Metag architecture changes for v3.11
- Infrastructure and DT files for TZ1090 SoC (pin control drivers already merged via pinctrl tree). - Panic on boot instead of just warning if cache aliasing possible. - Various SMP/hotplug fixes. - Various other randconfig/sparse fixes. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (GNU/Linux) iQIcBAABAgAGBQJR1T3SAAoJEKHZs+irPybfOPcP/0HDcQFZ0/2j5jbobz8VumdC +PtEcKQc5vY2p96NGO0xPX86ebPZ7b52E4GWkk1RTEsreIHGeCxAdX/UsDWUqPrs b4ECnB+TOXvMN09UCkP4d1bVb/Fzh9aBp/NUkgp3v24Rb6j3WSoAh9TtRRw4OY0/ ZIbLKvaAlQIKofErYJldQvdk5ymskMQ9dAQg3A/8f6az5+qkISgCckJgzi6kyH3Y An3GH0nK8dgucNPHBoyfzRvCCLuBeUpdZiMK/LPuV1MVuK/4R4m/pjhxE8Eyf6Q/ JSwu3paH8NBNAY/gRXQcbNkxDV2+yv1cn1MUpMD/taYf3Q7BKpR6uzIelkipri7K bbsvPHoI91ZmZzhGCtkT9ZtArGB1OhomNDC1P9vbCe8boN2ajvmJKfmA8VfpioFS urW6e42bchplXXd7BPTEKx5gWJWDz0TNqPoOX1io24Avmp6ljHgJ3/oMlcSYnuiy WfHBydFthZDp869mpG8qrlRwa4lRgc04EjYEgXpIW1ov5ix5HkTpwJFkZ+p8keZK PNA/jk/C1Y0yMEHJ7uueqjxxW6Ji4SdeaPLcpgIw2GRHptJxFcvK/GPLR3Z+peze Vrx22Ld3/bXrRPlTPKQb3ZVQCh+LToX3xbFXFra5SDeId/M7v4TDNBnOoZKbNxoJ J+sf+lrHxmH9lxqHLyiY =nmbJ -----END PGP SIGNATURE----- Merge tag 'metag-for-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag Pull Metag architecture changes from James Hogan: - Infrastructure and DT files for TZ1090 SoC (pin control drivers already merged via pinctrl tree). - Panic on boot instead of just warning if cache aliasing possible. - Various SMP/hotplug fixes. - Various other randconfig/sparse fixes. * tag 'metag-for-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag: (24 commits) metag: move EXPORT_SYMBOL(csum_partial) to metag_ksyms.c metag: cpu hotplug: route_irq: preserve irq mask metag: kick: add missing irq_enter/exit to kick_handler() metag: smp: don't spin waiting for CPU to start metag: smp: enable irqs after set_cpu_online metag: use clear_tasks_mm_cpumask() metag: tz1090: select and instantiate pinctrl-tz1090-pdc metag: tz1090: select and instantiate pinctrl-tz1090 metag: don't check for cache aliasing on smp cpu boot metag: panic if cache aliasing possible metag: *.dts: include using preprocessor metag: add <dt-bindings/> symlink metag/.gitignore: Extend the *.dtb pattern to match the dtb.S files metag/traps: include setup.h for the per_cpu_trap_init declaration metag/traps: Mark die() as __noreturn to match the declaration. metag/processor.h: Add missing cpuinfo_op declaration. metag/setup: Restrict scope for the capabilities variable metag/mm/cache: Restrict scope for metag_lnkget_probe metag/asm/irq.h: Declare init_IRQ metag/kernel/irq.c: Declare root_domain as static ...
