[PATCH 4/5] libfreebsd: Port OFW to RTEMS
G S Niteesh Babu
niteesh.gs at gmail.com
Thu Jun 4 17:43:52 UTC 2020
The following files have been ported to RTEMS
1) openfirm.h
2) openfirm.c
3) ofw_fdt.c
---
cpukit/libfreebsd/dev/ofw/ofw_fdt.c | 117 ++++++++++++++++++++++++++-
cpukit/libfreebsd/dev/ofw/openfirm.c | 59 +++++++++++++-
cpukit/libfreebsd/dev/ofw/openfirm.h | 18 +++++
3 files changed, 191 insertions(+), 3 deletions(-)
diff --git a/cpukit/libfreebsd/dev/ofw/ofw_fdt.c b/cpukit/libfreebsd/dev/ofw/ofw_fdt.c
index e4f72e8142..5341440789 100644
--- a/cpukit/libfreebsd/dev/ofw/ofw_fdt.c
+++ b/cpukit/libfreebsd/dev/ofw/ofw_fdt.c
@@ -29,10 +29,13 @@
* SUCH DAMAGE.
*/
+#ifndef __rtems__
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
+#endif /* __rtems__ */
#include <sys/param.h>
+#ifndef __rtems__
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/systm.h>
@@ -45,9 +48,18 @@ __FBSDID("$FreeBSD$");
#include <dev/ofw/ofwvar.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus_subr.h>
+#endif /* __rtems__ */
#include "ofw_if.h"
-
+#ifdef __rtems__
+#include <rtems.h>
+#include <rtems/sysinit.h>
+#include <libfdt.h>
+#include <assert.h>
+#include "openfirm.h"
+#endif /* __rtems__ */
+
+#ifndef __rtems__
#ifdef DEBUG
#define debugf(fmt, args...) do { printf("%s(): ", __func__); \
printf(fmt,##args); } while (0)
@@ -63,6 +75,7 @@ __FBSDID("$FreeBSD$");
#define FDT_MARVELL
#endif
#endif
+#endif /* __rtems__ */
static int ofw_fdt_init(ofw_t, void *);
static phandle_t ofw_fdt_peer(ofw_t, phandle_t);
@@ -78,6 +91,7 @@ static ssize_t ofw_fdt_canon(ofw_t, const char *, char *, size_t);
static phandle_t ofw_fdt_finddevice(ofw_t, const char *);
static ssize_t ofw_fdt_instance_to_path(ofw_t, ihandle_t, char *, size_t);
static ssize_t ofw_fdt_package_to_path(ofw_t, phandle_t, char *, size_t);
+#ifndef __rtems__
static int ofw_fdt_interpret(ofw_t, const char *, int, cell_t *);
static ofw_method_t ofw_fdt_methods[] = {
@@ -104,9 +118,11 @@ static ofw_def_t ofw_fdt = {
0
};
OFW_DEF(ofw_fdt);
+#endif /* __rtems__ */
static void *fdtp = NULL;
+#ifndef __rtems__
static int
sysctl_handle_dtb(SYSCTL_HANDLER_ARGS)
{
@@ -127,6 +143,24 @@ sysctl_register_fdt_oid(void *arg)
sysctl_handle_dtb, "", "Device Tree Blob");
}
SYSINIT(dtb_oid, SI_SUB_KMEM, SI_ORDER_ANY, sysctl_register_fdt_oid, NULL);
+#else /* __rtems__ */
+const void* bsp_fdt_get(void);
+static void
+ofw_init(void)
+{
+ int rv;
+ const void *fdt;
+
+ fdt = bsp_fdt_get();
+ rv = ofw_fdt_init(NULL, fdt);
+ assert(rv == 0);
+}
+RTEMS_SYSINIT_ITEM(
+ ofw_init,
+ RTEMS_SYSINIT_BSP_START,
+ RTEMS_SYSINIT_ORDER_FIRST
+);
+#endif /* __rtems__ */
static int
ofw_fdt_init(ofw_t ofw, void *data)
@@ -297,7 +331,11 @@ ofw_fdt_getprop(ofw_t ofw, phandle_t package, const char *propname, void *buf,
if (prop == NULL)
return (-1);
+#ifndef __rtems__
bcopy(prop, buf, min(len, buflen));
+#else /* __rtems__ */
+ memcpy(buf, prop, MIN(len, buflen));
+#endif /* __rtems__ */
return (len);
}
@@ -407,6 +445,7 @@ ofw_fdt_package_to_path(ofw_t ofw, phandle_t package, char *buf, size_t len)
return (-1);
}
+#ifndef __rtems__
#if defined(FDT_MARVELL)
static int
ofw_fdt_fixup(ofw_t ofw)
@@ -476,4 +515,78 @@ ofw_fdt_interpret(ofw_t ofw, const char *cmd, int nret, cell_t *retvals)
#else
return (0);
#endif
-}
\ No newline at end of file
+}
+#endif /* __rtems__ */
+
+#ifdef __rtems__
+int OFW_INIT(ofw_t ofw_obj, void *cookie)
+{
+ return ofw_fdt_init(ofw_obj, cookie);
+}
+
+phandle_t OFW_PEER(ofw_t ofw_obj, phandle_t node)
+{
+ return ofw_fdt_peer(ofw_obj, node);
+}
+
+phandle_t OFW_CHILD(ofw_t ofw_obj, phandle_t node)
+{
