mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
63 lines
1.5 KiB
C
63 lines
1.5 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 <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(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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