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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2010
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* Heiko Schocher, DENX Software Engineering, hs@denx.de.
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*/
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#include <common.h>
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#include <cpu_func.h>
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#include <asm/cache.h>
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#include <asm/global_data.h>
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#include <asm/io.h>
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DECLARE_GLOBAL_DATA_PTR;
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const ulong patterns[] = { 0x00000000,
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0xFFFFFFFF,
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0xFF00FF00,
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0x0F0F0F0F,
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0xF0F0F0F0};
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const ulong NBR_OF_PATTERNS = sizeof(patterns) / sizeof(*patterns);
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const ulong OFFS_PATTERN = 3;
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const ulong REPEAT_PATTERN = 1000;
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void bootcount_store(ulong a)
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{
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ulong *save_addr;
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ulong size = 0;
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int i;
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for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
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size += gd->bd->bi_dram[i].size;
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save_addr = (ulong *)(size - BOOTCOUNT_ADDR);
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writel(a, save_addr);
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writel(CONFIG_SYS_BOOTCOUNT_MAGIC, &save_addr[1]);
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for (i = 0; i < REPEAT_PATTERN; i++)
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writel(patterns[i % NBR_OF_PATTERNS],
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&save_addr[i + OFFS_PATTERN]);
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/* Make sure the data is written to RAM */
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flush_dcache_range((ulong)&save_addr[0],
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(((ulong)&save_addr[REPEAT_PATTERN + OFFS_PATTERN] &
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~(ARCH_DMA_MINALIGN - 1)) + ARCH_DMA_MINALIGN));
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}
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ulong bootcount_load(void)
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{
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ulong *save_addr;
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ulong size = 0;
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ulong counter = 0;
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int i, tmp;
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for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
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size += gd->bd->bi_dram[i].size;
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save_addr = (ulong *)(size - BOOTCOUNT_ADDR);
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counter = readl(&save_addr[0]);
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/* Is the counter reliable, check in the big pattern for bit errors */
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for (i = 0; (i < REPEAT_PATTERN) && (counter != 0); i++) {
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tmp = readl(&save_addr[i + OFFS_PATTERN]);
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if (tmp != patterns[i % NBR_OF_PATTERNS])
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counter = 0;
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}
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return counter;
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}
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