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linux_old1/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: zynq: Add missing irqchip.h to common.c The patch: "ARM: use common irqchip_init for GIC init" (sha1: 0529e315bbda5d502c93df2cfafba9bb337fbdf4) should also add linux/irqchip.h header. Error message: arch/arm/mach-zynq/common.c:99:14: error: 'irqchip_init' undeclared here (not in a function) Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-01-28 20:22:27 +08:00
#include <linux/irqchip.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: 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"
static struct of_device_id zynq_of_bus_ids[] __initdata = {
{ .compatible = "simple-bus", },
{}
};
/**
* xilinx_init_machine() - System specific initialization, intended to be
* called from board specific initialization.
*/
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
static void __init xilinx_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
of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL);
}
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
#define SCU_PERIPH_PHYS 0xF8F00000
#define SCU_PERIPH_SIZE SZ_8K
#define SCU_PERIPH_VIRT (VMALLOC_END - SCU_PERIPH_SIZE)
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
static struct map_desc scu_desc __initdata = {
.virtual = SCU_PERIPH_VIRT,
.pfn = __phys_to_pfn(SCU_PERIPH_PHYS),
.length = SCU_PERIPH_SIZE,
.type = MT_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: 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
static void __init xilinx_zynq_timer_init(void)
{
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
struct device_node *np;
void __iomem *slcr;
np = of_find_compatible_node(NULL, NULL, "xlnx,zynq-slcr");
slcr = of_iomap(np, 0);
WARN_ON(!slcr);
xilinx_zynq_clocks_init(slcr);
arm: zynq: timer: Replace PSS through PS The acronym PSS is deprecated by Xilinx. The correct term, which is also used in Xilinx documentation is PS (processing system). This is just a search and replace: - s/PSS/PS/g - s/pss/ps/g Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Tested-by: Josh Cartwright <josh.cartwright@ni.com>
2012-12-20 02:18:36 +08:00
xttcps_timer_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: 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
/**
* xilinx_map_io() - Create memory mappings needed for early I/O.
*/
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
static void __init xilinx_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();
iotable_init(&scu_desc, 1);
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
static const char *xilinx_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-zc702",
"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
};
MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
.map_io = xilinx_map_io,
ARM: use common irqchip_init for GIC init Convert all GIC DT initialization over to use common irqchip_init function. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: David Brown <davidb@codeaurora.org> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Dinh Nguyen <dinguyen@altera.com> Cc: Viresh Kumar <viresh.linux@gmail.com> Cc: Shiraz Hashim <shiraz.hashim@st.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Linus Walleij <linus.walleij@linaro.org>
2012-11-06 06:18:28 +08:00
.init_irq = irqchip_init,
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
.init_machine = xilinx_init_machine,
ARM: delete struct sys_timer Now that the only field in struct sys_timer is .init, delete the struct, and replace the machine descriptor .timer field with the initialization function itself. This will enable moving timer drivers into drivers/clocksource without having to place a public prototype of each struct sys_timer object into include/linux; the intent is to create a single of_clocksource_init() function that determines which timer driver to initialize by scanning the device dtree, much like the proposed irqchip_init() at: http://www.spinics.net/lists/arm-kernel/msg203686.html Includes mach-omap2 fixes from Igor Grinberg. Tested-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-11-09 03:40:59 +08:00
.init_time = xilinx_zynq_timer_init,
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
.dt_compat = xilinx_dt_match,
MACHINE_END