49 lines
859 B
C
49 lines
859 B
C
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#include <sys/param.h>
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#include <sys/reboot.h>
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#include <dev/ramdisk.h>
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extern int boothowto;
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#ifndef MINIROOTSIZE
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#define MINIROOTSIZE 512
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#endif
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#define ROOTBYTES (MINIROOTSIZE << DEV_BSHIFT)
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/* These two could be patched. */
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int rd_root_size = ROOTBYTES;
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char rd_root_image[ROOTBYTES] = "|This is the root ramdisk!\n";
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/*
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* This is called during autoconfig.
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*/
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void
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rd_attach_hook(unit, rd)
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int unit;
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struct rd_conf *rd;
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{
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if (unit == 0) {
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/* Setup root ramdisk */
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rd->rd_addr = (caddr_t) rd_root_image;
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rd->rd_size = (size_t) rd_root_size;
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rd->rd_type = RD_KMEM_FIXED;
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printf(" fixed, %d blocks", MINIROOTSIZE);
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}
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}
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/*
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* This is called during open (i.e. mountroot)
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*/
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void
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rd_open_hook(unit, rd)
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int unit;
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struct rd_conf *rd;
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{
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if (unit == 0) {
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/* The root ramdisk only works single-user. */
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boothowto |= RB_SINGLE;
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}
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}
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