Ian Campbell
2013-Nov-01 11:19 UTC
[PATCH v2 00/14] xen: arm: 64-bit guest support and domU FDT autogeneration
I''ve addressed all (I think/hope) of the review comments. The main change is to expose the guest virtual platform (e.g. memory layout and interrupt usage etc) to the toolstack via the public interface. This is then used during FDT generation. I have just codified the current defacto standard layout, it''s probably not the best layout but any change can be a separate patch/series. The fdt generation, especially error handling, is improved. There is still one niggle regarding the selection of the cpu compatibility for arm32 guests. See the comment in the last patch. I''ve still yet to try this properly on 32-bit... it does build though!
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
---
xen/arch/arm/setup.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c
index 1081b43..cdcc2e7 100644
--- a/xen/arch/arm/setup.c
+++ b/xen/arch/arm/setup.c
@@ -731,6 +731,10 @@ void arch_get_xen_caps(xen_capabilities_info_t *info)
(*info)[0] = ''\0'';
+#ifdef CONFIG_ARM_64
+ snprintf(s, sizeof(s), "xen-%d.%d-aarch64 ", major, minor);
+ safe_strcat(*info, s);
+#endif
snprintf(s, sizeof(s), "xen-%d.%d-armv7l ", major, minor);
safe_strcat(*info, s);
}
--
1.8.4.rc3
Ian Campbell
2013-Nov-01 11:19 UTC
[PATCH 02/14] xen: arm: Add comment regard arm64 zImage v0 vs v1
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
---
xen/arch/arm/kernel.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/xen/arch/arm/kernel.c b/xen/arch/arm/kernel.c
index 315d12c..7036d94 100644
--- a/xen/arch/arm/kernel.c
+++ b/xen/arch/arm/kernel.c
@@ -139,6 +139,7 @@ static int kernel_try_zimage64_prepare(struct kernel_info
*info,
uint64_t text_offset; /* Image load offset */
uint64_t res1;
uint64_t res2;
+ /* zImage V1 only from here */
uint64_t res3;
uint64_t res4;
uint64_t res5;
--
1.8.4.rc3
Ian Campbell
2013-Nov-01 11:20 UTC
[PATCH 03/14] xen: arm: allocate dom0 memory separately from preparing the dtb
Mixing these two together is a pain, it forces us to prepare the dtb before
processing the kernel which means we don''t know whether the guest is
32- or
64-bit while we construct its DTB.
Instead split out the memory allocation (including 1:1 workaround handling)
and p2m setup into a separate phase and then create a memory node in the DTB
based on the result.
This allows us to move kernel parsing before DTB setup.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
v2: Fixed typo in the commit log
Handle multiple memory nodes as well as individual nodes with several
entries in them.
Strip the original memory node and recreate rather than trying to modify.
---
xen/arch/arm/domain_build.c | 158 +++++++++++++++++++++++++++-----------------
1 file changed, 98 insertions(+), 60 deletions(-)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index c644be2..6e482a9 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -63,11 +63,8 @@ struct vcpu *__init alloc_dom0_vcpu0(void)
return alloc_vcpu(dom0, 0, 0);
}
-static int set_memory_reg_11(struct domain *d, struct kernel_info *kinfo,
- const struct dt_property *pp,
- const struct dt_device_node *np, __be32 *new_cell)
+static void allocate_memory_11(struct domain *d, struct kernel_info *kinfo)
{
- int reg_size = dt_cells_to_size(dt_n_addr_cells(np) + dt_n_size_cells(np));
paddr_t start;
paddr_t size;
struct page_info *pg = NULL;
@@ -98,53 +95,61 @@ static int set_memory_reg_11(struct domain *d, struct
kernel_info *kinfo,
if ( res )
panic("Unable to add pages in DOM0: %d\n", res);
- dt_set_range(&new_cell, np, start, size);
-
kinfo->mem.bank[0].start = start;
kinfo->mem.bank[0].size = size;
kinfo->mem.nr_banks = 1;
- return reg_size;
+ kinfo->unassigned_mem -= size;
}
-static int set_memory_reg(struct domain *d, struct kernel_info *kinfo,
- const struct dt_property *pp,
- const struct dt_device_node *np, __be32 *new_cell)
+static void allocate_memory(struct domain *d, struct kernel_info *kinfo)
{
- int reg_size = dt_cells_to_size(dt_n_addr_cells(np) + dt_n_size_cells(np));
- int l = 0;
+
+ struct dt_device_node *memory = NULL;
+ const void *reg;
+ u32 reg_len, reg_size;
unsigned int bank = 0;
- u64 start;
- u64 size;
- int ret;
if ( platform_has_quirk(PLATFORM_QUIRK_DOM0_MAPPING_11) )
- return set_memory_reg_11(d, kinfo, pp, np, new_cell);
+ return allocate_memory_11(d, kinfo);
- while ( kinfo->unassigned_mem > 0 && l + reg_size <=
pp->length
- && kinfo->mem.nr_banks < NR_MEM_BANKS )
+ while ( (memory = dt_find_node_by_type(memory, "memory")) )
{
- ret = dt_device_get_address(np, bank, &start, &size);
- if ( ret )
- panic("Unable to retrieve the bank %u for %s\n",
- bank, dt_node_full_name(np));
-
- if ( size > kinfo->unassigned_mem )
- size = kinfo->unassigned_mem;
- dt_set_range(&new_cell, np, start, size);
-
- printk("Populate P2M
%#"PRIx64"->%#"PRIx64"\n", start, start + size);
- if ( p2m_populate_ram(d, start, start + size) < 0 )
- panic("Failed to populate P2M\n");
- kinfo->mem.bank[kinfo->mem.nr_banks].start = start;
- kinfo->mem.bank[kinfo->mem.nr_banks].size = size;
- kinfo->mem.nr_banks++;
- kinfo->unassigned_mem -= size;
-
- l += reg_size;
- }
+ int l;
+
+ DPRINT("memory node\n");
+
+ reg_size = dt_cells_to_size(dt_n_addr_cells(memory) +
dt_n_size_cells(memory));
- return l;
+ reg = dt_get_property(memory, "reg", ®_len);
+ if ( reg == NULL )
+ panic("Memory node has no reg property!\n");
+
+ for ( l = 0;
+ kinfo->unassigned_mem > 0 && l + reg_size <=
reg_len
+ && kinfo->mem.nr_banks < NR_MEM_BANKS;
+ l += reg_size )
+ {
+ paddr_t start, size;
+
+ if ( dt_device_get_address(memory, bank, &start, &size) )
+ panic("Unable to retrieve the bank %u for %s\n",
+ bank, dt_node_full_name(memory));
+
+ if ( size > kinfo->unassigned_mem )
+ size = kinfo->unassigned_mem;
+
+ printk("Populate P2M
%#"PRIx64"->%#"PRIx64"\n",
+ start, start + size);
+ if ( p2m_populate_ram(d, start, start + size) < 0 )
+ panic("Failed to populate P2M\n");
+ kinfo->mem.bank[kinfo->mem.nr_banks].start = start;
+ kinfo->mem.bank[kinfo->mem.nr_banks].size = size;
+ kinfo->mem.nr_banks++;
+
+ kinfo->unassigned_mem -= size;
+ }
+ }
}
static int write_properties(struct domain *d, struct kernel_info *kinfo,
@@ -193,23 +198,6 @@ static int write_properties(struct domain *d, struct
kernel_info *kinfo,
continue;
}
}
- /*
- * In a memory node: adjust reg property.
- * TODO: handle properly memory node (ie: device_type =
"memory")
- */
- else if ( dt_node_name_is_equal(np, "memory") )
- {
- if ( dt_property_name_is_equal(pp, "reg") )
- {
- new_data = xzalloc_bytes(pp->length);
- if ( new_data == NULL )
- return -FDT_ERR_XEN(ENOMEM);
-
- prop_len = set_memory_reg(d, kinfo, pp, np,
- (__be32 *)new_data);
- prop_data = new_data;
- }
- }
res = fdt_property(kinfo->fdt, pp->name, prop_data, prop_len);
@@ -286,6 +274,46 @@ static int fdt_property_interrupts(void *fdt,
gic_interrupt_t *intr,
return res;
}
+static int make_memory_node(struct domain *d,
+ void *fdt, const struct dt_device_node *np,
+ const struct kernel_info *kinfo)
+{
+ int res, i;
+ int reg_size = dt_cells_to_size(dt_n_addr_cells(np) + dt_n_size_cells(np));
+ __be32 reg[reg_size*kinfo->mem.nr_banks];
+ __be32 *cells;
+
+ DPRINT("Create memory node\n");
+
+ /* ePAPR 3.4 */
+ res = fdt_begin_node(fdt, "memory");
+ if ( res )
+ return res;
+
+ res = fdt_property_string(fdt, "device_type",
"memory");
+ if ( res )
+ return res;
+
+ cells = ®[0];
+ for ( i = 0 ; i < kinfo->mem.nr_banks; i++ )
+ {
+ u64 start = kinfo->mem.bank[i].start;
+ u64 size = kinfo->mem.bank[i].size;
+
+ DPRINT(" Bank %d:
%#"PRIx64"->%#"PRIx64"\n",
+ i, start, start + size);
+
+ dt_set_range(&cells, np, start, size);
+ }
+
+ res = fdt_property(fdt, "reg", reg,
reg_size*kinfo->mem.nr_banks);
+ if ( res )
+ return res;
+
+ res = fdt_end_node(fdt);
+
+ return res;
+}
static int make_hypervisor_node(void *fdt, const struct dt_device_node *parent)
{
@@ -690,6 +718,7 @@ static int handle_node(struct domain *d, struct kernel_info
*kinfo,
DT_MATCH_COMPATIBLE("xen,multiboot-module"),
DT_MATCH_COMPATIBLE("arm,psci"),
DT_MATCH_PATH("/cpus"),
+ DT_MATCH_TYPE("memory"),
DT_MATCH_GIC,
DT_MATCH_TIMER,
{ /* sentinel */ },
@@ -754,6 +783,10 @@ static int handle_node(struct domain *d, struct kernel_info
*kinfo,
if ( np == dt_host )
{
+ res = make_memory_node(d, kinfo->fdt, np, kinfo);
+ if ( res )
+ return res;
+
res = make_hypervisor_node(kinfo->fdt, np);
if ( res )
return res;
@@ -791,8 +824,6 @@ static int prepare_dtb(struct domain *d, struct kernel_info
*kinfo)
ASSERT(dt_host && (dt_host->sibling == NULL));
- kinfo->unassigned_mem = dom0_mem;
-
fdt = device_tree_flattened;
new_size = fdt_totalsize(fdt) + DOM0_FDT_EXTRA_SIZE;
@@ -938,11 +969,19 @@ int construct_dom0(struct domain *d)
d->max_pages = ~0U;
- rc = prepare_dtb(d, &kinfo);
+ kinfo.unassigned_mem = dom0_mem;
+
+ allocate_memory(d, &kinfo);
+
+ rc = kernel_prepare(&kinfo);
if ( rc < 0 )
return rc;
- rc = kernel_prepare(&kinfo);
+#ifdef CONFIG_ARM_64
+ d->arch.type = kinfo.type;
+#endif
+
+ rc = prepare_dtb(d, &kinfo);
if ( rc < 0 )
return rc;
@@ -977,7 +1016,6 @@ int construct_dom0(struct domain *d)
regs->pc = (register_t)kinfo.entry;
-
if ( is_pv32_domain(d) )
{
regs->cpsr = PSR_GUEST32_INIT;
--
1.8.4.rc3
Ian Campbell
2013-Nov-01 11:20 UTC
[PATCH 04/14] xen: arm: add enable-method to cpu nodes for arm64 guests.
