[yocto] Unable to get serial console login prompt - PowerPC 440 Virtex 5 processor

[Elvis Dowson]

Hi Khem,

On Aug 19, 2012, at 10:36 AM, Elvis Dowson wrote:

> What should I do to enable multilib in gcc-4.7? 
> 
> I think at the moment, in gcc-configure-common.inc, it is disabled.
> 
> If I were to re-enable it as follows, based on what I've diff'd from the Denx ELDK repo, what how does the GCCMULTILIB variable evaluate?
> 
> -GCCMULTILIB = "--disable-multilib"
> +GCCMULTILIB = '${@base_contains("MULTILIB_ARCH_LIST", "${TARGET_ARCH}", "--enable-multilib", "--disable-multilib",d)}'
> 
> I think multilib has to be enabled, no? 
> 
> In file gcc/config/rs6000/t-ppcos.c
> 
> # Multilibs for a powerpc hosted ELF target (linux, SVR4)
> 
> MULTILIB_OPTIONS	= msoft-float
> MULTILIB_DIRNAMES	= nof
> MULTILIB_EXTRA_OPTS	= fPIC mstrict-align
> MULTILIB_EXCEPTIONS	= 
> 
> MULTILIB_MATCHES	= ${MULTILIB_MATCHES_FLOAT}
> 
> 
> Here is the full patch, which I am assuming enables multilib, and get libgcc to generate the nof libraries to the target:
> 
> diff --git a/meta/recipes-devtools/gcc/gcc-configure-common.inc b/meta/recipes-devtools/gcc/gcc-configure-common.inc
> index 908ad3e..a3fa294 100644
> --- a/meta/recipes-devtools/gcc/gcc-configure-common.inc
> +++ b/meta/recipes-devtools/gcc/gcc-configure-common.inc
> @@ -25,7 +25,7 @@ EXTRA_OECONF_PATHS ?= ""
>  EXTRA_OECONF_INITIAL ?= ""
>  EXTRA_OECONF_INTERMEDIATE ?= ""
>  
> -GCCMULTILIB = "--disable-multilib"
> +GCCMULTILIB = '${@base_contains("MULTILIB_ARCH_LIST", "${TARGET_ARCH}", "--enable-multilib", "--disable-multilib",d)}'
>  
>  EXTRA_OECONF = "${@['--enable-clocale=generic', ''][d.getVar('USE_NLS', True) != 'no']} \
>                  --with-gnu-ld \
> diff --git a/meta/recipes-devtools/gcc/libgcc_4.7.bb b/meta/recipes-devtools/gcc/libgcc_4.7.bb
> index c796253..aac81f6 100644
> --- a/meta/recipes-devtools/gcc/libgcc_4.7.bb
> +++ b/meta/recipes-devtools/gcc/libgcc_4.7.bb
> @@ -18,7 +18,9 @@ FILES_${PN} = "${base_libdir}/libgcc*.so.*"
>  FILES_${PN}-dev = " \
>    ${base_libdir}/libgcc*.so \
>    ${libdir}/${TARGET_SYS}/${BINV}/*crt* \
> -  ${libdir}/${TARGET_SYS}/${BINV}/libgcc*"
> +  ${libdir}/${TARGET_SYS}/${BINV}/libgcc* \
> +  ${libdir}/${TARGET_SYS}/${BINV}/nof/crt* \
> +  ${libdir}/${TARGET_SYS}/${BINV}/nof/libgcc*"
>  FILES_libgcov${PKGSUFFIX}-dev = " \
>    ${libdir}/${TARGET_SYS}/${BINV}/libgcov.a \
>    "

Hmm, that didn't work, and no nof libraries were generated on the target. 

zImage starting: loaded at 0x00800000 (sp: 0x018cdfb0)
Allocating 0x542f0c bytes for kernel ...
gunzipping (0x00000000 <- 0x0080f000:0x00a1886f)...done 0x4255c0 bytes
Attached initrd image at 0x00a19000-0x018ccf92
initrd head: 0x1f8b0808

Linux/PowerPC load: console=ttyS0,9600n8 ip=off root=/dev/ram rw rootwait init=/bin/sh
Finalizing device tree... flat tree at 0x18da0e0
 PM: Adding info for No Bus:ttyv9
[    0.582992] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[    0.588287] 83e00000.serial: ttyS0 at MMIO 0x83e01003 (irq = 20) is a 16550
[    0.783785] console [ttyS0] enabled
[    0.829080] brd: module loaded
[    0.875518] loop: module loaded
[    0.912757] xsysace 83600000.sysace: Xilinx SystemACE revision 1.0.12
[    0.989471] xsysace 83600000.sysace: No CF in slot
[    1.048455] Xilinx SystemACE device driver, major=254
[    1.109414] xilinx_emaclite 81000000.ethernet: Device Tree Probing
[    1.182945] xilinx_emaclite 81000000.ethernet: error registering MDIO bus
[    1.264024] xilinx_emaclite 81000000.ethernet: MAC address is now 00:0a:35:b7:78:00
[    1.357651] xilinx_emaclite 81000000.ethernet: Xilinx EmacLite at 0x81000000 mapped to 0xD10A0000, irq=17
[    1.472557] xilinx_ps2 81480000.ps2: Device Tree Probing 'ps2'
[    1.541805] xilinx_ps2 81480000.ps2: Xilinx PS2 at 0x81480000 mapped to 0xd1036000, irq=22
[    1.641181] xilinx_ps2 81481000.ps2: Device Tree Probing 'ps2'
[    1.710886] xilinx_ps2 81481000.ps2: Xilinx PS2 at 0x81481000 mapped to 0xd1038000, irq=23
[    1.811438] mousedev: PS/2 mouse device common for all mice
[    1.879037] i2c /dev entries driver
[    1.920644] Device Tree Probing 'i2c'
[    1.964913] xilinx-iic #0 at 0x81600000 mapped to 0xD10C0000, irq=18
[    2.042572] TCP cubic registered
[    2.080419] NET: Registered protocol family 17
[    2.874354] atkbd serio0: keyboard reset failed on xilinxps2/serio at 81480000
[    3.358644] RAMDISK: gzip image found at block 0
[    3.882546] input: AT Raw Set 2 keyboard as /devices/plb.0/xps-ps2.1/81481000.ps2/serio1/input/input0
[    6.370713] EXT2-fs (ram0): warning: mounting unchecked fs, running e2fsck is recommended
[    6.468154] VFS: Mounted root (ext2 filesystem) on device 1:0.
[    6.538666] Freeing unused kernel memory: 152k freed
/bin/sh: can't access tty; job control turned off
[    6.682471] Kernel panic - not syncing: Attempted to kill init!
[    6.752622] Rebooting in 180 seconds..


Elvis Dowson

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