4.5.54
BOOT_GPR1 Register
The BOOT_GPR1 Register characteristics are:
Purpose
Bootup general-purpose register. This register enables an external controller to pass bootup
configuration information into the N1 SoC before the release of the powerup reset. The register
does not export any control from the SCC.
Usage constraints
This register is read-only from the APB interface and read/write from the serial interface.
Configurations
Available in all N1 board configurations.
Memory offset and full register reset value
See
4.5.1 Serial Configuration Control registers summary
The following table shows the BOOT_GPR1 Register bit assignments.
Table 4-85 BOOT_GPR1 Register bit assignments
Bits
Name
Type
Function
[31:0]
REG
RO from APB interface.
RW from serial interface.
Bootup general-purpose register 1.
Reset value
0x00000000
.
4.5.55
BOOT_GPR2 Register
The BOOT_GPR2 Register characteristics are:
Purpose
Bootup general-purpose register. This register enables an external controller to pass bootup
configuration information into the N1 SoC before the release of the powerup reset. The register
does not export any control from the SCC.
Usage constraints
This register is read-only from the APB interface and read/write from the serial interface.
Configurations
Available in all N1 board configurations.
Memory offset and full register reset value
See
4.5.1 Serial Configuration Control registers summary
The following table shows the BOOT_GPR2 Register bit assignments.
Table 4-86 BOOT_GPR2 Register bit assignments
Bits
Name
Type
Function
[31:0]
REG
RO from APB interface.
RW from serial interface.
Bootup general-purpose register 2.
Reset value
0x00000000
.
4.5.56
BOOT_GPR3 Register
The BOOT_GPR3 Register characteristics are:
4 Programmers model
4.5 Serial Configuration Control registers
101489_0000_02_en
Copyright © 2019, 2020 Arm Limited or its affiliates. All rights
reserved.
4-167
Non-Confidential - Beta