diff options
Diffstat (limited to 'arch/arm/mach-mvebu/armada8k/cache_llc.S')
| -rw-r--r-- | arch/arm/mach-mvebu/armada8k/cache_llc.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/armada8k/cache_llc.S b/arch/arm/mach-mvebu/armada8k/cache_llc.S new file mode 100644 index 0000000000..71aecb2dde --- /dev/null +++ b/arch/arm/mach-mvebu/armada8k/cache_llc.S @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2016 Marvell International Ltd. + * + * SPDX-License-Identifier: GPL-2.0 + * https://spdx.org/licenses + */ + +#include <asm/arch-armada8k/cache_llc.h> +#include <linux/linkage.h> + +/* + * int __asm_flush_l3_dcache + * + * flush Armada-8K last level cache. + * + */ +ENTRY(__asm_flush_l3_dcache) + /* flush cache */ + mov x0, #LLC_BASE_ADDR + add x0, x0, #LLC_FLUSH_BY_WAY + movk x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16 + mov w1, #LLC_WAY_MASK + str w1, [x0] + /* sync cache */ + mov x0, #LLC_BASE_ADDR + add x0, x0, #LLC_CACHE_SYNC + movk x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16 + str wzr, [x0] + /* check that cache sync completed */ + mov x0, #LLC_BASE_ADDR + add x0, x0, #LLC_CACHE_SYNC_COMPLETE + movk x0, #MVEBU_A8K_REGS_BASE_MSB, lsl #16 +1: ldr w1, [x0] + and w1, w1, #LLC_CACHE_SYNC_MASK + cbnz w1, 1b + /* return success */ + mov x0, #0 + ret +ENDPROC(__asm_flush_l3_dcache) |