S3C6410 Embedded Application Platform Construction (V) - Linux-3.14.4 Ported to OK6410-(Nand Partition Problem)-EEWORLD

Collect

In the previous article, our Linux was able to boot, but when identifying NAND, it failed to obtain the clock source, resulting in the failure of subsequent partitioning.

We found from the startup log:

[06/08-11:25:41:371]s3c24xx-nand s3c6400-nand: failed to get clock

[06/08-11:25:41:371]s3c24xx-nand: probe of s3c6400-nand failed with error –2

So I traced the code:

nandflash driver——s3c2410.c

/* get the clock source and enable it */

info->clk = devm_clk_get(&pdev->dev, "nand");

if (IS_ERR(info->clk)) {

dev_err(&pdev->dev, "failed to get clockn");

err = -ENOENT;

goto exit_error;

}

We found that when we tried to find the "nand" clock source, we could not get it, so we opened S3c2410.c (driversmtdnand)

Then open Clk-s3c64xx.c (driversclksamsung)

I found that there was no Aliases nand in Aliases, so I tried adding the following code: ALIAS(MEM0_NFCON, "s3c6400-nand", "nand"),

/* Aliases for s3c6410-specific clocks. */

static struct samsung_clock_alias s3c6410_clock_aliases[] = {

ALIAS(PCLK_IIC1, "s3c2440-i2c.1", "i2c"),

ALIAS(PCLK_IIS2, "samsung-i2s.2", "iis"),

ALIAS(SCLK_FIMC, "s3c-camif", "fimc"),

ALIAS(SCLK_AUDIO2, "samsung-i2s.2", "audio-bus"),

ALIAS(MEM0_NFCON, "s3c6400-nand", "nand"),

ALIAS(MEM0_SROM, NULL, "srom"),

};

In this case, there should be no problem when going to clk_get.

This mechanism was added after Linux-3.10, and this problem has stuck me for a long time.

We make uImage and test as follows:

From the above we found the following error information:

[06/08-14:18:34:573]nand: No oob scheme defined for oobsize 218

[06/08-14:18:34:573]------------[ cut here ]------------

[06/08-14:18:34:574]kernel BUG at drivers/mtd/nand/nand_base.c:3732!

It turns out that the oobsize of our nandflash is 218, but nand_base.c does not include the processing of 218. Therefore, refer to the 6410 driver and modify nand_base.c. Add the following:

1. Add nand_oob_218 definition

2. Add case 218 processing

OK, let's make uImage again, download it to the board, and start it as follows:

[06/08-14:28:27:608]U-Boot 2010.03-svn3 (May 06 2014 - 22:13:20) for SMDK6410

[06/08-14:28:27:608]

[06/08-14:28:27:608]*******************************************************

[06/08-14:28:27:619] Welcome to Embedded System

[06/08-14:28:27:620] Base On S3C6410 Development

[06/08-14:28:27:620] Date: 2014/4/15 22:00 PM

[06/08-14:28:27:630]*******************************************************

[06/08-14:28:27:631]

[06/08-14:28:27:631]CPU: S3C6410@533MHz

[06/08-14:28:27:631] Fclk = 533MHz, Hclk = 133MHz, Pclk = 66MHz (ASYNC Mode)

[06/08-14:28:27:631]Board: SMDK6410

[06/08-14:28:27:636]DRAM: 256 MB

[06/08-14:28:27:678]Flash: 0 kB

[06/08-14:28:27:679]NAND Flash: 2048 MB

[06/08-14:28:28:799]********************************************************

[06/08-14:28:28:799]Initial LCD controller

[06/08-14:28:28:812] clk_freq:9 MHz, div_freq:13 ,rea_freq:9 MHz

[06/08-14:28:28:812]

[06/08-14:28:28:813] HBP = 2 HFP = 2 HSW = 41,Hpixs:480

[06/08-14:28:28:813] VBP = 2 VFP = 2 VSW = 10,Vpixs:272

[06/08-14:28:28:830]FrameBuff:57e7a000

[06/08-14:28:28:830] LCD initialization Finished.

