# HG changeset patch
# User Hollis Blanchard <hollisb@xxxxxxxxxx>
# Date 1172781178 21600
# Node ID 6b42b8c08731d7bc1abedac2239707e14ae8599d
# Parent 7e9dc164b5720dbf60929333d33f8d94e981fe5b
[POWERPC][XEN] Don't create a start_info_t structure for dom0.
It's no longer needed now that Linux constructs its own via device tree
properties.
Signed-off-by: Ryan Harper <ryanh@xxxxxxxxxx>
Signed-off-by: Hollis Blanchard <hollisb@xxxxxxxxxx>
---
tools/libxc/powerpc64/xc_linux_build.c | 8 ++----
xen/arch/powerpc/domain_build.c | 43 +++++++++------------------------
xen/arch/powerpc/mm.c | 4 +--
xen/arch/powerpc/ofd_fixup.c | 27 +++++++++++++-------
xen/arch/powerpc/oftree.h | 3 +-
xen/include/asm-powerpc/domain.h | 5 ---
xen/include/public/arch-powerpc.h | 8 ------
7 files changed, 37 insertions(+), 61 deletions(-)
diff -r 7e9dc164b572 -r 6b42b8c08731 tools/libxc/powerpc64/xc_linux_build.c
--- a/tools/libxc/powerpc64/xc_linux_build.c Mon Feb 19 16:49:12 2007 +0900
+++ b/tools/libxc/powerpc64/xc_linux_build.c Thu Mar 01 14:32:58 2007 -0600
@@ -33,7 +33,6 @@
#include <xc_private.h>
#include <xg_private.h>
#include <xenctrl.h>
-#include <xen/arch-powerpc.h>
#include "flatdevtree_env.h"
#include "flatdevtree.h"
@@ -256,10 +255,9 @@ int xc_linux_build(int xc_handle,
}
/* determine shared_info, console, and store paddr */
- shared_info_paddr = (rma_pages << PAGE_SHIFT) -
- (RMA_SHARED_INFO * PAGE_SIZE);
- console_paddr = (rma_pages << PAGE_SHIFT) - (RMA_CONSOLE * PAGE_SIZE);
- store_paddr = (rma_pages << PAGE_SHIFT) - (RMA_STORE * PAGE_SIZE);
+ shared_info_paddr = (rma_pages << PAGE_SHIFT) - PAGE_SIZE;
+ console_paddr = shared_info_paddr - PAGE_SIZE;
+ store_paddr = console_paddr - PAGE_SIZE;
/* map paddrs to mfns */
*store_mfn = page_array[(xen_pfn_t)(store_paddr >> PAGE_SHIFT)];
diff -r 7e9dc164b572 -r 6b42b8c08731 xen/arch/powerpc/domain_build.c
--- a/xen/arch/powerpc/domain_build.c Mon Feb 19 16:49:12 2007 +0900
+++ b/xen/arch/powerpc/domain_build.c Thu Mar 01 14:32:58 2007 -0600
@@ -67,10 +67,12 @@ int construct_dom0(struct domain *d,
uint rma_nrpages = 1 << d->arch.rma_order;
ulong rma_sz = rma_size(d->arch.rma_order);
ulong rma = page_to_maddr(d->arch.rma_page);
- start_info_t *si;
ulong eomem;
int preempt = 0;
int vcpu;
+ ulong mod_start = 0;
+ ulong mod_len = 0;
+ ulong shared_info_addr;
/* Sanity! */
BUG_ON(d->domain_id != 0);
@@ -134,24 +136,8 @@ int construct_dom0(struct domain *d,
ASSERT( image_len < rma_sz );
- si = (start_info_t *)(rma_addr(&d->arch, RMA_START_INFO) + rma);
- printk("xen_start_info: %p\n", si);
-
- snprintf(si->magic, sizeof(si->magic), "xen-%i.%i-powerpc%d%s",
- xen_major_version(), xen_minor_version(), BITS_PER_LONG, "HV");
- si->flags = SIF_PRIVILEGED | SIF_INITDOMAIN;
-
- si->shared_info = ((ulong)d->shared_info) - rma;
- printk("shared_info: 0x%lx,%p\n", si->shared_info, d->shared_info);
-
- eomem = si->shared_info;
-
- /* number of pages accessible */
- si->nr_pages = rma_sz >> PAGE_SHIFT;
-
- si->pt_base = 0;
