Re: [PATCH 5/15] bootwrapper: occuppied memory ranges
From: David Gibson <hidden>
Date: 2007-09-24 03:09:37
On Fri, Sep 21, 2007 at 06:04:18PM -0500, Milton Miller wrote:
Add a set of library routines to manage gross memory allocations. This code uses an array in bss to store upto 32 entrys with merging representing a range of memory below rma_end (aka end of real mode memory at 0). To use this code, a platform would set rma_end (find_rma_end), mark memory ranges occupied (add_known_ranges et al), initialize malloc in the spaces between (ranges_init_malloc), and optionally use the supplied vmlinux_alloc may be used. Signed-off-by: Milton Miller <redacted> --- vs 12172 rename rmo_end to rma_end (real mode area, as used in papr) removed section labels (now in ops.h) rediff ops.h, Makefile moved find_rma_end here (from kexec.c in a later patch) find_rma_end searches by node type for "memory", checks that the parent is the root node, then looks for a reg property with the first address/size pair starting at 0.
Urg. It's an awful lot of code for the bootwrapper. Am I right in understanding that the only reason to use the ranges code is for the ranges based malloc() and vmlinux_alloc() you get out of it? -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson