1391 lines
49 KiB
C
1391 lines
49 KiB
C
/*
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* Copyright - Galileo technology.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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*
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* written or collected and sometimes rewritten by
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* Ingo Assmus <ingo.assmus@keymile.com>
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*
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*/
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#include <common.h>
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#include "../include/core.h"
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#include "../include/memory.h"
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/*******************************************************************************
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* memoryGetBankBaseAddress - Returns the base address of a memory bank.
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* DESCRIPTION:
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* This function returns the base address of one of the SDRAM’s memory
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* banks. There are 4 memory banks and each one represents one DIMM side.
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* INPUT:
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* MEMORY_BANK bank - Selects one of the four banks as defined in Memory.h.
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* OUTPUT:
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* None.
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* RETURN:
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* 32 bit Memory bank base address.
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*******************************************************************************/
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static unsigned long memoryGetBankRegOffset (MEMORY_BANK bank)
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{
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switch (bank) {
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case BANK0:
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return SCS_0_LOW_DECODE_ADDRESS;
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case BANK1:
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return SCS_1_LOW_DECODE_ADDRESS;
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case BANK2:
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return SCS_2_LOW_DECODE_ADDRESS;
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case BANK3:
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return SCS_3_LOW_DECODE_ADDRESS;
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}
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return SCS_0_LOW_DECODE_ADDRESS; /* default value */
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}
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unsigned int memoryGetBankBaseAddress (MEMORY_BANK bank)
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{
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unsigned int base;
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unsigned int regOffset = memoryGetBankRegOffset (bank);
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GT_REG_READ (regOffset, &base);
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base = base << 16; /* MV6436x */
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return base;
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}
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/*******************************************************************************
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* memoryGetDeviceBaseAddress - Returns the base address of a device.
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* DESCRIPTION:
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* This function returns the base address of a device on the system. There
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* are 5 possible devices (0 - 4 and one boot device) as defined in
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* gtMemory.h. Each of the device parameters is maped to one of the CS
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* (Devices chip selects) base address register.
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* INPUT:
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* device - Selects one of the five devices as defined in Memory.h.
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* OUTPUT:
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* None.
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* RETURN:
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* 32 bit Device base address.
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*
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*******************************************************************************/
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static unsigned int memoryGetDeviceRegOffset (DEVICE device)
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{
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switch (device) {
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case DEVICE0:
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return CS_0_LOW_DECODE_ADDRESS;
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case DEVICE1:
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return CS_1_LOW_DECODE_ADDRESS;
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case DEVICE2:
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return CS_2_LOW_DECODE_ADDRESS;
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case DEVICE3:
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return CS_3_LOW_DECODE_ADDRESS;
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case BOOT_DEVICE:
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return BOOTCS_LOW_DECODE_ADDRESS;
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}
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return CS_0_LOW_DECODE_ADDRESS; /* default value */
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}
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unsigned int memoryGetDeviceBaseAddress (DEVICE device)
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{
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unsigned int regBase;
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unsigned int regOffset = memoryGetDeviceRegOffset (device);
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GT_REG_READ (regOffset, ®Base);
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regBase = regBase << 16; /* MV6436x */
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return regBase;
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}
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/*******************************************************************************
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* MemoryGetPciBaseAddr - Returns the base address of a PCI window.
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* DESCRIPTION:
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* This function returns the base address of a PCI window. There are 5
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* possible PCI windows (memory 0 - 3 and one for I/O) for each PCI
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* interface as defined in gtMemory.h, used by the CPU's address decoding
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* mechanism.
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* New in MV6436x
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* INPUT:
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* pciWindow - Selects one of the PCI windows as defined in Memory.h.
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* OUTPUT:
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* None.
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* RETURN:
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* 32 bit PCI window base address.
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*******************************************************************************/
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unsigned int MemoryGetPciBaseAddr (PCI_MEM_WINDOW pciWindow)
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{
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unsigned int baseAddrReg, base;
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switch (pciWindow) {
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case PCI_0_IO:
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baseAddrReg = PCI_0I_O_LOW_DECODE_ADDRESS; /*PCI_0_IO_BASE_ADDR; */
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break;
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case PCI_0_MEM0:
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baseAddrReg = PCI_0MEMORY0_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY0_BASE_ADDR; */
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break;
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case PCI_0_MEM1:
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baseAddrReg = PCI_0MEMORY1_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY1_BASE_ADDR; */
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break;
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case PCI_0_MEM2:
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baseAddrReg = PCI_0MEMORY2_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY2_BASE_ADDR; */
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break;
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case PCI_0_MEM3:
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baseAddrReg = PCI_0MEMORY3_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY3_BASE_ADDR; */
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break;
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#ifdef INCLUDE_PCI_1
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case PCI_1_IO:
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baseAddrReg = PCI_1I_O_LOW_DECODE_ADDRESS; /*PCI_1_IO_BASE_ADDR; */
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break;
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case PCI_1_MEM0:
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baseAddrReg = PCI_1MEMORY0_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY0_BASE_ADDR; */
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break;
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case PCI_1_MEM1:
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baseAddrReg = PCI_1MEMORY1_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY1_BASE_ADDR; */
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break;
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case PCI_1_MEM2:
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baseAddrReg = PCI_1MEMORY2_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY2_BASE_ADDR; */
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break;
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case PCI_1_MEM3:
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baseAddrReg = PCI_1MEMORY3_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY3_BASE_ADDR; */
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break;
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#endif /* INCLUDE_PCI_1 */
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default:
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return 0xffffffff;
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}
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GT_REG_READ (baseAddrReg, &base);
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return (base << 16);
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}
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/*******************************************************************************
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* memoryGetBankSize - Returns the size of a memory bank.
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* DESCRIPTION:
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* This function returns the size of memory bank as described in
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* 'gtMemoryGetBankBaseAddress' function.
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* INPUT:
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* bank - Selects one of the four banks as defined in Memory.h.
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* OUTPUT:
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* None.
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* RETURN:
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* 32 bit size memory bank size or 0 for a closed or non populated bank.
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*
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*******************************************************************************/
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unsigned int memoryGetBankSize (MEMORY_BANK bank)
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{
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unsigned int sizeReg, size;
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MEMORY_WINDOW window;
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switch (bank) {
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case BANK0:
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sizeReg = SCS_0_HIGH_DECODE_ADDRESS; /* CS_0_SIZE; */
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window = CS_0_WINDOW;
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break;
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case BANK1:
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sizeReg = SCS_1_HIGH_DECODE_ADDRESS; /* CS_1_SIZE; */
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window = CS_1_WINDOW;
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break;
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case BANK2:
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sizeReg = SCS_2_HIGH_DECODE_ADDRESS; /* CS_2_SIZE; */
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window = CS_2_WINDOW;
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break;
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case BANK3:
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sizeReg = SCS_3_HIGH_DECODE_ADDRESS; /* CS_3_SIZE; */
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window = CS_3_WINDOW;
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break;
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default:
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return 0;
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break;
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}
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/* If the window is closed, a size of 0 is returned */
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if (MemoryGetMemWindowStatus (window) != MEM_WINDOW_ENABLED)
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return 0;
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GT_REG_READ (sizeReg, &size);
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size = ((size << 16) | 0xffff) + 1;
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return size;
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}
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/*******************************************************************************
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* memoryGetDeviceSize - Returns the size of a device memory space.
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* DESCRIPTION:
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* This function returns the memory space size of a given device.
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* INPUT:
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* device - Selects one of the five devices as defined in Memory.h.
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* OUTPUT:
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* None.
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* RETURN:
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* 32 bit size of a device memory space.
