Hi all
Il sab 20 mag 2023, 19:28 Colin Foster colin.foster@in-advantage.com ha scritto:
On Fri, May 19, 2023 at 03:41:34PM +0300, Roger Quadros wrote:
Hi Colin,
On 19/05/2023 02:19, Colin Foster wrote:
Hi Roger,
Can you please share your spl/u-boot.cfg?
Attached
Couple of questions there
- CONFIG_MTDPARTS_DEFAULT
"mtdparts=nandflash:0x20000(xload_raw),0x180000(u-boot),0x180000(u-boot-2),0x1fce0000(main)"
Is this correct and matches with what kernel sees? I couldn't see the NAND partition table in the Kernel Device tree patch.
Yes, this is correct. I intentionally left my MTD Partitions out of the kernel patch, since I don't want any changes I might make to the flash partitions to require further patches. I'm currently at this structure (SPL, 2x U-Boot, and main UBI with A/B partitions and 2x U-Boot Envs)
The SD Boot version of U-Boot doesn't use NAND, so it might have a stale partition layout that I'll need to remove / modify.
Was any end up here?
Michael
#define CONFIG_SYS_NAND_U_BOOT_OFFS 0x20000 #define CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND 0x1a0000
These don't seem to match what you have defined in MTDPARTS_DEFAULT. Which one is correct?
This matches the above partition layout. 0x180000 + 0x20000 = 0x1a0000.
It wasn't until recently I realized I needed to remove CONFIG_SPL_RAW_IMAGE_SUPPORT in order for this fallback to succeed.
How do you flash the MLO and u-boot image to NAND?
I boot to from SD card, then run a commissioning script that contains:
echo "Erasing MLO partition $MLO_PART" flash_erase $MLO_PART 0 0 echo "Programming MLO partition" nandwrite -a -p $MLO_PART $MLO_FILE echo "Erasing U-Boot partition $U_BOOT_PART" flash_erase $U_BOOT_PART 0 0 echo "Programming U-Boot partition" nandwrite -a -p $U_BOOT_PART $U_BOOT_FILE echo "Erasing U-Boot redundant partition $U_BOOT_PART_REDUND" flash_erase $U_BOOT_PART_REDUND 0 0 echo "Programming U-Boot redund partition" nandwrite -a -p $U_BOOT_PART_REDUND $U_BOOT_FILE echo "Clearing UBI partition" flash_erase $UBI_PART 0 0 echo "Formatting UBI partition" ubiformat $UBI_PART -y ubiattach -p $UBI_PART echo "Making UBI volumes" ubimkvol /dev/ubi0 -N env1 -s 0x40000 ubimkvol /dev/ubi0 -N env2 -s 0x40000 ubimkvol /dev/ubi0 -N rootfs-a -s 0xc000000 ubimkvol /dev/ubi0 -N rootfs-b -s 0xc000000 echo "Writing rootfs partitions" ubiupdatevol /dev/ubi0_2 $ROOTFS_FILE ubiupdatevol /dev/ubi0_3 $ROOTFS_FILEFor all these tests I've been manually running the flash_erase / nandwrite process for the SPL / U-Boot partitions.
I tried on AM335x-EVM and it works fine both before and after commit
04fcd25873.
Once change I had to do was to increase the u-boot partition size as u-boot image does not fit in original partition size.
-----boot log follows-----
U-Boot SPL 2023.01-rc4-00381-g04fcd25873-dirty (May 19 2023 - 15:10:15
+0300)
Trying to boot from NAND
U-Boot 2023.01-rc4-00381-g04fcd25873-dirty (May 19 2023 - 15:10:15 +0300)
CPU : AM335X-GP rev 1.0 Model: TI AM335x EVM DRAM: 512 MiB Core: 156 devices, 17 uclasses, devicetree: separate WDT: Started wdt@44e35000 with servicing every 1000ms (60s timeout) NAND: 256 MiB MMC: OMAP SD/MMC: 0 Loading Environment from FAT... Unable to read "uboot.env" from
mmc0:1...
<ethaddr> not set. Validating first E-fuse MAC Net: eth2: ethernet@4a100000, eth3: usb_ether Hit any key to stop autoboot: 0 =>
=> mtd
device nand0 <nand.0>, # parts = 10 #: name size offset mask_flags 0: NAND.SPL 0x00020000 0x00000000 0 1: NAND.SPL.backup1 0x00020000 0x00020000 0 2: NAND.SPL.backup2 0x00020000 0x00040000 0 3: NAND.SPL.backup3 0x00020000 0x00060000 0
I need to go back to the 4460 datasheet. I looked and don't remember seeing anything about an SPL search. I'd sleep better at night knowing that when the day comes I need to update the SPL, I can do so with some redundancy. Sorry - I'm getting off topic.
I'll be back with hardware on Monday to keep looking at this.
4: NAND.u-boot-spl-os 0x00040000 0x00080000 0 5: NAND.u-boot 0x00200000 0x000c0000 0 6: NAND.u-boot-env 0x00020000 0x002c0000 0 7: NAND.u-boot-env.backup10x00020000 0x002e0000 0 8: NAND.kernel 0x00700000 0x00300000 0 9: NAND.file-system 0x0f600000 0x00a00000 0
-- cheers, -roger