subject:"svn commit\: r303035 \- in head\/sys\: arm\/broadcom\/bcm2835 boot\/fdt\/dts\/arm sys"

Re: svn commit: r303035 - in head/sys: arm/broadcom/bcm2835 boot/fdt/dts/arm sys

2016-07-19 Thread Mark R V Murray

Hi *

I'm going to get a bollicking for the formatting in this. Apologies in advance!

M

> On 19 Jul 2016, at 19:07, Mark Murray  wrote:
> 
> Author: markm
> Date: Tue Jul 19 18:07:47 2016
> New Revision: 303035
> URL: https://svnweb.freebsd.org/changeset/base/303035
> 
> Log:
>  Random bit generator (RBG) driver for RPi and RPi2.
> 
>  Summary:
>  This driver supports the following methods to trigger gathering random bits 
> from the hardware:
>  1. interrupt when the FIFO is full (default) fed into the harvest queue
>  2. callout (when BCM2835_RNG_USE_CALLOUT is defined) every second if hz is 
> less than 100, otherwise hz / 100, feeding the random bits into the harvest 
> queue
> 
>  If the kernel is booted with verbose enabled, the contents of the registers 
> will be dumped after the RBG is started during the attach routine.
> 
>  Author: hackagadget_gmail.com (Stephen J. Kiernan)
> 
>  Test Plan: Built RPI2 kernel and booted on board. Tested the different 
> methods to feed the harvest queue (callout, interrupt) and the interrupt 
> driven approach seems best. However, keeping the other method for people to 
> be able to experiment with.
> 
>  Reviewed By: adrian, delphij, markm
> 
>  Differential Revision: https://reviews.freebsd.org/D6888
> 
> Added:
>  head/sys/arm/broadcom/bcm2835/bcm2835_rng.c   (contents, props changed)
> Modified:
>  head/sys/arm/broadcom/bcm2835/files.bcm283x
>  head/sys/boot/fdt/dts/arm/bcm2835.dtsi
>  head/sys/boot/fdt/dts/arm/bcm2836.dtsi
>  head/sys/sys/random.h
> 
> Added: head/sys/arm/broadcom/bcm2835/bcm2835_rng.c
> ==
> --- /dev/null 00:00:00 1970   (empty, because file is newly added)
> +++ head/sys/arm/broadcom/bcm2835/bcm2835_rng.c   Tue Jul 19 18:07:47 
> 2016(r303035)
> @@ -0,0 +1,534 @@
> +/*
> + * Copyright (c) 2015, 2016, Stephen J. Kiernan
> + * All rights reserved.
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + * 1. Redistributions of source code must retain the above copyright
> + *notice, this list of conditions and the following disclaimer.
> + * 2. Redistributions in binary form must reproduce the above copyright
> + *notice, this list of conditions and the following disclaimer in the
> + *documentation and/or other materials provided with the distribution.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
> + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
> + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
> + * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
> + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
> + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
> + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> + * SUCH DAMAGE.
> + */
> +
> +#include 
> +
> +__FBSDID("$FreeBSD$");
> +
> +#include 
> +#include 
> +#include 
> +#include 
> +#include 
> +#include 
> +#include 
> +#include 
> +#include 
> +#include 
> +#include 
> +#include 
> +
> +#include 
> +#include 
> +
> +#include 
> +#include 
> +#include 
> +
> +#include 
> +#include 
> +
> +#if !defined(BCM2835_RNG_USE_CALLOUT)
> +#define  BCM2835_RNG_USE_INTERRUPT
> +#endif
> +
> +static device_attach_t bcm2835_rng_attach;
> +static device_detach_t bcm2835_rng_detach;
> +static device_probe_t bcm2835_rng_probe;
> +
> +#define  RNG_CTRL0x00/* RNG Control Register 
> */
> +#define  RNG_COMBLK1_OSC 0x003f  /*  Combiner Blk 1 
> Oscillator */
> +#define  RNG_COMBLK1_OSC_SHIFT   16
> +#define  RNG_COMBLK2_OSC 0x0fc0  /*  Combiner Blk 2 
> Oscillator */
> +#define  RNG_COMBLK2_OSC_SHIFT   22
> +#define  RNG_JCLK_BYP_DIV_CNT0xff00  /*  Jitter clk bypass 
> divider
> + count */
> +#define  RNG_JCLK_BYP_DIV_CNT_SHIFT 8
> +#define  RNG_JCLK_BYP_SRC0x0020  /*  Jitter clk bypass 
> source */
> +#define  RNG_JCLK_BYP_SEL0x0010  /*  Jitter clk bypass 
> select */
> +#define  RNG_RBG2X   0x0002  /*  RBG 2X SPEED */
> +#define  RNG_RBGEN_BIT   0x0001  /*  Enable RNG bit */
> +
> +#define  RNG_STATUS  0x04/* RNG status register 
> */
> +#define  RND_VAL_SHIFT   24  /*  Shift for valid 
> words */
> +#define  RND_VAL_MASK0x00ff  /*  Number valid

svn commit: r303035 - in head/sys: arm/broadcom/bcm2835 boot/fdt/dts/arm sys

2016-07-19 Thread Mark Murray

Author: markm
Date: Tue Jul 19 18:07:47 2016
New Revision: 303035
URL: https://svnweb.freebsd.org/changeset/base/303035

Log:
  Random bit generator (RBG) driver for RPi and RPi2.
  
