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12#include <asm/addrspace.h>
13#include <asm/bug.h>
14#include <asm/cacheflush.h>
15
16#ifndef CKSEG2
17#define CKSEG2 CKSSEG
18#endif
19#ifndef TO_PHYS_MASK
20#define TO_PHYS_MASK -1
21#endif
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38unsigned long run_uncached(void *func)
39{
40 register long ret __asm__("$2");
41 long lfunc = (long)func, ufunc;
42 long usp;
43 long sp;
44
45 __asm__("move %0, $sp" : "=r" (sp));
46
47 if (sp >= (long)CKSEG0 && sp < (long)CKSEG2)
48 usp = CKSEG1ADDR(sp);
49#ifdef CONFIG_64BIT
50 else if ((long long)sp >= (long long)PHYS_TO_XKPHYS(0, 0) &&
51 (long long)sp < (long long)PHYS_TO_XKPHYS(8, 0))
52 usp = PHYS_TO_XKPHYS(K_CALG_UNCACHED,
53 XKPHYS_TO_PHYS((long long)sp));
54#endif
55 else {
56 BUG();
57 usp = sp;
58 }
59 if (lfunc >= (long)CKSEG0 && lfunc < (long)CKSEG2)
60 ufunc = CKSEG1ADDR(lfunc);
61#ifdef CONFIG_64BIT
62 else if ((long long)lfunc >= (long long)PHYS_TO_XKPHYS(0, 0) &&
63 (long long)lfunc < (long long)PHYS_TO_XKPHYS(8, 0))
64 ufunc = PHYS_TO_XKPHYS(K_CALG_UNCACHED,
65 XKPHYS_TO_PHYS((long long)lfunc));
66#endif
67 else {
68 BUG();
69 ufunc = lfunc;
70 }
71
72 __asm__ __volatile__ (
73 " move $16, $sp\n"
74 " move $sp, %1\n"
75 " jalr %2\n"
76 " move $sp, $16"
77 : "=r" (ret)
78 : "r" (usp), "r" (ufunc)
79 : "$16", "$31");
80
81 return ret;
82}
83