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/*
* Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw>
* Copyright (C) 2009, Wind River Systems Inc
* Implemented by fredrik.markstrom@gmail.com and ivarholmqvist@gmail.com
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/cache.h>
DECLARE_GLOBAL_DATA_PTR;
static void __flush_dcache(unsigned long start, unsigned long end)
{
unsigned long addr;
start &= ~(gd->arch.dcache_line_size - 1);
end += (gd->arch.dcache_line_size - 1);
end &= ~(gd->arch.dcache_line_size - 1);
for (addr = start; addr < end; addr += gd->arch.dcache_line_size) {
__asm__ __volatile__ (" flushda 0(%0)\n"
: /* Outputs */
: /* Inputs */ "r"(addr)
/* : No clobber */);
}
}
static void __flush_dcache_all(unsigned long start, unsigned long end)
{
unsigned long addr;
start &= ~(gd->arch.dcache_line_size - 1);
end += (gd->arch.dcache_line_size - 1);
end &= ~(gd->arch.dcache_line_size - 1);
if (end > start + gd->arch.dcache_size)
end = start + gd->arch.dcache_size;
for (addr = start; addr < end; addr += gd->arch.dcache_line_size) {
__asm__ __volatile__ (" flushd 0(%0)\n"
: /* Outputs */
: /* Inputs */ "r"(addr)
/* : No clobber */);
}
}
static void __invalidate_dcache(unsigned long start, unsigned long end)
{
unsigned long addr;
start &= ~(gd->arch.dcache_line_size - 1);
end += (gd->arch.dcache_line_size - 1);
end &= ~(gd->arch.dcache_line_size - 1);
for (addr = start; addr < end; addr += gd->arch.dcache_line_size) {
__asm__ __volatile__ (" initda 0(%0)\n"
: /* Outputs */
: /* Inputs */ "r"(addr)
/* : No clobber */);
}
}
static void __flush_icache(unsigned long start, unsigned long end)
{
unsigned long addr;
start &= ~(gd->arch.icache_line_size - 1);
end += (gd->arch.icache_line_size - 1);
end &= ~(gd->arch.icache_line_size - 1);
if (end > start + gd->arch.icache_size)
end = start + gd->arch.icache_size;
for (addr = start; addr < end; addr += gd->arch.icache_line_size) {
__asm__ __volatile__ (" flushi %0\n"
: /* Outputs */
: /* Inputs */ "r"(addr)
/* : No clobber */);
}
__asm__ __volatile(" flushp\n");
}
void flush_dcache_all(void)
{
__flush_dcache_all(0, gd->arch.dcache_size);
__flush_icache(0, gd->arch.icache_size);
}
void flush_dcache_range(unsigned long start, unsigned long end)
{
if (gd->arch.has_initda)
__flush_dcache(start, end);
else
__flush_dcache_all(start, end);
}
void flush_cache(unsigned long start, unsigned long size)
{
if (gd->arch.has_initda)
__flush_dcache(start, start + size);
else
__flush_dcache_all(start, start + size);
__flush_icache(start, start + size);
}
void invalidate_dcache_range(unsigned long start, unsigned long end)
{
if (gd->arch.has_initda)
__invalidate_dcache(start, end);
else
__flush_dcache_all(start, end);
}
int dcache_status(void)
{
return 1;
}
void dcache_enable(void)
{
flush_dcache_all();
}
void dcache_disable(void)
{
flush_dcache_all();
}
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