Introduce the weak symbol spin_table_boot_cpu, which is called by spin_table_update_dt during pre-boot FDT fixup phase for each CPU that has enable-method="spin-table".
This saves the board/arch code from needing to scan the DT looking for CPUs to boot, and also makes it easier to bring the secondary CPUs online as late as possible.
Signed-off-by: Sam Day me@samcday.com --- arch/arm/cpu/armv8/spin_table.c | 9 +++++++++ arch/arm/include/asm/spin_table.h | 1 + 2 files changed, 10 insertions(+)
diff --git a/arch/arm/cpu/armv8/spin_table.c b/arch/arm/cpu/armv8/spin_table.c index 13b300f5c67a6dd257b2cb53350a7b5bafa3db96..f83ff456f26d41402b83f0e30a65f8fc48e42fbe 100644 --- a/arch/arm/cpu/armv8/spin_table.c +++ b/arch/arm/cpu/armv8/spin_table.c @@ -8,6 +8,11 @@ #include <asm/spin_table.h> #include <errno.h>
+int __weak spin_table_boot_cpu(void *fdt, int cpu_offset) +{ + return 0; +} + int spin_table_update_dt(void *fdt) { int cpus_offset, offset; @@ -45,6 +50,10 @@ int spin_table_update_dt(void *fdt) if (!prop || strcmp(prop, "cpu")) continue;
+ ret = spin_table_boot_cpu(fdt, offset); + if (ret) + return ret; + ret = fdt_setprop_u64(fdt, offset, "cpu-release-addr", (unsigned long)&spin_table_cpu_release_addr); if (ret) diff --git a/arch/arm/include/asm/spin_table.h b/arch/arm/include/asm/spin_table.h index 8fc61237e07559f267e1da1fbc8ee646ef08721f..3c422046b830a7a81d7de806ff0db92d346446d2 100644 --- a/arch/arm/include/asm/spin_table.h +++ b/arch/arm/include/asm/spin_table.h @@ -10,5 +10,6 @@ extern char spin_table_reserve_begin; extern char spin_table_reserve_end;
int spin_table_update_dt(void *fdt); +int spin_table_boot_cpu(void *fdt, int cpu_offset);
#endif /* __ASM_SPIN_TABLE_H__ */