--- /dev/null
+// Basic x86 asm functions and function defs.
+//
+// Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
+//
+// This file may be distributed under the terms of the GNU LGPLv3 license.
+#ifndef __UTIL_H
+#define __UTIL_H
+
+#include "types.h" // u32
+
+static inline void irq_disable(void)
+{
+ asm volatile("cli": : :"memory");
+}
+
+static inline void irq_enable(void)
+{
+ asm volatile("sti": : :"memory");
+}
+
+static inline unsigned long irq_save(void)
+{
+ unsigned long flags;
+ asm volatile("pushfl ; popl %0" : "=g" (flags): :"memory");
+ irq_disable();
+ return flags;
+}
+
+static inline void irq_restore(unsigned long flags)
+{
+ asm volatile("pushl %0 ; popfl" : : "g" (flags) : "memory", "cc");
+}
+
+static inline void cpu_relax(void)
+{
+ asm volatile("rep ; nop": : :"memory");
+}
+
+static inline void nop(void)
+{
+ asm volatile("nop");
+}
+
+static inline void hlt(void)
+{
+ asm volatile("hlt": : :"memory");
+}
+
+static inline void wbinvd(void)
+{
+ asm volatile("wbinvd": : :"memory");
+}
+
+#define CPUID_MSR (1 << 5)
+#define CPUID_APIC (1 << 9)
+#define CPUID_MTRR (1 << 12)
+static inline void cpuid(u32 index, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx)
+{
+ asm("cpuid"
+ : "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx)
+ : "0" (index));
+}
+
+static inline u32 getcr0(void) {
+ u32 cr0;
+ asm("movl %%cr0, %0" : "=r"(cr0));
+ return cr0;
+}
+static inline void setcr0(u32 cr0) {
+ asm("movl %0, %%cr0" : : "r"(cr0));
+}
+
+static inline u64 rdmsr(u32 index)
+{
+ u64 ret;
+ asm ("rdmsr" : "=A"(ret) : "c"(index));
+ return ret;
+}
+
+static inline void wrmsr(u32 index, u64 val)
+{
+ asm volatile ("wrmsr" : : "c"(index), "A"(val));
+}
+
+static inline u64 rdtscll(void)
+{
+ u64 val;
+ asm volatile("rdtsc" : "=A" (val));
+ return val;
+}
+
+static inline u32 __ffs(u32 word)
+{
+ asm("bsf %1,%0"
+ : "=r" (word)
+ : "rm" (word));
+ return word;
+}
+static inline u32 __fls(u32 word)
+{
+ asm("bsr %1,%0"
+ : "=r" (word)
+ : "rm" (word));
+ return word;
+}
+
+static inline u16 __htons_constant(u16 val) {
+ return (val<<8) | (val>>8);
+}
+static inline u32 __htonl_constant(u32 val) {
+ return (val<<24) | ((val&0xff00)<<8) | ((val&0xff0000)>>8) | (val>>24);
+}
+static inline u32 __htonl(u32 val) {
+ asm("bswapl %0" : "+r"(val));
+ return val;
+}
+#define htonl(x) (__builtin_constant_p((u32)(x)) ? __htonl_constant(x) : __htonl(x))
+#define ntohl(x) htonl(x)
+#define htons(x) __htons_constant(x)
+#define ntohs(x) htons(x)
+
+static inline u16 cpu_to_le16(u16 x)
+{
+ return x;
+}
+
+static inline u32 cpu_to_le32(u32 x)
+{
+ return x;
+}
+
+static inline u32 getesp(void) {
+ u32 esp;
+ asm("movl %%esp, %0" : "=rm"(esp));
+ return esp;
+}
+
+static inline void writel(void *addr, u32 val) {
+ *(volatile u32 *)addr = val;
+}
+static inline void writew(void *addr, u16 val) {
+ *(volatile u16 *)addr = val;
+}
+static inline void writeb(void *addr, u8 val) {
+ *(volatile u8 *)addr = val;
+}
+static inline u32 readl(const void *addr) {
+ return *(volatile const u32 *)addr;
+}
+static inline u16 readw(const void *addr) {
+ return *(volatile const u16 *)addr;
+}
+static inline u8 readb(const void *addr) {
+ return *(volatile const u8 *)addr;
+}
+
+#define call16_simpint(nr, peax, pflags) do { \
