Hello
I am a happy yundoo y8 user. The android 7.1 is working quite well for me... but... I wanted to try linux and I think I have bricked the Y8.
What I did? I got the linux image for an almost identical RK3399 device ( https://en.opensuse.org/HCL:Yundoo-Y8 ) and I flashed it with the command: upgrade_tool uf linux_image.img
After this, at power on with the red light is not switching to blue nor it boots. Recovery mode (the button hidden inside the audio jack) is not working: the device is not detected in the USB with rkflashkit (before flashing it was appearing).
So, I installed a TTY serial cable to these points:
and I got this log:
Searching the net (topic: Unhandled Exception in EL3) I found another person having same issue as my Y8 which he resolved by resetting the device short-circuiting what he called testpoints. I believe that these testpoints are the MASKROM points that shortcircuit emmc clock. But I am not sure. He says:
I think that in the Yundoo Y8 board, these MASKROM or test points are these:
If I shortcircuit the GND to the above ending of the resistor, the one that is pointed by the eMMC clock's arrow, then I get no log at all in the TTY terminal and the USB-C doesn't become accessible either.
So, I shortcircuited the points GND and the other copper point in the image beside the 22ohm label (the one below the resistor) and the emmc seems to be not accessible. Also, some kind of reset seems to happen, but when I release the points, the Unhandled Exception in EL3 hits again.
This is the log in the TTY terminal while shortcircuiting the points:
After this I don't know what to do.
EDIT: I made a backup for all the partitions with rkflashkit before flashing the linux image.
Does anybody knows how to solve this issue... or... is my Yundoo Y8 bricked forever?
I am a happy yundoo y8 user. The android 7.1 is working quite well for me... but... I wanted to try linux and I think I have bricked the Y8.
What I did? I got the linux image for an almost identical RK3399 device ( https://en.opensuse.org/HCL:Yundoo-Y8 ) and I flashed it with the command: upgrade_tool uf linux_image.img
After this, at power on with the red light is not switching to blue nor it boots. Recovery mode (the button hidden inside the audio jack) is not working: the device is not detected in the USB with rkflashkit (before flashing it was appearing).
So, I installed a TTY serial cable to these points:
and I got this log:
Code:
DDR Version 1.07 20161103 In Channel 0: DDR3, 666MHz Bus Width=32 Col=10 Bank=8 Row=15/15 CS=2 Die Bus-Width=16 Size=2048MB Channel 1: DDR3, 666MHz Bus Width=32 Col=10 Bank=8 Row=15/15 CS=2 Die Bus-Width=16 Size=2048MB 256B stride ch 0 ddrconfig = 0x101, ddrsize = 0x2020 ch 1 ddrconfig = 0x101, ddrsize = 0x2020 pmugrf_os_reg[2] = 0x3AA17AA1, stride = 0xD OUT Boot1: 2016-07-29, version: 1.05 CPUId = 0x0 ChipType = 10 1838 SdmmcInit=2 0 BootCapSize=100000 UserCapSize=29820MB FwPartOffset=2000 , 100000 SdmmcInit=0 20 StorageInit ok = 68770 LoadTrustBL No find bl30.bin theLoader 200000 89483 LoaderFlag2: 0x0 Unhandled Exception in EL3. x30 = 0x0000000000045004 x0 = 0x0f1e2d3c4b5a6978 x1 = 0x00000000ff3b1fd0 x2 = 0x0000000000000018 x3 = 0x0000000000000018 x4 = 0x0000000000000018 x5 = 0x0000000000000000 x6 = 0x0000000000000000 x7 = 0x0000000000000000 x8 = 0x0000000003011908 x9 = 0x0000000000010080 x10 = 0x0000000000021888 x11 = 0x0000000000000400 x12 = 0x000000000000000a x13 = 0x000000000000000f