+ return ofw_fdt_child(ofw_obj, node);
+}
+
+phandle_t OFW_PARENT(ofw_t ofw_obj, phandle_t node)
+{
+ return ofw_fdt_parent(ofw_obj, node);
+}
+
+phandle_t OFW_INSTANCE_TO_PACKAGE(ofw_t ofw_obj, ihandle_t instance)
+{
+ return ofw_fdt_instance_to_package(ofw_obj, instance);
+}
+
+ssize_t OFW_GETPROPLEN(ofw_t ofw_obj, phandle_t package, const char *propname)
+{
+ return ofw_fdt_getproplen(ofw_obj, package, propname);
+}
+
+ssize_t OFW_GETPROP(ofw_t ofw_obj, phandle_t package, const char *propname,
+ void *buf, size_t buflen
+)
+{
+ return ofw_fdt_getprop(ofw_obj, package, propname, buf, buflen);
+}
+
+int OFW_NEXTPROP(ofw_t ofw_obj, phandle_t package, const char *prev, char *buf,
+ size_t size)
+{
+ return ofw_fdt_nextprop(ofw_obj, package, prev, buf, size);
+}
+
+int OFW_SETPROP(ofw_t ofw_obj, phandle_t package, const char *propname,
+ const void *buf, size_t len)
+{
+ return ofw_fdt_setprop(ofw_obj, package, propname, buf, len);
+}
+
+ssize_t OFW_CANON(ofw_t ofw_obj, const char *device, char *buf, size_t len)
+{
+ return ofw_fdt_canon(ofw_obj, device, buf, len);
+}
+
+phandle_t OFW_FINDDEVICE(ofw_t ofw_obj, const char *device)
+{
+ return ofw_fdt_finddevice(ofw_obj, device);
+}
+
+ssize_t OFW_INSTANCE_TO_PATH(ofw_t ofw_obj, ihandle_t instance, char *buf,
+ size_t len)
+{
+ return ofw_fdt_instance_to_path(ofw_obj, instance, buf, len);
+}
+
+ssize_t OFW_PACKAGE_TO_PATH(ofw_t ofw_obj, phandle_t package, char *buf,
+ size_t len)
+{
+ return ofw_fdt_package_to_path(ofw_obj, package, buf, len);
+}
+#endif /* __rtems__ */
\ No newline at end of file
diff --git a/cpukit/libfreebsd/dev/ofw/openfirm.c b/cpukit/libfreebsd/dev/ofw/openfirm.c
index 50ebf2cf16..646c006e18 100644
--- a/cpukit/libfreebsd/dev/ofw/openfirm.c
+++ b/cpukit/libfreebsd/dev/ofw/openfirm.c
@@ -57,27 +57,39 @@
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+#ifndef __rtems__
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_platform.h"
+#endif /* __rtems__ */
#include <sys/param.h>
+#ifndef __rtems__
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/queue.h>
#include <sys/systm.h>
+#endif /* __rtems__ */
#include <sys/endian.h>
+#ifndef __rtems__
#include <machine/stdarg.h>
#include <dev/ofw/ofwvar.h>
#include <dev/ofw/openfirm.h>
+#endif /* __rtems__ */
#include "ofw_if.h"
+#ifdef __rtems__
+#include <assert.h>
+#include "openfirm.h"
+#include "../../rtems-freebsd-helper.h"
+#endif /* __rtems__ */
+#ifndef __rtems__
static void OF_putchar(int c, void *arg);
MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
@@ -85,7 +97,9 @@ MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
static ihandle_t stdout;
static ofw_def_t *ofw_def_impl = NULL;
+#endif /* __rtems__ */
static ofw_t ofw_obj;
+#ifndef __rtems__
static struct ofw_kobj ofw_kernel_obj;
static struct kobj_ops ofw_kernel_kops;
@@ -224,14 +238,18 @@ OF_install(char *name, int prio)
return (FALSE);
}
+#endif /* __rtems__ */
/* Initializer */
int
OF_init(void *cookie)
{
+#ifndef __rtems__
phandle_t chosen;
+#endif /* __rtems__ */
int rv;
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (-1);
@@ -242,17 +260,21 @@ OF_init(void *cookie)
*/
kobj_class_compile_static(ofw_def_impl, &ofw_kernel_kops);
kobj_init_static((kobj_t)ofw_obj, ofw_def_impl);
+#endif /* __rtems__ */
rv = OFW_INIT(ofw_obj, cookie);
+#ifndef __rtems__
if ((chosen = OF_finddevice("/chosen")) != -1)
if (OF_getencprop(chosen, "stdout", &stdout,
sizeof(stdout)) == -1)
stdout = -1;
+#endif /* __rtems__ */
return (rv);
}
+#ifndef __rtems__
static void
OF_putchar(int c, void *arg __unused)
{
@@ -314,6 +336,7 @@ OF_interpret(const char *cmd, int nreturns, ...)