This is required by the Linux arm64 boot protocol.
We use PSCI.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
---
xen/arch/arm/domain_build.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 6e482a9..4348527 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -485,6 +485,13 @@ static int make_cpus_node(const struct domain *d, void
*fdt,
if ( res )
return res;
+ if ( is_pv64_domain(d) )
+ {
+ res = fdt_property_string(fdt, "enable-method",
"psci");
+ if ( res )
+ return res;
+ }
+
res = fdt_end_node(fdt);
if ( res )
return res;
--
1.8.4.rc3
Ian Campbell
2013-Nov-01 11:20 UTC
[PATCH 05/14] xen: arm: implement XEN_DOMCTL_set_address_size
This subarch specific to plumb through to arm32 and arm64 versions.
The toolstack uses this to select 32- vs 64-bit guests (or rather it does on
x86 an soon will for arm too).
I noticed that domctl.c and sysctl.c weren''t including xen/hypercall.h
to get
their arch_do_fooctl prototypes, so fix that.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
xen/arch/arm/arm32/Makefile | 1 +
xen/arch/arm/arm32/domctl.c | 35 ++++++++++++++++++++++++
xen/arch/arm/arm64/Makefile | 1 +
xen/arch/arm/arm64/domctl.c | 59 +++++++++++++++++++++++++++++++++++++++++
xen/arch/arm/domctl.c | 7 ++++-
xen/arch/arm/sysctl.c | 1 +
xen/include/asm-arm/hypercall.h | 3 +++
7 files changed, 106 insertions(+), 1 deletion(-)
create mode 100644 xen/arch/arm/arm32/domctl.c
create mode 100644 xen/arch/arm/arm64/domctl.c
diff --git a/xen/arch/arm/arm32/Makefile b/xen/arch/arm/arm32/Makefile
index aacdcb9..65ecff4 100644
--- a/xen/arch/arm/arm32/Makefile
+++ b/xen/arch/arm/arm32/Makefile
@@ -7,5 +7,6 @@ obj-y += traps.o
obj-y += domain.o
obj-y += vfp.o
obj-y += smpboot.o
+obj-y += domctl.o
obj-$(EARLY_PRINTK) += debug.o
diff --git a/xen/arch/arm/arm32/domctl.c b/xen/arch/arm/arm32/domctl.c
new file mode 100644
index 0000000..c2ca4d3
--- /dev/null
+++ b/xen/arch/arm/arm32/domctl.c
@@ -0,0 +1,35 @@
+/******************************************************************************
+ * Subarch-specific domctl.c
+ *
+ * Copyright (c) 2013, Citrix Systems
+ */
+
+#include <xen/config.h>
+#include <xen/types.h>
+#include <xen/lib.h>
+#include <xen/errno.h>
+#include <xen/sched.h>
+#include <xen/hypercall.h>
+#include <public/domctl.h>
+
+long subarch_do_domctl(struct xen_domctl *domctl, struct domain *d,
+ XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl)
+{
+ switch ( domctl->cmd )
+ {
+ case XEN_DOMCTL_set_address_size:
+ return domctl->u.address_size.size == 32 ? 0 : -EINVAL;
+ default:
+ return -ENOSYS;
+ }
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/arch/arm/arm64/Makefile b/xen/arch/arm/arm64/Makefile
index 5d28bad..d2d5875 100644
--- a/xen/arch/arm/arm64/Makefile
+++ b/xen/arch/arm/arm64/Makefile
@@ -6,5 +6,6 @@ obj-y += traps.o
obj-y += domain.o
obj-y += vfp.o
obj-y += smpboot.o
+obj-y += domctl.o
obj-$(EARLY_PRINTK) += debug.o
diff --git a/xen/arch/arm/arm64/domctl.c b/xen/arch/arm/arm64/domctl.c
new file mode 100644
index 0000000..e2b4617
--- /dev/null
+++ b/xen/arch/arm/arm64/domctl.c
@@ -0,0 +1,59 @@
+/******************************************************************************
+ * Subarch-specific domctl.c
+ *
+ * Copyright (c) 2013, Citrix Systems
+ */
+
+#include <xen/config.h>
+#include <xen/types.h>
+#include <xen/lib.h>
+#include <xen/errno.h>
+#include <xen/sched.h>
+#include <xen/hypercall.h>
+#include <public/domctl.h>
+
+static long switch_mode(struct domain *d, enum domain_type type)
+{
+ if ( d == NULL )
+ return -EINVAL;
+ if ( d->tot_pages != 0 )
+ return -EBUSY;
+ if ( d->arch.type == type )
+ return 0;
+
+ d->arch.type = type;
+
+ return 0;
+}
+
+long subarch_do_domctl(struct xen_domctl *domctl, struct domain *d,
+ XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl)
+{
+ switch ( domctl->cmd )
+ {
+ case XEN_DOMCTL_set_address_size:
+ switch ( domctl->u.address_size.size )
+ {
+ case 32:
+ return switch_mode(d, DOMAIN_PV32);
+ case 64:
+ return switch_mode(d, DOMAIN_PV64);
+ default:
+ return -EINVAL;
+ }
+ break;
+
+ default:
+ return -ENOSYS;
+ }
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/arch/arm/domctl.c b/xen/arch/arm/domctl.c
index 851ee40..546e86b 100644
--- a/xen/arch/arm/domctl.c
+++ b/xen/arch/arm/domctl.c
@@ -9,12 +9,17 @@
#include <xen/lib.h>
#include <xen/errno.h>
#include <xen/sched.h>
+#include <xen/hypercall.h>
#include <public/domctl.h>
long arch_do_domctl(struct xen_domctl *domctl, struct domain *d,
XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl)
{
- return -ENOSYS;
+ switch ( domctl->cmd )
+ {
+ default:
+ return subarch_do_domctl(domctl, d, u_domctl);
+ }
}
void arch_get_info_guest(struct vcpu *v, vcpu_guest_context_u c)
diff --git a/xen/arch/arm/sysctl.c b/xen/arch/arm/sysctl.c
index 6388204..98bab6a 100644
--- a/xen/arch/arm/sysctl.c
+++ b/xen/arch/arm/sysctl.c
@@ -10,6 +10,7 @@
#include <xen/types.h>
#include <xen/lib.h>
#include <xen/errno.h>
+#include <xen/hypercall.h>
#include <public/sysctl.h>
void arch_do_physinfo(xen_sysctl_physinfo_t *pi) { }
diff --git a/xen/include/asm-arm/hypercall.h b/xen/include/asm-arm/hypercall.h
index 3327a96..94a92d4 100644
--- a/xen/include/asm-arm/hypercall.h
+++ b/xen/include/asm-arm/hypercall.h
@@ -6,6 +6,9 @@ int do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg);
long do_arm_vcpu_op(int cmd, int vcpuid, XEN_GUEST_HANDLE_PARAM(void) arg);
+long subarch_do_domctl(struct xen_domctl *domctl, struct domain *d,
+ XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl);
+
#endif /* __ASM_ARM_HYPERCALL_H__ */
/*
* Local variables:
--
1.8.4.rc3
Ian Campbell
2013-Nov-01 11:20 UTC
[PATCH 06/14] xen: arm: implement arch_set_info_guest for 64-bit vcpus
This all seems too easy...