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*******************************************************************************/
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unsigned int memoryGetDeviceSize (DEVICE device)
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{
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unsigned int sizeReg, size;
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MEMORY_WINDOW window;
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switch (device) {
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case DEVICE0:
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sizeReg = CS_0_HIGH_DECODE_ADDRESS; /*DEV_CS0_SIZE; */
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window = DEVCS_0_WINDOW;
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break;
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case DEVICE1:
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sizeReg = CS_1_HIGH_DECODE_ADDRESS; /*DEV_CS1_SIZE; */
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window = DEVCS_1_WINDOW;
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break;
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case DEVICE2:
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sizeReg = CS_2_HIGH_DECODE_ADDRESS; /*DEV_CS2_SIZE; */
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window = DEVCS_2_WINDOW;
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break;
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case DEVICE3:
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sizeReg = CS_3_HIGH_DECODE_ADDRESS; /*DEV_CS3_SIZE; */
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window = DEVCS_3_WINDOW;
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break;
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case BOOT_DEVICE:
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sizeReg = BOOTCS_HIGH_DECODE_ADDRESS; /*BOOTCS_SIZE; */
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window = BOOT_CS_WINDOW;
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break;
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default:
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return 0;
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break;
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}
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/* If the window is closed, a size of 0 is returned */
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if (MemoryGetMemWindowStatus (window) != MEM_WINDOW_ENABLED)
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return 0;
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GT_REG_READ (sizeReg, &size);
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size = ((size << 16) | 0xffff) + 1;
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return size;
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}
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/*******************************************************************************
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* MemoryGetPciWindowSize - Returns the size of a PCI memory window.
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* DESCRIPTION:
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* This function returns the size of a PCI window.
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* INPUT:
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* pciWindow - Selects one of the PCI memory windows as defined in
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* Memory.h.
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* OUTPUT:
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* None.
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* RETURN:
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* 32 bit size of a PCI memory window.
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*******************************************************************************/
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unsigned int MemoryGetPciWindowSize (PCI_MEM_WINDOW pciWindow)
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{
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unsigned int sizeReg, size;
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switch (pciWindow) {
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case PCI_0_IO:
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sizeReg = PCI_0I_O_HIGH_DECODE_ADDRESS; /*PCI_0_IO_SIZE; */
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break;
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case PCI_0_MEM0:
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sizeReg = PCI_0MEMORY0_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY0_SIZE; */
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break;
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case PCI_0_MEM1:
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sizeReg = PCI_0MEMORY1_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY1_SIZE; */
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break;
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case PCI_0_MEM2:
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sizeReg = PCI_0MEMORY2_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY2_SIZE; */
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break;
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case PCI_0_MEM3:
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sizeReg = PCI_0MEMORY3_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY3_SIZE; */
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break;
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#ifdef INCLUDE_PCI_1
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case PCI_1_IO:
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sizeReg = PCI_1I_O_HIGH_DECODE_ADDRESS; /*PCI_1_IO_SIZE; */
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break;
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case PCI_1_MEM0:
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sizeReg = PCI_1MEMORY0_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY0_SIZE; */
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break;
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case PCI_1_MEM1:
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sizeReg = PCI_1MEMORY1_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY1_SIZE; */
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break;
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case PCI_1_MEM2:
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sizeReg = PCI_1MEMORY2_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY2_SIZE; */
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break;
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case PCI_1_MEM3:
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sizeReg = PCI_1MEMORY3_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY3_SIZE; */
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break;
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#endif /* INCLUDE_PCI_1 */
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default:
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return 0x0;
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}
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/* If the memory window is disabled, retrun size = 0 */
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if (MemoryGetMemWindowStatus (PCI_0_IO_WINDOW << pciWindow)
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== MEM_WINDOW_DISABLED)
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return 0;
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GT_REG_READ (sizeReg, &size);
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size = ((size << 16) | 0xffff) + 1;
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return size;
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}
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/*******************************************************************************
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* memoryGetDeviceWidth - Returns the width of a given device.
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* DESCRIPTION:
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* The MV's device interface supports up to 32 Bit wide devices. A device
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* can have a 1, 2, 4 or 8 Bytes data width. This function returns the
|
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* width of a device as defined by the user or the operating system.
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* INPUT:
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* device - Selects one of the five devices as defined in Memory.h.
|
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* OUTPUT:
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* None.
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||
* RETURN:
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* Device width in Bytes (1,2,4 or 8), 0 if error had occurred.
|
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*******************************************************************************/
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unsigned int memoryGetDeviceWidth (DEVICE device)
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{
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unsigned int width;
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unsigned int regValue;
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GT_REG_READ (DEVICE_BANK0PARAMETERS + device * 4, ®Value);
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width = (regValue & (BIT20 | BIT21)) >> 20;
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return (BIT0 << width);
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}
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/*******************************************************************************
|
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* memoryMapBank - Set new base address and size for one of the memory
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* banks.
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*
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* DESCRIPTION:
|
||
* The CPU interface address decoding map consists of 21 address windows
|
||
* for the different devices (e.g. CS[3:0] ,PCI0 Mem 0/1/2/3...). Each
|
||
* window can have a minimum of 1Mbytes of address space, and up to 4Gbyte
|
||
* space. Each address window is defined by two registers - base and size.
|
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* The CPU address is compared with the values in the various CPU windows
|
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* until a match is found and the address is than targeted to that window.
|
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* This function sets new base and size for one the memory banks
|
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* (CS0 - CS3). It is the programmer`s responsibility to make sure that
|
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* there are no conflicts with other memory spaces. When two memory spaces
|
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* overlap, the MV’s behavior is not defined .If a bank needs to be closed,
|
||
* set the ’bankLength’ parameter size to 0x0.
|
||
*
|
||
* INPUT:
|
||
* bank - One of the memory banks (CS0-CS3) as defined in gtMemory.h.
|
||
* bankBase - The memory bank base address.
|
||
* bankLength - The memory bank size. This function will decrement the
|
||
* 'bankLength' parameter by one and then check if the size is
|
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* valid. A valid size must be programed from LSB to MSB as
|
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* sequence of ‘1’s followed by sequence of ‘0’s.
|
||
* To close a memory window simply set the size to 0.
|
||
* NOTE!!!
|
||
* The size must be in 64Kbyte granularity.
|
||
* The base address must be aligned to the size.
|
||
* OUTPUT:
|
||
* None.
|
||
* RETURN:
|
||
* False for invalid size, true otherwise.
|
||
*
|
||
* CAUTION: PCI_functions must be implemented later To_do !!!!!!!!!!!!!!!!!