  Summary:
  This driver supports the following methods to trigger gathering random bits 
from the hardware:
  1. interrupt when the FIFO is full (default) fed into the harvest queue
  2. callout (when BCM2835_RNG_USE_CALLOUT is defined) every second if hz is 
less than 100, otherwise hz / 100, feeding the random bits into the harvest 
queue
  
  If the kernel is booted with verbose enabled, the contents of the registers 
will be dumped after the RBG is started during the attach routine.
  
  Author: hackagadget_gmail.com (Stephen J. Kiernan)
  
  Test Plan: Built RPI2 kernel and booted on board. Tested the different 
methods to feed the harvest queue (callout, interrupt) and the interrupt driven 
approach seems best. However, keeping the other method for people to be able to 
experiment with.
  
  Reviewed By: adrian, delphij, markm
  
  Differential Revision: https://reviews.freebsd.org/D6888

Added:
  head/sys/arm/broadcom/bcm2835/bcm2835_rng.c   (contents, props changed)
Modified:
  head/sys/arm/broadcom/bcm2835/files.bcm283x
  head/sys/boot/fdt/dts/arm/bcm2835.dtsi
  head/sys/boot/fdt/dts/arm/bcm2836.dtsi
  head/sys/sys/random.h

Added: head/sys/arm/broadcom/bcm2835/bcm2835_rng.c
==
--- /dev/null   00:00:00 1970   (empty, because file is newly added)
+++ head/sys/arm/broadcom/bcm2835/bcm2835_rng.c Tue Jul 19 18:07:47 2016
(r303035)
@@ -0,0 +1,534 @@
+/*
+ * Copyright (c) 2015, 2016, Stephen J. Kiernan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *notice, this list of conditions and the following disclaimer in the
+ *documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include 
+
+__FBSDID("$FreeBSD$");
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+
+#include 
+#include 
+
+#include 
+#include 
+#include 
+
+#include 
+#include 
+
+#if !defined(BCM2835_RNG_USE_CALLOUT)
+#defineBCM2835_RNG_USE_INTERRUPT
+#endif
+
+static device_attach_t bcm2835_rng_attach;
+static device_detach_t bcm2835_rng_detach;
+static device_probe_t bcm2835_rng_probe;
+
+#defineRNG_CTRL0x00/* RNG Control Register 
*/
+#defineRNG_COMBLK1_OSC 0x003f  /*  Combiner Blk 1 
Oscillator */
+#defineRNG_COMBLK1_OSC_SHIFT   16
+#defineRNG_COMBLK2_OSC 0x0fc0  /*  Combiner Blk 2 
Oscillator */
+#defineRNG_COMBLK2_OSC_SHIFT   22
+#defineRNG_JCLK_BYP_DIV_CNT0xff00  /*  Jitter clk bypass 
divider
+   count */
+#defineRNG_JCLK_BYP_DIV_CNT_SHIFT 8
+#defineRNG_JCLK_BYP_SRC0x0020  /*  Jitter clk bypass 
source */
+#defineRNG_JCLK_BYP_SEL0x0010  /*  Jitter clk bypass 
select */
+#defineRNG_RBG2X   0x0002  /*  RBG 2X SPEED */
+#defineRNG_RBGEN_BIT   0x0001  /*  Enable RNG bit */
+
+#defineRNG_STATUS  0x04/* RNG status register 
*/
+#defineRND_VAL_SHIFT   24  /*  Shift for valid 
words */
+#defineRND_VAL_MASK0x00ff  /*  Number valid words 
mask */
+#defineRND_VAL_WARM_CNT0x4 /*  RNG Warm Up count */
+#defineRND_WARM_CNT0xf /*  RNG Warm Up Count 
mask */
+
+#defineRNG_DATA0x08/* RNG Data Register */
+#defineRNG_FF_THRES0x0c
+#defineRNG_FF_THRES_MASK   0x001f
+

Re: svn commit: r303035 - in head/sys: arm/broadcom/bcm2835 boot/fdt/dts/arm sys

svn commit: r303035 - in head/sys: arm/broadcom/bcm2835 boot/fdt/dts/arm sys

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