+ ASSERT16(); \
+ asm volatile( \
+ "pushl %%ebp\n" \
+ "sti\n" \
+ "stc\n" \
+ "int %2\n" \
+ "pushfl\n" \
+ "popl %1\n" \
+ "cli\n" \
+ "cld\n" \
+ "popl %%ebp" \
+ : "+a"(*peax), "=c"(*pflags) \
+ : "i"(nr) \
+ : "ebx", "edx", "esi", "edi", "cc", "memory"); \
+ } while (0)
+
+// GDT bits
+#define GDT_CODE (0x9bULL << 40) // Code segment - P,R,A bits also set
+#define GDT_DATA (0x93ULL << 40) // Data segment - W,A bits also set
+#define GDT_B (0x1ULL << 54) // Big flag
+#define GDT_G (0x1ULL << 55) // Granularity flag
+// GDT bits for segment base
+#define GDT_BASE(v) ((((u64)(v) & 0xff000000) << 32) \
+ | (((u64)(v) & 0x00ffffff) << 16))
+// GDT bits for segment limit (0-1Meg)
+#define GDT_LIMIT(v) ((((u64)(v) & 0x000f0000) << 32) \
+ | (((u64)(v) & 0x0000ffff) << 0))
+// GDT bits for segment limit (0-4Gig in 4K chunks)
+#define GDT_GRANLIMIT(v) (GDT_G | GDT_LIMIT((v) >> 12))
+
+struct descloc_s {
+ u16 length;
+ u32 addr;
+} PACKED;
+
+// util.c
+struct bregs;
+inline void call16(struct bregs *callregs);
+inline void call16big(struct bregs *callregs);
+inline void __call16_int(struct bregs *callregs, u16 offset);
+#define call16_int(nr, callregs) do { \
+ extern void irq_trampoline_ ##nr (); \
+ __call16_int((callregs), (u32)&irq_trampoline_ ##nr ); \
+ } while (0)
+u8 checksum_far(u16 buf_seg, void *buf_far, u32 len);
+u8 checksum(void *buf, u32 len);
+size_t strlen(const char *s);
+int memcmp(const void *s1, const void *s2, size_t n);
+int strcmp(const char *s1, const char *s2);
+inline void memset_far(u16 d_seg, void *d_far, u8 c, size_t len);
+inline void memset16_far(u16 d_seg, void *d_far, u16 c, size_t len);
+void *memset(void *s, int c, size_t n);
+void memset_fl(void *ptr, u8 val, size_t size);
+inline void memcpy_far(u16 d_seg, void *d_far
+ , u16 s_seg, const void *s_far, size_t len);
+void memcpy_fl(void *d_fl, const void *s_fl, size_t len);
+void *memcpy(void *d1, const void *s1, size_t len);
+#if MODESEGMENT == 0
+#define memcpy __builtin_memcpy
+#endif
+void iomemcpy(void *d, const void *s, u32 len);
+void *memmove(void *d, const void *s, size_t len);
+char *strtcpy(char *dest, const char *src, size_t len);
+char *strchr(const char *s, int c);
+void nullTrailingSpace(char *buf);
+int get_keystroke(int msec);
+
+// stacks.c
+u32 call32(void *func, u32 eax, u32 errret);
+inline u32 stack_hop(u32 eax, u32 edx, void *func);
+extern struct thread_info MainThread;
+extern int CanPreempt;
+struct thread_info *getCurThread(void);
+void yield(void);
+void wait_irq(void);
+void run_thread(void (*func)(void*), void *data);
+void wait_threads(void);
+struct mutex_s { u32 isLocked; };
+void mutex_lock(struct mutex_s *mutex);
+void mutex_unlock(struct mutex_s *mutex);
+void start_preempt(void);
+void finish_preempt(void);
+int wait_preempt(void);
+void check_preempt(void);
+
+// output.c
+void debug_serial_setup(void);
+void panic(const char *fmt, ...)
+ __attribute__ ((format (printf, 1, 2))) __noreturn;
+void printf(const char *fmt, ...)
+ __attribute__ ((format (printf, 1, 2)));
+int snprintf(char *str, size_t size, const char *fmt, ...)
+ __attribute__ ((format (printf, 3, 4)));
+char * znprintf(size_t size, const char *fmt, ...)
+ __attribute__ ((format (printf, 2, 3)));
+void __dprintf(const char *fmt, ...)