|
||
*
|
||
*******************************************************************************/
|
||
|
||
bool memoryMapBank (MEMORY_BANK bank, unsigned int bankBase,
|
||
unsigned int bankLength)
|
||
{
|
||
unsigned int newBase, newSize, baseReg, sizeReg, temp, rShift;
|
||
|
||
/* PCI_INTERNAL_BAR pciBAR; */
|
||
|
||
switch (bank) {
|
||
case BANK0:
|
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baseReg = SCS_0_LOW_DECODE_ADDRESS; /*CS_0_BASE_ADDR; */
|
||
sizeReg = SCS_0_HIGH_DECODE_ADDRESS; /*CS_0_SIZE; */
|
||
/* pciBAR = PCI_CS0_BAR; */
|
||
break;
|
||
case BANK1:
|
||
baseReg = SCS_1_LOW_DECODE_ADDRESS; /*CS_1_BASE_ADDR; */
|
||
sizeReg = SCS_1_HIGH_DECODE_ADDRESS; /*CS_1_SIZE; */
|
||
/* pciBAR = SCS_0_HIGH_DECODE_ADDRESS; */ /*PCI_CS1_BAR; */
|
||
break;
|
||
case BANK2:
|
||
baseReg = SCS_2_LOW_DECODE_ADDRESS; /*CS_2_BASE_ADDR; */
|
||
sizeReg = SCS_2_HIGH_DECODE_ADDRESS; /*CS_2_SIZE; */
|
||
/* pciBAR = PCI_CS2_BAR;*/
|
||
break;
|
||
case BANK3:
|
||
baseReg = SCS_3_LOW_DECODE_ADDRESS; /*CS_3_BASE_ADDR; */
|
||
sizeReg = SCS_3_HIGH_DECODE_ADDRESS; /*CS_3_SIZE; */
|
||
/* pciBAR = PCI_CS3_BAR; */
|
||
break;
|
||
default:
|
||
return false;
|
||
}
|
||
/* If the size is 0, the window will be disabled */
|
||
if (bankLength == 0) {
|
||
MemoryDisableWindow (CS_0_WINDOW << bank);
|
||
/* Disable the BAR from the PCI slave side */
|
||
/* gtPci0DisableInternalBAR(pciBAR); */
|
||
/* gtPci1DisableInternalBAR(pciBAR); */
|
||
return true;
|
||
}
|
||
/* The base address must be aligned to the size */
|
||
if ((bankBase % bankLength) != 0) {
|
||
return false;
|
||
}
|
||
if (bankLength >= MINIMUM_MEM_BANK_SIZE) {
|
||
newBase = bankBase >> 16;
|
||
newSize = bankLength >> 16;
|
||
/* Checking that the size is a sequence of '1' followed by a
|
||
sequence of '0' starting from LSB to MSB. */
|
||
temp = newSize - 1;
|
||
for (rShift = 0; rShift < 16; rShift++) {
|
||
temp = temp >> rShift;
|
||
if ((temp & 0x1) == 0) { /* Either we got to the last '1' */
|
||
/* or the size is not valid */
|
||
if (temp > 0x0)
|
||
return false;
|
||
else
|
||
break;
|
||
}
|
||
}
|
||
#ifdef DEBUG
|
||
{
|
||
unsigned int oldBase, oldSize;
|
||
|
||
GT_REG_READ (baseReg, &oldBase);
|
||
GT_REG_READ (sizeReg + 8, &oldSize);
|
||
|
||
printf ("b%d Base:%x Size:%x -> Base:%x Size:%x\n",
|
||
bank, oldBase, oldSize, newBase, newSize);
|
||
}
|
||
#endif
|
||
/* writing the new values */
|
||
GT_REG_WRITE (baseReg, newBase);
|
||
GT_REG_WRITE (sizeReg, newSize - 1);
|
||
/* Enable back the window */
|
||
MemoryEnableWindow (CS_0_WINDOW << bank);
|
||
/* Enable the BAR from the PCI slave side */
|
||
/* gtPci0EnableInternalBAR(pciBAR); */
|
||
/* gtPci1EnableInternalBAR(pciBAR); */
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
|
||
/*******************************************************************************
|
||
* memoryMapDeviceSpace - Set new base address and size for one of the device
|
||
* windows.
|
||
*
|
||
* DESCRIPTION:
|
||
* The CPU interface address decoding map consists of 21 address windows
|
||
* for the different devices (e.g. CS[3:0] ,PCI0 Mem 0/1/2/3...). Each
|
||
* window can have a minimum of 1Mbytes of address space, and up to 4Gbyte
|
||
* space. Each address window is defined by two registers - base and size.
|
||
* The CPU address is compared with the values in the various CPU windows
|
||
* until a match is found and the address is than targeted to that window.
|
||
* This function sets new base and size for one the device windows
|
||
* (DEV_CS0 - DEV_CS3). It is the programmer`s responsibility to make sure
|
||
* that there are no conflicts with other memory spaces. When two memory
|
||
* spaces overlap, the MV’s behavior is not defined .If a device window
|
||
* needs to be closed, set the 'deviceLength' parameter size to 0x0.
|
||
*
|
||
* INPUT:
|
||
* device - One of the device windows (DEV_CS0-DEV_CS3) as
|
||
* defined in gtMemory.h.
|
||
* deviceBase - The device window base address.
|
||
* deviceLength - The device window size. This function will decrement
|
||
* the 'deviceLength' parameter by one and then
|
||
* check if the size is valid. A valid size must be
|
||
* programed from LSB to MSB as sequence of ‘1’s
|
||
* followed by sequence of ‘0’s.
|
||
* To close a memory window simply set the size to 0.
|
||
*
|
||
* NOTE!!!
|
||
* The size must be in 64Kbyte granularity.
|
||
* The base address must be aligned to the size.
|
||
*
|
||
* OUTPUT:
|
||
* None.
|
||
*
|
||
* RETURN:
|
||
* False for invalid size, true otherwise.
|
||
*
|
||
* CAUTION: PCI_functions must be implemented later To_do !!!!!!!!!!!!!!!!!
|
||
*
|
||
*******************************************************************************/
|
||
|
||
bool memoryMapDeviceSpace (DEVICE device, unsigned int deviceBase,
|
||
unsigned int deviceLength)
|
||
{
|
||
unsigned int newBase, newSize, baseReg, sizeReg, temp, rShift;
|
||
|
||
/* PCI_INTERNAL_BAR pciBAR;*/
|
||
|
||
switch (device) {
|
||
case DEVICE0:
|
||
baseReg = CS_0_LOW_DECODE_ADDRESS; /*DEV_CS0_BASE_ADDR; */
|
||
sizeReg = CS_0_HIGH_DECODE_ADDRESS; /*DEV_CS0_SIZE; */
|
||
/* pciBAR = PCI_DEV_CS0_BAR; */
|
||
break;
|
||
case DEVICE1:
|
||
baseReg = CS_1_LOW_DECODE_ADDRESS; /*DEV_CS1_BASE_ADDR; */
|
||
sizeReg = CS_1_HIGH_DECODE_ADDRESS; /*DEV_CS1_SIZE; */
|
||
/* pciBAR = PCI_DEV_CS1_BAR; */
|
||
break;
|
||
case DEVICE2:
|
||
baseReg = CS_2_LOW_DECODE_ADDRESS; /*DEV_CS2_BASE_ADDR; */
|
||
sizeReg = CS_2_HIGH_DECODE_ADDRESS; /*DEV_CS2_SIZE; */
|
||
/* pciBAR = PCI_DEV_CS2_BAR; */
|
||
break;
|
||
case DEVICE3:
|
||
baseReg = CS_3_LOW_DECODE_ADDRESS; /*DEV_CS3_BASE_ADDR; */
|
||
sizeReg = CS_3_HIGH_DECODE_ADDRESS; /*DEV_CS3_SIZE; */
|
||
/* pciBAR = PCI_DEV_CS3_BAR; */
|
||
break;
|
||
case BOOT_DEVICE:
|
||
baseReg = BOOTCS_LOW_DECODE_ADDRESS; /*BOOTCS_BASE_ADDR; */
|
||
sizeReg = BOOTCS_HIGH_DECODE_ADDRESS; /*BOOTCS_SIZE; */
|
||
/* pciBAR = PCI_BOOT_CS_BAR; */
|
||
break;
|
||
default:
|
||
return false;
|
||
}
|
||
if (deviceLength == 0) {
|
||
MemoryDisableWindow (DEVCS_0_WINDOW << device);
|
||
/* Disable the BAR from the PCI slave side */
|
||
/* gtPci0DisableInternalBAR(pciBAR); */
|
||
/* gtPci1DisableInternalBAR(pciBAR); */
|
||
return true;
|
||
}
|
||
/* The base address must be aligned to the size */
|
||
if ((deviceBase % deviceLength) != 0) {
|
||
return false;
|
||
}
|
||
if (deviceLength >= MINIMUM_DEVICE_WINDOW_SIZE) {
|
||
newBase = deviceBase >> 16;
|
||
newSize = deviceLength >> 16;
|
||
/* Checking that the size is a sequence of '1' followed by a
|
||
sequence of '0' starting from LSB to MSB. */
|
||
temp = newSize - 1;
|
||
for (rShift = 0; rShift < 16; rShift++) {
|
||
temp = temp >> rShift;
|
||
if ((temp & 0x1) == 0) { /* Either we got to the last '1' */
|
||
/* or the size is not valid */
|
||
if (temp > 0x0)
|
||
return false;
|
||
else
|
||
break;
|
||
}
|
||
}
|
||
/* writing the new values */
|
||
GT_REG_WRITE (baseReg, newBase);
|
||
GT_REG_WRITE (sizeReg, newSize - 1);
|
||
MemoryEnableWindow (DEVCS_0_WINDOW << device);
|
||
/* Enable the BAR from the PCI slave side */
|
||
/* gtPci0EnableInternalBAR(pciBAR); */
|
||
/* gtPci1EnableInternalBAR(pciBAR); */
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* MemorySetPciWindow - Set new base address and size for one of the PCI
|
||
* windows.