- si->nr_pt_frames = 0;
- si->mfn_list = 0;
+ eomem = ((ulong)d->shared_info) - rma;
+ printk("shared_info: 0x%lx,%p\n", eomem, d->shared_info);
/* OF usually sits here:
* - Linux needs it to be loaded before the vmlinux or initrd
@@ -217,14 +203,12 @@ int construct_dom0(struct domain *d,
printk("loading initrd: 0x%lx, 0x%lx\n", dst, initrd_len);
memcpy((void *)dst, (void *)initrd_start, initrd_len);
- si->mod_start = dst - rma;
- si->mod_len = image_len;
+ mod_start = dst - rma;
+ mod_len = image_len;
dst = ALIGN_UP(dst + initrd_len, PAGE_SIZE);
} else {
printk("no initrd\n");
- si->mod_start = 0;
- si->mod_len = 0;
}
if (elf_64bit(&elf)) {
@@ -233,8 +217,8 @@ int construct_dom0(struct domain *d,
v->arch.ctxt.msr = 0;
}
v->arch.ctxt.gprs[2] = 0;
- v->arch.ctxt.gprs[3] = si->mod_start;
- v->arch.ctxt.gprs[4] = si->mod_len;
+ v->arch.ctxt.gprs[3] = mod_start;
+ v->arch.ctxt.gprs[4] = mod_len;
printk("dom0 initial register state:\n"
" pc %016lx msr %016lx\n"
@@ -248,11 +232,10 @@ int construct_dom0(struct domain *d,
v->arch.ctxt.gprs[4],
v->arch.ctxt.gprs[5]);
- memset(si->cmd_line, 0, sizeof(si->cmd_line));
- if ( cmdline != NULL )
- strlcpy((char *)si->cmd_line, cmdline, sizeof(si->cmd_line));
-
- ofd_dom0_fixup(d, *ofh_tree + rma, si);
+ /* convert xen pointer shared_info into guest physical */
+ shared_info_addr = (ulong)d->shared_info - page_to_maddr(d->arch.rma_page);
+
+ ofd_dom0_fixup(d, *ofh_tree + rma, cmdline, shared_info_addr);
set_bit(_VCPUF_initialised, &v->vcpu_flags);
diff -r 7e9dc164b572 -r 6b42b8c08731 xen/arch/powerpc/mm.c
--- a/xen/arch/powerpc/mm.c Mon Feb 19 16:49:12 2007 +0900
+++ b/xen/arch/powerpc/mm.c Thu Mar 01 14:32:58 2007 -0600
@@ -384,8 +384,8 @@ int allocate_rma(struct domain *d, unsig
clear_page((void *)page_to_maddr(&d->arch.rma_page[i]));
}
- d->shared_info = (shared_info_t *)
- (rma_addr(&d->arch, RMA_SHARED_INFO) + rma_base);
+ /* shared_info uses last page of RMA */
+ d->shared_info = (shared_info_t *) (rma_base + rma_sz - PAGE_SIZE);
/* if there are already running vcpus, adjust v->vcpu_info */
/* XXX untested */
diff -r 7e9dc164b572 -r 6b42b8c08731 xen/arch/powerpc/ofd_fixup.c
--- a/xen/arch/powerpc/ofd_fixup.c Mon Feb 19 16:49:12 2007 +0900
+++ b/xen/arch/powerpc/ofd_fixup.c Thu Mar 01 14:32:58 2007 -0600
@@ -326,7 +326,7 @@ static ofdn_t ofd_rtas_props(void *m)
}
#endif
-static ofdn_t ofd_xen_props(void *m, struct domain *d, start_info_t *si)
+static ofdn_t ofd_xen_props(void *m, struct domain *d, ulong shared_info)
{
ofdn_t n;
static const char path[] = "/xen";
@@ -349,19 +349,25 @@ static ofdn_t ofd_xen_props(void *m, str
ASSERT(xl < sizeof (xen));
ofd_prop_add(m, n, "version", xen, xl + 1);
- val[0] = (ulong)si - page_to_maddr(d->arch.rma_page);
+ /* convert xen pointer to guest physical */
+ val[0] = shared_info;
val[1] = PAGE_SIZE;
- ofd_prop_add(m, n, "start-info", val, sizeof (val));
-
- val[1] = RMA_LAST_DOM0 * PAGE_SIZE;
- val[0] = rma_size(d->arch.rma_order) - val[1];
