170 lines
5.2 KiB
C
170 lines
5.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* S390 version
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* Copyright IBM Corp. 1999, 2017
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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/bits.h>
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#include <uapi/asm/setup.h>
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#include <linux/build_bug.h>
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#define PARMAREA 0x10400
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#define COMMAND_LINE_SIZE CONFIG_COMMAND_LINE_SIZE
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/*
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* Machine features detected in early.c
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*/
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#define MACHINE_FLAG_VM BIT(0)
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#define MACHINE_FLAG_KVM BIT(1)
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#define MACHINE_FLAG_LPAR BIT(2)
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#define MACHINE_FLAG_DIAG9C BIT(3)
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#define MACHINE_FLAG_ESOP BIT(4)
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#define MACHINE_FLAG_IDTE BIT(5)
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#define MACHINE_FLAG_EDAT1 BIT(7)
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#define MACHINE_FLAG_EDAT2 BIT(8)
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#define MACHINE_FLAG_TOPOLOGY BIT(10)
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#define MACHINE_FLAG_TE BIT(11)
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#define MACHINE_FLAG_TLB_LC BIT(12)
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#define MACHINE_FLAG_VX BIT(13)
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#define MACHINE_FLAG_TLB_GUEST BIT(14)
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#define MACHINE_FLAG_NX BIT(15)
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#define MACHINE_FLAG_GS BIT(16)
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#define MACHINE_FLAG_SCC BIT(17)
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#define MACHINE_FLAG_PCI_MIO BIT(18)
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#define MACHINE_FLAG_RDP BIT(19)
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#define LPP_MAGIC BIT(31)
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#define LPP_PID_MASK _AC(0xffffffff, UL)
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/* Offsets to entry points in kernel/head.S */
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#define STARTUP_NORMAL_OFFSET 0x10000
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#define STARTUP_KDUMP_OFFSET 0x10010
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#define LEGACY_COMMAND_LINE_SIZE 896
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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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struct parmarea {
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unsigned long ipl_device; /* 0x10400 */
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unsigned long initrd_start; /* 0x10408 */
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unsigned long initrd_size; /* 0x10410 */
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unsigned long oldmem_base; /* 0x10418 */
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unsigned long oldmem_size; /* 0x10420 */
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unsigned long kernel_version; /* 0x10428 */
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unsigned long max_command_line_size; /* 0x10430 */
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char pad1[0x10480-0x10438]; /* 0x10438 - 0x10480 */
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char command_line[COMMAND_LINE_SIZE]; /* 0x10480 */
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};
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extern struct parmarea parmarea;
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extern unsigned int zlib_dfltcc_support;
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#define ZLIB_DFLTCC_DISABLED 0
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#define ZLIB_DFLTCC_FULL 1
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#define ZLIB_DFLTCC_DEFLATE_ONLY 2
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#define ZLIB_DFLTCC_INFLATE_ONLY 3
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#define ZLIB_DFLTCC_FULL_DEBUG 4
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extern int noexec_disabled;
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extern unsigned long ident_map_size;
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/* The Write Back bit position in the physaddr is given by the SLPC PCI */
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extern unsigned long mio_wb_bit_mask;
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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_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
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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_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_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
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#define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
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#define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
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#define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
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#define MACHINE_HAS_PCI_MIO (S390_lowcore.machine_flags & MACHINE_FLAG_PCI_MIO)
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#define MACHINE_HAS_RDP (S390_lowcore.machine_flags & MACHINE_FLAG_RDP)
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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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#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 CONSOLE_IS_VT220 (console_mode == 4)
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#define CONSOLE_IS_HVC (console_mode == 5)
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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 SET_CONSOLE_VT220 do { console_mode = 4; } while (0)
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#define SET_CONSOLE_HVC do { console_mode = 5; } while (0)
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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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#ifdef CONFIG_VMCP
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void vmcp_cma_reserve(void);
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#else
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static inline void vmcp_cma_reserve(void) { }
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#endif
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void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
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void cmma_init(void);
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void cmma_init_nodat(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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extern unsigned long __kaslr_offset;
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static inline unsigned long kaslr_offset(void)
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{
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return __kaslr_offset;
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}
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extern int __kaslr_enabled;
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static inline int kaslr_enabled(void)
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{
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if (IS_ENABLED(CONFIG_RANDOMIZE_BASE))
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return __kaslr_enabled;
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return 0;
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}
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struct oldmem_data {
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unsigned long start;
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unsigned long size;
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};
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extern struct oldmem_data oldmem_data;
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static __always_inline u32 gen_lpswe(unsigned long addr)
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{
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BUILD_BUG_ON(addr > 0xfff);
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return 0xb2b20000 | addr;
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}
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_S390_SETUP_H */
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