|
||
*
|
||
* DESCRIPTION:
|
||
* The CPU interface address decoding map consists of 21 address windows
|
||
* for the different devices (e.g. CS[3:0] ,PCI0 Mem 0/1/2/3...). Each
|
||
* window can have a minimum of 1Mbytes of address space, and up to 4Gbyte
|
||
* space. Each address window is defined by two registers - base and size.
|
||
* The CPU address is compared with the values in the various CPU windows
|
||
* until a match is found and the address is than targeted to that window.
|
||
* This function sets new base and size for one the PCI windows
|
||
* (PCI memory0/1/2..). It is the programmer`s responsibility to make sure
|
||
* that there are no conflicts with other memory spaces. When two memory
|
||
* spaces overlap, the MV’s behavior is not defined .If a PCI window
|
||
* needs to be closed, set the 'pciWindowSize' parameter size to 0x0.
|
||
*
|
||
* INPUT:
|
||
* pciWindow - One of the PCI windows as defined in gtMemory.h.
|
||
* pciWindowBase - The PCI window base address.
|
||
* pciWindowSize - The PCI window size. This function will decrement the
|
||
* 'pciWindowSize' parameter by one and then check if the
|
||
* size is valid. A valid size must be programed from LSB
|
||
* to MSB as sequence of ‘1’s followed by sequence of ‘0’s.
|
||
* To close a memory window simply set the size to 0.
|
||
*
|
||
* NOTE!!!
|
||
* The size must be in 64Kbyte granularity.
|
||
* The base address must be aligned to the size.
|
||
*
|
||
* OUTPUT:
|
||
* None.
|
||
*
|
||
* RETURN:
|
||
* False for invalid size, true otherwise.
|
||
*
|
||
*******************************************************************************/
|
||
bool memorySetPciWindow (PCI_MEM_WINDOW pciWindow, unsigned int pciWindowBase,
|
||
unsigned int pciWindowSize)
|
||
{
|
||
unsigned int currentLow, baseAddrReg, sizeReg, temp, rShift;
|
||
|
||
switch (pciWindow) {
|
||
case PCI_0_IO:
|
||
baseAddrReg = PCI_1I_O_LOW_DECODE_ADDRESS; /*PCI_0_IO_BASE_ADDR; */
|
||
sizeReg = PCI_0I_O_HIGH_DECODE_ADDRESS; /*PCI_0_IO_SIZE; */
|
||
break;
|
||
case PCI_0_MEM0:
|
||
baseAddrReg = PCI_0MEMORY0_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY0_BASE_ADDR; */
|
||
sizeReg = PCI_0MEMORY0_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY0_SIZE; */
|
||
break;
|
||
case PCI_0_MEM1:
|
||
baseAddrReg = PCI_0MEMORY1_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY1_BASE_ADDR; */
|
||
sizeReg = PCI_0MEMORY1_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY1_SIZE; */
|
||
break;
|
||
case PCI_0_MEM2:
|
||
baseAddrReg = PCI_0MEMORY2_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY2_BASE_ADDR; */
|
||
sizeReg = PCI_0MEMORY2_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY2_SIZE; */
|
||
break;
|
||
case PCI_0_MEM3:
|
||
baseAddrReg = PCI_0MEMORY3_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY3_BASE_ADDR; */
|
||
sizeReg = PCI_0MEMORY3_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY3_SIZE; */
|
||
break;
|
||
#ifdef INCLUDE_PCI_1
|
||
case PCI_1_IO:
|
||
baseAddrReg = PCI_1I_O_LOW_DECODE_ADDRESS; /*PCI_1_IO_BASE_ADDR; */
|
||
sizeReg = PCI_1I_O_HIGH_DECODE_ADDRESS; /*PCI_1_IO_SIZE; */
|
||
break;
|
||
case PCI_1_MEM0:
|
||
baseAddrReg = PCI_1MEMORY0_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY0_BASE_ADDR; */
|
||
sizeReg = PCI_1MEMORY0_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY0_SIZE; */
|
||
break;
|
||
case PCI_1_MEM1:
|
||
baseAddrReg = PCI_1MEMORY1_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY1_BASE_ADDR; */
|
||
sizeReg = PCI_1MEMORY1_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY1_SIZE; */
|
||
break;
|
||
case PCI_1_MEM2:
|
||
baseAddrReg = PCI_1MEMORY2_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY2_BASE_ADDR; */
|
||
sizeReg = PCI_1MEMORY2_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY2_SIZE; */
|
||
break;
|
||
case PCI_1_MEM3:
|
||
baseAddrReg = PCI_1MEMORY3_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY3_BASE_ADDR; */
|
||
sizeReg = PCI_1MEMORY3_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY3_SIZE; */
|
||
break;
|
||
#endif /* INCLUDE_PCI_1 */
|
||
default:
|
||
return false;
|
||
}
|
||
if (pciWindowSize == 0) {
|
||
MemoryDisableWindow (PCI_0_IO_WINDOW << pciWindow);
|
||
return true;
|
||
}
|
||
/* The base address must be aligned to the size */
|
||
if ((pciWindowBase % pciWindowSize) != 0) {
|
||
return false;
|
||
}
|
||
if (pciWindowSize >= MINIMUM_PCI_WINDOW_SIZE) {
|
||
pciWindowBase >>= 16;
|
||
pciWindowSize >>= 16;
|
||
/* Checking that the size is a sequence of '1' followed by a
|
||
sequence of '0' starting from LSB to MSB. */
|
||
temp = pciWindowSize - 1;
|
||
for (rShift = 0; rShift < 16; rShift++) {
|
||
temp = temp >> rShift;
|
||
if ((temp & 0x1) == 0) { /* Either we got to the last '1' */
|
||
/* or the size is not valid */
|
||
if (temp > 0x0)
|
||
return false;
|
||
else
|
||
break;
|
||
}
|
||
}
|
||
GT_REG_WRITE (sizeReg, pciWindowSize - 1);
|
||
GT_REG_READ (baseAddrReg, ¤tLow);
|
||
pciWindowBase =
|
||
(pciWindowBase & 0xfffff) | (currentLow & 0xfff00000);
|
||
GT_REG_WRITE (baseAddrReg, pciWindowBase);
|
||
MemoryEnableWindow (PCI_0_IO_WINDOW << pciWindow);
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* memoryMapInternalRegistersSpace - Sets new base address for the internal
|
||
* registers memory space.
|
||
*
|
||
* DESCRIPTION:
|
||
* This function set new base address for the internal register’s memory
|
||
* space (the size is fixed and cannot be modified). The function does not
|
||
* handle overlapping with other memory spaces, it is the programer's
|
||
* responsibility to ensure that overlapping does not occur.
|
||
* When two memory spaces overlap, the MV’s behavior is not defined.
|
||
*
|
||
* INPUT:
|
||
* internalRegBase - new base address for the internal register’s memory
|
||
* space.
|
||
*
|
||
* OUTPUT:
|
||
* None.
