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      1 /* $NetBSD: machdep.h,v 1.36 2022/04/02 11:16:07 skrll Exp $ */
      2 
      3 #ifndef _ARM32_MACHDEP_H_
      4 #define _ARM32_MACHDEP_H_
      5 
      6 #ifdef _KERNEL
      7 
      8 #define INIT_ARM_STACK_SHIFT	12
      9 #define INIT_ARM_STACK_SIZE	(1 << INIT_ARM_STACK_SHIFT)
     10 #define INIT_ARM_TOTAL_STACK	(INIT_ARM_STACK_SIZE * MAXCPUS)
     11 
     12 /* Define various stack sizes in pages */
     13 #ifndef IRQ_STACK_SIZE
     14 #define IRQ_STACK_SIZE	1
     15 #endif
     16 #ifndef ABT_STACK_SIZE
     17 #define ABT_STACK_SIZE	1
     18 #endif
     19 #ifndef UND_STACK_SIZE
     20 #define UND_STACK_SIZE	1
     21 #endif
     22 #ifndef FIQ_STACK_SIZE
     23 #define FIQ_STACK_SIZE	1
     24 #endif
     25 
     26 extern void (*cpu_reset_address)(void);
     27 extern paddr_t cpu_reset_address_paddr;
     28 
     29 extern void (*cpu_powerdown_address)(void);
     30 
     31 extern u_int data_abort_handler_address;
     32 extern u_int prefetch_abort_handler_address;
     33 // extern u_int undefined_handler_address;
     34 #define	undefined_handler_address (curcpu()->ci_undefsave[2])
     35 
     36 struct bootmem_info {
     37 	paddr_t bmi_start;
     38 	paddr_t bmi_kernelstart;
     39 	paddr_t bmi_kernelend;
     40 	paddr_t bmi_end;
     41 	pv_addrqh_t bmi_freechunks;
     42 	pv_addrqh_t bmi_chunks;		/* sorted list of memory to be mapped */
     43 	pv_addr_t bmi_freeblocks[4];
     44 	/*
     45 	 * These need to be static for pmap's kernel_pt list.
     46 	 */
     47 	pv_addr_t bmi_vector_l2pt;
     48 	pv_addr_t bmi_io_l2pt;
     49 	pv_addr_t bmi_l2pts[32];	// for large memory disks.
     50 	u_int bmi_freepages;
     51 	u_int bmi_nfreeblocks;
     52 };
     53 
     54 extern struct bootmem_info bootmem_info;
     55 
     56 extern char *booted_kernel;
     57 extern u_long kern_vtopdiff;
     58 
     59 /* misc prototypes used by the many arm machdeps */
     60 void cortex_pmc_ccnt_init(void);
     61 void cpu_hatch(struct cpu_info *, u_int, void (*)(struct cpu_info *));
     62 void halt(void);
     63 void parse_mi_bootargs(char *);
     64 void data_abort_handler(trapframe_t *);
     65 void prefetch_abort_handler(trapframe_t *);
     66 void undefinedinstruction_bounce(trapframe_t *);
     67 void dumpsys(void);
     68 
     69 /*
     70  * note that we use void * as all the platforms have different ideas on what
     71  * the structure is
     72  */
     73 vaddr_t initarm(void *);
     74 struct pmap_devmap;
     75 struct boot_physmem;
     76 
     77 void cpu_startup_hook(void);
     78 void cpu_startup_default(void);
     79 
     80 static inline paddr_t
     81 aarch32_kern_vtophys(vaddr_t va)
     82 {
     83 	return va - kern_vtopdiff;
     84 }
     85 
     86 static inline vaddr_t
     87 aarch32_kern_phystov(paddr_t pa)
     88 {
     89 	return pa + kern_vtopdiff;
     90 }
     91 
     92 #define KERN_VTOPHYS(va)	aarch32_kern_vtophys(va)
     93 #define KERN_PHYSTOV(pa)	aarch32_kern_phystov(pa)
     94 
     95 void cpu_kernel_vm_init(paddr_t, psize_t);
     96 
     97 void arm32_bootmem_init(paddr_t memstart, psize_t memsize, paddr_t kernelstart);
     98 void arm32_kernel_vm_init(vaddr_t kvm_base, vaddr_t vectors,
     99 	vaddr_t iovbase /* (can be zero) */,
    100 	const struct pmap_devmap *devmap, bool mapallmem_p);
    101 vaddr_t initarm_common(vaddr_t kvm_base, vsize_t kvm_size,
    102         const struct boot_physmem *bp, size_t nbp);
    103 
    104 void uartputc(int);
    105 
    106 /* from arm/arm32/intr.c */
    107 void dosoftints(void);
    108 void set_spl_masks(void);
    109 #ifdef DIAGNOSTIC
    110 void dump_spl_masks(void);
    111 #endif
    112 
    113 /* cpu_onfault */
    114 int cpu_set_onfault(struct faultbuf *) __returns_twice;
    115 void cpu_jump_onfault(struct trapframe *, const struct faultbuf *, int);
    116 
    117 static inline void
    118 cpu_unset_onfault(void)
    119 {
    120 	curpcb->pcb_onfault = NULL;
    121 }
    122 
    123 static inline void
    124 cpu_enable_onfault(struct faultbuf *fb)
    125 {
    126 	curpcb->pcb_onfault = fb;
    127 }
    128 
    129 static inline struct faultbuf *
    130 cpu_disable_onfault(void)
    131 {
    132 	struct faultbuf * const fb = curpcb->pcb_onfault;
    133 	if (fb != NULL)
    134 		curpcb->pcb_onfault = NULL;
    135 	return fb;
    136 }
    137 
    138 #endif	/* _KERNEL */
    139 
    140 #endif	/* _ARM32_MACHDEP_H_ */
    141