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Unify metadata load files for arm, mips, powerpc, sparc64

Browse source 
Summary:
All metadata.c files are very similar, with only trivial changes.  Unify them
into a single common file, with minor special-casing where needed.

Reviewed By: imp
Differential Revision: https://reviews.freebsd.org/D13978
This commit is contained in:
Justin Hibbits 2018-02-13 03:44:50 +00:00
parent 980b68eaa2
commit d3e1307bf5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=329190
15 changed files with 126 additions and 1448 deletions
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135
stand/powerpc/ofw/metadata.c → stand/common/metadata.c
View file

@ -34,12 +34,63 @@ __FBSDID("$FreeBSD$");
#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)
{
@ -47,7 +98,7 @@ md_getboothowto(char *kargs)
int howto;
int active;
int i;
/* Parse kargs */
howto = 0;
if (kargs != NULL) {
@ -98,14 +149,20 @@ md_getboothowto(char *kargs)
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);
}
@ -114,11 +171,11 @@ md_getboothowto(char *kargs)
* Each variable is formatted as <name>=<value>, with a single nul
* separating each variable, and a double nul terminating the environment.
*/
vm_offset_t
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));
@ -199,7 +256,7 @@ static int align;
COPY32(0, a, c); \
}
vm_offset_t
static vm_offset_t
md_copymodules(vm_offset_t addr, int kern64)
{
struct preloaded_file *fp;
@ -235,7 +292,7 @@ md_copymodules(vm_offset_t addr, int kern64)
}
/*
* Load the information expected by a powerpc kernel.
* Load the information expected by a kernel.
*
* - The 'boothowto' argument is constructed
* - The 'bootdev' argument is constructed
@ -251,7 +308,9 @@ md_load_dual(char *args, vm_offset_t *modulep, vm_offset_t *dtb, int kern64)
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;
@ -260,40 +319,45 @@ md_load_dual(char *args, vm_offset_t *modulep, vm_offset_t *dtb, int kern64)
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.
/*
* 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");
rootdevname = getenv("currdev");
/* Try reading the /etc/fstab file to select the root device */
getrootmount(rootdevname);
/* find the last module in the chain */
/* 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 to a page boundary */
addr = roundup(addr, PAGE_SIZE);
/* copy our environment */
/* Copy our environment */
envp = addr;
addr = md_copyenv(addr);
/* pad to a page boundary */
/* Pad to a page boundary */
addr = roundup(addr, PAGE_SIZE);
#if defined(LOADER_FDT_SUPPORT)
/* Copy out FDT */
*dtb = fdtp = 0;
if (getenv("usefdt") != NULL) {
size = fdt_copy(addr);
*dtb = fdtp = addr;
addr = roundup(addr + size, PAGE_SIZE);
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");
@ -305,19 +369,35 @@ md_load_dual(char *args, vm_offset_t *modulep, vm_offset_t *dtb, int kern64)
if (kern64) {
scratch64 = envp;
file_addmetadata(kfp, MODINFOMD_ENVP, sizeof scratch64, &scratch64);
if (fdtp != 0) {
#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);
file_addmetadata(kfp, MODINFOMD_KERNEND,
sizeof scratch64, &scratch64);
} else {
file_addmetadata(kfp, MODINFOMD_ENVP, sizeof envp, &envp);
if (fdtp != 0)
#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);
@ -329,8 +409,12 @@ md_load_dual(char *args, vm_offset_t *modulep, vm_offset_t *dtb, int kern64)
} 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);
}
@ -341,9 +425,10 @@ 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

4
stand/loader.mk
View file

@ -20,12 +20,16 @@ SRCS+= load_elf32.c reloc_elf32.c
.elif ${MACHINE_CPUARCH} == "powerpc"
SRCS+= load_elf32.c reloc_elf32.c
SRCS+= load_elf64.c reloc_elf64.c
SRCS+= metadata.c
.elif ${MACHINE_CPUARCH} == "sparc64"
SRCS+= load_elf64.c reloc_elf64.c
SRCS+= metadata.c
.elif ${MACHINE_ARCH:Mmips64*} != ""
SRCS+= load_elf64.c reloc_elf64.c
SRCS+= metadata.c
.elif ${MACHINE} == "mips"
SRCS+= load_elf32.c reloc_elf32.c
SRCS+= metadata.c
.endif
.if ${LOADER_DISK_SUPPORT:Uyes} == "yes"

1
stand/mips/beri/loader/Makefile
View file

@ -47,7 +47,6 @@ SRCS= start.S \
main.c \
devicename.c \
exec.c \
metadata.c \
vers.c \
arch.c

