From patchwork Fri Dec 13 07:14:20 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sughosh Ganu X-Patchwork-Id: 1208974 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linaro.org Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47Z24K13dmz9sPK for ; Fri, 13 Dec 2019 18:15:12 +1100 (AEDT) Received: from phobos.denx.de (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 966568177B; Fri, 13 Dec 2019 08:15:02 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 8F9F3816CD; Fri, 13 Dec 2019 08:14:58 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_NONE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id 9D887816CD for ; Fri, 13 Dec 2019 08:14:55 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sughosh.ganu@linaro.org Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 77E5A328; Thu, 12 Dec 2019 23:14:54 -0800 (PST) Received: from usa.arm.com (a074948-lin.blr.arm.com [10.162.4.147]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id A911C3F52E; Thu, 12 Dec 2019 23:18:06 -0800 (PST) From: Sughosh Ganu To: u-boot@lists.denx.de Subject: [PATCH v3 1/8] dm: rng: Add random number generator(rng) uclass Date: Fri, 13 Dec 2019 12:44:20 +0530 Message-Id: <1576221267-5948-2-git-send-email-sughosh.ganu@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> References: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.26 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.101.4 at phobos.denx.de X-Virus-Status: Clean Add a uclass for reading a random number seed from a random number generator device. Signed-off-by: Sughosh Ganu Reviewed-by: Patrice Chotard Tested-by: Ilias Apalodimas Reviewed-by: Patrick Delaunay --- drivers/Kconfig | 2 ++ drivers/Makefile | 1 + drivers/rng/Kconfig | 7 +++++++ drivers/rng/Makefile | 6 ++++++ drivers/rng/rng-uclass.c | 23 +++++++++++++++++++++++ include/dm/uclass-id.h | 1 + include/rng.h | 30 ++++++++++++++++++++++++++++++ 7 files changed, 70 insertions(+) create mode 100644 drivers/rng/Kconfig create mode 100644 drivers/rng/Makefile create mode 100644 drivers/rng/rng-uclass.c create mode 100644 include/rng.h diff --git a/drivers/Kconfig b/drivers/Kconfig index 9d99ce0..e34a227 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -90,6 +90,8 @@ source "drivers/remoteproc/Kconfig" source "drivers/reset/Kconfig" +source "drivers/rng/Kconfig" + source "drivers/rtc/Kconfig" source "drivers/scsi/Kconfig" diff --git a/drivers/Makefile b/drivers/Makefile index e977f19..6c619b1 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -115,4 +115,5 @@ obj-$(CONFIG_W1_EEPROM) += w1-eeprom/ obj-$(CONFIG_MACH_PIC32) += ddr/microchip/ obj-$(CONFIG_DM_HWSPINLOCK) += hwspinlock/ +obj-$(CONFIG_DM_RNG) += rng/ endif diff --git a/drivers/rng/Kconfig b/drivers/rng/Kconfig new file mode 100644 index 0000000..dd44cc0 --- /dev/null +++ b/drivers/rng/Kconfig @@ -0,0 +1,7 @@ +config DM_RNG + bool "Driver support for Random Number Generator devices" + depends on DM + help + Enable driver model for random number generator(rng) devices. + This interface is used to initialise the rng device and to + read the random seed from the device. diff --git a/drivers/rng/Makefile b/drivers/rng/Makefile new file mode 100644 index 0000000..311705b --- /dev/null +++ b/drivers/rng/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright (c) 2019, Linaro Limited +# + +obj-$(CONFIG_DM_RNG) += rng-uclass.o diff --git a/drivers/rng/rng-uclass.c b/drivers/rng/rng-uclass.c new file mode 100644 index 0000000..b6af3b8 --- /dev/null +++ b/drivers/rng/rng-uclass.c @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2019, Linaro Limited + */ + +#include +#include +#include + +int dm_rng_read(struct udevice *dev, void *buffer, size_t size) +{ + const struct dm_rng_ops *ops = device_get_ops(dev); + + if (!ops->read) + return -ENOSYS; + + return ops->read(dev, buffer, size); +} + +UCLASS_DRIVER(rng) = { + .name = "rng", + .id = UCLASS_RNG, +}; diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index 0c563d8..192202d 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -86,6 +86,7 @@ enum uclass_id { UCLASS_REGULATOR, /* Regulator device */ UCLASS_REMOTEPROC, /* Remote Processor device */ UCLASS_RESET, /* Reset controller device */ + UCLASS_RNG, /* Random Number Generator */ UCLASS_RTC, /* Real time clock device */ UCLASS_SCSI, /* SCSI device */ UCLASS_SERIAL, /* Serial UART */ diff --git a/include/rng.h b/include/rng.h new file mode 100644 index 0000000..61d5da9 --- /dev/null +++ b/include/rng.h @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2019, Linaro Limited + */ + +#if !defined _RNG_H_ +#define _RNG_H_ + +#include + +/** + * dm_rng_read() - read a random number seed from the rng device + * @buffer: input buffer to put the read random seed into + * @size: number of bytes of random seed read + * + */ +int dm_rng_read(struct udevice *dev, void *buffer, size_t size); + +/* struct dm_rng_ops - Operations for the hwrng uclass */ +struct dm_rng_ops { + /** + * @read() - read a random number seed + * + * @data: input buffer to read the random seed + * @max: total number of bytes to read + */ + int (*read)(struct udevice *dev, void *data, size_t max); +}; + +#endif /* _RNG_H_ */ From patchwork Fri Dec 13 07:14:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sughosh Ganu X-Patchwork-Id: 1208975 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linaro.org Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47Z24X52l5z9sPK for ; Fri, 13 Dec 2019 18:15:23 +1100 (AEDT) Received: from phobos.denx.de (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 5D5C48178A; Fri, 13 Dec 2019 08:15:06 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 996808177B; Fri, 13 Dec 2019 08:15:00 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_NONE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id EEBF0801BA for ; Fri, 13 Dec 2019 08:14:57 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sughosh.ganu@linaro.org Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 9A137328; Thu, 12 Dec 2019 23:14:56 -0800 (PST) Received: from usa.arm.com (a074948-lin.blr.arm.com [10.162.4.147]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C26263F52E; Thu, 12 Dec 2019 23:18:08 -0800 (PST) From: Sughosh Ganu To: u-boot@lists.denx.de Subject: [PATCH v3 2/8] clk: stm32mp1: Add a clock entry for RNG1 device Date: Fri, 13 Dec 2019 12:44:21 +0530 Message-Id: <1576221267-5948-3-git-send-email-sughosh.ganu@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> References: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.26 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.101.4 at phobos.denx.de X-Virus-Status: Clean Add an entry for allowing clock enablement for the random number generator peripheral, RNG1. Signed-off-by: Sughosh Ganu Reviewed-by: Patrice Chotard Acked-by: Patrick Delaunay --- drivers/clk/clk_stm32mp1.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/clk/clk_stm32mp1.c b/drivers/clk/clk_stm32mp1.c index 3718970..da66bde 100644 --- a/drivers/clk/clk_stm32mp1.c +++ b/drivers/clk/clk_stm32mp1.c @@ -563,6 +563,7 @@ static const struct stm32mp1_clk_gate stm32mp1_clk_gate[] = { STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 10, GPIOK, _UNKNOWN_SEL), STM32MP1_CLK_SET_CLR(RCC_MP_AHB5ENSETR, 0, GPIOZ, _UNKNOWN_SEL), + STM32MP1_CLK_SET_CLR(RCC_MP_AHB5ENSETR, 6, RNG1_K, _UNKNOWN_SEL), STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 7, ETHCK_K, _ETH_SEL), STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 8, ETHTX, _UNKNOWN_SEL), From patchwork Fri Dec 13 07:14:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sughosh Ganu X-Patchwork-Id: 1208976 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linaro.org Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47Z24h6Pzgz9sPK for ; Fri, 13 Dec 2019 