+ __attribute__ ((format (printf, 1, 2)));
+void __debug_enter(struct bregs *regs, const char *fname);
+void __debug_isr(const char *fname);
+void __debug_stub(struct bregs *regs, int lineno, const char *fname);
+void __warn_invalid(struct bregs *regs, int lineno, const char *fname);
+void __warn_unimplemented(struct bregs *regs, int lineno, const char *fname);
+void __warn_internalerror(int lineno, const char *fname);
+void __warn_noalloc(int lineno, const char *fname);
+void __warn_timeout(int lineno, const char *fname);
+void __set_invalid(struct bregs *regs, int lineno, const char *fname);
+void __set_unimplemented(struct bregs *regs, int lineno, const char *fname);
+void __set_code_invalid(struct bregs *regs, u32 linecode, const char *fname);
+void __set_code_unimplemented(struct bregs *regs, u32 linecode
+ , const char *fname);
+void hexdump(const void *d, int len);
+
+#define dprintf(lvl, fmt, args...) do { \
+ if (CONFIG_DEBUG_LEVEL && (lvl) <= CONFIG_DEBUG_LEVEL) \
+ __dprintf((fmt) , ##args ); \
+ } while (0)
+#define debug_enter(regs, lvl) do { \
+ if ((lvl) && (lvl) <= CONFIG_DEBUG_LEVEL) \
+ __debug_enter((regs), __func__); \
+ } while (0)
+#define debug_isr(lvl) do { \
+ if ((lvl) && (lvl) <= CONFIG_DEBUG_LEVEL) \
+ __debug_isr(__func__); \
+ } while (0)
+#define debug_stub(regs) \
+ __debug_stub((regs), __LINE__, __func__)
+#define warn_invalid(regs) \
+ __warn_invalid((regs), __LINE__, __func__)
+#define warn_unimplemented(regs) \
+ __warn_unimplemented((regs), __LINE__, __func__)
+#define warn_internalerror() \
+ __warn_internalerror(__LINE__, __func__)
+#define warn_noalloc() \
+ __warn_noalloc(__LINE__, __func__)
+#define warn_timeout() \
+ __warn_timeout(__LINE__, __func__)
+#define set_invalid(regs) \
+ __set_invalid((regs), __LINE__, __func__)
+#define set_code_invalid(regs, code) \
+ __set_code_invalid((regs), (code) | (__LINE__ << 8), __func__)
+#define set_unimplemented(regs) \
+ __set_unimplemented((regs), __LINE__, __func__)
+#define set_code_unimplemented(regs, code) \
+ __set_code_unimplemented((regs), (code) | (__LINE__ << 8), __func__)
+
+// kbd.c
+void kbd_setup(void);
+void handle_15c2(struct bregs *regs);
+void process_key(u8 key);
+
+// mouse.c
+void mouse_setup(void);
+void process_mouse(u8 data);
+
+// system.c
+extern u32 RamSize;
+extern u64 RamSizeOver4G;
+void mathcp_setup(void);
+
+// serial.c
+void serial_setup(void);
+void lpt_setup(void);
+
+// clock.c
+#define PIT_TICK_RATE 1193180 // Underlying HZ of PIT
+#define PIT_TICK_INTERVAL 65536 // Default interval for 18.2Hz timer
+static inline int check_tsc(u64 end) {
+ return (s64)(rdtscll() - end) > 0;
+}
+void timer_setup(void);
+void ndelay(u32 count);
+void udelay(u32 count);
+void mdelay(u32 count);
+void nsleep(u32 count);
+void usleep(u32 count);
+void msleep(u32 count);
+u64 calc_future_tsc(u32 msecs);
+u64 calc_future_tsc_usec(u32 usecs);
+u32 calc_future_timer_ticks(u32 count);
+u32 calc_future_timer(u32 msecs);
+int check_timer(u32 end);
+void handle_1583(struct bregs *regs);
+void handle_1586(struct bregs *regs);
+void useRTC(void);
+void releaseRTC(void);
+
+// apm.c
+void apm_shutdown(void);
+void handle_1553(struct bregs *regs);
+
+// pcibios.c
+void handle_1ab1(struct bregs *regs);
+void bios32_setup(void);
+
+// shadow.c
+void make_bios_writable(void);
+void make_bios_readonly(void);
+void qemu_prep_reset(void);
+
+// pciinit.c
+extern const u8 pci_irqs[4];
+void pci_setup(void);
+
+// smm.c
+void smm_init(void);
+
+// smp.c
+extern u32 CountCPUs;
+extern u32 MaxCountCPUs;
