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OpenCloudOS-Kernel/arch/arm/mach-zynq/common.c

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ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
/*
* This file contains common code that is intended to be used across
* boards so that it's not replicated.
*
* Copyright (C) 2011 Xilinx
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/cpumask.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
ARM: zynq: use zynq clk bindings Make the Zynq platform use the newly created zynq clk bindings. Signed-off-by: Josh Cartwright <josh.cartwright@ni.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2012-11-09 02:04:26 +08:00
#include <linux/clk/zynq.h>
arm: zynq: Use standard timer binding Use cdns,ttc because this driver is Cadence Rev06 Triple Timer Counter and everybody can use it without xilinx specific function name or probing. Also use standard dt description for timer and also prepare for moving to clocksource initialization. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-20 17:15:28 +08:00
#include <linux/clocksource.h>
ARM: zynq: use zynq clk bindings Make the Zynq platform use the newly created zynq clk bindings. Signed-off-by: Josh Cartwright <josh.cartwright@ni.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2012-11-09 02:04:26 +08:00
#include <linux/of_address.h>
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
#include <linux/of_irq.h>
#include <linux/of_platform.h>
ARM: Xilinx: merge board file into main platform code The zynq platform will never have board files other than the device tree one, so there is no point splitting it from common.c. This makes the code more compact. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: John Linn <john.linn@xilinx.com>
2011-07-07 19:35:20 +08:00
#include <linux/of.h>
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
ARM: Xilinx: merge board file into main platform code The zynq platform will never have board files other than the device tree one, so there is no point splitting it from common.c. This makes the code more compact. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: John Linn <john.linn@xilinx.com>
2011-07-07 19:35:20 +08:00
#include <asm/mach/arch.h>
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
#include <asm/mach/map.h>
ARM: zynq: move arm-specific sys_timer out of ttc Move the sys_timer definition out of ttc driver and make it part of the common zynq code. This is preparation for renaming and COMMON_CLK support. Signed-off-by: Josh Cartwright <josh.cartwright@ni.com> Tested-by: Michal Simek <michal.simek@xilinx.com>
2012-11-01 01:11:59 +08:00
#include <asm/mach/time.h>
ARM: Xilinx: merge board file into main platform code The zynq platform will never have board files other than the device tree one, so there is no point splitting it from common.c. This makes the code more compact. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: John Linn <john.linn@xilinx.com>
2011-07-07 19:35:20 +08:00
#include <asm/mach-types.h>
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
#include <asm/page.h>
ARM: zynq: add support for ARCH_MULTIPLATFORM The majority of changes are necessary to remove dependencies on header files within arch/arm/mach-zynq/include/mach: uncompress.h - Deleted. It is unused for ARCH_MULTIPLATFORM builds. uart.h: - Move uart definitions out of uart.h into debug/zynq.S, which is now the only user zynq_soc.h: - Move SCU address definitions into common.c. - Other #defines, such as PERIPHERAL_CLOCK_RATE, TTC0_BASE, etc, are unused and can be dropped Signed-off-by: Josh Cartwright <josh.cartwright@ni.com> Tested-by: Michal Simek <michal.simek@xilinx.com>
2012-11-20 01:38:29 +08:00
#include <asm/pgtable.h>
arm: zynq: Load scu baseaddress at run time Use Cortex a9 cp15 to read scu baseaddress. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-20 18:11:43 +08:00
#include <asm/smp_scu.h>
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
#include <asm/hardware/cache-l2x0.h>
#include "common.h"
arm: zynq: Load scu baseaddress at run time Use Cortex a9 cp15 to read scu baseaddress. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-20 18:11:43 +08:00
void __iomem *zynq_scu_base;
ARM: zynq: cpuidle: convert to platform driver As the ux500 and the kirkwood driver, make the zynq driver a platform driver Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Michal Simek <michal.simek@xilinx.com> Tested-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
2013-09-22 00:41:02 +08:00
static struct platform_device zynq_cpuidle_device = {
.name = "cpuidle-zynq",
};
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
/**
arm: zynq: Get rid of xilinx function prefix Xilinx is vendor name not SoC name. Use zynq instead. Also remove one checkpatch warning: WARNING: static const char * array should probably be static const char * const +static const char *xilinx_dt_match[] = { Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-27 20:07:00 +08:00
* zynq_init_machine - System specific initialization, intended to be
* called from board specific initialization.