This commit is contained in:
Linus Torvalds
commit
7644a448cc
|
|
@ -0,0 +1,30 @@
|
|||
* Meta Processor Binding
|
||||
|
||||
This binding specifies what properties must be available in the device tree
|
||||
representation of a Meta Processor Core, which is the root node in the tree.
|
||||
|
||||
Required properties:
|
||||
|
||||
- compatible: Specifies the compatibility list for the Meta processor.
|
||||
The type shall be <string> and the value shall include "img,meta".
|
||||
|
||||
Optional properties:
|
||||
|
||||
- clocks: Clock consumer specifiers as described in
|
||||
Documentation/devicetree/bindings/clock/clock-bindings.txt
|
||||
|
||||
- clock-names: Clock consumer names as described in
|
||||
Documentation/devicetree/bindings/clock/clock-bindings.txt.
|
||||
|
||||
Clocks are identified by name. Valid clocks are:
|
||||
|
||||
- "core": The Meta core clock from which the Meta timers are derived.
|
||||
|
||||
* Examples
|
||||
|
||||
/ {
|
||||
compatible = "toumaz,tz1090", "img,meta";
|
||||
|
||||
clocks = <&meta_core_clk>;
|
||||
clock-names = "core";
|
||||
};
|
||||
|
|
@ -58,6 +58,7 @@ snps Synopsys, Inc.
|
|||
st STMicroelectronics
|
||||
ste ST-Ericsson
|
||||
stericsson ST-Ericsson
|
||||
toumaz Toumaz
|
||||
ti Texas Instruments
|
||||
toshiba Toshiba Corporation
|
||||
v3 V3 Semiconductor
|
||||
|
|
|
|||
|
|
@ -14,6 +14,18 @@ config META21_FPGA
|
|||
help
|
||||
This is a Meta 2.1 FPGA bitstream, just a bare CPU.
|
||||
|
||||
config SOC_TZ1090
|
||||
bool "Toumaz Xenif TZ1090 SoC (Comet)"
|
||||
select METAG_LNKGET_AROUND_CACHE
|
||||
select METAG_META21
|
||||
select METAG_SMP_WRITE_REORDERING
|
||||
select PINCTRL
|
||||
select PINCTRL_TZ1090
|
||||
select PINCTRL_TZ1090_PDC
|
||||
help
|
||||
This is a Toumaz Technology Xenif TZ1090 (A.K.A. Comet) SoC containing
|
||||
a 2-threaded HTP.
|
||||
|
||||
endchoice
|
||||
|
||||
menu "SoC configuration"
|
||||
|
|
|
|||
|
|
@ -20,7 +20,7 @@ checkflags-$(CONFIG_METAG_META12) += -DMETAC_1_2
|
|||
checkflags-$(CONFIG_METAG_META21) += -DMETAC_2_1
|
||||
CHECKFLAGS += -D__metag__ $(checkflags-y)
|
||||
|
||||
KBUILD_DEFCONFIG := meta2_defconfig
|
||||
KBUILD_DEFCONFIG := tz1090_defconfig
|
||||
|
||||
sflags-$(CONFIG_METAG_META12) += -mmetac=1.2
|
||||
ifeq ($(CONFIG_METAG_META12),y)
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
vmlinux*
|
||||
uImage*
|
||||
ramdisk.*
|
||||
*.dtb
|
||||
*.dtb*
|
||||
|
|
|
|||
|
|
@ -1,7 +1,9 @@
|
|||
dtb-y += skeleton.dtb
|
||||
dtb-y += tz1090_generic.dtb
|
||||
|
||||
# Built-in dtb
|
||||
builtindtb-y := skeleton
|
||||
builtindtb-$(CONFIG_SOC_TZ1090) := tz1090_generic
|
||||
|
||||
ifneq ($(CONFIG_METAG_BUILTIN_DTB_NAME),"")
|
||||
builtindtb-y := $(patsubst "%",%,$(CONFIG_METAG_BUILTIN_DTB_NAME))
|
||||
|
|
|
|||
|
|
@ -0,0 +1 @@
|
|||
../../../../../include/dt-bindings
|
||||
|
|
@ -7,4 +7,4 @@
|
|||
*/
|
||||
/dts-v1/;
|
||||
|
||||
/include/ "skeleton.dtsi"
|
||||
#include "skeleton.dtsi"
|
||||
|
|
|
|||
|
|
@ -0,0 +1,41 @@
|
|||
/*
|
||||
* Copyright (C) 2012 Imagination Technologies Ltd.
