Hi Roy,
I could definitely use such a howto. I have applied the patches to the current mainline u-boot head and try to boot my A13-OlinXino Wifi board in FEL mode. I can compile and boot into u-boot via FEL. However, I get these errors when I have CONFIG_SPL_NAND_SUPPORT defined:
U-Boot SPL 2015.07-rc1-00276-g77792f9-dirty (May 21 2015 - 19:15:54) DRAM: 512 MiB Failed to set core voltage! Can't set CPU frequency sunxi board_nand_init() Nand initialised Error: 1 ECC failures detected Error: 512 ECC failures detected
This is my configs/A13-OLinuXino_defconfig looks like this: CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=2,AXP209_POWER,USB_EHCI,SYS_MAX_NAND_DEVICE=1,SYS_NAND_BASE=0x00" CONFIG_NAND=y
CONFIG_SUNXI_NAND=y
CONFIG_SUNXI_DMA=y
CONFIG_CMD_NAND=y
CONFIG_SPL_NAND_SUPPORT=y
CONFIG_SPL=y
CONFIG_FDTFILE="sun5i-a13-olinuxino.dtb"
CONFIG_USB1_VBUS_PIN="PG11"
CONFIG_VIDEO_HDMI=n
CONFIG_VIDEO_VGA_VIA_LCD=y
CONFIG_VIDEO_VGA_VIA_LCD_FORCE_SYNC_ACTIVE_HIGH=y
# For use with the Olimex 7" LCD module, adjust timings for other displays # Set video-mode=sunxi:800x600-24@60,monitor=lcd in the env. to enable CONFIG_VIDEO_LCD_MODE="x:800,y:480,depth:18,pclk_khz:33000,le:16,ri:209,up:22,lo:22,hs:30,vs:1,sync:3,vmode:0" CONFIG_VIDEO_LCD_POWER="AXP0-0"
CONFIG_VIDEO_LCD_BL_PWM="PB2"
CONFIG_ARM=y
CONFIG_ARCH_SUNXI=y
CONFIG_MACH_SUN5I=y
CONFIG_DRAM_CLK=408
CONFIG_DRAM_ZQ=123
CONFIG_DRAM_EMR1=0
CONFIG_DEFAULT_DEVICE_TREE="sun5i-a13-olinuxino"
I just found out in the sun5i-a13-olinuxino.dts file are no nand settings. I guess I can find the information in the linux-sunxi 3.4 kernels fex file for the olinuxio and need to convert to dts, correct?
I am happy about any hints / comments.
Thanks Alex
On Thursday, May 21, 2015 at 11:08:24 AM UTC-7, Hans de Goede wrote:
Hi Roy,
On 21-05-15 15:59, Roy Spliet wrote:
The following patches take the work by Daniel Kochmánski, and make some heavy modifications for readability and functionality, based on Boris Brezillon's Linux driver. Tested on an Olimex Lime w/ A20. Patches are sent as RFC. Open questions:
- Config options added are partially NAND-chip specific. Some options
can
be autodetected based on the NAND ID, others require either
brute-forcing
or config options like these. Do they belong in sunxi-common? Should we make a Kconfig option for this? If bikeshedding is desired, are
defines
in sunxi-common.h good enough for now?
- Style is mostly kernel-like. Satisfied?
- Daniel: do you think we can work from here?
Please comment away!
Cool stuff. Overall this looks good I'll reply with more detailed feedback to your individual patches, 2 questions:
- Can you provide a quick howto (at developer level) on how to actually
get the spl and u-boot into the nand, what I'm looking for is unstructions like this:
a) Take this git repo + branch, build a kernel from it b) Look at this dts file for a nand settings example, adjust it for your board c) Once booted into the kernel using an updated dts you should have these block devices, dd spl to this one, and u-boot to this one.
No more to go more detailed then that :)
- What is the plan to add support for loading files from nand in u-boot
proper, so that we can get (e.g.) extlinux.conf + kernel +dtb from a /boot on nand ?
Regards,
Hans