|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [XenPPC] [hack] dynamic device tree generation
I just got dynamic device tree stuff working. I mean, it's full of
hacks, but should be enough to get an initrd (which is why I'm posting
it). Patch is below (I'm not even going to check it in to
xenppc-unstable.hg it's so bad).
With it, I get this console output:
xen_start_info at c000000003ffc000
magic xen-3.0-powerpc64HV
flags 0
shared_info 3fff000, c000000003fff000
store_mfn 3ffe
store_evtchn 1
console_mfn 3ffd
console_evtchn 2
Hello World I'm Maple Xen-LPAR!
<- xen_init_early
firmware_features = 0x40000a
Using Xen-Maple machine description
...
However, despite many many reinstallations of the tools, my output still
ceases after about a pageful. strace on xenconsoled reveals:
Process 1149 attached - interrupt to quit
*** here I hit "enter" in the "xm console" ***
select(20, [16 18 19], [], NULL, NULL) = 1 (in [19])
read(19, "\r", 80) = 1
mlock(0xffcfa7c0, 136) = 0
ioctl(5, SNDCTL_DSP_RESET, 0xffcfa760) = 0
munlock(0xffcfa7c0, 136) = 0
ioctl(18, EVIOCGKEYCODE or EVIOCSKEYCODE, 0xffcfa8b8) = 0
select(20, [16 18 19], [], NULL, NULL) = 1 (in [18])
read(18, "\0\0\0\n", 4) = 4
write(18, "\0\0\0\n", 4) = 4
select(20, [16 18 19], [], NULL, NULL
Maybe it's not an event channel problem after all, but rather a console
selection problem. Anyways.
diff -r da6be38bfdb1 tools/libxc/powerpc64/Makefile
--- a/tools/libxc/powerpc64/Makefile Tue Aug 08 20:57:09 2006 -0500
+++ b/tools/libxc/powerpc64/Makefile Tue Aug 08 20:57:24 2006 -0500
@@ -1,1 +1,2 @@ GUEST_SRCS-y += powerpc64/xc_linux_build
GUEST_SRCS-y += powerpc64/xc_linux_build.c
+GUEST_SRCS-y += powerpc64/ft_build.c
diff -r da6be38bfdb1 tools/libxc/powerpc64/xc_linux_build.c
--- a/tools/libxc/powerpc64/xc_linux_build.c Tue Aug 08 20:57:09 2006 -0500
+++ b/tools/libxc/powerpc64/xc_linux_build.c Tue Aug 08 23:12:20 2006 -0500
@@ -33,9 +33,10 @@
#include <xg_private.h>
#include <xenctrl.h>
-/* XXX 64M hack */
-#define MEMSIZE (64UL << 20)
+#include "ft_build.h"
+
#define INITRD_ADDR (24UL << 20)
+#define DEVTREE_ADDR (16UL << 20)
#define ALIGN_UP(addr,size) (((addr)+((size)-1))&(~((size)-1)))
@@ -92,8 +93,8 @@ static int init_boot_vcpu(
int xc_handle,
int domid,
struct domain_setup_info *dsi,
- unsigned long dtb,
- unsigned long kaddr)
+ unsigned long devtree_addr,
+ unsigned long kern_addr)
{
vcpu_guest_context_t ctxt;
int rc;
@@ -102,8 +103,8 @@ static int init_boot_vcpu(
ctxt.user_regs.pc = dsi->v_kernentry;
ctxt.user_regs.msr = 0;
ctxt.user_regs.gprs[1] = 0; /* Linux uses its own stack */
- ctxt.user_regs.gprs[3] = dtb;
- ctxt.user_regs.gprs[4] = kaddr;
+ ctxt.user_regs.gprs[3] = devtree_addr;
+ ctxt.user_regs.gprs[4] = kern_addr;
ctxt.user_regs.gprs[5] = 0;
/* There is a buggy kernel that does not zero the "local_paca", so
* we must make sure this register is 0 */
@@ -157,30 +158,85 @@ static int install_image(
return rc;
}
-/* XXX be more flexible about placement in memory */
-static int load_dtb(
+static int load_devtree(
int xc_handle,
int domid,
- const char *dtb_path,
- unsigned long dtb_addr,
- struct domain_setup_info *dsi,
- xen_pfn_t *page_array)
-{
- uint8_t *img;
- unsigned long dtb_size;
+ xen_pfn_t *page_array,
+ void *devtree,
+ unsigned long devtree_addr,
+ unsigned long initrd_base,
+ unsigned long initrd_len,
+ start_info_t *si,
+ unsigned long si_addr)
+{
+ uint32_t start_info[4] = {0, si_addr, 0, 0x1000};
+ struct boot_param_header *header;
+ uint64_t *prop;
+ unsigned int devtree_size;
+ unsigned int proplen;
int rc = 0;
- img = load_file(dtb_path, &dtb_size);
- if (img == NULL) {
- rc = -1;
- goto out;
- }
-
- DPRINTF("copying device tree to 0x%lx[0x%lx]\n", dtb_addr, dtb_size);
- rc = install_image(xc_handle, domid, page_array, img, dtb_addr, dtb_size);
-
-out:
- free(img);
+ header = devtree;
+ devtree_size = header->totalsize;
+
+ DPRINTF("adding initrd props\n");
+ prop = ft_get_prop(devtree, "/chosen/linux,initrd-start", &proplen);