|
||||
*
|
||||
* This program 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.
|
||||
*/
|
||||
|
||||
#include "skeleton.dtsi"
|
||||
|
||||
/ {
|
||||
compatible = "toumaz,tz1090", "img,meta";
|
||||
|
||||
interrupt-parent = <&intc>;
|
||||
|
||||
intc: interrupt-controller {
|
||||
compatible = "img,meta-intc";
|
||||
interrupt-controller;
|
||||
#interrupt-cells = <2>;
|
||||
num-banks = <2>;
|
||||
};
|
||||
|
||||
soc {
|
||||
compatible = "simple-bus";
|
||||
#address-cells = <1>;
|
||||
#size-cells = <1>;
|
||||
ranges;
|
||||
|
||||
pinctrl: pinctrl@02005800 {
|
||||
#gpio-range-cells = <3>;
|
||||
compatible = "img,tz1090-pinctrl";
|
||||
reg = <0x02005800 0xe4>;
|
||||
};
|
||||
|
||||
pdc_pinctrl: pinctrl@02006500 {
|
||||
#gpio-range-cells = <3>;
|
||||
compatible = "img,tz1090-pdc-pinctrl";
|
||||
reg = <0x02006500 0x100>;
|
||||
};
|
||||
};
|
||||
};
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
/*
|
||||
* Copyright (C) 2012 Imagination Technologies Ltd.
|
||||
*
|
||||
* This program 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.
|
||||
*/
|
||||
/dts-v1/;
|
||||
|
||||
#include "tz1090.dtsi"
|
||||
|
|
@ -0,0 +1,42 @@
|
|||
# CONFIG_LOCALVERSION_AUTO is not set
|
||||
# CONFIG_SWAP is not set
|
||||
CONFIG_SYSVIPC=y
|
||||
CONFIG_SYSFS_DEPRECATED=y
|
||||
CONFIG_SYSFS_DEPRECATED_V2=y
|
||||
CONFIG_KALLSYMS_ALL=y
|
||||
# CONFIG_ELF_CORE is not set
|
||||
CONFIG_SLAB=y
|
||||
# CONFIG_BLK_DEV_BSG is not set
|
||||
CONFIG_PARTITION_ADVANCED=y
|
||||
# CONFIG_MSDOS_PARTITION is not set
|
||||
# CONFIG_IOSCHED_DEADLINE is not set
|
||||
# CONFIG_IOSCHED_CFQ is not set
|
||||
CONFIG_FLATMEM_MANUAL=y
|
||||
CONFIG_SOC_TZ1090=y
|
||||
CONFIG_METAG_HALT_ON_PANIC=y
|
||||
# CONFIG_METAG_FPU is not set
|
||||
CONFIG_METAG_DA=y
|
||||
CONFIG_HZ_100=y
|
||||
CONFIG_DEVTMPFS=y
|
||||
# CONFIG_STANDALONE is not set
|
||||
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
|
||||
# CONFIG_FW_LOADER is not set
|
||||
CONFIG_BLK_DEV_RAM=y
|
||||
CONFIG_BLK_DEV_RAM_COUNT=1
|
||||
CONFIG_BLK_DEV_RAM_SIZE=16384
|
||||
# CONFIG_INPUT is not set
|
||||
# CONFIG_SERIO is not set
|
||||
# CONFIG_VT is not set
|
||||
# CONFIG_LEGACY_PTYS is not set
|
||||
CONFIG_DA_TTY=y
|
||||
CONFIG_DA_CONSOLE=y
|
||||
# CONFIG_DEVKMEM is not set
|
||||
# CONFIG_HW_RANDOM is not set
|
||||
CONFIG_GPIOLIB=y
|
||||
# CONFIG_HWMON is not set
|
||||
# CONFIG_USB_SUPPORT is not set
|
||||
# CONFIG_DNOTIFY is not set
|
||||
CONFIG_TMPFS=y
|
||||
# CONFIG_MISC_FILESYSTEMS is not set
|
||||
# CONFIG_SCHED_DEBUG is not set
|
||||
CONFIG_DEBUG_INFO=y
|
||||
|
|
@ -6,7 +6,7 @@
|
|||
struct pt_regs;
|
||||
|
||||
extern const char *trap_name(int trapno);
|
||||
extern void die(const char *str, struct pt_regs *regs, long err,
|
||||
unsigned long addr) __attribute__ ((noreturn));
|
||||
extern void __noreturn die(const char *str, struct pt_regs *regs, long err,
|
||||
