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setup.h

/*
 *  include/asm-s390/setup.h
 *
 *  S390 version
 *    Copyright IBM Corp. 1999,2006
 */

#ifndef _ASM_S390_SETUP_H
#define _ASM_S390_SETUP_H

#define COMMAND_LINE_SIZE     1024

#define ARCH_COMMAND_LINE_SIZE      896

#ifdef __KERNEL__

#include <asm/types.h>

#define PARMAREA        0x10400
#define MEMORY_CHUNKS         256

#ifndef __ASSEMBLY__

#ifndef __s390x__
#define IPL_DEVICE        (*(unsigned long *)  (0x10404))
#define INITRD_START      (*(unsigned long *)  (0x1040C))
#define INITRD_SIZE       (*(unsigned long *)  (0x10414))
#else /* __s390x__ */
#define IPL_DEVICE        (*(unsigned long *)  (0x10400))
#define INITRD_START      (*(unsigned long *)  (0x10408))
#define INITRD_SIZE       (*(unsigned long *)  (0x10410))
#endif /* __s390x__ */
#define COMMAND_LINE      ((char *)            (0x10480))

#define CHUNK_READ_WRITE 0
#define CHUNK_READ_ONLY  1

struct mem_chunk {
      unsigned long addr;
      unsigned long size;
      int type;
};

extern struct mem_chunk memory_chunk[];
extern unsigned long real_memory_size;

void detect_memory_layout(struct mem_chunk chunk[]);

#ifdef CONFIG_S390_SWITCH_AMODE
extern unsigned int switch_amode;
#else
#define switch_amode    (0)
#endif

#ifdef CONFIG_S390_EXEC_PROTECT
extern unsigned int s390_noexec;
#else
#define s390_noexec     (0)
#endif

/*
 * Machine features detected in head.S
 */
extern unsigned long machine_flags;

#define MACHINE_FLAG_VM       (1UL << 0)
#define MACHINE_FLAG_IEEE     (1UL << 1)
#define MACHINE_FLAG_CSP      (1UL << 3)
#define MACHINE_FLAG_MVPG     (1UL << 4)
#define MACHINE_FLAG_DIAG44   (1UL << 5)
#define MACHINE_FLAG_IDTE     (1UL << 6)
#define MACHINE_FLAG_DIAG9C   (1UL << 7)
#define MACHINE_FLAG_MVCOS    (1UL << 8)
#define MACHINE_FLAG_KVM      (1UL << 9)
#define MACHINE_FLAG_HPAGE    (1UL << 10)
#define MACHINE_FLAG_PFMF     (1UL << 11)

#define MACHINE_IS_VM         (machine_flags & MACHINE_FLAG_VM)
#define MACHINE_IS_KVM        (machine_flags & MACHINE_FLAG_KVM)
#define MACHINE_HAS_DIAG9C    (machine_flags & MACHINE_FLAG_DIAG9C)

#ifndef __s390x__
#define MACHINE_HAS_IEEE      (machine_flags & MACHINE_FLAG_IEEE)
#define MACHINE_HAS_CSP       (machine_flags & MACHINE_FLAG_CSP)
#define MACHINE_HAS_IDTE      (0)
#define MACHINE_HAS_DIAG44    (1)
#define MACHINE_HAS_MVPG      (machine_flags & MACHINE_FLAG_MVPG)
#define MACHINE_HAS_MVCOS     (0)
#define MACHINE_HAS_HPAGE     (0)
#define MACHINE_HAS_PFMF      (0)
#else /* __s390x__ */
#define MACHINE_HAS_IEEE      (1)
#define MACHINE_HAS_CSP       (1)
#define MACHINE_HAS_IDTE      (machine_flags & MACHINE_FLAG_IDTE)
#define MACHINE_HAS_DIAG44    (machine_flags & MACHINE_FLAG_DIAG44)
#define MACHINE_HAS_MVPG      (1)
#define MACHINE_HAS_MVCOS     (machine_flags & MACHINE_FLAG_MVCOS)
#define MACHINE_HAS_HPAGE     (machine_flags & MACHINE_FLAG_HPAGE)
#define MACHINE_HAS_PFMF      (machine_flags & MACHINE_FLAG_PFMF)
#endif /* __s390x__ */

#define ZFCPDUMP_HSA_SIZE     (32UL<<20)

/*
 * Console mode. Override with conmode=
 */
extern unsigned int console_mode;
extern unsigned int console_devno;
extern unsigned int console_irq;

extern char vmhalt_cmd[];
extern char vmpoff_cmd[];

#define CONSOLE_IS_UNDEFINED  (console_mode == 0)
#define CONSOLE_IS_SCLP       (console_mode == 1)
#define CONSOLE_IS_3215       (console_mode == 2)
#define CONSOLE_IS_3270       (console_mode == 3)
#define SET_CONSOLE_SCLP      do { console_mode = 1; } while (0)
#define SET_CONSOLE_3215      do { console_mode = 2; } while (0)
#define SET_CONSOLE_3270      do { console_mode = 3; } while (0)

#define NSS_NAME_SIZE   8
extern char kernel_nss_name[];

#else /* __ASSEMBLY__ */

#ifndef __s390x__
#define IPL_DEVICE        0x10404
#define INITRD_START      0x1040C
#define INITRD_SIZE       0x10414
#else /* __s390x__ */
#define IPL_DEVICE        0x10400
#define INITRD_START      0x10408
#define INITRD_SIZE       0x10410
#endif /* __s390x__ */
#define COMMAND_LINE      0x10480

#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_S390_SETUP_H */

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