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
xen/arch/arm/domain.c | 64 ++++++++++++++++++++++++++++++++++++++++-----------
1 file changed, 50 insertions(+), 14 deletions(-)
diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c
index cb0424d..5ff7adf 100644
--- a/xen/arch/arm/domain.c
+++ b/xen/arch/arm/domain.c
@@ -550,7 +550,7 @@ void arch_domain_destroy(struct domain *d)
free_xenheap_page(d->shared_info);
}
-static int is_guest_psr(uint32_t psr)
+static int is_guest_pv32_psr(uint32_t psr)
{
switch (psr & PSR_MODE_MASK)
{
@@ -569,6 +569,29 @@ static int is_guest_psr(uint32_t psr)
}
}
+
+#ifdef CONFIG_ARM_64
+static int is_guest_pv64_psr(uint32_t psr)
+{
+ if ( psr & PSR_MODE_BIT )
+ return 0;
+
+ switch (psr & PSR_MODE_MASK)
+ {
+ case PSR_MODE_EL1h:
+ case PSR_MODE_EL1t:
+ case PSR_MODE_EL0t:
+ return 1;
+ case PSR_MODE_EL3h:
+ case PSR_MODE_EL3t:
+ case PSR_MODE_EL2h:
+ case PSR_MODE_EL2t:
+ default:
+ return 0;
+ }
+}
+#endif
+
/*
* Initialise VCPU state. The context can be supplied by either the
* toolstack (XEN_DOMCTL_setvcpucontext) or the guest
@@ -580,19 +603,32 @@ int arch_set_info_guest(
struct vcpu_guest_context *ctxt = c.nat;
struct vcpu_guest_core_regs *regs = &c.nat->user_regs;
- if ( !is_guest_psr(regs->cpsr) )
- return -EINVAL;
-
- if ( regs->spsr_svc && !is_guest_psr(regs->spsr_svc) )
- return -EINVAL;
- if ( regs->spsr_abt && !is_guest_psr(regs->spsr_abt) )
- return -EINVAL;
- if ( regs->spsr_und && !is_guest_psr(regs->spsr_und) )
- return -EINVAL;
- if ( regs->spsr_irq && !is_guest_psr(regs->spsr_irq) )
- return -EINVAL;
- if ( regs->spsr_fiq && !is_guest_psr(regs->spsr_fiq) )
- return -EINVAL;
+ if ( is_pv32_domain(v->domain) )
+ {
+ if ( !is_guest_pv32_psr(regs->cpsr) )
+ return -EINVAL;
+
+ if ( regs->spsr_svc && !is_guest_pv32_psr(regs->spsr_svc)
)
+ return -EINVAL;
+ if ( regs->spsr_abt && !is_guest_pv32_psr(regs->spsr_abt)
)
+ return -EINVAL;
+ if ( regs->spsr_und && !is_guest_pv32_psr(regs->spsr_und)
)
+ return -EINVAL;
+ if ( regs->spsr_irq && !is_guest_pv32_psr(regs->spsr_irq)
)
+ return -EINVAL;
+ if ( regs->spsr_fiq && !is_guest_pv32_psr(regs->spsr_fiq)
)
+ return -EINVAL;
+ }
+#ifdef CONFIG_ARM_64
+ else
+ {
+ if ( !is_guest_pv64_psr(regs->cpsr) )
+ return -EINVAL;
+
+ if ( regs->spsr_el1 && !is_guest_pv64_psr(regs->spsr_el1)
)
+ return -EINVAL;
+ }
+#endif
vcpu_regs_user_to_hyp(v, regs);
--
1.8.4.rc3
Ian Campbell
2013-Nov-01 11:20 UTC
[PATCH 07/14] tools: check for libfdt when building for ARM
libxl is going to want this to aid in the creation of guest device tree blobs.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
Rerun autogen.sh when committing
---
tools/config.h.in | 3 +++
tools/configure | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
tools/configure.ac | 6 ++++++
3 files changed, 61 insertions(+)
diff --git a/tools/config.h.in b/tools/config.h.in
index b1c9531..015f2a1 100644
--- a/tools/config.h.in
+++ b/tools/config.h.in
@@ -9,6 +9,9 @@
/* Define to 1 if you have the `crypto'' library (-lcrypto). */
#undef HAVE_LIBCRYPTO
+/* Define to 1 if you have the `fdt'' library (-lfdt). */
+#undef HAVE_LIBFDT
+
/* Define to 1 if you have the `yajl'' library (-lyajl). */
#undef HAVE_LIBYAJL
diff --git a/tools/configure b/tools/configure
index 1da8652..2503990 100755
--- a/tools/configure
+++ b/tools/configure
@@ -7941,6 +7941,58 @@ fi
+# FDT is needed only on ARM
+case "$host_cpu" in
+arm*|aarch64)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fdt_create in
-lfdt" >&5
+$as_echo_n "checking for fdt_create in -lfdt... " >&6; }
+if ${ac_cv_lib_fdt_fdt_create+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lfdt $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char fdt_create ();
+int
+main ()
+{
+return fdt_create ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_fdt_fdt_create=yes
+else
+ ac_cv_lib_fdt_fdt_create=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result:
$ac_cv_lib_fdt_fdt_create" >&5
+$as_echo "$ac_cv_lib_fdt_fdt_create" >&6; }
+if test "x$ac_cv_lib_fdt_fdt_create" = xyes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBFDT 1
+_ACEOF
+
+ LIBS="-lfdt $LIBS"
+
+else
+ as_fn_error $? "Could not find libfdt" "$LINENO" 5
+fi
+
+esac
+
# Checks for header files.
for ac_header in yajl/yajl_version.h sys/eventfd.h
do :
diff --git a/tools/configure.ac b/tools/configure.ac
index 4f3c33a..c366efb 100644
--- a/tools/configure.ac
+++ b/tools/configure.ac
@@ -216,6 +216,12 @@ AC_CHECK_LIB([z], [deflateCopy], [], [AC_MSG_ERROR([Could
not find zlib])])
AC_CHECK_LIB([iconv], [libiconv_open], [libiconv="y"],
[libiconv="n"])
AC_SUBST(libiconv)
+# FDT is needed only on ARM
+case "$host_cpu" in
+arm*|aarch64)
+AC_CHECK_LIB([fdt], [fdt_create], [], [AC_MSG_ERROR([Could not find libfdt])])
+esac
+
# Checks for header files.
AC_CHECK_HEADERS([yajl/yajl_version.h sys/eventfd.h])
--
1.8.4.rc3
Ian Campbell
2013-Nov-01 11:20 UTC
[PATCH 08/14] xen: arm: define guest virtual platform in API headers
The tools and the hypervisor need to agree on various aspects of the guest
environment, such as interrupt numbers, memory layout, initial register values
for registers which are implementation defined etc. Therefore move the
associated defines into the public interface headers, or create them as
necessary. However these should not be exposed to guests, they should find
these things out via device tree or should not be relying on implementation
defined defaults.
Various bits of the hypervisor needed to change to configure dom0 with the real
platform values while using the virtual platform configuration for guests.
Arrange for this where appropriate and plumb through as needed.
We also need to expose some 64-bit values (e.g. PSR_GUEST64_INIT) for the
benefit of 32 bit toolstacks building 64 bit guests.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
tools/libxc/xc_dom_arm.c | 4 +--
xen/arch/arm/domain.c | 8 ++++--
xen/arch/arm/domain_build.c | 13 +++++----
xen/arch/arm/gic.c | 21 +++++++++-----
xen/arch/arm/psci.c | 2 +-
xen/arch/arm/traps.c | 2 +-
xen/arch/arm/vtimer.c | 13 ++++++---
xen/include/asm-arm/domain.h | 1 +
xen/include/asm-arm/event.h | 3 +-
xen/include/asm-arm/gic.h | 3 --
xen/include/asm-arm/processor.h | 7 -----
xen/include/asm-arm/psci.h | 5 ----
xen/include/public/arch-arm.h | 62 +++++++++++++++++++++++++++++++++--------
13 files changed, 93 insertions(+), 51 deletions(-)
diff --git a/tools/libxc/xc_dom_arm.c b/tools/libxc/xc_dom_arm.c
index df59ffb..9f3fdd3 100644
--- a/tools/libxc/xc_dom_arm.c
+++ b/tools/libxc/xc_dom_arm.c
@@ -126,13 +126,13 @@ static int vcpu_arm(struct xc_dom_image *dom, void *ptr)
*/
ctxt->user_regs.r2_usr = 0xffffffff;
- ctxt->sctlr = /* #define SCTLR_BASE */0x00c50078;
+ ctxt->sctlr = SCTLR_GUEST_INIT;
ctxt->ttbr0 = 0;
ctxt->ttbr1 = 0;
ctxt->ttbcr = 0; /* Defined Reset Value */
- ctxt->user_regs.cpsr =
PSR_ABT_MASK|PSR_FIQ_MASK|PSR_IRQ_MASK|PSR_MODE_SVC;
+ ctxt->user_regs.cpsr = PSR_GUEST32_INIT;
ctxt->flags = VGCF_online;
diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c
index 5ff7adf..2f57d01 100644
--- a/xen/arch/arm/domain.c
+++ b/xen/arch/arm/domain.c
@@ -461,7 +461,8 @@ int vcpu_initialise(struct vcpu *v)
if ( is_idle_vcpu(v) )
return rc;
- v->arch.sctlr = SCTLR_BASE;
+ v->arch.sctlr = SCTLR_GUEST_INIT;
+
/*
* By default exposes an SMP system with AFF0 set to the VCPU ID
* TODO: Handle multi-threading processor and cluster
@@ -525,6 +526,9 @@ int arch_domain_create(struct domain *d, unsigned int
domcr_flags)
if ( (rc = vcpu_domain_init(d)) != 0 )
goto fail;
+ /* XXX dom0 needs more intelligent selection of PPI */
+ d->arch.evtchn_irq = GUEST_EVTCHN_PPI;
+
/*
* Virtual UART is only used by linux early printk and decompress code.
* Only use it for dom0 because the linux kernel may not support
@@ -740,7 +744,7 @@ void vcpu_mark_events_pending(struct vcpu *v)
if ( already_pending )
return;
- vgic_vcpu_inject_irq(v, VGIC_IRQ_EVTCHN_CALLBACK, 1);
+ vgic_vcpu_inject_irq(v, v->domain->arch.evtchn_irq, 1);
}
/*
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 4348527..e501d2a 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -315,7 +315,8 @@ static int make_memory_node(struct domain *d,
return res;
}
-static int make_hypervisor_node(void *fdt, const struct dt_device_node *parent)
+static int make_hypervisor_node(struct domain *d,
+ void *fdt, const struct dt_device_node *parent)
{
const char compat[]
"xen,xen-"__stringify(XEN_VERSION)"."__stringify(XEN_SUBVERSION)"\0"
@@ -363,8 +364,8 @@ static int make_hypervisor_node(void *fdt, const struct
dt_device_node *parent)
*
* TODO: Handle correctly the cpumask
*/
- DPRINT(" Event channel interrupt to %u\n",
VGIC_IRQ_EVTCHN_CALLBACK);
- set_interrupt_ppi(intr, VGIC_IRQ_EVTCHN_CALLBACK, 0xf,
+ DPRINT(" Event channel interrupt to %u\n",
d->arch.evtchn_irq);
+ set_interrupt_ppi(intr, d->arch.evtchn_irq, 0xf,
DT_IRQ_TYPE_LEVEL_LOW);
res = fdt_property_interrupts(fdt, &intr, 1);
@@ -395,11 +396,11 @@ static int make_psci_node(void *fdt, const struct
dt_device_node *parent)
if ( res )
return res;
- res = fdt_property_cell(fdt, "cpu_off", __PSCI_cpu_off);
+ res = fdt_property_cell(fdt, "cpu_off", PSCI_cpu_off);
if ( res )
return res;
- res = fdt_property_cell(fdt, "cpu_on", __PSCI_cpu_on);
+ res = fdt_property_cell(fdt, "cpu_on", PSCI_cpu_on);
if ( res )
return res;
@@ -794,7 +795,7 @@ static int handle_node(struct domain *d, struct kernel_info
*kinfo,
if ( res )
return res;
- res = make_hypervisor_node(kinfo->fdt, np);
+ res = make_hypervisor_node(d, kinfo->fdt, np);
if ( res )
return res;
diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index 74575cd..33c6b8d 100644
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.c
@@ -717,7 +717,7 @@ int gic_events_need_delivery(void)
void gic_inject(void)
{
if ( vcpu_info(current, evtchn_upcall_pending) )
- vgic_vcpu_inject_irq(current, VGIC_IRQ_EVTCHN_CALLBACK, 1);
+ vgic_vcpu_inject_irq(current, current->domain->arch.evtchn_irq,
1);
gic_restore_pending_irqs(current);
if (!gic_events_need_delivery())
@@ -823,13 +823,20 @@ void gic_interrupt(struct cpu_user_regs *regs, int is_fiq)
int gicv_setup(struct domain *d)
{
- /* TODO: Retrieve distributor and CPU guest base address from the
- * guest DTS
- * For the moment we use dom0 DTS
+ /*
+ * Domain 0 gets the hardware address.
