diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/805-v5.15-0004-nvmem-nintendo-otp-Add-new-driver-for-the-Wii-and-Wi.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/805-v5.15-0004-nvmem-nintendo-otp-Add-new-driver-for-the-Wii-and-Wi.patch | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/target/linux/generic/backport-5.10/805-v5.15-0004-nvmem-nintendo-otp-Add-new-driver-for-the-Wii-and-Wi.patch b/target/linux/generic/backport-5.10/805-v5.15-0004-nvmem-nintendo-otp-Add-new-driver-for-the-Wii-and-Wi.patch deleted file mode 100644 index 62d9e2aa0f..0000000000 --- a/target/linux/generic/backport-5.10/805-v5.15-0004-nvmem-nintendo-otp-Add-new-driver-for-the-Wii-and-Wi.patch +++ /dev/null @@ -1,191 +0,0 @@ -From 3683b761fe3a10ad18515acd5368dd601268cfe5 Mon Sep 17 00:00:00 2001 -From: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> -Date: Tue, 10 Aug 2021 16:30:36 +0100 -Subject: [PATCH] nvmem: nintendo-otp: Add new driver for the Wii and Wii U OTP -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -This OTP is read-only and contains various keys used by the console to -decrypt, encrypt or verify various pieces of storage. - -Its size depends on the console, it is 128 bytes on the Wii and -1024 bytes on the Wii U (split into eight 128 bytes banks). - -It can be used directly by writing into one register and reading from -the other one, without any additional synchronisation. - -This driver was written based on reversed documentation, see: -https://wiiubrew.org/wiki/Hardware/OTP - -Tested-by: Jonathan Neuschäfer <j.ne@posteo.net> # on Wii -Tested-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> # on Wii U -Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> -Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> -Link: https://lore.kernel.org/r/20210810153036.1494-3-srinivas.kandagatla@linaro.org -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - drivers/nvmem/Kconfig | 11 ++++ - drivers/nvmem/Makefile | 2 + - drivers/nvmem/nintendo-otp.c | 124 +++++++++++++++++++++++++++++++++++ - 3 files changed, 137 insertions(+) - create mode 100644 drivers/nvmem/nintendo-otp.c - ---- a/drivers/nvmem/Kconfig -+++ b/drivers/nvmem/Kconfig -@@ -107,6 +107,17 @@ config MTK_EFUSE - This driver can also be built as a module. If so, the module - will be called efuse-mtk. - -+config NVMEM_NINTENDO_OTP -+ tristate "Nintendo Wii and Wii U OTP Support" -+ help -+ This is a driver exposing the OTP of a Nintendo Wii or Wii U console. -+ -+ This memory contains common and per-console keys, signatures and -+ related data required to access peripherals. -+ -+ This driver can also be built as a module. If so, the module -+ will be called nvmem-nintendo-otp. -+ - config QCOM_QFPROM - tristate "QCOM QFPROM Support" - depends on ARCH_QCOM || COMPILE_TEST ---- a/drivers/nvmem/Makefile -+++ b/drivers/nvmem/Makefile -@@ -23,6 +23,8 @@ obj-$(CONFIG_NVMEM_LPC18XX_OTP) += nvmem - nvmem_lpc18xx_otp-y := lpc18xx_otp.o - obj-$(CONFIG_NVMEM_MXS_OCOTP) += nvmem-mxs-ocotp.o - nvmem-mxs-ocotp-y := mxs-ocotp.o -+obj-$(CONFIG_NVMEM_NINTENDO_OTP) += nvmem-nintendo-otp.o -+nvmem-nintendo-otp-y := nintendo-otp.o - obj-$(CONFIG_MTK_EFUSE) += nvmem_mtk-efuse.o - nvmem_mtk-efuse-y := mtk-efuse.o - obj-$(CONFIG_QCOM_QFPROM) += nvmem_qfprom.o ---- /dev/null -+++ b/drivers/nvmem/nintendo-otp.c -@@ -0,0 +1,124 @@ -+// SPDX-License-Identifier: GPL-2.0-only -+/* -+ * Nintendo Wii and Wii U OTP driver -+ * -+ * This is a driver exposing the OTP of a Nintendo Wii or Wii U console. -+ * -+ * This memory contains common and per-console keys, signatures and -+ * related data required to access peripherals. -+ * -+ * Based on reversed documentation from https://wiiubrew.org/wiki/Hardware/OTP -+ * -+ * Copyright (C) 2021 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> -+ */ -+ -+#include <linux/device.h> -+#include <linux/io.h> -+#include <linux/module.h> -+#include <linux/mod_devicetable.h> -+#include <linux/nvmem-provider.h> -+#include <linux/of_device.h> -+#include <linux/platform_device.h> -+ -+#define HW_OTPCMD 0 -+#define HW_OTPDATA 4 -+#define OTP_READ 0x80000000 -+#define BANK_SIZE 128 -+#define WORD_SIZE 4 -+ -+struct nintendo_otp_priv { -+ void __iomem *regs; -+}; -+ -+struct nintendo_otp_devtype_data { -+ const char *name; -+ unsigned int num_banks; -+}; -+ -+static const struct nintendo_otp_devtype_data hollywood_otp_data = { -+ .name = "wii-otp", -+ .num_banks = 1, -+}; -+ -+static const struct nintendo_otp_devtype_data latte_otp_data = { -+ .name = "wiiu-otp", -+ .num_banks = 8, -+}; -+ -+static int nintendo_otp_reg_read(void *context, -+ unsigned int reg, void *_val, size_t bytes) -+{ -+ struct nintendo_otp_priv *priv = context; -+ u32 *val = _val; -+ int words = bytes / WORD_SIZE; -+ u32 bank, addr; -+ -+ while (words--) { -+ bank = (reg / BANK_SIZE) << 8; -+ addr = (reg / WORD_SIZE) % (BANK_SIZE / WORD_SIZE); -+ iowrite32be(OTP_READ | bank | addr, priv->regs + HW_OTPCMD); -+ *val++ = ioread32be(priv->regs + HW_OTPDATA); -+ reg += WORD_SIZE; -+ } -+ -+ return 0; -+} -+ -+static const struct of_device_id nintendo_otp_of_table[] = { -+ { .compatible = "nintendo,hollywood-otp", .data = &hollywood_otp_data }, -+ { .compatible = "nintendo,latte-otp", .data = &latte_otp_data }, -+ {/* sentinel */}, -+}; -+MODULE_DEVICE_TABLE(of, nintendo_otp_of_table); -+ -+static int nintendo_otp_probe(struct platform_device *pdev) -+{ -+ struct device *dev = &pdev->dev; -+ const struct of_device_id *of_id = -+ of_match_device(nintendo_otp_of_table, dev); -+ struct resource *res; -+ struct nvmem_device *nvmem; -+ struct nintendo_otp_priv *priv; -+ -+ struct nvmem_config config = { -+ .stride = WORD_SIZE, -+ .word_size = WORD_SIZE, -+ .reg_read = nintendo_otp_reg_read, -+ .read_only = true, -+ .root_only = true, -+ }; -+ -+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); -+ if (!priv) -+ return -ENOMEM; -+ -+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ priv->regs = devm_ioremap_resource(dev, res); -+ if (IS_ERR(priv->regs)) -+ return PTR_ERR(priv->regs); -+ -+ if (of_id->data) { -+ const struct nintendo_otp_devtype_data *data = of_id->data; -+ config.name = data->name; -+ config.size = data->num_banks * BANK_SIZE; -+ } -+ -+ config.dev = dev; -+ config.priv = priv; -+ -+ nvmem = devm_nvmem_register(dev, &config); -+ -+ return PTR_ERR_OR_ZERO(nvmem); -+} -+ -+static struct platform_driver nintendo_otp_driver = { -+ .probe = nintendo_otp_probe, -+ .driver = { -+ .name = "nintendo-otp", -+ .of_match_table = nintendo_otp_of_table, -+ }, -+}; -+module_platform_driver(nintendo_otp_driver); -+MODULE_AUTHOR("Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>"); -+MODULE_DESCRIPTION("Nintendo Wii and Wii U OTP driver"); -+MODULE_LICENSE("GPL v2"); |