sunxi: deprecate 3.12 support

Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>

SVN-Revision: 39780

1 files changed, 0 insertions, 290 deletions

diff --git a/target/linux/sunxi/patches-3.12/170-sunxi-sid-initial.patch b/target/linux/sunxi/patches-3.12/170-sunxi-sid-initial.patch
deleted file mode 100644
index 8407b2f998..0000000000
--- a/target/linux/sunxi/patches-3.12/170-sunxi-sid-initial.patch
+++ /dev/null
@@ -1,290 +0,0 @@
-From 1d4b3ab562fa87e2c7f05cf92af1ff4b6cd42581 Mon Sep 17 00:00:00 2001
-From: Oliver Schinagl <oliver@schinagl.nl>
-Date: Tue, 3 Sep 2013 12:33:27 +0200
-Subject: [PATCH] ARM: sunxi: Initial support for Allwinner's Security ID fuses
-
-Allwinner has electric fuses (efuse) on their line of chips. This driver
-reads those fuses, seeds the kernel entropy and exports them as a sysfs
-node.
-
-These fuses are most likely to be programmed at the factory, encoding
-things like Chip ID, some sort of serial number, etc. and appear to be
-reasonably unique.
-While in theory, these should be writeable by the user, it will probably
-be inconvenient to do so. Allwinner recommends that a certain input pin,
-labeled 'efuse_vddq', be connected to GND. To write these fuses however,
-a 2.5 V programming voltage needs to be applied to this pin.
-
-Even so, they can still be used to generate a board-unique mac from,
-board unique RSA key and seed the kernel RNG.
-
-On sun7i additional storage is available, this is initially used for an
-UEFI BOOT key, Secure JTAG key, HDMI-HDCP key and vendor specific keys.
-
-Currently supported are the following known chips:
-Allwinner sun4i (A10)
-Allwinner sun5i (A10s, A13)
-Allwinner sun7i (A20)
-
-Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
----
- Documentation/ABI/testing/sysfs-driver-sunxi-sid   |  22 +++
- .../bindings/misc/allwinner,sunxi-sid.txt          |  17 +++
- drivers/misc/eeprom/Kconfig                        |  13 ++
- drivers/misc/eeprom/Makefile                       |   1 +
- drivers/misc/eeprom/sunxi_sid.c                    | 158 +++++++++++++++++++++
- 5 files changed, 211 insertions(+)
- create mode 100644 Documentation/ABI/testing/sysfs-driver-sunxi-sid
- create mode 100644 Documentation/devicetree/bindings/misc/allwinner,sunxi-sid.txt
- create mode 100644 drivers/misc/eeprom/sunxi_sid.c
-
-diff --git a/Documentation/ABI/testing/sysfs-driver-sunxi-sid b/Documentation/ABI/testing/sysfs-driver-sunxi-sid
-new file mode 100644
-index 0000000..ffb9536
---- /dev/null
-+++ b/Documentation/ABI/testing/sysfs-driver-sunxi-sid
-@@ -0,0 +1,22 @@
-+What:		/sys/devices/*/<our-device>/eeprom
-+Date:		August 2013
-+Contact:	Oliver Schinagl <oliver@schinagl.nl>
-+Description:	read-only access to the SID (Security-ID) on current
-+		A-series SoC's from Allwinner. Currently supports A10, A10s, A13
-+		and A20 CPU's. The earlier A1x series of SoCs exports 16 bytes,
-+		whereas the newer A20 SoC exposes 512 bytes split into sections.
-+		Besides the 16 bytes of SID, there's also an SJTAG area,
-+		HDMI-HDCP key and some custom keys. Below a quick overview, for
-+		details see the user manual:
-+		0x000  128 bit root-key (sun[457]i)
-+		0x010  128 bit boot-key (sun7i)
-+		0x020   64 bit security-jtag-key (sun7i)
-+		0x028   16 bit key configuration (sun7i)
-+		0x02b   16 bit custom-vendor-key (sun7i)
-+		0x02c  320 bit low general key (sun7i)
-+		0x040   32 bit read-control access (sun7i)
-+		0x064  224 bit low general key (sun7i)
-+		0x080 2304 bit HDCP-key (sun7i)
-+		0x1a0  768 bit high general key (sun7i)
-+Users:		any user space application which wants to read the SID on
-+		Allwinner's A-series of CPU's.
