diff options
Diffstat (limited to 'arch/riscv/cpu/start.S')
| -rw-r--r-- | arch/riscv/cpu/start.S | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S index 7bafdfd390a..6324ff585d4 100644 --- a/arch/riscv/cpu/start.S +++ b/arch/riscv/cpu/start.S @@ -151,9 +151,16 @@ call_harts_early_init: */ la t0, hart_lottery li t1, 1 +#if CONFIG_IS_ENABLED(RISCV_ISA_ZAAMO) amoswap.w s2, t1, 0(t0) bnez s2, wait_for_gd_init #else + lr.w s2, (t0) + bnez s2, wait_for_gd_init + sc.w s2, t1, (t0) + bnez s2, wait_for_gd_init +#endif +#else /* * FIXME: gp is set before it is initialized. If an XIP U-Boot ever * encounters a pending IPI on boot it is liable to jump to whatever @@ -177,7 +184,12 @@ call_harts_early_init: #if !CONFIG_IS_ENABLED(XIP) #ifdef CONFIG_AVAILABLE_HARTS la t0, available_harts_lock +#if CONFIG_IS_ENABLED(RISCV_ISA_ZAAMO) amoswap.w.rl zero, zero, 0(t0) +#else + fence rw, w + sw zero, 0(t0) +#endif #endif wait_for_gd_init: @@ -190,7 +202,14 @@ wait_for_gd_init: #ifdef CONFIG_AVAILABLE_HARTS la t0, available_harts_lock li t1, 1 -1: amoswap.w.aq t1, t1, 0(t0) +1: +#if CONFIG_IS_ENABLED(RISCV_ISA_ZAAMO) + amoswap.w.aq t1, t1, 0(t0) +#else + lr.w.aq t1, 0(t0) + bnez t1, 1b + sc.w.rl t1, t1, 0(t0) +#endif bnez t1, 1b /* register available harts in the available_harts mask */ @@ -200,7 +219,12 @@ wait_for_gd_init: or t2, t2, t1 SREG t2, GD_AVAILABLE_HARTS(gp) +#if CONFIG_IS_ENABLED(RISCV_ISA_ZAAMO) amoswap.w.rl zero, zero, 0(t0) +#else + fence rw, w + sw zero, 0(t0) +#endif #endif /* |