Hi All,
We are using CBB RDK 1.8 as reference for our development.
We have use MT29F4G16ABAEAH4 nand.
We are able to detect NAND as 512 MB.
We have followed update.txt for flashing u-boot.min, u-boot.bin and Kernel to nand.
//uboot-min
mmc rescan 0;fatload mmc 0 0x81000000 u-boot.min.nand;nand erase 0x0 0x20000;nand write.i 0x81000000 0x0 0x20000
// uboot
mmc rescan 0;fatload mmc 0 0x81000000 u-boot.bin;nand erase 0x20000 0x60000;nand write.i 0x81000000 0x20000 0x60000
// kernel
mmc rescan 0;fatload mmc 0 0x81000000 uImage;nand erase 0x00280000 0x00300000;nand write.i 0x81000000 0x00280000 0x300000;
- u-boot is able to boot from NAND successfully but when it reads Kernel by below command it hangs at "Starting kernel ...".
- We are able to boot the same kernel uImage from MMC.
=================================================================================================
// Write uImage
DM385:~#mmc rescan 0;fatload mmc 0 0x81000000 uImage;nand erase 0x00280000 0x00300000;nand write.i 0x81000000 0x00280000 0x300000;
reading uImage
2841232 bytes read
NAND erase: device 0 offset 0x280000, size 0x300000
Erasing at 0x560000 -- 100% complete.
OK
NAND write: device 0 offset 0x280000, size 0x300000
3145728 bytes written: OK
DM385::~#nand read 0x81000000 0x00280000 0x280000;bootm
NAND read: device 0 offset 0x280000, size 0x280000
2621440 bytes read: OK
## Booting kernel from Legacy Image at 81000000 ...
Image Name: Linux-2.6.37_DM385_CBB_0.80.00
Created: 2015-03-15 8:03:55 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2841168 Bytes = 2.7 MiB
Load Address: 80008000
Entry Point: 80008000
Loading Kernel Image ... OK
OK
Starting kernel ...
===============================================================================
One more observation we found after enabling NAND debug in u-boot is that,
We are using Micron "MT29F4G16ABAEAH4" part but we are getting below below print
=================================
DM385-GP rev 1.1
ARM clk: 1000MHz
DDR clk: 533MHz
L3 clk: 200MHz
IVA clk: 297MHz
ISS clk: 400MHz
DSP Default OFF
DSS Default OFF
DRAM: 2 GiB
NAND: HW ECC BCH8 Selected
NAND device: Manufacturer ID: 0x01, Chip ID: 0xcc (AMD NAND 512MiB 3,3V 16-bit)
512 MiB
===============================================================
For Micron Manufacturer ID should be "NAND device: Manufacturer ID: 0x2c, Chip ID: 0xcc (Micron NAND 512MiB 3,3V 16-bit)" .
1. Do we need to add any change in u-boot and kernel to support MT29F4G16ABAEAH4 ?
2. Why Kernel hangs at "Starting kernel ..." ?
Please advise
Thanks in advance,
Kalpesh
