From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/x86/include/asm/setup.h | 151 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 151 insertions(+) create mode 100644 arch/x86/include/asm/setup.h (limited to 'arch/x86/include/asm/setup.h') diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h new file mode 100644 index 0000000000..f3495623ac --- /dev/null +++ b/arch/x86/include/asm/setup.h @@ -0,0 +1,151 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_SETUP_H +#define _ASM_X86_SETUP_H + +#include + +#define COMMAND_LINE_SIZE 2048 + +#include +#include +#include + +#ifdef __i386__ + +#include +/* + * Reserved space for vmalloc and iomap - defined in asm/page.h + */ +#define MAXMEM_PFN PFN_DOWN(MAXMEM) +#define MAX_NONPAE_PFN (1 << 20) + +#endif /* __i386__ */ + +#define PARAM_SIZE 4096 /* sizeof(struct boot_params) */ + +#define OLD_CL_MAGIC 0xA33F +#define OLD_CL_ADDRESS 0x020 /* Relative to real mode data */ +#define NEW_CL_POINTER 0x228 /* Relative to real mode data */ + +#ifndef __ASSEMBLY__ +#include +#include + +extern u64 relocated_ramdisk; + +/* Interrupt control for vSMPowered x86_64 systems */ +#ifdef CONFIG_X86_64 +void vsmp_init(void); +#else +static inline void vsmp_init(void) { } +#endif + +struct pt_regs; + +void setup_bios_corruption_check(void); +void early_platform_quirks(void); + +extern unsigned long saved_video_mode; + +extern void reserve_standard_io_resources(void); +extern void i386_reserve_resources(void); +extern unsigned long __startup_64(unsigned long physaddr, struct boot_params *bp); +extern void startup_64_setup_env(unsigned long physbase); +extern void early_setup_idt(void); +extern void __init do_early_exception(struct pt_regs *regs, int trapnr); + +#ifdef CONFIG_X86_INTEL_MID +extern void x86_intel_mid_early_setup(void); +#else +static inline void x86_intel_mid_early_setup(void) { } +#endif + +#ifdef CONFIG_X86_INTEL_CE +extern void x86_ce4100_early_setup(void); +#else +static inline void x86_ce4100_early_setup(void) { } +#endif + +#ifndef _SETUP + +#include +#include + +/* + * This is set up by the setup-routine at boot-time + */ +extern struct boot_params boot_params; +extern char _text[]; + +static inline bool kaslr_enabled(void) +{ + return IS_ENABLED(CONFIG_RANDOMIZE_MEMORY) && + !!(boot_params.hdr.loadflags & KASLR_FLAG); +} + +/* + * Apply no randomization if KASLR was disabled at boot or if KASAN + * is enabled. KASAN shadow mappings rely on regions being PGD aligned. + */ +static inline bool kaslr_memory_enabled(void) +{ + return kaslr_enabled() && !IS_ENABLED(CONFIG_KASAN); +} + +static inline unsigned long kaslr_offset(void) +{ + return (unsigned long)&_text - __START_KERNEL; +} + +/* + * Do NOT EVER look at the BIOS memory size location. + * It does not work on many machines. + */ +#define LOWMEMSIZE() (0x9f000) + +/* exceedingly early brk-like allocator */ +extern unsigned long _brk_end; +void *extend_brk(size_t size, size_t align); + +/* + * Reserve space in the .brk section, which is a block of memory from which the + * caller is allowed to allocate very early (before even memblock is available) + * by calling extend_brk(). All allocated memory will be eventually converted + * to memblock. Any leftover unallocated memory will be freed. + * + * The size is in bytes. + */ +#define RESERVE_BRK(name, size) \ + __section(".bss..brk") __aligned(1) __used \ + static char __brk_##name[size] + +extern void probe_roms(void); + +void clear_bss(void); + +#ifdef __i386__ + +asmlinkage void __init __noreturn i386_start_kernel(void); + +#else +asmlinkage void __init __noreturn x86_64_start_kernel(char *real_mode); +asmlinkage void __init __noreturn x86_64_start_reservations(char *real_mode_data); + +#endif /* __i386__ */ +#endif /* _SETUP */ + +#else /* __ASSEMBLY */ + +.macro __RESERVE_BRK name, size + .pushsection .bss..brk, "aw" +SYM_DATA_START(__brk_\name) + .skip \size +SYM_DATA_END(__brk_\name) + .popsection +.endm + +#define RESERVE_BRK(name, size) __RESERVE_BRK name, size + +#endif /* __ASSEMBLY__ */ + +#endif /* _ASM_X86_SETUP_H */ -- cgit v1.2.3