+ if ((prop == NULL) || (proplen != sizeof(*prop))) {
+ DPRINTF("couldn't set linux,initrd-start property\n");
+ return -1;
+ }
+ *prop = initrd_base;
+
+ prop = ft_get_prop(devtree, "/chosen/linux,initrd-end", &proplen);
+ if ((prop == NULL) || (proplen != sizeof(*prop))) {
+ DPRINTF("couldn't set linux,initrd-end property\n");
+ return -1;
+ }
+ *prop = initrd_base + initrd_len;
+
+#if 0
+ prop = ft_get_prop(devtree, "/xen/console/frameno", &proplen);
+ if ((prop == NULL) || (proplen != sizeof(*prop))) {
+ DPRINTF("couldn't set /xen/console/frameno property\n");
+ return -1;
+ }
+ *prop = si->console_mfn;
+
+ prop = ft_get_prop(devtree, "/xen/console/interrupts", &proplen);
+ if ((prop == NULL) || (proplen != sizeof(interrupts))) {
+ DPRINTF("couldn't set /xen/console/interrupts property\n");
+ return -1;
+ }
+ interrupts[0] = si->console_evtchn;
+ memcpy(prop, interrupts, proplen);
+
+ prop = ft_get_prop(devtree, "/xen/store/frameno", &proplen);
+ if ((prop == NULL) || (proplen != sizeof(*prop))) {
+ DPRINTF("couldn't set /xen/store/frameno property\n");
+ return -1;
+ }
+ *prop = si->store_mfn;
+
+ prop = ft_get_prop(devtree, "/xen/store/interrupts", &proplen);
+ if ((prop == NULL) || (proplen != sizeof(interrupts))) {
+ DPRINTF("couldn't set /xen/store/interrupts property\n");
+ return -1;
+ }
+ interrupts[0] = si->store_evtchn;
+ memcpy(prop, interrupts, proplen);
+#endif
+
+ prop = ft_get_prop(devtree, "/xen/start-info", &proplen);
+ if ((prop == NULL) || (proplen != sizeof(start_info))) {
+ DPRINTF("couldn't set /xen/start-info property\n");
+ return -1;
+ }
+ memcpy(prop, start_info, proplen);
+
+ DPRINTF("copying device tree to 0x%lx[0x%x]\n", DEVTREE_ADDR,
devtree_size);
+ rc = install_image(xc_handle, domid, page_array, devtree, DEVTREE_ADDR,
+ devtree_size);
+
return rc;
}
@@ -295,49 +351,53 @@ out:
}
static unsigned long create_start_info(start_info_t *si,
- unsigned int console_evtchn, unsigned int store_evtchn)
-{
- unsigned long eomem;
+ unsigned int console_evtchn, unsigned int store_evtchn,
+ unsigned long nr_pages)
+{
unsigned long si_addr;
memset(si, 0, sizeof(*si));
snprintf(si->magic, sizeof(si->magic), "xen-%d.%d-powerpc64HV", 3, 0);
- eomem = MEMSIZE;
- si->nr_pages = eomem >> PAGE_SHIFT;
- si->shared_info = eomem - (PAGE_SIZE * 1);
+ si->nr_pages = nr_pages;
+ si->shared_info = (nr_pages - 1) << PAGE_SHIFT;
si->store_mfn = si->nr_pages - 2;
si->store_evtchn = store_evtchn;
si->console_mfn = si->nr_pages - 3;
si->console_evtchn = console_evtchn;
- si_addr = eomem - (PAGE_SIZE * 4);
+ si_addr = (nr_pages - 4) << PAGE_SHIFT;
return si_addr;
}
-static int get_page_array(int xc_handle, int domid, xen_pfn_t **page_array)
-{
- int nr_pages;
+static int get_page_array(int xc_handle, int domid, xen_pfn_t **page_array,
+ unsigned long *nr_pages)
+{
int rc;
DPRINTF("xc_get_tot_pages\n");
- nr_pages = xc_get_tot_pages(xc_handle, domid);
- DPRINTF(" 0x%x\n", nr_pages);
-
- *page_array = malloc(nr_pages * sizeof(xen_pfn_t));
+ *nr_pages = xc_get_tot_pages(xc_handle, domid);
+ DPRINTF(" 0x%lx\n", *nr_pages);
+
+ *page_array = malloc(*nr_pages * sizeof(xen_pfn_t));
if (*page_array == NULL) {
perror("malloc");
return -1;
}
DPRINTF("xc_get_pfn_list\n");
- rc = xc_get_pfn_list(xc_handle, domid, *page_array, nr_pages);
- if (rc != nr_pages) {
+ rc = xc_get_pfn_list(xc_handle, domid, *page_array, *nr_pages);
+ if (rc != *nr_pages) {
perror("Could not get the page frame list");
return -1;
}
return 0;
+}
+
+static void free_page_array(xen_pfn_t *page_array)
+{
+ free(page_array);
}
@@ -352,57 +412,69 @@ int xc_linux_build(int xc_handle,
unsigned int store_evtchn,
unsigned long *store_mfn,
unsigned int console_evtchn,
- unsigned long *console_mfn)
-{
+ unsigned long *console_mfn,
+ void *devtree)
+{
+ start_info_t si;
struct domain_setup_info dsi;
xen_pfn_t *page_array = NULL;
+ unsigned long nr_pages;
+ unsigned long devtree_addr = 0;
unsigned long kern_addr;
- unsigned long dtb_addr;
- unsigned long si_addr;
unsigned long initrd_base = 0;
unsigned long initrd_len = 0;
- start_info_t si;
+ unsigned long si_addr;
int rc = 0;
- if (get_page_array(xc_handle, domid, &page_array)) {
- rc = -1;
- goto out;
- }
-
+ DPRINTF("%s\n", __func__);
+
+ if (get_page_array(xc_handle, domid, &page_array, &nr_pages)) {
+ rc = -1;
+ goto out;
+ }
+
+ DPRINTF("loading image '%s'\n", image_name);
if (load_kernel(xc_handle, domid, image_name, &dsi, page_array)) {
rc = -1;
goto out;
}
kern_addr = 0;
- if (initrd_name && initrd_name[0] != '\0' &&
- load_initrd(xc_handle, domid, page_array, initrd_name, &initrd_base,
- &initrd_len)) {
- rc = -1;
- goto out;
- }
- /* XXX install initrd addr/len into device tree */
-
- dtb_addr = (16 << 20);
- if (load_dtb(xc_handle, domid, "/root/DomU.dtb", dtb_addr, &dsi,
page_array)) {
- dtb_addr = 0;
- }
-
- si_addr = create_start_info(&si, console_evtchn, store_evtchn);
+ if (initrd_name && initrd_name[0] != '\0') {
+ DPRINTF("loading initrd '%s'\n", initrd_name);
+ if (load_initrd(xc_handle, domid, page_array, initrd_name,
+ &initrd_base, &initrd_len)) {
+ rc = -1;
+ goto out;
+ }
+ }
+
+ /* start_info stuff: about to be removed */
+ si_addr = create_start_info(&si, console_evtchn, store_evtchn, nr_pages);
*console_mfn = page_array[si.console_mfn];
*store_mfn = page_array[si.store_mfn];
-
if (install_image(xc_handle, domid, page_array, &si, si_addr,
sizeof(start_info_t))) {
rc = -1;
goto out;
}
- if (init_boot_vcpu(xc_handle, domid, &dsi, dtb_addr, kern_addr)) {
+ if (devtree) {
+ DPRINTF("loading flattened device tree\n");
+ devtree_addr = DEVTREE_ADDR;
+ if (load_devtree(xc_handle, domid, page_array, devtree, devtree_addr,
+ initrd_base, initrd_len, &si, si_addr)) {
+ DPRINTF("couldn't load flattened device tree.\n");
+ devtree_addr = 0;
+ }
+ }
+
+ if (init_boot_vcpu(xc_handle, domid, &dsi, devtree_addr, kern_addr)) {
rc = -1;
goto out;
}
out:
- return rc;
-}
+ free_page_array(page_array);
+ return rc;
+}
diff -r da6be38bfdb1 tools/python/xen/lowlevel/xc/xc.c
--- a/tools/python/xen/lowlevel/xc/xc.c Tue Aug 08 20:57:09 2006 -0500
+++ b/tools/python/xen/lowlevel/xc/xc.c Tue Aug 08 22:35:01 2006 -0500
@@ -332,6 +332,7 @@ static PyObject *pyxc_linux_build(XcObje
unsigned long store_mfn = 0;
unsigned long console_mfn = 0;
void *arch_args = NULL;
+ int unused;
static char *kwd_list[] = { "dom", "store_evtchn",
"console_evtchn", "image",
@@ -339,18 +340,19 @@ static PyObject *pyxc_linux_build(XcObje
"ramdisk", "cmdline", "flags",
"features", "arch_args", NULL };
- if ( !PyArg_ParseTupleAndKeywords(args, kwds, "iiis|ssiss", kwd_list,
+ if ( !PyArg_ParseTupleAndKeywords(args, kwds, "iiis|ssiss#", kwd_list,
&dom, &store_evtchn,
&console_evtchn, &image,
/* optional */
&ramdisk, &cmdline, &flags,
- &features, &arch_args) )
+ &features, &arch_args, &unused) )
return NULL;
if ( xc_linux_build(self->xc_handle, dom, image,
ramdisk, cmdline, features, flags,
store_evtchn, &store_mfn,
- console_evtchn, &console_mfn, arch_args) != 0 ) {
+ console_evtchn, &console_mfn,
+ arch_args) != 0 ) {
if (!errno)
errno = EINVAL;
return PyErr_SetFromErrno(xc_error);
diff -r da6be38bfdb1 tools/python/xen/xend/image.py
--- a/tools/python/xen/xend/image.py Tue Aug 08 20:57:09 2006 -0500
+++ b/tools/python/xen/xend/image.py Tue Aug 08 23:01:29 2006 -0500
@@ -96,6 +96,70 @@ class ImageHandler:
("image/cmdline", self.cmdline),
("image/ramdisk", self.ramdisk))
+ # XXX
+ import xen.xend.dtc as dtc
+ root = dtc.Tree()
+ root.reserve(0x3ffc000, 0x4000)
+
+ root.addprop('device_type', 'chrp-but-not-really\0')
+ root.addprop('#size-cells', 2)
+ root.addprop('#address-cells', 2)
+ root.addprop('model', 'Momentum,Maple-D\0')
+ root.addprop('compatible', 'Momentum,Maple\0')
+
+ xen = root.addnode('xen')
+ xen.addprop('start-info', 0, 0, 0, 0)
+ xen.addprop('version', 'Xen-3.0-unstable\0')
+ xen.addprop('reg', 0, self.vm.getDomid(), 0, 0)
+ xen.addprop('domain-name', 'User Domain\0')
+ xencons = xen.addnode('console')
+ xencons.addprop('interrupts', 0, 0)
+
+ mem = root.addnode('memory')
+ mem.addprop('reg', 0, 0, 0, 0x4000000)
+ mem.addprop('device_type', 'memory\0')
+
+ cpus = root.addnode('cpus')
+ cpus.addprop('smp-enabled')
+ cpus.addprop('#size-cells', 0)
+ cpus.addprop('#address-cells', 1)
+
+ cpu0 = cpus.addnode('PowerPC,970@0')
+ cpu0.addprop('ibm,pft-size', 0, 0x14)
+ cpu0.addprop('reg', 0)
+ cpu0.addprop('cpu#', 0)
+ cpu0.addprop('device_type', 'cpu\0')
+ cpu0.addprop('d-cache-size', 0x8000)
+ cpu0.addprop('d-cache-line-size', 0x80)
+ cpu0.addprop('d-cache-sets', 0x80)
+ cpu0.addprop('i-cache-size', 0x10000)
+ cpu0.addprop('i-cache-line-size', 0x80)
+ cpu0.addprop('i-cache-sets', 0x200)
+ cpu0.addprop('clock-frequency', 'SrN\0')
+ cpu0.addprop('timebase-frequency', 0xa6e49c0)
+ cpu0.addprop('timebases-in-sync')
+
+ l2 = cpu0.addnode('l2-cache')
+ l2.addprop('name', 'l2-cache\0')
+ l2.addprop('device_type', 'cache\0')
+ l2.addprop('i-cache-size', 0x80000)
+ l2.addprop('d-cache-size', 0x80000)
+ l2.addprop('i-cache-sets', 0x200)
+ l2.addprop('d-cache-sets', 0x200)
+ l2.addprop('cache-unified')
+
+ chosen = root.addnode('chosen')
+ chosen.addprop('linux,platform', 0x501)
+ chosen.addprop('linux,stdout-path', '/xen/console\0')
+ chosen.addprop('interrupt-controller', xen.get_phandle())
+ chosen.addprop('bootargs', '\0')
+ chosen.addprop('linux,initrd-start', 0, 0)
+ chosen.addprop('linux,initrd-end', 0, 0)
+
+ self.tree = root.to_bin()
+ dtc.writebuf("/tmp/domU.dtb", self.tree);
+ # XXX
+
def cleanupBootloading(self):
self.unlink(self.kernel)
@@ -182,6 +246,8 @@ class LinuxImageHandler(ImageHandler):
log.debug("ramdisk = %s", self.ramdisk)
log.debug("vcpus = %d", self.vm.getVCpuCount())
log.debug("features = %s", self.vm.getFeatures())
+ # XXX
+ log.debug("tree len = %s", len(self.tree))
return xc.linux_build(dom = self.vm.getDomid(),
image = self.kernel,
@@ -189,7 +255,8 @@ class LinuxImageHandler(ImageHandler):
console_evtchn = console_evtchn,
cmdline = self.cmdline,
ramdisk = self.ramdisk,
- features = self.vm.getFeatures())
+ features = self.vm.getFeatures(),
+ arch_args = self.tree)
class HVMImageHandler(ImageHandler):
diff -r da6be38bfdb1 tools/libxc/powerpc64/ft_build.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/powerpc64/ft_build.c Tue Aug 08 11:22:58 2006 -0500
@@ -0,0 +1,651 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <stddef.h>
+#include <string.h>
+#include <stdio.h>
+#include <asm/errno.h>
+
+#include "ft_build.h"
+
+#define _ALIGN(addr,size) (((addr)+(size)-1)&(~((size)-1)))
+
+static void ft_put_word(struct ft_cxt *cxt, u32 v)
+{
+ if (cxt->overflow) /* do nothing */
+ return;
+
+ /* check for overflow */
+ if (cxt->p + 4 > cxt->pstr) {
+ cxt->overflow = 1;
+ return;
+ }
+
+ *(u32 *) cxt->p = cpu_to_be32(v);
+ cxt->p += 4;
+}
+
+static inline void ft_put_bin(struct ft_cxt *cxt, const void *data, int sz)
+{
+ char *p;
+
+ if (cxt->overflow) /* do nothing */
+ return;
+
+ /* next pointer pos */
+ p = (char *) _ALIGN((unsigned long)cxt->p + sz, 4);
+
+ /* check for overflow */
+ if (p > cxt->pstr) {
+ cxt->overflow = 1;
+ return;
+ }
+
+ memcpy(cxt->p, data, sz);
+ if ((sz & 3) != 0)
+ memset(cxt->p + sz, 0, 4 - (sz & 3));
+ cxt->p = p;
+}
+
+void ft_begin_node(struct ft_cxt *cxt, const char *name)
+{
+ ft_put_word(cxt, OF_DT_BEGIN_NODE);
+ ft_put_bin(cxt, name, strlen(name) + 1);
+}
+
+void ft_end_node(struct ft_cxt *cxt)
+{
+ ft_put_word(cxt, OF_DT_END_NODE);
+}
+
+void ft_nop(struct ft_cxt *cxt)
+{
+ ft_put_word(cxt, OF_DT_NOP);
+}
+
+static int lookup_string(struct ft_cxt *cxt, const char *name)
+{
+ char *p;
+
+ p = cxt->pstr;
+ while (p < cxt->pstr_begin) {
+ if (strcmp(p, (char *)name) == 0)
+ return p - cxt->p_begin;
+ p += strlen(p) + 1;
+ }
+
+ return -1;
+}
+
+void ft_prop(struct ft_cxt *cxt, const char *name, const void *data, int sz)
+{
+ int len, off;
+
+ if (cxt->overflow)
+ return;
+
+ len = strlen(name) + 1;
+
+ off = lookup_string(cxt, name);
+ if (off == -1) {
+ /* check if we have space */
+ if (cxt->p + 12 + sz + len > cxt->pstr) {
