Re: [U-Boot] Booting with rootfs on ramdisk
Hi Peter Thanks for your help, I did as you suggested and it seems to go further, however, it couldn't successfully mount the rootfs, and come back as No filesystem could mount root, tried: ext2 cramfs msdos vfat Is there anything I should compile in the linux kernel, I've make sure, ticks in ltib for followings: 1. Second extended fs support 2. Kernel automounter version 4 support (..) Any pointers much appreciated, and thanks in advance. Ayewin Full boot output. === uboot run bootcmd HW MAC address: A0:70:64:6B:58:C7 Link Active Port 0 Speed 100Mbits, FullDuplex. TFTP from server 192.168.2.4; our IP address is 192.168.2.6 Filename 'uImage'. Load address: 0x8000 Loading: # done Bytes transferred = 1416776 (159e48 hex) HW MAC address: A0:70:64:6B:58:C7 Link Active Port 0 Speed 100Mbits, FullDuplex. TFTP from server 192.168.2.4; our IP address is 192.168.2.6 Filename 'rootfs.ext2.gz.uboot'. Load address: 0x8100 Loading: # # # # # # ## done Bytes transferred = 5745973 (57ad35 hex) ## Booting kernel from Legacy Image at 8000 ... Image Name: Linux-2.6.27.8 Image Type: ARM Linux Kernel Image (uncompressed) Data Size:1416712 Bytes = 1.4 MB Load Address: 80008000 Entry Point: 80008000 Verifying Checksum ... OK ## Loading init Ramdisk from Legacy Image at 8100 ... Image Name: uboot ext2 ramdisk rootfs Image Type: ARM Linux RAMDisk Image (gzip compressed) Data Size:5745909 Bytes = 5.5 MB Load Address: Entry Point: Verifying Checksum ... OK Loading Kernel Image ... OK OK Starting kernel ... Uncompressing Linux... done, booting the kernel. �Linux version 2.6.27.8 (engin...@maymyo) (gcc version 4.1.2) #58 PREEMPT Thu May 20 09:37:03 BST 2010 CPU: ARM926EJ-S [41069264] revision 4 (ARMv5TEJ), cr=00053177 Machine: Padauk Systems PTP16P Board Memory policy: ECC disabled, Data cache writeback CPU0: D VIVT write-back cache CPU0: I cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets CPU0: D cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets Built 1 zonelists in Zone order, mobility grouping off. Total pages: 4064 Kernel command line: mem=16M console=ttyS0,115200n8 root=/dev/ram rw ramdisk_size=16384 ip=dhcp ethaddr=a0:70:64:6b:58:c7 PID hash table entries: 64 (order: 6, 256 bytes) Console: colour dummy device 80x30 Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 16MB = 16MB total Memory: 13188KB available (2696K code, 199K data, 104K init) Calibrating delay loop... 84.73 BogoMIPS (lpj=169472) Mount-cache hash table entries: 512 CPU: Testing write buffer coherency: ok net_namespace: 288 bytes NET: Registered protocol family 16 LPC32XX DMA driver LPC32XX unique ID: 0006291c75701b6e58dc8cb71086f480 SCSI subsystem initialized NET: Registered protocol family 2 IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 512 (order: 0, 4096 bytes) TCP bind hash table entries: 512 (order: -1, 2048 bytes) TCP: Hash tables configured (established 512 bind 512) TCP reno registered NET: Registered protocol family 1 NetWinder Floating Point Emulator V0.97 (double precision) JFFS2 version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. msgmni has been set to 25 io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered (default) Serial: 8250/16550 driver4 ports, IRQ sharing disabled serial8250.0: ttyS0 at MMIO 0x4009 (irq = 9) is a 16550A console [ttyS0] enabled brd: module loaded loop: module loaded LPC32XX_mii_bus: probed eth0: LPC32XX mac at 0x3106 irq 29 eth0: attached PHY driver [Generic PHY] (mii_bus:phy_addr=0:00, irq=-1) Driver 'sd' needs updating - please use bus_type methods NAND device: Manufacturer ID: 0xad, Chip ID: 0xda (Hynix NAND 256MiB 3,3V 8-bit) Scanning device for bad blocks Creating 7 MTD partitions on lpc32xx_nand: 0x-0x0004 : ptp16p-kickstart 0x0004-0x000c : ptp16p-s1l 0x000c-0x0022 : ptp16p-wlv 0x0022-0x0026 : ptp16p-bparams 0x0026-0x0036 : ptp16p-uboot 0x0040-0x0200 : ptp16p-kernel 0x0200-0x1000 : ptp16p-rootfs mice: PS/2 mouse device common for all mice rtc-lpc32xx rtc-lpc32xx: rtc core: registered rtc-lpc32xx as rtc0 i2c /dev entries driver PNX4008-WDT:
