| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (c) 2013-2014, NVIDIA CORPORATION. All rights reserved. |
| */ |
| |
| #include <linux/device.h> |
| #include <linux/clk.h> |
| #include <linux/err.h> |
| #include <linux/io.h> |
| #include <linux/kernel.h> |
| #include <linux/nvmem-consumer.h> |
| #include <linux/of_device.h> |
| #include <linux/of_address.h> |
| #include <linux/platform_device.h> |
| #include <linux/random.h> |
| |
| #include <soc/tegra/fuse.h> |
| |
| #include "fuse.h" |
| |
| #define FUSE_BEGIN 0x100 |
| |
| /* Tegra30 and later */ |
| #define FUSE_VENDOR_CODE 0x100 |
| #define FUSE_FAB_CODE 0x104 |
| #define FUSE_LOT_CODE_0 0x108 |
| #define FUSE_LOT_CODE_1 0x10c |
| #define FUSE_WAFER_ID 0x110 |
| #define FUSE_X_COORDINATE 0x114 |
| #define FUSE_Y_COORDINATE 0x118 |
| |
| #define FUSE_HAS_REVISION_INFO BIT(0) |
| |
| #if defined(CONFIG_ARCH_TEGRA_3x_SOC) || \ |
| defined(CONFIG_ARCH_TEGRA_114_SOC) || \ |
| defined(CONFIG_ARCH_TEGRA_124_SOC) || \ |
| defined(CONFIG_ARCH_TEGRA_132_SOC) || \ |
| defined(CONFIG_ARCH_TEGRA_210_SOC) || \ |
| defined(CONFIG_ARCH_TEGRA_186_SOC) || \ |
| defined(CONFIG_ARCH_TEGRA_194_SOC) |
| static u32 tegra30_fuse_read_early(struct tegra_fuse *fuse, unsigned int offset) |
| { |
| if (WARN_ON(!fuse->base)) |
| return 0; |
| |
| return readl_relaxed(fuse->base + FUSE_BEGIN + offset); |
| } |
| |
| static u32 tegra30_fuse_read(struct tegra_fuse *fuse, unsigned int offset) |
| { |
| u32 value; |
| int err; |
| |
| err = clk_prepare_enable(fuse->clk); |
| if (err < 0) { |
| dev_err(fuse->dev, "failed to enable FUSE clock: %d\n", err); |
| return 0; |
| } |
| |
| value = readl_relaxed(fuse->base + FUSE_BEGIN + offset); |
| |
| clk_disable_unprepare(fuse->clk); |
| |
| return value; |
| } |
| |
| static void __init tegra30_fuse_add_randomness(void) |
| { |
| u32 randomness[12]; |
| |
| randomness[0] = tegra_sku_info.sku_id; |
| randomness[1] = tegra_read_straps(); |
| randomness[2] = tegra_read_chipid(); |
| randomness[3] = tegra_sku_info.cpu_process_id << 16; |
| randomness[3] |= tegra_sku_info.soc_process_id; |
| randomness[4] = tegra_sku_info.cpu_speedo_id << 16; |
| randomness[4] |= tegra_sku_info.soc_speedo_id; |
| randomness[5] = tegra_fuse_read_early(FUSE_VENDOR_CODE); |
| randomness[6] = tegra_fuse_read_early(FUSE_FAB_CODE); |
| randomness[7] = tegra_fuse_read_early(FUSE_LOT_CODE_0); |
| randomness[8] = tegra_fuse_read_early(FUSE_LOT_CODE_1); |
| randomness[9] = tegra_fuse_read_early(FUSE_WAFER_ID); |
| randomness[10] = tegra_fuse_read_early(FUSE_X_COORDINATE); |
| randomness[11] = tegra_fuse_read_early(FUSE_Y_COORDINATE); |
| |
| add_device_randomness(randomness, sizeof(randomness)); |
| } |
| |
| static void __init tegra30_fuse_init(struct tegra_fuse *fuse) |
| { |
| fuse->read_early = tegra30_fuse_read_early; |
| fuse->read = tegra30_fuse_read; |
| |
| tegra_init_revision(); |
| |
| if (fuse->soc->speedo_init) |
| fuse->soc->speedo_init(&tegra_sku_info); |
| |
| tegra30_fuse_add_randomness(); |
| } |
| #endif |
| |
| #ifdef CONFIG_ARCH_TEGRA_3x_SOC |
| static const struct tegra_fuse_info tegra30_fuse_info = { |
| .read = tegra30_fuse_read, |
| .size = 0x2a4, |
| .spare = 0x144, |
| }; |
| |
| const struct tegra_fuse_soc tegra30_fuse_soc = { |
| .init = tegra30_fuse_init, |
| .speedo_init = tegra30_init_speedo_data, |
| .info = &tegra30_fuse_info, |
| .soc_attr_group = &tegra_soc_attr_group, |
| }; |
| #endif |
| |
| #ifdef CONFIG_ARCH_TEGRA_114_SOC |
| static const struct tegra_fuse_info tegra114_fuse_info = { |
| .read = tegra30_fuse_read, |
| .size = 0x2a0, |
| .spare = 0x180, |
| }; |
| |
| const struct tegra_fuse_soc tegra114_fuse_soc = { |
| .init = tegra30_fuse_init, |
| .speedo_init = tegra114_init_speedo_data, |
| .info = &tegra114_fuse_info, |
| .soc_attr_group = &tegra_soc_attr_group, |
| }; |
| #endif |
| |
| #if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC) |
| static const struct nvmem_cell_lookup tegra124_fuse_lookups[] = { |
| { |
| .nvmem_name = "fuse", |
| .cell_name = "xusb-pad-calibration", |
| .dev_id = "7009f000.padctl", |
| .con_id = "calibration", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "sata-calibration", |
| .dev_id = "70020000.sata", |
| .con_id = "calibration", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-common", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "common", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-realignment", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "realignment", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-cpu0", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "cpu0", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-cpu1", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "cpu1", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-cpu2", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "cpu2", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-cpu3", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "cpu3", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-mem0", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "mem0", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-mem1", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "mem1", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-gpu", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "gpu", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-pllx", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "pllx", |
