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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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17
lib/utils/fdt/fdt_fixup.c
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@@ -385,6 +385,21 @@ int fdt_reserved_memory_fixup(void *fdt)
return 0;
}
void fdt_config_fixup(void *fdt)
{
int chosen_offset, config_offset;
chosen_offset = fdt_path_offset(fdt, "/chosen");
if (chosen_offset < 0)
return;
config_offset = fdt_node_offset_by_compatible(fdt, chosen_offset, "opensbi,config");
if (chosen_offset < 0)
return;
fdt_nop_node(fdt, config_offset);
}
void fdt_fixups(void *fdt)
{
fdt_aplic_fixup(fdt);
@@ -398,4 +413,6 @@ void fdt_fixups(void *fdt)
#ifndef CONFIG_FDT_FIXUPS_PRESERVE_PMU_NODE
fdt_pmu_fixup(fdt);
#endif
fdt_config_fixup(fdt);
}