SDRAM Configuration

Here is the DTS format for the SDRAM configuration:

 /{
   sdram {
     mem_cfg_<N>: mem-cfg@<N> {
       <parameter> = <value>;
     };
   };
};

&mem_cfg_<N> {
  #include "\<mem_override_dts\>"
};

where

<N> is number starting from 0 representing different memory configurations

<parameter> is the SDRAM parameter. Usually, this corresponds to the MC/EMC register.

<value> is the 32-bit value of the corresponding register.

<mem_override_dts> is override file for SDRAM parameters which will be applied to all the configurations.

The format of the override dts will be:

<parameter> = <value>; // example McVideoProtectBom = <0x00000000>;

The Memory/MSS HW team will use a tool provided by SW to convert the legacy configuration format to the new DTS format.

Carveouts

The following types of hardware carveouts:

GSC carveouts
Non-GSC carveouts

The following table lists the important carveout fields in BCT cfg.

Field	Description
McGeneralizedCarveout<N>Bom GeneralizedCarveout<N>BomHi (where N is the GSC#)	Preferred base address of the GSC carveout. The recommended value is 0, and this field allows MB1 to allocate on its own.
McGeneralizedCarveout<N>Size128kb, where N is the GSC#.	Here are the values: 31:27: Size of the generalized security carveout region with 4kb granularity. 11:0: Size of the generalized security carveout region with 128kb granularity size = (MC_SECURITY_CARVEOUT1_SIZE_RAN←GE_128KB << 17) \| (MC_SECURITY_CARVEOUT1_SIZE_RANGE_4KB << 12).
McGeneralizedCarveout<N>Access[0-5], where N is the GSC#.	Client Access Register for Generalized Carveout. For the bit description details refer to TRM.

GSC Carveouts

The following list gives a mapping between Carveout names and its corresponding GSC numbers:

Carveout #	Carveout Name
1	NVDEC
2	WPR1
3	WPR2
4	TSECA
5	TSECB
6	BPMP
7	APE
8	SPE
9	SCE
10	APR
11	TZRAM
12	IPC_SE_TSEC
13	BPMP_RCE
14	BPMP_DMCE
15	SE_SC7
16	BPMP_SPE
17	RCE
18	CPUTZ_BPMP
19	VM_ENCRYPT1
20	CPU_NS_BPMP
21	OEM_SC7
22	IPC_SE_SPE_SCE_BPMP
23	SC7_RF
24	CAMERA_TASK
25	SCE_BPMP
26	CV
27	VM_ENCRYPT2
28	HYPERVISOR
29	SMMU
30	PFSD
31	Unused

Non-GSC Carveouts

Carveout #	Carveout Name
32	MTS