|
||
*
|
||
* RETURN:
|
||
* true on success, false on failure
|
||
*
|
||
*******************************************************************************/
|
||
/********************************************************************
|
||
* memoryMapInternalRegistersSpace - Sets new base address for the internals
|
||
* registers.
|
||
*
|
||
* INPUTS: unsigned int internalRegBase - The new base address.
|
||
* RETURNS: true on success, false on failure
|
||
*********************************************************************/
|
||
bool memoryMapInternalRegistersSpace (unsigned int internalRegBase)
|
||
{
|
||
unsigned int currentValue;
|
||
unsigned int internalValue = internalRegBase;
|
||
|
||
internalRegBase = (internalRegBase >> 16);
|
||
GT_REG_READ (INTERNAL_SPACE_DECODE, ¤tValue);
|
||
internalRegBase = (currentValue & 0xff000000) | internalRegBase;
|
||
GT_REG_WRITE (INTERNAL_SPACE_DECODE, internalRegBase);
|
||
/* initializing also the global variable 'internalRegBaseAddr' */
|
||
/* gtInternalRegBaseAddr = internalValue; */
|
||
INTERNAL_REG_BASE_ADDR = internalValue;
|
||
return true;
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* memoryGetInternalRegistersSpace - Returns the internal registers Base
|
||
* address.
|
||
*
|
||
* DESCRIPTION:
|
||
* This function returns the base address of the internal register’s
|
||
* memory space .
|
||
*
|
||
* INPUT:
|
||
* None.
|
||
*
|
||
* OUTPUT:
|
||
* None.
|
||
*
|
||
* RETURN:
|
||
* 32 bit base address of the internal register’s memory space.
|
||
*
|
||
*******************************************************************************/
|
||
unsigned int memoryGetInternalRegistersSpace (void)
|
||
{
|
||
unsigned int currentValue = 0;
|
||
|
||
GT_REG_READ (INTERNAL_SPACE_DECODE, ¤tValue);
|
||
return ((currentValue & 0x000fffff) << 16);
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* gtMemoryGetInternalSramBaseAddr - Returns the integrated SRAM base address.
|
||
*
|
||
* DESCRIPTION:
|
||
* The Atlantis incorporate integrated 2Mbit SRAM for general use. This
|
||
* funcnion return the SRAM's base address.
|
||
* INPUT:
|
||
* None.
|
||
* OUTPUT:
|
||
* None.
|
||
* RETURN:
|
||
* 32 bit SRAM's base address.
|
||
*
|
||
*******************************************************************************/
|
||
unsigned int memoryGetInternalSramBaseAddr (void)
|
||
{
|
||
return ((GTREGREAD (INTEGRATED_SRAM_BASE_ADDR) & 0xfffff) << 16);
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* gtMemorySetInternalSramBaseAddr - Set the integrated SRAM base address.
|
||
*
|
||
* DESCRIPTION:
|
||
* The Atlantis incorporate integrated 2Mbit SRAM for general use. This
|
||
* function sets a new base address to the SRAM .
|
||
* INPUT:
|
||
* sramBaseAddress - The SRAM's base address.
|
||
* OUTPUT:
|
||
* None.
|
||
* RETURN:
|
||
* None.
|
||
*
|
||
*******************************************************************************/
|
||
void gtMemorySetInternalSramBaseAddr (unsigned int sramBaseAddress)
|
||
{
|
||
GT_REG_WRITE (INTEGRATED_SRAM_BASE_ADDR, sramBaseAddress >> 16);
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* memorySetProtectRegion - Set protection mode for one of the 8 regions.
|
||
*
|
||
* DESCRIPTION:
|
||
* The CPU interface supports configurable access protection. This includes
|
||
* up to eight address ranges defined to a different protection type :
|
||
* whether the address range is cacheable or not, whether it is writable or
|
||
* not , and whether it is accessible or not. A Low and High registers
|
||
* define each window while the minimum address range of each window is
|
||
* 1Mbyte. An address driven by the CPU, in addition to the address
|
||
* decoding and remapping process, is compared against the eight Access
|
||
* Protection Low/High registers , if an address matches one of the windows
|
||
* , the MV device checks the transaction type against the protection bits
|
||
* defined in CPU Access Protection register, to determine if the access is
|
||
* allowed. This function set a protection mode to one of the 8 possible
|
||
* regions.
|
||
* NOTE:
|
||
* The CPU address windows are restricted to a size of 2 power n and the
|
||
* start address must be aligned to the window size. For example, if using
|
||
* a 16 MB window, the start address bits [23:0] must be 0.The MV's
|
||
* internal registers space is not protected, even if the access protection
|
||
* windows contain this space.
|
||
*
|
||
* INPUT:
|
||
* region - selects which region to be configured. The values defined in
|
||
* gtMemory.h:
|
||
*
|
||
* - MEM_REGION0
|
||
* - MEM_REGION1
|
||
* - etc.
|
||
*
|
||
* memAccess - Allows or forbids access (read or write ) to the region. The
|
||
* values defined in gtMemory.h:
|
||
*
|
||
* - MEM_ACCESS_ALLOWED
|
||
* - MEM_ACCESS_FORBIDEN
|
||
*
|
||
* memWrite - CPU write protection to the region. The values defined in
|
||
* gtMemory.h:
|
||
*
|
||
* - MEM_WRITE_ALLOWED
|
||
* - MEM_WRITE_FORBIDEN
|
||
*
|
||
* cacheProtection - Defines whether caching the region is allowed or not.
|
||
* The values defined in gtMemory.h:
|
||
*
|
||
* - MEM_CACHE_ALLOWED
|
||
* - MEM_CACHE_FORBIDEN
|
||
*
|
||
* baseAddress - the region's base Address.
|
||
* regionSize - The region's size. This function will decrement the
|
||
* 'regionSize' parameter by one and then check if the size
|
||
* is valid. A valid size must be programed from LSB to MSB
|
||
* as sequence of ‘1’s followed by sequence of ‘0’s.
|
||
* To close a memory window simply set the size to 0.
|
||
*
|
||
* NOTE!!!
|
||
* The size must be in 64Kbyte granularity.
|
||
* The base address must be aligned to the size.
|
||
*
|
||
* OUTPUT:
|
||
* None.
|
||
*
|
||
* RETURN:
|
||
* False for invalid size, true otherwise.
|
||
*
|
||
*******************************************************************************/
|
||
bool memorySetProtectRegion (MEMORY_PROTECT_WINDOW window,
|
||
MEMORY_ACCESS memAccess,
|
||
MEMORY_ACCESS_WRITE memWrite,
|
||
MEMORY_CACHE_PROTECT cacheProtection,
|
||
unsigned int baseAddress, unsigned int size)
|
||
{
|
||
unsigned int dataForReg, temp, rShift;
|
||
|
||
if (size == 0) {
|
||
GT_REG_WRITE ((CPU_PROTECT_WINDOW_0_SIZE + 0x10 * window),
|
||
0x0);
|
||
return true;
|
||
}
|
||
/* The base address must be aligned to the size. */
|
||
if (baseAddress % size != 0) {
|
||
return false;
|
||
}
|
||
if (size >= MINIMUM_ACCESS_WIN_SIZE) {
|
||
baseAddress = ((baseAddress >> 16) & 0xfffff);
|
||
dataForReg = baseAddress | ((memAccess << 20) & BIT20) |
|
||
((memWrite << 21) & BIT21) | ((cacheProtection << 22)
|
||
& BIT22) | BIT31;
|
||
GT_REG_WRITE (CPU_PROTECT_WINDOW_0_BASE_ADDR + 0x10 * window,
|
||
dataForReg);
|
||
size >>= 16;
|
||
/* Checking that the size is a sequence of '1' followed by a
|
||
sequence of '0' starting from LSB to MSB. */
|
||
temp = size - 1;
|
||
for (rShift = 0; rShift < 16; rShift++) {
|
||
temp = temp >> rShift;
|
||
if ((temp & 0x1) == 0) { /* Either we got to the last '1' */
|
||
/* or the size is not valid */
|
||
if (temp > 0x0)
|
||
return false;
|
||
else
|
||
break;
|
||
}
|
||
}
|
||
GT_REG_WRITE ((CPU_PROTECT_WINDOW_0_SIZE + 0x10 * window),
|
||
size - 1);
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* gtMemoryDisableProtectRegion - Disable a protected window.
