Add a first bit of a framework. Builds the following parts, in

accordance to the newboot document:

* reset vector (16 bytes)
* vpd (240bytes)
* boot block (8k - 256b)
* lar archive (256-8 k)

The boot block is kind of simple, still. It enables pmode, car, and
starts looking for an initram module in the lar archive.

Note: This doesnt do much at the moment,
as gas seems to produce buggy code in init.S.

Take this as a suggestion of how it might work and please provide
patches fixing it and bringing it into shape.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@62 f3766cd6-281f-0410-b1cd-43a5c92072e9

include/cpu/generic/x86/arch/hlt.h

@@ -0,0 +1,9 @@
+#ifndef ARCH_HLT_H
+#define ARCH_HLT_H
+
+static inline __attribute__((always_inline)) void hlt(void)
+{
+	asm("hlt");
+}
+
+#endif

include/cpu/generic/x86/div64.h

@@ -0,0 +1,48 @@
+#ifndef __I386_DIV64
+#define __I386_DIV64
+
+/*
+ * do_div() is NOT a C function. It wants to return
+ * two values (the quotient and the remainder), but
+ * since that doesn't work very well in C, what it
+ * does is:
+ *
+ * - modifies the 64-bit dividend _in_place_
+ * - returns the 32-bit remainder
+ *
+ * This ends up being the most efficient "calling
+ * convention" on x86.
+ */
+#define do_div(n,base) ({ \
+	unsigned long __upper, __low, __high, __mod, __base; \
+	__base = (base); \
+	asm("":"=a" (__low), "=d" (__high):"A" (n)); \
+	__upper = __high; \
+	if (__high) { \
+		__upper = __high % (__base); \
+		__high = __high / (__base); \
+	} \
+	asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (__base), "0" (__low), "1" (__upper)); \
+	asm("":"=A" (n):"a" (__low),"d" (__high)); \
+	__mod; \
+})
+
+/*
+ * (long)X = ((long long)divs) / (long)div
+ * (long)rem = ((long long)divs) % (long)div
+ *
+ * Warning, this will do an exception if X overflows.
+ */
+#define div_long_long_rem(a,b,c) div_ll_X_l_rem(a,b,c)
+
+extern inline long
+div_ll_X_l_rem(long long divs, long div, long *rem)
+{
+	long dum2;
+      __asm__("divl %2":"=a"(dum2), "=d"(*rem)
+      :	"rm"(div), "A"(divs));
+
+	return dum2;
+
+}
+#endif