+ * Guests get the virtual platform layout.
*/
- d->arch.vgic.dbase = gic.dbase;
- d->arch.vgic.cbase = gic.cbase;
-
+ if ( d == dom0 )
+ {
+ d->arch.vgic.dbase = gic.dbase;
+ d->arch.vgic.cbase = gic.cbase;
+ }
+ else
+ {
+ d->arch.vgic.dbase = GUEST_GICD_BASE;
+ d->arch.vgic.cbase = GUEST_GICC_BASE;
+ }
d->arch.vgic.nr_lines = 0;
diff --git a/xen/arch/arm/psci.c b/xen/arch/arm/psci.c
index 6c3be47..c82884f 100644
--- a/xen/arch/arm/psci.c
+++ b/xen/arch/arm/psci.c
@@ -43,7 +43,7 @@ int do_psci_cpu_on(uint32_t vcpuid, register_t entry_point)
memset(ctxt, 0, sizeof(*ctxt));
ctxt->user_regs.pc64 = (u64) entry_point;
- ctxt->sctlr = SCTLR_BASE;
+ ctxt->sctlr = SCTLR_GUEST_INIT;
ctxt->ttbr0 = 0;
ctxt->ttbr1 = 0;
ctxt->ttbcr = 0; /* Defined Reset Value */
diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c
index 4c0fc32..4a0e216 100644
--- a/xen/arch/arm/traps.c
+++ b/xen/arch/arm/traps.c
@@ -862,7 +862,7 @@ typedef struct {
} arm_psci_t;
#define PSCI(_name, _nr_args) \
- [ __PSCI_ ## _name ] = { \
+ [ PSCI_ ## _name ] = { \
.fn = (arm_psci_fn_t) &do_psci_ ## _name, \
.nr_args = _nr_args, \
}
diff --git a/xen/arch/arm/vtimer.c b/xen/arch/arm/vtimer.c
index d58a630..f323453 100644
--- a/xen/arch/arm/vtimer.c
+++ b/xen/arch/arm/vtimer.c
@@ -54,21 +54,26 @@ int vcpu_domain_init(struct domain *d)
int vcpu_vtimer_init(struct vcpu *v)
{
struct vtimer *t = &v->arch.phys_timer;
+ bool_t d0 = (v->domain == dom0);
- /* TODO: Retrieve physical and virtual timer IRQ from the guest
- * DT. For the moment we use dom0 DT
+ /*
+ * Domain 0 uses the hardware interrupts, guests get the virtual platform.
*/
init_timer(&t->timer, phys_timer_expired, t, v->processor);
t->ctl = 0;
t->cval = NOW();
- t->irq = timer_dt_irq(TIMER_PHYS_NONSECURE_PPI)->irq;
+ t->irq = d0
+ ? timer_dt_irq(TIMER_PHYS_NONSECURE_PPI)->irq
+ : GUEST_TIMER_PHYS_NS_PPI;
t->v = v;
t = &v->arch.virt_timer;
init_timer(&t->timer, virt_timer_expired, t, v->processor);
t->ctl = 0;
- t->irq = timer_dt_irq(TIMER_VIRT_PPI)->irq;
+ t->irq = d0
+ ? timer_dt_irq(TIMER_VIRT_PPI)->irq
+ : GUEST_TIMER_VIRT_PPI;
t->v = v;
return 0;
diff --git a/xen/include/asm-arm/domain.h b/xen/include/asm-arm/domain.h
index 67bfbbc..53847a9 100644
--- a/xen/include/asm-arm/domain.h
+++ b/xen/include/asm-arm/domain.h
@@ -112,6 +112,7 @@ struct arch_domain
spinlock_t lock;
} vuart;
+ int evtchn_irq;
} __cacheline_aligned;
struct arch_vcpu
diff --git a/xen/include/asm-arm/event.h b/xen/include/asm-arm/event.h
index 04d854f..dd3ad13 100644
--- a/xen/include/asm-arm/event.h
+++ b/xen/include/asm-arm/event.h
@@ -15,7 +15,8 @@ static inline int vcpu_event_delivery_is_enabled(struct vcpu
*v)
static inline int local_events_need_delivery_nomask(void)
{
- struct pending_irq *p = irq_to_pending(current, VGIC_IRQ_EVTCHN_CALLBACK);
+ struct pending_irq *p = irq_to_pending(current,
+
current->domain->arch.evtchn_irq);
/* XXX: if the first interrupt has already been delivered, we should
* check whether any other interrupts with priority higher than the
diff --git a/xen/include/asm-arm/gic.h b/xen/include/asm-arm/gic.h
index 0a890be..41f0b3b 100644
--- a/xen/include/asm-arm/gic.h
+++ b/xen/include/asm-arm/gic.h
@@ -129,9 +129,6 @@
#define GICH_LR_CPUID_SHIFT 9
#define GICH_VTR_NRLRGS 0x3f
-/* XXX: write this into the DT */
-#define VGIC_IRQ_EVTCHN_CALLBACK 31
-
#ifndef __ASSEMBLY__
#include <xen/device_tree.h>
diff --git a/xen/include/asm-arm/processor.h b/xen/include/asm-arm/processor.h
index 5294421..3da3a3d 100644
--- a/xen/include/asm-arm/processor.h
+++ b/xen/include/asm-arm/processor.h
@@ -48,15 +48,8 @@
#define SCTLR_A (1<<1)
#define SCTLR_M (1<<0)
-#define SCTLR_BASE 0x00c50078
#define HSCTLR_BASE 0x30c51878
-#define PSR_GUEST32_INIT (PSR_ABT_MASK|PSR_FIQ_MASK|PSR_IRQ_MASK|PSR_MODE_SVC)
-
-#ifdef CONFIG_ARM_64
-#define PSR_GUEST64_INIT (PSR_ABT_MASK|PSR_FIQ_MASK|PSR_IRQ_MASK|PSR_MODE_EL1h)
-#endif
-
/* HCR Hyp Configuration Register */
#define HCR_RW (1<<31) /* Register Width, ARM64 only */
#define HCR_TGE (1<<27) /* Trap General Exceptions */
diff --git a/xen/include/asm-arm/psci.h b/xen/include/asm-arm/psci.h
index fdba636..67d4c35 100644
--- a/xen/include/asm-arm/psci.h
+++ b/xen/include/asm-arm/psci.h
@@ -6,11 +6,6 @@
#define PSCI_EINVAL -2
#define PSCI_DENIED -3
-#define __PSCI_cpu_suspend 0
-#define __PSCI_cpu_off 1
-#define __PSCI_cpu_on 2
-#define __PSCI_migrate 3
-
int do_psci_cpu_on(uint32_t vcpuid, register_t entry_point);
int do_psci_cpu_off(uint32_t power_state);
int do_psci_cpu_suspend(uint32_t power_state, register_t entry_point);
diff --git a/xen/include/public/arch-arm.h b/xen/include/public/arch-arm.h
index 8de13ed..9598f0a 100644
--- a/xen/include/public/arch-arm.h
+++ b/xen/include/public/arch-arm.h
@@ -268,8 +268,21 @@ typedef uint64_t xen_callback_t;
#endif
+#if defined(__XEN__) || defined(__XEN_TOOLS__)
+
/* PSR bits (CPSR, SPSR)*/
+#define PSR_THUMB (1<<5) /* Thumb Mode enable */
+#define PSR_FIQ_MASK (1<<6) /* Fast Interrupt mask */
+#define PSR_IRQ_MASK (1<<7) /* Interrupt mask */
+#define PSR_ABT_MASK (1<<8) /* Asynchronous Abort mask */
+#define PSR_BIG_ENDIAN (1<<9) /* Big Endian Mode */
+#ifdef __aarch64__ /* For Aarch64 bit 9 is repurposed. */
+#define PSR_DBG_MASK (1<<9)
+#endif
+#define PSR_IT_MASK (0x0600fc00) /* Thumb If-Then Mask */
+#define PSR_JAZELLE (1<<24) /* Jazelle Mode */
+
/* 32 bit modes */
#define PSR_MODE_USR 0x10
#define PSR_MODE_FIQ 0x11
@@ -281,8 +294,8 @@ typedef uint64_t xen_callback_t;
#define PSR_MODE_UND 0x1b
#define PSR_MODE_SYS 0x1f
-/* 64 bit modes */
-#ifdef __aarch64__
+#define PSR_GUEST32_INIT (PSR_ABT_MASK|PSR_FIQ_MASK|PSR_IRQ_MASK|PSR_MODE_SVC)
+
#undef PSR_MODE_BIT
#undef PSR_MODE_EL3h
#undef PSR_MODE_EL3t
@@ -300,18 +313,43 @@ typedef uint64_t xen_callback_t;
#define PSR_MODE_EL1h 0x05
#define PSR_MODE_EL1t 0x04
#define PSR_MODE_EL0t 0x00
-#endif
-#define PSR_THUMB (1<<5) /* Thumb Mode enable */
-#define PSR_FIQ_MASK (1<<6) /* Fast Interrupt mask */
-#define PSR_IRQ_MASK (1<<7) /* Interrupt mask */
-#define PSR_ABT_MASK (1<<8) /* Asynchronous Abort mask */
-#define PSR_BIG_ENDIAN (1<<9) /* Big Endian Mode */
-#ifdef __aarch64__ /* For Aarch64 bit 9 is repurposed. */
-#define PSR_DBG_MASK (1<<9)
+#define PSR_GUEST64_INIT (PSR_ABT_MASK|PSR_FIQ_MASK|PSR_IRQ_MASK|PSR_MODE_EL1h)
+
+#define SCTLR_GUEST_INIT 0x00c50078
+
+/*
+ * Virtual machine platform (memory layout, interrupts)
+ *
+ * These are defined for consistency between the tools and the
+ * hypervisor. Guests must not rely on these hardcoded values but
+ * should instead use the FDT.