|
||
*
|
||
* DESCRIPTION:
|
||
* This function disable a protected window set by
|
||
* 'gtMemorySetProtectRegion' function.
|
||
*
|
||
* INPUT:
|
||
* window - one of the 4 windows ( defined in gtMemory.h ).
|
||
*
|
||
* OUTPUT:
|
||
* None.
|
||
*
|
||
* RETURN:
|
||
* None.
|
||
*
|
||
*******************************************************************************/
|
||
void memoryDisableProtectRegion (MEMORY_PROTECT_WINDOW window)
|
||
{
|
||
RESET_REG_BITS (((CPU_PROTECT_WINDOW_0_BASE_ADDR) + (0x10 * window)),
|
||
BIT31);
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* memorySetPciRemapValue - Set a remap value to a PCI memory space target.
|
||
*
|
||
* DESCRIPTION:
|
||
* In addition to the address decoding mechanism, the CPU has an address
|
||
* remapping mechanism to be used by every PCI decoding window. Each PCI
|
||
* window can be remaped to a desired address target according to the remap
|
||
* value within the remap register. The address remapping is useful when a
|
||
* CPU address range must be reallocated to a different location on the
|
||
* PCI bus. Also, it enables CPU access to a PCI agent located above the
|
||
* 4Gbyte space. On system boot, each of the PCI memory spaces is maped to
|
||
* a defualt value (see CPU interface section in the MV spec for the
|
||
* default values). The remap mechanism does not always produce the desired
|
||
* address on the PCI bus because of the remap mechanism way of working
|
||
* (to fully understand why, please see the 'Address Remapping' section in
|
||
* the MV's spec). Therefor, this function sets a desired remap value to
|
||
* one of the PCI memory windows and return the effective address that
|
||
* should be used when exiting the PCI memory window. You should ALWAYS use
|
||
* the returned value by this function when remapping a PCI window and
|
||
* exiting it. If for example the base address of PCI0 memory 0 is
|
||
* 0x90000000, the size is 0x03ffffff and the remap value is 0x11000000,
|
||
* the function will return the value of 0x91000000 that MUST
|
||
* be used to exit this memory window in order to achive the deisred
|
||
* remapping.
|
||
*
|
||
* INPUT:
|
||
* memoryWindow - One of the PCI memory windows as defined in Memory.h
|
||
* remapValueLow - The low remap value.
|
||
* remapValueHigh - The high remap value.
|
||
* OUTPUT:
|
||
* None.
|
||
*
|
||
* RETURN:
|
||
* The effective base address to exit the PCI, or 0xffffffff if one of the
|
||
* parameters is erroneous or the effective base address is higher the top
|
||
* decode value.
|
||
*
|
||
*******************************************************************************/
|
||
unsigned int memorySetPciRemapValue (PCI_MEM_WINDOW memoryWindow,
|
||
unsigned int remapValueHigh,
|
||
unsigned int remapValueLow)
|
||
{
|
||
unsigned int pciMemWindowBaseAddrReg = 0, baseAddrValue = 0;
|
||
unsigned int pciMemWindowSizeReg = 0, windowSizeValue = 0;
|
||
unsigned int effectiveBaseAddress, remapRegLow, remapRegHigh;
|
||
|
||
/* Initializing the base and size variables of the PCI
|
||
memory windows */
|
||
switch (memoryWindow) {
|
||
case PCI_0_IO:
|
||
pciMemWindowBaseAddrReg = PCI_0_IO_BASE_ADDR;
|
||
pciMemWindowSizeReg = PCI_0_IO_SIZE;
|
||
remapRegLow = PCI_0_IO_ADDR_REMAP;
|
||
remapRegHigh = PCI_0_IO_ADDR_REMAP;
|
||
break;
|
||
case PCI_0_MEM0:
|
||
pciMemWindowBaseAddrReg = PCI_0_MEMORY0_BASE_ADDR;
|
||
pciMemWindowSizeReg = PCI_0_MEMORY0_SIZE;
|
||
remapRegLow = PCI_0_MEMORY0_LOW_ADDR_REMAP;
|
||
remapRegHigh = PCI_0_MEMORY0_HIGH_ADDR_REMAP;
|
||
break;
|
||
case PCI_0_MEM1:
|
||
pciMemWindowBaseAddrReg = PCI_0_MEMORY1_BASE_ADDR;
|
||
pciMemWindowSizeReg = PCI_0_MEMORY1_SIZE;
|
||
remapRegLow = PCI_0_MEMORY1_LOW_ADDR_REMAP;
|
||
remapRegHigh = PCI_0_MEMORY1_HIGH_ADDR_REMAP;
|
||
break;
|
||
case PCI_0_MEM2:
|
||
pciMemWindowBaseAddrReg = PCI_0_MEMORY2_BASE_ADDR;
|
||
pciMemWindowSizeReg = PCI_0_MEMORY2_SIZE;
|
||
remapRegLow = PCI_0_MEMORY2_LOW_ADDR_REMAP;
|
||
remapRegHigh = PCI_0_MEMORY2_HIGH_ADDR_REMAP;
|
||
break;
|
||
case PCI_0_MEM3:
|
||
pciMemWindowBaseAddrReg = PCI_0_MEMORY3_BASE_ADDR;
|
||
pciMemWindowSizeReg = PCI_0_MEMORY3_SIZE;
|
||
remapRegLow = PCI_0_MEMORY3_LOW_ADDR_REMAP;
|
||
remapRegHigh = PCI_0_MEMORY3_HIGH_ADDR_REMAP;
|
||
break;
|
||
#ifdef INCLUDE_PCI_1
|
||
case PCI_1_IO:
|
||
pciMemWindowBaseAddrReg = PCI_1_IO_BASE_ADDR;
|
||
pciMemWindowSizeReg = PCI_1_IO_SIZE;
|
||
remapRegLow = PCI_1_IO_ADDR_REMAP;
|
||
remapRegHigh = PCI_1_IO_ADDR_REMAP;
|
||
break;
|
||
case PCI_1_MEM0:
|
||
pciMemWindowBaseAddrReg = PCI_1_MEMORY0_BASE_ADDR;
|
||
pciMemWindowSizeReg = PCI_1_MEMORY0_SIZE;
|
||
remapRegLow = PCI_1_MEMORY0_LOW_ADDR_REMAP;
|
||
remapRegHigh = PCI_1_MEMORY0_HIGH_ADDR_REMAP;
|
||
break;
|
||
case PCI_1_MEM1:
|
||
pciMemWindowBaseAddrReg = PCI_1_MEMORY1_BASE_ADDR;
|
||
pciMemWindowSizeReg = PCI_1_MEMORY1_SIZE;
|
||
remapRegLow = PCI_1_MEMORY1_LOW_ADDR_REMAP;
|
||
remapRegHigh = PCI_1_MEMORY1_HIGH_ADDR_REMAP;
|
||
break;
|
||
case PCI_1_MEM2:
|
||
pciMemWindowBaseAddrReg = PCI_1_MEMORY1_BASE_ADDR;
|
||
pciMemWindowSizeReg = PCI_1_MEMORY1_SIZE;
|
||
remapRegLow = PCI_1_MEMORY1_LOW_ADDR_REMAP;
|
||
remapRegHigh = PCI_1_MEMORY1_HIGH_ADDR_REMAP;
|
||
break;
|
||
case PCI_1_MEM3:
|
||
pciMemWindowBaseAddrReg = PCI_1_MEMORY3_BASE_ADDR;
|
||
pciMemWindowSizeReg = PCI_1_MEMORY3_SIZE;
|
||
remapRegLow = PCI_1_MEMORY3_LOW_ADDR_REMAP;
|
||
remapRegHigh = PCI_1_MEMORY3_HIGH_ADDR_REMAP;
|
||
break;
|
||
#endif /* INCLUDE_PCI_1 */
|
||
default:
|
||
/* Retrun an invalid effective base address */
|
||
return 0xffffffff;
|
||
}
|
||
/* Writing the remap value to the remap regisers */
|
||
GT_REG_WRITE (remapRegHigh, remapValueHigh);
|
||
GT_REG_WRITE (remapRegLow, remapValueLow >> 16);
|
||
/* Reading the values from the base address and size registers */
|
||
baseAddrValue = GTREGREAD (pciMemWindowBaseAddrReg) & 0xfffff;
|
||
windowSizeValue = GTREGREAD (pciMemWindowSizeReg) & 0xffff;
|
||
/* Start calculating the effective Base Address */
|
||
effectiveBaseAddress = baseAddrValue << 16;
|
||
/* The effective base address will be combined from the chopped (if any)
|
||
remap value (according to the size value and remap mechanism) and the
|
||
window's base address */
|
||
effectiveBaseAddress |=
|
||
(((windowSizeValue << 16) | 0xffff) & remapValueLow);
|
||
/* If the effectiveBaseAddress exceed the window boundaries return an
|
||
invalid value. */
|
||
if (effectiveBaseAddress >
|
||
((baseAddrValue << 16) + ((windowSizeValue << 16) | 0xffff)))
|
||
return 0xffffffff;
|
||
return effectiveBaseAddress;
|
||
}
|
||
|
||
/********************************************************************
|
||
* memorySetRegionSnoopMode - This function modifys one of the 4 regions which
|
||
* supports Cache Coherency.