-diff --git a/Documentation/devicetree/bindings/misc/allwinner,sunxi-sid.txt b/Documentation/devicetree/bindings/misc/allwinner,sunxi-sid.txt
-new file mode 100644
-index 0000000..68ba372
---- /dev/null
-+++ b/Documentation/devicetree/bindings/misc/allwinner,sunxi-sid.txt
-@@ -0,0 +1,17 @@
-+Allwinner sunxi-sid
-+
-+Required properties:
-+- compatible: "allwinner,sun4i-sid" or "allwinner,sun7i-a20-sid".
-+- reg: Should contain registers location and length
-+
-+Example for sun4i:
-+	sid@01c23800 {
-+		compatible = "allwinner,sun4i-sid";
-+		reg = <0x01c23800 0x10>
-+	};
-+
-+Example for sun7i:
-+	sid@01c23800 {
-+		compatible = "allwinner,sun7i-a20-sid";
-+		reg = <0x01c23800 0x200>
-+	};
-diff --git a/drivers/misc/eeprom/Kconfig b/drivers/misc/eeprom/Kconfig
-index 04f2e1f..9536852f 100644
---- a/drivers/misc/eeprom/Kconfig
-+++ b/drivers/misc/eeprom/Kconfig
-@@ -96,4 +96,17 @@ config EEPROM_DIGSY_MTC_CFG
- 
- 	  If unsure, say N.
- 
-+config EEPROM_SUNXI_SID
-+	tristate "Allwinner sunxi security ID support"
-+	depends on ARCH_SUNXI && SYSFS
-+	help
-+	  This is a driver for the 'security ID' available on various Allwinner
-+	  devices.
-+
-+	  Due to the potential risks involved with changing e-fuses,
-+	  this driver is read-only.
-+
-+	  This driver can also be built as a module. If so, the module
-+	  will be called sunxi_sid.
-+
- endmenu
-diff --git a/drivers/misc/eeprom/Makefile b/drivers/misc/eeprom/Makefile
-index fc1e81d..9507aec 100644
---- a/drivers/misc/eeprom/Makefile
-+++ b/drivers/misc/eeprom/Makefile
-@@ -4,4 +4,5 @@ obj-$(CONFIG_EEPROM_LEGACY)	+= eeprom.o
- obj-$(CONFIG_EEPROM_MAX6875)	+= max6875.o
- obj-$(CONFIG_EEPROM_93CX6)	+= eeprom_93cx6.o
- obj-$(CONFIG_EEPROM_93XX46)	+= eeprom_93xx46.o
-+obj-$(CONFIG_EEPROM_SUNXI_SID)	+= sunxi_sid.o
- obj-$(CONFIG_EEPROM_DIGSY_MTC_CFG) += digsy_mtc_eeprom.o
-diff --git a/drivers/misc/eeprom/sunxi_sid.c b/drivers/misc/eeprom/sunxi_sid.c
-new file mode 100644
-index 0000000..9c34e57
---- /dev/null
-+++ b/drivers/misc/eeprom/sunxi_sid.c
-@@ -0,0 +1,158 @@
-+/*
-+ * Copyright (c) 2013 Oliver Schinagl <oliver@schinagl.nl>
-+ * http://www.linux-sunxi.org
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or
-+ * (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ *
-+ * This driver exposes the Allwinner security ID, efuses exported in byte-
-+ * sized chunks.
-+ */
-+
-+#include <linux/compiler.h>
-+#include <linux/device.h>
-+#include <linux/err.h>
-+#include <linux/export.h>
-+#include <linux/fs.h>
-+#include <linux/init.h>
-+#include <linux/io.h>
-+#include <linux/kernel.h>
-+#include <linux/kobject.h>
-+#include <linux/module.h>
-+#include <linux/of_device.h>
-+#include <linux/platform_device.h>
-+#include <linux/random.h>
-+#include <linux/slab.h>
-+#include <linux/stat.h>
-+#include <linux/sysfs.h>
-+#include <linux/types.h>
-+
-+#define DRV_NAME "sunxi-sid"
-+
-+struct sunxi_sid_data {
-+	void __iomem *reg_base;
-+	unsigned int keysize;
-+};
-+
-+/* We read the entire key, due to a 32 bit read alignment requirement. Since we
-+ * want to return the requested byte, this results in somewhat slower code and
-+ * uses 4 times more reads as needed but keeps code simpler. Since the SID is
-+ * only very rarely probed, this is not really an issue.
