TE2410移植linux-2.6.14及调试过程总结(1)

_NFCONF_TWRPH1(twrph1-1);

}

pr_debug(PFX "NF_CONF is 0x%lx\n", cfg);

writel(cfg, info->regs + S3C2410_NFCONF);

return 0;

}

我加了一点代码将相关参数打印出来:

plat->tacls:0

plat->twrph0:3

plat->twrph1:0

tacls:1

twrph0:1

twrph1:1

clkrate:100000000

真是搞不懂plat->tacls, plat->twrph0, plat->twrph1的值和前面初始化的值是一样的,但是经过s3c2410_nand_calc_rate函数处理后就出问题了,正确的输出值应该是

tacls:1twrph0:4twrph1:1

算了,对tacls,twrph0,twrph1三个变量强制性赋值

tacls=1;

twrph0 =2;

twrph1 =1;

修改后NAND Flash可以正常工作了,启动信息如下:

Linux version 2.6.14 (root@localhost.localdomain) (gcc version 3.4.1) #7 Mon Jul 14 09:34:58 EDT 2008

CPU: ARM920Tid(wb) [41129200] revision 0 (ARMv4T)

Machine: SMDK2410

Memory policy: ECC disabled, Data cache writeback

CPU S3C2410A (id 0x32410002)

S3C2410: core 200.000 MHz, memory 100.000 MHz, peripheral 50.000 MHz

S3C2410 Clocks, (c) 2004 Simtec Electronics

CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on

CPU0: D VIVT write-back cache

CPU0: I cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets

CPU0: D cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets

Built 1 zonelists

Kernel command line: noinitrd root=/dev/mtdblock3 init=/linuxrc console=ttySAC0,115200 mem=64M

irq: clearing subpending status 00000003

irq: clearing subpending status 00000002

PID hash table entries: 512 (order: 9, 8192 bytes)

timer tcon=00500000, tcnt a2c1, tcfg 00000200,00000000, usec 00001eb8

Console: colour dummy device 80x30

Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)

Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)

Memory: 64MB = 64MB total

Memory: 62592KB available (1708K code, 381K data, 92K init)

Mount-cache hash table entries: 512

CPU: Testing write buffer coherency: ok

softlockup thread 0 started up.

NET: Registered protocol family 16

S3C2410: Initialising architecture

usbcore: registered new driver usbfs

usbcore: registered new driver hub

S3C2410 DMA Driver, (c) 2003-2004 Simtec Electronics

DMA channel 0 at c4800000, irq 33

DMA channel 1 at c4800040, irq 34

DMA channel 2 at c4800080, irq 35

DMA channel 3 at c48000c0, irq 36

NetWinder Floating Point Emulator V0.97 (double precision)

Console: switching to colour frame buffer device 80x25

fb0: Virtual frame buffer device, using 1024K of video memory

S3C2410 RTC, (c) 2004 Simtec Electronics

s3c2410_serial0 at MMIO 0x50000000 (irq = 70) is a S3C2410

s3c2410_serial1 at MMIO 0x50004000 (irq = 73) is a S3C2410

s3c2410_serial2 at MMIO 0x50008000 (irq = 76) is a S3C2410

io scheduler noop registered

io scheduler anticipatory registered

io scheduler deadline registered

io scheduler cfq registered

RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize

S3C24XX NAND Driver, (c) 2004 Simtec Electronics

s3c2410-nand: mapped registers at c4980000

s3c2410-nand: timing: Tacls 10ns, Twrph0 20ns, Twrph1 10ns

s3c2410-nand: NF_CONF is 0x8010

NAND device: Manufacturer ID: 0xec, Chip ID: 0x76 (Samsung NAND 64MiB 3,3V 8-bit)

NAND_ECC_NONE selected by board driver. This is not recommended !!

Scanning device for bad blocks

Creating 5 MTD partitions on "NAND 64MiB 3,3V 8-bit":

0x00000000-0x00020000 : "bootloader"

0x00020000-0x00030000 : "param"

0x00030000-0x001f0000 : "kernel"

0x00200000-0x02200000 : "rootfs"

0x02200000-0x04000000 : "user"

usbmon: debugfs is not available

mice: PS/2 mouse device common for all mice

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 4096 (order: 2, 16384 bytes)

TCP bind hash table entries: 4096 (order: 2, 16384 bytes)

TCP: Hash tables configured (established 4096 bind 4096)

TCP reno registered

TCP bic registered

NE