Samsung V1.3.0, Porting Manual

6         

Linux 

RFS 

v1.3.0 

Porting 

Guide 

Most of the sources are platform-independent codes except PAM. Please refer the “XSR Porting 

Guide” for more detailed information. Before going into detail about RFS customization 
according to target requirement, next section will explain about objects that Linux RFS will 

create during make (or build) steps. 
 

2.2.3

RFS Memory Usage 

Table 2 lists the RFS static memory usage.  
 

Table 2 RFS Static Memory Usage (in bytes) 

Module TEXT  DATA  BSS  Total 

RFS 45,112 

680 

4 

45,796 

XSR 80,808 

2,692 

4,288 

87,788 

Sum 125,920 

3,372 

4,292 

133,584 

2.3

Hardware Environment 

In this porting guide, OMAP2420 is used as target board to give porting example of RFS. 3 shows 
hardware information about OMAP2420.

Table 3 shows hardware information about OMA2420.

Table 3 Hardware information of OMAP2420 

CPU 

ARM1136JF-S core and TMS320C55x DSP core 

Memory 

SRAM: 640K bytes of shared inetrnal RAM 

External Memory Interface 

1. General Purpose Memory Controller (GPMC) 

     Up to 100MHz, NOR flash, NAND flash, SRAM, and 
PSRAM asynchronous and synchronous protocols 

     16-bit data, up to eight chip-selects, 128M-byte 
address bus, 1G-byte total address space 

2. SDRAM controller (SDRC) 
    SDRAM, DDR mobile SDRAM, mobile DDR 

    16- 

or 

32-bit 

data, 

two 

chip-selects, 

configurations up to 2G bits on each chip-select 16bit  

MPU 

Peripheral 

v6 instruction set architecture (ISA), 32K-byte 

instruction and 3K-byte data 
64-entry instruction and 64-entry data write buffer 

Vector floating-point processor 
Jazelle Java accelerator 

OneNAND device 

Select OneNAND device according to your 

requirement (1.8v/3.3v)