From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <39D89C8F.4F328DAF@home.com> Date: Mon, 02 Oct 2000 09:32:47 -0500 From: Tim Montgomery MIME-Version: 1.0 To: Linux PPC Developer Subject: flying blind with BATs Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: hello, I am trying to get the ppc kernel loaded on a 750-based embedded board, and I've got an ultra-basic bootloader (the board is not PReP or CHRP-compliant), but I believe I am having trouble with the BAT mappings. I have the BATs configure (by the bootloader) such that 0xc0000000 (virtual) is mapped to 0x00000000 (phys SDRAM base), but after the image is decompressed (to the virtual addr), I get garbage when I do a dump at 0xc0000000 (i.e. the kernel isn't there.) I am executing the bootloader itself out of a region well above (4MB) the kernel space. Before I spend too much time reinventing the wheel (and beating my head against the wall), I was curious if there was a 7xx-based bootloader out there that I could modify to fit my needs. Any other pointers/tips regarding machine state required on a 750 prior to jumping to the kernel would also be appreciated. Regards, Tim ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/