83abeffbd5
Various functions in entry.S perform test-under-mask instructions to test for particular bits in memory. Because test-under-mask uses a mask value of one byte, the mask value and the offset into the memory must be calculated manually. This easily introduces errors and is hard to review and read. Introduce the TSTMSK assembler macro to specify a mask constant and let the macro calculate the offset and the byte mask to generate a test-under-mask instruction. The benefit is that existing symbolic constants can now be used for tests. Also the macro checks for zero mask values and mask values that consist of multiple bytes. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
121 lines
3.8 KiB
C
121 lines
3.8 KiB
C
/*
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* S390 version
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* Copyright IBM Corp. 1999, 2010
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*/
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#ifndef _ASM_S390_SETUP_H
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#define _ASM_S390_SETUP_H
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#include <linux/const.h>
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#include <uapi/asm/setup.h>
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#define PARMAREA 0x10400
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/*
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* Machine features detected in head.S
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*/
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#define MACHINE_FLAG_VM _BITUL(0)
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#define MACHINE_FLAG_IEEE _BITUL(1)
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#define MACHINE_FLAG_CSP _BITUL(2)
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#define MACHINE_FLAG_MVPG _BITUL(3)
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#define MACHINE_FLAG_DIAG44 _BITUL(4)
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#define MACHINE_FLAG_IDTE _BITUL(5)
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#define MACHINE_FLAG_DIAG9C _BITUL(6)
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#define MACHINE_FLAG_KVM _BITUL(8)
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#define MACHINE_FLAG_ESOP _BITUL(9)
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#define MACHINE_FLAG_EDAT1 _BITUL(10)
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#define MACHINE_FLAG_EDAT2 _BITUL(11)
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#define MACHINE_FLAG_LPAR _BITUL(12)
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#define MACHINE_FLAG_LPP _BITUL(13)
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#define MACHINE_FLAG_TOPOLOGY _BITUL(14)
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#define MACHINE_FLAG_TE _BITUL(15)
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#define MACHINE_FLAG_TLB_LC _BITUL(17)
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#define MACHINE_FLAG_VX _BITUL(18)
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#define MACHINE_FLAG_CAD _BITUL(19)
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#ifndef __ASSEMBLY__
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#include <asm/lowcore.h>
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#include <asm/types.h>
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#define IPL_DEVICE (*(unsigned long *) (0x10400))
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#define INITRD_START (*(unsigned long *) (0x10408))
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#define INITRD_SIZE (*(unsigned long *) (0x10410))
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#define OLDMEM_BASE (*(unsigned long *) (0x10418))
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#define OLDMEM_SIZE (*(unsigned long *) (0x10420))
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#define COMMAND_LINE ((char *) (0x10480))
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extern int memory_end_set;
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extern unsigned long memory_end;
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extern unsigned long max_physmem_end;
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extern void detect_memory_memblock(void);
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#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
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#define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
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#define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
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#define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
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#define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
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#define MACHINE_HAS_PFMF MACHINE_HAS_EDAT1
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#define MACHINE_HAS_HPAGE MACHINE_HAS_EDAT1
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#define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
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#define MACHINE_HAS_DIAG44 (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
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#define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
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#define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
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#define MACHINE_HAS_LPP (S390_lowcore.machine_flags & MACHINE_FLAG_LPP)
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#define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
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#define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
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#define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
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#define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
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#define MACHINE_HAS_CAD (S390_lowcore.machine_flags & MACHINE_FLAG_CAD)
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/*
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* Console mode. Override with conmode=
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*/
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extern unsigned int console_mode;
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extern unsigned int console_devno;
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extern unsigned int console_irq;
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extern char vmhalt_cmd[];
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extern char vmpoff_cmd[];
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#define CONSOLE_IS_UNDEFINED (console_mode == 0)
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#define CONSOLE_IS_SCLP (console_mode == 1)
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#define CONSOLE_IS_3215 (console_mode == 2)
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#define CONSOLE_IS_3270 (console_mode == 3)
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#define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
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#define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
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#define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
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#define NSS_NAME_SIZE 8
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extern char kernel_nss_name[];
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#ifdef CONFIG_PFAULT
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extern int pfault_init(void);
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extern void pfault_fini(void);
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#else /* CONFIG_PFAULT */
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#define pfault_init() ({-1;})
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#define pfault_fini() do { } while (0)
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#endif /* CONFIG_PFAULT */
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extern void cmma_init(void);
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extern void (*_machine_restart)(char *command);
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extern void (*_machine_halt)(void);
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extern void (*_machine_power_off)(void);
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#else /* __ASSEMBLY__ */
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#define IPL_DEVICE 0x10400
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#define INITRD_START 0x10408
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#define INITRD_SIZE 0x10410
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#define OLDMEM_BASE 0x10418
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#define OLDMEM_SIZE 0x10420
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#define COMMAND_LINE 0x10480
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_S390_SETUP_H */
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