | BM_TIMING_STROBE_PROG, timing); } +#endif static void setup_direct_access(struct ocotp_regs *regs, u32 bank, u32 word, int write) { u32 wr_unlock = write ? BV_CTRL_WR_UNLOCK_KEY : 0; - u32 addr = bank << 3 | word; +#ifdef CONFIG_MX7 + u32 addr = bank; +#else + u32 addr; + /* Bank 7 and Bank 8 only supports 4 words each for i.MX6ULL */ + if ((is_mx6ull()) && (bank > 7)) { + bank = bank - 1; + word += 4; + } + addr = bank << 3 | word; +#endif set_timing(regs); clrsetbits_le32(®s->ctrl, BM_CTRL_WR_UNLOCK | BM_CTRL_ADDR, @@ -173,7 +296,11 @@ int fuse_sense(u32 bank, u32 word, u32 *val) setup_direct_access(regs, bank, word, false); writel(BM_READ_CTRL_READ_FUSE, ®s->read_ctrl); wait_busy(regs, 1); +#ifdef CONFIG_MX7 + *val = readl((®s->read_fuse_data0) + (word << 2)); +#else *val = readl(®s->read_fuse_data); +#endif return finish_access(regs, __func__); } @@ -194,8 +321,38 @@ int fuse_prog(u32 bank, u32 word, u32 val) return ret; setup_direct_access(regs, bank, word, true); +#ifdef CONFIG_MX7 + switch (word) { + case 0: + writel(0, ®s->data1); + writel(0, ®s->data2); + writel(0, ®s->data3); + writel(val, ®s->data0); + break; + case 1: + writel(val, ®s->data1); + writel(0, ®s->data2); + writel(0, ®s->data3); + writel(0, ®s->data0); + break; + case 2: + writel(0, ®s->data1); + writel(val, ®s->data2); + writel(0, ®s->data3); + writel(0, ®s->data0); + break; + case 3: + writel(0, ®s->data1); + writel(0, ®s->data2); + writel(val, ®s->data3); + writel(0, ®s->data0); + break; + } + wait_busy(regs, BV_TIMING_PROG_US); +#else writel(val, ®s->data); wait_busy(regs, BV_TIMING_STROBE_PROG_US); +#endif udelay(WRITE_POSTAMBLE_US); return finish_access(regs, __func__); @@ -205,12 +362,17 @@ int fuse_override(u32 bank, u32 word, u32 val) { struct ocotp_regs *regs; int ret; + u32 phy_bank; + u32 phy_word; ret = prepare_write(®s, bank, word, __func__); if (ret) return ret; - writel(val, ®s->bank[bank].fuse_regs[word << 2]); + phy_bank = fuse_bank_physical(bank); + phy_word = fuse_word_physical(bank, word); + + writel(val, ®s->bank[phy_bank].fuse_regs[phy_word << 2]); return finish_access(regs, __func__); }