+ ofd_prop_add(m, n, "shared-info", val, sizeof (val));
+
+ /* reserve PAGE_SIZE @ addr shared info */
ofd_prop_add(m, n, "reserved", val, sizeof (val));
+
+ /* flags |= SIF_PROVILEDGED; */
+ ofd_prop_add(m, n, "privileged", NULL, 0);
+
+ /* flags |= SIF_INITDOMAIN; */
+ ofd_prop_add(m, n, "initdomain", NULL, 0);
/* tell dom0 that Xen depends on it to have power control */
if (!rtas_entry)
ofd_prop_add(m, n, "power-control", NULL, 0);
- /* tell dom0 where ranted pages go in the linear map */
+ /* tell dom0 where granted pages go in the linear map */
val[0] = cpu_foreign_map_order();
val[1] = d->arch.foreign_mfn_count;
ofd_prop_add(m, n, "foreign-map", val, sizeof (val));
@@ -375,7 +381,8 @@ static ofdn_t ofd_xen_props(void *m, str
return n;
}
-int ofd_dom0_fixup(struct domain *d, ulong mem, start_info_t *si)
+int ofd_dom0_fixup(struct domain *d, ulong mem, const char *cmdline,
+ ulong shared_info)
{
void *m;
const ofdn_t n = OFD_ROOT;
@@ -401,13 +408,13 @@ int ofd_dom0_fixup(struct domain *d, ulo
ofd_cpus_props(m, d);
printk("Add /chosen props\n");
- ofd_chosen_props(m, (char *)si->cmd_line);
+ ofd_chosen_props(m, cmdline);
printk("fix /memory props\n");
ofd_memory_props(m, d);
printk("fix /xen props\n");
- ofd_xen_props(m, d, si);
+ ofd_xen_props(m, d, shared_info);
printk("Remove original /dart\n");
ofd_prune_path(m, "/dart");
diff -r 7e9dc164b572 -r 6b42b8c08731 xen/arch/powerpc/oftree.h
--- a/xen/arch/powerpc/oftree.h Mon Feb 19 16:49:12 2007 +0900
+++ b/xen/arch/powerpc/oftree.h Thu Mar 01 14:32:58 2007 -0600
@@ -28,7 +28,8 @@ extern ulong oftree_end;
extern ulong oftree_end;
extern ofdn_t ofd_boot_cpu;
-extern int ofd_dom0_fixup(struct domain *d, ulong mem, start_info_t *si);
+extern int ofd_dom0_fixup(struct domain *d, ulong mem, const char *cmdline,
+ ulong shared_info);
extern void ofd_memory_props(void *m, struct domain *d);
extern int firmware_image_start[0];
diff -r 7e9dc164b572 -r 6b42b8c08731 xen/include/asm-powerpc/domain.h
--- a/xen/include/asm-powerpc/domain.h Mon Feb 19 16:49:12 2007 +0900
+++ b/xen/include/asm-powerpc/domain.h Thu Mar 01 14:32:58 2007 -0600
@@ -109,9 +109,4 @@ extern void load_float(struct vcpu *);
#define rma_size(rma_order) (1UL << ((rma_order) + PAGE_SHIFT))
-static inline ulong rma_addr(struct arch_domain *ad, int type)
-{
- return rma_size(ad->rma_order) - (type * PAGE_SIZE);
-}
-
#endif
diff -r 7e9dc164b572 -r 6b42b8c08731 xen/include/public/arch-powerpc.h
--- a/xen/include/public/arch-powerpc.h Mon Feb 19 16:49:12 2007 +0900
+++ b/xen/include/public/arch-powerpc.h Thu Mar 01 14:32:58 2007 -0600
@@ -118,14 +118,6 @@ struct arch_vcpu_info {
struct arch_vcpu_info {
};
-#define RMA_SHARED_INFO 1
-#define RMA_START_INFO 2
-#define RMA_LAST_DOM0 2
-/* these are not used for dom0 so they should be last */
-#define RMA_CONSOLE 3
-#define RMA_STORE 4
-#define RMA_LAST_DOMU 4
-
/* Support for multi-processor guests. */
#define MAX_VIRT_CPUS 32
#endif
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