[06/08-14:28:28:831]********************************************************

[06/08-14:28:28:852]In: serial

[06/08-14:28:28:852]

[06/08-14:28:28:852]Out: lcd

[06/08-14:28:28:855]

[06/08-14:28:28:855]Err: lcd

[06/08-14:28:28:856]

[06/08-14:28:29:206]Net: DM9000

[06/08-14:28:30:225]Hit any key to stop autoboot: 0

[06/08-14:28:30:225]

[06/08-14:28:30:226]NAND read:

[06/08-14:28:30:226]device 0 offset 0x100000, size 0x500000

[06/08-14:28:30:226]

[06/08-14:28:33:470] 5242880 bytes read: OK

[06/08-14:28:33:470]

[06/08-14:28:33:470]## Booting kernel from Legacy Image at 50008000 ...

[06/08-14:28:33:470]

[06/08-14:28:33:472] Image Name: Linux-3.14.4

[06/08-14:28:33:486]

[06/08-14:28:33:487] Image Type: ARM Linux Kernel Image (uncompressed)

[06/08-14:28:33:506]

[06/08-14:28:33:508] Data Size: 1638624 Bytes = 1.6 MB

[06/08-14:28:33:522]

[06/08-14:28:33:523] Load Address: 50008000

[06/08-14:28:33:540]

[06/08-14:28:33:540] Entry Point: 50008040

[06/08-14:28:33:555]

[06/08-14:28:33:885] Verifying Checksum ... OK

[06/08-14:28:33:901]

[06/08-14:28:33:902] XIP Kernel Image ... OK

[06/08-14:28:33:915]

[06/08-14:28:33:916]OK

[06/08-14:28:33:933]

[06/08-14:28:33:933]Starting kernel ...

[06/08-14:28:33:934]

[06/08-14:28:33:945]

[06/08-14:28:33:959]

[06/08-14:28:33:973]

[06/08-14:28:34:265]Uncompressing Linux... done, booting the kernel.

[06/08-14:28:35:062]Booting Linux on physical CPU 0x0

[06/08-14:28:35:072]Linux version 3.14.4 (simiar@Embedded) (gcc version 4.4.3 (ctng-1.6.1) ) #3 Sun Jun 8 14:27:06 CST 2014

[06/08-14:28:35:076]CPU: ARMv6-compatible processor [410fb766] revision 6 (ARMv7), cr=00c5387d

[06/08-14:28:35:092]CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache

[06/08-14:28:35:092]Machine: OK6410

[06/08-14:28:35:093]Ignoring unrecognised tag 0x54410008

[06/08-14:28:35:097]Memory policy: Data cache writeback

[06/08-14:28:35:097]CPU S3C6410 (id 0x36410101)

[06/08-14:28:35:097]CPU: found DTCM0 8k @ 00000000, not enabled

[06/08-14:28:35:098]CPU: moved DTCM0 8k to fffe8000, enabled

[06/08-14:28:35:106]CPU: found DTCM1 8k @ 00000000, not enabled

[06/08-14:28:35:106]CPU: moved DTCM1 8k to fffea000, enabled

[06/08-14:28:35:107]CPU: found ITCM0 8k @ 00000000, not enabled

[06/08-14:28:35:117]CPU: moved ITCM0 8k to fffe0000, enabled

[06/08-14:28:35:118]CPU: found ITCM1 8k @ 00000000, not enabled

[06/08-14:28:35:118]CPU: moved ITCM1 8k to fffe2000, enabled

[06/08-14:28:35:128]Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024

[06/08-14:28:35:138]Kernel command line: root=/dev/nfs nfsroot=192.168.1.100:/home/simiar/share/myproject/ok6410/filesystem/ok6410_fs ip=192.168.1.50:192.168.1.100:192.168.1.1:255.255.255.0::eth0:off console=ttySAC0,115200

[06/08-14:28:35:151]PID hash table entries: 1024 (order: 0, 4096 bytes)

[06/08-14:28:35:161]Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)

[06/08-14:28:35:162]Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)

[06/08-14:28:35:171]Memory: 256460K/262144K available (2173K kernel code, 178K rwdata, 664K rodata, 118K init, 198K bss, 5684K reserved)

