1 files changed, 434 insertions, 0 deletions

diff --git a/stand/common/metadata.c b/stand/common/metadata.c
new file mode 100644
index 000000000000..df45d40a3d17
--- /dev/null
+++ b/stand/common/metadata.c
@@ -0,0 +1,434 @@
+/*-
+ * 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.
+ *
+ *	from: FreeBSD: src/sys/boot/sparc64/loader/metadata.c,v 1.6
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <stand.h>
+#include <sys/param.h>
+#include <sys/reboot.h>
+#include <sys/linker.h>
+#include <sys/boot.h>
+#if defined(LOADER_FDT_SUPPORT)
+#include <fdt_platform.h>
+#endif
+
+#include <machine/metadata.h>
+
+#include "bootstrap.h"
+
+#if defined(__sparc64__)
+#include <openfirm.h>
+
+extern struct tlb_entry *dtlb_store;
+extern struct tlb_entry *itlb_store;
+
+extern int dtlb_slot;
+extern int itlb_slot;
+
+static int
+md_bootserial(void)
+{
+    char        buf[64];
+    ihandle_t        inst;
+    phandle_t        input;
+    phandle_t        node;
+    phandle_t        output;
+
+    if ((node = OF_finddevice("/options")) == -1)
+        return(-1);
+    if (OF_getprop(node, "input-device", buf, sizeof(buf)) == -1)
+        return(-1);
+    input = OF_finddevice(buf);
+    if (OF_getprop(node, "output-device", buf, sizeof(buf)) == -1)
+        return(-1);
+    output = OF_finddevice(buf);
+    if (input == -1 || output == -1 ||
+        OF_getproplen(input, "keyboard") >= 0) {
+        if ((node = OF_finddevice("/chosen")) == -1)
+            return(-1);
+        if (OF_getprop(node, "stdin", &inst, sizeof(inst)) == -1)
+            return(-1);
+        if ((input = OF_instance_to_package(inst)) == -1)
+            return(-1);
+        if (OF_getprop(node, "stdout", &inst, sizeof(inst)) == -1)
+            return(-1);
+        if ((output = OF_instance_to_package(inst)) == -1)
+            return(-1);
+    }
+    if (input != output)
+        return(-1);
+    if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1)
+        return(-1);
+    if (strcmp(buf, "serial") != 0)
+        return(-1);
+    return(0);
+}
+#endif
+
+int
+md_getboothowto(char *kargs)
+{
+    char	*cp;
+    int		howto;
+    int		active;
+    int		i;
+
+    /* Parse kargs */
+    howto = 0;
+    if (kargs != NULL) {
+	cp = kargs;
+	active = 0;
+	while (*cp != 0) {
+	    if (!active && (*cp == '-')) {
+		active = 1;
+	    } else if (active)
+		switch (*cp) {
+		case 'a':
+		    howto |= RB_ASKNAME;
+		    break;
+		case 'C':
+		    howto |= RB_CDROM;
+		    break;
+		case 'd':
+		    howto |= RB_KDB;
+		    break;
+		case 'D':
+		    howto |= RB_MULTIPLE;
+		    break;
+		case 'm':
+		    howto |= RB_MUTE;
+		    break;
+		case 'g':
+		    howto |= RB_GDB;
+		    break;
+		case 'h':
+		    howto |= RB_SERIAL;
+		    break;
+		case 'p':
+		    howto |= RB_PAUSE;
+		    break;
+		case 'r':
+		    howto |= RB_DFLTROOT;
+		    break;
+		case 's':
+		    howto |= RB_SINGLE;
+		    break;
+		case 'v':
+		    howto |= RB_VERBOSE;
+		    break;
+		default:
+		    active = 0;
+		    break;
+		}
+	    cp++;
+	}
+    }
+
+    /* get equivalents from the environment */
+    for (i = 0; howto_names[i].ev != NULL; i++)
+	if (getenv(howto_names[i].ev) != NULL)
+	    howto |= howto_names[i].mask;
+#if defined(__sparc64__)
+    if (md_bootserial() != -1)
+	howto |= RB_SERIAL;
+#else
+    if (!strcmp(getenv("console"), "comconsole"))
+	howto |= RB_SERIAL;
+    if (!strcmp(getenv("console"), "nullconsole"))
+	howto |= RB_MUTE;
+#endif
+    return(howto);
+}
+
+/*
+ * 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.
