[Serial]

Ʊʾ뵥нʧܣ鴮

[CPU/Board Power-On]

飺
1.  Ƿ   
HiBurnǷѡȷĴڡӦΪ115200bpsλ8ֹͣλ1żλУλΪ0.

2.  Ƿϵ
ȷϵдǷ15ڸϵ硣

3.  CPU Ƿ   
ҪԴ3.3V_standby3.3V_MOS1.1V_CORE1.1V_CPU   ע⣺CPUϵǷйȵڸرյԴ4·Եص迹Դ⡣

4. ϵͳ24MʱǷ 
ʹñDCˣѹӦΪ1.65Vңв죻ʹʾ۲⾧˲ӦġԼ3.3Vp-p24MҲ

5. 鴮ڵ·  
оƬCMOSƽ3.3VPCRS232ƽעƽת·ƣ

6. CPUǷ񺸽ãֺܳ麸

[BOOTROM]

ƣ߸оƬ

[Read eMMC/SD]

Ʊʾ eMMC/SD ״̬飺
1.eMMC/SDǷ⡢SDǷϣ
2.eMMC/SDǷҪ󹩵3.3V5%
3.eMMC/SDӿڴ衢Ƿϼ/ֵǷȷ
4.һeMMC/SD¼boot󣩣

[DDR Initialization]

飺
1. оƬͺ빤ѡоƬǷһ¡ֱӲ鿴ͺŻͨڲ鿴ǰͺţ

2. bootʱʹõ*.regļ͵ǰǷȫƥ䣬Ӧϵϸ˵ο
linux汾Ŀ¼/source/boot/sysreg/read_cn.xls
android 汾Ŀ¼device/hisilicon/bigfish/sdk/source/boot/sysreg/read_cn.xls

3. DDR 1V5Ƿ񹩵磬DDR 1V5ݶԵ迹ԴǷ·

4. DDRĲοѹǷҪ0.5VDD1%

5. 鿴DDRǷ񺸽Ƿ񺸽Ӵ

6. оƬCOREԴǷ񹩵ҪVDD5%

7. VTTƥ䣬VTTѹǷҪ0.5VDD5%

8. ʹõDDRڼбУ
[DDR Training]

ƱʾDDRźŴ⣬ݿ̨ĴӡһŲ⣺

DDR training V1˵
1.write leveling,ӡ: SWL + 0000000XXʾӦbyte 
2.dqs gating,ӡ: SGA + 0000000XXʾӦbyte 
3.Ӳdqs gating,ӡ: HGA + 00000000
4.Ӳread dataeye,ӡ: HRD + 00000000
5.read dataeye,ӡ: SRD + 0000000X,XʾһDQ; 
6.write dataeye,ӡ: SWD + 0000000XXʾһDQ; 

DDR training V2˵
1.write levelingӡDDRTR WL Err: PhyXXXXXXXXByteXXXXXXXX
2.ӲgateӡDDRTR HWG Err: PhyXXXXXXXX
3.gateӡDDRTR Gate Err: PhyXXXXXXXXByteXXXXXXXX	
4.DDRTӡDDRTR DDRT Err: PhyXXXXXXXX
5.ӲdataeyeӡDDRTR HWRD Err: PhyXXXXXXXX
6.mprӡDDRTR Dataeye Err: PhyXXXXXXXXByteXXXXXXXXDQXXXXXXXX
7.dataeyeӡDDRTR Dataeye Err: PhyXXXXXXXXByteXXXXXXXXDQXXXXXXXX
8.Lowpower command addresssӡDDRTR LPCA Err: PhyXXXXXXXX

DDR training V2 ˵
DDREXXXXXXXXPXXXXXXXXBXXXXXXXXDXXXXXXXX
1.ĸEΪErrorдʾ룬8λΪʮƣ
0x00000001 Write Leveling error
0x00000002 Hardware Gating error
0x00000004 Software Gating error
0x00000008 DDRT test time out
0x00000010 Hardware read dataeye error
0x00000020 MPR error
0x00000040 Dataeye error
0x00000080 LPDDR CA error
2.ĸPʾDDR PHYַ8λΪʮơ
3.ĸBʾByte ţ8λΪʮơ
4.ĸDʾDQ ţ8λΪʮơ	

ϵͳӡDDR⣬λΪ
1.鵥ӲCOREDDRԴDDRоƬĺӡBOMϣ
2.ȷϴڴӡȷϳDDR
3.ƵŲͨ⣬ź⣻
4.DDRоƬŲ麸ӡPCBƻ߼ӹ⡣
ڲҪٶλƼͨӡжϳDDRֱӸDDR



[Fastboot Start]

飺
1Fastboot汾Ƿ͵ƥ䣬*.regļǷ͵䣬PCB㡢DDRȣ

2VDD_CPUVDD_COREĵѹֵǷ

3DDRƵ汾ǷDDRأοDDRļ鷽

[Image-Flash Match]

ƱʾǰfastbootFlashƥ

[eMMC/SD Flash]

ƱʾӲSDIO_CARD_DETECT ܽ⣬飺

1SDIO_CARD_DETECTǷ͵ƽҪΪ͵ƽǷ

2SDIO_CARD_DETECTǷԵʺVDD·

ƵƱʾEmmc

[NAND Flash]

飺

ϺӵNAND FLASHǷں˼бС

ƵƱʾNand

[Network]

飺

̨ӡTime out while receiving command execute result!ʾδӣ

̨ӡDownloading: *T T T T T Tʾǰδͨ״̬

[Over]