--- /dev/null
+Axis Communications AB
+ARTPEC series SoC Device Tree Bindings
+
+
+CRISv32 based SoCs are ETRAX FS and ARTPEC-3:
+
+ - compatible = "axis,crisv32";
+
+
--- /dev/null
+Boards based on the CRIS SoCs:
+
+Required root node properties:
+ - compatible = should be one or more of the following:
+ - "axis,dev88" - for Axis devboard 88 with ETRAX FS
+
+Optional:
+
--- /dev/null
+* CRISv32 Interrupt Controller
+
+Interrupt controller for the CRISv32 SoCs.
+
+Main node required properties:
+
+- compatible : should be:
+ "axis,crisv32-intc"
+- interrupt-controller : Identifies the node as an interrupt controller
+- #interrupt-cells : Specifies the number of cells needed to encode an
+ interrupt source. The type shall be a <u32> and the value shall be 1.
+- reg: physical base address and size of the intc registers map.
+
+Example:
+
+ intc: interrupt-controller {
+ compatible = "axis,crisv32-intc";
+ reg = <0xb001c000 0x1000>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+
+
select ARCH_WANT_IPC_PARSE_VERSION
select GENERIC_IRQ_SHOW
select GENERIC_IOMAP
- select GENERIC_SMP_IDLE_THREAD if ETRAX_ARCH_V32
select GENERIC_CMOS_UPDATE
select MODULES_USE_ELF_RELA
select CLONE_BACKWARDS2
select OLD_SIGSUSPEND
select OLD_SIGACTION
+ select ARCH_REQUIRE_GPIOLIB
+ select IRQ_DOMAIN if ETRAX_ARCH_V32
+ select OF if ETRAX_ARCH_V32
+ select OF_EARLY_FLATTREE if ETRAX_ARCH_V32
+ select CLKSRC_MMIO if ETRAX_ARCH_V32
+ select GENERIC_CLOCKEVENTS if ETRAX_ARCH_V32
+ select GENERIC_SCHED_CLOCK if ETRAX_ARCH_V32
config HZ
int
int
default "1"
+config BUILTIN_DTB
+ string "DTB to build into the kernel image"
+ depends on OF
+
source "init/Kconfig"
source "kernel/Kconfig.freezer"
MACH :=
endif
+ifneq ($(CONFIG_BUILTIN_DTB),"")
+core-$(CONFIG_OF) += arch/cris/boot/dts/
+endif
+
LD = $(CROSS_COMPILE)ld -mcrislinux
OBJCOPYFLAGS := -O binary -R .note -R .comment -S
process.o ptrace.o setup.o signal.o traps.o time.o \
cache.o cacheflush.o
-obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_ETRAX_KGDB) += kgdb.o kgdb_asm.o
obj-$(CONFIG_ETRAX_FAST_TIMER) += fasttimer.o
obj-$(CONFIG_MODULES) += crisksyms.o
.type ret_from_intr,@function
ret_from_intr:
+ moveq 0, $r9 ; not a syscall
+
;; Check for resched if preemptive kernel, or if we're going back to
;; user-mode. This test matches the user_regs(regs) macro. Don't simply
;; test CCS since that doesn't necessarily reflect what mode we'll
;; Stack-frame similar to the irq heads, which is reversed in
;; ret_from_sys_call.
- sub.d 92, $sp ; Skip EXS and EDA.
+ sub.d 92, $sp ; Skip EDA.
movem $r13, [$sp]
move.d $sp, $r8
addq 14*4, $r8
move $ccs, $r4
move $srp, $r5
move $erp, $r6
+ move.d $r9, $r7 ; Store syscall number in EXS
subq 4, $sp
- movem $r6, [$r8]
+ movem $r7, [$r8]
ei ; Enable interrupts while processing syscalls.
move.d $r10, [$sp]
.type _work_pending,@function
_work_pending:
- addoq +TI_flags, $r0, $acr
- move.d [$acr], $r10
- btstq TIF_NEED_RESCHED, $r10 ; Need resched?
- bpl _work_notifysig ; No, must be signal/notify.
- nop
- .size _work_pending, . - _work_pending
-
- .type _work_resched,@function
-_work_resched:
- move.d $r9, $r1 ; Preserve R9.
- jsr schedule
- nop
- move.d $r1, $r9
- di
-
- addoq +TI_flags, $r0, $acr
- move.d [$acr], $r1
- and.d _TIF_WORK_MASK, $r1 ; Ignore sycall trace counter.
- beq _Rexit
- nop
- btstq TIF_NEED_RESCHED, $r1
- bmi _work_resched ; current->work.need_resched.
- nop
- .size _work_resched, . - _work_resched
-
- .type _work_notifysig,@function
-_work_notifysig:
- ;; Deal with pending signals and notify-resume requests.
-
addoq +TI_flags, $r0, $acr
move.d [$acr], $r12 ; The thread_info_flags parameter.
move.d $sp, $r11 ; The regs param.
- jsr do_notify_resume
- move.d $r9, $r10 ; do_notify_resume syscall/irq param.
+ jsr do_work_pending
+ move.d $r9, $r10 ; The syscall/irq param.
ba _Rexit
nop
- .size _work_notifysig, . - _work_notifysig
+ .size _work_pending, . - _work_pending
;; We get here as a sidetrack when we've entered a syscall with the
;; trace-bit set. We need to call do_syscall_trace and then continue
GIO_INIT
-#ifdef CONFIG_SMP
-secondary_cpu_entry: /* Entry point for secondary CPUs */
- di
-#endif
-
;; Setup and enable the MMU. Use same configuration for both the data
;; and the instruction MMU.
;;
nop
nop
-#ifdef CONFIG_SMP
- ;; Read CPU ID
- move 0, $srs
- nop
- nop
- nop
- move $s12, $r0
- cmpq 0, $r0
- beq master_cpu
- nop
-slave_cpu:
- ; Time to boot-up. Get stack location provided by master CPU.
- move.d smp_init_current_idle_thread, $r1
- move.d [$r1], $sp
- add.d 8192, $sp
- move.d ebp_start, $r0 ; Defined in linker-script.