-+ */
-+static u8 sunxi_sid_read_byte(const struct sunxi_sid_data *sid_data,
-+			      const unsigned int offset)
-+{
-+	u32 sid_key;
-+
-+	if (offset >= sid_data->keysize)
-+		return 0;
-+
-+	sid_key = ioread32be(sid_data->reg_base + round_down(offset, 4));
-+	sid_key >>= (offset % 4) * 8;
-+
-+	return sid_key; /* Only return the last byte */
-+}
-+
-+static ssize_t sid_read(struct file *fd, struct kobject *kobj,
-+			struct bin_attribute *attr, char *buf,
-+			loff_t pos, size_t size)
-+{
-+	struct platform_device *pdev;
-+	struct sunxi_sid_data *sid_data;
-+	int i;
-+
-+	pdev = to_platform_device(kobj_to_dev(kobj));
-+	sid_data = platform_get_drvdata(pdev);
-+
-+	if (pos < 0 || pos >= sid_data->keysize)
-+		return 0;
-+	if (size > sid_data->keysize - pos)
-+		size = sid_data->keysize - pos;
-+
-+	for (i = 0; i < size; i++)
-+		buf[i] = sunxi_sid_read_byte(sid_data, pos + i);
-+
-+	return i;
-+}
-+
-+static struct bin_attribute sid_bin_attr = {
-+	.attr = { .name = "eeprom", .mode = S_IRUGO, },
-+	.read = sid_read,
-+};
-+
-+static int sunxi_sid_remove(struct platform_device *pdev)
-+{
-+	device_remove_bin_file(&pdev->dev, &sid_bin_attr);
-+	dev_dbg(&pdev->dev, "driver unloaded\n");
-+
-+	return 0;
-+}
-+
-+static const struct of_device_id sunxi_sid_of_match[] = {
-+	{ .compatible = "allwinner,sun4i-sid", .data = (void *)16},
-+	{ .compatible = "allwinner,sun7i-a20-sid", .data = (void *)512},
-+	{/* sentinel */},
-+};
-+MODULE_DEVICE_TABLE(of, sunxi_sid_of_match);
-+
-+static int sunxi_sid_probe(struct platform_device *pdev)
-+{
-+	struct sunxi_sid_data *sid_data;
-+	struct resource *res;
-+	const struct of_device_id *of_dev_id;
-+	u8 *entropy;
-+	unsigned int i;
-+
-+	sid_data = devm_kzalloc(&pdev->dev, sizeof(struct sunxi_sid_data),
-+				GFP_KERNEL);
-+	if (!sid_data)
-+		return -ENOMEM;
-+
-+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+	sid_data->reg_base = devm_ioremap_resource(&pdev->dev, res);
-+	if (IS_ERR(sid_data->reg_base))
-+		return PTR_ERR(sid_data->reg_base);
-+
-+	of_dev_id = of_match_device(sunxi_sid_of_match, &pdev->dev);
-+	if (!of_dev_id)
-+		return -ENODEV;
-+	sid_data->keysize = (int)of_dev_id->data;
-+
-+	platform_set_drvdata(pdev, sid_data);
-+
-+	sid_bin_attr.size = sid_data->keysize;
-+	if (device_create_bin_file(&pdev->dev, &sid_bin_attr))
-+		return -ENODEV;
-+
-+	entropy = kzalloc(sizeof(u8) * sid_data->keysize, GFP_KERNEL);
-+	for (i = 0; i < sid_data->keysize; i++)
-+		entropy[i] = sunxi_sid_read_byte(sid_data, i);
-+	add_device_randomness(entropy, sid_data->keysize);
-+	kfree(entropy);
-+
-+	dev_dbg(&pdev->dev, "loaded\n");
-+
-+	return 0;
-+}
-+
-+static struct platform_driver sunxi_sid_driver = {
-+	.probe = sunxi_sid_probe,
-+	.remove = sunxi_sid_remove,
-+	.driver = {
-+		.name = DRV_NAME,
-+		.owner = THIS_MODULE,
-+		.of_match_table = sunxi_sid_of_match,
-+	},
-+};
-+module_platform_driver(sunxi_sid_driver);
-+
-+MODULE_AUTHOR("Oliver Schinagl <oliver@schinagl.nl>");
-+MODULE_DESCRIPTION("Allwinner sunxi security id driver");
-+MODULE_LICENSE("GPL");
--- 
-1.8.4
-