1 files changed, 227 insertions, 0 deletions

diff --git a/sys/boot/ia64/ski/bootinfo.c b/sys/boot/ia64/ski/bootinfo.c
new file mode 100644
index 0000000..d3d95ca
--- /dev/null
+++ b/sys/boot/ia64/ski/bootinfo.c
@@ -0,0 +1,227 @@
+/*-
+ * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <stand.h>
+#include <string.h>
+#include <sys/param.h>
+#include <sys/reboot.h>
+#include <sys/linker.h>
+#include <machine/elf.h>
+#include <machine/bootinfo.h>
+#include "bootstrap.h"
+
+extern char *ski_fmtdev(void *vdev);
+
+/*
+ * Copy the environment into the load area starting at (addr).
+ * Each variable is formatted as <name>=<value>, with a single nul
+ * separating each variable, and a double nul terminating the environment.
+ */
+vm_offset_t
+bi_copyenv(vm_offset_t addr)
+{
+    struct env_var	*ep;
+    
+    /* traverse the environment */
+    for (ep = environ; ep != NULL; ep = ep->ev_next) {
+	ski_copyin(ep->ev_name, addr, strlen(ep->ev_name));
+	addr += strlen(ep->ev_name);
+	ski_copyin("=", addr, 1);
+	addr++;
+	if (ep->ev_value != NULL) {
+	    ski_copyin(ep->ev_value, addr, strlen(ep->ev_value));
+	    addr += strlen(ep->ev_value);
+	}
+	ski_copyin("", addr, 1);
+	addr++;
+    }
+    ski_copyin("", addr, 1);
+    addr++;
+    return(addr);
+}
+
+/*
+ * Copy module-related data into the load area, where it can be
+ * used as a directory for loaded modules.
+ *
+ * Module data is presented in a self-describing format.  Each datum
+ * is preceded by a 32-bit identifier and a 32-bit size field.
+ *
+ * Currently, the following data are saved:
+ *
+ * MOD_NAME	(variable)		module name (string)
+ * MOD_TYPE	(variable)		module type (string)
+ * MOD_ARGS	(variable)		module parameters (string)
+ * MOD_ADDR	sizeof(vm_offset_t)	module load address
+ * MOD_SIZE	sizeof(size_t)		module size
+ * MOD_METADATA	(variable)		type-specific metadata
+ */
+#define COPY32(v, a) {				\
+    u_int32_t	x = (v);			\
+    ski_copyin(&x, a, sizeof(x));		\
+    a += sizeof(x);				\
+}
+
+#define MOD_STR(t, a, s) {			\
+    COPY32(t, a);				\
+    COPY32(strlen(s) + 1, a);			\
+    ski_copyin(s, a, strlen(s) + 1);		\
+    a += roundup(strlen(s) + 1, sizeof(u_int64_t));\
+}
+
+#define MOD_NAME(a, s)	MOD_STR(MODINFO_NAME, a, s)
+#define MOD_TYPE(a, s)	MOD_STR(MODINFO_TYPE, a, s)
+#define MOD_ARGS(a, s)	MOD_STR(MODINFO_ARGS, a, s)
+
+#define MOD_VAR(t, a, s) {			\
+    COPY32(t, a);				\
+    COPY32(sizeof(s), a);			\
+    ski_copyin(&s, a, sizeof(s));		\
+    a += roundup(sizeof(s), sizeof(u_int64_t));	\
+}
+
+#define MOD_ADDR(a, s)	MOD_VAR(MODINFO_ADDR, a, s)
+#define MOD_SIZE(a, s)	MOD_VAR(MODINFO_SIZE, a, s)
+
+#define MOD_METADATA(a, mm) {			\
+    COPY32(MODINFO_METADATA | mm->md_type, a);	\
+    COPY32(mm->md_size, a);			\
+    ski_copyin(mm->md_data, a, mm->md_size);	\
+    a += roundup(mm->md_size, sizeof(u_int64_t));\
+}
+
+#define MOD_END(a) {				\
+    COPY32(MODINFO_END, a);			\
+    COPY32(0, a);				\
+}
+
+vm_offset_t
+bi_copymodules(vm_offset_t addr)
+{
+    struct preloaded_file	*fp;
+    struct file_metadata	*md;
+
+    /* start with the first module on the list, should be the kernel */
+    for (fp = file_findfile(NULL, NULL); fp != NULL; fp = fp->f_next) {
+
+	MOD_NAME(addr, fp->f_name);	/* this field must come first */
+	MOD_TYPE(addr, fp->f_type);
+	if (fp->f_args)
+	    MOD_ARGS(addr, fp->f_args);
+	MOD_ADDR(addr, fp->f_addr);
+	MOD_SIZE(addr, fp->f_size);
+	for (md = fp->f_metadata; md != NULL; md = md->md_next)
+	    if (!(md->md_type & MODINFOMD_NOCOPY))
+		MOD_METADATA(addr, md);
+    }
+    MOD_END(addr);
+    return(addr);
+}
+
+/*
+ * Load the information expected by an alpha kernel.
