GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

include: introduce update* for mmio operations 

Introduce update* as equivalent of pci_update* for mmio operations.

Change-Id: I9f188d586c09ee9f1e17290563f68970603204fb
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36596
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Michael Niewöhner 2019-11-03 10:26:04 +01:00 committed by Patrick Georgi
parent e919390f47
commit f0564a9c44
1 changed files with 45 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
src/include/mmio.h Normal file
View File

@ -0,0 +1,45 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/*
* mmio.h provides update*() as well as read/write*() from arch/mmio.h
*/
#ifndef __MMIO_H__
#define __MMIO_H__
#include <arch/mmio.h>
#include <stdint.h>
static __always_inline void update8(volatile void *addr, uint8_t mask, uint8_t or)
{
uint8_t reg = read8(addr);
reg = (reg & mask) | or;
write8(addr, reg);
}
static __always_inline void update16(volatile void *addr, uint16_t mask, uint16_t or)
{
uint16_t reg = read16(addr);
reg = (reg & mask) | or;
write16(addr, reg);
}
static __always_inline void update32(volatile void *addr, uint32_t mask, uint32_t or)
{
uint32_t reg = read32(addr);
reg = (reg & mask) | or;
write32(addr, reg);
}
#endif /* __MMIO_H__ */