Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 281 insertions, 0 deletions

diff --git a/kernel/arch/powerpc/platforms/ps3/setup.c b/kernel/arch/powerpc/platforms/ps3/setup.c
new file mode 100644
index 000000000..799c8580a
--- /dev/null
+++ b/kernel/arch/powerpc/platforms/ps3/setup.c
@@ -0,0 +1,281 @@
+/*
+ *  PS3 platform setup routines.
+ *
+ *  Copyright (C) 2006 Sony Computer Entertainment Inc.
+ *  Copyright 2006 Sony Corp.
+ *
+ *  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; version 2 of the License.
+ *
+ *  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.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/root_dev.h>
+#include <linux/console.h>
+#include <linux/export.h>
+#include <linux/bootmem.h>
+
+#include <asm/machdep.h>
+#include <asm/firmware.h>
+#include <asm/time.h>
+#include <asm/iommu.h>
+#include <asm/udbg.h>
+#include <asm/prom.h>
+#include <asm/lv1call.h>
+#include <asm/ps3gpu.h>
+
+#include "platform.h"
+
+#if defined(DEBUG)
+#define DBG udbg_printf
+#else
+#define DBG pr_debug
+#endif
+
+/* mutex synchronizing GPU accesses and video mode changes */
+DEFINE_MUTEX(ps3_gpu_mutex);
+EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
+
+static union ps3_firmware_version ps3_firmware_version;
+
+void ps3_get_firmware_version(union ps3_firmware_version *v)
+{
+	*v = ps3_firmware_version;
+}
+EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
+
+int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
+{
+	union ps3_firmware_version x;
+
+	x.pad = 0;
+	x.major = major;
+	x.minor = minor;
+	x.rev = rev;
+
+	return (ps3_firmware_version.raw > x.raw) -
+	       (ps3_firmware_version.raw < x.raw);
+}
+EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
+
+static void ps3_power_save(void)
+{
+	/*
+	 * lv1_pause() puts the PPE thread into inactive state until an
+	 * irq on an unmasked plug exists. MSR[EE] has no effect.
+	 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
+	 */
+
+	lv1_pause(0);
+}
+
+static void ps3_restart(char *cmd)
+{
+	DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
+
+	smp_send_stop();
+	ps3_sys_manager_restart(); /* never returns */
+}
+
+static void ps3_power_off(void)
+{
+	DBG("%s:%d\n", __func__, __LINE__);
+
+	smp_send_stop();
+	ps3_sys_manager_power_off(); /* never returns */
+}
+
+static void ps3_halt(void)
+{
+	DBG("%s:%d\n", __func__, __LINE__);
+
+	smp_send_stop();
+	ps3_sys_manager_halt(); /* never returns */
+}
+
+static void ps3_panic(char *str)
+{
+	DBG("%s:%d %s\n", __func__, __LINE__, str);
+
+	smp_send_stop();
+	printk("\n");
+	printk("   System does not reboot automatically.\n");
+	printk("   Please press POWER button.\n");
+	printk("\n");
+
+	while(1)
+		lv1_pause(1);
+}
+
+#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
+    defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
+static void __init prealloc(struct ps3_prealloc *p)
+{
+	if (!p->size)
+		return;
+
+	p->address = memblock_virt_alloc(p->size, p->align);
+
+	printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
+	       p->address);
+}
+#endif
+
+#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
+struct ps3_prealloc ps3fb_videomemory = {
+	.name = "ps3fb videomemory",
+	.size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
+	.align = 1024*1024		/* the GPU requires 1 MiB alignment */
