Handle tsc rollover.

[seabios.git] / src / util.h

diff --git a/src/util.h b/src/util.h
index 8ae54f4d70d38d7dfdd88f6926570500094edc9c..f95cdb598e803e39808ac61054f5793d85994b74 100644 (file)
--- a/src/util.h
+++ b/src/util.h
@@ -36,6 +36,12 @@ static inline void cpu_relax(void)
     asm volatile("rep ; nop": : :"memory");
 }
 
+// Atomically enable irqs and sleep until an irq; then re-disable irqs.
+static inline void wait_irq(void)
+{
+    asm volatile("sti ; hlt ; cli ; cld": : :"memory");
+}
+
 static inline void nop(void)
 {
     asm volatile("nop");
@@ -80,6 +86,43 @@ static inline u64 rdtscll(void)
     return val;
 }
 
+static inline u32 __ffs(u32 word)
+{
+    asm("bsf %1,%0"
+        : "=r" (word)
+        : "rm" (word));
+    return word;
+}
+
+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;
+}
+
+// GDT bit manipulation
+#define GDT_BASE(v)  ((((u64)(v) & 0xff000000) << 32)           \
+                      | (((u64)(v) & 0x00ffffff) << 16))
+#define GDT_LIMIT(v) ((((u64)(v) & 0x000f0000) << 32)   \
+                      | (((u64)(v) & 0x0000ffff) << 0))
+#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
+
 #define call16_simpint(nr, peax, pflags) do {                           \
         ASSERT16();                                                     \
         asm volatile(                                                   \
@@ -132,6 +175,8 @@ void printf(const char *fmt, ...)
     __attribute__ ((format (printf, 1, 2)));
 void __dprintf(const char *fmt, ...)
     __attribute__ ((format (printf, 1, 2)));
+void snprintf(char *str, size_t size, const char *fmt, ...)
+    __attribute__ ((format (printf, 3, 4)));
 #define dprintf(lvl, fmt, args...) do {                         \
         if (CONFIG_DEBUG_LEVEL && (lvl) <= CONFIG_DEBUG_LEVEL)  \
             __dprintf((fmt) , ##args );                         \
@@ -149,11 +194,12 @@ void __debug_isr(const char *fname);
     } while (0)
 #define debug_stub(regs)                        \
     __debug_stub((regs), __LINE__, __func__)
-void hexdump(void *d, int len);
+void hexdump(const void *d, int len);
 
 // kbd.c
 void kbd_setup();
 void handle_15c2(struct bregs *regs);
+void process_key(u8 key);
 
 // mouse.c
 void mouse_setup();
@@ -168,11 +214,15 @@ void serial_setup();
 void lpt_setup();
 
 // clock.c
+static inline int check_time(u64 end) {
+    return (s64)(rdtscll() - end) > 0;
+}
 void timer_setup();
 void ndelay(u32 count);
 void udelay(u32 count);
 void mdelay(u32 count);
 u64 calc_future_tsc(u32 msecs);
+u64 calc_future_tsc_usec(u32 usecs);
 void handle_1583(struct bregs *regs);
 void handle_1586(struct bregs *regs);
 
@@ -187,27 +237,28 @@ void make_bios_writable();
 void make_bios_readonly();
 
 // pciinit.c
-void pci_bios_setup(void);
+void pci_setup(void);
 
 // smm.c
 void smm_init();
 
 // smp.c
 extern u32 CountCPUs;
+extern u32 MaxCountCPUs;
 void wrmsr_smp(u32 index, u64 val);
 void smp_probe(void);
 void smp_probe_setup(void);
 
-// smbios.c
-void smbios_init(void);
-
 // coreboot.c
-const char *cbfs_findNprefix(const char *prefix, int n);
-int cbfs_copy_optionrom(void *dst, u32 maxlen, u32 vendev);
-void cbfs_run_payload(const char *filename);
 struct cbfs_file;
-struct cbfs_file *cbfs_copyfile_prefix(void *dst, u32 maxlen, const char *prefix
-                                       , struct cbfs_file *last);
+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);
+int cbfs_copy_optionrom(void *dst, u32 maxlen, u32 vendev);
+void cbfs_run_payload(struct cbfs_file *file);
+
+void coreboot_copy_biostable();
 void coreboot_setup();
 
 // vgahooks.c
@@ -230,6 +281,43 @@ void init_dma();
 u16 get_pnp_offset();
 void pnp_setup();
 
+// pmm.c
+extern struct zone_s ZoneLow, ZoneHigh, ZoneFSeg, ZoneTmpLow, ZoneTmpHigh;
+void malloc_setup();
+void malloc_finalize();
+void *pmm_malloc(struct zone_s *zone, u32 handle, u32 size, u32 align);
+int pmm_free(void *data);
+void pmm_setup();
+void pmm_finalize();
+#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_tmphigh(u32 size) {
+    return pmm_malloc(&ZoneTmpHigh, PMM_DEFAULT_HANDLE, size, MALLOC_MIN_ALIGN);
+}
+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_tmphigh(u32 align, u32 size) {
+    return pmm_malloc(&ZoneTmpHigh, PMM_DEFAULT_HANDLE, size, align);
+}
+static inline void free(void *data) {
+    pmm_free(data);
+}
+
 // mtrr.c
 void mtrr_setup(void);
 
@@ -239,4 +327,7 @@ void reset_vector() __attribute__ ((noreturn));
 // misc.c
 extern u8 BiosChecksum;
 
+// version (auto generated file out/version.c)
+extern const char VERSION[];
+
 #endif // util.h