Ingo Hornberger wrote: > Hi Bracha, > > I assume that you're using an 8xx!? > > This code isn't completely updated yet, but here is a small patch which > should be more or less working... > There is a patch, that did what you are attempting to do below correct way. mfspr(SPRN_IMMR) does not correctly identify the board, you need to define BOARD_CHIP_NAME somewhere in board-specific code to get it defined. The <>_device.c and <>_sys.c pair is in the linus git tree currently, and error message below will not appear even if BOARD_CHIP_NAME is undefined.
You might want to try more recent kernel. > regards, > Ingo > > On Sun, 2005-11-27 at 12:22 +0200, Landau, Bracha wrote: >> I'm trying to move to the latest kernel release from linux 2.6.13.4 on the >> MPC8272ADS board. >> 2.6.13.4 works, but from 2.6.14 and up (I don't know where from 2.6.13.4 to >> 2.6.14 the problem starts) the kernel crashes on bootup with the message >> "Kernel BUG in ppc_sys_init at arch/ppc/syslib/ppc_sys_init.c:131" >> Anyone know how to fix this problem? >> >> _______________________________________________ >> Linuxppc-embedded mailing list >> Linuxppc-embedded at ozlabs.org >> https://ozlabs.org/mailman/listinfo/linuxppc-embedded >> >> >> ------------------------------------------------------------------------ >> >> diff -Nurb a/arch/ppc/syslib/m8xx_setup.c b/arch/ppc/syslib/m8xx_setup.c >> --- a/arch/ppc/syslib/m8xx_setup.c 2005-10-28 02:02:08.000000000 +0200 >> +++ b/arch/ppc/syslib/m8xx_setup.c 2005-11-25 11:11:03.000000000 +0100 >> @@ -82,7 +82,7 @@ >> ROOT_DEV = Root_HDA1; /* hda1 */ >> #endif >> >> -#ifdef CONFIG_BLK_DEV_INITRD >> +#if defined(CONFIG_BLK_DEV_INITRD) || defined(CONFIG_EXTRACT_ROOTFS) >> #if 0 >> ROOT_DEV = Root_FD0; /* floppy */ >> rd_prompt = 1; >> @@ -389,7 +389,7 @@ >> m8xx_setup_pci_ptrs(); >> #endif >> >> -#ifdef CONFIG_BLK_DEV_INITRD >> +#if defined(CONFIG_BLK_DEV_INITRD) || defined(CONFIG_EXTRACT_ROOTFS) >> /* take care of initrd if we have one */ >> if ( r4 ) >> { >> @@ -404,6 +404,15 @@ >> strcpy(cmd_line, (char *)(r6+KERNELBASE)); >> } >> >> + /* >> + * Check if we are really on a Power QUICC CPU. >> + * Note, that we do not halt the Kernel at this point, >> + * because we won't get any output here otherwise. >> + */ >> + if( (mfspr(SPRN_PVR) >> 16) != 0x0050 ) >> + printk( KERN_ERR "ERROR: %s: %d: Wrong CPU Type! (We assumed a >> Power QUICC CPU)\n" ); >> + identify_ppc_sys_by_id(mfspr(SPRN_IMMR)); >> + >> ppc_md.setup_arch = m8xx_setup_arch; >> ppc_md.show_percpuinfo = m8xx_show_percpuinfo; >> ppc_md.irq_canonicalize = NULL; >> diff -Nurb a/arch/ppc/syslib/mpc8xx_sys.c b/arch/ppc/syslib/mpc8xx_sys.c >> --- a/arch/ppc/syslib/mpc8xx_sys.c 2005-10-28 02:02:08.000000000 +0200 >> +++ b/arch/ppc/syslib/mpc8xx_sys.c 2005-11-25 11:11:03.000000000 +0100 >> @@ -20,9 +20,16 @@ >> >> struct ppc_sys_spec *cur_ppc_sys_spec; >> struct ppc_sys_spec ppc_sys_specs[] = { >> + /* The mpc85x and 86x, all have the system ID 0x00. >> + * And as it seems that even the 885 has the ID 0x00, >> + * I assume 0x00 for all MPC8XX systems. >> + * For other cases, you should add a new entry above the >> + * MPC8XX. You could use the first 8 bits to make >> + * a more specific match for your system. >> + */ >> { >> - .ppc_sys_name = "MPC86X", >> - .mask = 0xFFFFFFFF, >> + .ppc_sys_name = "MPC8XX", >> + .mask = 0x00FF0000, >> .value = 0x00000000, >> .num_devices = 2, >> .device_list = (enum ppc_sys_devices[]) >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> Linuxppc-embedded mailing list >> Linuxppc-embedded at ozlabs.org >> https://ozlabs.org/mailman/listinfo/linuxppc-embedded -- Sincerely, Vitaly