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
*/
arm: zynq: Get rid of xilinx function prefix Xilinx is vendor name not SoC name. Use zynq instead. Also remove one checkpatch warning: WARNING: static const char * array should probably be static const char * const +static const char *xilinx_dt_match[] = { Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-27 20:07:00 +08:00
static void __init zynq_init_machine(void)
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
{
/*
* 64KB way size, 8-way associativity, parity disabled
*/
zynq: use pl310 device tree bindings The Zynq has a PL310 L2 cache controller. Convert in-tree uses to using the device tree. Signed-off-by: Josh Cartwright <josh.cartwright@ni.com> Cc: John Linn <john.linn@xilinx.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Michal Simek <michal.simek@xilinx.com>
2012-10-24 06:34:22 +08:00
l2x0_of_init(0x02060000, 0xF0F0FFFF);
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
arm: zynq: Use of_platform_populate instead of bus_probe All new boards should be using this function instead of of_platform_bus_probe. Two side effects: 1. Possible to probe node which are not in the bus 2. Remove bus_id table from platform code Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-11-01 00:10:17 +08:00
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
ARM: zynq: cpuidle: convert to platform driver As the ux500 and the kirkwood driver, make the zynq driver a platform driver Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Michal Simek <michal.simek@xilinx.com> Tested-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
2013-09-22 00:41:02 +08:00
platform_device_register(&zynq_cpuidle_device);
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
}
arm: zynq: Get rid of xilinx function prefix Xilinx is vendor name not SoC name. Use zynq instead. Also remove one checkpatch warning: WARNING: static const char * array should probably be static const char * const +static const char *xilinx_dt_match[] = { Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-27 20:07:00 +08:00
static void __init zynq_timer_init(void)
ARM: zynq: move arm-specific sys_timer out of ttc Move the sys_timer definition out of ttc driver and make it part of the common zynq code. This is preparation for renaming and COMMON_CLK support. Signed-off-by: Josh Cartwright <josh.cartwright@ni.com> Tested-by: Michal Simek <michal.simek@xilinx.com>
2012-11-01 01:11:59 +08:00
{
arm: zynq: Move slcr initialization to separate file Create separate slcr driver instead of polluting common code. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-27 19:37:53 +08:00
zynq_slcr_init();
arm: zynq: Move timer to clocksource interface Use clocksource timer initialization. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-20 17:24:59 +08:00
clocksource_of_init();
ARM: zynq: move arm-specific sys_timer out of ttc Move the sys_timer definition out of ttc driver and make it part of the common zynq code. This is preparation for renaming and COMMON_CLK support. Signed-off-by: Josh Cartwright <josh.cartwright@ni.com> Tested-by: Michal Simek <michal.simek@xilinx.com>
2012-11-01 01:11:59 +08:00
}
arm: zynq: Load scu baseaddress at run time Use Cortex a9 cp15 to read scu baseaddress. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-20 18:11:43 +08:00
static struct map_desc zynq_cortex_a9_scu_map __initdata = {
.length = SZ_256,
.type = MT_DEVICE,
};
static void __init zynq_scu_map_io(void)
{
unsigned long base;
base = scu_a9_get_base();
zynq_cortex_a9_scu_map.pfn = __phys_to_pfn(base);
/* Expected address is in vmalloc area that's why simple assign here */
zynq_cortex_a9_scu_map.virtual = base;
iotable_init(&zynq_cortex_a9_scu_map, 1);
zynq_scu_base = (void __iomem *)base;
BUG_ON(!zynq_scu_base);
}
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
/**
arm: zynq: Get rid of xilinx function prefix Xilinx is vendor name not SoC name. Use zynq instead. Also remove one checkpatch warning: WARNING: static const char * array should probably be static const char * const +static const char *xilinx_dt_match[] = { Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-27 20:07:00 +08:00
* zynq_map_io - Create memory mappings needed for early I/O.
