Re: [PATCH 5/7] sandbox: rng: Add a random number generator(rng) driver
On Wed, 4 Dec 2019 at 04:54, Sughosh Ganu wrote: > > Add a sandbox driver for random number generation. Mostly aimed at > providing a unit test for rng uclass. > > Signed-off-by: Sughosh Ganu > --- > 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 Reviewed-by: Simon Glass
Re: [PATCH 5/7] sandbox: rng: Add a random number generator(rng) driver
On 12/4/19 12:53 PM, Sughosh Ganu wrote:
> Add a sandbox driver for random number generation. Mostly aimed at
> providing a unit test for rng uclass.
>
> Signed-off-by: Sughosh Ganu
> ---
> 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 000..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 = _rng_ops,
> +};
Reviewed-by: Patrice Chotard
Thanks
[PATCH 5/7] sandbox: rng: Add a random number generator(rng) driver
Add a sandbox driver for random number generation. Mostly aimed at
providing a unit test for rng uclass.
Signed-off-by: Sughosh Ganu
---
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 000..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 = _rng_ops,
+};
--
2.7.4
