// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2019 Fuzhou Rockchip Electronics Co., Ltd */ #include #include #include #include #include #include #include #include #include #include struct otp_data { int (*init)(struct udevice *dev); int (*read)(struct udevice *dev, int offset, void *buf, int size); }; static int rockchip_otp_wait_status(struct rockchip_otp_platdata *otp, u32 flag) { int delay = OTPC_TIMEOUT; while (!(readl(otp->base + OTPC_INT_STATUS) & flag)) { udelay(1); delay--; if (delay <= 0) { printf("%s: wait init status timeout\n", __func__); return -ETIMEDOUT; } } /* clean int status */ writel(flag, otp->base + OTPC_INT_STATUS); return 0; } static int rockchip_otp_ecc_enable(struct rockchip_otp_platdata *otp, bool enable) { int ret = 0; writel(SBPI_DAP_ADDR_MASK | (SBPI_DAP_ADDR << SBPI_DAP_ADDR_SHIFT), otp->base + OTPC_SBPI_CTRL); writel(SBPI_CMD_VALID_MASK | 0x1, otp->base + OTPC_SBPI_CMD_VALID_PRE); writel(SBPI_DAP_CMD_WRF | SBPI_DAP_REG_ECC, otp->base + OTPC_SBPI_CMD0_OFFSET); if (enable) writel(SBPI_ECC_ENABLE, otp->base + OTPC_SBPI_CMD1_OFFSET); else writel(SBPI_ECC_DISABLE, otp->base + OTPC_SBPI_CMD1_OFFSET); writel(SBPI_ENABLE_MASK | SBPI_ENABLE, otp->base + OTPC_SBPI_CTRL); ret = rockchip_otp_wait_status(otp, OTPC_SBPI_DONE); if (ret < 0) printf("%s timeout during ecc_enable\n", __func__); return ret; } static int rockchip_px30_otp_read(struct udevice *dev, int offset, void *buf, int size) { struct rockchip_otp_platdata *otp = dev_get_platdata(dev); u8 *buffer = buf; int ret = 0; ret = rockchip_otp_ecc_enable(otp, false); if (ret < 0) { printf("%s rockchip_otp_ecc_enable err\n", __func__); return ret; } writel(OTPC_USE_USER | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL); udelay(5); while (size--) { writel(offset++ | OTPC_USER_ADDR_MASK, otp->base + OTPC_USER_ADDR); writel(OTPC_USER_FSM_ENABLE | OTPC_USER_FSM_ENABLE_MASK, otp->base + OTPC_USER_ENABLE); ret = rockchip_otp_wait_status(otp, OTPC_USER_DONE); if (ret < 0) { printf("%s timeout during read setup\n", __func__); goto read_end; } *buffer++ = readb(otp->base + OTPC_USER_Q); } read_end: writel(0x0 | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL); return ret; } static int rk3308bs_otp_wait_status(struct rockchip_otp_platdata *otp, u32 flag) { int delay = OTPC_TIMEOUT; while (!(readl(otp->base + OTPC_IRQ_ST) & flag)) { udelay(1); delay--; if (delay <= 0) { printf("%s: wait init status timeout\n", __func__); return -ETIMEDOUT; } } /* clean int status */ writel(flag, otp->base + OTPC_IRQ_ST); return 0; } static int rk3308bs_otp_active(struct rockchip_otp_platdata *otp) { int ret = 0; u32 mode; mode = readl(otp->base + OTPC_MODE_CTRL); switch (mode) { case OTPC_DEEP_STANDBY: writel(OTPC_STANDBY, otp->base + OTPC_MODE_CTRL); ret = rk3308bs_otp_wait_status(otp, OTPC_DP2STB_IRQ_ST); if (ret < 0) { dev_err(otp->dev, "timeout during wait dp2stb\n"); return ret; } case OTPC_STANDBY: writel(OTPC_ACTIVE, otp->base + OTPC_MODE_CTRL); ret = rk3308bs_otp_wait_status(otp, OTPC_STB2ACT_IRQ_ST); if (ret < 0) { dev_err(otp->dev, "timeout during wait stb2act\n"); return ret; } break; default: break; } return ret; } static int rk3308bs_otp_standby(struct rockchip_otp_platdata *otp) { int ret = 0; u32 mode; mode = readl(otp->base + OTPC_MODE_CTRL); switch (mode) { case OTPC_ACTIVE: writel(OTPC_STANDBY, otp->base + OTPC_MODE_CTRL); ret = rk3308bs_otp_wait_status(otp, OTPC_ACT2STB_IRQ_ST); if (ret < 0) { dev_err(otp->dev, "timeout during wait act2stb\n"); return ret; } case OTPC_STANDBY: writel(OTPC_DEEP_STANDBY, otp->base + OTPC_MODE_CTRL); ret = rk3308bs_otp_wait_status(otp, OTPC_STB2DP_IRQ_ST); if (ret < 0) { dev_err(otp->dev, "timeout during wait stb2dp\n"); return ret; } break; default: break; } return ret; } static int rockchip_rk3308bs_otp_read(struct udevice *dev, int offset, void *buf, int size) { struct rockchip_otp_platdata *otp = dev_get_platdata(dev); unsigned int addr_start, addr_end, addr_offset, addr_len; u32 out_value; u8 *buffer; int ret = 0, i = 0; if (offset > RK3308BS_MAX_BYTES - 1) return -ENOMEM; if (offset + size > RK3308BS_MAX_BYTES) size = RK3308BS_MAX_BYTES - offset; ret = rk3308bs_otp_active(otp); if (ret) goto out; addr_start = rounddown(offset, RK3308BS_NBYTES) / RK3308BS_NBYTES; addr_end = roundup(offset + size, RK3308BS_NBYTES) / RK3308BS_NBYTES; addr_offset = offset % RK3308BS_NBYTES; addr_len = addr_end - addr_start; buffer = calloc(1, sizeof(*buffer) * addr_len * RK3308BS_NBYTES); if (!buffer) { ret = -ENOMEM; goto read_end; } while (addr_len--) { writel(OTPC_TRANS_NUM, otp->base + OTPC_REPR_RD_TRANS_NUM); writel(addr_start++, otp->base + OTPC_ACCESS_ADDR); writel(OTPC_READ_ACCESS, otp->base + OTPC_MODE_CTRL); ret = rk3308bs_otp_wait_status(otp, OTPC_RDM_IRQ_ST); if (ret < 0) { printf("timeout during wait rd\n"); goto read_end; } out_value = readl(otp->base + OTPC_RD_DATA); memcpy(&buffer[i], &out_value, RK3308BS_NBYTES); i += RK3308BS_NBYTES; } memcpy(buf, buffer + addr_offset, size); read_end: kfree(buffer); rk3308bs_otp_standby(otp); out: return ret; } static int rockchip_rk3568_otp_read(struct udevice *dev, int offset, void *buf, int size) { struct rockchip_otp_platdata *otp = dev_get_platdata(dev); unsigned int addr_start, addr_end, addr_offset, addr_len; u32 out_value; u8 *buffer; int ret = 0, i = 0; addr_start = rounddown(offset, RK3568_NBYTES) / RK3568_NBYTES; addr_end = roundup(offset + size, RK3568_NBYTES) / RK3568_NBYTES; addr_offset = offset % RK3568_NBYTES; addr_len = addr_end - addr_start; buffer = calloc(1, sizeof(*buffer) * addr_len * RK3568_NBYTES); if (!buffer) return -ENOMEM; ret = rockchip_otp_ecc_enable(otp, true); if (ret < 0) { printf("%s rockchip_otp_ecc_enable err\n", __func__); return ret; } writel(OTPC_USE_USER | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL); udelay(5); while (addr_len--) { writel(addr_start++ | OTPC_USER_ADDR_MASK, otp->base + OTPC_USER_ADDR); writel(OTPC_USER_FSM_ENABLE | OTPC_USER_FSM_ENABLE_MASK, otp->base + OTPC_USER_ENABLE); ret = rockchip_otp_wait_status(otp, OTPC_USER_DONE); if (ret < 0) { printf("%s timeout during read setup\n", __func__); goto read_end; } out_value = readl(otp->base + OTPC_USER_Q); memcpy(&buffer[i], &out_value, RK3568_NBYTES); i += RK3568_NBYTES; } memcpy(buf, buffer + addr_offset, size); read_end: writel(0x0 | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL); kfree(buffer); return ret; } static int rockchip_rk3588_otp_read(struct udevice *dev, int offset, void *buf, int size) { struct rockchip_otp_platdata *otp = dev_get_platdata(dev); unsigned int addr_start, addr_end, addr_offset, addr_len; int ret = 0, i = 0; u32 out_value, st = 0; u8 *buffer; if (offset > RK3588_MAX_BYTES - 1) return -ENOMEM; if (offset + size > RK3588_MAX_BYTES) size = RK3588_MAX_BYTES - offset; addr_start = rounddown(offset, RK3588_NBYTES) / RK3588_NBYTES; addr_end = roundup(offset + size, RK3588_NBYTES) / RK3588_NBYTES; addr_offset = offset % RK3588_NBYTES; addr_len = addr_end - addr_start; addr_start += RK3588_NO_SECURE_OFFSET; buffer = calloc(1, sizeof(*buffer) * addr_len * RK3588_NBYTES); if (!buffer) return -ENOMEM; while (addr_len--) { writel((addr_start << RK3588_ADDR_SHIFT) | (RK3588_BURST_NUM << RK3588_BURST_SHIFT), otp->base + RK3588_OTPC_AUTO_CTRL); writel(RK3588_AUTO_EN, otp->base + RK3588_OTPC_AUTO_EN); ret = readl_poll_timeout(otp->base + RK3588_OTPC_INT_ST, st, st & RK3588_RD_DONE, OTPC_TIMEOUT); if (ret < 0) { printf("%s timeout during read