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
*/
arm: zynq: Get rid of xilinx function prefix Xilinx is vendor name not SoC name. Use zynq instead. Also remove one checkpatch warning: WARNING: static const char * array should probably be static const char * const +static const char *xilinx_dt_match[] = { Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-27 20:07:00 +08:00
static void __init zynq_map_io(void)
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
{
ARM: zynq: make use of debug_ll_io_init() Convert low-level debugging routines to make use of debug_ll_io_init(). This is part of the preparation for ARCH_MULTIPLATFORM support for Zynq. Signed-off-by: Josh Cartwright <josh.cartwright@ni.com> Tested-by: Michal Simek <michal.simek@xilinx.com>
2012-11-20 00:16:01 +08:00
debug_ll_io_init();
arm: zynq: Load scu baseaddress at run time Use Cortex a9 cp15 to read scu baseaddress. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-20 18:11:43 +08:00
zynq_scu_map_io();
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
}
ARM: Xilinx: merge board file into main platform code The zynq platform will never have board files other than the device tree one, so there is no point splitting it from common.c. This makes the code more compact. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: John Linn <john.linn@xilinx.com>
2011-07-07 19:35:20 +08:00
ARM: zynq: fix compilation warning Fix the following compilation warning: arch/arm/mach-zynq/common.c:110:2: warning: initialization from incompatible pointer type [enabled by default] arch/arm/mach-zynq/common.c:110:2: warning: (near initialization for ‘__mach_desc_XILINX_EP107.restart’) [enabled by default] Signed-off-by: Vincent Stehlé <vincent.stehle@freescale.com> Cc: Robin Holt <holt@sgi.com> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: trivial@kernel.org Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-27 20:42:41 +08:00
static void zynq_system_reset(enum reboot_mode mode, const char *cmd)
arm: zynq: Add support for system reset Do system reset via slcr registers. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-20 18:42:15 +08:00
{
zynq_slcr_system_reset();
}
arm: zynq: Get rid of xilinx function prefix Xilinx is vendor name not SoC name. Use zynq instead. Also remove one checkpatch warning: WARNING: static const char * array should probably be static const char * const +static const char *xilinx_dt_match[] = { Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-27 20:07:00 +08:00
static const char * const zynq_dt_match[] = {
ARM: zynq: dts: split up device tree The purpose of the created zynq-7000.dtsi file is to describe the hardware common to all Zynq 7000-based boards. Also, get rid of the zynq-ep107 device tree, since it is not hardware anyone can purchase. Add a zc702 dts file based on the zynq-7000.dtsi. Add it to the dts/Makefile so it is built with the 'dtbs' target. Signed-off-by: Josh Cartwright <josh.cartwright@ni.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2012-11-01 02:24:48 +08:00
"xlnx,zynq-7000",
ARM: Xilinx: merge board file into main platform code The zynq platform will never have board files other than the device tree one, so there is no point splitting it from common.c. This makes the code more compact. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: John Linn <john.linn@xilinx.com>
2011-07-07 19:35:20 +08:00
NULL
};
ARM: zynq: use DT_MACHINE_START The zynq platform code only supports DT based booting, so we should use DT_MACHINE_START rather than MACHINE_START. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Michal Simek <michal.simek@xilinx.com>
2013-06-13 20:13:37 +08:00
DT_MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
arm: zynq: Add smp support Zynq is dual core Cortex A9 which starts always at zero. Using simple trampoline ensure long jump to secondary_startup code. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
2013-03-20 20:50:12 +08:00
.smp = smp_ops(zynq_smp_ops),
arm: zynq: Get rid of xilinx function prefix Xilinx is vendor name not SoC name. Use zynq instead. Also remove one checkpatch warning: WARNING: static const char * array should probably be static const char * const +static const char *xilinx_dt_match[] = { Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-27 20:07:00 +08:00
.map_io = zynq_map_io,
.init_machine = zynq_init_machine,
.init_time = zynq_timer_init,
.dt_compat = zynq_dt_match,
arm: zynq: Add support for system reset Do system reset via slcr registers. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-03-20 18:42:15 +08:00
.restart = zynq_system_reset,
ARM: Xilinx: merge board file into main platform code The zynq platform will never have board files other than the device tree one, so there is no point splitting it from common.c. This makes the code more compact. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: John Linn <john.linn@xilinx.com>
2011-07-07 19:35:20 +08:00
MACHINE_END