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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/kernel/memstate.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2013,2018 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
/** @file misc.H
* @brief Misc. Kernel functions and utilities.
*/
#ifndef __KERNEL_MEMSTATE_H
#define __KERNEL_MEMSTATE_H
#include <usr/vmmconst.h>
namespace KernelMemState
{
/* see mmio.h for scratch reg definitions */
enum MemLocation
{
MEM_CONTAINED_NR = 0x0,
MEM_CONTAINED_L3 = 0x8,
MEM_CONTAINED_MS = 0x4,
};
// This constants must be kept in sync with the Dump.pm debug tool.
enum MemSize
{
NO_MEM = 0x000,
HALF_CACHE = 0x004,
REDUCED_CACHE = 0x008,
FULL_CACHE = 0x00A,
FULL_MEM = (VMM_MEMORY_SIZE/MEGABYTE),
MAX_MEMORY = 0xFFF //max space allocated for size
};
struct MemState_t
{
union{
struct {
// 00:03 - Indicator of memory mode
uint64_t location:4; /**< Indicator of memory mode HostBoot
contained in L3 or mainstore */
// 04:51 - Current HRMOR
uint64_t hrmor:48; /**< Current HRMOR in MB */
// 52:63 - Size of active Hostboot memory
uint64_t size:12; /**< Size of the memory in MB */
};
uint64_t fullData; /**< Full double word */
};
} PACKED;
/** @fn setMemScratchReg
*
* @brief Sets the Hostboot memory location and size
*
* This is used to update the core scratch reg with the current
* location of hostboot memory and the size it is.
*
* @param[in] uint16_t - location of the memory (L3 or Mainstore)
* @param[in] uint32_t - size of the memory
*/
void setMemScratchReg( MemLocation i_location,
MemSize i_size );
};
#endif
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