- move $r0, $ebp
- jsr smp_callin
- nop
-master_cpu:
- /* Set up entry point for secondary CPUs. The boot ROM has set up
- * EBP at start of internal memory. The CPU will get there
- * later when we issue an IPI to them... */
- move.d MEM_INTMEM_START + IPI_INTR_VECT * 4, $r0
- move.d secondary_cpu_entry, $r1
- move.d $r1, [$r0]
-#endif
; Check if starting from DRAM (network->RAM boot or unpacked
; compressed kernel), or directly from flash.
lapcq ., $r0
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/profile.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/threads.h>
static unsigned long irq_regs[NR_CPUS] =
{
regi_irq,
-#ifdef CONFIG_SMP
- regi_irq2,
-#endif
};
#if NR_REAL_IRQS > 32
irq_exit();
}
+static int crisv32_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw_irq_num)
+{
+ irq_set_chip_and_handler(virq, &crisv32_irq_type, handle_simple_irq);
+
+ return 0;
+}
+
+static struct irq_domain_ops crisv32_irq_ops = {
+ .map = crisv32_irq_map,
+ .xlate = irq_domain_xlate_onecell,
+};
+
/*
* This is called by start_kernel. It fixes the IRQ masks and setup the
* interrupt vector table to point to bad_interrupt pointers.
int i;
int j;
reg_intr_vect_rw_mask vect_mask = {0};
+ struct device_node *np;
+ struct irq_domain *domain;
/* Clear all interrupts masks. */
for (i = 0; i < NBR_REGS; i++)
for (i = 0; i < 256; i++)
etrax_irv->v[i] = weird_irq;
- /* Point all IRQ's to bad handlers. */
+ np = of_find_compatible_node(NULL, NULL, "axis,crisv32-intc");
+ domain = irq_domain_add_legacy(np, NR_IRQS - FIRST_IRQ,
+ FIRST_IRQ, FIRST_IRQ,
+ &crisv32_irq_ops, NULL);
+ BUG_ON(!domain);
+ irq_set_default_host(domain);
+ of_node_put(np);
+
for (i = FIRST_IRQ, j = 0; j < NR_IRQS; i++, j++) {
- irq_set_chip_and_handler(j, &crisv32_irq_type,
- handle_simple_irq);
set_exception_vector(i, interrupt[j]);
}
info = &cpinfo[ARRAY_SIZE(cpinfo) - 1];
-#ifdef CONFIG_SMP
- if (!cpu_online(cpu))
- return 0;
-#endif
-
revision = rdvr();
for (i = 0; i < ARRAY_SIZE(cpinfo); i++) {
/* Make that the user-mode flag is set. */
regs->ccs |= (1 << (U_CCS_BITNR + CCS_SHIFT));
+ /* Don't perform syscall restarting */
+ regs->exs = -1;
+
/* Restore the old USP. */
err |= __get_user(old_usp, &sc->usp);
wrusp(old_usp);
{
struct ksignal ksig;
+ canrestart = canrestart && ((int)regs->exs >= 0);
+
/*
* The common case should go fast, which is why this point is
* reached from kernel-mode. If that's the case, just return
+++ /dev/null
-#include <linux/types.h>
-#include <asm/delay.h>
-#include <irq.h>
-#include <hwregs/intr_vect.h>
-#include <hwregs/intr_vect_defs.h>
-#include <asm/tlbflush.h>
-#include <asm/mmu_context.h>
-#include <hwregs/asm/mmu_defs_asm.h>
-#include <hwregs/supp_reg.h>
-#include <linux/atomic.h>
-
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/timex.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/cpumask.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-
-#define IPI_SCHEDULE 1
-#define IPI_CALL 2
-#define IPI_FLUSH_TLB 4
-#define IPI_BOOT 8
-
-#define FLUSH_ALL (void*)0xffffffff
-
-/* Vector of locks used for various atomic operations */
-spinlock_t cris_atomic_locks[] = {
- [0 ... LOCK_COUNT - 1] = __SPIN_LOCK_UNLOCKED(cris_atomic_locks)
-};
-
-/* CPU masks */
-cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
-EXPORT_SYMBOL(phys_cpu_present_map);
-
-/* Variables used during SMP boot */
-volatile int cpu_now_booting = 0;
-volatile struct thread_info *smp_init_current_idle_thread;
-
-/* Variables used during IPI */
-static DEFINE_SPINLOCK(call_lock);
-static DEFINE_SPINLOCK(tlbstate_lock);
-
-struct call_data_struct {
- void (*func) (void *info);
- void *info;
- int wait;
-};
-
-static struct call_data_struct * call_data;
-
-static struct mm_struct* flush_mm;
-static struct vm_area_struct* flush_vma;
-static unsigned long flush_addr;
-
-/* Mode registers */
-static unsigned long irq_regs[NR_CPUS] = {
- regi_irq,
- regi_irq2
-};
-
-static irqreturn_t crisv32_ipi_interrupt(int irq, void *dev_id);
-static int send_ipi(int vector, int wait, cpumask_t cpu_mask);
-static struct irqaction irq_ipi = {
- .handler = crisv32_ipi_interrupt,
- .flags = 0,
- .name = "ipi",
-};
-
-extern void cris_mmu_init(void);
-extern void cris_timer_init(void);
-
-/* SMP initialization */
-void __init smp_prepare_cpus(unsigned int max_cpus)
-{
- int i;
-
- /* From now on we can expect IPIs so set them up */
- setup_irq(IPI_INTR_VECT, &irq_ipi);
-
- /* Mark all possible CPUs as present */
- for (i = 0; i < max_cpus; i++)
- cpumask_set_cpu(i, &phys_cpu_present_map);
-}
-
-void smp_prepare_boot_cpu(void)
-{
- /* PGD pointer has moved after per_cpu initialization so
- * update the MMU.
- */
- pgd_t **pgd;
- pgd = (pgd_t**)&per_cpu(current_pgd, smp_processor_id());
-
- SUPP_BANK_SEL(1);
- SUPP_REG_WR(RW_MM_TLB_PGD, pgd);
- SUPP_BANK_SEL(2);
- SUPP_REG_WR(RW_MM_TLB_PGD, pgd);
-
- set_cpu_online(0, true);
- cpumask_set_cpu(0, &phys_cpu_present_map);
- set_cpu_possible(0, true);
-}
-
-void __init smp_cpus_done(unsigned int max_cpus)
-{
-}
-
-/* Bring one cpu online.*/
-static int __init
-smp_boot_one_cpu(int cpuid, struct task_struct idle)
-{
- unsigned timeout;
- cpumask_t cpu_mask;
-
- cpumask_clear(&cpu_mask);
- task_thread_info(idle)->cpu = cpuid;
-
- /* Information to the CPU that is about to boot */
- smp_init_current_idle_thread = task_thread_info(idle);
- cpu_now_booting = cpuid;
-
- /* Kick it */
- set_cpu_online(cpuid, true);
- cpumask_set_cpu(cpuid, &cpu_mask);
- send_ipi(IPI_BOOT, 0, cpu_mask);
- set_cpu_online(cpuid, false);
-
- /* Wait for CPU to come online */
- for (timeout = 0; timeout < 10000; timeout++) {
- if(cpu_online(cpuid)) {
- cpu_now_booting = 0;
- smp_init_current_idle_thread = NULL;
- return 0; /* CPU online */
- }
- udelay(100);
- barrier();
- }
-
- printk(KERN_CRIT "SMP: CPU:%d is stuck.\n", cpuid);
- return -1;
-}
-
-/* Secondary CPUs starts using C here. Here we need to setup CPU
- * specific stuff such as the local timer and the MMU. */
-void __init smp_callin(void)
-{
- int cpu = cpu_now_booting;
- reg_intr_vect_rw_mask vect_mask = {0};
-
- /* Initialise the idle task for this CPU */
- atomic_inc(&init_mm.mm_count);
- current->active_mm = &init_mm;
-
- /* Set up MMU */
- cris_mmu_init();
- __flush_tlb_all();
-
- /* Setup local timer. */
- cris_timer_init();
-
- /* Enable IRQ and idle */
- REG_WR(intr_vect, irq_regs[cpu], rw_mask, vect_mask);
- crisv32_unmask_irq(IPI_INTR_VECT);
- crisv32_unmask_irq(TIMER0_INTR_VECT);
- preempt_disable();
- notify_cpu_starting(cpu);
- local_irq_enable();
-
- set_cpu_online(cpu, true);
- cpu_startup_entry(CPUHP_ONLINE);
-}
-
-/* Stop execution on this CPU.*/
-void stop_this_cpu(void* dummy)
-{
- local_irq_disable();
- asm volatile("halt");
-}
-
-/* Other calls */
-void smp_send_stop(void)
-{
- smp_call_function(stop_this_cpu, NULL, 0);
-}
-
-int setup_profiling_timer(unsigned int multiplier)
-{
- return -EINVAL;
-}
-
-
-/* cache_decay_ticks is used by the scheduler to decide if a process
- * is "hot" on one CPU. A higher value means a higher penalty to move
- * a process to another CPU. Our cache is rather small so we report
- * 1 tick.
