LayerscapeのトピックRe: LS2088A QSPI flash corrupting

LS2088A QSPI flash corrupting

yutiamonkar — Sat, 28 Oct 2017 14:29:33 GMT

I am using MT25Q512A QSPI flash for a custom LS2088A board.I am able to boot the board by flashing PBL and uboot into the QSPI flash.I am using the following partitions in the QSPI Flash:

0x0 - 0xFFFF --- PBL (64KB)

0x10000 - 0x10FFFF --- U-boot(1MB)

0x110000 - 0xE0FFFF --- Kernel(13MB)

0xE10000 - 0xE1FFFF --- DTB(64KB)

0xE20000 - 0x171FFFF --- Ramdisk(9MB)

0x2910000 - 0x2E0FFFF --- MC(5MB)

0x2E10000 - 0x2E1FFFF --- DPC(64KB)

0x2E20000 - 0x2E2FFFF --- DPL(64KB)

I am able to flash PBL, Uboot, kernel, MC, DPC, DPL into the flash in U-Boot using sf commands. But when I try to flash the ramdisk it is corrupting the flash and I am unable to boot the board. But when I flash the ramdisk alone without kernel image then it is not corrupting the flash.

Re: LS2088A QSPI flash corrupting

ufedor — Mon, 30 Oct 2017 07:06:35 GMT

Please provide U-Boot booting log and log for all the SPI flash programming operations.

Re: LS2088A QSPI flash corrupting

yutiamonkar — Mon, 30 Oct 2017 08:22:28 GMT

Please find attached the uboot and spi flash programming operation logs.

Re: LS2088A QSPI flash corrupting

ufedor — Mon, 30 Oct 2017 08:55:40 GMT

From the provided logs it is not clear how the issue manifests itself.

Also, what exactly means:

> when I flash the ramdisk alone without kernel image then it is not corrupting the flash.

Re: LS2088A QSPI flash corrupting

yutiamonkar — Mon, 30 Oct 2017 13:00:12 GMT

Hi
After flashing kernel/ramdisk,if I write any file greater than 5MB into the consecutive location,it corrupts the previous partitions of the flash.For eg:If I flash kernel at 0x110000 location and then write any file greater than 5 MB consecutive to this location (0xE10000) it corrupts the flash.

Re: LS2088A QSPI flash corrupting

ufedor — Mon, 30 Oct 2017 15:27:30 GMT

It looks like the QSPI is operating in 24-bit mode.

Re: LS2088A QSPI flash corrupting

yutiamonkar — Tue, 31 Oct 2017 09:23:08 GMT

How to set the QSPI in 32bit mode? In u-boot code they have mentioned the following about 4-Byte addressing mode:

/*
* So far, the 4-byte address mode haven't been supported in U-Boot,
* and make sure the chip (> 16MiB) in default 3-byte address mode,
* in case of warm bootup, the chip was set to 4-byte mode in kernel.
*/
if (flash->size >> (flash->dual_flash & SF_DUAL_STACKED_FLASH ? 1 : 0)
> SPI_FLASH_16MB_BOUN) {
if (spi_flash_cmd_4B_addr_switch(flash, false, idcode[0]) < 0)
debug("SF: enter 3B address mode failed\n");
}

Re: LS2088A QSPI flash corrupting

ufedor — Tue, 31 Oct 2017 14:09:40 GMT

Please create a Technical Case:

https://community.freescale.com/thread/381898

Re: LS2088A QSPI flash corrupting

pradeep_t — Mon, 15 Apr 2019 06:14:55 GMT

Hi Ufedor,

We are also facing same issue, can we get the solution