c8cda8748e
We now take the subchannel set id also into account to find the boot device. If we want to use a subchannel set other than the default set 0, we first need to enable the mss facility. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
136 lines
2.8 KiB
C
136 lines
2.8 KiB
C
/*
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* S390 CCW boot loader
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*
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* Copyright (c) 2013 Alexander Graf <agraf@suse.de>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#ifndef S390_CCW_H
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#define S390_CCW_H
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/* #define DEBUG */
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typedef unsigned char u8;
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typedef unsigned short u16;
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typedef unsigned int u32;
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typedef unsigned long long u64;
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typedef unsigned long ulong;
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typedef long size_t;
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typedef int bool;
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typedef unsigned char uint8_t;
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typedef unsigned short uint16_t;
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typedef unsigned int uint32_t;
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typedef unsigned long long uint64_t;
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typedef unsigned char __u8;
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typedef unsigned short __u16;
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typedef unsigned int __u32;
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typedef unsigned long long __u64;
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#define true 1
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#define false 0
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#define PAGE_SIZE 4096
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#ifndef EIO
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#define EIO 1
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#endif
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#ifndef EBUSY
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#define EBUSY 2
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#endif
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#ifndef NULL
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#define NULL 0
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#endif
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#include "cio.h"
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/* start.s */
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void disabled_wait(void);
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/* main.c */
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void virtio_panic(const char *string);
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/* sclp-ascii.c */
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void sclp_print(const char *string);
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void sclp_setup(void);
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/* virtio.c */
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unsigned long virtio_load_direct(ulong rec_list1, ulong rec_list2,
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ulong subchan_id, void *load_addr);
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bool virtio_is_blk(struct subchannel_id schid);
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void virtio_setup_block(struct subchannel_id schid);
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int virtio_read(ulong sector, void *load_addr);
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int enable_mss_facility(void);
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/* bootmap.c */
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int zipl_load(void);
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static inline void *memset(void *s, int c, size_t n)
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{
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int i;
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unsigned char *p = s;
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for (i = 0; i < n; i++) {
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p[i] = c;
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}
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return s;
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}
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static inline void fill_hex(char *out, unsigned char val)
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{
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const char hex[] = "0123456789abcdef";
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out[0] = hex[(val >> 4) & 0xf];
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out[1] = hex[val & 0xf];
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}
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static inline void print_int(const char *desc, u64 addr)
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{
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unsigned char *addr_c = (unsigned char*)&addr;
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char out[] = ": 0xffffffffffffffff\n";
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unsigned int i;
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for (i = 0; i < sizeof(addr); i++) {
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fill_hex(&out[4 + (i*2)], addr_c[i]);
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}
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sclp_print(desc);
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sclp_print(out);
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}
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static inline void debug_print_int(const char *desc, u64 addr)
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{
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#ifdef DEBUG
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print_int(desc, addr);
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#endif
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}
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static inline void debug_print_addr(const char *desc, void *p)
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{
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#ifdef DEBUG
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debug_print_int(desc, (unsigned int)(unsigned long)p);
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#endif
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}
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/***********************************************
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* Hypercall functions *
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***********************************************/
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#define KVM_S390_VIRTIO_NOTIFY 0
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#define KVM_S390_VIRTIO_RESET 1
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#define KVM_S390_VIRTIO_SET_STATUS 2
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#define KVM_S390_VIRTIO_CCW_NOTIFY 3
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static inline void yield(void)
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{
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asm volatile ("diag 0,0,0x44"
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: :
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: "memory", "cc");
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}
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#define SECTOR_SIZE 512
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#endif /* S390_CCW_H */
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