Dual boot options for ROCK64?

[maal]

What works for me:


/boot/extlinux/extlinux.conf

Code:

TIMEOUT 30
DEFAULT kernel-4.14

MENU TITLE Rock64 boot options


LABEL kernel-4.14
   kernel /boot/Image-4.14
   fdt /boot/rk3328-rock64.dtb-4.14
   append earlycon=uart8250,mmio32,0xff130000 rw root=/dev/mmcblk0p1 rootwait rootfstype=ext4 init=/sbin/init coherent_pool=1M ethaddr=${ethaddr} eth1addr=${eth1addr} serial=${serial#}

LABEL kernel-4.15-rc6
   kernel /boot/Image-4.15-rc6
   fdt /boot/rk3328-rock64.dtb-4.15-rc6
   append earlycon=uart8250,mmio32,0xff130000 rw root=/dev/mmcblk0p1 rootwait rootfstype=ext4 init=/sbin/init coherent_pool=1M ethaddr=${ethaddr} eth1addr=${eth1addr} serial=${serial#}

LABEL kernel-4.4
   kernel /boot/Image
   initrd /boot/initrd.img
   fdt /boot/dtb
   append earlycon=uart8250,mmio32,0xff130000 rw root=LABEL=linux-root rootwait rootfstype=ext4 init=/sbin/init coherent_pool=1M ethaddr=${ethaddr} eth1addr=${eth1addr} serial=${serial#}

Boot log:

Code:

DDR version 1.06 20170424
In
LPDDR3
786MHz
Bus Width=32 Col=11 Bank=8 Row=15/15 CS=2 Die Bus-Width=32 Size=4096MB
ddrconfig:7
OUT
Boot1 Release Time: 2017-05-18, version: 2.43
ChipType = 0x11, 127
emmc reinit
emmc reinit
SdmmcInit=2 20
SdmmcInit=0 0
BootCapSize=0
UserCapSize=15084MB
FwPartOffset=2000 , 0
StorageInit ok = 50220
Raw SecureMode = 0
SecureInit read PBA: 0x4
SecureInit read PBA: 0x404
SecureInit read PBA: 0x804
SecureInit read PBA: 0xc04
SecureInit read PBA: 0x1004
SecureInit ret = 0, SecureMode = 0
LoadTrustBL
No find bl30.bin
No find bl32.bin
Load uboot, ReadLba = 2000
Load OK, addr=0x200000, size=0x7bd90
RunBL31 0x10000
NOTICE:  BL31: v1.4(release):v1.4-218-g3b6ceeff
NOTICE:  BL31: Built : 11:11:11, Sep 30 2017
NOTICE:  BL31:Rockchip release version: v1.2


U-Boot 2017.09-00396-g6ca43a58db (Sep 30 2017 - 11:11:57 +0200)

Model: Rockchip RK3328 EVB
DRAM:  4 GiB
MMC:   rksdmmc@ff500000: 1, rksdmmc@ff520000: 0
*** Warning - bad CRC, using default environment

In:    serial@ff130000
Out:   serial@ff130000
Err:   serial@ff130000
Model: Rockchip RK3328 EVB
Net:   Net Initialization Skipped
No ethernet found.
Hit any key to stop autoboot:  0
Card did not respond to voltage select!
mmc_init: -95, time 9
switch to partitions #0, OK
mmc1 is current device
Scanning mmc 1:1...
Found /boot/extlinux/extlinux.conf
Retrieving file: /boot/extlinux/extlinux.conf
891 bytes read in 73 ms (11.7 KiB/s)
Rock64 boot options
1:      kernel-4.14
2:      kernel-4.15-rc6
3:      kernel-4.4
Enter choice: 2
2:      kernel-4.15-rc6
Retrieving file: /boot/Image-4.15-rc6
13763072 bytes read in 1312 ms (10 MiB/s)
append: earlycon=uart8250,mmio32,0xff130000 rw root=/dev/mmcblk0p1 rootwait rootfstype=ext4 init=/sbin/init coherent_pool=1M ethaddr= eth1addr= serial=
Retrieving file: /boot/rk3328-rock64.dtb-4.15-rc6
30605 bytes read in 101 ms (295.9 KiB/s)
## Flattened Device Tree blob at 01f00000
  Booting using the fdt blob at 0x1f00000
  Loading Device Tree to 00000000fcf27000, end 00000000fcf3178c ... OK

Starting kernel ...