2
stand/mips/beri/loader/exec.c
View file

@ -85,7 +85,7 @@ beri_elf64_exec(struct preloaded_file *fp)
}
ehdr = (Elf_Ehdr *)md->md_data;
error = md_load64(fp->f_args, &mdp);
error = md_load64(fp->f_args, &mdp, NULL);
if (error) {
printf("%s: md_load64 failed\n", fp->f_name);
return (error);

2
stand/mips/beri/loader/loader.h
View file

@ -56,7 +56,7 @@ extern char **boot2_envv;
extern struct bootinfo boot2_bootinfo;
/* metadata.c */
int md_load64(char *args, vm_offset_t *modulep);
int md_load64(char *args, vm_offset_t *modulep, vm_offset_t *dtbp);
/* vers.c */
extern char bootprog_info[];

355
stand/mips/beri/loader/metadata.c
View file

@ -1,355 +0,0 @@
/*-
* 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 <machine/metadata.h>
#include "bootstrap.h"
/*
* Return a 'boothowto' value corresponding to the kernel arguments in
* (kargs) and any relevant environment variables.
*/
static struct
{
const char *ev;
int mask;
} howto_names[] = {
{"boot_askname", RB_ASKNAME},
{"boot_cdrom", RB_CDROM},
{"boot_ddb", RB_KDB},
{"boot_dfltroot", RB_DFLTROOT},
{"boot_gdb", RB_GDB},
{"boot_multicons", RB_MULTIPLE},
{"boot_mute", RB_MUTE},
{"boot_pause", RB_PAUSE},
{"boot_serial", RB_SERIAL},
{"boot_single", RB_SINGLE},
{"boot_verbose", RB_VERBOSE},
{NULL, 0}
};
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 (!strcmp(getenv("console"), "comconsole"))
howto |= RB_SERIAL;
if (!strcmp(getenv("console"), "nullconsole"))
howto |= RB_MUTE;
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.
*/
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); \
}
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 powerpc 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, 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;
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);
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);
scratch64 = kernend;
file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof scratch64, &scratch64);
} else {
file_addmetadata(kfp, MODINFOMD_ENVP, sizeof envp, &envp);
file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof kernend, &kernend);
}
*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);
return(0);
}
int
md_load(char *args, vm_offset_t *modulep)
{
return (md_load_dual(args, modulep, 0));
}
int
md_load64(char *args, vm_offset_t *modulep)
{
return (md_load_dual(args, modulep, 1));
}

2
stand/powerpc/kboot/Makefile
View file

@ -17,7 +17,7 @@ NEWVERSWHAT= "kboot loader" ${MACHINE_ARCH}
INSTALLFLAGS= -b
# Architecture-specific loader code
SRCS= conf.c metadata.c vers.c main.c ppc64_elf_freebsd.c
SRCS= conf.c vers.c main.c ppc64_elf_freebsd.c
SRCS+= host_syscall.S hostcons.c hostdisk.c kerneltramp.S kbootfdt.c
SRCS+= ucmpdi2.c

1
stand/powerpc/kboot/main.c
View file

@ -291,6 +291,7 @@ main(int argc, const char **argv)
setenv("currdev", bootdev, 1);
setenv("loaddev", bootdev, 1);
setenv("LINES", "24", 1);
setenv("usefdt", "1", 1);
interact(); /* doesn't return */

348
stand/powerpc/kboot/metadata.c
View file

@ -1,348 +0,0 @@
/*-
* 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/endian.h>
#include <sys/reboot.h>
#include <sys/linker.h>
#include <sys/boot.h>
#include <fdt_platform.h>
#include <machine/metadata.h>
#include "bootstrap.h"
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 (!strcmp(getenv("console"), "comconsole"))
howto |= RB_SERIAL;
if (!strcmp(getenv("console"), "nullconsole"))
howto |= RB_MUTE;
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.
*/
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 = htobe32(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); \
}
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 powerpc 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;
vm_offset_t fdtp;
vm_offset_t size;
uint64_t scratch64;
uint32_t scratch32;
char *rootdevname;
int howto;
align = kern64 ? 8 : 4;
howto = htobe32(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);
/* Copy out FDT */
size = fdt_copy(addr);
*dtb = fdtp = addr;
addr = roundup(addr + size, PAGE_SIZE);
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 = htobe64(envp);
file_addmetadata(kfp, MODINFOMD_ENVP, sizeof scratch64, &scratch64);
scratch64 = htobe64(fdtp);
file_addmetadata(kfp, MODINFOMD_DTBP, sizeof scratch64, &scratch64);
scratch64 = htobe64(kernend);
file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof scratch64, &scratch64);
} else {
scratch32 = htobe32(envp);
file_addmetadata(kfp, MODINFOMD_ENVP, sizeof scratch32, &scratch32);
scratch32 = htobe32(fdtp);
file_addmetadata(kfp, MODINFOMD_DTBP, sizeof scratch32, &scratch32);
scratch32 = htobe32(kernend);
file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof scratch32, &scratch32);
}
*modulep = addr;
size = md_copymodules(0, kern64);
kernend = roundup(addr + size, PAGE_SIZE);
md = file_findmetadata(kfp, MODINFOMD_KERNEND);
if (kern64) {
scratch64 = htobe64(kernend);
bcopy(&scratch64, md->md_data, sizeof scratch64);
} else {
bcopy(&kernend, md->md_data, sizeof kernend);
}
(void)md_copymodules(addr, kern64);
return(0);
}
int
md_load(char *args, vm_offset_t *modulep, vm_offset_t *dtb)
{
return (md_load_dual(args, modulep, dtb, 0));
}
int
md_load64(char *args, vm_offset_t *modulep, vm_offset_t *dtb)
{
return (md_load_dual(args, modulep, dtb, 1));
}

2
stand/powerpc/ofw/Makefile
View file

@ -17,7 +17,7 @@ NEWVERSWHAT= "Open Firmware loader" ${MACHINE_ARCH}
INSTALLFLAGS= -b
# Architecture-specific loader code
SRCS= conf.c metadata.c vers.c start.c
SRCS= conf.c vers.c start.c
SRCS+= ucmpdi2.c
.include "${BOOTSRC}/fdt.mk"

2
stand/sparc64/loader/Makefile
View file

@ -21,7 +21,7 @@ INSTALLFLAGS= -b
# Architecture-specific loader code
.PATH: ${BOOTSRC}/sparc64/loader
SRCS= locore.S main.c metadata.c vers.c
SRCS= locore.S main.c vers.c
.if ${LOADER_DEBUG} == "yes"
CFLAGS+= -DLOADER_DEBUG

345
stand/sparc64/loader/metadata.c
View file

@ -1,345 +0,0 @@
/*-
* 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/i386/libi386/bootinfo.c,v 1.29
*/
#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>
#include <machine/metadata.h>
#include "bootstrap.h"
#include "libofw.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);
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 (md_bootserial() != -1)
howto |= RB_SERIAL;
return(howto);
}
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);
}
/*
* 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
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
*/
#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, sizeof(u_long));\
}
#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), sizeof(u_long)); \
}
#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, sizeof(u_long)); \
}
#define MOD_END(a, c) { \
COPY32(MODINFO_END, a, c); \
COPY32(0, a, c); \
}
vm_offset_t
md_copymodules(vm_offset_t addr)
{
struct preloaded_file *fp;
struct file_metadata *md;
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);
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 sparc64 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.
*/
vm_offset_t
md_load(char *args, vm_offset_t *modulep, vm_offset_t *dtbp)
{
struct preloaded_file *kfp;
struct preloaded_file *xp;
struct file_metadata *md;
vm_offset_t kernend;
vm_offset_t addr;
vm_offset_t envp;
vm_offset_t size;
char *rootdevname;
int howto;
howto = md_getboothowto(args);
*dtbp = 0;
/*
* 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.
*/
if ((rootdevname = getenv("rootdev")) == NULL)
rootdevname = getenv("currdev");
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);
kernend = 0;
kfp = file_findfile(NULL, "elf64 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);
file_addmetadata(kfp, MODINFOMD_ENVP, sizeof envp, &envp);
file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof kernend, &kernend);
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);
*modulep = addr;
size = md_copymodules(0);
kernend = roundup(addr + size, PAGE_SIZE);
md = file_findmetadata(kfp, MODINFOMD_KERNEND);
bcopy(&kernend, md->md_data, sizeof kernend);
(void)md_copymodules(addr);
return(0);
}

5
stand/uboot.mk
View file

@ -1,6 +1,6 @@
# $FreeBSD$
SRCS+= main.c metadata.c
SRCS+= main.c
.PATH: ${UBOOTSRC}/common
@ -10,6 +10,9 @@ CFLAGS+= -I${UBOOTSRC}/common
LIBUBOOT= ${BOOTOBJ}/uboot/lib/libuboot.a
CFLAGS+= -I${UBOOTSRC}/lib
CFLAGS+= -I${BOOTOBJ}/uboot/lib
.if ${MACHINE_CPUARCH} == "arm"
SRCS+= metadata.c
.endif
.include "${BOOTSRC}/fdt.mk"

366
stand/uboot/common/metadata.c
View file

@ -1,366 +0,0 @@
/*-
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
* Copyright (C) 2006 Semihalf, Piotr Kruszynski <ppk@semihalf.com>
* Copyright (C) 2007-2008 Semihalf, Rafal Jaworowski <raj@semihalf.com>
* 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.
*/
#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>
#include <machine/elf.h>
#include <machine/metadata.h>
#include "api_public.h"
#include "bootstrap.h"
#include "glue.h"
#if defined(LOADER_FDT_SUPPORT)
#include <fdt_platform.h>
#endif
static int
md_getboothowto(char *kargs)
{
char *cp;
char *p;
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 ((p = getenv("console"))) {
if (!strcmp(p, "comconsole"))
howto |= RB_SERIAL;
if (!strcmp(p, "nullconsole"))
howto |= RB_MUTE;
}
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
*/
#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, sizeof(u_long));\
}
#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), sizeof(u_long)); \
}
#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, sizeof(u_long)); \
}
#define MOD_END(a, c) { \
COPY32(MODINFO_END, a, c); \
COPY32(0, a, c); \
}
static vm_offset_t
md_copymodules(vm_offset_t addr)
{
struct preloaded_file *fp;
struct file_metadata *md;
int c;
vm_offset_t a;
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 be first */
MOD_TYPE(addr, fp->f_type, c);
if (fp->f_args)
MOD_ARGS(addr, fp->f_args, c);
a = fp->f_addr - __elfN(relocation_offset);
MOD_ADDR(addr, a, 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(char *args, vm_offset_t *modulep)
{
struct preloaded_file *kfp, *bfp;
struct preloaded_file *xp;
struct file_metadata *md;
struct bootinfo *bip;
vm_offset_t kernend;
vm_offset_t addr;
vm_offset_t envp;
vm_offset_t size;
vm_offset_t vaddr;
#if defined(LOADER_FDT_SUPPORT)
vm_offset_t dtbp;
int dtb_size;
#endif
char *rootdevname;
int howto;
int i;
/*
* These metadata addreses must be converted for kernel after
* relocation.
*/
uint32_t mdt[] = {
MODINFOMD_SSYM, MODINFOMD_ESYM, MODINFOMD_KERNEND,
MODINFOMD_ENVP,
#if defined(LOADER_FDT_SUPPORT)
MODINFOMD_DTBP
#endif
};
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)
/* Handle device tree blob */
dtbp = addr;
dtb_size = fdt_copy(addr);
/* Pad to a page boundary */
if (dtb_size)
addr += roundup(dtb_size, PAGE_SIZE);
#endif
kernend = 0;
kfp = file_findfile(NULL, "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);
file_addmetadata(kfp, MODINFOMD_ENVP, sizeof envp, &envp);
#if defined(LOADER_FDT_SUPPORT)
if (dtb_size)
file_addmetadata(kfp, MODINFOMD_DTBP, sizeof dtbp, &dtbp);
else
pager_output("WARNING! Trying to fire up the kernel, but no "
"device tree blob found!\n");
#endif
file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof kernend, &kernend);
/* Figure out the size and location of the metadata */
*modulep = addr;
size = md_copymodules(0);
kernend = roundup(addr + size, PAGE_SIZE);
/* Provide MODINFOMD_KERNEND */
md = file_findmetadata(kfp, MODINFOMD_KERNEND);
bcopy(&kernend, md->md_data, sizeof kernend);
/* Convert addresses to the final VA */
*modulep -= __elfN(relocation_offset);
/* Do relocation fixup on metadata of each module. */
for (xp = file_findfile(NULL, NULL); xp != NULL; xp = xp->f_next) {
for (i = 0; i < nitems(mdt); i++) {
md = file_findmetadata(xp, mdt[i]);
if (md) {
bcopy(md->md_data, &vaddr, sizeof vaddr);
vaddr -= __elfN(relocation_offset);
bcopy(&vaddr, md->md_data, sizeof vaddr);
}
}
}
/* Only now copy actual modules and metadata */
(void)md_copymodules(addr);
return (0);
}

4
stand/uboot/lib/elf_freebsd.c
View file

@ -44,7 +44,7 @@ __FBSDID("$FreeBSD$");
#include "bootstrap.h"
#include "libuboot.h"
extern vm_offset_t md_load(char *, vm_offset_t *);
extern vm_offset_t md_load(char *, vm_offset_t *, vm_offset_t *);
int
__elfN(uboot_load)(char *filename, u_int64_t dest,
@ -81,7 +81,7 @@ __elfN(uboot_exec)(struct preloaded_file *fp)
e = (Elf_Ehdr *)&fmp->md_data;
if ((error = md_load(fp->f_args, &mdp)) != 0)
if ((error = md_load(fp->f_args, &mdp, NULL)) != 0)
return (error);
entry = (void *)e->e_entry;