setup\n", __func__); goto read_end; } writel(RK3588_RD_DONE, otp->base + RK3588_OTPC_INT_ST); out_value = readl(otp->base + RK3588_OTPC_DOUT0); memcpy(&buffer[i], &out_value, RK3588_NBYTES); i += RK3588_NBYTES; addr_start++; } memcpy(buf, buffer + addr_offset, size); read_end: kfree(buffer); return ret; } static int rockchip_rv1126_otp_init(struct udevice *dev) { struct rockchip_otp_platdata *otp = dev_get_platdata(dev); u32 status = 0; int ret; writel(0x0, otp->base + RV1126_OTP_NVM_CEB); ret = readl_poll_timeout(otp->base + RV1126_OTP_NVM_ST, status, status & 0x1, OTPC_TIMEOUT); if (ret < 0) { printf("%s timeout during set ceb\n", __func__); return ret; } writel(0x1, otp->base + RV1126_OTP_NVM_RSTB); ret = readl_poll_timeout(otp->base + RV1126_OTP_NVM_ST, status, status & 0x4, OTPC_TIMEOUT); if (ret < 0) { printf("%s timeout during set rstb\n", __func__); return ret; } return 0; } static int rockchip_rv1126_otp_read(struct udevice *dev, int offset, void *buf, int size) { struct rockchip_otp_platdata *otp = dev_get_platdata(dev); u32 status = 0; u8 *buffer = buf; int ret = 0; while (size--) { writel(offset++, otp->base + RV1126_OTP_NVM_RADDR); writel(0x1, otp->base + RV1126_OTP_NVM_RSTART); ret = readl_poll_timeout(otp->base + RV1126_OTP_READ_ST, status, status == 0, OTPC_TIMEOUT); if (ret < 0) { printf("%s timeout during read setup\n", __func__); return ret; } *buffer++ = readb(otp->base + RV1126_OTP_NVM_RDATA); } return 0; } static int rockchip_otp_read(struct udevice *dev, int offset, void *buf, int size) { struct otp_data *data; data = (struct otp_data *)dev_get_driver_data(dev); if (!data) return -ENOSYS; if (soc_is_rk3308bs() || soc_is_px30s()) return rockchip_rk3308bs_otp_read(dev, offset, buf, size); return data->read(dev, offset, buf, size); } static const struct misc_ops rockchip_otp_ops = { .read = rockchip_otp_read, }; static int rockchip_otp_ofdata_to_platdata(struct udevice *dev) { struct rockchip_otp_platdata *otp = dev_get_platdata(dev); otp->base = dev_read_addr_ptr(dev); return 0; } static int rockchip_otp_probe(struct udevice *dev) { struct otp_data *data; data = (struct otp_data *)dev_get_driver_data(dev); if (!data) return -EINVAL; if (data->init) return data->init(dev); return 0; } static const struct otp_data px30_data = { .read = rockchip_px30_otp_read, }; static const struct otp_data rk3308bs_data = { .read = rockchip_rk3308bs_otp_read, }; static const struct otp_data rk3568_data = { .read = rockchip_rk3568_otp_read, }; static const struct otp_data rk3588_data = { .read = rockchip_rk3588_otp_read, }; static const struct otp_data rv1126_data = { .init = rockchip_rv1126_otp_init, .read = rockchip_rv1126_otp_read, }; static const struct udevice_id rockchip_otp_ids[] = { { .compatible = "rockchip,px30-otp", .data = (ulong)&px30_data, }, { .compatible = "rockchip,px30s-otp", .data = (ulong)&rk3308bs_data, }, { .compatible = "rockchip,rk3308-otp", .data = (ulong)&px30_data, }, { .compatible = "rockchip,rk3308bs-otp", .data = (ulong)&rk3308bs_data, }, { .compatible = "rockchip,rk3528-otp", .data = (ulong)&rk3568_data, }, { .compatible = "rockchip,rk3562-otp", .data = (ulong)&rk3568_data, }, { .compatible = "rockchip,rk3568-otp", .data = (ulong)&rk3568_data, }, { .compatible = "rockchip,rk3588-otp", .data = (ulong)&rk3588_data, }, { .compatible = "rockchip,rv1106-otp", .data = (ulong)&rk3568_data, }, { .compatible = "rockchip,rv1126-otp", .data = (ulong)&rv1126_data, }, {} }; U_BOOT_DRIVER(rockchip_otp) = { .name = "rockchip_otp", .id = UCLASS_MISC, .of_match = rockchip_otp_ids, .ops = &rockchip_otp_ops, .ofdata_to_platdata = rockchip_otp_ofdata_to_platdata, .platdata_auto_alloc_size = sizeof(struct rockchip_otp_platdata), .probe = rockchip_otp_probe, };