Hi All:
I am trying to make use of verified Uboot on ARMv8 FVP platform. I setup environment followed the below procedure, but failed after entered Linux kernel. There was nothing prompt information except "Starting kernel". Operation procedure as bellow:
1) Add CONFIG_OF_CONTROL/CONFIG_RSA/CONFIG_FIT_SIGNATURE/CONFIG_FIT/CONFIG_OF_SEPARATE to vexpress_aemv8a.h
2) Generate RSA keys use openssl tool
3) Create a kernel.its file that used to build the FIT image
/ {
description = "Chrome OS kernel image with one or more FDT blobs";
#address-cells = <1>;
images {
kernel@1 {
description = "kernel image";
data = /incbin/("Image.gz");
type = "kernel_noload";
arch = "arm64";
os = "linux";
compression = "gzip";
load = <0x89000000>;
entry = <0x89000000>;
kernel-version = <1>;
signature@1 {
algo = "sha1,rsa2048";
key-name-hint = "dev";
};
};
fdt@1 {
description = "fdb blob";
data = /incbin/("atf_psci.dtb");
type = "flat_dt";
arch = "arm64";
compression = "none";
fdt-version = <1>;
signature@1 {
algo = "sha1,rsa2048";
key-name-hint = "dev";
};
};
ramsidk@1 {
description="ramdisk";
data = /incbin/("filesystem.cpio.gz");
type = "ramdisk";
arch = "arm64";
os = "linux";
compression = "gzip";
load = <0xaa000000>;
entry = <0xaa000000>;
signature@1 {
algo = "sha1,rsa2048";
key-name-hint = "dev";
};
};
};
configurations {
default = "conf@1";
conf@1 {
kernel = "kernel@1";
fdt = "fdt@1";
ramdisk = "ramdisk@1";
};
};
};
4) Get the Image.gz and atf_psci.dtb and ramdisk file(These images and device tree blob files are verified before with old uImage format, and they are ok)
5) Build Uboot enanbled FDT:
# make vexpress_aemv8a_config
# make CROSS_COMPILE=<> DEVICE_TREE=atf_psci all
Before compile, CONFIG_OF_SEPARATE has been added to vexpress_aemv8a.h; Also atf_psci.dts file was added to arch/arm/dts directory.
After build , u-boot-dtb.bin file was generated. 6) Build and signed FIT image as:
# cp atf_psco.dtb atf_psci_public.dtb
# mkimage -D "-I dts -O dtb -p 2000" -F -f kernel.its -k "key" -K atf_psci_public.dtb -r image.fit 7) Build FDT uboot with public key # make CROSS_COMPILE=<> EXT_DTB=/WORK/atf_psci_public.dtb And public key attached u-boot-dtb.bin file was generated. 8) Load FIT image image.fit to address 0xc3000004 on Foundation
The images are verified successful, however system hangs after enter Linux. I debugged Linux kernel with console output, and found that before function start_kernel be called it is normal. (After __turn_mmu_on function on kernel, the MMU was enabled, and my console output is invalid for not been mapped. So my debug was stopped before start_kernel. But I believe there is no obstacle between __turn_mmu_on function and start_kernel function). And also, I checked the input parameter fdt_blob for kernel, the address seems normal.
This problem has confused me several days, I will appreciated if you can give me susggestions. Logs are bellow. =====================Logs are bellow=================== Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. Booting trusted firmware boot loader stage 1 Built : 10:44:52, Jul 29 2014 Booting trusted firmware boot loader stage 2 BL2 Built : 10:44:54, Jul 29 2014 Booting trusted firmware boot loader stage 3 BL31 Built : 10:44:56, Jul 29 2014 BL33 image pc = 0x88000000
U-Boot 2014.07-rc4 (Jul 29 2014 - 10:43:19) vexpress_aemv8a
U-Boot code: 88000000 -> 88039BF0 BSS: -> 8806FB00 monitor len: 0006FB00 ramsize: 78000000 Top of RAM usable for U-Boot at: 100000000 Reserving 446k for U-Boot at: fff90000 Reserving 136k for malloc() at: fff6e000 Reserving 56 Bytes for Board Info at: fff6dfc8 Reserving 264 Bytes for Global Data at: fff6dec0 Reserving 11936 Bytes for FDT at: fff6b020 New Stack Pointer is: fff6b020 RAM Configuration: Bank #0: 88000000 1.9 GiB relocation Offset is: 77f90000 monitor flash len: 00039BF0 Now running in RAM - U-Boot at: fff90000 fdtdec_get_config_int: load-environment Using default environment
Destroy Hash Table: 00000000fffc3b00 table = 0000000000000000 Create Hash Table: N=91 INSERT: table 00000000fffc3b00, filled 1/97 rv 00000000fff6e220 ==> name="bootargs" value="console=ttyAMA0 root=/dev/ram0" INSERT: table 00000000fffc3b00, filled 2/97 rv 00000000fff6e6f8 ==> name="bootcmd" value="bootm $kernel_addr $initrd_addr:$initrd_size $fdt_addr" INSERT: table 00000000fffc3b00, filled 3/97 rv 00000000fff6e338 ==> name="baudrate" value="115200" INSERT: table 00000000fffc3b00, filled 4/97 rv 00000000fff6ea90 ==> name="kernel_addr" value="0x200000" INSERT: table 00000000fffc3b00, filled 5/97 rv 00000000fff6e6d0 ==> name="initrd_addr" value="0xa00000" INSERT: table 00000000fffc3b00, filled 6/97 rv 00000000fff6e1d0 ==> name="initrd_size" value="0x2000000" INSERT: table 00000000fffc3b00, filled 7/97 rv 00000000fff6e1f8 ==> name="fdt_addr" value="0x100000" INSERT: table 00000000fffc3b00, filled 8/97 rv 00000000fff6ec70 ==> name="fdt_high" value="0xa0000000" INSERT: free(data = 00000000fff6e010) INSERT: done In: serial Out: serial Err: serial Initial value for argc=3 Final value for argc=3 Initial value for argc=3 Final value for argc=3 Initial value for argc=3 Final value for argc=3 Net: Initial value for argc=3 Final value for argc=3 SMC91111-0 Warning: failed to set MAC address