+ *
+ * - The kernel environment is copied into kernel space.
+ * - Module metadata are formatted and placed in kernel space.
+ */
+int
+bi_load(struct bootinfo *bi, struct preloaded_file *fp)
+{
+    char			*rootdevname;
+    struct ski_devdesc		*rootdev;
+    struct preloaded_file	*xp;
+    vm_offset_t			addr, bootinfo_addr;
+    u_int			pad;
+    char			*kernelname;
+    vm_offset_t			ssym, esym;
+    struct file_metadata	*md;
+
+    /* 
+     * Allow the environment variable 'rootdev' to override the supplied device 
+     * This should perhaps go to MI code and/or have $rootdev tested/set by
+     * MI code before launching the kernel.
+     */
+    rootdevname = getenv("rootdev");
+    ski_getdev((void **)(&rootdev), rootdevname, NULL);
+    if (rootdev == NULL) {		/* bad $rootdev/$currdev */
+	printf("can't determine root device\n");
+	return(EINVAL);
+    }
+
+    /* Try reading the /etc/fstab file to select the root device */
+    getrootmount(ski_fmtdev((void *)rootdev));
+    free(rootdev);
+
+    ssym = esym = 0;
+    if ((md = file_findmetadata(fp, MODINFOMD_SSYM)) != NULL)
+	ssym = *((vm_offset_t *)&(md->md_data));
+    if ((md = file_findmetadata(fp, MODINFOMD_ESYM)) != NULL)
+	esym = *((vm_offset_t *)&(md->md_data));
+    if (ssym == 0 || esym == 0)
+	ssym = esym = 0;		/* sanity */
+
+    bi->bi_symtab = ssym;
+    bi->bi_esymtab = esym;
+
+    /* find the last module in the chain */
+    addr = 0;
+    for (xp = file_findfile(NULL, NULL); xp != NULL; xp = xp->f_next) {
+	if (addr < (xp->f_addr + xp->f_size))
+	    addr = xp->f_addr + xp->f_size;
+    }
+    /* pad to a page boundary */
+    pad = (u_int)addr & PAGE_MASK;
+    if (pad != 0) {
+	pad = PAGE_SIZE - pad;
+	addr += pad;
+    }
+
+    /* copy our environment */
+    bi->bi_envp = addr;
+    addr = bi_copyenv(addr);
+
+    /* pad to a page boundary */
+    pad = (u_int)addr & PAGE_MASK;
+    if (pad != 0) {
+	pad = PAGE_SIZE - pad;
+	addr += pad;
+    }
+    /* copy module list and metadata */
+    bi->bi_modulep = addr;
+    addr = bi_copymodules(addr);
+
+    /* all done copying stuff in, save end of loaded object space */
+    bi->bi_kernend = addr;
+
+    kernelname = getenv("kernelname");
+    if (kernelname) {
+	strncpy(bi->bi_kernel, kernelname, sizeof(bi->bi_kernel) - 1);
+    }
+
+    return(0);
+}