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platform: generic: Add support for specify coldboot harts in DT

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Added support for the generic platform to specify the set of coldboot
hart in DT. If not specified in DT, all harts are allowed to coldboot
as before.

The functions related to sbi_hartmask are not available before coldboot,
so I used bitmap, and added a new bitmap_test() function to test whether
a certain bit of the bitmap is set.

Signed-off-by: Cheng Yang <yangcheng.work@foxmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Cheng Yang
2024-02-08 11:14:32 +08:00
committed by Anup Patel
parent 9c8b18eb01
commit 67ce5a763c
3 changed files with 86 additions and 1 deletions
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5
include/sbi/sbi_bitmap.h
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@@ -62,6 +62,11 @@ static inline void bitmap_zero(unsigned long *dst, int nbits)
}
}
static inline int bitmap_test(unsigned long *bmap, int bit)
{
return __test_bit(bit, bmap);
}
static inline void bitmap_zero_except(unsigned long *dst,
int exception, int nbits)
{