18:15:32 +1100 (AEDT) Received: from phobos.denx.de (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id C06CC8177F; Fri, 13 Dec 2019 08:15:09 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id D87B4816CD; Fri, 13 Dec 2019 08:15:03 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_NONE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id 83A36816CD for ; Fri, 13 Dec 2019 08:14:59 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sughosh.ganu@linaro.org Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B4078328; Thu, 12 Dec 2019 23:14:58 -0800 (PST) Received: from usa.arm.com (a074948-lin.blr.arm.com [10.162.4.147]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E492E3F52E; Thu, 12 Dec 2019 23:18:10 -0800 (PST) From: Sughosh Ganu To: u-boot@lists.denx.de Subject: [PATCH v3 3/8] stm32mp1: rng: Add a driver for random number generator(rng) device Date: Fri, 13 Dec 2019 12:44:22 +0530 Message-Id: <1576221267-5948-4-git-send-email-sughosh.ganu@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> References: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.26 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.101.4 at phobos.denx.de X-Virus-Status: Clean Add a driver for the rng device found on stm32mp1 platforms. The driver provides a routine for reading the random number seed from the hardware device. Signed-off-by: Sughosh Ganu Reviewed-by: Patrice Chotard Acked-by: Patrick Delaunay --- drivers/rng/Kconfig | 7 ++ drivers/rng/Makefile | 1 + drivers/rng/stm32mp1_rng.c | 158 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 166 insertions(+) create mode 100644 drivers/rng/stm32mp1_rng.c diff --git a/drivers/rng/Kconfig b/drivers/rng/Kconfig index dd44cc0..5fc11db 100644 --- a/drivers/rng/Kconfig +++ b/drivers/rng/Kconfig @@ -5,3 +5,10 @@ config DM_RNG Enable driver model for random number generator(rng) devices. This interface is used to initialise the rng device and to read the random seed from the device. + +config RNG_STM32MP1 + bool "Enable random number generator for STM32MP1" + depends on ARCH_STM32MP && DM_RNG + default n + help + Enable STM32MP1 rng driver. diff --git a/drivers/rng/Makefile b/drivers/rng/Makefile index 311705b..699beb3 100644 --- a/drivers/rng/Makefile +++ b/drivers/rng/Makefile @@ -4,3 +4,4 @@ # obj-$(CONFIG_DM_RNG) += rng-uclass.o +obj-$(CONFIG_RNG_STM32MP1) += stm32mp1_rng.o diff --git a/drivers/rng/stm32mp1_rng.c b/drivers/rng/stm32mp1_rng.c new file mode 100644 index 0000000..5cd736d --- /dev/null +++ b/drivers/rng/stm32mp1_rng.c @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2019, Linaro Limited + */ + +#include +#include +#include +#include +#include + +#include +#include +#include + +#define RNG_CR 0x00 +#define RNG_CR_RNGEN BIT(2) +#define RNG_CR_CED BIT(5) + +#define RNG_SR 0x04 +#define RNG_SR_SEIS BIT(6) +#define RNG_SR_CEIS BIT(5) +#define RNG_SR_SECS BIT(2) +#define RNG_SR_DRDY BIT(0) + +#define RNG_DR 0x08 + +struct stm32_rng_platdata { + fdt_addr_t base; + struct clk clk; + struct reset_ctl rst; +}; + +static int stm32_rng_read(struct udevice *dev, void *data, size_t len) +{ + int retval = 0, i; + u32 sr, count, reg; + size_t increment; + struct stm32_rng_platdata *pdata = dev_get_platdata(dev); + + while (len > 0) { + retval = readl_poll_timeout(pdata->base + RNG_SR, sr, + sr & RNG_SR_DRDY, 10000); + if (retval) + return retval; + + if (sr & (RNG_SR_SEIS | RNG_SR_SECS)) { + /* As per SoC TRM */ + clrbits_le32(pdata->base + RNG_SR, RNG_SR_SEIS); + for (i = 0; i < 12; i++) + readl(pdata->base + RNG_DR); + if (readl(pdata->base + RNG_SR) & RNG_SR_SEIS) { + printf("RNG Noise"); + return -EIO; + } + /* start again */ + continue; + } + + count = 4; + while (len && count) { + reg = readl(pdata->base + RNG_DR); + memcpy(data, ®, min(len, sizeof(u32))); + increment = min(len, sizeof(u32)); + data += increment; + retval += increment; + len -= increment; + count--; + } + } + + return retval; +} + +static int stm32_rng_init(struct stm32_rng_platdata *pdata) +{ + int err; + + err = clk_enable(&pdata->clk); + if (err) + return err; + + /* Disable CED */ + writel(RNG_CR_RNGEN | RNG_CR_CED, pdata->base + RNG_CR); + + /* clear error indicators */ + writel(0, pdata->base + RNG_SR); + + return 0; +} + +static int stm32_rng_cleanup(struct stm32_rng_platdata *pdata) +{ + + writel(0, pdata->base + RNG_CR); + + return clk_disable(&pdata->clk); +} + +static int stm32_rng_probe(struct udevice *dev) +{ + struct stm32_rng_platdata *pdata = dev_get_platdata(dev); + + reset_assert(&pdata->rst); + udelay(20); + reset_deassert(&pdata->rst); + + return stm32_rng_init(pdata); +} + +static int stm32_rng_remove(struct udevice *dev) +{ + struct stm32_rng_platdata *pdata = dev_get_platdata(dev); + + return stm32_rng_cleanup(pdata); +} + +static int stm32_rng_ofdata_to_platdata(struct udevice *dev) +{ + struct stm32_rng_platdata *pdata = dev_get_platdata(dev); + int err; + + pdata->base = dev_read_addr(dev); + if (!pdata->base) + return -ENOMEM; + + err = clk_get_by_index(dev, 0, &pdata->clk); + if (err) + return err; + + err = reset_get_by_index(dev, 0, &pdata->rst); + if (err) + return err; + + return 0; +} + +static const struct dm_rng_ops stm32_rng_ops = { + .read = stm32_rng_read, +}; + +static const struct udevice_id stm32_rng_match[] = { + { + .compatible = "st,stm32-rng", + }, + {}, +}; + +U_BOOT_DRIVER(stm32_rng) = { + .name = "stm32-rng", + .id = UCLASS_RNG, + .of_match = stm32_rng_match, + .ops = &stm32_rng_ops, + .probe = stm32_rng_probe, + .remove = stm32_rng_remove, + .platdata_auto_alloc_size = sizeof(struct stm32_rng_platdata), + .ofdata_to_platdata = stm32_rng_ofdata_to_platdata, +}; From patchwork Fri Dec 13 07:14:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sughosh Ganu X-Patchwork-Id: 1208979 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linaro.org Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47Z25L699gz9sPK for ; Fri, 13 Dec 2019 18:16:06 +1100 (AEDT) Received: from phobos.denx.de (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id EB21B8178F; Fri, 13 Dec 2019 08:15:16 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id A625081791; Fri, 13 Dec 2019 08:15:11 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_NONE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id ECE408178C for ; Fri, 13 Dec 2019 08:15:01 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sughosh.ganu@linaro.org Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id CDE71328; Thu, 12 Dec 2019 23:15:00 -0800 (PST) Received: from usa.arm.com (a074948-lin.blr.arm.com [10.162.4.147]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 0A5633F52E; Thu, 12 Dec 2019 23:18:12 -0800 (PST) From: Sughosh Ganu To: u-boot@lists.denx.de Subject: [PATCH v3 4/8] configs: stm32mp15: Enable random number generator(rng) device Date: Fri, 13 Dec 2019 12:44:23 +0530 Message-Id: <1576221267-5948-5-git-send-email-sughosh.ganu@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> References: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.26 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.101.4 at phobos.denx.de X-Virus-Status: Clean Enable support for the rng device on the stm32mp15 configs. Signed-off-by: Sughosh Ganu Reviewed-by: Patrice Chotard Acked-by: Patrick Delaunay --- configs/stm32mp15_basic_defconfig | 2 ++ configs/stm32mp15_optee_defconfig | 2 ++ configs/stm32mp15_trusted_defconfig | 2 ++ 3 files changed, 6 insertions(+) diff --git a/configs/stm32mp15_basic_defconfig b/configs/stm32mp15_basic_defconfig index 358c2cd..5ca40e0 100644 --- a/configs/stm32mp15_basic_defconfig +++ b/configs/stm32mp15_basic_defconfig @@ -143,3 +143,5 @@ CONFIG_VIDEO_STM32_DSI=y CONFIG_VIDEO_STM32_MAX_XRES=1280 CONFIG_VIDEO_STM32_MAX_YRES=800 CONFIG_FDT_FIXUP_PARTITIONS=y +CONFIG_DM_RNG=y +CONFIG_RNG_STM32MP1=y diff --git a/configs/stm32mp15_optee_defconfig b/configs/stm32mp15_optee_defconfig index a065d3e..b161cd1 100644 --- a/configs/stm32mp15_optee_defconfig +++ b/configs/stm32mp15_optee_defconfig @@ -127,3 +127,5 @@ CONFIG_VIDEO_STM32_DSI=y CONFIG_VIDEO_STM32_MAX_XRES=1280 CONFIG_VIDEO_STM32_MAX_YRES=800 CONFIG_FDT_FIXUP_PARTITIONS=y +CONFIG_DM_RNG=y +CONFIG_RNG_STM32MP1=y diff --git a/configs/stm32mp15_trusted_defconfig b/configs/stm32mp15_trusted_defconfig index 632f11f..ddf244d 100644 --- a/configs/stm32mp15_trusted_defconfig +++ b/configs/stm32mp15_trusted_defconfig @@ -126,3 +126,5 @@ CONFIG_VIDEO_STM32_DSI=y CONFIG_VIDEO_STM32_MAX_XRES=1280 CONFIG_VIDEO_STM32_MAX_YRES=800 CONFIG_FDT_FIXUP_PARTITIONS=y +CONFIG_DM_RNG=y +CONFIG_RNG_STM32MP1=y From patchwork Fri Dec 13 07:14:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sughosh Ganu X-Patchwork-Id: 1208977 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linaro.org Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47Z24w1hK2z9sPK for ; Fri, 13 Dec 2019 18:15:44 +1100 (AEDT) Received: from phobos.denx.de (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 1C14381795; Fri, 13 Dec 2019 08:15:13 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 0A8A38177F; Fri, 13 Dec 2019 08:15:09 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_NONE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id 0597381785 for ; Fri, 13 Dec 2019 08:15:03 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sughosh.ganu@linaro.org Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E774ADA7; Thu, 12 Dec 2019 23:15:02 -0800 (PST) Received: from usa.arm.com (a074948-lin.blr.arm.com [10.162.4.147]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 241EB3F52E; Thu, 12 Dec 2019 23:18:14 -0800 (PST) From: Sughosh Ganu To: u-boot@lists.denx.de Subject: [PATCH v3 5/8] sandbox: rng: Add a random number generator(rng) driver Date: Fri, 13 Dec 2019 12:44:24 +0530 Message-Id: <1576221267-5948-6-git-send-email-sughosh.ganu@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> References: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.26 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.101.4 at phobos.denx.de X-Virus-Status: Clean Add a sandbox driver for random number generation. Mostly aimed at providing a unit test for rng uclass. Signed-off-by: Sughosh Ganu Reviewed-by: Patrice Chotard --- arch/sandbox/dts/test.dts | 4 ++++ drivers/rng/Kconfig | 7 +++++++ drivers/rng/Makefile | 1 + drivers/rng/sandbox_rng.c | 36 ++++++++++++++++++++++++++++++++++++ 4 files changed, 48 insertions(+) create mode 100644 drivers/rng/sandbox_rng.c diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index fdb08f2..2c85540 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -599,6 +599,10 @@ reset-names = "other", "test"; }; + rng@0 { + compatible = "sandbox,sandbox-rng"; + }; + rproc_1: rproc@1 { compatible = "sandbox,test-processor"; remoteproc-name = "remoteproc-test-dev1"; diff --git a/drivers/rng/Kconfig b/drivers/rng/Kconfig index 5fc11db..3a1d3f0 100644 --- a/drivers/rng/Kconfig +++ b/drivers/rng/Kconfig @@ -6,6 +6,13 @@ config DM_RNG This interface is used to initialise the rng device and to read the random seed from the device. +config RNG_SANDBOX + bool "Sandbox random number generator" + depends on SANDBOX && DM_RNG + help + Enable random number generator for sandbox. This is an + emulation of a rng device. + config RNG_STM32MP1 bool "Enable random number generator for STM32MP1" depends on ARCH_STM32MP && DM_RNG diff --git a/drivers/rng/Makefile b/drivers/rng/Makefile index 699beb3..3517005 100644 --- a/drivers/rng/Makefile +++ b/drivers/rng/Makefile @@ -4,4 +4,5 @@ # obj-$(CONFIG_DM_RNG) += rng-uclass.o +obj-$(CONFIG_RNG_SANDBOX) += sandbox_rng.o obj-$(CONFIG_RNG_STM32MP1) += stm32mp1_rng.o diff --git a/drivers/rng/sandbox_rng.c b/drivers/rng/sandbox_rng.c new file mode 100644 index 0000000..c5be552 --- /dev/null +++ b/drivers/rng/sandbox_rng.