x14 = 0x0000000000000002 x15 = 0x0000000000000004 x16 = 0x0000000008000000 x17 = 0x0000000000000000 x18 = 0x0000000000800000 x19 = 0x0f1e2d3c4b5a6978 x20 = 0x0000000000049220 x21 = 0x0f1e2d3c4b5a6978 x22 = 0x00000000000418f9 x23 = 0x0000000000041000 x24 = 0x0000000000049230 x25 = 0x0000000000000001 x26 = 0x00000000ff8c2000 x27 = 0x0000000000000110 x28 = 0x0000000000000110 x29 = 0x00000000000468c0 scr_el3 = 0x0000000000000238 sctlr_el3 = 0x0000000000c5383a cptr_el3 = 0x0000000000000000 tcr_el3 = 0x0000000000000000 daif = 0x00000000000003c0 mair_el3 = 0x44e048e000098aa4 spsr_el3 = 0x00000000600002cc elr_el3 = 0x0000000000011810 ttbr0_el3 = 0x004d002001480e51 esr_el3 = 0x0000000096000000 far_el3 = 0x0f1e2d3c4b5a6978 spsr_el1 = 0x00000000102d62d0 elr_el1 = 0xb2417e412a4080c6 spsr_abt = 0x000000002000ba50 spsr_und = 0x0000000042194012 spsr_irq = 0x000000005a022200 spsr_fiq = 0x0000000098000228 sctlr_el1 = 0x0000000000c52838 actlr_el1 = 0x0000000000000000 cpacr_el1 = 0x0000000000000000 csselr_el1 = 0x0000000000000000 sp_el1 = 0x1140d14022000309 esr_el1 = 0x0000000010000840 ttbr0_el1 = 0x5864082d50290402 ttbr1_el1 = 0x0b8a1f2828082009 mair_el1 = 0x44e048e000098aa4 amair_el1 = 0x0000000000000000 tcr_el1 = 0x0000000000000000 tpidr_el1 = 0x060828054d204008 tpidr_el0 = 0x2120be1112480006 tpidrro_el0 = 0x00020057c542220c dacr32_el2 = 0x0000000000208021 ifsr32_el2 = 0x0000000000000000 par_el1 = 0x4400004909600104 mpidr_el1 = 0x0000000080000000 afsr0_el1 = 0x0000000000000000 afsr1_el1 = 0x0000000000000000 contextidr_el1 = 0x0000000000000000 vbar_el1 = 0x0000000000000000 cntp_ctl_el0 = 0x0000000000000000 cntp_cval_el0 = 0x04140f1429c21301 cntv_ctl_el0 = 0x0000000000000002 cntv_cval_el0 = 0x480001e005006018 cntkctl_el1 = 0x0000000000000000 fpexc32_el2 = 0x0000000000000700 sp_el0 = 0x00000000000468c0 isr_el1 = 0x0000000000000000 cpuectlr_el1 = 0x0000000000000040 cpumerrsr_el1 = 0x0000000000000000 l2merrsr_el1 = 0x0000000000000000 gicc_hppir = 0x0000000000000000 gicc_ahppir = 0x0000000000000000 gicc_ctlr = 0x0000000014000082 gicd_ispendr regs (Offsets 0x200 - 0x278) 0000000000000200: 0x0000041800000000 0000000000000208: 0x0000000000000000 0000000000000210: 0x0000000000000010 0000000000000218: 0x0000000000000000 0000000000000220: 0x0000000000000000 0000000000000228: 0x0000000000000000 0000000000000230: 0x0000000000000000 0000000000000238: 0x0000000000000000 0000000000000240: 0x0000000000000000 0000000000000248: 0x0000000000000000 0000000000000250: 0x0000000000000000 0000000000000258: 0x0000000000000000 0000000000000260: 0x0000000000000000 0000000000000268: 0x0000000000000000 0000000000000270: 0x0000000000000000 0000000000000278: 0x0000000000000000 cci_snoop_ctrl_cluster0 = 0x00000000c0000000 cci_snoop_ctrl_cluster1 = 0x00000000c0000000
Code:
http://webcache.googleusercontent.com/search?q=cache:SWO0NRo6sNMJ:bbs.t-firefly.com/forum.php%3Fmod%3Dviewthread%26tid%3D1980+&cd=3&hl=es&ct=clnk&gl=es&client=ubuntu "With the console cable in place, I was able to determine that "mask rom" was not being entered. I used a piece of wire to short the test points and reset the device until it appeared over USB. At this point I was able to erase and re-flash it with the Ubuntu image. For anyone else that experiences this, the tip is to make sure you have good contact on the test points. Also, its much easier to press the reset button while shorting the pins than it is to plug/un-plug the power connector."
