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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/kernel/misc.H $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* COPYRIGHT International Business Machines Corp. 2011,2013 */
/* */
/* p1 */
/* */
/* Object Code Only (OCO) source materials */
/* Licensed Internal Code Source Materials */
/* IBM HostBoot Licensed Internal Code */
/* */
/* The source code for this program is not published or otherwise */
/* divested of its trade secrets, irrespective of what has been */
/* deposited with the U.S. Copyright Office. */
/* */
/* Origin: 30 */
/* */
/* 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.
/* Core Scratch 6 (Scom 0x10013289) will be used to indicate the memory
state
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 the full cache
- - 32 = Hostboot is using 32 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,
FULL_CACHE = 0x00000008,
MS_32MEG = 0x00000020,
PRE_SECURE_BOOT = 0x000000FF,
};
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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