unsigned long addr);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -19,6 +19,8 @@
|
|||
* core frequency will be determined like this:
|
||||
* Meta 1: based on loops_per_jiffy.
|
||||
* Meta 2: (EXPAND_TIMER_DIV + 1) MHz.
|
||||
* If a "core" clock is provided by the device tree, it
|
||||
* will override this function.
|
||||
*/
|
||||
struct meta_clock_desc {
|
||||
unsigned long (*get_core_freq)(void);
|
||||
|
|
@ -26,6 +28,12 @@ struct meta_clock_desc {
|
|||
|
||||
extern struct meta_clock_desc _meta_clock;
|
||||
|
||||
/*
|
||||
* Perform platform clock initialisation, reading clocks from device tree etc.
|
||||
* Only accessible during boot.
|
||||
*/
|
||||
void init_metag_clocks(void);
|
||||
|
||||
/*
|
||||
* Set up the default clock, ensuring all callbacks are valid - only accessible
|
||||
* during boot.
|
||||
|
|
|
|||
|
|
@ -17,6 +17,7 @@ struct pt_regs;
|
|||
|
||||
int tbisig_map(unsigned int hw);
|
||||
extern void do_IRQ(int irq, struct pt_regs *regs);
|
||||
extern void init_IRQ(void);
|
||||
|
||||
#ifdef CONFIG_METAG_SUSPEND_MEM
|
||||
int traps_save_context(void);
|
||||
|
|
|
|||
|
|
@ -199,4 +199,6 @@ extern void (*soc_halt)(void);
|
|||
extern void show_trace(struct task_struct *tsk, unsigned long *sp,
|
||||
struct pt_regs *regs);
|
||||
|
||||
extern const struct seq_operations cpuinfo_op;
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -100,22 +100,23 @@ void check_for_cache_aliasing(int thread_id)
|
|||
thread_cache_size =
|
||||
get_thread_cache_size(cache_type, thread_id);
|
||||
if (thread_cache_size < 0)
|
||||
pr_emerg("Can't read %s cache size", \
|
||||
pr_emerg("Can't read %s cache size\n",
|
||||
cache_type ? "DCACHE" : "ICACHE");
|
||||
else if (thread_cache_size == 0)
|
||||
/* Cache is off. No need to check for aliasing */
|
||||
continue;
|
||||
if (thread_cache_size / CACHE_ASSOCIATIVITY > PAGE_SIZE) {
|
||||
pr_emerg("Cache aliasing detected in %s on Thread %d",
|
||||
pr_emerg("Potential cache aliasing detected in %s on Thread %d\n",
|
||||
cache_type ? "DCACHE" : "ICACHE", thread_id);
|
||||
pr_warn("Total %s size: %u bytes",
|
||||
cache_type ? "DCACHE" : "ICACHE ",
|
||||
pr_warn("Total %s size: %u bytes\n",
|
||||
cache_type ? "DCACHE" : "ICACHE",
|
||||
cache_type ? get_dcache_size()
|
||||
: get_icache_size());
|
||||
pr_warn("Thread %s size: %d bytes",
|
||||
pr_warn("Thread %s size: %d bytes\n",
|
||||
cache_type ? "CACHE" : "ICACHE",
|
||||
thread_cache_size);
|
||||
pr_warn("Page Size: %lu bytes", PAGE_SIZE);
|
||||
pr_warn("Page Size: %lu bytes\n", PAGE_SIZE);
|
||||
panic("Potential cache aliasing detected");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -8,8 +8,10 @@
|
|||
* published by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
#include <linux/clk.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/of.h>
|
||||
|
||||
#include <asm/param.h>
|
||||
#include <asm/clock.h>
|
||||
|
|