Warning: Your board does not use generic board. Please read doc/README.generic-board and take action. Boards not upgraded by the late 2014 may break or be removed. fdtdec_get_config_int: bootdelay ### main_loop entered: bootdelay=-1
fdtdec_get_config_int: kernel-offset fdtdec_get_config_int: rootdisk-offset fdtdec_get_config_string: bootcmd fdtdec_get_config_int: bootsecure ### main_loop: bootcmd="bootm $kernel_addr $initrd_addr:$initrd_size $fdt_addr" VExpress64# printenv bootargs bootargs=console=ttyAMA0 root=/dev/ram0 VExpress64# bootm 0xc3000004 ## Current stack ends at 0xfff6ac80 * kernel: cmdline image address = 0xc3000004 ## Loading kernel from FIT Image at c3000004 ... No configuration specified, trying default... Found default configuration: 'conf@1' Using 'conf@1' configuration Verifying Hash Integrity ... fit_config_check_sig: fdt=00000000fff6b020, conf='signature@1', sig='key-dev' sha1,rsa2048:devHash nodes (6): '/' '/configurations/conf@1' '/images/fdt@1' '/images/fdt@1/hash@1' '/images/kernel@1' '/images/kernel@1/hash@1' Hash regions: Offset Size 38 a0 2b241c ec 2b3fa8 94 1859a7a8 18 1859a7d4 60 1859aa48 14 1859aa5c e0 fdtdec_get_int: rsa,num-bits: 0x800 (2048) fdtdec_get_int: rsa,n0-inverse: 0x259912c1 (630788801) key length 64 Checksum algorithm: sha1+ OK Trying 'kernel@1' kernel subimage Description: linux kernel image Type: Kernel Image Compression: gzip compressed Data Start: 0xc30000e8 Data Size: 2827062 Bytes = 2.7 MiB Architecture: AArch64 OS: Linux Load Address: 0x89000000 Entry Point: 0x89000000 Hash node: 'hash@1' Hash algo: sha1 Hash value: 402de3d5fd74c0de7dc997097a3b45474a659cde Hash len: 20 Verifying Hash Integrity ... sha1+ OK kernel data at 0xc30000e8, len = 0x002b2336 (2827062) * ramdisk: using config 'conf@1' from image at 0xc3000004 ## Loading ramdisk from FIT Image at c3000004 ... Using 'conf@1' configuration Trying 'ramdisk@1' ramdisk subimage Description: RAMDISK Image Type: RAMDisk Image Compression: gzip compressed Data Start: 0xc32b4078 Data Size: 405694073 Bytes = 386.9 MiB Architecture: AArch64 OS: Linux Load Address: 0xaa000000 Entry Point: 0xaa000000 Hash node: 'hash@1' Hash algo: sha1 Hash value: cfc58f934035c7bf52109283be7cdbdb8d6c1640 Hash len: 20 Verifying Hash Integrity ... sha1+ OK ramdisk start = 0xc32b4078, ramdisk end = 0xdb59a6f1 * fdt: using config 'conf@1' from image at 0xc3000004 ## Checking for 'FDT'/'FDT Image' at c3000004 ## Loading fdt from FIT Image at c3000004 ... Using 'conf@1' configuration Trying 'fdt@1' fdt subimage Description: FDT blob Type: Flat Device Tree Compression: uncompressed Data Start: 0xc32b2518 Data Size: 6802 Bytes = 6.6 KiB Architecture: AArch64 Hash node: 'hash@1' Hash algo: sha1 Hash value: 10550f02e9ebd95db9dc257625dc42b7bb2295c9 Hash len: 20 Verifying Hash Integrity ... sha1+ OK Can't get 'load' property from FIT 0xc3000004, node: offset 2827436, name fdt@1 (FDT_ERR_NOTFOUND) Booting using the fdt blob at 0xc32b2518 of_flat_tree at 0xc32b2518 size 0x00001a92 Initial value for argc=3 Final value for argc=3 Uncompressing Kernel Image ... OK kernel loaded at 0x89000000, end = 0x895a0338 using----------------: FDT fdt address is 00000000c32b2518 boot_fdt_add_mem_rsv fdt_blob = 00000000c32b2518 fdt_check_header fdt_num_mem_rsv fdt_rsv_mem_addr = 00000000c32b2540 total = 1 fdt_get_mem_rsv index_0 addr = 00000000c32b2540 reserving fdt memory region: addr=80000000 size=10000 boot_get_cmdline boot_ramdisk_high ## initrd_high = 0xffffffffffffffff, copy_to_ram = 1 Loading Ramdisk from c32b4078 to e7c83000, end fff69679 ... OK ramdisk load start = 0xe7c83000, ramdisk load end = 0xfff69679 boot_relocate_fdt Loading Device Tree to 000000009fe00000, end 000000009fe04a91 ... fdt_rsv_mem_addr = 00000000c32b2540 OK Initial value for argc=3 Final value for argc=3 image_setup_libfdt No ethernet MAC Address defined ## Transferring control to Linux (at address 89000000)... ## Fdt: 9fe00000
Starting kernel ...
"345678P9@AB <-----(PS: These information are added by me in Linux kernel)