I think that in the Yundoo Y8 board, these MASKROM or test points are these:
If I shortcircuit the GND to the above ending of the resistor, the one that is pointed by the eMMC clock's arrow, then I get no log at all in the TTY terminal and the USB-C doesn't become accessible either.
So, I shortcircuited the points GND and the other copper point in the image beside the 22ohm label (the one below the resistor) and the emmc seems to be not accessible. Also, some kind of reset seems to happen, but when I release the points, the Unhandled Exception in EL3 hits again.
This is the log in the TTY terminal while shortcircuiting the points:
Code:
DDR Version 1.07 20161103 In Channel 0: DDR3, 666MHz Bus Width=32 Col=10 Bank=8 Row=15/15 CS=2 Die Bus-Width=16 Size=2048MB Channel 1: DDR3, 666MHz Bus Width=32 Col=10 Bank=8 Row=15/15 CS=2 Die Bus-Width=16 Size=2048MB 256B stride ch 0 ddrconfig = 0x101, ddrsize = 0x2020 ch 1 ddrconfig = 0x101, ddrsize = 0x2020 pmugrf_os_reg[2] = 0x3AA17AA1, stride = 0xD OUT Boot1: 2016-07-29, version: 1.05 CPUId = 0x0 ChipType = 10 1844 mmc: ERROR: SDHCI:Transfer data timeout mmc: ERROR: SDHCI ERR:cmd:0x153a,stat:0x0 mmc: ERROR: Tuning procedure failed, falling back to fixed sampling clock mmc: ERROR: tuning execution failed emmc reinit mmc: ERROR: SDHCI:Transfer data timeout mmc: ERROR: SDHCI ERR:cmd:0x153a,stat:0x0 mmc: ERROR: Tuning procedure failed, falling back to fixed sampling clock mmc: ERROR: tuning execution failed SdmmcInit=2 1 SdmmcInit=0 20 StorageInit ok = 25547134 LoadTrustBL LoadTrustBL error:-1 powerOn 25959639 Usb re Boot. 5 Usb re Boot. 10000010 Usb re Boot. 20000013 SoftReset DDR Version 1.07 20161103 In soft reset SRX Channel 0: DDR3, 666MHz Bus Width=32 Col=10 Bank=8 Row=15/15 CS=2 Die Bus-Width=16 Size=2048MB Channel 1: DDR3, 666MHz Bus Width=32 Col=10 Bank=8 Row=15/15 CS=2 Die Bus-Width=16 Size=2048MB 256B stride ch 0 ddrconfig = 0x101, ddrsize = 0x2020 ch 1 ddrconfig = 0x101, ddrsize = 0x2020 pmugrf_os_reg[2] = 0x3AA17AA1, stride = 0xD OUT Boot1: 2016-07-29, version: 1.05 CPUId = 0x0 ChipType = 10 1907 SdmmcInit=2 0 BootCapSize=100000 UserCapSize=29820MB FwPartOffset=2000 , 100000 SdmmcInit=0 20 StorageInit ok = 69508 LoadTrustBL No find bl30.bin theLoader 200000 90358 LoaderFlag2: 0x5242c300 Unhandled Exception in EL3. x30 = 0x0000000000045004 x0 = 0x0f1e2d3c4b5a6978 x1 = 0x00000000ff3b1fd0 x2 = 0x0000000000000018 x3 = 0x0000000000000018 x4 = 0x0000000000000018 x5 = 0x0000000000000000 x6 = 0x0000000000000000 x7 = 0x0000000000000000 x8 = 0x0000000003011908 x9 = 0x0000000000010080 x10 = 0x0000000000021888 x11 = 0x0000000000000400 x12 = 0x000000000000000a x13 = 0x000000000000000f x14 = 0x0000000000000002 x15 = 0x0000000000000004 x16 = 0x0000000008000000 x17 = 0x0000000000000000 x18 = 0x0000000000800000 x19 = 0x0f1e2d3c4b5a6978 x20 = 0x0000000000049220 