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Diffstat (limited to 'board/Marvell/common/memory.c')
| -rw-r--r-- | board/Marvell/common/memory.c | 1390 |
1 files changed, 1390 insertions, 0 deletions
diff --git a/board/Marvell/common/memory.c b/board/Marvell/common/memory.c new file mode 100644 index 0000000..45353af --- /dev/null +++ b/board/Marvell/common/memory.c @@ -0,0 +1,1390 @@ +/* + * Copyright - Galileo technology. + * + * See file CREDITS for list of people who contributed to this + * 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; either version 2 of + * the License, or (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * + * written or collected and sometimes rewritten by + * Ingo Assmus <ingo.assmus@keymile.com> + * + */ + + +#include <common.h> +#include "../include/core.h" +#include "../include/memory.h" + +/******************************************************************************* +* memoryGetBankBaseAddress - Returns the base address of a memory bank. +* DESCRIPTION: +* This function returns the base address of one of the SDRAM’s memory +* banks. There are 4 memory banks and each one represents one DIMM side. +* INPUT: +* MEMORY_BANK bank - Selects one of the four banks as defined in Memory.h. +* OUTPUT: +* None. +* RETURN: +* 32 bit Memory bank base address. +*******************************************************************************/ +static unsigned long memoryGetBankRegOffset (MEMORY_BANK bank) +{ + switch (bank) { + case BANK0: + return SCS_0_LOW_DECODE_ADDRESS; + case BANK1: + return SCS_1_LOW_DECODE_ADDRESS; + case BANK2: + return SCS_2_LOW_DECODE_ADDRESS; + case BANK3: + return SCS_3_LOW_DECODE_ADDRESS; + + } + return SCS_0_LOW_DECODE_ADDRESS; /* default value */ +} + +unsigned int memoryGetBankBaseAddress (MEMORY_BANK bank) +{ + unsigned int base; + unsigned int regOffset = memoryGetBankRegOffset (bank); + + GT_REG_READ (regOffset, &base); + base = base << 16; /* MV6436x */ + return base; +} + +/******************************************************************************* +* memoryGetDeviceBaseAddress - Returns the base address of a device. +* DESCRIPTION: +* This function returns the base address of a device on the system. There +* are 5 possible devices (0 - 4 and one boot device) as defined in +* gtMemory.h. Each of the device parameters is maped to one of the CS +* (Devices chip selects) base address register. +* INPUT: +* device - Selects one of the five devices as defined in Memory.h. +* OUTPUT: +* None. +* RETURN: +* 32 bit Device base address. +* +*******************************************************************************/ +static unsigned int memoryGetDeviceRegOffset (DEVICE device) +{ + switch (device) { + case DEVICE0: + return CS_0_LOW_DECODE_ADDRESS; + case DEVICE1: + return CS_1_LOW_DECODE_ADDRESS; + case DEVICE2: + return CS_2_LOW_DECODE_ADDRESS; + case DEVICE3: + return CS_3_LOW_DECODE_ADDRESS; + case BOOT_DEVICE: + return BOOTCS_LOW_DECODE_ADDRESS; + } + return CS_0_LOW_DECODE_ADDRESS; /* default value */ +} + +unsigned int memoryGetDeviceBaseAddress (DEVICE device) +{ + unsigned int regBase; + unsigned int regOffset = memoryGetDeviceRegOffset (device); + + GT_REG_READ (regOffset, ®Base); + + regBase = regBase << 16; /* MV6436x */ + return regBase; +} + +/******************************************************************************* +* MemoryGetPciBaseAddr - Returns the base address of a PCI window. +* DESCRIPTION: +* This function returns the base address of a PCI window. There are 5 +* possible PCI windows (memory 0 - 3 and one for I/O) for each PCI +* interface as defined in gtMemory.h, used by the CPU's address decoding +* mechanism. +* New in MV6436x +* INPUT: +* pciWindow - Selects one of the PCI windows as defined in Memory.h. +* OUTPUT: +* None. +* RETURN: +* 32 bit PCI window