+ */
+static vm_offset_t
+md_copyenv(vm_offset_t addr)
+{
+    struct env_var	*ep;
+
+    /* traverse the environment */
+    for (ep = environ; ep != NULL; ep = ep->ev_next) {
+	archsw.arch_copyin(ep->ev_name, addr, strlen(ep->ev_name));
+	addr += strlen(ep->ev_name);
+	archsw.arch_copyin("=", addr, 1);
+	addr++;
+	if (ep->ev_value != NULL) {
+	    archsw.arch_copyin(ep->ev_value, addr, strlen(ep->ev_value));
+	    addr += strlen(ep->ev_value);
+	}
+	archsw.arch_copyin("", addr, 1);
+	addr++;
+    }
+    archsw.arch_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
+ */
+
+static int align;
+
+#define COPY32(v, a, c) {			\
+    u_int32_t	x = (v);			\
+    if (c)					\
+        archsw.arch_copyin(&x, a, sizeof(x));	\
+    a += sizeof(x);				\
+}
+
+#define MOD_STR(t, a, s, c) {			\
+    COPY32(t, a, c);				\
+    COPY32(strlen(s) + 1, a, c)			\
+    if (c)					\
+        archsw.arch_copyin(s, a, strlen(s) + 1);\
+    a += roundup(strlen(s) + 1, align);		\
+}
+
+#define MOD_NAME(a, s, c)	MOD_STR(MODINFO_NAME, a, s, c)
+#define MOD_TYPE(a, s, c)	MOD_STR(MODINFO_TYPE, a, s, c)
+#define MOD_ARGS(a, s, c)	MOD_STR(MODINFO_ARGS, a, s, c)
+
+#define MOD_VAR(t, a, s, c) {			\
+    COPY32(t, a, c);				\
+    COPY32(sizeof(s), a, c);			\
+    if (c)					\
+        archsw.arch_copyin(&s, a, sizeof(s));	\
+    a += roundup(sizeof(s), align);		\
+}
+
+#define MOD_ADDR(a, s, c)	MOD_VAR(MODINFO_ADDR, a, s, c)
+#define MOD_SIZE(a, s, c)	MOD_VAR(MODINFO_SIZE, a, s, c)
+
+#define MOD_METADATA(a, mm, c) {		\
+    COPY32(MODINFO_METADATA | mm->md_type, a, c);\
+    COPY32(mm->md_size, a, c);			\
+    if (c)					\
+        archsw.arch_copyin(mm->md_data, a, mm->md_size);\
+    a += roundup(mm->md_size, align);		\
+}
+
+#define MOD_END(a, c) {				\
+    COPY32(MODINFO_END, a, c);			\
+    COPY32(0, a, c);				\
+}
+
+static vm_offset_t
+md_copymodules(vm_offset_t addr, int kern64)
+{
+    struct preloaded_file	*fp;
+    struct file_metadata	*md;
+    uint64_t			scratch64;
+    int				c;
+
+    c = addr != 0;
+    /* 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, c);	/* this field must come first */
+	MOD_TYPE(addr, fp->f_type, c);
+	if (fp->f_args)
+	    MOD_ARGS(addr, fp->f_args, c);
+	if (kern64) {
+		scratch64 = fp->f_addr;
+		MOD_ADDR(addr, scratch64, c);
+		scratch64 = fp->f_size;
+		MOD_SIZE(addr, scratch64, c);
+	} else {
+		MOD_ADDR(addr, fp->f_addr, c);
+		MOD_SIZE(addr, fp->f_size, c);
+	}
+	for (md = fp->f_metadata; md != NULL; md = md->md_next) {
+	    if (!(md->md_type & MODINFOMD_NOCOPY)) {
+		MOD_METADATA(addr, md, c);
+	    }
+	}
+    }
+    MOD_END(addr, c);
+    return(addr);
+}
+
+/*
+ * Load the information expected by a kernel.
+ *
+ * - The 'boothowto' argument is constructed
+ * - The 'bootdev' argument is constructed
+ * - The kernel environment is copied into kernel space.
+ * - Module metadata are formatted and placed in kernel space.
