bcm63xx: add driver for the internal hw trng on bcm6368

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31131 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 66 insertions, 0 deletions

diff --git a/target/linux/brcm63xx/patches-3.3/104-MIPS-BCM63XX-add-RNG-driver-platform_device-stub.patch b/target/linux/brcm63xx/patches-3.3/104-MIPS-BCM63XX-add-RNG-driver-platform_device-stub.patch
new file mode 100644
index 0000000000..aec0080784
--- /dev/null
+++ b/target/linux/brcm63xx/patches-3.3/104-MIPS-BCM63XX-add-RNG-driver-platform_device-stub.patch
@@ -0,0 +1,66 @@
+From cfcc8526e97bdcbfcbf945246b878262389b8842 Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <florian@openwrt.org>
+Date: Wed, 25 Jan 2012 17:39:59 +0100
+Subject: [PATCH 17/63] MIPS: BCM63XX: add RNG driver platform_device stub
+
+Signed-off-by: Florian Fainelli <florian@openwrt.org>
+---
+ arch/mips/bcm63xx/Makefile   |    4 ++--
+ arch/mips/bcm63xx/dev-trng.c |   40 ++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 42 insertions(+), 2 deletions(-)
+ create mode 100644 arch/mips/bcm63xx/dev-trng.c
+
+--- a/arch/mips/bcm63xx/Makefile
++++ b/arch/mips/bcm63xx/Makefile
+@@ -1,6 +1,6 @@
+ obj-y		+= clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o \
+-		   dev-dsp.o dev-enet.o dev-pcmcia.o dev-spi.o dev-uart.o \
+-		   dev-wdt.o
++		   dev-dsp.o dev-enet.o dev-pcmcia.o dev-spi.o dev-trng.o \
++		   dev-uart.o dev-wdt.o
+ obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
+ 
+ obj-y		+= boards/
+--- /dev/null
++++ b/arch/mips/bcm63xx/dev-trng.c
+@@ -0,0 +1,40 @@
++/*
++ * This file is subject to the terms and conditions of the GNU General Public
++ * License.  See the file "COPYING" in the main directory of this archive
++ * for more details.
++ *
++ * Copyright (C) 2011 Florian Fainelli <florian@openwrt.org>
++ */
++
++#include <linux/init.h>
++#include <linux/kernel.h>
++#include <linux/platform_device.h>
++#include <bcm63xx_cpu.h>
++
++static struct resource trng_resources[] = {
++	{
++		.start		= -1, /* filled at runtime */
++		.end		= -1, /* filled at runtime */
++		.flags		= IORESOURCE_MEM,
++	},
++};
++
++static struct platform_device bcm63xx_trng_device = {
++	.name		= "bcm63xx-trng",
++	.id		= -1,
++	.num_resources	= ARRAY_SIZE(trng_resources),
++	.resource	= trng_resources,
++};
++
++int __init bcm63xx_trng_register(void)
++{
++	if (!BCMCPU_IS_6368())
++		return -ENODEV;
++
++	trng_resources[0].start = bcm63xx_regset_address(RSET_TRNG);
++	trng_resources[0].end = trng_resources[0].start;
++	trng_resources[0].end += RSET_TRNG_SIZE - 1;
++
++	return platform_device_register(&bcm63xx_trng_device);
++}
++arch_initcall(bcm63xx_trng_register);