MB2 BCT Misc Configuration¶
This section provides additional information about the MB2 BCT Misc configuration file.
MB2 Feature Fields¶
Here is a list of the Boolean flags that enable or disable functionality in MB2:
Field |
Description |
---|---|
|
If this property is present, CPU L2 ECC is disabled. Otherwise, it is enabled. |
|
If this property is present, the combined uart is enabled. Otherwise, it is disabled. |
|
UART controller that is used for the combined UART by the SPE. |
MB2 Firmware Data¶
The MB2 firmware configuration is applied in the following way:
/ {
mb2-misc {
<firmware-type> {
<parameter> = <value>;
};
};
};
Where firmware-type
is one of the following types:
cpubl
ape-fw
bpmp-fw
rce-fw
sce-fw
camera-task-fw
apr-fw
<parameter>
is one of the parameters from the following table:
Parameters |
Description |
---|---|
|
If this parameter is present, the loading of firmware from MB2 is enabled. Otherwise, the firmware loading is disabled. |
|
Virtual address for the firmware carveout in the BPMP-R5 address space. |
|
Offset in firmware carveout where firmware binary is loaded. |
|
Offset of the firmware entry point in the firmware carveout. |
Here is an example of the MB2 Misc DTS configuration file:
/dts-v1/;
/ {
mb2-misc {
disable-cpu-l2ecc;
enable-combined-uart;
spe-uart-instance = <0x2>;
firmware {
sce {
ast-va = <0x70000000>;
};
ape {
enable;
ast-va = <0x80000000>;
};
rce {
enable;
ast-va = <0x70000000>;
};
cpubl {
load-offset = <0x600000>;
};
apr {
ast-va = <0xC0000000>;
};
camera-task {
ast-va = <0x78000000>;
};
};
};
};
Here is the previous CFG file format:
gpio-intmap.port.B.pin.1 = 0; // GPIO B1 to INT0
gpio-intmap.port.AA.pin.0 = 0; // GPIO AA0 to INT0
gpio-intmap.port.AA.pin.1 = 0; // GPIO AA1 to INT0
gpio-intmap.port.AA.pin.2 = 0; // GPIO AA2 to INT0