update to netbsd

1 files changed, 122 insertions, 0 deletions

diff --git a/sys/arch/alpha/stand/bootxx.c b/sys/arch/alpha/stand/bootxx.c
new file mode 100644
index 00000000000..48c21f3c7fa
--- /dev/null
+++ b/sys/arch/alpha/stand/bootxx.c
@@ -0,0 +1,122 @@
+#include <sys/param.h>
+#include <machine/prom.h>
+
+#include "bbinfo.h"
+
+extern _end, start;
+
+struct bbinfoloc desc = {
+	0xbabefacedeadbeef,
+	(u_int64_t)&start,
+	(u_int64_t)&_end,
+	0xdeadbeeffacebabe
+};
+
+int
+open_dev(fd)
+	int *fd;
+{
+	prom_return_t ret;
+	char devname[64];
+	int devlen;
+
+	/*
+	 * XXX
+         * We don't know what device names look like yet,
+         * so we can't change them.
+         */
+        ret.bits = prom_getenv(PROM_E_BOOTED_DEV, devname, sizeof(devname));
+        devlen = ret.u.retval;
+
+        ret.bits = prom_open(devname, devlen);
+        if (ret.u.status)
+                return 0;
+
+	*fd = ret.u.retval;
+
+	return 1;
+}
+
+int
+load_file(bbinfop, loadaddr)
+	struct bbinfo *bbinfop;
+	char *loadaddr;
+{
+	prom_return_t ret;
+	int32_t cksum, *int32p;
+	int i, n, fd, rv;
+	char *cp;
+
+	if (bbinfop->nblocks <= 0) {
+		puts("invalid number of blocks in boot program description\n");
+		return 0;
+	}
+	if (bbinfop->bsize < 4096 || bbinfop->bsize > MAXBSIZE) {
+		puts("invalid block size in boot program description\n");
+		return 0;
+	}
+
+	int32p = (int32_t *)&_end;
+	n = bbinfop->nblocks +
+	    (sizeof(*bbinfop) / sizeof(bbinfop->blocks[0])) - 1;
+	if ((long)&_end - (long)&start + sizeof(bbinfop->blocks[0]) * n >
+	    15 * 512) {
+		puts("way too many blocks\n");
+		return 0;
+	}
+
+	for (i = 0, cksum = 0; i < n; i++)
+		cksum += *int32p++;
+	if (cksum != 0) {
+		puts("invalid checksum in boot program description\n");
+		return 0;
+	}
+
+	if (!open_dev(&fd)) {
+		puts("couldn't open disk device\n");
+		return 0;
+	}
+
+	cp = loadaddr;
+	rv = 1;
+	for (i = 0; i < bbinfop->nblocks; i++) {
+puts(".");
+		ret.bits = prom_read(fd, bbinfop->bsize, cp,
+		    bbinfop->blocks[i]);
+puts("\b");
+		if (ret.u.status) {
+			rv = 0;
+			puts("BLOCK READ ERROR!\n");
+			break;
+		}
+		cp += bbinfop->bsize;
+	}
+	prom_close(fd);
+
+	return (rv);
+}
+
+void
+main()
+{
+	struct bbinfo *bbinfop;
+	char *loadaddr;
+	void (*entry) __P((void));
+
+	/* Init prom callback vector. */
+	init_prom_calls();
+
+	puts("\nNetBSD/Alpha primary boot...\n");
+
+	bbinfop = (struct bbinfo *)&_end;
+	loadaddr = (char *)SECONDARY_LOAD_ADDRESS;
+	if (!load_file(bbinfop, loadaddr)) {
+		puts("\nLOAD FAILED!\n\n");
+		return;
+	}
+
+	puts("Jumping to entry point...\n");
+	entry = (void (*)())loadaddr;
+	(*entry)();
+	puts("SECONDARY BOOT BLOCK RETURNED!\n");
+}