- */
-unsigned long cache_decay_ticks = 1;
-
-int __cpu_up(unsigned int cpu, struct task_struct *tidle)
-{
- smp_boot_one_cpu(cpu, tidle);
- return cpu_online(cpu) ? 0 : -ENOSYS;
-}
-
-void smp_send_reschedule(int cpu)
-{
- cpumask_t cpu_mask;
- cpumask_clear(&cpu_mask);
- cpumask_set_cpu(cpu, &cpu_mask);
- send_ipi(IPI_SCHEDULE, 0, cpu_mask);
-}
-
-/* TLB flushing
- *
- * Flush needs to be done on the local CPU and on any other CPU that
- * may have the same mapping. The mm->cpu_vm_mask is used to keep track
- * of which CPUs that a specific process has been executed on.
- */
-void flush_tlb_common(struct mm_struct* mm, struct vm_area_struct* vma, unsigned long addr)
-{
- unsigned long flags;
- cpumask_t cpu_mask;
-
- spin_lock_irqsave(&tlbstate_lock, flags);
- cpu_mask = (mm == FLUSH_ALL ? cpu_all_mask : *mm_cpumask(mm));
- cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
- flush_mm = mm;
- flush_vma = vma;
- flush_addr = addr;
- send_ipi(IPI_FLUSH_TLB, 1, cpu_mask);
- spin_unlock_irqrestore(&tlbstate_lock, flags);
-}
-
-void flush_tlb_all(void)
-{
- __flush_tlb_all();
- flush_tlb_common(FLUSH_ALL, FLUSH_ALL, 0);
-}
-
-void flush_tlb_mm(struct mm_struct *mm)
-{
- __flush_tlb_mm(mm);
- flush_tlb_common(mm, FLUSH_ALL, 0);
- /* No more mappings in other CPUs */
- cpumask_clear(mm_cpumask(mm));
- cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm));
-}
-
-void flush_tlb_page(struct vm_area_struct *vma,
- unsigned long addr)
-{
- __flush_tlb_page(vma, addr);
- flush_tlb_common(vma->vm_mm, vma, addr);
-}
-
-/* Inter processor interrupts
- *
- * The IPIs are used for:
- * * Force a schedule on a CPU
- * * FLush TLB on other CPUs
- * * Call a function on other CPUs
- */
-
-int send_ipi(int vector, int wait, cpumask_t cpu_mask)
-{
- int i = 0;
- reg_intr_vect_rw_ipi ipi = REG_RD(intr_vect, irq_regs[i], rw_ipi);
- int ret = 0;
-
- /* Calculate CPUs to send to. */
- cpumask_and(&cpu_mask, &cpu_mask, cpu_online_mask);
-
- /* Send the IPI. */
- for_each_cpu(i, &cpu_mask)
- {
- ipi.vector |= vector;
- REG_WR(intr_vect, irq_regs[i], rw_ipi, ipi);
- }
-
- /* Wait for IPI to finish on other CPUS */
- if (wait) {
- for_each_cpu(i, &cpu_mask) {
- int j;
- for (j = 0 ; j < 1000; j++) {
- ipi = REG_RD(intr_vect, irq_regs[i], rw_ipi);
- if (!ipi.vector)
- break;
- udelay(100);
- }
-
- /* Timeout? */
- if (ipi.vector) {
- printk("SMP call timeout from %d to %d\n", smp_processor_id(), i);
- ret = -ETIMEDOUT;
- dump_stack();
- }
- }
- }
- return ret;
-}
-
-/*
- * You must not call this function with disabled interrupts or from a
- * hardware interrupt handler or from a bottom half handler.
- */
-int smp_call_function(void (*func)(void *info), void *info, int wait)
-{
- cpumask_t cpu_mask;
- struct call_data_struct data;
- int ret;
-
- cpumask_setall(&cpu_mask);
- cpumask_clear_cpu(smp_processor_id(), &cpu_mask);
-
- WARN_ON(irqs_disabled());
-
- data.func = func;
- data.info = info;
- data.wait = wait;
-
- spin_lock(&call_lock);
- call_data = &data;
- ret = send_ipi(IPI_CALL, wait, cpu_mask);
- spin_unlock(&call_lock);
-
- return ret;
-}
-
-irqreturn_t crisv32_ipi_interrupt(int irq, void *dev_id)
-{
- void (*func) (void *info) = call_data->func;
- void *info = call_data->info;
- reg_intr_vect_rw_ipi ipi;
-
- ipi = REG_RD(intr_vect, irq_regs[smp_processor_id()], rw_ipi);
-
- if (ipi.vector & IPI_SCHEDULE) {
- scheduler_ipi();
- }
- if (ipi.vector & IPI_CALL) {
- func(info);
- }
- if (ipi.vector & IPI_FLUSH_TLB) {
- if (flush_mm == FLUSH_ALL)
- __flush_tlb_all();
- else if (flush_vma == FLUSH_ALL)
- __flush_tlb_mm(flush_mm);
- else
- __flush_tlb_page(flush_vma, flush_addr);
- }
-
- ipi.vector = 0;
- REG_WR(intr_vect, irq_regs[smp_processor_id()], rw_ipi, ipi);
-
- return IRQ_HANDLED;
-}
-
#include <linux/timex.h>
#include <linux/time.h>
#include <linux/clocksource.h>
+#include <linux/clockchips.h>
#include <linux/interrupt.h>
#include <linux/swap.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/threads.h>
#include <linux/cpufreq.h>
+#include <linux/sched_clock.h>
#include <linux/mm.h>
#include <asm/types.h>
#include <asm/signal.h>
/* Number of 763 counts before watchdog bites */
#define ETRAX_WD_CNT ((2*ETRAX_WD_HZ)/HZ + 1)
-/* Register the continuos readonly timer available in FS and ARTPEC-3. */
-static cycle_t read_cont_rotime(struct clocksource *cs)
-{
- return (u32)REG_RD(timer, regi_timer0, r_time);
-}
-
-static struct clocksource cont_rotime = {
- .name = "crisv32_rotime",
- .rating = 300,
- .read = read_cont_rotime,
- .mask = CLOCKSOURCE_MASK(32),
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static int __init etrax_init_cont_rotime(void)
-{
- clocksource_register_khz(&cont_rotime, 100000);
- return 0;
-}
-arch_initcall(etrax_init_cont_rotime);
+#define CRISV32_TIMER_FREQ (100000000lu)
unsigned long timer_regs[NR_CPUS] =
{
regi_timer0,
-#ifdef CONFIG_SMP
- regi_timer2
-#endif
};
extern int set_rtc_mmss(unsigned long nowtime);
#endif
}
-/*
- * timer_interrupt() needs to keep up the real-time clock,
- * as well as call the "xtime_update()" routine every clocktick.