| }, |
| }; |
| |
| static const struct tegra_fuse_info tegra124_fuse_info = { |
| .read = tegra30_fuse_read, |
| .size = 0x300, |
| .spare = 0x200, |
| }; |
| |
| const struct tegra_fuse_soc tegra124_fuse_soc = { |
| .init = tegra30_fuse_init, |
| .speedo_init = tegra124_init_speedo_data, |
| .info = &tegra124_fuse_info, |
| .lookups = tegra124_fuse_lookups, |
| .num_lookups = ARRAY_SIZE(tegra124_fuse_lookups), |
| .soc_attr_group = &tegra_soc_attr_group, |
| }; |
| #endif |
| |
| #if defined(CONFIG_ARCH_TEGRA_210_SOC) |
| static const struct nvmem_cell_lookup tegra210_fuse_lookups[] = { |
| { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-cpu1", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "cpu1", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-cpu2", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "cpu2", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-cpu0", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "cpu0", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "xusb-pad-calibration", |
| .dev_id = "7009f000.padctl", |
| .con_id = "calibration", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-cpu3", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "cpu3", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "sata-calibration", |
| .dev_id = "70020000.sata", |
| .con_id = "calibration", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-gpu", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "gpu", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-mem0", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "mem0", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-mem1", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "mem1", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-pllx", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "pllx", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "tsensor-common", |
| .dev_id = "700e2000.thermal-sensor", |
| .con_id = "common", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "gpu-calibration", |
| .dev_id = "57000000.gpu", |
| .con_id = "calibration", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "xusb-pad-calibration-ext", |
| .dev_id = "7009f000.padctl", |
| .con_id = "calibration-ext", |
| }, |
| }; |
| |
| static const struct tegra_fuse_info tegra210_fuse_info = { |
| .read = tegra30_fuse_read, |
| .size = 0x300, |
| .spare = 0x280, |
| }; |
| |
| const struct tegra_fuse_soc tegra210_fuse_soc = { |
| .init = tegra30_fuse_init, |
| .speedo_init = tegra210_init_speedo_data, |
| .info = &tegra210_fuse_info, |
| .lookups = tegra210_fuse_lookups, |
| .num_lookups = ARRAY_SIZE(tegra210_fuse_lookups), |
| .soc_attr_group = &tegra_soc_attr_group, |
| }; |
| #endif |
| |
| #if defined(CONFIG_ARCH_TEGRA_186_SOC) |
| static const struct nvmem_cell_lookup tegra186_fuse_lookups[] = { |
| { |
| .nvmem_name = "fuse", |
| .cell_name = "xusb-pad-calibration", |
| .dev_id = "3520000.padctl", |
| .con_id = "calibration", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "xusb-pad-calibration-ext", |
| .dev_id = "3520000.padctl", |
| .con_id = "calibration-ext", |
| }, |
| }; |
| |
| static const struct tegra_fuse_info tegra186_fuse_info = { |
| .read = tegra30_fuse_read, |
| .size = 0x300, |
| .spare = 0x280, |
| }; |
| |
| const struct tegra_fuse_soc tegra186_fuse_soc = { |
| .init = tegra30_fuse_init, |
| .info = &tegra186_fuse_info, |
| .lookups = tegra186_fuse_lookups, |
| .num_lookups = ARRAY_SIZE(tegra186_fuse_lookups), |
| .soc_attr_group = &tegra_soc_attr_group, |
| }; |
| #endif |
| |
| #if defined(CONFIG_ARCH_TEGRA_194_SOC) |
| static const struct nvmem_cell_lookup tegra194_fuse_lookups[] = { |
| { |
| .nvmem_name = "fuse", |
| .cell_name = "xusb-pad-calibration", |
| .dev_id = "3520000.padctl", |
| .con_id = "calibration", |
| }, { |
| .nvmem_name = "fuse", |
| .cell_name = "xusb-pad-calibration-ext", |
| .dev_id = "3520000.padctl", |
| .con_id = "calibration-ext", |
| }, |
| }; |
| |
| static const struct tegra_fuse_info tegra194_fuse_info = { |
| .read = tegra30_fuse_read, |
| .size = 0x300, |
| .spare = 0x280, |
| }; |
| |
| const struct tegra_fuse_soc tegra194_fuse_soc = { |
| .init = tegra30_fuse_init, |
| .info = &tegra194_fuse_info, |
| .lookups = tegra194_fuse_lookups, |
| .num_lookups = ARRAY_SIZE(tegra194_fuse_lookups), |
| .soc_attr_group = &tegra194_soc_attr_group, |
| }; |
| #endif |