+ cxt->overflow = 1;
+ return;
+ }
+
+ cxt->pstr -= len;
+ memcpy(cxt->pstr, name, len);
+ off = cxt->pstr - cxt->p_begin;
+ }
+
+ /* now put offset from beginning of *STRUCTURE* */
+ /* will be fixed up at the end */
+ ft_put_word(cxt, OF_DT_PROP);
+ ft_put_word(cxt, sz);
+ ft_put_word(cxt, off);
+ ft_put_bin(cxt, data, sz);
+}
+
+void ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str)
+{
+ ft_prop(cxt, name, str, strlen(str) + 1);
+}
+
+void ft_prop_int(struct ft_cxt *cxt, const char *name, int val)
+{
+ u32 v = cpu_to_be32((u32) val);
+
+ ft_prop(cxt, name, &v, 4);
+}
+
+/* start construction of the flat OF tree */
+void ft_begin(struct ft_cxt *cxt, void *blob, int max_size)
+{
+ struct boot_param_header *bph = blob;
+ u32 off;
+
+ /* clear the cxt */
+ memset(cxt, 0, sizeof(*cxt));
+
+ cxt->bph = bph;
+ cxt->max_size = max_size;
+
+ /* zero everything in the header area */
+ memset(bph, 0, sizeof(*bph));
+
+ bph->magic = cpu_to_be32(OF_DT_HEADER);
+ bph->version = cpu_to_be32(0x10);
+ bph->last_comp_version = cpu_to_be32(0x10);
+
+ /* start pointers */
+ cxt->pres_begin = (char *) _ALIGN((unsigned long)(bph + 1), 8);
+ cxt->pres = cxt->pres_begin;
+
+ off = (unsigned long)cxt->pres_begin - (unsigned long)bph;
+ bph->off_mem_rsvmap = cpu_to_be32(off);
+
+ ((u64 *) cxt->pres)[0] = 0; /* phys = 0, size = 0, terminate */
+ ((u64 *) cxt->pres)[1] = 0;
+
+ cxt->p_anchor = cxt->pres + 16; /* over the terminator */
+}
+
+/* add a reserver physical area to the rsvmap */
+void ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size)
+{
+ ((u64 *) cxt->pres)[0] = cpu_to_be64(physaddr); /* phys = 0, size = 0,
terminate */
+ ((u64 *) cxt->pres)[1] = cpu_to_be64(size);
+
+ cxt->pres += 18; /* advance */
+
+ ((u64 *) cxt->pres)[0] = 0; /* phys = 0, size = 0, terminate */
+ ((u64 *) cxt->pres)[1] = 0;
+
+ /* keep track of size */
+ cxt->res_size = cxt->pres + 16 - cxt->pres_begin;
+
+ cxt->p_anchor = cxt->pres + 16; /* over the terminator */
+}
+
+void ft_begin_tree(struct ft_cxt *cxt)
+{
+ cxt->p_begin = cxt->p_anchor;
+ cxt->pstr_begin = (char *)cxt->bph + cxt->max_size; /* point at the
end */
+
+ cxt->p = cxt->p_begin;
+ cxt->pstr = cxt->pstr_begin;
+}
+
+int ft_end_tree(struct ft_cxt *cxt)
+{
+ struct boot_param_header *bph = cxt->bph;
+ int off, sz, sz1;
+ u32 tag, v;
+ char *p;
+
+ ft_put_word(cxt, OF_DT_END);
+
+ if (cxt->overflow)
+ return -ENOMEM;
+
+ /* size of the areas */
+ cxt->struct_size = cxt->p - cxt->p_begin;
+ cxt->strings_size = cxt->pstr_begin - cxt->pstr;
+
+ /* the offset we must move */
+ off = (cxt->pstr_begin - cxt->p_begin) - cxt->strings_size;
+
+ /* the new strings start */
+ cxt->pstr_begin = cxt->p_begin + cxt->struct_size;
+
+ /* move the whole string area */
+ memmove(cxt->pstr_begin, cxt->pstr, cxt->strings_size);
+
+ /* now perform the fixup of the strings */
+ p = cxt->p_begin;
+ while ((tag = be32_to_cpu(*(u32 *) p)) != OF_DT_END) {
+ p += 4;
+
+ if (tag == OF_DT_BEGIN_NODE) {
+ p = (char *) _ALIGN((unsigned long)p + strlen(p) + 1,
4);
+ continue;
+ }
+
+ if (tag == OF_DT_END_NODE || tag == OF_DT_NOP)
+ continue;
+
+ if (tag != OF_DT_PROP)
+ return -EINVAL;
+
+ sz = be32_to_cpu(*(u32 *) p);
+ p += 4;
+
+ v = be32_to_cpu(*(u32 *) p);
+ v -= off;
+ *(u32 *) p = cpu_to_be32(v); /* move down */
+ p += 4;
+
+ p = (char *) _ALIGN((unsigned long)p + sz, 4);
+ }
+
+ /* fix sizes */
+ p = (char *)cxt->bph;
+ sz = (cxt->pstr_begin + cxt->strings_size) - p;
+ sz1 = _ALIGN(sz, 16); /* align at 16 bytes */
+ if (sz != sz1)
+ memset(p + sz, 0, sz1 - sz);
+ bph->totalsize = cpu_to_be32(sz1);
+ bph->off_dt_struct = cpu_to_be32(cxt->p_begin - p);
+ bph->off_dt_strings = cpu_to_be32(cxt->pstr_begin - p);
+
+ /* the new strings start */
+ cxt->pstr_begin = cxt->p_begin + cxt->struct_size;
+ cxt->pstr = cxt->pstr_begin + cxt->strings_size;
+
+ return 0;
+}
+
+/**********************************************************************/
+
+static inline int isprint(int c)
+{
+ return c >= 0x20 && c <= 0x7e;
+}
+
