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/*
* S390 CCW boot loader
*
* Copyright (c) 2013 Alexander Graf <agraf@suse.de>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#ifndef S390_CCW_H
#define S390_CCW_H
/* #define DEBUG */
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
typedef unsigned long long u64;
#define true 1
#define false 0
#define PAGE_SIZE 4096
#define EIO 1
#define EBUSY 2
#define ENODEV 3
#ifndef MIN
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#endif
#ifndef MIN_NON_ZERO
#define MIN_NON_ZERO(a, b) ((a) == 0 ? (b) : \
((b) == 0 ? (a) : (MIN(a, b))))
#endif
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
#include "cio.h"
#include "iplb.h"
/* start.s */
void disabled_wait(void) __attribute__ ((__noreturn__));
void consume_sclp_int(void);
void consume_io_int(void);
/* main.c */
void write_subsystem_identification(void);
void write_iplb_location(void);
unsigned int get_loadparm_index(void);
void main(void);
/* sclp.c */
void sclp_print(const char *string);
void sclp_set_write_mask(uint32_t receive_mask, uint32_t send_mask);
void sclp_setup(void);
void sclp_get_loadparm_ascii(char *loadparm);
int sclp_read(char *str, size_t count);
/* virtio.c */
unsigned long virtio_load_direct(unsigned long rec_list1, unsigned long rec_list2,
unsigned long subchan_id, void *load_addr);
bool virtio_is_supported(SubChannelId schid);
int virtio_blk_setup_device(SubChannelId schid);
int virtio_read(unsigned long sector, void *load_addr);
/* bootmap.c */
void zipl_load(void);
/* jump2ipl.c */
void write_reset_psw(uint64_t psw);
void jump_to_IPL_code(uint64_t address);
void jump_to_low_kernel(void);
/* menu.c */
void menu_set_parms(uint8_t boot_menu_flag, uint32_t boot_menu_timeout);
int menu_get_zipl_boot_index(const char *menu_data);
bool menu_is_enabled_zipl(void);
int menu_get_enum_boot_index(bool *valid_entries);
bool menu_is_enabled_enum(void);
#define MAX_BOOT_ENTRIES 31
__attribute__ ((__noreturn__))
static inline void panic(const char *string)
{
printf("ERROR: %s\n ", string);
disabled_wait();
}
static inline void fill_hex(char *out, unsigned char val)
{
const char hex[] = "0123456789abcdef";
out[0] = hex[(val >> 4) & 0xf];
out[1] = hex[val & 0xf];
}
static inline void fill_hex_val(char *out, void *ptr, unsigned size)
{
unsigned char *value = ptr;
unsigned int i;
for (i = 0; i < size; i++) {
fill_hex(&out[i*2], value[i]);
}
}
static inline void debug_print_int(const char *desc, u64 addr)
{
#ifdef DEBUG
printf("%s 0x%X\n", desc, addr);
#endif
}
static inline void debug_print_addr(const char *desc, void *p)
{
#ifdef DEBUG
debug_print_int(desc, (unsigned int)(unsigned long)p);
#endif
}
/***********************************************
* Hypercall functions *
***********************************************/
#define KVM_S390_VIRTIO_NOTIFY 0
#define KVM_S390_VIRTIO_RESET 1
#define KVM_S390_VIRTIO_SET_STATUS 2
#define KVM_S390_VIRTIO_CCW_NOTIFY 3
#define MAX_SECTOR_SIZE 4096
static inline void IPL_assert(bool term, const char *message)
{
if (!term) {
panic(message); /* no return */
}
}
static inline void IPL_check(bool term, const char *message)
{
if (!term) {
printf("WARNING: %s\n", message);
}
}
extern const unsigned char ebc2asc[256];
static inline void ebcdic_to_ascii(const char *src,
char *dst,
unsigned int size)
{
unsigned int i;
for (i = 0; i < size; i++) {
unsigned c = src[i];
dst[i] = ebc2asc[c];
}
}
#endif /* S390_CCW_H */
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