u-boot/arch/sparc/include/asm/prom.h

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/* OpenProm defines mainly taken from linux kernel header files
*
* openprom.h: Prom structures and defines for access to the OPENBOOT
* prom routines and data areas.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 2007 Daniel Hellstrom (daniel@gaisler.com)
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __SPARC_OPENPROM_H__
#define __SPARC_OPENPROM_H__
/* Empirical constants... */
#define LINUX_OPPROM_MAGIC 0x10010407
#ifndef __ASSEMBLY__
/* V0 prom device operations. */
struct linux_dev_v0_funcs {
int (*v0_devopen) (char *device_str);
int (*v0_devclose) (int dev_desc);
int (*v0_rdblkdev) (int dev_desc, int num_blks, int blk_st, char *buf);
int (*v0_wrblkdev) (int dev_desc, int num_blks, int blk_st, char *buf);
int (*v0_wrnetdev) (int dev_desc, int num_bytes, char *buf);
int (*v0_rdnetdev) (int dev_desc, int num_bytes, char *buf);
int (*v0_rdchardev) (int dev_desc, int num_bytes, int dummy, char *buf);
int (*v0_wrchardev) (int dev_desc, int num_bytes, int dummy, char *buf);
int (*v0_seekdev) (int dev_desc, long logical_offst, int from);
};
/* V2 and later prom device operations. */
struct linux_dev_v2_funcs {
int (*v2_inst2pkg) (int d); /* Convert ihandle to phandle */
char *(*v2_dumb_mem_alloc) (char *va, unsigned sz);
void (*v2_dumb_mem_free) (char *va, unsigned sz);
/* To map devices into virtual I/O space. */
char *(*v2_dumb_mmap) (char *virta, int which_io, unsigned paddr,
unsigned sz);
void (*v2_dumb_munmap) (char *virta, unsigned size);
int (*v2_dev_open) (char *devpath);
void (*v2_dev_close) (int d);
int (*v2_dev_read) (int d, char *buf, int nbytes);
int (*v2_dev_write) (int d, char *buf, int nbytes);
int (*v2_dev_seek) (int d, int hi, int lo);
/* Never issued (multistage load support) */
void (*v2_wheee2) (void);
void (*v2_wheee3) (void);
};
struct linux_mlist_v0 {
struct linux_mlist_v0 *theres_more;
char *start_adr;
unsigned num_bytes;
};
struct linux_mem_v0 {
struct linux_mlist_v0 **v0_totphys;
struct linux_mlist_v0 **v0_prommap;
struct linux_mlist_v0 **v0_available; /* What we can use */
};
/* Arguments sent to the kernel from the boot prompt. */
struct linux_arguments_v0 {
char * const argv[8];
char args[100];
char boot_dev[2];
int boot_dev_ctrl;
int boot_dev_unit;
int dev_partition;
char *kernel_file_name;
void *aieee1; /* XXX */
};
/* V2 and up boot things. */
struct linux_bootargs_v2 {
char **bootpath;
char **bootargs;
int *fd_stdin;
int *fd_stdout;
};
/* The top level PROM vector. */
struct linux_romvec {
/* Version numbers. */
unsigned int pv_magic_cookie;
unsigned int pv_romvers;
unsigned int pv_plugin_revision;
unsigned int pv_printrev;
/* Version 0 memory descriptors. */
struct linux_mem_v0 pv_v0mem;
/* Node operations. */
struct linux_nodeops *pv_nodeops;
char **pv_bootstr;
struct linux_dev_v0_funcs pv_v0devops;
char *pv_stdin;
char *pv_stdout;
#define PROMDEV_KBD 0 /* input from keyboard */
#define PROMDEV_SCREEN 0 /* output to screen */
#define PROMDEV_TTYA 1 /* in/out to ttya */
#define PROMDEV_TTYB 2 /* in/out to ttyb */
/* Blocking getchar/putchar. NOT REENTRANT! (grr) */
int (*pv_getchar) (void);
void (*pv_putchar) (int ch);
/* Non-blocking variants. */
int (*pv_nbgetchar) (void);
int (*pv_nbputchar) (int ch);
void (*pv_putstr) (char *str, int len);
/* Miscellany. */
void (*pv_reboot) (char *bootstr);
void (*pv_printf) (__const__ char *fmt, ...);
void (*pv_abort) (void);
__volatile__ int *pv_ticks;
void (*pv_halt) (void);
void (**pv_synchook) (void);
/* Evaluate a forth string, not different proto for V0 and V2->up. */
union {
void (*v0_eval) (int len, char *str);
void (*v2_eval) (char *str);
} pv_fortheval;
struct linux_arguments_v0 **pv_v0bootargs;
/* Get ether address. */
unsigned int (*pv_enaddr) (int d, char *enaddr);
struct linux_bootargs_v2 pv_v2bootargs;
struct linux_dev_v2_funcs pv_v2devops;
int filler[15];
/* This one is sun4c/sun4 only. */
void (*pv_setctxt) (int ctxt, char *va, int pmeg);
/* Prom version 3 Multiprocessor routines. This stuff is crazy.