@ -34,8 +36,63 @@ static unsigned long get_core_freq_default(void)
|
|||
#endif
|
||||
}
|
||||
|
||||
static struct clk *clk_core;
|
||||
|
||||
/* Clk based get_core_freq callback. */
|
||||
static unsigned long get_core_freq_clk(void)
|
||||
{
|
||||
return clk_get_rate(clk_core);
|
||||
}
|
||||
|
||||
/**
|
||||
* setup_meta_clocks() - Set up the Meta clock.
|
||||
* init_metag_core_clock() - Set up core clock from devicetree.
|
||||
*
|
||||
* Checks to see if a "core" clock is provided in the device tree, and overrides
|
||||
* the get_core_freq callback to use it.
|
||||
*/
|
||||
static void __init init_metag_core_clock(void)
|
||||
{
|
||||
/*
|
||||
* See if a core clock is provided by the devicetree (and
|
||||
* registered by the init callback above).
|
||||
*/
|
||||
struct device_node *node;
|
||||
node = of_find_compatible_node(NULL, NULL, "img,meta");
|
||||
if (!node) {
|
||||
pr_warn("%s: no compatible img,meta DT node found\n",
|
||||
__func__);
|
||||
return;
|
||||
}
|
||||
|
||||
clk_core = of_clk_get_by_name(node, "core");
|
||||
if (IS_ERR(clk_core)) {
|
||||
pr_warn("%s: no core clock found in DT\n",
|
||||
__func__);
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* Override the core frequency callback to use
|
||||
* this clk.
|
||||
*/
|
||||
_meta_clock.get_core_freq = get_core_freq_clk;
|
||||
}
|
||||
|
||||
/**
|
||||
* init_metag_clocks() - Set up clocks from devicetree.
|
||||
*
|
||||
* Set up important clocks from device tree. In particular any needed for clock
|
||||
* sources.
|
||||
*/
|
||||
void __init init_metag_clocks(void)
|
||||
{
|
||||
init_metag_core_clock();
|
||||
|
||||
pr_info("Core clock frequency: %lu Hz\n", get_coreclock());
|
||||
}
|
||||
|
||||
/**
|
||||
* setup_meta_clocks() - Early set up of the Meta clock.
|
||||
* @desc: Clock descriptor usually provided by machine description
|
||||
*
|
||||
* Ensures all callbacks are valid.
|
||||
|
|
|
|||
|
|
@ -25,7 +25,7 @@ static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly;
|
|||
static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
|
||||
#endif
|
||||
|
||||
struct irq_domain *root_domain;
|
||||
static struct irq_domain *root_domain;
|
||||
|
||||
static unsigned int startup_meta_irq(struct irq_data *data)
|
||||
{
|
||||
|
|
@ -279,11 +279,12 @@ static void route_irq(struct irq_data *data, unsigned int irq, unsigned int cpu)
|
|||
{
|
||||
struct irq_desc *desc = irq_to_desc(irq);
|
||||
struct irq_chip *chip = irq_data_get_irq_chip(data);
|
||||
unsigned long flags;
|
||||
|
||||
raw_spin_lock_irq(&desc->lock);
|
||||
raw_spin_lock_irqsave(&desc->lock, flags);
|
||||
if (chip->irq_set_affinity)
|
||||
chip->irq_set_affinity(data, cpumask_of(cpu), false);
|
||||
raw_spin_unlock_irq(&desc->lock);
|
||||
raw_spin_unlock_irqrestore(&desc->lock, flags);
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -26,6 +26,8 @@
|
|||
* pass it as an argument.