return (status);
}
+#endif /* __rtems__ */
/*
* Device tree functions
@@ -324,8 +347,10 @@ phandle_t
OF_peer(phandle_t node)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (0);
+#endif /* __rtems__ */
return (OFW_PEER(ofw_obj, node));
}
@@ -335,8 +360,10 @@ phandle_t
OF_child(phandle_t node)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (0);
+#endif /* __rtems__ */
return (OFW_CHILD(ofw_obj, node));
}
@@ -346,8 +373,10 @@ phandle_t
OF_parent(phandle_t node)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (0);
+#endif /* __rtems__ */
return (OFW_PARENT(ofw_obj, node));
}
@@ -357,8 +386,10 @@ phandle_t
OF_instance_to_package(ihandle_t instance)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (-1);
+#endif /* __rtems__ */
return (OFW_INSTANCE_TO_PACKAGE(ofw_obj, instance));
}
@@ -368,8 +399,10 @@ ssize_t
OF_getproplen(phandle_t package, const char *propname)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (-1);
+#endif /* __rtems__ */
return (OFW_GETPROPLEN(ofw_obj, package, propname));
}
@@ -387,8 +420,10 @@ ssize_t
OF_getprop(phandle_t package, const char *propname, void *buf, size_t buflen)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (-1);
+#endif /* __rtems__ */
return (OFW_GETPROP(ofw_obj, package, propname, buf, buflen));
}
@@ -532,8 +567,10 @@ int
OF_nextprop(phandle_t package, const char *previous, char *buf, size_t size)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (-1);
+#endif /* __rtems__ */
return (OFW_NEXTPROP(ofw_obj, package, previous, buf, size));
}
@@ -543,8 +580,10 @@ int
OF_setprop(phandle_t package, const char *propname, const void *buf, size_t len)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (-1);
+#endif /* __rtems__ */
return (OFW_SETPROP(ofw_obj, package, propname, buf,len));
}
@@ -554,8 +593,10 @@ ssize_t
OF_canon(const char *device, char *buf, size_t len)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (-1);
+#endif /* __rtems__ */
return (OFW_CANON(ofw_obj, device, buf, len));
}
@@ -565,8 +606,10 @@ phandle_t
OF_finddevice(const char *device)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (-1);
+#endif /* __rtems__ */
return (OFW_FINDDEVICE(ofw_obj, device));
}
@@ -576,8 +619,10 @@ ssize_t
OF_instance_to_path(ihandle_t instance, char *buf, size_t len)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (-1);
+#endif /* __rtems__ */
return (OFW_INSTANCE_TO_PATH(ofw_obj, instance, buf, len));
}
@@ -587,8 +632,10 @@ ssize_t
OF_package_to_path(phandle_t package, char *buf, size_t len)
{
+#ifndef __rtems__
if (ofw_def_impl == NULL)
return (-1);
+#endif /* __rtems__ */
return (OFW_PACKAGE_TO_PATH(ofw_obj, package, buf, len));
}
@@ -626,14 +673,18 @@ OF_child_xref_phandle(phandle_t parent, phandle_t xref)
phandle_t
OF_node_from_xref(phandle_t xref)
{
+#ifndef __rtems__
struct xrefinfo *xi;
+#endif /* __rtems__ */
phandle_t node;
+#ifndef __rtems__
if (xref_init_done) {
if ((xi = xrefinfo_find(xref, FIND_BY_XREF)) == NULL)
return (xref);
return (xi->node);
}
+#endif /* __rtems__ */
if ((node = OF_child_xref_phandle(OF_peer(0), xref)) == -1)
return (xref);
@@ -643,14 +694,18 @@ OF_node_from_xref(phandle_t xref)