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2019, Linaro Limited + */ + +#include +#include +#include + +static unsigned long random = 0xdeadbeef; + +static int sandbox_rng_read(struct udevice *dev, void *data, size_t len) +{ + random ^= ~0UL; + *(unsigned long *)data = random; + + return sizeof(random); +} + +static const struct dm_rng_ops sandbox_rng_ops = { + .read = sandbox_rng_read, +}; + +static const struct udevice_id sandbox_rng_match[] = { + { + .compatible = "sandbox,sandbox-rng", + }, + {}, +}; + +U_BOOT_DRIVER(sandbox_rng) = { + .name = "sandbox-rng", + .id = UCLASS_RNG, + .of_match = sandbox_rng_match, + .ops = &sandbox_rng_ops, +}; From patchwork Fri Dec 13 07:14:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sughosh Ganu X-Patchwork-Id: 1208978 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linaro.org Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47Z257264lz9sPL for ; Fri, 13 Dec 2019 18:15:55 +1100 (AEDT) Received: from phobos.denx.de (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id CFE7281798; Fri, 13 Dec 2019 08:15:14 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 701A481790; Fri, 13 Dec 2019 08:15:11 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_NONE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id 569BE81789 for ; Fri, 13 Dec 2019 08:15:05 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sughosh.ganu@linaro.org Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 17401DA7; Thu, 12 Dec 2019 23:15:05 -0800 (PST) Received: from usa.arm.com (a074948-lin.blr.arm.com [10.162.4.147]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 3DC533F52E; Thu, 12 Dec 2019 23:18:17 -0800 (PST) From: Sughosh Ganu To: u-boot@lists.denx.de Subject: [PATCH v3 6/8] configs: sandbox: Enable random number generator(rng) device Date: Fri, 13 Dec 2019 12:44:25 +0530 Message-Id: <1576221267-5948-7-git-send-email-sughosh.ganu@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> References: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.26 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.101.4 at phobos.denx.de X-Virus-Status: Clean Enable support for random number generator on sandbox configs. This is aimed primarily at adding unit test support for rng uclass. Signed-off-by: Sughosh Ganu Reviewed-by: Patrice Chotard Reviewed-by: Patrick Delaunay --- configs/sandbox64_defconfig | 2 ++ configs/sandbox_defconfig | 2 ++ 2 files changed, 4 insertions(+) diff --git a/configs/sandbox64_defconfig b/configs/sandbox64_defconfig index cc536ff..a21d832 100644 --- a/configs/sandbox64_defconfig +++ b/configs/sandbox64_defconfig @@ -158,6 +158,8 @@ CONFIG_REGULATOR_RK8XX=y CONFIG_REGULATOR_S5M8767=y CONFIG_DM_REGULATOR_SANDBOX=y CONFIG_REGULATOR_TPS65090=y +CONFIG_DM_RNG=y +CONFIG_RNG_SANDBOX=y CONFIG_DM_PWM=y CONFIG_PWM_SANDBOX=y CONFIG_RAM=y diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig index 64245f7..9bdc0f5 100644 --- a/configs/sandbox_defconfig +++ b/configs/sandbox_defconfig @@ -179,6 +179,8 @@ CONFIG_REGULATOR_RK8XX=y CONFIG_REGULATOR_S5M8767=y CONFIG_DM_REGULATOR_SANDBOX=y CONFIG_REGULATOR_TPS65090=y +CONFIG_DM_RNG=y +CONFIG_RNG_SANDBOX=y CONFIG_DM_PWM=y CONFIG_PWM_SANDBOX=y CONFIG_RAM=y From patchwork Fri Dec 13 07:14:26 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sughosh Ganu X-Patchwork-Id: 1208980 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linaro.org Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47Z25Y0gL4z9sPK for ; Fri, 13 Dec 2019 18:16:17 +1100 (AEDT) Received: from phobos.denx.de (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id A5DF08179E; Fri, 13 Dec 2019 08:15:18 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 18E9281790; Fri, 13 Dec 2019 08:15:12 