- */
-extern void cris_do_profile(struct pt_regs *regs);
+extern void cris_profile_sample(struct pt_regs *regs);
+static void __iomem *timer_base;
-static inline irqreturn_t timer_interrupt(int irq, void *dev_id)
+static void crisv32_clkevt_mode(enum clock_event_mode mode,
+ struct clock_event_device *dev)
{
- struct pt_regs *regs = get_irq_regs();
- int cpu = smp_processor_id();
- reg_timer_r_masked_intr masked_intr;
- reg_timer_rw_ack_intr ack_intr = { 0 };
-
- /* Check if the timer interrupt is for us (a tmr0 int) */
- masked_intr = REG_RD(timer, timer_regs[cpu], r_masked_intr);
- if (!masked_intr.tmr0)
- return IRQ_NONE;
+ reg_timer_rw_tmr0_ctrl ctrl = {
+ .op = regk_timer_hold,
+ .freq = regk_timer_f100,
+ };
- /* Acknowledge the timer irq. */
- ack_intr.tmr0 = 1;
- REG_WR(timer, timer_regs[cpu], rw_ack_intr, ack_intr);
+ REG_WR(timer, timer_base, rw_tmr0_ctrl, ctrl);
+}
- /* Reset watchdog otherwise it resets us! */
- reset_watchdog();
+static int crisv32_clkevt_next_event(unsigned long evt,
+ struct clock_event_device *dev)
+{
+ reg_timer_rw_tmr0_ctrl ctrl = {
+ .op = regk_timer_ld,
+ .freq = regk_timer_f100,
+ };
+
+ REG_WR(timer, timer_base, rw_tmr0_div, evt);
+ REG_WR(timer, timer_base, rw_tmr0_ctrl, ctrl);
+
+ ctrl.op = regk_timer_run;
+ REG_WR(timer, timer_base, rw_tmr0_ctrl, ctrl);
+
+ return 0;
+}
+
+static irqreturn_t crisv32_timer_interrupt(int irq, void *dev_id)
+{
+ struct clock_event_device *evt = dev_id;
+ reg_timer_rw_tmr0_ctrl ctrl = {
+ .op = regk_timer_hold,
+ .freq = regk_timer_f100,
+ };
+ reg_timer_rw_ack_intr ack = { .tmr0 = 1 };
+ reg_timer_r_masked_intr intr;
+
+ intr = REG_RD(timer, timer_base, r_masked_intr);
+ if (!intr.tmr0)
+ return IRQ_NONE;
- /* Update statistics. */
- update_process_times(user_mode(regs));
+ REG_WR(timer, timer_base, rw_tmr0_ctrl, ctrl);
+ REG_WR(timer, timer_base, rw_ack_intr, ack);
- cris_do_profile(regs); /* Save profiling information */
+ reset_watchdog();
+#ifdef CONFIG_SYSTEM_PROFILER
+ cris_profile_sample(get_irq_regs());
+#endif
- /* The master CPU is responsible for the time keeping. */
- if (cpu != 0)
- return IRQ_HANDLED;
+ evt->event_handler(evt);
- /* Call the real timer interrupt handler */
- xtime_update(1);
return IRQ_HANDLED;
}
+static struct clock_event_device crisv32_clockevent = {
+ .name = "crisv32-timer",
+ .rating = 300,
+ .features = CLOCK_EVT_FEAT_ONESHOT,
+ .set_mode = crisv32_clkevt_mode,
+ .set_next_event = crisv32_clkevt_next_event,
+};
+
/* Timer is IRQF_SHARED so drivers can add stuff to the timer irq chain. */
static struct irqaction irq_timer = {
- .handler = timer_interrupt,
- .flags = IRQF_SHARED,
- .name = "timer"
+ .handler = crisv32_timer_interrupt,
+ .flags = IRQF_TIMER | IRQF_SHARED,
+ .name = "crisv32-timer",
+ .dev_id = &crisv32_clockevent,
};
-void __init cris_timer_init(void)
+static u64 notrace crisv32_timer_sched_clock(void)
{
- int cpu = smp_processor_id();
- reg_timer_rw_tmr0_ctrl tmr0_ctrl = { 0 };
- reg_timer_rw_tmr0_div tmr0_div = TIMER0_DIV;
- reg_timer_rw_intr_mask timer_intr_mask;
+ return REG_RD(timer, timer_base, r_time);
+}
- /* Setup the etrax timers.
- * Base frequency is 100MHz, divider 1000000 -> 100 HZ
- * We use timer0, so timer1 is free.
- * The trig timer is used by the fasttimer API if enabled.
- */
+static void __init crisv32_timer_init(void)
+{
+ reg_timer_rw_intr_mask timer_intr_mask;
+ reg_timer_rw_tmr0_ctrl ctrl = {
+ .op = regk_timer_hold,
+ .freq = regk_timer_f100,
+ };
- tmr0_ctrl.op = regk_timer_ld;
- tmr0_ctrl.freq = regk_timer_f100;
- REG_WR(timer, timer_regs[cpu], rw_tmr0_div, tmr0_div);
- REG_WR(timer, timer_regs[cpu], rw_tmr0_ctrl, tmr0_ctrl); /* Load */
- tmr0_ctrl.op = regk_timer_run;
- REG_WR(timer, timer_regs[cpu], rw_tmr0_ctrl, tmr0_ctrl); /* Start */
+ REG_WR(timer, timer_base, rw_tmr0_ctrl, ctrl);
- /* Enable the timer irq. */
- timer_intr_mask = REG_RD(timer, timer_regs[cpu], rw_intr_mask);
+ timer_intr_mask = REG_RD(timer, timer_base, rw_intr_mask);
timer_intr_mask.tmr0 = 1;
- REG_WR(timer, timer_regs[cpu], rw_intr_mask, timer_intr_mask);
+ REG_WR(timer, timer_base, rw_intr_mask, timer_intr_mask);
}
void __init time_init(void)
{
- reg_intr_vect_rw_mask intr_mask;
+ int irq;
+ int ret;
/* Probe for the RTC and read it if it exists.
