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Diffstat (limited to 'plat/gxb/aarch64/cache.S')
| -rw-r--r-- | plat/gxb/aarch64/cache.S | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/plat/gxb/aarch64/cache.S b/plat/gxb/aarch64/cache.S new file mode 100644 index 0000000..d80c716 --- /dev/null +++ b/plat/gxb/aarch64/cache.S @@ -0,0 +1,38 @@ +/* + * (C) Copyright 2013 + * David Feng <fenghua@phytium.com.cn> + * + * This file is based on sample code from ARMv8 ARM. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <arch.h> +#include <asm_macros.S> + + .global disable_mmu_el1 + .global disable_mmu_icache_el1 + +/* + * void disable_mmu_el1(void) + * + * disable mmu and dcache. + */ +func disable_mmu_el1 + mov x1, #(SCTLR_M_BIT | SCTLR_C_BIT) +do_disable_mmu: + mrs x0, sctlr_el1 + bic x0, x0, x1 + msr sctlr_el1, x0 + isb // ensure MMU is off + mov x0, #DCCISW // DCache clean and invalidate + b dcsw_op_all + +/* + * void disable_mmu_icache_el1(void) + * + * disable mmu and dcache. + */ +func disable_mmu_icache_el1 + mov x1, #(SCTLR_M_BIT | SCTLR_C_BIT | SCTLR_I_BIT) + b do_disable_mmu
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