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_NONE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id 1464A81782 for ; Fri, 13 Dec 2019 08:15:07 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sughosh.ganu@linaro.org Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 31B4A1007; Thu, 12 Dec 2019 23:15:07 -0800 (PST) Received: from usa.arm.com (a074948-lin.blr.arm.com [10.162.4.147]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 61BFB3F52E; Thu, 12 Dec 2019 23:18:19 -0800 (PST) From: Sughosh Ganu To: u-boot@lists.denx.de Subject: [PATCH v3 7/8] test: rng: Add basic test for random number generator(rng) uclass Date: Fri, 13 Dec 2019 12:44:26 +0530 Message-Id: <1576221267-5948-8-git-send-email-sughosh.ganu@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> References: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.26 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.101.4 at phobos.denx.de X-Virus-Status: Clean Add a unit test for testing the rng uclass functionality using the sandbox rng driver. Signed-off-by: Sughosh Ganu Reviewed-by: Patrice Chotard --- test/dm/Makefile | 1 + test/dm/rng.c | 26 ++++++++++++++++++++++++++ 2 files changed, 27 insertions(+) create mode 100644 test/dm/rng.c diff --git a/test/dm/Makefile b/test/dm/Makefile index 0c2fd5c..f61bf65 100644 --- a/test/dm/Makefile +++ b/test/dm/Makefile @@ -65,4 +65,5 @@ obj-$(CONFIG_VIRTIO_SANDBOX) += virtio.o obj-$(CONFIG_DMA) += dma.o obj-$(CONFIG_DM_MDIO) += mdio.o obj-$(CONFIG_DM_MDIO_MUX) += mdio_mux.o +obj-$(CONFIG_DM_RNG) += rng.o endif diff --git a/test/dm/rng.c b/test/dm/rng.c new file mode 100644 index 0000000..879e80a --- /dev/null +++ b/test/dm/rng.c @@ -0,0 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2019, Linaro Limited + */ + +#include +#include +#include +#include +#include + +/* Basic test of the rng uclass */ +static int dm_test_rng_read(struct unit_test_state *uts) +{ + unsigned long val1 = 0, val2 = 0; + struct udevice *dev; + + ut_assertok(uclass_get_device(UCLASS_RNG, 0, &dev)); + ut_assertnonnull(dev); + dm_rng_read(dev, &val1, sizeof(val1)); + dm_rng_read(dev, &val2, sizeof(val2)); + ut_assert(val1 != val2); + + return 0; +} +DM_TEST(dm_test_rng_read, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); From patchwork Fri Dec 13 07:14:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sughosh Ganu X-Patchwork-Id: 1208981 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linaro.org Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47Z25l1spDz9sPK for ; Fri, 13 Dec 2019 18:16:27 +1100 (AEDT) Received: from phobos.denx.de (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 5D148817A6; Fri, 13 Dec 2019 08:15:23 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 9711D81798; Fri, 13 Dec 2019 08:15:13 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_NONE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id 277EC81786 for ; Fri, 13 Dec 2019 08:15:10 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sughosh.ganu@linaro.org Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4BD58328; Thu, 12 Dec 2019 23:15:09 -0800 (PST) Received: from usa.arm.com (a074948-lin.blr.arm.com [10.162.4.147]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 7C02E3F52E; Thu, 12 Dec 2019 23:18:21 -0800 (PST) From: Sughosh Ganu To: u-boot@lists.denx.de Subject: [PATCH v3 8/8] virtio: rng: Add a random number generator(rng) driver Date: Fri, 13 Dec 2019 12:44:27 +0530 Message-Id: <1576221267-5948-9-git-send-email-sughosh.ganu@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> References: <1576221267-5948-1-git-send-email-sughosh.ganu@linaro.