* Before the RTC can be probed the loops_per_usec variable needs
*/
loops_per_usec = 50;
- /* Start CPU local timer. */
- cris_timer_init();
+ irq = TIMER0_INTR_VECT;
+ timer_base = (void __iomem *) regi_timer0;
+
+ crisv32_timer_init();
+
+ sched_clock_register(crisv32_timer_sched_clock, 32,
+ CRISV32_TIMER_FREQ);
+
+ clocksource_mmio_init(timer_base + REG_RD_ADDR_timer_r_time,
+ "crisv32-timer", CRISV32_TIMER_FREQ,
+ 300, 32, clocksource_mmio_readl_up);
+
+ crisv32_clockevent.cpumask = cpu_possible_mask;
+ crisv32_clockevent.irq = irq;
- /* Enable the timer irq in global config. */
- intr_mask = REG_RD_VECT(intr_vect, regi_irq, rw_mask, 1);
- intr_mask.timer0 = 1;
- REG_WR_VECT(intr_vect, regi_irq, rw_mask, 1, intr_mask);
+ ret = setup_irq(irq, &irq_timer);
+ if (ret)
+ pr_warn("failed to setup irq %d\n", irq);
- /* Now actually register the timer irq handler that calls
- * timer_interrupt(). */
- setup_irq(TIMER0_INTR_VECT, &irq_timer);
+ clockevents_config_and_register(&crisv32_clockevent,
+ CRISV32_TIMER_FREQ,
+ 2, 0xffffffff);
/* Enable watchdog if we should use one. */
#
lib-y = checksum.o checksumcopy.o string.o usercopy.o memset.o \
- csumcpfruser.o spinlock.o delay.o strcmp.o
+ csumcpfruser.o delay.o strcmp.o
+++ /dev/null
-;; Core of the spinlock implementation
-;;
-;; Copyright (C) 2004 Axis Communications AB.
-;;
-;; Author: Mikael Starvik
-
-
- .global cris_spin_lock
- .type cris_spin_lock,@function
- .global cris_spin_trylock
- .type cris_spin_trylock,@function
-
- .text
-
-cris_spin_lock:
- clearf p
-1: test.b [$r10]
- beq 1b
- clearf p
- ax
- clear.b [$r10]
- bcs 1b
- clearf p
- ret
- nop
-
- .size cris_spin_lock, . - cris_spin_lock
-
-cris_spin_trylock:
- clearf p
-1: move.b [$r10], $r11
- ax
- clear.b [$r10]
- bcs 1b
- clearf p
- ret
- movu.b $r11,$r10
-
- .size cris_spin_trylock, . - cris_spin_trylock
-
*/
per_cpu(current_pgd, smp_processor_id()) = init_mm.pgd;
-#ifdef CONFIG_SMP
- {
- pgd_t **pgd;
- pgd = (pgd_t**)&per_cpu(current_pgd, smp_processor_id());
- SUPP_BANK_SEL(1);
- SUPP_REG_WR(RW_MM_TLB_PGD, pgd);
- SUPP_BANK_SEL(2);
- SUPP_REG_WR(RW_MM_TLB_PGD, pgd);
- }
-#endif
-
/* Initialise the TLB. Function found in tlb.c. */
tlb_init();
move.d $r0, [$r1] ; last_refill_cause = rw_mm_cause
3: ; Probably not in a loop, continue normal processing
-#ifdef CONFIG_SMP
- move $s7, $acr ; PGD
-#else
move.d current_pgd, $acr ; PGD
-#endif
; Look up PMD in PGD
lsrq 24, $r0 ; Get PMD index into PGD (bit 24-31)
move.d [$acr], $acr ; PGD for the current process
--- /dev/null
+BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_BUILTIN_DTB)).dtb.o
+ifneq ($(CONFIG_BUILTIN_DTB),"")
+obj-$(CONFIG_OF) += $(BUILTIN_DTB)
+endif
+
+clean-files := *.dtb.S
--- /dev/null
+/dts-v1/;
+
+/include/ "etraxfs.dtsi"
+
+/ {
+ model = "Axis 88 Developer Board";
+ compatible = "axis,dev88";
+
+ aliases {
+ serial0 = &uart0;
+ };
+
+ soc {
+ uart0: serial@b00260000 {
+ status = "okay";
+ };
+ };
+};
--- /dev/null
+/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ interrupt-parent = <&intc>;
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ model = "axis,crisv32";
+ reg = <0>;
+ };
+ };
+
+ soc {
+ compatible = "simple-bus";
+ model = "etraxfs";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ intc: interrupt-controller {
+ compatible = "axis,crisv32-intc";
+ reg = <0xb001c000 0x1000>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+
+ serial@b00260000 {
+ compatible = "axis,etraxfs-uart";
+ reg = <0xb0026000 0x1000>;
+ interrupts = <68>;
+ status = "disabled";
+ };
+ };
+};
+++ /dev/null
-#ifndef __ASM_CRIS_ARCH_ATOMIC__
-#define __ASM_CRIS_ARCH_ATOMIC__
-
-#define cris_atomic_save(addr, flags) local_irq_save(flags);
-#define cris_atomic_restore(addr, flags) local_irq_restore(flags);
-
-#endif
return 0;
}
-#define nop() __asm__ __volatile__ ("nop");
-
-#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
-#define tas(ptr) (xchg((ptr),1))
-
-struct __xchg_dummy { unsigned long a[100]; };
-#define __xg(x) ((struct __xchg_dummy *)(x))
-
#endif
+++ /dev/null
-#ifndef __ASM_CRIS_ARCH_ATOMIC__
-#define __ASM_CRIS_ARCH_ATOMIC__
-
-#include <linux/spinlock_types.h>
-
-extern void cris_spin_unlock(void *l, int val);
-extern void cris_spin_lock(void *l);
-extern int cris_spin_trylock(void* l);
-
-#ifndef CONFIG_SMP
-#define cris_atomic_save(addr, flags) local_irq_save(flags);
-#define cris_atomic_restore(addr, flags) local_irq_restore(flags);
-#else
-
-extern spinlock_t cris_atomic_locks[];
-#define LOCK_COUNT 128
-#define HASH_ADDR(a) (((int)a) & 127)
-
-#define cris_atomic_save(addr, flags) \
