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86dc480d73
The loop implemented in the code is supposed to check whether the
PL310 operation register has any bit from the mask set. Currently,
the code checks whether the PL310 operation register has any bit
set AND whether the mask is non-zero, which is incorrect. Fix the
conditional.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Tom Rini <trini@konsulko.com>
Fixes: 93bc21930a ("armv7: add PL310 support to u-boot")
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Dinh Nguyen <dinguyen@kernel.org>
101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2010
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* Texas Instruments, <www.ti.com>
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* Aneesh V <aneesh@ti.com>
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*/
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#include <linux/types.h>
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#include <asm/io.h>
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#include <asm/armv7.h>
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#include <asm/pl310.h>
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#include <config.h>
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#include <common.h>
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struct pl310_regs *const pl310 = (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
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static void pl310_cache_sync(void)
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{
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writel(0, &pl310->pl310_cache_sync);
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}
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static void pl310_background_op_all_ways(u32 *op_reg)
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{
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u32 assoc_16, associativity, way_mask;
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assoc_16 = readl(&pl310->pl310_aux_ctrl) &
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PL310_AUX_CTRL_ASSOCIATIVITY_MASK;
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if (assoc_16)
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associativity = 16;
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else
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associativity = 8;
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way_mask = (1 << associativity) - 1;
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/* Invalidate all ways */
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writel(way_mask, op_reg);
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/* Wait for all ways to be invalidated */
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while (readl(op_reg) & way_mask)
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;
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pl310_cache_sync();
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}
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void v7_outer_cache_inval_all(void)
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{
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pl310_background_op_all_ways(&pl310->pl310_inv_way);
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}
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void v7_outer_cache_flush_all(void)
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{
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pl310_background_op_all_ways(&pl310->pl310_clean_inv_way);
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}
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/* Flush(clean invalidate) memory from start to stop-1 */
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void v7_outer_cache_flush_range(u32 start, u32 stop)
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{
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/* PL310 currently supports only 32 bytes cache line */
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u32 pa, line_size = 32;
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/*
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* Align to the beginning of cache-line - this ensures that
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* the first 5 bits are 0 as required by PL310 TRM
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*/
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start &= ~(line_size - 1);
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for (pa = start; pa < stop; pa = pa + line_size)
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writel(pa, &pl310->pl310_clean_inv_line_pa);
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pl310_cache_sync();
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}
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/* invalidate memory from start to stop-1 */
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void v7_outer_cache_inval_range(u32 start, u32 stop)
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{
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/* PL310 currently supports only 32 bytes cache line */
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u32 pa, line_size = 32;
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/*
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* If start address is not aligned to cache-line do not
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* invalidate the first cache-line
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*/
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if (start & (line_size - 1)) {
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printf("ERROR: %s - start address is not aligned - 0x%08x\n",
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__func__, start);
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/* move to next cache line */
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start = (start + line_size - 1) & ~(line_size - 1);
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}
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/*
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* If stop address is not aligned to cache-line do not
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* invalidate the last cache-line
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*/
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if (stop & (line_size - 1)) {
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printf("ERROR: %s - stop address is not aligned - 0x%08x\n",
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__func__, stop);
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/* align to the beginning of this cache line */
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stop &= ~(line_size - 1);
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}
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for (pa = start; pa < stop; pa = pa + line_size)
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writel(pa, &pl310->pl310_inv_line_pa);
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pl310_cache_sync();
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}
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