* No joke. Calling these when there is only one cpu probably
* crashes the machine, have to test this. :-)
*/
/* v3_cpustart() will start the cpu 'whichcpu' in mmu-context
* 'thiscontext' executing at address 'prog_counter'
*/
int (*v3_cpustart) (unsigned int whichcpu, int ctxtbl_ptr,
int thiscontext, char *prog_counter);
/* v3_cpustop() will cause cpu 'whichcpu' to stop executing
* until a resume cpu call is made.
*/
int (*v3_cpustop) (unsigned int whichcpu);
/* v3_cpuidle() will idle cpu 'whichcpu' until a stop or
* resume cpu call is made.
*/
int (*v3_cpuidle) (unsigned int whichcpu);
/* v3_cpuresume() will resume processor 'whichcpu' executing
* starting with whatever 'pc' and 'npc' were left at the
* last 'idle' or 'stop' call.
*/
int (*v3_cpuresume) (unsigned int whichcpu);
};
/* Routines for traversing the prom device tree. */
struct linux_nodeops {
int (*no_nextnode) (int node);
int (*no_child) (int node);
int (*no_proplen) (int node, char *name);
int (*no_getprop) (int node, char *name, char *val);
int (*no_setprop) (int node, char *name, char *val, int len);
char *(*no_nextprop) (int node, char *name);
};
/* More fun PROM structures for device probing. */
#define PROMREG_MAX 16
#define PROMVADDR_MAX 16
#define PROMINTR_MAX 15
struct linux_prom_registers {
unsigned int which_io; /* is this in OBIO space? */
unsigned int phys_addr; /* The physical address of this register */
unsigned int reg_size; /* How many bytes does this register take up? */
};
struct linux_prom_irqs {
int pri; /* IRQ priority */
int vector; /* This is foobar, what does it do? */
};
/* Element of the "ranges" vector */
struct linux_prom_ranges {
unsigned int ot_child_space;
unsigned int ot_child_base; /* Bus feels this */
unsigned int ot_parent_space;
unsigned int ot_parent_base; /* CPU looks from here */
unsigned int or_size;
};
/* Ranges and reg properties are a bit different for PCI. */
struct linux_prom_pci_registers {
/*
* We don't know what information this field contain.
* We guess, PCI device function is in bits 15:8
* So, ...
*/
unsigned int which_io; /* Let it be which_io */
unsigned int phys_hi;
unsigned int phys_lo;
unsigned int size_hi;
unsigned int size_lo;
};
struct linux_prom_pci_ranges {
unsigned int child_phys_hi; /* Only certain bits are encoded here. */
unsigned int child_phys_mid;
unsigned int child_phys_lo;
unsigned int parent_phys_hi;
unsigned int parent_phys_lo;
unsigned int size_hi;
unsigned int size_lo;
};
struct linux_prom_pci_assigned_addresses {
unsigned int which_io;
unsigned int phys_hi;
unsigned int phys_lo;
unsigned int size_hi;
unsigned int size_lo;
};
struct linux_prom_ebus_ranges {
unsigned int child_phys_hi;
unsigned int child_phys_lo;
unsigned int parent_phys_hi;
unsigned int parent_phys_mid;
unsigned int parent_phys_lo;
unsigned int size;
};
/* Offset into the EEPROM where the id PROM is located on the 4c */
#define IDPROM_OFFSET 0x7d8
/* On sun4m; physical. */
/* MicroSPARC(-II) does not decode 31rd bit, but it works. */
#define IDPROM_OFFSET_M 0xfd8
struct idprom {
unsigned char id_format; /* Format identifier (always 0x01) */
unsigned char id_machtype; /* Machine type */
unsigned char id_ethaddr[6]; /* Hardware ethernet address */
long id_date; /* Date of manufacture */
unsigned int id_sernum:24; /* Unique serial number */
unsigned char id_cksum; /* Checksum - xor of the data bytes */
unsigned char reserved[16];
};
extern struct idprom *idprom;
extern void idprom_init(void);
#define IDPROM_SIZE (sizeof(struct idprom))
#endif /* !(__ASSEMBLY__) */
#endif