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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 */
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
typedef unsigned long long u64;
typedef unsigned long ulong;
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
#ifndef EIO
#define EIO 1
#endif
#ifndef EBUSY
#define EBUSY 2
#endif
#ifndef NULL
#define NULL 0
#endif
#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);
void consume_sclp_int(void);
void consume_io_int(void);
/* main.c */
void panic(const char *string);
void write_subsystem_identification(void);
extern char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
unsigned int get_loadparm_index(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(ulong rec_list1, ulong rec_list2,
ulong subchan_id, void *load_addr);
bool virtio_is_supported(SubChannelId schid);
void virtio_blk_setup_device(SubChannelId schid);
int virtio_read(ulong sector, void *load_addr);
u64 get_clock(void);
ulong get_second(void);
/* bootmap.c */
void zipl_load(void);
/* jump2ipl.c */
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
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 print_int(const char *desc, u64 addr)
{
char out[] = ": 0xffffffffffffffff\n";
fill_hex_val(&out[4], &addr, sizeof(addr));
sclp_print(desc);
sclp_print(out);
}
static inline void debug_print_int(const char *desc, u64 addr)
{
#ifdef DEBUG
print_int(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
static inline void yield(void)
{
asm volatile ("diag 0,0,0x44"
: :
: "memory", "cc");
}
#define MAX_SECTOR_SIZE 4096
static inline void sleep(unsigned int seconds)
{
ulong target = get_second() + seconds;
while (get_second() < target) {
yield();
}
}
static inline void IPL_assert(bool term, const char *message)
{
if (!term) {
sclp_print("\n! ");
sclp_print(message);
panic(" !\n"); /* no return */
}
}
static inline void IPL_check(bool term, const char *message)
{
if (!term) {
sclp_print("\n! WARNING: ");
sclp_print(message);
sclp_print(" !\n");
}
}
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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