[06/08-14:28:35:173]Virtual kernel memory layout:

[06/08-14:28:35:184] vector : 0xffff0000 - 0xffff1000 ( 4 kB)

[06/08-14:28:35:184] DTCM : 0xfffe8000 - 0xfffec000 ( 16 kB)

[06/08-14:28:35:185] ITCM : 0xfffe0000 - 0xfffe4000 ( 16 kB)

[06/08-14:28:35:197] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)

[06/08-14:28:35:197] vmalloc : 0xd0800000 - 0xff000000 ( 744 MB)

[06/08-14:28:35:206] lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)

[06/08-14:28:35:207] modules : 0xbf000000 - 0xc0000000 ( 16 MB)

[06/08-14:28:35:208] .text : 0xc0008000 - 0xc02cd674 (2838 kB)

[06/08-14:28:35:217] .init : 0xc02ce000 - 0xc02eb99c ( 119 kB)

[06/08-14:28:35:218] .data : 0xc02ec000 - 0xc0318a00 ( 179 kB)

[06/08-14:28:35:228] .bss : 0xc0319000 - 0xc034aac8 ( 199 kB)

[06/08-14:28:35:229]SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1

[06/08-14:28:35:229]NR_IRQS:246

[06/08-14:28:35:239]S3C6410 clocks: apll = 533000000, mpll = 533000000

[06/08-14:28:35:240] epll = 24000000, arm_clk = 533000000

[06/08-14:28:35:240]VIC @f6000000: id 0x00041192, vendor 0x41

[06/08-14:28:35:250]VIC @f6010000: id 0x00041192, vendor 0x41

[06/08-14:28:35:251]sched_clock: 32 bits at 33MHz, resolution 30ns, wraps every 128929599457ns

[06/08-14:28:35:251]Console: colour dummy device 80x30

[06/08-14:28:35:261]Calibrating delay loop... 531.66 BogoMIPS (lpj=2658304)

[06/08-14:28:35:262]pid_max: default: 32768 minimum: 301

[06/08-14:28:35:273]Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)

[06/08-14:28:35:273]Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)

[06/08-14:28:35:274]CPU: Testing write buffer coherency: ok

[06/08-14:28:35:283]Setting up static identity map for 0x50214fa0 - 0x50214ffc

[06/08-14:28:35:295]VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5

[06/08-14:28:35:296]DMA: preallocated 256 KiB pool for atomic coherent allocations

[06/08-14:28:35:296]OK6410: Option string ok6410=0

[06/08-14:28:35:308]OK6410: selected LCD display is 480x272

[06/08-14:28:35:308]S3C6410: Initialising architecture

[06/08-14:28:35:309]bio: create slab at 0

[06/08-14:28:35:317]pl08xdmac dma-pl080s.0: initialized 8 virtual memcpy channels

[06/08-14:28:35:318]pl08xdmac dma-pl080s.0: initialized 16 virtual slave channels

[06/08-14:28:35:328]pl08xdmac dma-pl080s.0: DMA: PL080s rev1 at 0x75000000 irq 73

[06/08-14:28:35:329]pl08xdmac dma-pl080s.1: initialized 8 virtual memcpy channels

[06/08-14:28:35:340]pl08xdmac dma-pl080s.1: initialized 12 virtual slave channels

[06/08-14:28:35:340]pl08xdmac dma-pl080s.1: DMA: PL080s rev1 at 0x75100000 irq 74

[06/08-14:28:35:341]usbcore: registered new interface driver usbfs

[06/08-14:28:35:350]usbcore: registered new interface driver hub

[06/08-14:28:35:351]usbcore: registered new device driver usb

[06/08-14:28:35:362]Switched to clocksource samsung_clocksource_timer

[06/08-14:28:35:362]futex hash table entries: 256 (order: 0, 7168 bytes)

[06/08-14:28:35:363]io scheduler noop registered

[06/08-14:28:35:373]io scheduler deadline registered

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Reference address：S3C6410 Embedded Application Platform Construction (V) - Linux-3.14.4 Ported to OK6410-(Nand Partition Problem)

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