[U-Boot] Booting with rootfs on ramdisk
Hi list I need help and pointers, to get rootfs on ramdisk. I've build kernel and ram image and when the kernel try to boot, the kernel always want to load rootfs from NFS. Please see attached output. And I'm not sure how kernel know here to find ramdisk etc.. Please help with the following: 1. A list of kernel configuration options need to set, to be able to use ramdisk as rootfs. 2. Definative u-boot command line to let kernel know where the ramdisk image is and to use it as rootfs. 3. How to disable kernel from trying to mount rootfs via NFS. Thanks so much in advance. Ayewin uboot run bootcmd HW MAC address: A0:70:64:6B:58:C7 Link Active Port 0 Speed 100Mbits, FullDuplex. TFTP from server 192.168.2.4; our IP address is 192.168.2.6 Filename 'uImage'. Load address: 0x8000 Loading: # # done Bytes transferred = 1426684 (15c4fc hex) HW MAC address: A0:70:64:6B:58:C7 Link Active Port 0 Speed 100Mbits, FullDuplex. TFTP from server 192.168.2.4; our IP address is 192.168.2.6 Filename 'rootfs.ext2.gz.uboot'. Load address: 0x8100 Loading: # # # # # # ## done Bytes transferred = 5745981 (57ad3d hex) ## Booting kernel from Legacy Image at 8000 ... Image Name: Linux-2.6.27.8 Image Type: ARM Linux Kernel Image (uncompressed) Data Size:1426620 Bytes = 1.4 MB Load Address: 80008000 Entry Point: 80008000 Verifying Checksum ... OK ## Loading init Ramdisk from Legacy Image at 8100 ... Image Name: uboot ext2 ramdisk rootfs Image Type: ARM Linux RAMDisk Image (gzip compressed) Data Size:5745917 Bytes = 5.5 MB Load Address: Entry Point: Verifying Checksum ... OK Loading Kernel Image ... OK OK Starting kernel ... Uncompressing Linux done, booting the kernel. �Linux version 2.6.27.8 (engin...@maymyo) (gcc version 4.1.2) #57 PREEMPT Wed May 19 18:31:27 BST 2010 CPU: ARM926EJ-S [41069264] revision 4 (ARMv5TEJ), cr=00053177 Machine: Padauk Systems PTP16P Board Memory policy: ECC disabled, Data cache writeback CPU0: D VIVT write-back cache CPU0: I cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets CPU0: D cache: 32768 bytes, associativity 4, 32 byte lines, 256 sets Built 1 zonelists in Zone order, mobility grouping off. Total pages: 4064 Kernel command line: mem=16M console=ttyS0,115200n8 root=/dev/ram0 rw ip=dhcp ethaddr=a0:70:64:6b:58:c7 PID hash table entries: 64 (order: 6, 256 bytes) Console: colour dummy device 80x30 Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 16MB = 16MB total Memory: 13172KB available (2724K code, 198K data, 92K init) Calibrating delay loop... 84.73 BogoMIPS (lpj=169472) Mount-cache hash table entries: 512 CPU: Testing write buffer coherency: ok net_namespace: 288 bytes NET: Registered protocol family 16 LPC32XX DMA driver LPC32XX unique ID: 0006291c75701b6e58dc8cb71086f480 SCSI subsystem initialized NET: Registered protocol family 2 IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 512 (order: 0, 4096 bytes) TCP bind hash table entries: 512 (order: -1, 2048 bytes) TCP: Hash tables configured (established 512 bind 512) TCP reno registered NET: Registered protocol family 1 NetWinder Floating Point Emulator V0.97 (double precision) JFFS2 version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. msgmni has been set to 25 io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered (default) Serial: 8250/16550 driver4 ports, IRQ sharing disabled serial8250.0: ttyS0 at MMIO 0x4009 (irq = 9) is a 16550A console [ttyS0] enabled loop: module loaded LPC32XX_mii_bus: probed eth0: LPC32XX mac at 0x3106 irq 29 eth0: attached PHY driver [Generic PHY] (mii_bus:phy_addr=0:00, irq=-1) Driver 'sd' needs updating - please use bus_type methods NAND device: Manufacturer ID: 0xad, Chip ID: 0xda (Hynix NAND 256MiB 3,3V 8-bit) Scanning device for bad blocks Creating 7 MTD partitions on lpc32xx_nand: 0x-0x0004 : ptp16p-kickstart 0x0004-0x000c : ptp16p-s1l 0x000c-0x0022 : ptp16p-wlv 0x0022-0x0026 : ptp16p-bparams 0x0026-0x0036 : ptp16p-uboot 0x0040-0x0200 : ptp16p-kernel 0x0200-0x1000 : ptp16p-rootfs mice: PS/2 mouse device common for all mice rtc-lpc32xx rtc-lpc32xx: rtc core:
