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arch/ppc64: Add <arch/mmio.h> stubs

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The work may be incomplete, we only have an emulation
power8 at the moment in the tree.

Change-Id: Icdaa0995c8610dcc636923cc79b8455dfaeaa057
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31996
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Timothy Pearson <tpearson@raptorengineering.com>
This commit is contained in:
Kyösti Mälkki
2019-03-20 20:38:00 +02:00
committed by Timothy Pearson
parent fb83ff1a8b
commit ceb89fb454
1 changed files with 53 additions and 0 deletions
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53
src/arch/ppc64/include/arch/mmio.h Normal file
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/*
* 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.
*/
#ifndef __ARCH_MMIO_H__
#define __ARCH_MMIO_H__
#include <stdint.h>
/* NOTE: These are just stubs; if the architecture requires special
* care to avoid posted writes or cachelines, it is not yet done here.
*/
static inline uint8_t read8(const volatile void *addr)
{
return *(volatile uint8_t *)addr;
}
static inline uint16_t read16(const volatile void *addr)
{
return *(volatile uint16_t *)addr;
}
static inline uint32_t read32(const volatile void *addr)
{
return *(volatile uint32_t *)addr;
}
static inline void write8(volatile void *addr, uint8_t val)
{
*(volatile uint8_t *)addr = val;
}
static inline void write16(volatile void *addr, uint16_t val)
{
*(volatile uint16_t *)addr = val;
}
static inline void write32(volatile void *addr, uint32_t val)
{
*(volatile uint32_t *)addr = val;
}
#endif /* __ARCH_MMIO_H__ */