coreboot
coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.
rcba.h
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/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef SOUTHBRIDGE_INTEL_DEFAULT_RCBA_H
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#define SOUTHBRIDGE_INTEL_DEFAULT_RCBA_H
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#define DEFAULT_RCBA ((u8 *)CONFIG_FIXED_RCBA_MMIO_BASE)
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/* Root Complex Register Block */
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#define RCBA 0xf0
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#define RCBA_ENABLE 0x01
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#define RCBA8(x) (*((volatile u8 *)(DEFAULT_RCBA + (x))))
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#define RCBA16(x) (*((volatile u16 *)(DEFAULT_RCBA + (x))))
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#define RCBA32(x) (*((volatile u32 *)(DEFAULT_RCBA + (x))))
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#define RCBA64(x) (*((volatile u64 *)(DEFAULT_RCBA + (x))))
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#define RCBA_AND_OR(bits, x, and, or) \
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(RCBA##bits(x) = ((RCBA##bits(x) & (and)) | (or)))
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#define RCBA8_AND_OR(x, and, or) RCBA_AND_OR(8, x, and, or)
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#define RCBA16_AND_OR(x, and, or) RCBA_AND_OR(16, x, and, or)
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#define RCBA32_AND_OR(x, and, or) RCBA_AND_OR(32, x, and, or)
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#define RCBA32_OR(x, or) RCBA_AND_OR(32, x, ~0UL, or)
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#endif
/* SOUTHBRIDGE_INTEL_DEFAULT_RCBA_H */
src
southbridge
intel
common
rcba.h
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