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Diffstat (limited to 'arch/s390/include/asm/setup.h')
| -rw-r--r-- | arch/s390/include/asm/setup.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h new file mode 100644 index 000000000..75a2ecec2 --- /dev/null +++ b/arch/s390/include/asm/setup.h @@ -0,0 +1,183 @@ +/* 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 EP_OFFSET 0x10008 +#define EP_STRING "S390EP" +#define PARMAREA 0x10400 +#define EARLY_SCCB_OFFSET 0x11000 +#define HEAD_END 0x12000 + +#define EARLY_SCCB_SIZE PAGE_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_VX BIT(13) +#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 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 + +/* Offsets to parameters in kernel/head.S */ + +#define IPL_DEVICE_OFFSET 0x10400 +#define INITRD_START_OFFSET 0x10408 +#define INITRD_SIZE_OFFSET 0x10410 +#define OLDMEM_BASE_OFFSET 0x10418 +#define OLDMEM_SIZE_OFFSET 0x10420 +#define KERNEL_VERSION_OFFSET 0x10428 +#define COMMAND_LINE_OFFSET 0x10480 + +#ifndef __ASSEMBLY__ + +#include <asm/lowcore.h> +#include <asm/types.h> + +#define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET)) +#define INITRD_START (*(unsigned long *) (INITRD_START_OFFSET)) +#define INITRD_SIZE (*(unsigned long *) (INITRD_SIZE_OFFSET)) +#define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET)) +#define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET)) +#define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET)) + +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 */ + char pad1[0x10480 - 0x10430]; /* 0x10430 - 0x10480 */ + char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */ +}; + +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 int noexec_disabled; +extern int memory_end_set; +extern unsigned long memory_end; +extern unsigned long vmalloc_size; +extern unsigned long max_physmem_end; + +/* 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_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX) +#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) + +/* + * 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_PFAULT +extern int pfault_init(void); +extern void pfault_fini(void); +#else /* CONFIG_PFAULT */ +#define pfault_init() ({-1;}) +#define pfault_fini() do { } while (0) +#endif /* CONFIG_PFAULT */ + +#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); + +void cmma_init(void); +void cmma_init_nodat(void); + +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; +} + +static inline u32 gen_lpswe(unsigned long addr) +{ + BUILD_BUG_ON(addr > 0xfff); + return 0xb2b20000 | addr; +} + +#else /* __ASSEMBLY__ */ + +#define IPL_DEVICE (IPL_DEVICE_OFFSET) +#define INITRD_START (INITRD_START_OFFSET) +#define INITRD_SIZE (INITRD_SIZE_OFFSET) +#define OLDMEM_BASE (OLDMEM_BASE_OFFSET) +#define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET) +#define COMMAND_LINE (COMMAND_LINE_OFFSET) + +#endif /* __ASSEMBLY__ */ +#endif /* _ASM_S390_SETUP_H */ |