diff options
Diffstat (limited to 'target/linux/octeon/patches/016-octeon_hw_rng.patch')
| -rw-r--r-- | target/linux/octeon/patches/016-octeon_hw_rng.patch | 351 |
1 files changed, 0 insertions, 351 deletions
diff --git a/target/linux/octeon/patches/016-octeon_hw_rng.patch b/target/linux/octeon/patches/016-octeon_hw_rng.patch deleted file mode 100644 index 65afe77..0000000 --- a/target/linux/octeon/patches/016-octeon_hw_rng.patch +++ /dev/null @@ -1,351 +0,0 @@ -From: David Daney <ddaney@caviumnetworks.com> -Date: Thu, 20 Aug 2009 21:10:22 +0000 (-0700) -Subject: MIPS: Octeon: Add hardware RNG platform device. -X-Git-Tag: linux-2.6.32-rc1~34 -X-Git-Url: http://www.linux-mips.org/git?p=linux.git;a=commitdiff_plain;h=c691b963;hp=a68577bc6ce2b5e422cdb7a993b1c07cc410e02a - -MIPS: Octeon: Add hardware RNG platform device. - -Add a platform device for the Octeon Random Number Generator (RNG). - -Signed-off-by: David Daney <ddaney@caviumnetworks.com> -Acked-by: Herbert Xu <herbert@gondor.apana.org.au> -Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---- - -Index: linux-2.6.30.8/arch/mips/cavium-octeon/setup.c -=================================================================== ---- linux-2.6.30.8.orig/arch/mips/cavium-octeon/setup.c 2009-09-24 17:28:02.000000000 +0200 -+++ linux-2.6.30.8/arch/mips/cavium-octeon/setup.c 2009-10-08 13:10:09.000000000 +0200 -@@ -32,6 +32,7 @@ - #include <asm/time.h> - - #include <asm/octeon/octeon.h> -+#include <asm/octeon/cvmx-rnm-defs.h> - - #ifdef CONFIG_CAVIUM_DECODE_RSL - extern void cvmx_interrupt_rsl_decode(void); -@@ -925,3 +926,45 @@ - return ret; - } - device_initcall(octeon_cf_device_init); -+ -+/* Octeon Random Number Generator. */ -+static int __init octeon_rng_device_init(void) -+{ -+ struct platform_device *pd; -+ int ret = 0; -+ -+ struct resource rng_resources[] = { -+ { -+ .flags = IORESOURCE_MEM, -+ .start = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS), -+ .end = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS) + 0xf -+ }, { -+ .flags = IORESOURCE_MEM, -+ .start = cvmx_build_io_address(8, 0), -+ .end = cvmx_build_io_address(8, 0) + 0x7 -+ } -+ }; -+ -+ pd = platform_device_alloc("octeon_rng", -1); -+ if (!pd) { -+ ret = -ENOMEM; -+ goto out; -+ } -+ -+ ret = platform_device_add_resources(pd, rng_resources, -+ ARRAY_SIZE(rng_resources)); -+ if (ret) -+ goto fail; -+ -+ ret = platform_device_add(pd); -+ if (ret) -+ goto fail; -+ -+ return ret; -+fail: -+ platform_device_put(pd); -+ -+out: -+ return ret; -+} -+device_initcall(octeon_rng_device_init); -Index: linux-2.6.30.8/arch/mips/include/asm/octeon/cvmx-rnm-defs.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.30.8/arch/mips/include/asm/octeon/cvmx-rnm-defs.h 2009-10-08 13:10:09.000000000 +0200 -@@ -0,0 +1,88 @@ -+/***********************license start*************** -+ * Author: Cavium Networks -+ * -+ * Contact: support@caviumnetworks.com -+ * This file is part of the OCTEON SDK -+ * -+ * Copyright (c) 2003-2008 Cavium Networks -+ * -+ * This file is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License, Version 2, as -+ * published by the Free Software Foundation. -+ * -+ * This file is distributed in the hope that it will be useful, but -+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty -+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or -+ * NONINFRINGEMENT. See the GNU General Public License for more -+ * details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this file; if not, write to the Free Software -+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -+ * or visit http://www.gnu.org/licenses/. -+ * -+ * This file may also be available under a different license from Cavium. -+ * Contact Cavium Networks for more information -+ ***********************license end**************************************/ -+ -+#ifndef __CVMX_RNM_DEFS_H__ -+#define __CVMX_RNM_DEFS_H__ -+ -+#include <linux/types.h> -+ -+#define CVMX_RNM_BIST_STATUS \ -+ CVMX_ADD_IO_SEG(0x0001180040000008ull) -+#define CVMX_RNM_CTL_STATUS \ -+ CVMX_ADD_IO_SEG(0x0001180040000000ull) -+ -+union cvmx_rnm_bist_status { -+ uint64_t u64; -+ struct cvmx_rnm_bist_status_s { -+ uint64_t reserved_2_63:62; -+ uint64_t rrc:1; -+ uint64_t mem:1; -+ } s; -+ struct cvmx_rnm_bist_status_s cn30xx; -+ struct cvmx_rnm_bist_status_s cn31xx; -+ struct cvmx_rnm_bist_status_s cn38xx; -+ struct cvmx_rnm_bist_status_s cn38xxp2; -+ struct cvmx_rnm_bist_status_s cn50xx; -+ struct cvmx_rnm_bist_status_s cn52xx; -+ struct cvmx_rnm_bist_status_s cn52xxp1; -+ struct cvmx_rnm_bist_status_s cn56xx; -+ struct cvmx_rnm_bist_status_s cn56xxp1; -+ struct cvmx_rnm_bist_status_s cn58xx; -+ struct cvmx_rnm_bist_status_s cn58xxp1; -+}; -+ -+union cvmx_rnm_ctl_status { -+ uint64_t u64; -+ struct cvmx_rnm_ctl_status_s { -+ uint64_t reserved_9_63:55; -+ uint64_t ent_sel:4; -+ uint64_t exp_ent:1; -+ uint64_t rng_rst:1; -+ uint64_t rnm_rst:1; -+ uint64_t rng_en:1; -+ uint64_t ent_en:1; -+ } s; -+ struct cvmx_rnm_ctl_status_cn30xx { -+ uint64_t reserved_4_63:60; -+ uint64_t rng_rst:1; -+ uint64_t rnm_rst:1; -+ uint64_t rng_en:1; -+ uint64_t ent_en:1; -+ } cn30xx; -+ struct cvmx_rnm_ctl_status_cn30xx cn31xx; -+ struct cvmx_rnm_ctl_status_cn30xx cn38xx; -+ struct cvmx_rnm_ctl_status_cn30xx cn38xxp2; -+ struct cvmx_rnm_ctl_status_s cn50xx; -+ struct cvmx_rnm_ctl_status_s cn52xx; -+ struct cvmx_rnm_ctl_status_s cn52xxp1; -+ struct cvmx_rnm_ctl_status_s cn56xx; -+ struct cvmx_rnm_ctl_status_s cn56xxp1; -+ struct cvmx_rnm_ctl_status_s cn58xx; -+ struct cvmx_rnm_ctl_status_s cn58xxp1; -+}; -+ -+#endif -Index: linux-2.6.30.8/drivers/char/hw_random/Kconfig -=================================================================== ---- linux-2.6.30.8.orig/drivers/char/hw_random/Kconfig 2009-09-24 17:28:02.000000000 +0200 -+++ linux-2.6.30.8/drivers/char/hw_random/Kconfig 2009-10-08 13:10:09.000000000 +0200 -@@ -126,6 +126,19 @@ - - If unsure, say Y. - -+config HW_RANDOM_OCTEON -+ tristate "Octeon Random Number Generator support" -+ depends on HW_RANDOM && CPU_CAVIUM_OCTEON -+ default HW_RANDOM -+ ---help--- -+ This driver provides kernel-side support for the Random Number -+ Generator hardware found on Octeon processors. -+ -+ To compile this driver as a module, choose M here: the -+ module will be called octeon-rng. -+ -+ If unsure, say Y. -+ - config HW_RANDOM_PASEMI - tristate "PA Semi HW Random Number Generator support" - depends on HW_RANDOM && PPC_PASEMI -Index: linux-2.6.30.8/drivers/char/hw_random/Makefile -=================================================================== ---- linux-2.6.30.8.orig/drivers/char/hw_random/Makefile 2009-09-24 17:28:02.000000000 +0200 -+++ linux-2.6.30.8/drivers/char/hw_random/Makefile 2009-10-08 13:10:23.000000000 +0200 -@@ -15,3 +15,4 @@ - obj-$(CONFIG_HW_RANDOM_OMAP) += omap-rng.o - obj-$(CONFIG_HW_RANDOM_PASEMI) += pasemi-rng.o - obj-$(CONFIG_HW_RANDOM_VIRTIO) += virtio-rng.o -+obj-$(CONFIG_HW_RANDOM_OCTEON) += octeon-rng.o -Index: linux-2.6.30.8/drivers/char/hw_random/octeon-rng.