Hello, L4 hackers.
I have questions about booting "Hello world" on myboard. Please help me.
I'm try to boot "Hello world + L4re + fiasco" on my board of which name is 'freescale i.MX6 Quad SABRE SD'(Cortex-A9,ARMv7). I built L4re and Fiasco. So, i got L4 build tree and fiasco image. Although i have built uimage file by "make uimage" and and i try to "make qemu", i was not able to run "hello world". (For reference,i have run original linux of which name is Linux/ARM, OS Kernel ,Linux-3.0.35-2508-g54750ff on my board(Freescale imx6q_sabre_sd))
<1. Result of the try booting on my board after "make uimage"> ======================================================================== MMC read: dev # 2, block # 2048, count 8192 ... 8192 blocks read: OK ## Booting kernel from Legacy Image at 10800000 ... Image Name: L4 Image #3 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 1224704 Bytes = 1.2 MB Load Address: 11000000 Entry Point: 11000000 Verifying Checksum ... OK Loading Kernel Image ... OK OK
Starting kernel ... ========================================================================
<1-1. My Question > Why stop at "Starting kernel..." ? Is wrong my environment variables in u-boot ? (If it is the problem, how fix u-boot environment variables from '1-4'? ) Or, my toolchains(linaro gcc 4.6 (64bit) ) are a wrong choice ?
<1-2. Fiasco : What i configured for myboard > ======================================================================== Target configuration ---> Architecture (ARM processor family) Platform (Freescale i.MX) Freescale i.MX (i.MX6) CPU (ARM Cortex-A9 CPU)
[ ] Enable alignment check (NEW) [ ]Execution Model (Standard mode) [ ] Enable the deprecated 'swp' instruction (NEW) [*] Enable L2 Cache [ ] Enable FPU co-processor [ ] Enable CPU errata workarounds (NEW)
Kernel options ---> [*] Enable multi processor support (4) Maximal supported number of CPUs (NEW) [*] Fine-grained CPU time Scheduler (Fixed priority scheduler) ========================================================================
<1-3. L4 re : What i configured for myboard> ======================================================================== Target Architecture 3. ARM architecture (BUILD_ARCH_arm) (NEW)
CPU variant 9. ARMv7A type CPU (CPU_ARM_ARMV7A) (NEW)
Platform Selection 7. Freescale i.MX6 (PLATFORM_TYPE_imx6) (NEW)
Automatically determine internal gcc preprocessor names (INT_CPP_NAME_SWITCH) [Y/n] (NEW) Y Automatically determine internal ld names (INT_LD_NAME_SWITCH) [Y/n] (NEW) Y Strip binaries on install (BID_STRIP_PROGS) [N/y/?] (NEW) N GCC: Omit Frame-pointers (BID_GCC_OMIT_FP) [N/y/?] (NEW) N Build doc directories (BID_BUILD_DOC) [N/y/?] (NEW) N Enable RELEASE flag (RELEASE_MODE) [N/y/?] (NEW) N
========================================================================
<1-4. U-boot : what i set environment variable for my board> (u-boot-mx6q-sabresd.bin is supported from freescale home page.) ======================================================================== MX6Q SABRESD U-Boot > setenv loadaddr 0x10800000 MX6Q SABRESD U-Boot > setenv bootargs_base 'setenv bootargs console=ttymxc0,115200' MX6Q SABRESD U-Boot > setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk1p1 rootwait rw video=mxcfb1:dev=ldb,LDB-XGA,if=RGB666 video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24' MX6Q SABRESD U-Boot > setenv bootcmd_mmc 'run bootargs_base bootargs_mmc;mmc dev 2;mmc read ${loadaddr} 0x800 0x2000;bootm' MX6Q SABRESD U-Boot > setenv bootcmd 'run bootcmd_mmc' MX6Q SABRESD U-Boot > saveenv Saving Environment to MMC... Writing to MMC(2)... done MX6Q SABRESD U-Boot > run bootcmd ========================================================================
