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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/x86/include/asm/setup.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/include/asm/setup.h')
-rw-r--r--arch/x86/include/asm/setup.h151
1 files changed, 151 insertions, 0 deletions
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 <uapi/asm/setup.h>
+
+#define COMMAND_LINE_SIZE 2048
+
+#include <linux/linkage.h>
+#include <asm/page_types.h>
+#include <asm/ibt.h>
+
+#ifdef __i386__
+
+#include <linux/pfn.h>
+/*
+ * 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 <asm/bootparam.h>
+#include <asm/x86_init.h>
+
+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 <asm/espfix.h>
+#include <linux/kernel.h>
+
+/*
+ * 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 */