+static int is_printable_string(const void *data, int len)
+{
+ const char *s = data;
+ const char *ss;
+
+ /* zero length is not */
+ if (len == 0)
+ return 0;
+
+ /* must terminate with zero */
+ if (s[len - 1] != '\0')
+ return 0;
+
+ ss = s;
+ while (*s && isprint(*s))
+ s++;
+
+ /* not zero, or not done yet */
+ if (*s != '\0' || (s + 1 - ss) < len)
+ return 0;
+
+ return 1;
+}
+
+static void print_data(const void *data, int len)
+{
+ int i;
+ const char *s;
+
+ /* no data, don't print */
+ if (len == 0)
+ return;
+
+ if (is_printable_string(data, len)) {
+ printf(" = \"%s\"", (char *)data);
+ return;
+ }
+
+ switch (len) {
+ case 1: /* byte */
+ printf(" = <0x%02x>", (*(char *) data) & 0xff);
+ break;
+ case 2: /* half-word */
+ printf(" = <0x%04x>", be16_to_cpu(*(u16 *) data) & 0xffff);
+ break;
+ case 4: /* word */
+ printf(" = <0x%08x>", be32_to_cpu(*(u32 *) data) & 0xffffffffU);
+ break;
+ case 8: /* double-word */
+ printf(" = <0x%16llx>", be64_to_cpu(*(u64 *) data));
+ break;
+ default: /* anything else... hexdump */
+ printf(" = [");
+ for (i = 0, s = data; i < len; i++)
+ printf("%02x%s", s[i], i < len - 1 ? " " : "");
+ printf("]");
+
+ break;
+ }
+}
+
+void ft_dump_blob(const void *bphp)
+{
+ const struct boot_param_header *bph = bphp;
+ const u64 *p_rsvmap = (const u64 *)
+ ((const char *)bph + be32_to_cpu(bph->off_mem_rsvmap));
+ const u32 *p_struct = (const u32 *)
+ ((const char *)bph + be32_to_cpu(bph->off_dt_struct));
+ const u32 *p_strings = (const u32 *)
+ ((const char *)bph + be32_to_cpu(bph->off_dt_strings));
+ u32 tag;
+ const u32 *p;
+ const char *s, *t;
+ int depth, sz, shift;
+ int i;
+ u64 addr, size;
+
+ if (be32_to_cpu(bph->magic) != OF_DT_HEADER) {
+ /* not valid tree */
+ return;
+ }
+
+ depth = 0;
+ shift = 4;
+
+ for (i = 0;; i++) {
+ addr = be64_to_cpu(p_rsvmap[i * 2]);
+ size = be64_to_cpu(p_rsvmap[i * 2 + 1]);
+ if (addr == 0 && size == 0)
+ break;
+
+ printf("/memreserve/ 0x%llx 0x%llx;\n", addr, size);
+ }
+
+ p = p_struct;
+ while ((tag = be32_to_cpu(*p++)) != OF_DT_END) {
+
+ /* printf("tag: 0x%08x (%d)\n", tag, p - p_struct); */
+
+ if (tag == OF_DT_BEGIN_NODE) {
+ s = (const char *)p;
+ p = (u32 *) _ALIGN((unsigned long)p + strlen(s) + 1, 4);
+
+ printf("%*s%s {\n", depth * shift, "", s);
+
+ depth++;
+ continue;
+ }
+
+ if (tag == OF_DT_END_NODE) {
+ depth--;
+
+ printf("%*s};\n", depth * shift, "");
+ continue;
+ }
+
+ if (tag == OF_DT_NOP) {
+ printf("%*s[NOP]\n", depth * shift, "");
+ continue;
+ }
+
+ if (tag != OF_DT_PROP) {
+ fprintf(stderr, "%*s ** Unknown tag 0x%08x\n",
+ depth * shift, "", tag);
+ break;
+ }
+ sz = be32_to_cpu(*p++);
+ s = (const char *)p_strings + be32_to_cpu(*p++);
+ t = (const char *)p;
+ p = (const u32 *)_ALIGN((unsigned long)p + sz, 4);
+ printf("%*s%s", depth * shift, "", s);
+ print_data(t, sz);
+ printf(";\n");
+ }
+}
+
+void ft_backtrack_node(struct ft_cxt *cxt)
+{
+ if (be32_to_cpu(*(u32 *) (cxt->p - 4)) != OF_DT_END_NODE)
+ return; /* XXX only for node */
+
+ cxt->p -= 4;
+}
+
+/* note that the root node of the blob is "peeled" off */
+void ft_merge_blob(struct ft_cxt *cxt, void *blob)
+{
+ struct boot_param_header *bph = (struct boot_param_header *)blob;
+ u32 *p_struct = (u32 *) ((char *)bph + be32_to_cpu(bph->off_dt_struct));
+ u32 *p_strings =
+ (u32 *) ((char *)bph + be32_to_cpu(bph->off_dt_strings));
+ u32 tag, *p;
+ char *s, *t;
+ int depth, sz;
+
+ if (be32_to_cpu(*(u32 *) (cxt->p - 4)) != OF_DT_END_NODE)
+ return; /* XXX only for node */
+
+ cxt->p -= 4;
+
+ depth = 0;
+ p = p_struct;
+ while ((tag = be32_to_cpu(*p++)) != OF_DT_END) {
+
+ /* printf("tag: 0x%08x (%d) - %d\n", tag, p - p_struct, depth);
*/
+
+ if (tag == OF_DT_BEGIN_NODE) {
+ s = (char *)p;
+ p = (u32 *) _ALIGN((unsigned long)p + strlen(s) + 1, 4);
+
+ if (depth++ > 0)
+ ft_begin_node(cxt, s);
+
+ continue;
+ }
+
+ if (tag == OF_DT_END_NODE) {
+ ft_end_node(cxt);
+ if (--depth == 0)
+ break;
+ continue;
+ }
+
+ if (tag == OF_DT_NOP)
+ continue;
+
+ if (tag != OF_DT_PROP)
