Hi,friends,
I plug in 1GB DDR-1 on my MPC8360 board, the u-boot-1.2.0 found the DDR storage
is 1GB, but the linux just found 773504k. please see follow information.
I think I need to config the kernel to support the high memory. but if I config
the kernel to select the "high memory support" under the "platform options" on
"linux kernel configuration" during compile, the kernel is not to boot. if I
cancel this options, the kernel is ok to run.
why? how to deal with this problem? there are two DIMM-184 slots on my MPC8360
board, I want to support total 2GB DDR-1 storage. now I want to try 1GB on one of
DIMM-184 slots firstly.
please see follow information. Thanks.
~ # dmesg
Linux version 2.6.11 (olivia at bamboo) (gcc version 3.4.3) #1 Thu Jul 12 14:29:297
On node 0 totalpages: 196608
DMA zone: 196608 pages, LIFO batch:16
Normal zone: 0 pages, LIFO batch:1
HighMem zone: 0 pages, LIFO batch:1
Built 1 zonelists
Kernel command line: console=ttyS0,115200 root=/dev/ram0
IPIC (128 IRQ sources, 8 External IRQs) at fe000700
QE IC (64 IRQ sources) at fe100080
PID hash table entries: 4096 (order: 12, 65536 bytes)
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 773504k available (1724k kernel code, 432k data, 100k init, 0k highmem)
Calibrating delay loop... 351.23 BogoMIPS (lpj=175616)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
checking if image is initramfs...it isn't (no cpio magic); looks like an initrd
Freeing initrd memory: 3120k freed
NET: Registered protocol family 16
Registering ipic with sysfs...
SCSI subsystem initialized
JFFS2 version 2.2. (C) 2001-2003 Red Hat, Inc.
Generic RTC Driver v1.07
Serial: 8250/16550 driver $Revision: 1.90 $ 2 ports, IRQ sharing disabled
ttyS0 at MMIO 0xe0004500 (irq = 9) is a 16550A
ttyS1 at MMIO 0xe0004600 (irq = 10) is a 16550A
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize
loop: loaded (max 8 devices)
MPC8360E PB flash device: 2000000 at fe000000 Partition number 6
MPC8360E PB Flash Map Info: Found 1 x16 devices at 0x0 in 16-bit bank
MPC8360E PB Flash Map Info: Found an alias at 0x1000000 for the chip at 0x0
Support for command set 0001 not present
gen_probe: No supported Vendor Command Set found
i2c /dev entries driver
eth0: Running with NAPI disabled
eth1: Running with NAPI disabled
NET: Registered protocol family 2
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 6, 262144 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
NET: Registered protocol family 1
NET: Registered protocol family 17
RAMDISK: Compressed image found at block 0
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 100k init
eth0: PHY is Marvell 88E11x1 (1410cc1)
eth0: Full Duplex
eth0: Speed 1000BT
eth0: Link is up
U-Boot 1.2.0 (Nov 21 2007 - 16:05:15) MPC83XX
CPU: e300c1, MPC8360E, Rev: 20 at 528 MHz, CSB: 264 MHz
Board: Freescale MPC8360EMDS
I2C: ready
DRAM:
DIMM type:
SPD size: 128
EEPROM size: 256
Memory type: 7
Row addr: 13
Column addr: 11
# of rows: 2
Row density: 128
# of banks: 4
Data width: 64
Chip width: 8
Refresh rate: 82
CAS latencies: 1C
Write latencies: 02
tRP: 60
tRCD: 60
DDR DIMM: data bus width is 64 bit without ECC
DDRC ECC mode: OFF
SDRAM on Local Bus: 64 MB
DDR RAM: 1024 MB
FLASH: 16 MB
PCI clock is 66MHz
PCI 32bit bus on PMC1 & PMC2 & PMC3
In: serial
Out: serial
Err: serial
Net: UEC: PHY is Marvell 88E11x1 (1410cc1)
FSL UEC0: Full Duplex
FSL UEC0: Speed 1000BT
FSL UEC0: Link is up
FSL UEC0
Hit any key to stop autoboot: 0
=> bootm fed00000 fe900000
## Booting image at fed00000 ...
Image Name: Linux-2.6.11
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 1054435 Bytes = 1 MB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
## Loading RAMDisk Image at fe900000 ...
Image Name: uboot ext2 ramdisk rootfs
Image Type: PowerPC Linux RAMDisk Image (gzip compressed)
Data Size: 3195657 Bytes = 3 MB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Loading Ramdisk to 0fc9a000, end 0ffa6309 ... OK