5 messages, 4 authors, 2005-11-28 · open the first message on its own page
From: Landau, Bracha <hidden>
Date: 2005-11-27 10:34:30
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=20 "Kernel BUG in ppc_sys_init at arch/ppc/syslib/ppc_sys_init.c:131" Anyone know how to fix this problem?
From: Ingo Hornberger <hidden>
Date: 2005-11-28 10:39:40
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... 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@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
From: Ingo Hornberger <hidden>
Date: 2005-11-28 11:25:23
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... 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@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
From: Vitaly Bordug <hidden>
Date: 2005-11-28 13:04:07
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@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
The patch that 'fix' it is currently ready, I am about to submit it today, after I'll assure that nothing missed there. -- Sincerely, Vitaly
From: Vitaly Bordug <hidden>
Date: 2005-11-28 13:10:01
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:quoted
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@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@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
-- Sincerely, Vitaly