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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * (C) Copyright 2007 Michal Simek
- *
- * Michal SIMEK <monstr@monstr.eu>
- */
- #include <common.h>
- #include <cpu_func.h>
- #include <asm/asm.h>
- #include <asm/cache.h>
- int dcache_status(void)
- {
- int i = 0;
- int mask = 0x80;
- __asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory");
- /* i&=0x80 */
- __asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory");
- return i;
- }
- int icache_status(void)
- {
- int i = 0;
- int mask = 0x20;
- __asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory");
- /* i&=0x20 */
- __asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory");
- return i;
- }
- void icache_enable(void)
- {
- MSRSET(0x20);
- }
- void icache_disable(void)
- {
- /* we are not generate ICACHE size -> flush whole cache */
- flush_cache(0, 32768);
- MSRCLR(0x20);
- }
- void dcache_enable(void)
- {
- MSRSET(0x80);
- }
- void dcache_disable(void)
- {
- #ifdef XILINX_USE_DCACHE
- flush_cache(0, XILINX_DCACHE_BYTE_SIZE);
- #endif
- MSRCLR(0x80);
- }
- void flush_cache(ulong addr, ulong size)
- {
- int i;
- for (i = 0; i < size; i += 4)
- asm volatile (
- #ifdef CONFIG_ICACHE
- "wic %0, r0;"
- #endif
- "nop;"
- #ifdef CONFIG_DCACHE
- "wdc.flush %0, r0;"
- #endif
- "nop;"
- :
- : "r" (addr + i)
- : "memory");
- }
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