diff options
| -rw-r--r-- | arch/riscv/cpu/cpu.c | 11 | ||||
| -rw-r--r-- | arch/riscv/cpu/start.S | 4 |
2 files changed, 15 insertions, 0 deletions
diff --git a/arch/riscv/cpu/cpu.c b/arch/riscv/cpu/cpu.c index 85592f5bee2..296e458db4f 100644 --- a/arch/riscv/cpu/cpu.c +++ b/arch/riscv/cpu/cpu.c @@ -140,3 +140,14 @@ int arch_early_init_r(void) { return riscv_cpu_probe(); } + +/** + * harts_early_init() - A callback function called by start.S to configure + * feature settings of each hart. + * + * In a multi-core system, memory access shall be careful here, it shall + * take care of race conditions. + */ +__weak void harts_early_init(void) +{ +} diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S index 8589509e012..308b0a97a58 100644 --- a/arch/riscv/cpu/start.S +++ b/arch/riscv/cpu/start.S @@ -117,6 +117,10 @@ call_board_init_f_0: mv sp, a0 #endif + /* Configure proprietary settings and customized CSRs of harts */ +call_harts_early_init: + jal harts_early_init + #ifndef CONFIG_XIP /* * Pick hart to initialize global data and run U-Boot. The other harts |