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.26 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.101.4 at phobos.denx.de X-Virus-Status: Clean Add a driver for the virtio-rng device on the qemu platform. The device uses pci as a transport medium. The driver can be enabled with the following configs CONFIG_VIRTIO CONFIG_DM_RNG CONFIG_VIRTIO_PCI CONFIG_VIRTIO_RNG Signed-off-by: Sughosh Ganu Tested-by: Ilias Apalodimas --- drivers/virtio/Kconfig | 6 ++++ drivers/virtio/Makefile | 1 + drivers/virtio/virtio-uclass.c | 1 + drivers/virtio/virtio_rng.c | 72 ++++++++++++++++++++++++++++++++++++++++++ include/virtio.h | 4 ++- 5 files changed, 83 insertions(+), 1 deletion(-) create mode 100644 drivers/virtio/virtio_rng.c diff --git a/drivers/virtio/Kconfig b/drivers/virtio/Kconfig index a9d5fd0..2e3dd3b 100644 --- a/drivers/virtio/Kconfig +++ b/drivers/virtio/Kconfig @@ -59,4 +59,10 @@ config VIRTIO_BLK This is the virtual block driver for virtio. It can be used with QEMU based targets. +config VIRTIO_RNG + bool "virtio rng driver" + depends on VIRTIO + help + This is the virtual random number generator driver. It can be used + with Qemu based targets. endmenu diff --git a/drivers/virtio/Makefile b/drivers/virtio/Makefile index 4579044..dc88809 100644 --- a/drivers/virtio/Makefile +++ b/drivers/virtio/Makefile @@ -9,3 +9,4 @@ obj-$(CONFIG_VIRTIO_PCI) += virtio_pci_legacy.o virtio_pci_modern.o obj-$(CONFIG_VIRTIO_SANDBOX) += virtio_sandbox.o obj-$(CONFIG_VIRTIO_NET) += virtio_net.o obj-$(CONFIG_VIRTIO_BLK) += virtio_blk.o +obj-$(CONFIG_VIRTIO_RNG) += virtio_rng.o diff --git a/drivers/virtio/virtio-uclass.c b/drivers/virtio/virtio-uclass.c index 34397d7..436faa4 100644 --- a/drivers/virtio/virtio-uclass.c +++ b/drivers/virtio/virtio-uclass.c @@ -24,6 +24,7 @@ static const char *const virtio_drv_name[VIRTIO_ID_MAX_NUM] = { [VIRTIO_ID_NET] = VIRTIO_NET_DRV_NAME, [VIRTIO_ID_BLOCK] = VIRTIO_BLK_DRV_NAME, + [VIRTIO_ID_RNG] = VIRTIO_RNG_DRV_NAME, }; int virtio_get_config(struct udevice *vdev, unsigned int offset, diff --git a/drivers/virtio/virtio_rng.c b/drivers/virtio/virtio_rng.c new file mode 100644 index 0000000..19a0cc1 --- /dev/null +++ b/drivers/virtio/virtio_rng.c @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2019, Linaro Limited + */ + +#include +#include +#include +#include +#include +#include + +struct virtio_rng_priv { + struct virtqueue *rng_vq; +}; + +static int virtio_rng_read(struct udevice *dev, void *data, size_t len) +{ + struct virtio_sg sg = { data, len }; + struct virtio_sg *sgs[] = { &sg }; + struct virtio_rng_priv *priv = dev_get_priv(dev); + unsigned int rsize; + int ret; + + ret = virtqueue_add(priv->rng_vq, sgs, 0, 1); + if (ret) + return ret; + + virtqueue_kick(priv->rng_vq); + + while (!virtqueue_get_buf(priv->rng_vq, &rsize)) + ; + + return rsize; +} + +static int virtio_rng_bind(struct udevice *dev) +{ + struct virtio_dev_priv *uc_priv = dev_get_uclass_priv(dev->parent); + + /* Indicate what driver features we support */ + virtio_driver_features_init(uc_priv, NULL, 0, NULL, 0); + + return 0; +} + +static int virtio_rng_probe(struct udevice *dev) +{ + struct virtio_rng_priv *priv = dev_get_priv(dev); + int ret; + + ret = virtio_find_vqs(dev, 1, &priv->rng_vq); + if (ret < 0) + return ret; + + return 0; +} + +static const struct dm_rng_ops virtio_rng_ops = { + .read = virtio_rng_read, +}; + +U_BOOT_DRIVER(virtio_rng) = { + .name = VIRTIO_RNG_DRV_NAME, + .id = UCLASS_RNG, + .bind = virtio_rng_bind, + .probe = virtio_rng_probe, + .remove = virtio_reset, + .ops = &virtio_rng_ops, + .priv_auto_alloc_size = sizeof(struct virtio_rng_priv), + .flags = DM_FLAG_ACTIVE_DMA, +}; diff --git a/include/virtio.h b/include/virtio.h index 654fdf1..561dcc3 100644 --- a/include/virtio.h +++ b/include/virtio.h @@ -22,10 +22,12 @@ #define VIRTIO_ID_NET 1 /* virtio net */ #define VIRTIO_ID_BLOCK 2 /* virtio block */ -#define VIRTIO_ID_MAX_NUM 3 +#define VIRTIO_ID_RNG 4 /* virtio rng */ +#define VIRTIO_ID_MAX_NUM 5 #define VIRTIO_NET_DRV_NAME "virtio-net" #define VIRTIO_BLK_DRV_NAME "virtio-blk" +#define VIRTIO_RNG_DRV_NAME "virtio-rng" /* Status byte for guest to report progress, and synchronize features */