21.13.1.77 write_lsram

Description

This tcl command writes a word into the specified large TPSRAM location.

TPSRAM block has aspect ratio of 512x40 (ECC disabled) and 512x33 (ECC enabled). SmartDebug enhanced the physical block view to read and write as 40-bit and 33-bit data. The write value is more than the size of integer and hence provided a new parameter -tpsramValue to accommodate the changes

Write onto TPSRAM physical block → 40-bit wide or 33-bit wide for PF and 18-bit wide or 36-bit wide for RTG4

Physical block
write_lsram [-deviceName "device name"] \
            -name {physical block name} \
            -offset {offset value} \
            -value {integer value} \
            [-tpsramValue "TPSRAM physical block word value"]
Logical block
write_lsram [-deviceName "device name"] \
            -logicalBlockName {block name} \
            -port {port name} \
            -offset {offset value} \
            -logicalValue {hexadecimal value}

Arguments


Parameter	Type	Description
deviceName	string	Optional user-defined device name. The device name is not required if there is only one device in the current configuration, or a device has already been selected using the set_debug_device command.
name	string	Specifies the name for the target block.
logicalBlockName	string	Specifies the name of the user defined memory block.
port	string	Specifies the port of the memory block selected. Can be either Port A or Port B.
offset	integer	Offset (address) of the target word within the memory block.
logicalValue	hexadecimal	Specifies the hexadecimal value to be written to the memory block. Size of the value is equal to the width of the output port selected.
value	integer	Word to be written to the target location. Depending on the configuration of memory blocks, the width can be 1, 2, 5, 10, or 20 bits. This is an integer, which minimum value is 0 and may go up to depending on the size of each location}
tpsramValue	integer	integer value, minimum value is 0 to (2^N - 1) where N is number of bits configured. PolarFire , PolarFire Soc and RTG4 only.


Return Type	Description
None	None

Error Codes


Error Code	Description
None	Parameter 'param_name' is not defined. Valid command formatting is'write_lsram [-deviceName "device name"] [-name "LSRAM block name"] [-logicalBlockName "USRAM user defined block name"] [-port "LSRAM port name"] [-offset "integer value"] [-logicalValue "LSRAM block word value"] [-value "integer value"] [-tpsramValue "TPSRAM physical block word value"]'.
None	Parameter 'name' has illegal value
None	Missing argument. Must specify '-name' or '-logicalBlockName'.
None	Parameter 'logicalValue' has illegal value.
None	Error write LSRAM block PF_DPSRAM_C0_0/PF_DPSRAM_C0_0: Target memory block should first be read before write..
None	Parameter 'logicalBlockName' has illegal value.
None	LSRAM block cannot be read. Use phyical block option to read.
None	RAM port name must be specified.
None	Parameter 'port' has illegal value.
None	Port port_name is an invalid Port name.
None	Parameter 'file' has illegal value Parameter 'tpsramValue' has illegal value.
None	Parameter 'value' has illegal value.
None	value: Invalid argument value: 'value' (expecting integer value).
None	Parameter 'offset' has illegal value.
None	offset: Invalid argument value: 'value' (expecting integer value).
None	Active probe value must be specified.

Supported Families


PolarFire
PolarFire SoC
SmartFusion 2
IGLOO 2
RTG4

Example

This example writes a value of 69905 to the physical block of device PolarFire in the "PF_DPSRAM_C0_0/INST_RAM1K20_IP" with an offset of 3:

write_lsram -name {PF_DPSRAM_C0_0/INST_RAM1K20_IP} \
            -offset 3 -value 69905

write_lsram -logicalBlockName {PF_DPSRAM_C0_0/PF_DPSRAM_C0_0} \
            -port {Port B} -offset {1} -logicalValue {0xA} \
            -tpsramValue 300

v2024.2