+ break;
+
+ sz = be32_to_cpu(*p++);
+ s = (char *)p_strings + be32_to_cpu(*p++);
+ t = (char *)p;
+ p = (u32 *) _ALIGN((unsigned long)p + sz, 4);
+
+ ft_prop(cxt, s, t, sz);
+ }
+}
+
+void *ft_get_prop(void *bphp, const char *propname, int *szp)
+{
+ struct boot_param_header *bph = bphp;
+ u32 *p_struct =
+ (u32 *) ((char *)bph + be32_to_cpu(bph->off_dt_struct));
+ u32 *p_strings =
+ (u32 *) ((char *)bph + be32_to_cpu(bph->off_dt_strings));
+ u32 version = be32_to_cpu(bph->version);
+ u32 tag;
+ u32 *p;
+ char *s, *t;
+ char *ss;
+ int sz;
+ static char path[256], prop[256];
+
+ path[0] = '\0';
+
+ p = p_struct;
+ while ((tag = be32_to_cpu(*p++)) != OF_DT_END) {
+
+ if (tag == OF_DT_BEGIN_NODE) {
+ s = (char *)p;
+ p = (u32 *) _ALIGN((unsigned long)p + strlen(s) +
+ 1, 4);
+ strcat(path, s);
+ strcat(path, "/");
+ continue;
+ }
+
+ if (tag == OF_DT_END_NODE) {
+ path[strlen(path) - 1] = '\0';
+ ss = strrchr(path, '/');
+ if (ss != NULL)
+ ss[1] = '\0';
+ continue;
+ }
+
+ if (tag == OF_DT_NOP)
+ continue;
+
+ if (tag != OF_DT_PROP)
+ break;
+
+ sz = be32_to_cpu(*p++);
+ s = (char *)p_strings + be32_to_cpu(*p++);
+ if (version < 0x10 && sz >= 8)
+ p = (u32 *) _ALIGN((unsigned long)p, 8);
+ t = (char *)p;
+ p = (u32 *) _ALIGN((unsigned long)p + sz, 4);
+
+ strcpy(prop, path);
+ strcat(prop, s);
+
+ if (strcmp(prop, propname) == 0) {
+ *szp = sz;
+ return t;
+ }
+ }
+
+ return NULL;
+}
+
+/********************************************************************/
+
+#if 0
+extern unsigned char oftree_dtb[];
+extern unsigned int oftree_dtb_len;
+
+void ft_setup(void *blob, int size, bd_t * bd)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+ char *end;
+ u32 *p;
+ int len;
+ struct ft_cxt cxt;
+ int i, k, nxt;
+ static char tmpenv[256];
+ char *s, *lval, *rval;
+ ulong clock;
+ u32 v;
+
+ /* disable OF tree; booting old kernel */
+ if (getenv("disable_of") != NULL) {
+ memcpy(blob, bd, sizeof(*bd));
+ return;
+ }
+
+ ft_begin(&cxt, blob, size);
+
+ /* fs_add_rsvmap not used */
+
+ ft_begin_tree(&cxt);
+
+ ft_begin_node(&cxt, "");
+
+ ft_end_node(&cxt);
+
+ /* copy RO tree */
+ ft_merge_blob(&cxt, oftree_dtb);
+
+ /* back into root */
+ ft_backtrack_node(&cxt);
+
+ ft_begin_node(&cxt, "u-boot-env");
+
+ for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
+ for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) ;
+ s = tmpenv;
+ for (k = i; k < nxt && s < &tmpenv[sizeof(tmpenv) - 1]; ++k)
+ *s++ = env_get_char(k);
+ *s++ = '\0';
+ lval = tmpenv;
+ s = strchr(tmpenv, '=');
+ if (s != NULL) {
+ *s++ = '\0';
+ rval = s;
+ } else
+ continue;
+ ft_prop_str(&cxt, lval, rval);
+ }
+
+ ft_end_node(&cxt);
+
+ ft_begin_node(&cxt, "chosen");
+
+ ft_prop_str(&cxt, "name", "chosen");
+ ft_prop_str(&cxt, "bootargs", getenv("bootargs"));
+ ft_prop_int(&cxt, "linux,platform", 0x600); /* what is this? */
+
+ ft_end_node(&cxt);
+
+ ft_end_node(&cxt); /* end root */
+
+ ft_end_tree(&cxt);
+
+ /*
+ printf("merged OF-tree\n");
+ ft_dump_blob(blob);
+ */
+
+ /* paste the bd_t at the end of the flat tree */
+ end = (char *)blob +
+ be32_to_cpu(((struct boot_param_header *)blob)->totalsize);
+ memcpy(end, bd, sizeof(*bd));
+
+#ifdef CONFIG_PPC
+
+ for (i = 0; i < sizeof(bd_map)/sizeof(bd_map[0]); i++) {
+ sprintf(tmpenv, "/bd_t/%s", bd_map[i].name);
+ v = *(u32 *)((char *)bd + bd_map[i].offset);
+
+ p = ft_get_prop(blob, tmpenv, &len);
+ if (p != NULL)
+ *p = cpu_to_be32(v);
+ }
+
+ p = ft_get_prop(blob, "/bd_t/enetaddr", &len);
+ if (p != NULL)
+ memcpy(p, bd->bi_enetaddr, 6);
+
+ p = ft_get_prop(blob, "/bd_t/ethspeed", &len);
+ if (p != NULL)
+ *p = cpu_to_be32((u32) bd->bi_ethspeed);
+
+ clock = bd->bi_intfreq;
+ p = ft_get_prop(blob, "/cpus/" OF_CPU "/clock-frequency", &len);
+ if (p != NULL)
+ *p = cpu_to_be32(clock);
+
+#ifdef OF_TBCLK
+ clock = OF_TBCLK;
+ p = ft_get_prop(blob, "/cpus/" OF_CPU "/timebase-frequency", &len);
+ if (p != NULL)
+ *p = cpu_to_be32(OF_TBCLK);
+#endif
+
+#endif /* __powerpc__ */
+
+ /*
+ printf("final OF-tree\n");