x21 = 0x0f1e2d3c4b5a6978 x22 = 0x00000000000418f9 x23 = 0x0000000000041000 x24 = 0x0000000000049230 x25 = 0x0000000000000001 x26 = 0x00000000ff8c2000 x27 = 0x0000000000000110 x28 = 0x0000000000000110 x29 = 0x00000000000468c0 scr_el3 = 0x0000000000000238 sctlr_el3 = 0x0000000000c5383a cptr_el3 = 0x0000000000000000 tcr_el3 = 0x0000000000000000 daif = 0x00000000000003c0 mair_el3 = 0x44e048e000098aa4 spsr_el3 = 0x00000000600002cc elr_el3 = 0x0000000000011810 ttbr0_el3 = 0x004d000001480e50 esr_el3 = 0x0000000096000000 far_el3 = 0x0f1e2d3c4b5a6978 spsr_el1 = 0x00000000102d62d4 elr_el1 = 0xb2415e412a408046 spsr_abt = 0x000000002000ba40 spsr_und = 0x0000000042194012 spsr_irq = 0x000000005a022220 spsr_fiq = 0x000000009e000228 sctlr_el1 = 0x0000000000c52838 actlr_el1 = 0x0000000000000000 cpacr_el1 = 0x0000000000000000 csselr_el1 = 0x0000000000000000 sp_el1 = 0x1140d14022000309 esr_el1 = 0x0000000010000940 ttbr0_el1 = 0x5864082d50290402 ttbr1_el1 = 0x0b8a1f2828682009 mair_el1 = 0x44e048e000098aa4 amair_el1 = 0x0000000000000000 tcr_el1 = 0x0000000000000000 tpidr_el1 = 0x040828074d204009 tpidr_el0 = 0x2400be9512480006 tpidrro_el0 = 0x00220257c542220c dacr32_el2 = 0x0000000000200021 ifsr32_el2 = 0x0000000000000000 par_el1 = 0x4000000909640104 mpidr_el1 = 0x0000000080000000 afsr0_el1 = 0x0000000000000000 afsr1_el1 = 0x0000000000000000 contextidr_el1 = 0x0000000000000000 vbar_el1 = 0x0000000000000000 cntp_ctl_el0 = 0x0000000000000000 cntp_cval_el0 = 0x04040d1429c21301 cntv_ctl_el0 = 0x0000000000000002 cntv_cval_el0 = 0x400401e005006008 cntkctl_el1 = 0x0000000000000000 fpexc32_el2 = 0x0000000000000700 sp_el0 = 0x00000000000468c0 isr_el1 = 0x0000000000000000 cpuectlr_el1 = 0x0000000000000040 cpumerrsr_el1 = 0x0000000000000000 l2merrsr_el1 = 0x0000000000000000 gicc_hppir = 0x0000000000000000 gicc_ahppir = 0x0000000000000000 gicc_ctlr = 0x0000000014000082 gicd_ispendr regs (Offsets 0x200 - 0x278) 0000000000000200: 0x0000001800000000 0000000000000208: 0x0000000000000000 0000000000000210: 0x0000000000000010 0000000000000218: 0x0000000000000000 0000000000000220: 0x0000000000000000 0000000000000228: 0x0000000000000000 0000000000000230: 0x0000000000000000 0000000000000238: 0x0000000000000000 0000000000000240: 0x0000000000000000 0000000000000248: 0x0000000000000000 0000000000000250: 0x0000000000000000 0000000000000258: 0x0000000000000000 0000000000000260: 0x0000000000000000 0000000000000268: 0x0000000000000000 0000000000000270: 0x0000000000000000 0000000000000278: 0x0000000000000000 cci_snoop_ctrl_cluster0 = 0x00000000c0000000 cci_snoop_ctrl_cluster1 = 0x00000000c0000000
EDIT: I made a backup for all the partitions with rkflashkit before flashing the linux image.
Does anybody knows how to solve this issue... or... is my Yundoo Y8 bricked forever?
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