+ */
+
+/* Physical Address Space */
+#define GUEST_GICD_BASE 0x2c001000ULL
+#define GUEST_GICD_SIZE 0x1000ULL
+#define GUEST_GICC_BASE 0x2c002000ULL
+#define GUEST_GICC_SIZE 0x100ULL
+
+#define GUEST_RAM_BASE 0x80000000ULL
+
+#define GUEST_GNTTAB_BASE 0xb0000000ULL
+#define GUEST_GNTTAB_SIZE 0x00020000ULL
+
+/* Interrupts */
+#define GUEST_TIMER_VIRT_PPI 27
+#define GUEST_TIMER_PHYS_S_PPI 29
+#define GUEST_TIMER_PHYS_NS_PPI 30
+#define GUEST_EVTCHN_PPI 31
+
+/* PSCI functions */
+#define PSCI_cpu_suspend 0
+#define PSCI_cpu_off 1
+#define PSCI_cpu_on 2
+#define PSCI_migrate 3
+
#endif
-#define PSR_IT_MASK (0x0600fc00) /* Thumb If-Then Mask */
-#define PSR_JAZELLE (1<<24) /* Jazelle Mode */
#endif /* __XEN_PUBLIC_ARCH_ARM_H__ */
--
1.8.4.rc3
Ian Campbell
2013-Nov-01 11:20 UTC
[PATCH 09/14] libxc: arm: rename various bits of zimage load with 32 suffix
Making room for a 64 bit implementation.
Also fix a typo and stop refering to it as a bzImage, which is an x86-ism.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
---
tools/libxc/xc_dom_armzimageloader.c | 44 +++++++++++++++++++++---------------
1 file changed, 26 insertions(+), 18 deletions(-)
diff --git a/tools/libxc/xc_dom_armzimageloader.c
b/tools/libxc/xc_dom_armzimageloader.c
index 54728b8..b693390 100644
--- a/tools/libxc/xc_dom_armzimageloader.c
+++ b/tools/libxc/xc_dom_armzimageloader.c
@@ -36,12 +36,6 @@
*/
#define GUEST_RAM_BASE 0x80000000
-#define ZIMAGE_MAGIC_OFFSET 0x24
-#define ZIMAGE_START_OFFSET 0x28
-#define ZIMAGE_END_OFFSET 0x2c
-
-#define ZIMAGE_MAGIC 0x016f2818
-
struct minimal_dtb_header {
uint32_t magic;
uint32_t total_size;
@@ -50,7 +44,17 @@ struct minimal_dtb_header {
#define DTB_MAGIC 0xd00dfeed
-static int xc_dom_probe_zimage_kernel(struct xc_dom_image *dom)
+/* ------------------------------------------------------------ */
+/* 32-bit zImage Support */
+/* ------------------------------------------------------------ */
+
+#define ZIMAGE32_MAGIC_OFFSET 0x24
+#define ZIMAGE32_START_OFFSET 0x28
+#define ZIMAGE32_END_OFFSET 0x2c
+
+#define ZIMAGE32_MAGIC 0x016f2818
+
+static int xc_dom_probe_zimage32_kernel(struct xc_dom_image *dom)
{
uint32_t *zimage;
uint32_t end;
@@ -69,13 +73,13 @@ static int xc_dom_probe_zimage_kernel(struct xc_dom_image
*dom)
}
zimage = (uint32_t *)dom->kernel_blob;
- if ( zimage[ZIMAGE_MAGIC_OFFSET/4] != ZIMAGE_MAGIC )
+ if ( zimage[ZIMAGE32_MAGIC_OFFSET/4] != ZIMAGE32_MAGIC )
{
- xc_dom_printf(dom->xch, "%s: kernel is not a bzImage",
__FUNCTION__);
+ xc_dom_printf(dom->xch, "%s: kernel is not an arm32
zImage", __FUNCTION__);
return -EINVAL;
}
- end = zimage[ZIMAGE_END_OFFSET/4];
+ end = zimage[ZIMAGE32_END_OFFSET/4];
/*
* Check for an appended DTB.
@@ -94,7 +98,7 @@ static int xc_dom_probe_zimage_kernel(struct xc_dom_image
*dom)
return 0;
}
-static int xc_dom_parse_zimage_kernel(struct xc_dom_image *dom)
+static int xc_dom_parse_zimage32_kernel(struct xc_dom_image *dom)
{
uint32_t *zimage;
uint32_t start, entry_addr;
@@ -111,7 +115,7 @@ static int xc_dom_parse_zimage_kernel(struct xc_dom_image
*dom)
v_start = rambase + 0x8000;
v_end = v_start + dom->kernel_size;
- start = zimage[ZIMAGE_START_OFFSET/4];
+ start = zimage[ZIMAGE32_START_OFFSET/4];
if (start == 0)
entry_addr = v_start;
@@ -134,6 +138,10 @@ static int xc_dom_parse_zimage_kernel(struct xc_dom_image
*dom)
return 0;
}
+/* ------------------------------------------------------------ */
+/* Common zImage Support */
+/* ------------------------------------------------------------ */
+
static int xc_dom_load_zimage_kernel(struct xc_dom_image *dom)
{
void *dst;
@@ -148,7 +156,7 @@ static int xc_dom_load_zimage_kernel(struct xc_dom_image
*dom)
return -1;
}
- DOMPRINTF("%s: kernel sed %#"PRIx64"-%#"PRIx64,
+ DOMPRINTF("%s: kernel seg %#"PRIx64"-%#"PRIx64,
__func__, dom->kernel_seg.vstart, dom->kernel_seg.vend);
DOMPRINTF("%s: copy %zd bytes from blob %p to dst %p",
__func__, dom->kernel_size, dom->kernel_blob, dst);
@@ -158,16 +166,16 @@ static int xc_dom_load_zimage_kernel(struct xc_dom_image
*dom)
return 0;
}
-static struct xc_dom_loader zimage_loader = {
- .name = "Linux zImage (ARM)",
- .probe = xc_dom_probe_zimage_kernel,
- .parser = xc_dom_parse_zimage_kernel,
+static struct xc_dom_loader zimage32_loader = {
+ .name = "Linux zImage (ARM32)",
+ .probe = xc_dom_probe_zimage32_kernel,
+ .parser = xc_dom_parse_zimage32_kernel,
.loader = xc_dom_load_zimage_kernel,
};
static void __init register_loader(void)
{
- xc_dom_register_loader(&zimage_loader);
+ xc_dom_register_loader(&zimage32_loader);
}
/*
--
1.8.4.rc3
Ian Campbell
2013-Nov-01 11:20 UTC
[PATCH 10/14] libxc: allow caller to specify guest rambase rather than hardcoding
It''s still hardcoded but it could now be plausibly be made variable.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
tools/libxc/xc_dom.h | 1 +
tools/libxc/xc_dom_armzimageloader.c | 12 +-----------
tools/libxc/xc_dom_core.c | 8 ++++++++
tools/libxl/libxl_dom.c | 6 ++++++
4 files changed, 16 insertions(+), 11 deletions(-)
diff --git a/tools/libxc/xc_dom.h b/tools/libxc/xc_dom.h
index 86e23ee..ed49aa7 100644
--- a/tools/libxc/xc_dom.h
+++ b/tools/libxc/xc_dom.h
@@ -197,6 +197,7 @@ struct xc_dom_image *xc_dom_allocate(xc_interface *xch,
const char *cmdline, const char
*features);
void xc_dom_release_phys(struct xc_dom_image *dom);
void xc_dom_release(struct xc_dom_image *dom);
+int xc_dom_rambase_init(struct xc_dom_image *dom, uint64_t rambase);
int xc_dom_mem_init(struct xc_dom_image *dom, unsigned int mem_mb);
/* Set this larger if you have enormous ramdisks/kernels. Note that
diff --git a/tools/libxc/xc_dom_armzimageloader.c
b/tools/libxc/xc_dom_armzimageloader.c
index b693390..4e3f7ae 100644
--- a/tools/libxc/xc_dom_armzimageloader.c
+++ b/tools/libxc/xc_dom_armzimageloader.c
@@ -30,12 +30,6 @@
#include <arpa/inet.h> /* XXX ntohl is not the right function... */
-/*
- * Guest virtual RAM starts here. This must be consistent with the DTB
- * appended to the guest kernel.
