| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * S390 version |
| * Copyright IBM Corp. 1999, 2017 |
| */ |
| #ifndef _ASM_S390_SETUP_H |
| #define _ASM_S390_SETUP_H |
| |
| #include <linux/bits.h> |
| #include <uapi/asm/setup.h> |
| #include <linux/build_bug.h> |
| |
| #define PARMAREA 0x10400 |
| |
| #define COMMAND_LINE_SIZE CONFIG_COMMAND_LINE_SIZE |
| /* |
| * Machine features detected in early.c |
| */ |
| |
| #define MACHINE_FLAG_VM BIT(0) |
| #define MACHINE_FLAG_KVM BIT(1) |
| #define MACHINE_FLAG_LPAR BIT(2) |
| #define MACHINE_FLAG_DIAG9C BIT(3) |
| #define MACHINE_FLAG_ESOP BIT(4) |
| #define MACHINE_FLAG_IDTE BIT(5) |
| #define MACHINE_FLAG_EDAT1 BIT(7) |
| #define MACHINE_FLAG_EDAT2 BIT(8) |
| #define MACHINE_FLAG_TOPOLOGY BIT(10) |
| #define MACHINE_FLAG_TE BIT(11) |
| #define MACHINE_FLAG_TLB_LC BIT(12) |
| #define MACHINE_FLAG_TLB_GUEST BIT(14) |
| #define MACHINE_FLAG_NX BIT(15) |
| #define MACHINE_FLAG_GS BIT(16) |
| #define MACHINE_FLAG_SCC BIT(17) |
| #define MACHINE_FLAG_PCI_MIO BIT(18) |
| #define MACHINE_FLAG_RDP BIT(19) |
| |
| #define LPP_MAGIC BIT(31) |
| #define LPP_PID_MASK _AC(0xffffffff, UL) |
| |
| /* Offsets to entry points in kernel/head.S */ |
| |
| #define STARTUP_NORMAL_OFFSET 0x10000 |
| #define STARTUP_KDUMP_OFFSET 0x10010 |
| |
| #define LEGACY_COMMAND_LINE_SIZE 896 |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <asm/lowcore.h> |
| #include <asm/types.h> |
| |
| struct parmarea { |
| unsigned long ipl_device; /* 0x10400 */ |
| unsigned long initrd_start; /* 0x10408 */ |
| unsigned long initrd_size; /* 0x10410 */ |
| unsigned long oldmem_base; /* 0x10418 */ |
| unsigned long oldmem_size; /* 0x10420 */ |
| unsigned long kernel_version; /* 0x10428 */ |
| unsigned long max_command_line_size; /* 0x10430 */ |
| char pad1[0x10480-0x10438]; /* 0x10438 - 0x10480 */ |
| char command_line[COMMAND_LINE_SIZE]; /* 0x10480 */ |
| }; |
| |
| extern struct parmarea parmarea; |
| |
| extern unsigned int zlib_dfltcc_support; |
| #define ZLIB_DFLTCC_DISABLED 0 |
| #define ZLIB_DFLTCC_FULL 1 |
| #define ZLIB_DFLTCC_DEFLATE_ONLY 2 |
| #define ZLIB_DFLTCC_INFLATE_ONLY 3 |
| #define ZLIB_DFLTCC_FULL_DEBUG 4 |
| |
| extern unsigned long ident_map_size; |
| extern unsigned long max_mappable; |
| |
| /* The Write Back bit position in the physaddr is given by the SLPC PCI */ |
| extern unsigned long mio_wb_bit_mask; |
| |
| #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) |
| #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) |
| #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR) |
| |
| #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C) |
| #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP) |
| #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE) |
| #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1) |
| #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2) |
| #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) |
| #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE) |
| #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC) |
| #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST) |
| #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX) |
| #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS) |
| #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC) |
| #define MACHINE_HAS_PCI_MIO (S390_lowcore.machine_flags & MACHINE_FLAG_PCI_MIO) |
| #define MACHINE_HAS_RDP (S390_lowcore.machine_flags & MACHINE_FLAG_RDP) |
| |
| /* |
| * Console mode. Override with conmode= |
| */ |
| extern unsigned int console_mode; |
| extern unsigned int console_devno; |
| extern unsigned int console_irq; |
| |
| #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 CONSOLE_IS_VT220 (console_mode == 4) |
| #define CONSOLE_IS_HVC (console_mode == 5) |
| #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 SET_CONSOLE_VT220 do { console_mode = 4; } while (0) |
| #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) |
| |
| #ifdef CONFIG_VMCP |
| void vmcp_cma_reserve(void); |
| #else |
| static inline void vmcp_cma_reserve(void) { } |
| #endif |
| |
| void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); |
| |
| extern void (*_machine_restart)(char *command); |
| extern void (*_machine_halt)(void); |
| extern void (*_machine_power_off)(void); |
| |
| extern unsigned long __kaslr_offset; |
| static inline unsigned long kaslr_offset(void) |
| { |
| return __kaslr_offset; |
| } |
| |
| extern int __kaslr_enabled; |
| static inline int kaslr_enabled(void) |
| { |
| if (IS_ENABLED(CONFIG_RANDOMIZE_BASE)) |
| return __kaslr_enabled; |
| return 0; |
| } |
| |
| struct oldmem_data { |
| unsigned long start; |
| unsigned long size; |
| }; |
| extern struct oldmem_data oldmem_data; |
| |
| static __always_inline u32 gen_lpswe(unsigned long addr) |
| { |
| BUILD_BUG_ON(addr > 0xfff); |
| return 0xb2b20000 | addr; |
| } |
| #endif /* __ASSEMBLY__ */ |
| #endif /* _ASM_S390_SETUP_H */ |