|
||
*
|
||
*
|
||
* Inputs: SNOOP_REGION region - One of the four regions.
|
||
* SNOOP_TYPE snoopType - There is four optional Types:
|
||
* 1. No Snoop.
|
||
* 2. Snoop to WT region.
|
||
* 3. Snoop to WB region.
|
||
* 4. Snoop & Invalidate to WB region.
|
||
* unsigned int baseAddress - Base Address of this region.
|
||
* unsigned int topAddress - Top Address of this region.
|
||
* Returns: false if one of the parameters is wrong and true else
|
||
*********************************************************************/
|
||
/* evb6260 code */
|
||
#if 0
|
||
bool memorySetRegionSnoopMode(MEMORY_SNOOP_REGION region,
|
||
MEMORY_SNOOP_TYPE snoopType,
|
||
unsigned int baseAddress,
|
||
unsigned int regionLength)
|
||
{
|
||
unsigned int snoopXbaseAddress;
|
||
unsigned int snoopXtopAddress;
|
||
unsigned int data;
|
||
unsigned int snoopHigh = baseAddress + regionLength;
|
||
|
||
if( (region > MEM_SNOOP_REGION3) || (snoopType > MEM_SNOOP_WB) )
|
||
return false;
|
||
snoopXbaseAddress = SNOOP_BASE_ADDRESS_0 + 0x10 * region;
|
||
snoopXtopAddress = SNOOP_TOP_ADDRESS_0 + 0x10 * region;
|
||
if(regionLength == 0) /* closing the region */
|
||
{
|
||
GT_REG_WRITE(snoopXbaseAddress,0x0000ffff);
|
||
GT_REG_WRITE(snoopXtopAddress,0);
|
||
return true;
|
||
}
|
||
baseAddress = baseAddress & 0xffff0000;
|
||
data = (baseAddress >> 16) | snoopType << 16;
|
||
GT_REG_WRITE(snoopXbaseAddress,data);
|
||
snoopHigh = (snoopHigh & 0xfff00000) >> 20;
|
||
GT_REG_WRITE(snoopXtopAddress,snoopHigh - 1);
|
||
return true;
|
||
}
|
||
#endif
|
||
|
||
/********************************************************************
|
||
* memoryRemapAddress - This fubction used for address remapping.
|
||
*
|
||
*
|
||
* Inputs: regOffset: remap register
|
||
* remapValue :
|
||
* Returns: false if one of the parameters is erroneous,true otherwise.
|
||
*
|
||
* Not needed function To_do !!!!
|
||
*********************************************************************/
|
||
bool memoryRemapAddress (unsigned int remapReg, unsigned int remapValue)
|
||
{
|
||
unsigned int valueForReg;
|
||
|
||
valueForReg = (remapValue & 0xfff00000) >> 20;
|
||
GT_REG_WRITE (remapReg, valueForReg);
|
||
return true;
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* memoryGetDeviceParam - Extract the device parameters from the device bank
|
||
* parameters register.
|
||
*
|
||
* DESCRIPTION:
|
||
* To allow interfacing with very slow devices and fast synchronous SRAMs,
|
||
* each device can be programed to different timing parameters. Each bank
|
||
* has its own parameters register. Bank width can be programmed to 8, 16,
|
||
* or 32-bits. Bank timing parameters can be programmed to support
|
||
* different device types (e.g. Sync Burst SRAM, Flash , ROM, I/O
|
||
* Controllers). The MV allows you to set timing parameters and width for
|
||
* each device through parameters register .
|
||
* This function extracts the parameters described from the Device Bank
|
||
* parameters register and fills the given 'deviceParam' (defined in
|
||
* gtMemory.h) structure with the read data.
|
||
*
|
||
* INPUT:
|
||
* deviceParam - pointer to a structure DEVICE_PARAM (defined in
|
||
* Memory.h).For details about each structure field please
|
||
* see the device timing parameter section in the MV
|
||
* datasheet.
|
||
* deviceNum - Select on of the five device banks (defined in
|
||
* Memory.h) :
|
||
*
|
||
* - DEVICE0
|
||
* - DEVICE1
|
||
* - DEVICE2
|
||
* - etc.
|
||
*
|
||
* OUTPUT:
|
||
* None.
|
||
*
|
||
* RETURN:
|
||
* false if one of the parameters is erroneous,true otherwise.
|
||
*
|
||
*******************************************************************************/
|
||
/********************************************************************
|
||
* memoryGetDeviceParam - This function used for getting device parameters from
|
||
* DEVICE BANK PARAMETERS REGISTER
|
||
*
|
||
*
|
||
* Inputs: - deviceParam: STRUCT with paramiters for DEVICE BANK
|
||
* PARAMETERS REGISTER
|
||
* - deviceNum : number of device
|
||
* Returns: false if one of the parameters is erroneous,true otherwise.
