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/*
* (C) Copyright 2010
* Texas Instruments, <www.ti.com>
* Aneesh V <aneesh@ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <linux/types.h>
#include <asm/io.h>
#include <asm/armv7.h>
#include <asm/pl310.h>
#include <config.h>
#include <common.h>
struct pl310_regs *const pl310 = (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
static void pl310_cache_sync(void)
{
writel(0, &pl310->pl310_cache_sync);
}
static void pl310_background_op_all_ways(u32 *op_reg)
{
u32 assoc_16, associativity, way_mask;
assoc_16 = readl(&pl310->pl310_aux_ctrl) &
PL310_AUX_CTRL_ASSOCIATIVITY_MASK;
if (assoc_16)
associativity = 16;
else
associativity = 8;
way_mask = (1 << associativity) - 1;
/* Invalidate all ways */
writel(way_mask, op_reg);
/* Wait for all ways to be invalidated */
while (readl(op_reg) && way_mask)
;
pl310_cache_sync();
}
void v7_outer_cache_inval_all(void)
{
pl310_background_op_all_ways(&pl310->pl310_inv_way);
}
void v7_outer_cache_flush_all(void)
{
pl310_background_op_all_ways(&pl310->pl310_clean_inv_way);
}
/* Flush(clean invalidate) memory from start to stop-1 */
void v7_outer_cache_flush_range(u32 start, u32 stop)
{
/* PL310 currently supports only 32 bytes cache line */
u32 pa, line_size = 32;
/*
* Align to the beginning of cache-line - this ensures that
* the first 5 bits are 0 as required by PL310 TRM
*/
start &= ~(line_size - 1);
for (pa = start; pa < stop; pa = pa + line_size)
writel(pa, &pl310->pl310_clean_inv_line_pa);
pl310_cache_sync();
}
/* invalidate memory from start to stop-1 */
void v7_outer_cache_inval_range(u32 start, u32 stop)
{
/* PL310 currently supports only 32 bytes cache line */
u32 pa, line_size = 32;
/*
* If start address is not aligned to cache-line do not
* invalidate the first cache-line
*/
if (start & (line_size - 1)) {
printf("ERROR: %s - start address is not aligned - 0x%08x\n",
__func__, start);
/* move to next cache line */
start = (start + line_size - 1) & ~(line_size - 1);
}
/*
* If stop address is not aligned to cache-line do not
* invalidate the last cache-line
*/
if (stop & (line_size - 1)) {
printf("ERROR: %s - stop address is not aligned - 0x%08x\n",
__func__, stop);
/* align to the beginning of this cache line */
stop &= ~(line_size - 1);
}
for (pa = start; pa < stop; pa = pa + line_size)
writel(pa, &pl310->pl310_inv_line_pa);
pl310_cache_sync();
}
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