|
||||
*/
|
||||
#include <linux/export.h>
|
||||
#include <linux/hardirq.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/types.h>
|
||||
|
|
@ -66,6 +68,7 @@ EXPORT_SYMBOL(kick_unregister_func);
|
|||
TBIRES
|
||||
kick_handler(TBIRES State, int SigNum, int Triggers, int Inst, PTBI pTBI)
|
||||
{
|
||||
struct pt_regs *old_regs;
|
||||
struct kick_irq_handler *kh;
|
||||
struct list_head *lh;
|
||||
int handled = 0;
|
||||
|
|
@ -79,6 +82,9 @@ kick_handler(TBIRES State, int SigNum, int Triggers, int Inst, PTBI pTBI)
|
|||
|
||||
trace_hardirqs_off();
|
||||
|
||||
old_regs = set_irq_regs((struct pt_regs *)State.Sig.pCtx);
|
||||
irq_enter();
|
||||
|
||||
/*
|
||||
* There is no need to disable interrupts here because we
|
||||
* can't nest KICK interrupts in a KICK interrupt handler.
|
||||
|
|
@ -97,5 +103,8 @@ kick_handler(TBIRES State, int SigNum, int Triggers, int Inst, PTBI pTBI)
|
|||
|
||||
WARN_ON(!handled);
|
||||
|
||||
irq_exit();
|
||||
set_irq_regs(old_regs);
|
||||
|
||||
return tail_end(ret);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,5 +1,7 @@
|
|||
#include <linux/export.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
#include <asm/checksum.h>
|
||||
#include <asm/div64.h>
|
||||
#include <asm/ftrace.h>
|
||||
#include <asm/page.h>
|
||||
|
|
@ -15,6 +17,9 @@ EXPORT_SYMBOL(max_pfn);
|
|||
EXPORT_SYMBOL(min_low_pfn);
|
||||
#endif
|
||||
|
||||
/* Network checksum functions */
|
||||
EXPORT_SYMBOL(csum_partial);
|
||||
|
||||
/* TBI symbols */
|
||||
EXPORT_SYMBOL(__TBI);
|
||||
EXPORT_SYMBOL(__TBIFindSeg);
|
||||
|
|
|
|||
|
|
@ -20,6 +20,7 @@
|
|||
#include <linux/memblock.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/of_fdt.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/pfn.h>
|
||||
#include <linux/root_dev.h>
|
||||
#include <linux/sched.h>
|
||||
|
|
@ -424,6 +425,9 @@ static int __init customize_machine(void)
|
|||
/* customizes platform devices, or adds new ones */
|
||||
if (machine_desc->init_machine)
|
||||
machine_desc->init_machine();
|
||||
else
|
||||
of_platform_populate(NULL, of_default_bus_match_table, NULL,
|
||||
NULL);
|
||||
return 0;
|
||||
}
|
||||
arch_initcall(customize_machine);
|
||||
|
|
@ -587,20 +591,20 @@ PTBI pTBI_get(unsigned int cpu)
|
|||
EXPORT_SYMBOL(pTBI_get);
|
||||
|
||||
#if defined(CONFIG_METAG_DSP) && defined(CONFIG_METAG_FPU)
|
||||
char capabilites[] = "dsp fpu";
|
||||
static char capabilities[] = "dsp fpu";
|
||||
#elif defined(CONFIG_METAG_DSP)
|
||||
char capabilites[] = "dsp";
|
||||
static char capabilities[] = "dsp";
|
||||
#elif defined(CONFIG_METAG_FPU)
|
||||
char capabilites[] = "fpu";
|
||||
static char capabilities[] = "fpu";
|
||||
#else
|
||||
char capabilites[] = "";
|
||||
static char capabilities[] = "";
|
||||
#endif
|
||||
|
||||
static struct ctl_table caps_kern_table[] = {
|
||||
{
|
||||
.procname = "capabilities",
|
||||
.data = capabilites,
|
||||
.maxlen = sizeof(capabilites),
|
||||
.data = capabilities,
|
||||
.maxlen = sizeof(capabilities),
|
||||
.mode = 0444,
|
||||
.proc_handler = proc_dostring,
|
||||
},
|
||||
|
|
|
|||
|
|
@ -8,6 +8,7 @@
|
|||
* published by the Free Software Foundation.