|
||
*********************************************************************/
|
||
|
||
bool memoryGetDeviceParam (DEVICE_PARAM * deviceParam, DEVICE deviceNum)
|
||
{
|
||
unsigned int valueOfReg;
|
||
unsigned int calcData;
|
||
|
||
if (deviceNum > 4)
|
||
return false;
|
||
GT_REG_READ (DEVICE_BANK0PARAMETERS + 4 * deviceNum, &valueOfReg);
|
||
calcData = (0x7 & valueOfReg) + ((BIT22 & valueOfReg) >> 19);
|
||
deviceParam->turnOff = calcData; /* Turn Off */
|
||
|
||
calcData = ((0x78 & valueOfReg) >> 3) + ((BIT23 & valueOfReg) >> 19);
|
||
deviceParam->acc2First = calcData; /* Access To First */
|
||
|
||
calcData = ((0x780 & valueOfReg) >> 7) + ((BIT24 & valueOfReg) >> 20);
|
||
deviceParam->acc2Next = calcData; /* Access To Next */
|
||
|
||
calcData =
|
||
((0x3800 & valueOfReg) >> 11) + ((BIT25 & valueOfReg) >> 22);
|
||
deviceParam->ale2Wr = calcData; /* Ale To Write */
|
||
|
||
calcData = ((0x1c000 & valueOfReg) >> 14) +
|
||
((BIT26 & valueOfReg) >> 23);
|
||
deviceParam->wrLow = calcData; /* Write Active */
|
||
|
||
calcData = ((0xe0000 & valueOfReg) >> 17) +
|
||
((BIT27 & valueOfReg) >> 24);
|
||
deviceParam->wrHigh = calcData; /* Write High */
|
||
|
||
calcData = ((0x300000 & valueOfReg) >> 20);
|
||
deviceParam->deviceWidth = (BIT0 << calcData); /* In bytes */
|
||
calcData = ((0x30000000 & valueOfReg) >> 28);
|
||
deviceParam->badrSkew = calcData; /* Cycles gap between BAdr
|
||
toggle to read data sample. */
|
||
calcData = ((0x40000000 & valueOfReg) >> 30);
|
||
deviceParam->DPEn = calcData; /* Data Parity enable */
|
||
return true;
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* memorySetDeviceParam - Set new parameters for a device.
|
||
*
|
||
*
|
||
* DESCRIPTION:
|
||
* To allow interfacing with very slow devices and fast synchronous SRAMs,
|
||
* each device can be programed to different timing parameters. Each bank
|
||
* has its own parameters register. Bank width can be programmed to 8, 16,
|
||
* or 32-bits. Bank timing parameters can be programmed to support
|
||
* different device types (e.g. Sync Burst SRAM, Flash , ROM, I/O
|
||
* Controllers). The MV allows you to set timing parameters and width for
|
||
* each device through parameters register. This function set new
|
||
* parameters to a device Bank from the delivered structure 'deviceParam'
|
||
* (defined in gtMemory.h). The structure must be initialized with data
|
||
* prior to the use of these function.
|
||
*
|
||
* INPUT:
|
||
* deviceParam - pointer to a structure DEVICE_PARAM (defined in
|
||
* Memory.h).For details about each structure field please
|
||
* see the device timing parameter section in the MV
|
||
* datasheet.
|
||
* deviceNum - Select on of the five device banks (defined in
|
||
* Memory.h) :
|
||
*
|
||
* - DEVICE0
|
||
* - DEVICE1
|
||
* - DEVICE2
|
||
* - etc.
|
||
*
|
||
* OUTPUT:
|
||
* None.
|
||
*
|
||
* RETURN:
|
||
* false if one of the parameters is erroneous,true otherwise.
|
||
*
|
||
*******************************************************************************/
|
||
/********************************************************************
|
||
* memorySetDeviceParam - This function used for setting device parameters to
|
||
* DEVICE BANK PARAMETERS REGISTER
|
||
*
|
||
*
|
||
* Inputs: - deviceParam: STRUCT for store paramiters from DEVICE BANK
|
||
* PARAMETERS REGISTER
|
||
* - deviceNum : number of device
|
||
* Returns: false if one of the parameters is erroneous,true otherwise.
|
||
*********************************************************************/
|
||
bool memorySetDeviceParam (DEVICE_PARAM * deviceParam, DEVICE deviceNum)
|
||
{
|
||
unsigned int valueForReg;
|
||
|
||
if ((deviceParam->turnOff > 0x7) || (deviceParam->acc2First > 0xf) ||
|
||
(deviceParam->acc2Next > 0xf) || (deviceParam->ale2Wr > 0x7) ||
|
||
(deviceParam->wrLow > 0x7) || (deviceParam->wrHigh > 0x7) ||
|
||
(deviceParam->badrSkew > 0x2) || (deviceParam->DPEn > 0x1)) {
|
||
return false;
|
||
}
|
||
valueForReg = (((deviceParam->turnOff) & 0x7) |
|
||
(((deviceParam->turnOff) & 0x8) << 19) |
|
||
(((deviceParam->acc2First) & 0xf) << 3) |
|
||
(((deviceParam->acc2First) & 0x10) << 19) |
|
||
(((deviceParam->acc2Next) & 0xf) << 7) |
|
||
(((deviceParam->acc2Next) & 0x10) << 20) |
|
||
(((deviceParam->ale2Wr) & 0x7) << 11) |
|
||
(((deviceParam->ale2Wr) & 0xf) << 22) |
|
||
(((deviceParam->wrLow) & 0x7) << 14) |
|
||
(((deviceParam->wrLow) & 0xf) << 23) |
|
||
(((deviceParam->wrHigh) & 0x7) << 17) |
|
||
(((deviceParam->wrHigh) & 0xf) << 24) |
|
||
(((deviceParam->badrSkew) & 0x3) << 28) |
|
||
(((deviceParam->DPEn) & 0x1) << 30));
|
||
|
||
/* insert the device width: */
|
||
switch (deviceParam->deviceWidth) {
|
||
case 1:
|
||
valueForReg = valueForReg | _8BIT;
|
||
break;
|
||
case 2:
|
||
valueForReg = valueForReg | _16BIT;
|
||
break;
|
||
case 4:
|
||
valueForReg = valueForReg | _32BIT;
|
||
break;
|
||
default:
|
||
valueForReg = valueForReg | _8BIT;
|
||
break;
|
||
}
|
||
GT_REG_WRITE (DEVICE_BANK0PARAMETERS + 4 * deviceNum, valueForReg);
|
||
return true;
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* MemoryDisableWindow - Disable a memory space by the disable bit.
|
||
* DESCRIPTION:
|
||
* This function disables one of the 21 availiable windows dedicated for
|
||
* the CPU decoding mechanism. Its possible to combine several windows with
|
||
* the OR command.
|
||
* INPUT:
|
||
* window - One or more of the memory windows (defined in gtMemory.h).
|
||
* OUTPUT:
|
||
* None.
|
||
* RETURN:
|
||
* None.
|
||
*******************************************************************************/
|
||
void MemoryDisableWindow (MEMORY_WINDOW window)
|
||
{
|
||
SET_REG_BITS (BASE_ADDR_ENABLE, window);
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* MemoryEnableWindow - Enable a memory space that was disabled by
|
||
* 'MemoryDisableWindow'.
|
||
* DESCRIPTION:
|
||
* This function enables one of the 21 availiable windows dedicated for the
|
||
* CPU decoding mechanism. Its possible to combine several windows with the
|
||
* OR command.
|
||
* INPUT:
|
||
* window - One or more of the memory windows (defined in gtMemory.h).
|
||
* OUTPUT:
|
||
* None.
|
||
* RETURN:
|
||
* None.
|
||
*******************************************************************************/
|
||
void MemoryEnableWindow (MEMORY_WINDOW window)
|
||
{
|
||
RESET_REG_BITS (BASE_ADDR_ENABLE, window);
|
||
}
|
||
|
||
/*******************************************************************************
|
||
* MemoryGetMemWindowStatus - This function check whether the memory window is
|
||
* disabled or not.
|
||
* DESCRIPTION:
|
||
* This function checks if the given memory window is closed .
|
||
* INPUT:
|
||
* window - One or more of the memory windows (defined in gtMemory.h).
|
||
* OUTPUT:
|
||
* None.
|
||
* RETURN:
|
||
* True for a closed window, false otherwise .
|
||
*******************************************************************************/
|
||
MEMORY_WINDOW_STATUS MemoryGetMemWindowStatus (MEMORY_WINDOW window)
|
||
{
|
||
if (GTREGREAD (BASE_ADDR_ENABLE) & window)
|
||
return MEM_WINDOW_DISABLED;
|
||
return MEM_WINDOW_ENABLED;
|
||
}
|