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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 2013,2017 */
/* [+] 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
namespace KernelMemState
{
// hb_Mem_Location struct values are defined below.
/* see mmio.h for scratch reg definitions
Register Bit Definition:
- 0:7 - Indicator of memory mode
NOTE: having no bits on in this range indicated the memory is not ready.
- - 0b00000000 = Hostboot contained in L3
- - 0b00000001 = Hostboot expanded to mainstore
- 8:31 - Reserved/Unused
- 32:63 - Size of active Hostboot memory in MB
- - 0 = Hostboot is not ready yet.
- - 4 = Hostboot is using half a cache
- - 8 = Hostboot is using reduced cache
- - 10 = Hostboot is using the full cache
- - 48 = Hostboot is using 48 MB of mainstore*/
enum MemLocation
{
MEM_CONTAINED_NR = 0x0,
MEM_CONTAINED_L3 = 0x80,
MEM_CONTAINED_MS = 0x40,
};
// This constants must be kept in sync with the Dump.pm debug tool.
enum MemSize
{
NO_MEM = 0x0,
HALF_CACHE = 0x00000004,
REDUCED_CACHE = 0x00000008,
FULL_CACHE = 0x0000000A,
MS_48MEG = 0x00000030,
};
struct mem_location
{
union{
struct {
uint64_t memMode:8; /**< indicator of memory mode HostBoot
contained in l3 or mainstore */
uint64_t reserved:24; /**< reserved */
uint64_t memSize:32; /**< Size of the memory */
};
uint64_t Scratch6Data; /**< Full double word */
};
};
/** @fn set
*
* @brief Sets the Hostboot memory location and size in the scratch
* register 6
*
* This is used to update the core scratch reg 6 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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