+void wrmsr_smp(u32 index, u64 val);
+void smp_probe(void);
+
+// coreboot.c
+extern const char *CBvendor, *CBpart;
+struct cbfs_file;
+struct cbfs_file *cbfs_finddatafile(const char *fname);
+struct cbfs_file *cbfs_findprefix(const char *prefix, struct cbfs_file *last);
+u32 cbfs_datasize(struct cbfs_file *file);
+const char *cbfs_filename(struct cbfs_file *file);
+int cbfs_copyfile(struct cbfs_file *file, void *dst, u32 maxlen);
+void cbfs_run_payload(struct cbfs_file *file);
+void coreboot_copy_biostable(void);
+void cbfs_payload_setup(void);
+void coreboot_setup(void);
+
+// biostable.c
+void copy_pir(void *pos);
+void copy_mptable(void *pos);
+void copy_acpi_rsdp(void *pos);
+void copy_smbios(void *pos);
+
+// vgahooks.c
+void handle_155f(struct bregs *regs);
+struct pci_device;
+void vgahook_setup(struct pci_device *pci);
+
+// optionroms.c
+void call_bcv(u16 seg, u16 ip);
+void optionrom_setup(void);
+void vga_setup(void);
+void s3_resume_vga_init(void);
+extern u32 RomEnd;
+extern int ScreenAndDebug;
+
+// bootsplash.c
+void enable_vga_console(void);
+void enable_bootsplash(void);
+void disable_bootsplash(void);
+
+// resume.c
+extern int HaveRunPost;
+void init_dma(void);
+
+// pnpbios.c
+#define PNP_SIGNATURE 0x506e5024 // $PnP
+u16 get_pnp_offset(void);
+void pnp_setup(void);
+
+// pmm.c
+extern struct zone_s ZoneLow, ZoneHigh, ZoneFSeg, ZoneTmpLow, ZoneTmpHigh;
+void malloc_setup(void);
+void malloc_fixupreloc(void);
+void malloc_finalize(void);
+void *pmm_malloc(struct zone_s *zone, u32 handle, u32 size, u32 align);
+int pmm_free(void *data);
+void pmm_setup(void);
+void pmm_finalize(void);
+#define PMM_DEFAULT_HANDLE 0xFFFFFFFF
+// Minimum alignment of malloc'd memory
+#define MALLOC_MIN_ALIGN 16
+// Helper functions for memory allocation.
+static inline void *malloc_low(u32 size) {
+ return pmm_malloc(&ZoneLow, PMM_DEFAULT_HANDLE, size, MALLOC_MIN_ALIGN);
+}
+static inline void *malloc_high(u32 size) {
+ return pmm_malloc(&ZoneHigh, PMM_DEFAULT_HANDLE, size, MALLOC_MIN_ALIGN);
+}
+static inline void *malloc_fseg(u32 size) {
+ return pmm_malloc(&ZoneFSeg, PMM_DEFAULT_HANDLE, size, MALLOC_MIN_ALIGN);
+}
+static inline void *malloc_tmplow(u32 size) {
+ return pmm_malloc(&ZoneTmpLow, PMM_DEFAULT_HANDLE, size, MALLOC_MIN_ALIGN);
+}
+static inline void *malloc_tmphigh(u32 size) {
+ return pmm_malloc(&ZoneTmpHigh, PMM_DEFAULT_HANDLE, size, MALLOC_MIN_ALIGN);
+}
+static inline void *malloc_tmp(u32 size) {
+ void *ret = malloc_tmphigh(size);
+ if (ret)
+ return ret;
+ return malloc_tmplow(size);
+}
+static inline void *memalign_low(u32 align, u32 size) {
+ return pmm_malloc(&ZoneLow, PMM_DEFAULT_HANDLE, size, align);
+}
+static inline void *memalign_high(u32 align, u32 size) {
+ return pmm_malloc(&ZoneHigh, PMM_DEFAULT_HANDLE, size, align);
+}
+static inline void *memalign_tmplow(u32 align, u32 size) {
+ return pmm_malloc(&ZoneTmpLow, PMM_DEFAULT_HANDLE, size, align);
+}
+static inline void *memalign_tmphigh(u32 align, u32 size) {
+ return pmm_malloc(&ZoneTmpHigh, PMM_DEFAULT_HANDLE, size, align);
+}
+static inline void *memalign_tmp(u32 align, u32 size) {
+ void *ret = memalign_tmphigh(align, size);
+ if (ret)
+ return ret;
+ return memalign_tmplow(align, size);
+}
+static inline void free(void *data) {
+ pmm_free(data);
+}
+
+// mtrr.c
+void mtrr_setup(void);
+
+// romlayout.S
+void reset_vector(void) __noreturn;
+
+// misc.c
+extern u8 BiosChecksum;
+
+// version (auto generated file out/version.c)
+extern const char VERSION[];
+
+#endif // util.h