- local_irq_save(flags); \
- cris_spin_lock((void *)&cris_atomic_locks[HASH_ADDR(addr)].raw_lock.slock);
-
-#define cris_atomic_restore(addr, flags) \
- { \
- spinlock_t *lock = (void*)&cris_atomic_locks[HASH_ADDR(addr)]; \
- __asm__ volatile ("move.d %1,%0" \
- : "=m" (lock->raw_lock.slock) \
- : "r" (1) \
- : "memory"); \
- local_irq_restore(flags); \
- }
-
-#endif
-
-#endif
-
*/
#define TASK_SIZE (0xB0000000UL)
-/* CCS I=1, enable interrupts. */
-#define INIT_THREAD { 0, 0, (1 << I_CCS_BITNR) }
+#define INIT_THREAD { }
#define KSTK_EIP(tsk) \
({ \
+++ /dev/null
-#ifndef __ASM_ARCH_SPINLOCK_H
-#define __ASM_ARCH_SPINLOCK_H
-
-#include <linux/spinlock_types.h>
-
-#define RW_LOCK_BIAS 0x01000000
-
-extern void cris_spin_unlock(void *l, int val);
-extern void cris_spin_lock(void *l);
-extern int cris_spin_trylock(void *l);
-
-static inline int arch_spin_is_locked(arch_spinlock_t *x)
-{
- return *(volatile signed char *)(&(x)->slock) <= 0;
-}
-
-static inline void arch_spin_unlock(arch_spinlock_t *lock)
-{
- __asm__ volatile ("move.d %1,%0" \
- : "=m" (lock->slock) \
- : "r" (1) \
- : "memory");
-}
-
-static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
-{
- while (arch_spin_is_locked(lock))
- cpu_relax();
-}
-
-static inline int arch_spin_trylock(arch_spinlock_t *lock)
-{
- return cris_spin_trylock((void *)&lock->slock);
-}
-
-static inline void arch_spin_lock(arch_spinlock_t *lock)
-{
- cris_spin_lock((void *)&lock->slock);
-}
-
-static inline void
-arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags)
-{
- arch_spin_lock(lock);
-}
-
-/*
- * Read-write spinlocks, allowing multiple readers
- * but only one writer.
- *
- * NOTE! it is quite common to have readers in interrupts
- * but no interrupt writers. For those circumstances we
- * can "mix" irq-safe locks - any writer needs to get a
- * irq-safe write-lock, but readers can get non-irqsafe
- * read-locks.
- *
- */
-
-static inline int arch_read_can_lock(arch_rwlock_t *x)
-{
- return (int)(x)->lock > 0;
-}
-
-static inline int arch_write_can_lock(arch_rwlock_t *x)
-{
- return (x)->lock == RW_LOCK_BIAS;
-}
-
-static inline void arch_read_lock(arch_rwlock_t *rw)
-{
- arch_spin_lock(&rw->slock);
- while (rw->lock == 0);
- rw->lock--;
- arch_spin_unlock(&rw->slock);
-}
-
-static inline void arch_write_lock(arch_rwlock_t *rw)
-{
- arch_spin_lock(&rw->slock);
- while (rw->lock != RW_LOCK_BIAS);
- rw->lock = 0;
- arch_spin_unlock(&rw->slock);
-}
-
-static inline void arch_read_unlock(arch_rwlock_t *rw)
-{
- arch_spin_lock(&rw->slock);
- rw->lock++;
- arch_spin_unlock(&rw->slock);
-}
-
-static inline void arch_write_unlock(arch_rwlock_t *rw)
-{
- arch_spin_lock(&rw->slock);
- while (rw->lock != RW_LOCK_BIAS);
- rw->lock = RW_LOCK_BIAS;
- arch_spin_unlock(&rw->slock);
-}
-
-static inline int arch_read_trylock(arch_rwlock_t *rw)
-{
- int ret = 0;
- arch_spin_lock(&rw->slock);
- if (rw->lock != 0) {
- rw->lock--;
- ret = 1;
- }
- arch_spin_unlock(&rw->slock);
- return ret;
-}
-
-static inline int arch_write_trylock(arch_rwlock_t *rw)
-{
- int ret = 0;
- arch_spin_lock(&rw->slock);
- if (rw->lock == RW_LOCK_BIAS) {
- rw->lock = 0;
- ret = 1;
- }
- arch_spin_unlock(&rw->slock);
- return ret;
-}
-
-#define _raw_read_lock_flags(lock, flags) _raw_read_lock(lock)
-#define _raw_write_lock_flags(lock, flags) _raw_write_lock(lock)
-
-#define arch_spin_relax(lock) cpu_relax()
-#define arch_read_relax(lock) cpu_relax()
-#define arch_write_relax(lock) cpu_relax()
-
-#endif /* __ASM_ARCH_SPINLOCK_H */
-
+generic-y += atomic.h
generic-y += barrier.h
generic-y += clkdev.h
+generic-y += cmpxchg.h
generic-y += cputime.h
+generic-y += device.h
+generic-y += div64.h
generic-y += exec.h
+generic-y += emergency-restart.h
+generic-y += futex.h
+generic-y += hardirq.h
+generic-y += irq_regs.h
generic-y += irq_work.h
+generic-y += kdebug.h
+generic-y += kmap_types.h
generic-y += kvm_para.h
generic-y += linkage.h
+generic-y += local.h
+generic-y += local64.h
generic-y += mcs_spinlock.h
generic-y += module.h
+generic-y += percpu.h
generic-y += preempt.h
generic-y += scatterlist.h
generic-y += sections.h
+generic-y += topology.h
generic-y += trace_clock.h
generic-y += vga.h
generic-y += xor.h
+++ /dev/null
-/* $Id: atomic.h,v 1.3 2001/07/25 16:15:19 bjornw Exp $ */
-
-#ifndef __ASM_CRIS_ATOMIC__
-#define __ASM_CRIS_ATOMIC__
-
-#include <linux/compiler.h>
-#include <linux/types.h>
-#include <asm/cmpxchg.h>
-#include <arch/atomic.h>
-#include <arch/system.h>
-#include <asm/barrier.h>
-
-/*
- * Atomic operations that C can't guarantee us. Useful for
- * resource counting etc..