+ ft_dump_blob(blob);
+ */
+
+}
+#endif
diff -r da6be38bfdb1 tools/libxc/powerpc64/ft_build.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/powerpc64/ft_build.h Tue Aug 08 11:22:58 2006 -0500
@@ -0,0 +1,120 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef FT_BUILD_H
+#define FT_BUILD_H
+
+#include <endian.h>
+
+typedef unsigned short u16;
+typedef unsigned int u32;
+typedef unsigned long long u64;
+
+static inline u16 swab16(u16 x)
+{
+ return (((u16)(x) & (u16)0x00ffU) << 8) |
+ (((u16)(x) & (u16)0xff00U) >> 8);
+}
+
+static inline u32 swab32(u32 x)
+{
+ return (((u32)(x) & (u32)0x000000ffUL) << 24) |
+ (((u32)(x) & (u32)0x0000ff00UL) << 8) |
+ (((u32)(x) & (u32)0x00ff0000UL) >> 8) |
+ (((u32)(x) & (u32)0xff000000UL) >> 24);
+}
+
+static inline u64 swab64(u64 x)
+{
+ return (u64)(((u64)(x) & (u64)0x00000000000000ffULL) << 56) |
+ (u64)(((u64)(x) & (u64)0x000000000000ff00ULL) << 40) |
+ (u64)(((u64)(x) & (u64)0x0000000000ff0000ULL) << 24) |
+ (u64)(((u64)(x) & (u64)0x00000000ff000000ULL) << 8) |
+ (u64)(((u64)(x) & (u64)0x000000ff00000000ULL) >> 8) |
+ (u64)(((u64)(x) & (u64)0x0000ff0000000000ULL) >> 24) |
+ (u64)(((u64)(x) & (u64)0x00ff000000000000ULL) >> 40) |
+ (u64)(((u64)(x) & (u64)0xff00000000000000ULL) >> 56);
+}
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define cpu_to_be16(x) swab16(x)
+#define be16_to_cpu(x) swab16(x)
+#define cpu_to_be32(x) swab32(x)
+#define be32_to_cpu(x) swab32(x)
+#define cpu_to_be64(x) swab64(x)
+#define be64_to_cpu(x) swab64(x)
+#else
+#define cpu_to_be16(x) (x)
+#define be16_to_cpu(x) (x)
+#define cpu_to_be32(x) (x)
+#define be32_to_cpu(x) (x)
+#define cpu_to_be64(x) (x)
+#define be64_to_cpu(x) (x)
+#endif
+
+/* Definitions used by the flattened device tree */
+#define OF_DT_HEADER 0xd00dfeed /* marker */
+#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */
+#define OF_DT_END_NODE 0x2 /* End node */
+#define OF_DT_PROP 0x3 /* Property: name off, size, content */
+#define OF_DT_NOP 0x4 /* nop */
+#define OF_DT_END 0x9
+
+#define OF_DT_VERSION 0x10
+
+struct boot_param_header {
+ u32 magic; /* magic word OF_DT_HEADER */
+ u32 totalsize; /* total size of DT block */
+ u32 off_dt_struct; /* offset to structure */
+ u32 off_dt_strings; /* offset to strings */
+ u32 off_mem_rsvmap; /* offset to memory reserve map */
+ u32 version; /* format version */
+ u32 last_comp_version; /* last compatible version */
+ /* version 2 fields below */
+ u32 boot_cpuid_phys; /* Physical CPU id we're booting on */
+ /* version 3 fields below */
+ u32 dt_strings_size; /* size of the DT strings block */
+};
+
+struct ft_cxt {
+ struct boot_param_header *bph;
+ int max_size; /* maximum size of tree */
+ int overflow; /* set when this happens */
+ char *p, *pstr, *pres; /* running pointers */
+ char *p_begin, *pstr_begin, *pres_begin; /* starting pointers */
+ char *p_anchor; /* start of constructed area */
+ int struct_size, strings_size, res_size;
+};
+
+void ft_begin_node(struct ft_cxt *cxt, const char *name);
+void ft_end_node(struct ft_cxt *cxt);
+
+void ft_begin_tree(struct ft_cxt *cxt);
+int ft_end_tree(struct ft_cxt *cxt);
+
+void ft_nop(struct ft_cxt *cxt);
+void ft_prop(struct ft_cxt *cxt, const char *name, const void *data, int sz);
+void ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str);
+void ft_prop_int(struct ft_cxt *cxt, const char *name, int val);
+void ft_begin(struct ft_cxt *cxt, void *blob, int max_size);
+void ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size);
+
+void ft_dump_blob(const void *bphp);
+void ft_merge_blob(struct ft_cxt *cxt, void *blob);
+void *ft_get_prop(void *bphp, const char *propname, int *szp);
+void ft_set_prop(void *bphp, const char *propname, void *val, int len);
+
+#endif
--
Hollis Blanchard
IBM Linux Technology Center
_______________________________________________
Xen-ppc-devel mailing list
Xen-ppc-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-ppc-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |