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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 commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
51 lines
915 B
C
51 lines
915 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
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*/
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/*
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* This library provides CMOS (inside RTC SRAM) access routines at a very
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* early stage when driver model is not available yet. Only read access is
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* provided. The 16-bit/32-bit read are compatible with driver model RTC
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* uclass write ops, that data is stored in little-endian mode.
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*/
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#include <common.h>
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#include <asm/early_cmos.h>
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#include <asm/io.h>
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u8 cmos_read8(u8 addr)
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{
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outb(addr, CMOS_IO_PORT);
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return inb(CMOS_IO_PORT + 1);
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}
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u16 cmos_read16(u8 addr)
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{
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u16 value = 0;
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u16 data;
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int i;
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for (i = 0; i < sizeof(value); i++) {
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data = cmos_read8(addr + i);
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value |= data << (i << 3);
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}
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return value;
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}
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u32 cmos_read32(u8 addr)
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{
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u32 value = 0;
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u32 data;
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int i;
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for (i = 0; i < sizeof(value); i++) {
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data = cmos_read8(addr + i);
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value |= data << (i << 3);
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}
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return value;
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}
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