|
||||
*/
|
||||
#include <linux/atomic.h>
|
||||
#include <linux/completion.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/spinlock.h>
|
||||
|
|
@ -62,6 +63,8 @@ static DEFINE_PER_CPU(struct ipi_data, ipi_data) = {
|
|||
|
||||
static DEFINE_SPINLOCK(boot_lock);
|
||||
|
||||
static DECLARE_COMPLETION(cpu_running);
|
||||
|
||||
/*
|
||||
* "thread" is assumed to be a valid Meta hardware thread ID.
|
||||
*/
|
||||
|
|
@ -235,20 +238,12 @@ int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle)
|
|||
*/
|
||||
ret = boot_secondary(thread, idle);
|
||||
if (ret == 0) {
|
||||
unsigned long timeout;
|
||||
|
||||
/*
|
||||
* CPU was successfully started, wait for it
|
||||
* to come online or time out.
|
||||
*/
|
||||
timeout = jiffies + HZ;
|
||||
while (time_before(jiffies, timeout)) {
|
||||
if (cpu_online(cpu))
|
||||
break;
|
||||
|
||||
udelay(10);
|
||||
barrier();
|
||||
}
|
||||
wait_for_completion_timeout(&cpu_running,
|
||||
msecs_to_jiffies(1000));
|
||||
|
||||
if (!cpu_online(cpu))
|
||||
ret = -EIO;
|
||||
|
|
@ -276,7 +271,6 @@ static DECLARE_COMPLETION(cpu_killed);
|
|||
int __cpuexit __cpu_disable(void)
|
||||
{
|
||||
unsigned int cpu = smp_processor_id();
|
||||
struct task_struct *p;
|
||||
|
||||
/*
|
||||
* Take this CPU offline. Once we clear this, we can't return,
|
||||
|
|
@ -296,12 +290,7 @@ int __cpuexit __cpu_disable(void)
|
|||
flush_cache_all();
|
||||
local_flush_tlb_all();
|
||||
|
||||
read_lock(&tasklist_lock);
|
||||
for_each_process(p) {
|
||||
if (p->mm)
|
||||
cpumask_clear_cpu(cpu, mm_cpumask(p->mm));
|
||||
}
|
||||
read_unlock(&tasklist_lock);
|
||||
clear_tasks_mm_cpumask(cpu);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -385,12 +374,7 @@ asmlinkage void secondary_start_kernel(void)
|
|||
|
||||
setup_priv();
|
||||
|
||||
/*
|
||||
* Enable local interrupts.
|
||||
*/
|
||||
tbi_startup_interrupt(TBID_SIGNUM_TRT);
|
||||
notify_cpu_starting(cpu);
|
||||
local_irq_enable();
|
||||
|
||||
pr_info("CPU%u (thread %u): Booted secondary processor\n",
|
||||
cpu, cpu_2_hwthread_id[cpu]);
|
||||
|
|
@ -402,12 +386,13 @@ asmlinkage void secondary_start_kernel(void)
|
|||
* OK, now it's safe to let the boot CPU continue
|
||||
*/
|
||||
set_cpu_online(cpu, true);
|
||||
complete(&cpu_running);
|
||||
|
||||
/*
|
||||
* Check for cache aliasing.