- */
-
-#define ATOMIC_INIT(i) { (i) }
-
-#define atomic_read(v) ACCESS_ONCE((v)->counter)
-#define atomic_set(v,i) (((v)->counter) = (i))
-
-/* These should be written in asm but we do it in C for now. */
-
-#define ATOMIC_OP(op, c_op) \
-static inline void atomic_##op(int i, volatile atomic_t *v) \
-{ \
- unsigned long flags; \
- cris_atomic_save(v, flags); \
- v->counter c_op i; \
- cris_atomic_restore(v, flags); \
-} \
-
-#define ATOMIC_OP_RETURN(op, c_op) \
-static inline int atomic_##op##_return(int i, volatile atomic_t *v) \
-{ \
- unsigned long flags; \
- int retval; \
- cris_atomic_save(v, flags); \
- retval = (v->counter c_op i); \
- cris_atomic_restore(v, flags); \
- return retval; \
-}
-
-#define ATOMIC_OPS(op, c_op) ATOMIC_OP(op, c_op) ATOMIC_OP_RETURN(op, c_op)
-
-ATOMIC_OPS(add, +=)
-ATOMIC_OPS(sub, -=)
-
-#undef ATOMIC_OPS
-#undef ATOMIC_OP_RETURN
-#undef ATOMIC_OP
-
-#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0)
-
-static inline int atomic_sub_and_test(int i, volatile atomic_t *v)
-{
- int retval;
- unsigned long flags;
- cris_atomic_save(v, flags);
- retval = (v->counter -= i) == 0;
- cris_atomic_restore(v, flags);
- return retval;
-}
-
-static inline void atomic_inc(volatile atomic_t *v)
-{
- unsigned long flags;
- cris_atomic_save(v, flags);
- (v->counter)++;
- cris_atomic_restore(v, flags);
-}
-
-static inline void atomic_dec(volatile atomic_t *v)
-{
- unsigned long flags;
- cris_atomic_save(v, flags);
- (v->counter)--;
- cris_atomic_restore(v, flags);
-}
-
-static inline int atomic_inc_return(volatile atomic_t *v)
-{
- unsigned long flags;
- int retval;
- cris_atomic_save(v, flags);
- retval = ++(v->counter);
- cris_atomic_restore(v, flags);
- return retval;
-}
-
-static inline int atomic_dec_return(volatile atomic_t *v)
-{
- unsigned long flags;
- int retval;
- cris_atomic_save(v, flags);
- retval = --(v->counter);
- cris_atomic_restore(v, flags);
- return retval;
-}
-static inline int atomic_dec_and_test(volatile atomic_t *v)
-{
- int retval;
- unsigned long flags;
- cris_atomic_save(v, flags);
- retval = --(v->counter) == 0;
- cris_atomic_restore(v, flags);
- return retval;
-}
-
-static inline int atomic_inc_and_test(volatile atomic_t *v)
-{
- int retval;
- unsigned long flags;
- cris_atomic_save(v, flags);
- retval = ++(v->counter) == 0;
- cris_atomic_restore(v, flags);
- return retval;
-}
-
-static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
-{
- int ret;
- unsigned long flags;
-
- cris_atomic_save(v, flags);
- ret = v->counter;
- if (likely(ret == old))
- v->counter = new;
- cris_atomic_restore(v, flags);
- return ret;
-}
-
-#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
-
-static inline int __atomic_add_unless(atomic_t *v, int a, int u)
-{
- int ret;
- unsigned long flags;
-
- cris_atomic_save(v, flags);
- ret = v->counter;
- if (ret != u)
- v->counter += a;
- cris_atomic_restore(v, flags);
- return ret;
-}
-
-#endif
#endif
#include <arch/bitops.h>
-#include <linux/atomic.h>
#include <linux/compiler.h>
#include <asm/barrier.h>
-/*
- * set_bit - Atomically set a bit in memory
- * @nr: the bit to set
- * @addr: the address to start counting from
- *
- * This function is atomic and may not be reordered. See __set_bit()
- * if you do not require the atomic guarantees.
- * Note that @nr may be almost arbitrarily large; this function is not
- * restricted to acting on a single-word quantity.
- */
-
-#define set_bit(nr, addr) (void)test_and_set_bit(nr, addr)
-
-/*
- * clear_bit - Clears a bit in memory
- * @nr: Bit to clear
- * @addr: Address to start counting from
- *
- * clear_bit() is atomic and may not be reordered. However, it does
- * not contain a memory barrier, so if it is used for locking purposes,
- * you should call smp_mb__before_atomic() and/or smp_mb__after_atomic()
- * in order to ensure changes are visible on other processors.
- */
-
-#define clear_bit(nr, addr) (void)test_and_clear_bit(nr, addr)
-
-/*
- * change_bit - Toggle a bit in memory
- * @nr: Bit to change
- * @addr: Address to start counting from
- *
- * change_bit() is atomic and may not be reordered.
- * Note that @nr may be almost arbitrarily large; this function is not
- * restricted to acting on a single-word quantity.
- */
-
-#define change_bit(nr, addr) (void)test_and_change_bit(nr, addr)
-
-/**
- * test_and_set_bit - Set a bit and return its old value
- * @nr: Bit to set
- * @addr: Address to count from
- *
- * This operation is atomic and cannot be reordered.
- * It also implies a memory barrier.
- */
-
-static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
-{
- unsigned int mask, retval;
- unsigned long flags;
- unsigned int *adr = (unsigned int *)addr;
-
- adr += nr >> 5;
- mask = 1 << (nr & 0x1f);
- cris_atomic_save(addr, flags);
- retval = (mask & *adr) != 0;
- *adr |= mask;
- cris_atomic_restore(addr, flags);
- return retval;
-}
-
-/**
- * test_and_clear_bit - Clear a bit and return its old value
- * @nr: Bit to clear
- * @addr: Address to count from
- *
- * This operation is atomic and cannot be reordered.
- * It also implies a memory barrier.
- */
-
-static inline int test_and_clear_bit(int nr, volatile unsigned long *addr)
-{
- unsigned int mask, retval;
- unsigned long flags;
- unsigned int *adr = (unsigned int *)addr;
-
- adr += nr >> 5;
- mask = 1 << (nr & 0x1f);
- cris_atomic_save(addr, flags);
- retval = (mask & *adr) != 0;
- *adr &= ~mask;
- cris_atomic_restore(addr, flags);
- return retval;
-}
-
-/**
- * test_and_change_bit - Change a bit and return its old value
- * @nr: Bit to change
- * @addr: Address to count from
- *
- * This operation is atomic and cannot be reordered.
- * It also implies a memory barrier.
- */
-
-static inline int test_and_change_bit(int nr, volatile unsigned long *addr)
-{
- unsigned int mask, retval;
- unsigned long flags;
- unsigned int *adr = (unsigned int *)addr;
- adr += nr >> 5;
- mask = 1 << (nr & 0x1f);
- cris_atomic_save(addr, flags);
- retval = (mask & *adr) != 0;
- *adr ^= mask;
- cris_atomic_restore(addr, flags);
- return retval;
-}
-
+#include <asm-generic/bitops/atomic.h>
#include <asm-generic/bitops/non-atomic.h>
/*
+++ /dev/null
-#ifndef __ASM_CRIS_CMPXCHG__
-#define __ASM_CRIS_CMPXCHG__
-
-#include <linux/irqflags.h>
-
-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
-{
- /* since Etrax doesn't have any atomic xchg instructions, we need to disable
- irq's (if enabled) and do it with move.d's */
- unsigned long flags,temp;
- local_irq_save(flags); /* save flags, including irq enable bit and shut off irqs */
- switch (size) {
- case 1:
- *((unsigned char *)&temp) = x;
- x = *(unsigned char *)ptr;
- *(unsigned char *)ptr = *((unsigned char *)&temp);
- break;
- case 2:
- *((unsigned short *)&temp) = x;
- x = *(unsigned short *)ptr;
- *(unsigned short *)ptr = *((unsigned short *)&temp);
- break;
- case 4:
- temp = x;
- x = *(unsigned long *)ptr;
- *(unsigned long *)ptr = temp;
- break;
- }
- local_irq_restore(flags); /* restore irq enable bit */
- return x;
-}
-
-#define xchg(ptr,x) \
- ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
-
-#define tas(ptr) (xchg((ptr),1))
-
-#include <asm-generic/cmpxchg-local.h>
-
-/*
- * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
- * them available.
- */
-#define cmpxchg_local(ptr, o, n) \
- ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
- (unsigned long)(n), sizeof(*(ptr))))
-#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
-
-#ifndef CONFIG_SMP
-#include <asm-generic/cmpxchg.h>
-#endif
-
-#endif /* __ASM_CRIS_CMPXCHG__ */
+++ /dev/null
-/*
- * Arch specific extensions to struct device
- *
- * This file is released under the GPLv2
- */
-#include <asm-generic/device.h>
-
+++ /dev/null
-#include <asm-generic/div64.h>
the loader. We need to make sure that it is out of the way of the program
that it will "exec", and that there is sufficient room for the brk. */
-#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
+#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
/* This yields a mask that user programs can use to figure out what
instruction set this CPU supports. This could be done in user space,
+++ /dev/null
-#ifndef _ASM_EMERGENCY_RESTART_H
-#define _ASM_EMERGENCY_RESTART_H
-
-#include <asm-generic/emergency-restart.h>
-
-#endif /* _ASM_EMERGENCY_RESTART_H */
+++ /dev/null
-#ifndef _ASM_FUTEX_H
-#define _ASM_FUTEX_H
-
-#include <asm-generic/futex.h>
-
-#endif
+++ /dev/null
-#ifndef __ASM_HARDIRQ_H
-#define __ASM_HARDIRQ_H
-
-#include <asm/irq.h>
-#include <asm-generic/hardirq.h>
-
-#endif /* __ASM_HARDIRQ_H */
+++ /dev/null
-#include <asm-generic/irq_regs.h>
+++ /dev/null
-#include <asm-generic/kdebug.h>
+++ /dev/null
-#ifndef _ASM_KMAP_TYPES_H
-#define _ASM_KMAP_TYPES_H
-
-/* Dummy header just to define km_type. None of this
- * is actually used on cris.
- */
-
-#include <asm-generic/kmap_types.h>
-
-#endif
+++ /dev/null
-#include <asm-generic/local.h>
+++ /dev/null
-#include <asm-generic/local64.h>
+++ /dev/null
-#ifndef _CRIS_PERCPU_H
-#define _CRIS_PERCPU_H
-
-#include <asm-generic/percpu.h>
-
-#endif /* _CRIS_PERCPU_H */
+++ /dev/null
-#ifndef __ASM_SMP_H
-#define __ASM_SMP_H
-
-#include <linux/cpumask.h>
-
-extern cpumask_t phys_cpu_present_map;
-
-#define raw_smp_processor_id() (current_thread_info()->cpu)
-
-#endif
+++ /dev/null
-#include <arch/spinlock.h>
extern void __flush_tlb_page(struct vm_area_struct *vma,
unsigned long addr);
-#ifdef CONFIG_SMP
-extern void flush_tlb_all(void);
-extern void flush_tlb_mm(struct mm_struct *mm);
-extern void flush_tlb_page(struct vm_area_struct *vma,
- unsigned long addr);
-#else
#define flush_tlb_all __flush_tlb_all
#define flush_tlb_mm __flush_tlb_mm
#define flush_tlb_page __flush_tlb_page
-#endif
static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long start, unsigned long end)
{
+++ /dev/null
-#ifndef _ASM_CRIS_TOPOLOGY_H
-#define _ASM_CRIS_TOPOLOGY_H
-
-#include <asm-generic/topology.h>
-
-#endif /* _ASM_CRIS_TOPOLOGY_H */
extra-y := vmlinux.lds
obj-y := process.o traps.o irq.o ptrace.o setup.o time.o sys_cris.o
+obj-y += devicetree.o
obj-$(CONFIG_MODULES) += crisksyms.o
obj-$(CONFIG_MODULES) += module.o
--- /dev/null
+#include <linux/init.h>
+#include <linux/bootmem.h>
+#include <linux/printk.h>
+
+void __init early_init_dt_add_memory_arch(u64 base, u64 size)
+{
+ pr_err("%s(%llx, %llx)\n",
+ __func__, base, size);
+}
+
+void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
+{
+ return alloc_bootmem_align(size, align);
+}
tracehook_notify_resume(regs);
}
}
+
+void do_work_pending(int syscall, struct pt_regs *regs,
+ unsigned int thread_flags)
+{
+ do {
+ if (likely(thread_flags & _TIF_NEED_RESCHED)) {
+ schedule();
+ } else {
+ if (unlikely(!user_mode(regs)))
+ return;
+ local_irq_enable();
+ if (thread_flags & _TIF_SIGPENDING) {
+ do_signal(syscall, regs);
+ syscall = 0;
+ } else {
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ tracehook_notify_resume(regs);
+ }
+ }
+ local_irq_disable();
+ thread_flags = current_thread_info()->flags;
+ } while (thread_flags & _TIF_WORK_MASK);
+}
#include <linux/utsname.h>
#include <linux/pfn.h>
#include <linux/cpu.h>
+#include <linux/of.h>
+#include <linux/of_fdt.h>
+#include <linux/of_platform.h>
#include <asm/setup.h>
#include <arch/system.h>
unsigned long start_pfn, max_pfn;
unsigned long memory_start;
+#ifdef CONFIG_OF
+ early_init_dt_scan(__dtb_start);
+#endif
+
/* register an initial console printing routine for printk's */
init_etrax_debug();
reserve_bootmem(PFN_PHYS(start_pfn), bootmap_size, BOOTMEM_DEFAULT);
+ unflatten_and_copy_device_tree();
+
/* paging_init() sets up the MMU and marks all pages as reserved */
paging_init();
subsys_initcall(topology_init);
+static int __init cris_of_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+ return 0;
+}
+core_initcall(cris_of_init);
#endif
}
+#ifndef CONFIG_GENERIC_SCHED_CLOCK
unsigned long long sched_clock(void)
{
return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ) +
get_ns_in_jiffie();
}
+#endif
static int
__init init_udelay(void)
projects / mirror_ubuntu-zesty-kernel.git / commitdiff