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tpidr_el1是启动时每个核写入的值么？5 Y1 D5 [ X+ P1 w! B
* Q) l: b1 {- i) C#ifdef RT_USING_SMP
6 A" t; |8 {; U% r. ^/* The more common mpidr_el1 table, redefine it in BSP if it is in other cases */5 f" c4 A; I7 D7 z5 T! J" Q4 x: c
RT_WEAK rt_uint64_t rt_cpu_mpidr_early[] =
+ G2 [ \3 n6 T3 o/ _4 w' a# o V{. u) |+ E* F! O
[0] = 0x80000000,4 H) F# N/ ]' Z1 J0 {! l$ y+ ?
[1] = 0x80000001,
5 ^. H! ^; O Z f; i. O, G[2] = 0x80000002,
- t$ }* w9 H+ B( `2 g[3] = 0x80000003,; Y! R3 N6 Z& W
[4] = 0x80000004,) d) Y! [1 e" x6 q/ Q
[5] = 0x80000005,
- _' m7 W$ p* p0 W! k+ N[6] = 0x80000006,& ^* M) z! B3 T2 C; B( `
[7] = 0x80000007,8 `+ I9 |% F [& I% z$ N: P
[RT_CPUS_NR] = 03 k, J6 v+ G! l3 S
};
$ q0 l$ \8 O- E W) w#endif9 N6 a' t$ [! z$ m) f- i1 Z! H
int rt_hw_cpu_id(void)* [, Q* j+ c( O6 E
{
) ~9 d7 r, g8 C) U* N0 Qrt_base_t value;4 t, f/ u" ?7 a" W# x7 F
asm volatile ("mrs %0, tpidr_el1":"=r"(value));! N$ v1 [! W8 ]% V) f Y; \7 r1 D
return value;
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发表于 2022-8-4 13:17
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淘帖
支持！
反对！