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.30.8/drivers/char/hw_random/octeon-rng.c 2009-10-08 13:10:09.000000000 +0200 -@@ -0,0 +1,147 @@ -+/* -+ * Hardware Random Number Generator support for Cavium Networks -+ * Octeon processor family. -+ * -+ * 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) 2009 Cavium Networks -+ */ -+ -+#include <linux/module.h> -+#include <linux/init.h> -+#include <linux/platform_device.h> -+#include <linux/device.h> -+#include <linux/hw_random.h> -+#include <linux/io.h> -+ -+#include <asm/octeon/octeon.h> -+#include <asm/octeon/cvmx-rnm-defs.h> -+ -+struct octeon_rng { -+ struct hwrng ops; -+ void __iomem *control_status; -+ void __iomem *result; -+}; -+ -+static int octeon_rng_init(struct hwrng *rng) -+{ -+ union cvmx_rnm_ctl_status ctl; -+ struct octeon_rng *p = container_of(rng, struct octeon_rng, ops); -+ -+ ctl.u64 = 0; -+ ctl.s.ent_en = 1; /* Enable the entropy source. */ -+ ctl.s.rng_en = 1; /* Enable the RNG hardware. */ -+ cvmx_write_csr((u64)p->control_status, ctl.u64); -+ return 0; -+} -+ -+static void octeon_rng_cleanup(struct hwrng *rng) -+{ -+ union cvmx_rnm_ctl_status ctl; -+ struct octeon_rng *p = container_of(rng, struct octeon_rng, ops); -+ -+ ctl.u64 = 0; -+ /* Disable everything. */ -+ cvmx_write_csr((u64)p->control_status, ctl.u64); -+} -+ -+static int octeon_rng_data_read(struct hwrng *rng, u32 *data) -+{ -+ struct octeon_rng *p = container_of(rng, struct octeon_rng, ops); -+ -+ *data = cvmx_read64_uint32((u64)p->result); -+ return sizeof(u32); -+} -+ -+static int __devinit octeon_rng_probe(struct platform_device *pdev) -+{ -+ struct resource *res_ports; -+ struct resource *res_result; -+ struct octeon_rng *rng; -+ int ret; -+ struct hwrng ops = { -+ .name = "octeon", -+ .init = octeon_rng_init, -+ .cleanup = octeon_rng_cleanup, -+ .data_read = octeon_rng_data_read -+ }; -+ -+ rng = devm_kzalloc(&pdev->dev, sizeof(*rng), GFP_KERNEL); -+ if (!rng) -+ return -ENOMEM; -+ -+ res_ports = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ if (!res_ports) -+ goto err_ports; -+ -+ res_result = platform_get_resource(pdev, IORESOURCE_MEM, 1); -+ if (!res_result) -+ goto err_ports; -+ -+ -+ rng->control_status = devm_ioremap_nocache(&pdev->dev, -+ res_ports->start, -+ sizeof(u64)); -+ if (!rng->control_status) -+ goto err_ports; -+ -+ rng->result = devm_ioremap_nocache(&pdev->dev, -+ res_result->start, -+ sizeof(u64)); -+ if (!rng->result) -+ goto err_r; -+ -+ rng->ops = ops; -+ -+ dev_set_drvdata(&pdev->dev, &rng->ops); -+ ret = hwrng_register(&rng->ops); -+ if (ret) -+ goto err; -+ -+ dev_info(&pdev->dev, "Octeon Random Number Generator\n"); -+ -+ return 0; -+err: -+ devm_iounmap(&pdev->dev, rng->control_status); -+err_r: -+ devm_iounmap(&pdev->dev, rng->result); -+err_ports: -+ devm_kfree(&pdev->dev, rng); -+ return -ENOENT; -+} -+ -+static int __exit octeon_rng_remove(struct platform_device *pdev) -+{ -+ struct hwrng *rng = dev_get_drvdata(&pdev->dev); -+ -+ hwrng_unregister(rng); -+ -+ return 0; -+} -+ -+static struct platform_driver octeon_rng_driver = { -+ .driver = { -+ .name = "octeon_rng", -+ .owner = THIS_MODULE, -+ }, -+ .probe = octeon_rng_probe, -+ .remove = __exit_p(octeon_rng_remove), -+}; -+ -+static int __init octeon_rng_mod_init(void) -+{ -+ return platform_driver_register(&octeon_rng_driver); -+} -+ -+static void __exit octeon_rng_mod_exit(void) -+{ -+ platform_driver_unregister(&octeon_rng_driver); -+} -+ -+module_init(octeon_rng_mod_init); -+module_exit(octeon_rng_mod_exit); -+ -+MODULE_AUTHOR("David Daney"); -+MODULE_LICENSE("GPL"); |