base address. +*******************************************************************************/ +unsigned int MemoryGetPciBaseAddr (PCI_MEM_WINDOW pciWindow) +{ + unsigned int baseAddrReg, base; + + switch (pciWindow) { + case PCI_0_IO: + baseAddrReg = PCI_0I_O_LOW_DECODE_ADDRESS; /*PCI_0_IO_BASE_ADDR; */ + break; + case PCI_0_MEM0: + baseAddrReg = PCI_0MEMORY0_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY0_BASE_ADDR; */ + break; + case PCI_0_MEM1: + baseAddrReg = PCI_0MEMORY1_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY1_BASE_ADDR; */ + break; + case PCI_0_MEM2: + baseAddrReg = PCI_0MEMORY2_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY2_BASE_ADDR; */ + break; + case PCI_0_MEM3: + baseAddrReg = PCI_0MEMORY3_LOW_DECODE_ADDRESS; /*PCI_0_MEMORY3_BASE_ADDR; */ + break; +#ifdef INCLUDE_PCI_1 + case PCI_1_IO: + baseAddrReg = PCI_1I_O_LOW_DECODE_ADDRESS; /*PCI_1_IO_BASE_ADDR; */ + break; + case PCI_1_MEM0: + baseAddrReg = PCI_1MEMORY0_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY0_BASE_ADDR; */ + break; + case PCI_1_MEM1: + baseAddrReg = PCI_1MEMORY1_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY1_BASE_ADDR; */ + break; + case PCI_1_MEM2: + baseAddrReg = PCI_1MEMORY2_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY2_BASE_ADDR; */ + break; + case PCI_1_MEM3: + baseAddrReg = PCI_1MEMORY3_LOW_DECODE_ADDRESS; /*PCI_1_MEMORY3_BASE_ADDR; */ + break; +#endif /* INCLUDE_PCI_1 */ + default: + return 0xffffffff; + } + GT_REG_READ (baseAddrReg, &base); + return (base << 16); +} + +/******************************************************************************* +* memoryGetBankSize - Returns the size of a memory bank. +* DESCRIPTION: +* This function returns the size of memory bank as described in +* 'gtMemoryGetBankBaseAddress' function. +* INPUT: +* bank - Selects one of the four banks as defined in Memory.h. +* OUTPUT: +* None. +* RETURN: +* 32 bit size memory bank size or 0 for a closed or non populated bank. +* +*******************************************************************************/ +unsigned int memoryGetBankSize (MEMORY_BANK bank) +{ + unsigned int sizeReg, size; + MEMORY_WINDOW window; + + switch (bank) { + case BANK0: + sizeReg = SCS_0_HIGH_DECODE_ADDRESS; /* CS_0_SIZE; */ + window = CS_0_WINDOW; + break; + case BANK1: + sizeReg = SCS_1_HIGH_DECODE_ADDRESS; /* CS_1_SIZE; */ + window = CS_1_WINDOW; + break; + case BANK2: + sizeReg = SCS_2_HIGH_DECODE_ADDRESS; /* CS_2_SIZE; */ + window = CS_2_WINDOW; + break; + case BANK3: + sizeReg = SCS_3_HIGH_DECODE_ADDRESS; /* CS_3_SIZE; */ + window = CS_3_WINDOW; + break; + default: + return 0; + break; + } + /* If the window is closed, a size of 0 is returned */ + if (MemoryGetMemWindowStatus (window) != MEM_WINDOW_ENABLED) + return 0; + GT_REG_READ (sizeReg, &size); + size = ((size << 16) | 0xffff) + 1; + return size; +} + +/******************************************************************************* +* memoryGetDeviceSize - Returns the size of a device memory space. +* DESCRIPTION: +* This function returns the memory space size of a given device. +* INPUT: +* device - Selects one of the five devices as defined in Memory.h. +* OUTPUT: +* None. +* RETURN: +* 32 bit size of a device memory space. +*******************************************************************************/ +unsigned int memoryGetDeviceSize (DEVICE device) +{ + unsigned int sizeReg, size; + MEMORY_WINDOW window; + + switch (device) { + case DEVICE0: + sizeReg = CS_0_HIGH_DECODE_ADDRESS; /*DEV_CS0_SIZE; */ + window = DEVCS_0_WINDOW; + break; + case DEVICE1: + sizeReg = CS_1_HIGH_DECODE_ADDRESS; /*DEV_CS1_SIZE; */ + window = DEVCS_1_WINDOW; + break; + case DEVICE2: + sizeReg = CS_2_HIGH_DECODE_ADDRESS; /*DEV_CS2_SIZE; */ + window = DEVCS_2_WINDOW; + break; + case DEVICE3: + sizeReg = CS_3_HIGH_DECODE_ADDRESS; /*DEV_CS3_SIZE; */ + window = DEVCS_3_WINDOW; + break; + case BOOT_DEVICE: + sizeReg = BOOTCS_HIGH_DECODE_ADDRESS; /*BOOTCS_SIZE; */ + window = BOOT_CS_WINDOW; + break; + default: + return 0; + break; + } + /* If the window is closed, a size of 0 is returned */ + if (MemoryGetMemWindowStatus (window) != MEM_WINDOW_ENABLED) + return 0; + GT_REG_READ (sizeReg, &size); + size = ((size << 16) | 0xffff) + 1; + return size; +} + +/******************************************************************************* +* MemoryGetPciWindowSize - Returns the size of a PCI memory window. +* DESCRIPTION: +* This function returns the size of a PCI window. +* INPUT: +* pciWindow - Selects one of the PCI memory windows as defined in +* Memory.h. +* OUTPUT: +* None. +* RETURN: +* 32 bit size of a PCI memory window. +*******************************************************************************/ +unsigned int MemoryGetPciWindowSize (PCI_MEM_WINDOW pciWindow) +{ + unsigned int sizeReg, size; + + switch (pciWindow) { + case PCI_0_IO: + sizeReg = PCI_0I_O_HIGH_DECODE_ADDRESS; /*PCI_0_IO_SIZE; */ + break; + case PCI_0_MEM0: + sizeReg = PCI_0MEMORY0_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY0_SIZE; */ + break; + case PCI_0_MEM1: + sizeReg = PCI_0MEMORY1_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY1_SIZE; */ + break; + case PCI_0_MEM2: + sizeReg = PCI_0MEMORY2_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY2_SIZE; */ + break; + case PCI_0_MEM3: + sizeReg = PCI_0MEMORY3_HIGH_DECODE_ADDRESS; /*PCI_0_MEMORY3_SIZE; */ + break; +#ifdef INCLUDE_PCI_1 + case PCI_1_IO: + sizeReg = PCI_1I_O_HIGH_DECODE_ADDRESS; /*PCI_1_IO_SIZE; */ + break; + case PCI_1_MEM0: + sizeReg = PCI_1MEMORY0_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY0_SIZE; */ + break; + case PCI_1_MEM1: + sizeReg = PCI_1MEMORY1_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY1_SIZE; */ + break; + case PCI_1_MEM2: + sizeReg = PCI_1MEMORY2_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY2_SIZE; */ + break; + case PCI_1_MEM3: + sizeReg = PCI_1MEMORY3_HIGH_DECODE_ADDRESS; /*PCI_1_MEMORY3_SIZE; */ + break; +#endif /* INCLUDE_PCI_1 */ + default: + return 0x0; + } + /* If the memory window is disabled, retrun size = 0 */ + if (MemoryGetMemWindowStatus (PCI_0_IO_WINDOW << pciWindow) + == MEM_WINDOW_DISABLED) + return 0; + GT_REG_READ (sizeReg, &size); + size = ((size << 16) | 0xffff) + 1; + return size; +} + +/******************************************************************************* +* memoryGetDeviceWidth - Returns the width of a given device. +* DESCRIPTION: +* The MV's device interface supports up to 32 Bit wide devices. A device +* can have a 1, 2, 4 or 8 Bytes data width. This function returns the +* width of a device as defined by the user or the operating system. +* INPUT: +* device - Selects one of the five devices as defined in Memory.h. +* OUTPUT: +* None. +* RETURN: +* Device width in Bytes (1,2,4 or 8), 0 if error had occurred. +*******************************************************************************/ +unsigned int memoryGetDeviceWidth (DEVICE device) +{ + unsigned int width; + unsigned int regValue; + + GT_REG_READ (DEVICE_BANK0PARAMETERS + device * 4, ®Value); + width = (regValue & (BIT20 | BIT21)) >> 20; + return (BIT0 << width); +} + +/******************************************************************************* +* memoryMapBank - Set new base address and size for one of the memory +* banks. +* +* 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 memory banks +* (CS0 - 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 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 +* 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 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: + 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; +} |