linux/arch/sparc/kernel/kernel.h
Pavel Tatashin 83e8eb99d9 sparc64: initialize time early
In Linux it is possible to configure printk() to output timestamp next to
every line. This is very useful to determine the slow parts of the boot
process, and also to avoid regressions, as boot time is visiable to
everyone.

Also, there are scripts that change these time stamps to intervals.

However, on larger machines these timestamps start appearing many seconds,
and even minutes into the boot process. This patch gets stick-frequency
property early from OpenBoot, and uses its value to initialize time stamps
before the first printk() messages are printed.

Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Reviewed-by: Steven Sistare <steven.sistare@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-12 15:44:03 -07:00

190 lines
5.6 KiB
C

#ifndef __SPARC_KERNEL_H
#define __SPARC_KERNEL_H
#include <linux/interrupt.h>
#include <linux/ftrace.h>
#include <asm/traps.h>
#include <asm/head.h>
#include <asm/io.h>
/* cpu.c */
extern const char *sparc_pmu_type;
extern unsigned int fsr_storage;
extern int ncpus_probed;
#ifdef CONFIG_SPARC64
/* setup_64.c */
struct seq_file;
void cpucap_info(struct seq_file *);
static inline unsigned long kimage_addr_to_ra(const void *p)
{
unsigned long val = (unsigned long) p;
return kern_base + (val - KERNBASE);
}
/* sys_sparc_64.c */
asmlinkage long sys_kern_features(void);
/* unaligned_64.c */
asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn);
int handle_popc(u32 insn, struct pt_regs *regs);
void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr);
void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr);
/* smp_64.c */
void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs);
void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs);
void __irq_entry smp_penguin_jailcell(int irq, struct pt_regs *regs);
void __irq_entry smp_receive_signal_client(int irq, struct pt_regs *regs);
/* kgdb_64.c */
void __irq_entry smp_kgdb_capture_client(int irq, struct pt_regs *regs);
/* pci.c */
int pci64_dma_supported(struct pci_dev *pdev, u64 device_mask);
/* signal32.c */
void do_sigreturn32(struct pt_regs *regs);
asmlinkage void do_rt_sigreturn32(struct pt_regs *regs);
void do_signal32(struct pt_regs * regs);
asmlinkage int do_sys32_sigstack(u32 u_ssptr, u32 u_ossptr, unsigned long sp);
/* time_64.c */
void __init time_init_early(void);
/* compat_audit.c */
extern unsigned int sparc32_dir_class[];
extern unsigned int sparc32_chattr_class[];
extern unsigned int sparc32_write_class[];
extern unsigned int sparc32_read_class[];
extern unsigned int sparc32_signal_class[];
int sparc32_classify_syscall(unsigned int syscall);
#endif
#ifdef CONFIG_SPARC32
/* setup_32.c */
struct linux_romvec;
void sparc32_start_kernel(struct linux_romvec *rp);
/* cpu.c */
void cpu_probe(void);
/* traps_32.c */
void handle_hw_divzero(struct pt_regs *regs, unsigned long pc,
unsigned long npc, unsigned long psr);
/* irq_32.c */
extern struct irqaction static_irqaction[];
extern int static_irq_count;
extern spinlock_t irq_action_lock;
void unexpected_irq(int irq, void *dev_id, struct pt_regs * regs);
void init_IRQ(void);
/* sun4m_irq.c */
void sun4m_init_IRQ(void);
void sun4m_unmask_profile_irq(void);
void sun4m_clear_profile_irq(int cpu);
/* sun4m_smp.c */
void sun4m_cpu_pre_starting(void *arg);
void sun4m_cpu_pre_online(void *arg);
void __init smp4m_boot_cpus(void);
int smp4m_boot_one_cpu(int i, struct task_struct *idle);
void __init smp4m_smp_done(void);
void smp4m_cross_call_irq(void);
void smp4m_percpu_timer_interrupt(struct pt_regs *regs);
/* sun4d_irq.c */
extern spinlock_t sun4d_imsk_lock;
void sun4d_init_IRQ(void);
int sun4d_request_irq(unsigned int irq,
irq_handler_t handler,
unsigned long irqflags,
const char *devname, void *dev_id);
int show_sun4d_interrupts(struct seq_file *, void *);
void sun4d_distribute_irqs(void);
void sun4d_free_irq(unsigned int irq, void *dev_id);
/* sun4d_smp.c */
void sun4d_cpu_pre_starting(void *arg);
void sun4d_cpu_pre_online(void *arg);
void __init smp4d_boot_cpus(void);
int smp4d_boot_one_cpu(int i, struct task_struct *idle);
void __init smp4d_smp_done(void);
void smp4d_cross_call_irq(void);
void smp4d_percpu_timer_interrupt(struct pt_regs *regs);
/* leon_smp.c */
void leon_cpu_pre_starting(void *arg);
void leon_cpu_pre_online(void *arg);
void leonsmp_ipi_interrupt(void);
void leon_cross_call_irq(void);
/* head_32.S */
extern unsigned int t_nmi[];
extern unsigned int linux_trap_ipi15_sun4d[];
extern unsigned int linux_trap_ipi15_sun4m[];
extern struct tt_entry trapbase;
extern struct tt_entry trapbase_cpu1;
extern struct tt_entry trapbase_cpu2;
extern struct tt_entry trapbase_cpu3;
extern char cputypval[];
/* entry.S */
extern unsigned long lvl14_save[4];
extern unsigned int real_irq_entry[];
extern unsigned int smp4d_ticker[];
extern unsigned int patchme_maybe_smp_msg[];
void floppy_hardint(void);
/* trampoline_32.S */
extern unsigned long sun4m_cpu_startup;
extern unsigned long sun4d_cpu_startup;
/* process_32.c */
asmlinkage int sparc_do_fork(unsigned long clone_flags,
unsigned long stack_start,
struct pt_regs *regs,
unsigned long stack_size);
/* signal_32.c */
asmlinkage void do_sigreturn(struct pt_regs *regs);
asmlinkage void do_rt_sigreturn(struct pt_regs *regs);
void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0,
unsigned long thread_info_flags);
asmlinkage int do_sys_sigstack(struct sigstack __user *ssptr,
struct sigstack __user *ossptr,
unsigned long sp);
/* ptrace_32.c */
asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p);
/* unaligned_32.c */
asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn);
asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn);
/* windows.c */
void try_to_clear_window_buffer(struct pt_regs *regs, int who);
/* auxio_32.c */
void __init auxio_probe(void);
void __init auxio_power_probe(void);
/* pcic.c */
extern void __iomem *pcic_regs;
void pcic_nmi(unsigned int pend, struct pt_regs *regs);
/* time_32.c */
void __init time_init(void);
#else /* CONFIG_SPARC32 */
#endif /* CONFIG_SPARC32 */
#endif /* !(__SPARC_KERNEL_H) */