- */
-#define GUEST_RAM_BASE 0x80000000
-
struct minimal_dtb_header {
uint32_t magic;
uint32_t total_size;
@@ -103,14 +97,12 @@ static int xc_dom_parse_zimage32_kernel(struct xc_dom_image
*dom)
uint32_t *zimage;
uint32_t start, entry_addr;
uint64_t v_start, v_end;
- uint64_t rambase = GUEST_RAM_BASE;
+ uint64_t rambase = dom->rambase_pfn << XC_PAGE_SHIFT;
DOMPRINTF_CALLED(dom->xch);
zimage = (uint32_t *)dom->kernel_blob;
- dom->rambase_pfn = rambase >> XC_PAGE_SHIFT;
-
/* Do not load kernel at the very first RAM address */
v_start = rambase + 0x8000;
v_end = v_start + dom->kernel_size;
@@ -130,8 +122,6 @@ static int xc_dom_parse_zimage32_kernel(struct xc_dom_image
*dom)
dom->parms.virt_base = rambase;
dom->guest_type = "xen-3.0-armv7l";
- DOMPRINTF("%s: %s: RAM starts at %"PRI_xen_pfn,
- __FUNCTION__, dom->guest_type, dom->rambase_pfn);
DOMPRINTF("%s: %s: 0x%" PRIx64 " -> 0x%" PRIx64
"",
__FUNCTION__, dom->guest_type,
dom->kernel_seg.vstart, dom->kernel_seg.vend);
diff --git a/tools/libxc/xc_dom_core.c b/tools/libxc/xc_dom_core.c
index 3bf51ef..6aa0176 100644
--- a/tools/libxc/xc_dom_core.c
+++ b/tools/libxc/xc_dom_core.c
@@ -785,6 +785,14 @@ int xc_dom_parse_image(struct xc_dom_image *dom)
return -1;
}
+int xc_dom_rambase_init(struct xc_dom_image *dom, uint64_t rambase)
+{
+ dom->rambase_pfn = rambase >> XC_PAGE_SHIFT;
+ DOMPRINTF("%s: RAM starts at %"PRI_xen_pfn,
+ __FUNCTION__, dom->rambase_pfn);
+ return 0;
+}
+
int xc_dom_mem_init(struct xc_dom_image *dom, unsigned int mem_mb)
{
unsigned int page_shift;
diff --git a/tools/libxl/libxl_dom.c b/tools/libxl/libxl_dom.c
index 1873459..ff78d20 100644
--- a/tools/libxl/libxl_dom.c
+++ b/tools/libxl/libxl_dom.c
@@ -387,6 +387,12 @@ int libxl__build_pv(libxl__gc *gc, uint32_t domid,
LOGE(ERROR, "xc_dom_boot_xen_init failed");
goto out;
}
+#ifdef GUEST_RAM_BASE
+ if ( (ret = xc_dom_rambase_init(dom, GUEST_RAM_BASE)) != 0 ) {
+ LOGE(ERROR, "xc_dom_rambase failed");
+ goto out;
+ }
+#endif
if ( (ret = xc_dom_parse_image(dom)) != 0 ) {
LOGE(ERROR, "xc_dom_parse_image failed");
goto out;
--
1.8.4.rc3
Ian Campbell
2013-Nov-01 11:20 UTC
[PATCH 11/14] libxc: allow passing a device tree blob to the guest
TODO: placement is rather simplistic
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
tools/libxc/xc_dom.h | 8 ++++++++
tools/libxc/xc_dom_arm.c | 15 ++++++++++++++-
tools/libxc/xc_dom_core.c | 48 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 70 insertions(+), 1 deletion(-)
diff --git a/tools/libxc/xc_dom.h b/tools/libxc/xc_dom.h
index ed49aa7..bf56436 100644
--- a/tools/libxc/xc_dom.h
+++ b/tools/libxc/xc_dom.h
@@ -54,9 +54,12 @@ struct xc_dom_image {
size_t kernel_size;
void *ramdisk_blob;
size_t ramdisk_size;
+ void *devicetree_blob;
+ size_t devicetree_size;
size_t max_kernel_size;
size_t max_ramdisk_size;
+ size_t max_devicetree_size;
/* arguments and parameters */
char *cmdline;
@@ -217,6 +220,8 @@ int xc_dom_kernel_max_size(struct xc_dom_image *dom, size_t
sz);
int xc_dom_ramdisk_check_size(struct xc_dom_image *dom, size_t sz);
int xc_dom_ramdisk_max_size(struct xc_dom_image *dom, size_t sz);
+int xc_dom_devicetree_max_size(struct xc_dom_image *dom, size_t sz);
+
size_t xc_dom_check_gzip(xc_interface *xch,
void *blob, size_t ziplen);
int xc_dom_do_gunzip(xc_interface *xch,
@@ -229,6 +234,9 @@ int xc_dom_kernel_mem(struct xc_dom_image *dom, const void
*mem,
size_t memsize);
int xc_dom_ramdisk_mem(struct xc_dom_image *dom, const void *mem,
size_t memsize);
+int xc_dom_devicetree_file(struct xc_dom_image *dom, const char *filename);
+int xc_dom_devicetree_mem(struct xc_dom_image *dom, const void *mem,
+ size_t memsize);
int xc_dom_parse_image(struct xc_dom_image *dom);
struct xc_dom_arch *xc_dom_find_arch_hooks(xc_interface *xch, char
*guest_type);
diff --git a/tools/libxc/xc_dom_arm.c b/tools/libxc/xc_dom_arm.c
index 9f3fdd3..ee2c9cc 100644
--- a/tools/libxc/xc_dom_arm.c
+++ b/tools/libxc/xc_dom_arm.c
@@ -124,7 +124,8 @@ static int vcpu_arm(struct xc_dom_image *dom, void *ptr)
* using CONFIG_ARM_APPENDED_DTB. Ensure that r2 does not look
* like a valid pointer to a set of ATAGS or a DTB.
*/
- ctxt->user_regs.r2_usr = 0xffffffff;
+ ctxt->user_regs.r2_usr = dom->devicetree_blob ?
+ dom->devicetree_seg.vstart : 0xffffffff;
ctxt->sctlr = SCTLR_GUEST_INIT;
@@ -191,6 +192,18 @@ int arch_setup_meminit(struct xc_dom_image *dom)
0, 0, &dom->p2m_host[i]);
}
+ if ( dom->devicetree_blob )
+ {
+ uint64_t rambase = dom->rambase_pfn << XC_PAGE_SHIFT;
+ /* XXX intelligent placement */
+ dom->devicetree_seg.vstart = rambase + 127*1024*1024;
+ dom->devicetree_seg.vend + dom->devicetree_seg.vstart
+ dom->devicetree_size;
+ DOMPRINTF("%s: devicetree: 0x%" PRIx64 " -> 0x%"
PRIx64 "",
+ __FUNCTION__,
+ dom->devicetree_seg.vstart, dom->devicetree_seg.vend);
+ }
+
return 0;
}
diff --git a/tools/libxc/xc_dom_core.c b/tools/libxc/xc_dom_core.c
index 6aa0176..338c9a1 100644
--- a/tools/libxc/xc_dom_core.c
+++ b/tools/libxc/xc_dom_core.c
@@ -671,6 +671,7 @@ struct xc_dom_image *xc_dom_allocate(xc_interface *xch,
dom->max_kernel_size = XC_DOM_DECOMPRESS_MAX;
dom->max_ramdisk_size = XC_DOM_DECOMPRESS_MAX;
+ dom->max_devicetree_size = XC_DOM_DECOMPRESS_MAX;
if ( cmdline )
dom->cmdline = xc_dom_strdup(dom, cmdline);
@@ -706,6 +707,13 @@ int xc_dom_ramdisk_max_size(struct xc_dom_image *dom,
size_t sz)
return 0;
}
+int xc_dom_devicetree_max_size(struct xc_dom_image *dom, size_t sz)
+{
+ DOMPRINTF("%s: devicetree_max_size=%zx", __FUNCTION__, sz);
+ dom->max_devicetree_size = sz;
+ return 0;
+}
+
int xc_dom_kernel_file(struct xc_dom_image *dom, const char *filename)
{
DOMPRINTF("%s: filename=\"%s\"", __FUNCTION__,
filename);
@@ -729,6 +737,18 @@ int xc_dom_ramdisk_file(struct xc_dom_image *dom, const
char *filename)
return 0;
}
+int xc_dom_devicetree_file(struct xc_dom_image *dom, const char *filename)
+{
+ DOMPRINTF("%s: filename=\"%s\"", __FUNCTION__,
filename);
+ dom->devicetree_blob + xc_dom_malloc_filemap(dom, filename,
&dom->devicetree_size,
+ dom->max_devicetree_size);
+
+ if ( dom->devicetree_blob == NULL )
+ return -1;
+ return 0;
+}
+
int xc_dom_kernel_mem(struct xc_dom_image *dom, const void *mem, size_t
memsize)
{
DOMPRINTF_CALLED(dom->xch);
@@ -747,6 +767,15 @@ int xc_dom_ramdisk_mem(struct xc_dom_image *dom, const void
*mem,
return 0;
}
+int xc_dom_devicetree_mem(struct xc_dom_image *dom, const void *mem,
+ size_t memsize)
+{
+ DOMPRINTF_CALLED(dom->xch);
+ dom->devicetree_blob = (void *)mem;
+ dom->devicetree_size = memsize;
+ return 0;
+}
+
int xc_dom_parse_image(struct xc_dom_image *dom)
{
int i;
@@ -916,6 +945,25 @@ int xc_dom_build_image(struct xc_dom_image *dom)
memcpy(ramdiskmap, dom->ramdisk_blob, dom->ramdisk_size);
}
+ /* load devicetree */
+ if ( dom->devicetree_blob )
+ {
+ void *devicetreemap;
+
+ if ( xc_dom_alloc_segment(dom, &dom->devicetree_seg,
"devicetree",
+ dom->devicetree_seg.vstart,
+ dom->devicetree_size) != 0 )
+ goto err;
+ devicetreemap = xc_dom_seg_to_ptr(dom, &dom->devicetree_seg);
+ if ( devicetreemap == NULL )
+ {
+ DOMPRINTF("%s: xc_dom_seg_to_ptr(dom,
&dom->devicetree_seg) => NULL",
+ __FUNCTION__);
+ goto err;
+ }
+ memcpy(devicetreemap, dom->devicetree_blob,
dom->devicetree_size);
+ }
+
/* allocate other pages */
if ( dom->arch_hooks->alloc_magic_pages(dom) != 0 )
goto err;
--
1.8.4.rc3
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
tools/libxc/xc_dom_armzimageloader.c | 88 ++++++++++++++++++++++++++++++++++++
1 file changed, 88 insertions(+)
diff --git a/tools/libxc/xc_dom_armzimageloader.c
b/tools/libxc/xc_dom_armzimageloader.c
index 4e3f7ae..609d3a0 100644
--- a/tools/libxc/xc_dom_armzimageloader.c
+++ b/tools/libxc/xc_dom_armzimageloader.c
@@ -129,6 +129,86 @@ static int xc_dom_parse_zimage32_kernel(struct xc_dom_image
*dom)
}
/* ------------------------------------------------------------ */
+/* 64-bit zImage Support */
+/* ------------------------------------------------------------ */
+
+#define ZIMAGE64_MAGIC_V0 0x14000008
+#define ZIMAGE64_MAGIC_V1 0x644d5241 /* "ARM\x64" */
+
+/* linux/Documentation/arm64/booting.txt */
+struct zimage64_hdr {
+ uint32_t magic0;
+ uint32_t res0;
+ uint64_t text_offset; /* Image load offset */
+ uint64_t res1;
+ uint64_t res2;
+ /* zImage V1 only from here */
+ uint64_t res3;
+ uint64_t res4;
+ uint64_t res5;
+ uint32_t magic1;
+ uint32_t res6;
+};
+static int xc_dom_probe_zimage64_kernel(struct xc_dom_image *dom)
+{
+ struct zimage64_hdr *zimage;
+
+ if ( dom->kernel_blob == NULL )
+ {
+ xc_dom_panic(dom->xch, XC_INTERNAL_ERROR,
+ "%s: no kernel image loaded", __FUNCTION__);
+ return -EINVAL;
+ }
+
+ if ( dom->kernel_size < sizeof(*zimage) )
+ {
+ xc_dom_printf(dom->xch, "%s: kernel image too small",
__FUNCTION__);
+ return -EINVAL;
+ }
+
+ zimage = dom->kernel_blob;
+ if ( zimage->magic0 != ZIMAGE64_MAGIC_V0 &&
+ zimage->magic1 != ZIMAGE64_MAGIC_V1 )
+ {
+ xc_dom_printf(dom->xch, "%s: kernel is not an arm64
Image", __FUNCTION__);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int xc_dom_parse_zimage64_kernel(struct xc_dom_image *dom)
+{
+ struct zimage64_hdr *zimage;
+ uint32_t entry_addr;
+ uint64_t v_start, v_end;
+ uint64_t rambase = dom->rambase_pfn << XC_PAGE_SHIFT;
+
+ DOMPRINTF_CALLED(dom->xch);
+
+ zimage = dom->kernel_blob;
+
+ v_start = rambase + zimage->text_offset;
+ v_end = v_start + dom->kernel_size;
+
+ entry_addr = v_start;
+
+ /* find kernel segment */
+ dom->kernel_seg.vstart = v_start;
+ dom->kernel_seg.vend = v_start + dom->kernel_size;
+
+ dom->parms.virt_entry = entry_addr;
+ dom->parms.virt_base = rambase;
+
+ dom->guest_type = "xen-3.0-aarch64";
+ DOMPRINTF("%s: %s: 0x%" PRIx64 " -> 0x%" PRIx64
"",
+ __FUNCTION__, dom->guest_type,
+ dom->kernel_seg.vstart, dom->kernel_seg.vend);
+
+ return 0;
+}
+
+/* ------------------------------------------------------------ */
/* Common zImage Support */
/* ------------------------------------------------------------ */
@@ -163,9 +243,17 @@ static struct xc_dom_loader zimage32_loader = {
.loader = xc_dom_load_zimage_kernel,
};
+static struct xc_dom_loader zimage64_loader = {
+ .name = "Linux zImage (ARM64)",
+ .probe = xc_dom_probe_zimage64_kernel,
+ .parser = xc_dom_parse_zimage64_kernel,
+ .loader = xc_dom_load_zimage_kernel,
+};
+
static void __init register_loader(void)
{
xc_dom_register_loader(&zimage32_loader);
+ xc_dom_register_loader(&zimage64_loader);
}
/*
--
1.8.4.rc3
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
tools/libxc/xc_dom_arm.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 88 insertions(+), 2 deletions(-)
diff --git a/tools/libxc/xc_dom_arm.c b/tools/libxc/xc_dom_arm.c
index ee2c9cc..03db256 100644
--- a/tools/libxc/xc_dom_arm.c
+++ b/tools/libxc/xc_dom_arm.c
@@ -105,7 +105,7 @@ static int shared_info_arm(struct xc_dom_image *dom, void
*ptr)
/* ------------------------------------------------------------------------ */
-static int vcpu_arm(struct xc_dom_image *dom, void *ptr)
+static int vcpu_arm32(struct xc_dom_image *dom, void *ptr)
{
vcpu_guest_context_t *ctxt = ptr;
@@ -143,6 +143,41 @@ static int vcpu_arm(struct xc_dom_image *dom, void *ptr)
return 0;
}
+static int vcpu_arm64(struct xc_dom_image *dom, void *ptr)
+{
+ vcpu_guest_context_t *ctxt = ptr;
+
+ DOMPRINTF_CALLED(dom->xch);
+ /* clear everything */
+ memset(ctxt, 0, sizeof(*ctxt));
+
+ ctxt->user_regs.pc64 = dom->parms.virt_entry;
+
+ /* Linux boot protocol. See linux.Documentation/arm/Booting. */
+ ctxt->user_regs.x0 = dom->devicetree_blob ?
+ dom->devicetree_seg.vstart : 0xffffffff;
+ ctxt->user_regs.x1 = 0;
+ ctxt->user_regs.x2 = 0;
+ ctxt->user_regs.x3 = 0;
+
+ DOMPRINTF("DTB %"PRIx64, ctxt->user_regs.x0);
+
+ ctxt->sctlr = SCTLR_GUEST_INIT;
+
+ ctxt->ttbr0 = 0;
+ ctxt->ttbr1 = 0;
+ ctxt->ttbcr = 0; /* Defined Reset Value */
+
+ ctxt->user_regs.cpsr = PSR_GUEST64_INIT;
+
+ ctxt->flags = VGCF_online;
+
+ DOMPRINTF("Initial state CPSR %#"PRIx32" PC %#"PRIx64,
+ ctxt->user_regs.cpsr, ctxt->user_regs.pc64);
+
+ return 0;
+}
+
/* ------------------------------------------------------------------------ */
static struct xc_dom_arch xc_dom_32 = {
@@ -155,12 +190,59 @@ static struct xc_dom_arch xc_dom_32 = {
.setup_pgtables = setup_pgtables_arm,
.start_info = start_info_arm,
.shared_info = shared_info_arm,
- .vcpu = vcpu_arm,
+ .vcpu = vcpu_arm32,
+};
+
+static struct xc_dom_arch xc_dom_64 = {
+ .guest_type = "xen-3.0-aarch64",
+ .native_protocol = XEN_IO_PROTO_ABI_ARM,
+ .page_shift = PAGE_SHIFT_ARM,
+ .sizeof_pfn = 8,
+ .alloc_magic_pages = alloc_magic_pages,
+ .count_pgtables = count_pgtables_arm,
+ .setup_pgtables = setup_pgtables_arm,
+ .start_info = start_info_arm,
+ .shared_info = shared_info_arm,
+ .vcpu = vcpu_arm64,
};
static void __init register_arch_hooks(void)
{
xc_dom_register_arch_hooks(&xc_dom_32);
+ xc_dom_register_arch_hooks(&xc_dom_64);
+}
+
+static int set_mode(xc_interface *xch, domid_t domid, char *guest_type)
+{
+ static const struct {
+ char *guest;
+ uint32_t size;
+ } types[] = {
+ { "xen-3.0-aarch64", 64 },
+ { "xen-3.0-armv7l", 32 },
+ };
+ DECLARE_DOMCTL;
+ int i,rc;
+
+ domctl.domain = domid;
+ domctl.cmd = XEN_DOMCTL_set_address_size;
+ for ( i = 0; i < sizeof(types)/sizeof(types[0]); i++ )
+ if ( !strcmp(types[i].guest, guest_type) )
+ domctl.u.address_size.size = types[i].size;
+ if ( domctl.u.address_size.size == 0 )
+ {
+ xc_dom_printf(xch, "%s: warning: unknown guest type %s",
+ __FUNCTION__, guest_type);
+ return -EINVAL;
+ }
+
+ xc_dom_printf(xch, "%s: guest %s, address size %" PRId32
"", __FUNCTION__,
+ guest_type, domctl.u.address_size.size);
+ rc = do_domctl(xch, &domctl);
+ if ( rc != 0 )
+ xc_dom_printf(xch, "%s: warning: failed (rc=%d)",
+ __FUNCTION__, rc);
+ return rc;
}
int arch_setup_meminit(struct xc_dom_image *dom)
@@ -168,6 +250,10 @@ int arch_setup_meminit(struct xc_dom_image *dom)
int rc;
xen_pfn_t pfn, allocsz, i;
+ rc = set_mode(dom->xch, dom->guest_domid, dom->guest_type);
+ if ( rc )
+ return rc;
+
dom->shadow_enabled = 1;
dom->p2m_host = xc_dom_malloc(dom, sizeof(xen_pfn_t) *
dom->total_pages);
--
1.8.4.rc3
Ian Campbell
2013-Nov-01 11:20 UTC
[PATCH 14/14] libxl: build a device tree for ARM guests
Uses xc_dom_devicetree_mem which was just added. The call to this needs to be
carefully sequenced to be after xc_dom_parse_image (so we can tell which kind
of guest we are building, although we don''t use this yet) and before
xc_dom_mem_init which tries to decide where to place the FDT in guest RAM.
Removes libxl_noarch which would only have been used by IA64 after this
change. Remove IA64 as part of this patch.
There is no attempt to expose this as a configuration setting for the user.
Includes a debug hook to dump the dtb to a file for inspection.
TODO:
- v7 CPU compat is hardcoded to cortex-a15 -- may need to define something more
generic via mach-virt dt bindngs?
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
v2: base addresses, irq, evtchn etc stuff is now from public API headers,
avoiding the need to introduce domctls etc until we want to make them
dynamic.
fix memory node
Improve libfdt error handling, especially for FDT_ERR_NOSPACE.
Derive guest CPU and timer compatiblity nodes from the guest type.
---
tools/libxl/Makefile | 6 +-
tools/libxl/libxl_arch.h | 4 +
tools/libxl/libxl_arm.c | 557 +++++++++++++++++++++++++++++++++++++++++++++
tools/libxl/libxl_dom.c | 4 +
tools/libxl/libxl_noarch.c | 8 -
tools/libxl/libxl_x86.c | 7 +
6 files changed, 576 insertions(+), 10 deletions(-)
create mode 100644 tools/libxl/libxl_arm.c
delete mode 100644 tools/libxl/libxl_noarch.c
diff --git a/tools/libxl/Makefile b/tools/libxl/Makefile
index cf214bb..d8495bb 100644
--- a/tools/libxl/Makefile
+++ b/tools/libxl/Makefile
@@ -28,9 +28,12 @@ CFLAGS_LIBXL += $(CFLAGS_libxenstore)
CFLAGS_LIBXL += $(CFLAGS_libblktapctl)
CFLAGS_LIBXL += -Wshadow
+LIBXL_LIBS-$(CONFIG_ARM) += -lfdt
+
CFLAGS += $(PTHREAD_CFLAGS)
LDFLAGS += $(PTHREAD_LDFLAGS)
LIBXL_LIBS += $(PTHREAD_LIBS)
+LIBXL_LIBS += $(LIBXL_LIBS-y)
LIBXLU_LIBS
@@ -41,8 +44,7 @@ else
LIBXL_OBJS-y += libxl_noblktap2.o
endif
LIBXL_OBJS-$(CONFIG_X86) += libxl_cpuid.o libxl_x86.o
-LIBXL_OBJS-$(CONFIG_IA64) += libxl_nocpuid.o libxl_noarch.o
-LIBXL_OBJS-$(CONFIG_ARM) += libxl_nocpuid.o libxl_noarch.o
+LIBXL_OBJS-$(CONFIG_ARM) += libxl_nocpuid.o libxl_arm.o
ifeq ($(CONFIG_NetBSD),y)
LIBXL_OBJS-y += libxl_netbsd.o
diff --git a/tools/libxl/libxl_arch.h b/tools/libxl/libxl_arch.h
index abe6685..3de2d76 100644
--- a/tools/libxl/libxl_arch.h
+++ b/tools/libxl/libxl_arch.h
@@ -19,4 +19,8 @@
int libxl__arch_domain_create(libxl__gc *gc, libxl_domain_config *d_config,
uint32_t domid);
+/* */
+int libxl__arch_domain_configure(libxl__gc *gc,
+ libxl_domain_build_info *info,
+ struct xc_dom_image *dom);
#endif
diff --git a/tools/libxl/libxl_arm.c b/tools/libxl/libxl_arm.c
new file mode 100644
index 0000000..f258e9b
--- /dev/null
+++ b/tools/libxl/libxl_arm.c
@@ -0,0 +1,557 @@
+#include "libxl_internal.h"
+#include "libxl_arch.h"
+
+#include <xc_dom.h>
+#include <libfdt.h>
+#include <assert.h>
+
+int libxl__arch_domain_create(libxl__gc *gc, libxl_domain_config *d_config,
+ uint32_t domid)
+{
+ return 0;
+}
+
+static struct arch_info {
+ const char *guest_type;
+ const char *timer_compat;
+ const char *cpu_compat;
+} arch_info[] = {
+ {"xen-3.0-armv7l", "arm,armv7-timer",
"arm,cortex-a15" },
+ {"xen-3.0-aarch64", "arm,armv8-timer",
"arm,armv8" },
+};
+
+enum {
+ PHANDLE_NONE = 0,
+ PHANDLE_GIC,
+};
+
+typedef uint32_t __be32;
+typedef __be32 gic_interrupt_t[3];
+
+#define ROOT_ADDRESS_CELLS 2
+#define ROOT_SIZE_CELLS 2
+
+static void set_cell(__be32 **cellp, int size, uint64_t val)
+{
+ int cells = size;
+
+ while ( size-- )
+ {
+ (*cellp)[size] = cpu_to_fdt32(val);
+ val >>= 32;
+ }
+
+ (*cellp) += cells;
+}
+
+static void set_interrupt_ppi(gic_interrupt_t interrupt, unsigned int irq,
+ unsigned int cpumask, unsigned int level)
+{
+ __be32 *cells = interrupt;
+
+ /* See linux Documentation/devictree/bindings/arm/gic.txt */
+ set_cell(&cells, 1, 1); /* is a PPI */
+ set_cell(&cells, 1, irq - 16); /* PPIs start at 16 */
+ set_cell(&cells, 1, (cpumask << 8) | level);
+}
+
+static void set_range(__be32 **cellp,
+ int address_cells, int size_cells,
+ uint64_t address, uint64_t size)
+{
+ set_cell(cellp, address_cells, address);
+ set_cell(cellp, size_cells, size);
+}
+
+static int fdt_property_compat(libxl__gc *gc, void *fdt, unsigned nr_compat,
...)