<2. Result of the second try "make qemu"> ======================================================================== root@taeung-MS-7798:/path/to/obj2/tudos# make qemu E=hello-cfg MODULE_SEARCH_PATH=/path/to/obj2/fiasco/ make[1]: Entering directory `/home/taeung/Hello_test_l4/src/l4' ... Generating bootstrap.ld Building entry "hello-cfg". Merging image /path/to/obj2/fiasco//fiasco to mod00 [360kB] Merging image /path/to/obj2/tudos/bin/arm_armv7a/l4f/sigma0 to mod01 [351kB] Merging image /path/to/obj2/tudos/bin/arm_armv7a/l4f/moe to mod02 [2365kB] Merging image /path/to/obj2/tudos/bin/arm_armv7a/l4f/l4re to mod03 [1228kB] Merging image /path/to/obj2/tudos/bin/arm_armv7a/l4f/ned to mod04 [2387kB] Merging image /path/to/obj2/tudos/bin/arm_armv7a/l4f/hello.cfg to mod05 [1kB] Merging image /path/to/obj2/tudos/bin/arm_armv7a/l4f/hello to mod06 [896kB] ... Compiling exec.o ... Compiling module.o ... Compiling ARCH-arm/crt0.o ... Compiling region.o ... Compiling startup.o ... Compiling init_kip_v2.o ... Compiling init_kip_v4.o ... Compiling libc_support+.o ... Compiling patch.o ... Compiling koptions.o ... Compiling platform/imx.o ... Compiling loader_mbi.o ... Compiling ARCH-arm/reboot.o ==> Linking bootstrap.elf ==> Post-processing bootstrap.elf ==> "bootstrap.elf" built ==> Installing bootstrap.elf in image directory ==> Installing bootstrap_hello-cfg in image directory ==> Installing bootstrap_hello-cfg.elf in image directory Image size(s) in bytes: bootstrap_hello-cfg.elf: 1257856 Start address: 0x11000000 --> Build-Nr: 4 ==> Installing bootstrap.elf to local build-tree ==> Installing bootstrap_hello-cfg to local build-tree ==> Installing bootstrap_hello-cfg.elf to local build-tree QEmu-cmd: qemu-system-arm -kernel /path/to/obj2/tudos/images/bootstrap.elf qemu: fatal: Trying to execute code outside RAM or ROM at 0x11000000
R00=00000000 R01=00000000 R02=00000000 R03=00000000 R04=00000000 R05=00000000 R06=00000000 R07=00000000 R08=00000000 R09=00000000 R10=00000000 R11=00000000 R12=00000000 R13=00000000 R14=00000000 R15=11000000 PSR=400001d3 -Z-- A svc32 s00=00000000 s01=00000000 d00=0000000000000000 s02=00000000 s03=00000000 d01=0000000000000000 s04=00000000 s05=00000000 d02=0000000000000000 s06=00000000 s07=00000000 d03=0000000000000000 s08=00000000 s09=00000000 d04=0000000000000000 s10=00000000 s11=00000000 d05=0000000000000000 s12=00000000 s13=00000000 d06=0000000000000000 s14=00000000 s15=00000000 d07=0000000000000000 s16=00000000 s17=00000000 d08=0000000000000000 s18=00000000 s19=00000000 d09=0000000000000000 s20=00000000 s21=00000000 d10=0000000000000000 s22=00000000 s23=00000000 d11=0000000000000000 s24=00000000 s25=00000000 d12=0000000000000000 s26=00000000 s27=00000000 d13=0000000000000000 s28=00000000 s29=00000000 d14=0000000000000000 s30=00000000 s31=00000000 d15=0000000000000000 FPSCR: 00000000 bash: line 3: 5158 Aborted (core dumped) $qemu -kernel /path/to/obj2/tudos/images/bootstrap.elf make[1]: *** [qemu] Error 134 make[1]: Leaving directory `/home/taeung/Hello_test_l4/src/l4' make: *** [qemu] Error 2 ========================================================================
<2-1. My Question >
Qemu support cpu such as cortex-A9 and ARMv7. But it not support mahine information for Freescale i.MX6 quad sabre sd.
Because this is the reason, Can't boot "Helloworld + L4re+Fiasco" by qemu ? Or Is there other reason ?
Thank you, if you help whatever.
/Regards,
Taeung Song | Student of Computer Engineering Hansung University./