就版本、nand nor、 led三样本周，六六六
1、
bsp坏块---
=> nand bad
Device 0 bad blocks:
04760000
06000000
07fe0000
=> nand dump 04760000
Page 04760000 dump:
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
2、 cspboot 升级，代码阅读
cspboot_pdt.c
--最基本 极easy-- 下次不要对lwu 说l
U_BOOT_CMD ( do_upgrade )
进入流程--
pdt_cspboot_upgrade
zbi->upgrade
//即 zteboot_upgrade
后面基本就是
zbi->upgrade_firmware