+ */
+int
+md_load_dual(char *args, vm_offset_t *modulep, vm_offset_t *dtb, int kern64)
+{
+    struct preloaded_file	*kfp;
+    struct preloaded_file	*xp;
+    struct file_metadata	*md;
+    vm_offset_t			kernend;
+    vm_offset_t			addr;
+    vm_offset_t			envp;
+#if defined(LOADER_FDT_SUPPORT)
+    vm_offset_t			fdtp;
+#endif
+    vm_offset_t			size;
+    uint64_t			scratch64;
+    char			*rootdevname;
+    int				howto;
+
+    align = kern64 ? 8 : 4;
+    howto = md_getboothowto(args);
+
+    /*
+     * 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");
+    if (rootdevname == NULL)
+	rootdevname = getenv("currdev");
+    /* Try reading the /etc/fstab file to select the root device */
+    getrootmount(rootdevname);
+
+    /* 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 */
+    addr = roundup(addr, PAGE_SIZE);
+
+    /* Copy our environment */
+    envp = addr;
+    addr = md_copyenv(addr);
+
+    /* Pad to a page boundary */
+    addr = roundup(addr, PAGE_SIZE);
+
+#if defined(LOADER_FDT_SUPPORT)
+    /* Copy out FDT */
+    fdtp = 0;
+#if defined(__powerpc__)
+    if (getenv("usefdt") != NULL)
+#endif
+    {
+	size = fdt_copy(addr);
+	fdtp = addr;
+	addr = roundup(addr + size, PAGE_SIZE);
+    }
+#endif
+
+    kernend = 0;
+    kfp = file_findfile(NULL, kern64 ? "elf64 kernel" : "elf32 kernel");
+    if (kfp == NULL)
+	kfp = file_findfile(NULL, "elf kernel");
+    if (kfp == NULL)
+	panic("can't find kernel file");
+    file_addmetadata(kfp, MODINFOMD_HOWTO, sizeof howto, &howto);
+    if (kern64) {
+	scratch64 = envp;
+	file_addmetadata(kfp, MODINFOMD_ENVP, sizeof scratch64, &scratch64);
+#if defined(LOADER_FDT_SUPPORT)
+	if (fdtp != 0) {
+	    scratch64 = fdtp;
+	    file_addmetadata(kfp, MODINFOMD_DTBP, sizeof scratch64, &scratch64);
+	}
+#endif
+	scratch64 = kernend;
+	file_addmetadata(kfp, MODINFOMD_KERNEND,
+		sizeof scratch64, &scratch64);
+    } else {
+	file_addmetadata(kfp, MODINFOMD_ENVP, sizeof envp, &envp);
+#if defined(LOADER_FDT_SUPPORT)
+	if (fdtp != 0)
+	    file_addmetadata(kfp, MODINFOMD_DTBP, sizeof fdtp, &fdtp);
+#endif
+	file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof kernend, &kernend);
+    }
+
+#if defined(__sparc64__)
+    file_addmetadata(kfp, MODINFOMD_DTLB_SLOTS,
+	sizeof dtlb_slot, &dtlb_slot);
+    file_addmetadata(kfp, MODINFOMD_ITLB_SLOTS,
+	sizeof itlb_slot, &itlb_slot);
+    file_addmetadata(kfp, MODINFOMD_DTLB,
+	dtlb_slot * sizeof(*dtlb_store), dtlb_store);
+    file_addmetadata(kfp, MODINFOMD_ITLB,
+	itlb_slot * sizeof(*itlb_store), itlb_store);
+#endif
+
+    *modulep = addr;
+    size = md_copymodules(0, kern64);
+    kernend = roundup(addr + size, PAGE_SIZE);
+
+    md = file_findmetadata(kfp, MODINFOMD_KERNEND);
+    if (kern64) {
+	scratch64 = kernend;
+	bcopy(&scratch64, md->md_data, sizeof scratch64);
+    } else {
+	bcopy(&kernend, md->md_data, sizeof kernend);
+    }
+
+    (void)md_copymodules(addr, kern64);
+#if defined(LOADER_FDT_SUPPORT)
+    if (dtb != NULL)
+	*dtb = fdtp;
+#endif
+
+    return(0);
+}
+
+int
+md_load(char *args, vm_offset_t *modulep, vm_offset_t *dtb)
+{
+    return (md_load_dual(args, modulep, dtb, 0));
+}
+
+#if defined(__mips__) || defined(__powerpc__)
+int
+md_load64(char *args, vm_offset_t *modulep, vm_offset_t *dtb)
+{
+    return (md_load_dual(args, modulep, dtb, 1));
+}
+#endif