freebsd-src/sys/boot/common/Makefile.inc

# $Id: Makefile.inc,v 1.6 1998/09/30 19:38:26 peter Exp $

SRCS+=	bcache.c boot.c commands.c console.c devopen.c interp.c 
SRCS+=	interp_backslash.c interp_parse.c load_aout.c load_elf.c ls.c misc.c 
SRCS+=	module.c panic.c

# Machine-independant ISA PnP
.if HAVE_ISABUS
SRCS+=	isapnp.c
.endif
.if HAVE_PNP
SRCS+=	pnp.c
.endif
Implement a simple LRU block cache. By default this is initialised to 16k, and will bypass transfers for more than 8k. Blocks are invalidated after 2 seconds, so removable media should not confuse the cache. The 8k threshold is a compromise; all UFS transfers performed by libstand are 8k or less, so large file reads thrash the cache. However many filesystem metadata operations are also performed using 8k blocks, so using a lower threshold gives poor performance. Those of you with an eye for cache algorithms are welcome to tell me how badly this one sucks; you can start with the 'bcachestats' command which will print the contents of the cache and access statistics. 1998-11-02 23:28:11 +00:00			`# $Id: Makefile.inc,v 1.6 1998/09/30 19:38:26 peter Exp $`
This is the new unified bootstrap, sometimes known previously as the 'three-stage' bootstrap. There are a number of caveats with the code in its current state: - The i386 bootstrap only supports booting from a floppy. - The kernel and kld do not yet know how to deal with the extended information and module summary passed in. - PnP-based autodetection and demand loading of modules is not implemented. - i386 ELF kernel loading is not ready yet. - The i386 bootstrap is loaded via an ugly blockmap. On the alpha, both net- and disk-booting (SRM console machines only) is supported. No blockmaps are used by this code. Obtained from: Parts from the NetBSD/i386 standalone bootstrap. 1998-08-21 03:17:42 +00:00
Implement a simple LRU block cache. By default this is initialised to 16k, and will bypass transfers for more than 8k. Blocks are invalidated after 2 seconds, so removable media should not confuse the cache. The 8k threshold is a compromise; all UFS transfers performed by libstand are 8k or less, so large file reads thrash the cache. However many filesystem metadata operations are also performed using 8k blocks, so using a lower threshold gives poor performance. Those of you with an eye for cache algorithms are welcome to tell me how badly this one sucks; you can start with the 'bcachestats' command which will print the contents of the cache and access statistics. 1998-11-02 23:28:11 +00:00			`SRCS+= bcache.c boot.c commands.c console.c devopen.c interp.c`
			`SRCS+= interp_backslash.c interp_parse.c load_aout.c load_elf.c ls.c misc.c`
			`SRCS+= module.c panic.c`
Resynch with working sources before BTX integration. - Use format-independant module allocator. - Conditionalise ISA PnP support. - Simplify PnP enumerator interface. - Improve module/object searching. - Add missing depend/install targets in BTX makefiles. - Pass the kernel environment and module data in extended bootinfo fields. - Add a pointer to the end of the kernel + modules in bootinfo. - Fix parsing of old-style kernel arguments. 1998-09-14 18:27:06 +00:00
			`# Machine-independant ISA PnP`
			`.if HAVE_ISABUS`
			`SRCS+= isapnp.c`
			`.endif`
			`.if HAVE_PNP`
			`SRCS+= pnp.c`
			`.endif`