phandle_t
OF_xref_from_node(phandle_t node)
{
+#ifndef __rtems__
struct xrefinfo *xi;
+#endif /* __rtems__ */
phandle_t xref;
+#ifndef __rtems__
if (xref_init_done) {
if ((xi = xrefinfo_find(node, FIND_BY_NODE)) == NULL)
return (node);
return (xi->xref);
}
+#endif /* __rtems__ */
if (OF_getencprop(node, "phandle", &xref, sizeof(xref)) == -1 &&
OF_getencprop(node, "ibm,phandle", &xref, sizeof(xref)) == -1 &&
@@ -659,6 +714,7 @@ OF_xref_from_node(phandle_t node)
return (xref);
}
+#ifndef __rtems__
device_t
OF_device_from_xref(phandle_t xref)
{
@@ -845,4 +901,5 @@ OF_exit()
for (;;) /* just in case */
;
-}
\ No newline at end of file
+}
+#endif /* __rtems__ */
\ No newline at end of file
diff --git a/cpukit/libfreebsd/dev/ofw/openfirm.h b/cpukit/libfreebsd/dev/ofw/openfirm.h
index 74a7075367..00c0d4dd88 100644
--- a/cpukit/libfreebsd/dev/ofw/openfirm.h
+++ b/cpukit/libfreebsd/dev/ofw/openfirm.h
@@ -63,7 +63,13 @@
#define _DEV_OPENFIRM_H_
#include <sys/types.h>
+#ifndef __rtems__
#include <machine/_bus.h>
+#else /* __rtems__ */
+#include <rtems.h>
+#include <libfdt.h>
+#include "../../rtems-freebsd-helper.h"
+#endif /* __rtems__ */
/*
* Prototypes for Open Firmware Interface Routines
@@ -73,7 +79,12 @@ typedef uint32_t ihandle_t;
typedef uint32_t phandle_t;
typedef uint32_t pcell_t;
+#ifdef __rtems__
+typedef uint32_t cell_t;
+#endif /* __rtems__ */
+
#ifdef _KERNEL
+#ifndef __rtems__
#include <sys/malloc.h>
#include <machine/ofw_machdep.h>
@@ -86,8 +97,10 @@ MALLOC_DECLARE(M_OFWPROP);
*/
boolean_t OF_install(char *name, int prio);
+#endif /* __rtems__*/
int OF_init(void *cookie);
+#ifndef __rtems__
/*
* Known Open Firmware interface names
*/
@@ -100,6 +113,7 @@ int OF_init(void *cookie);
/* Generic functions */
int OF_test(const char *name);
void OF_printf(const char *fmt, ...);
+#endif /* __rtems__ */
/* Device tree functions */
phandle_t OF_peer(phandle_t node);
@@ -141,6 +155,7 @@ ssize_t OF_package_to_path(phandle_t node, char *buf, size_t len);
phandle_t OF_node_from_xref(phandle_t xref);
phandle_t OF_xref_from_node(phandle_t node);
+#ifndef __rtems__
/*
* When properties contain references to other nodes using xref handles it is
* often necessary to use interfaces provided by the driver for the referenced
@@ -158,9 +173,11 @@ void OF_close(ihandle_t instance);
ssize_t OF_read(ihandle_t instance, void *buf, size_t len);
ssize_t OF_write(ihandle_t instance, const void *buf, size_t len);
int OF_seek(ihandle_t instance, uint64_t where);
+#endif /* __rtems__ */
phandle_t OF_instance_to_package(ihandle_t instance);
ssize_t OF_instance_to_path(ihandle_t instance, char *buf, size_t len);
+#ifndef __rtems__
int OF_call_method(const char *method, ihandle_t instance,
int nargs, int nreturns, ...);
@@ -183,5 +200,6 @@ int OF_interpret(const char *cmd, int nreturns, ...);
int OF_decode_addr(phandle_t dev, int regno, bus_space_tag_t *ptag,
bus_space_handle_t *phandle, bus_size_t *sz);
+#endif /* __rtems__ */
#endif /* _KERNEL */
#endif /* _DEV_OPENFIRM_H_ */
\ No newline at end of file
--
2.17.1
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