|
||||
* Preemption is disabled
|
||||
* Enable local interrupts.
|
||||
*/
|
||||
check_for_cache_aliasing(cpu);
|
||||
tbi_startup_interrupt(TBID_SIGNUM_TRT);
|
||||
local_irq_enable();
|
||||
|
||||
/*
|
||||
* OK, it's off to the idle thread for us
|
||||
|
|
|
|||
|
|
@ -5,11 +5,21 @@
|
|||
*
|
||||
*/
|
||||
|
||||
#include <linux/init.h>
|
||||
|
||||
#include <clocksource/metag_generic.h>
|
||||
#include <linux/clk-provider.h>
|
||||
#include <linux/init.h>
|
||||
#include <asm/clock.h>
|
||||
|
||||
void __init time_init(void)
|
||||
{
|
||||
#ifdef CONFIG_COMMON_CLK
|
||||
/* Init clocks from device tree */
|
||||
of_clk_init(NULL);
|
||||
#endif
|
||||
|
||||
/* Init meta clocks, particularly the core clock */
|
||||
init_metag_clocks();
|
||||
|
||||
/* Set up the timer clock sources */
|
||||
metag_generic_timer_init();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -33,6 +33,7 @@
|
|||
#include <asm/siginfo.h>
|
||||
#include <asm/traps.h>
|
||||
#include <asm/hwthread.h>
|
||||
#include <asm/setup.h>
|
||||
#include <asm/switch.h>
|
||||
#include <asm/user_gateway.h>
|
||||
#include <asm/syscall.h>
|
||||
|
|
@ -87,8 +88,8 @@ const char *trap_name(int trapno)
|
|||
|
||||
static DEFINE_SPINLOCK(die_lock);
|
||||
|
||||
void die(const char *str, struct pt_regs *regs, long err,
|
||||
unsigned long addr)
|
||||
void __noreturn die(const char *str, struct pt_regs *regs,
|
||||
long err, unsigned long addr)
|
||||
{
|
||||
static int die_counter;
|
||||
|
||||
|
|
|
|||
|
|
@ -124,7 +124,6 @@ __wsum csum_partial(const void *buff, int len, __wsum wsum)
|
|||
result += 1;
|
||||
return (__force __wsum)result;
|
||||
}
|
||||
EXPORT_SYMBOL(csum_partial);
|
||||
|
||||
/*
|
||||
* this routine is used for miscellaneous IP-like checksums, mainly
|
||||
|
|
|
|||
|
|
@ -45,7 +45,7 @@ static volatile u32 lnkget_testdata[16] __initdata __aligned(64);
|
|||
|
||||
#define LNKGET_CONSTANT 0xdeadbeef
|
||||
|
||||
void __init metag_lnkget_probe(void)
|
||||
static void __init metag_lnkget_probe(void)
|
||||
{
|
||||
int temp;
|
||||
long flags;
|
||||
|
|
|
|||
|
|
@ -184,6 +184,8 @@ int __init metag_generic_timer_init(void)
|
|||
#ifdef CONFIG_METAG_META21
|
||||
hwtimer_freq = get_coreclock() / (metag_in32(EXPAND_TIMER_DIV) + 1);
|
||||
#endif
|
||||
pr_info("Timer frequency: %u Hz\n", hwtimer_freq);
|
||||
|
||||
clocksource_register_hz(&clocksource_metag, hwtimer_freq);
|
||||
|
||||
setup_irq(tbisig_map(TBID_SIGNUM_TRT), &metag_timer_irq);
|
||||
|
|
|
|||
Loading…
Reference in New Issue