Hi all,
I am going to replace the old do_bootm_linux() in lib_m68k/m68k_linux.c to pass bd_t struct, initrd and cmdline. So that, the linux kernel able to obtain the information of bd_t struct, initrd and cmdline thru the stack.
The implementation has been successful proven working very well in other platforms using linux 2.6.xx kernel.
Regards, TsiChung
-----Original Message----- From: Stefan Roese [mailto:sr@denx.de] Sent: Friday, August 10, 2007 8:15 AM To: u-boot-users@lists.sourceforge.net Cc: Wolfgang Denk; w.wegner@astro-kom.de; Aaron Sells; Liew Tsi Chung-r5aahp Subject: Re: [U-Boot-Users] interrupts in general / Fix for mcf5329evb - spurious interrupts on Linux/uClinux kernel boot
On Friday 10 August 2007, Wolfgang Denk wrote:
Please correct me if I am wrong, but should not interrupts be completely disabled before transferring control to the linux kernel to avoid any confusion?
Right.
IIRC the function we are talking about here is do_bootm_linux() (m68k version) which is called from the common do_bootm() function. Before calling do_bootm_linux() the follwing code is called:
/* * We have reached the point of no return: we are going to * overwrite all exception vector code, so we cannot easily * recover from any failures any more... */
iflag = disable_interrupts();
So at the point of do_bootm_linux() the interrupts should already be off. If this is not the case, then it is probably better to fix this in the disable_interrupts implementation of the ColdFire.
Best regards, Stefan
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