+};
+EXPORT_SYMBOL_GPL(ps3fb_videomemory);
+#define prealloc_ps3fb_videomemory()	prealloc(&ps3fb_videomemory)
+
+static int __init early_parse_ps3fb(char *p)
+{
+	if (!p)
+		return 1;
+
+	ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
+					   ps3fb_videomemory.align);
+	return 0;
+}
+early_param("ps3fb", early_parse_ps3fb);
+#else
+#define prealloc_ps3fb_videomemory()	do { } while (0)
+#endif
+
+#if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
+struct ps3_prealloc ps3flash_bounce_buffer = {
+	.name = "ps3flash bounce buffer",
+	.size = 256*1024,
+	.align = 256*1024
+};
+EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
+#define prealloc_ps3flash_bounce_buffer()	prealloc(&ps3flash_bounce_buffer)
+
+static int __init early_parse_ps3flash(char *p)
+{
+	if (!p)
+		return 1;
+
+	if (!strcmp(p, "off"))
+		ps3flash_bounce_buffer.size = 0;
+
+	return 0;
+}
+early_param("ps3flash", early_parse_ps3flash);
+#else
+#define prealloc_ps3flash_bounce_buffer()	do { } while (0)
+#endif
+
+static int ps3_set_dabr(unsigned long dabr, unsigned long dabrx)
+{
+	/* Have to set at least one bit in the DABRX */
+	if (dabrx == 0 && dabr == 0)
+		dabrx = DABRX_USER;
+	/* hypervisor only allows us to set BTI, Kernel and user */
+	dabrx &= DABRX_BTI | DABRX_KERNEL | DABRX_USER;
+
+	return lv1_set_dabr(dabr, dabrx) ? -1 : 0;
+}
+
+static void __init ps3_setup_arch(void)
+{
+	u64 tmp;
+
+	DBG(" -> %s:%d\n", __func__, __LINE__);
+
+	lv1_get_version_info(&ps3_firmware_version.raw, &tmp);
+
+	printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
+	       ps3_firmware_version.major, ps3_firmware_version.minor,
+	       ps3_firmware_version.rev);
+
+	ps3_spu_set_platform();
+
+#ifdef CONFIG_SMP
+	smp_init_ps3();
+#endif
+
+#ifdef CONFIG_DUMMY_CONSOLE
+	conswitchp = &dummy_con;
+#endif
+
+	prealloc_ps3fb_videomemory();
+	prealloc_ps3flash_bounce_buffer();
+
+	ppc_md.power_save = ps3_power_save;
+	ps3_os_area_init();
+
+	DBG(" <- %s:%d\n", __func__, __LINE__);
+}
+
+static void __init ps3_progress(char *s, unsigned short hex)
+{
+	printk("*** %04x : %s\n", hex, s ? s : "");
+}
+
+static int __init ps3_probe(void)
+{
+	unsigned long htab_size;
+	unsigned long dt_root;
+
+	DBG(" -> %s:%d\n", __func__, __LINE__);
+
+	dt_root = of_get_flat_dt_root();
+	if (!of_flat_dt_is_compatible(dt_root, "sony,ps3"))
+		return 0;
+
+	powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
+
+	ps3_os_area_save_params();
+	ps3_mm_init();
+	ps3_mm_vas_create(&htab_size);
+	ps3_hpte_init(htab_size);
+	pm_power_off = ps3_power_off;
+
+	DBG(" <- %s:%d\n", __func__, __LINE__);
+	return 1;
+}
+
+#if defined(CONFIG_KEXEC)
+static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
+{
+	int cpu = smp_processor_id();
+
+	DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
+
+	ps3_smp_cleanup_cpu(cpu);
+	ps3_shutdown_IRQ(cpu);
+
+	DBG(" <- %s:%d\n", __func__, __LINE__);
+}
+#endif
+
+define_machine(ps3) {
+	.name				= "PS3",
+	.probe				= ps3_probe,
+	.setup_arch			= ps3_setup_arch,
+	.init_IRQ			= ps3_init_IRQ,
+	.panic				= ps3_panic,
+	.get_boot_time			= ps3_get_boot_time,
+	.set_dabr			= ps3_set_dabr,
+	.calibrate_decr			= ps3_calibrate_decr,
+	.progress			= ps3_progress,
+	.restart			= ps3_restart,
+	.halt				= ps3_halt,
+#if defined(CONFIG_KEXEC)
+	.kexec_cpu_down			= ps3_kexec_cpu_down,
+#endif
+};