+{
+ const char *compats[nr_compat];
+ int i;
+ size_t sz;
+ va_list ap;
+ char *compat, *p;
+
+ va_start(ap, nr_compat);
+ sz = 0;
+ for (i = 0; i < nr_compat; i++) {
+ const char *c = va_arg(ap, const char *);
+ compats[i] = c;
+ sz += strlen(compats[i]) + 1;
+ }
+ va_end(ap);
+
+ p = compat = libxl__zalloc(gc, sz);
+ for (i = 0; i < nr_compat; i++) {
+ strcpy(p, compats[i]);
+ p += strlen(compats[i]) + 1;
+ }
+
+ fdt_property(fdt, "compatible", compat, sz);
+
+ return 0;
+}
+
+static int fdt_property_interrupts(libxl__gc *gc, void *fdt,
+ gic_interrupt_t *intr,
+ unsigned num_irq)
+{
+ int res;
+
+ res = fdt_property(fdt, "interrupts", intr, sizeof (intr[0]) *
num_irq);
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "interrupt-parent", PHANDLE_GIC);
+
+ return res;
+}
+
+static int fdt_property_regs(libxl__gc *gc, void *fdt,
+ unsigned addr_cells,
+ unsigned size_cells,
+ unsigned num_regs, ...)
+{
+ uint32_t regs[num_regs*(addr_cells+size_cells)];
+ __be32 *cells = ®s[0];
+ int i;
+ va_list ap;
+ uint64_t base, size;
+
+ va_start(ap, num_regs);
+ for (i = 0 ; i < num_regs; i++) {
+ base = addr_cells ? va_arg(ap, uint64_t) : 0;
+ size = size_cells ? va_arg(ap, uint64_t) : 0;
+ set_range(&cells, addr_cells, size_cells, base, size);
+ }
+ va_end(ap);
+
+ return fdt_property(fdt, "reg", regs, sizeof(regs));
+}
+
+static int make_root_properties(libxl__gc *gc,
+ const libxl_version_info *vers,
+ void *fdt)
+{
+ int res;
+
+ res = fdt_property_string(fdt, "model",
GCSPRINTF("XENVM-%d.%d",
+
vers->xen_version_major,
+
vers->xen_version_minor));
+ if ( res )
+ return res;
+
+ res = fdt_property_compat(gc, fdt, 2,
+ GCSPRINTF("xen,xenvm-%d.%d",
+ vers->xen_version_major,
+ vers->xen_version_minor),
+ "xen,xenvm");
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "interrupt-parent", PHANDLE_GIC);
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "#address-cells",
ROOT_ADDRESS_CELLS);
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "#size-cells", ROOT_SIZE_CELLS);
+ if ( res )
+ return res;
+
+ return 0;
+}
+
+static int make_chosen_node(libxl__gc *gc, void *fdt,
+ const libxl_domain_build_info *info)
+{
+ int res;
+
+ /* See linux Documentation/devicetree/... */
+ res = fdt_begin_node(fdt, "chosen");
+ if ( res )
+ return res;
+
+ res = fdt_property_string(fdt, "bootargs",
info->u.pv.cmdline);
+ if ( res )
+ return res;
+
+ res = fdt_end_node(fdt);
+
+ return res;
+}
+
+static int make_cpus_node(libxl__gc *gc, void *fdt, int nr_cpus,
+ const struct arch_info *ainfo)
+{
+ int res, i;
+
+ res = fdt_begin_node(fdt, "cpus");
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "#address-cells", 1);
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "#size-cells", 0);
+ if ( res )
+ return res;
+
+ for (i = 0; i < nr_cpus; i++) {
+ char name[strlen("cpu@") + 2 + 1];
+
+ if ( snprintf(name, sizeof(name)-1, "cpu@%d", i) < 0 )
+ {
+ perror("snprintf");
+ exit(1);
+ }
+
+ res = fdt_begin_node(fdt, name);
+ if ( res )
+ return res;
+
+ res = fdt_property_string(fdt, "device_type",
"cpu");
+ if ( res )
+ return res;
+
+ res = fdt_property_compat(gc, fdt, 1, ainfo->cpu_compat);
+ if ( res )
+ return res;
+
+ res = fdt_property_string(fdt, "enable-method",
"psci");
+ if ( res )
+ return res;
+
+ res = fdt_property_regs(gc, fdt, 1, 0, 1, (uint64_t)i);
+ if ( res )
+ return res;
+
+ res = fdt_end_node(fdt);
+ if ( res )
+ return res;
+
+ }
+
+ res = fdt_end_node(fdt);
+
+ return res;
+}
+
+static int make_psci_node(libxl__gc *gc, void *fdt)
+{
+ int res;
+
+ res = fdt_begin_node(fdt, "psci");
+ if ( res )
+ return res;
+
+ res = fdt_property_compat(gc, fdt, 1, "arm,psci");
+ if ( res )
+ return res;
+
+ res = fdt_property_string(fdt, "method", "hvc");
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "cpu_off", PSCI_cpu_off);
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "cpu_on", PSCI_cpu_on);
+ if ( res )
+ return res;
+
+ res = fdt_end_node(fdt);
+
+ return res;
+}
+
+static int make_memory_node(libxl__gc *gc, void *fdt,
+ unsigned long long base,
+ unsigned long long size)
+{
+ int res;
+ char name[strlen("memory@") + 8 + 1];
+
+ snprintf(name, sizeof(name), "memory@%08llx", base);
+
+ res = fdt_begin_node(fdt, name);
+ if ( res )
+ return res;
+
+ res = fdt_property_string(fdt, "device_type",
"memory");
+ if ( res )
+ return res;
+
+ res = fdt_property_regs(gc, fdt, ROOT_ADDRESS_CELLS, ROOT_SIZE_CELLS,
+ 1, (uint64_t)base, (uint64_t)size);
+ if ( res )
+ return res;
+
+ res = fdt_end_node(fdt);
+
+ return res;
+}
+
+static int make_intc_node(libxl__gc *gc, void *fdt,
+ unsigned long long gicd_base,
+ unsigned long long gicd_size,
+ unsigned long long gicc_base,
+ unsigned long long gicc_size)
+{
+ int res;
+ char name[strlen("interrupt-controller@") + 8 + 1];
+
+ snprintf(name, sizeof(name), "interrupt-controller@%08llx",
gicd_base);
+
+ res = fdt_begin_node(fdt, name);
+ if ( res )
+ return res;
+
+ res = fdt_property_compat(gc, fdt, 2,
+ "arm,cortex-a15-gic",
+ "arm,cortex-a9-gic");
+ if ( res )
+ return res;
+
+
+ res = fdt_property_cell(fdt, "#interrupt-cells", 3);
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "#address-cells", 0);
+ if ( res )
+ return res;
+
+ res = fdt_property(fdt, "interrupt-controller", NULL, 0);
+ if ( res )
+ return res;
+
+ res = fdt_property_regs(gc, fdt, ROOT_ADDRESS_CELLS, ROOT_SIZE_CELLS,
+ 2,
+ (uint64_t)gicd_base, (uint64_t)gicd_size,
+ (uint64_t)gicc_base, (uint64_t)gicc_size);
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "linux,phandle", PHANDLE_GIC);
+ if ( res )
+ return res;
+
+ res = fdt_property_cell(fdt, "phandle", PHANDLE_GIC);
+ if ( res )
+ return res;
+
+ res = fdt_end_node(fdt);
+
+ return res;
+}
+
+static int make_timer_node(libxl__gc *gc, void *fdt, const struct arch_info
*ainfo)
+{
+ int res;
+ gic_interrupt_t ints[3];
+
+ res = fdt_begin_node(fdt, "timer");
+ if ( res )
+ return res;
+
+ res = fdt_property_compat(gc, fdt, 1, ainfo->timer_compat);
+ if ( res )
+ return res;
+
+ set_interrupt_ppi(ints[0], GUEST_TIMER_PHYS_S_PPI, 0xf, 0x8);
+ set_interrupt_ppi(ints[1], GUEST_TIMER_PHYS_NS_PPI, 0xf, 0x8);
+ set_interrupt_ppi(ints[2], GUEST_TIMER_VIRT_PPI, 0xf, 0x8);
+
+ res = fdt_property_interrupts(gc, fdt, ints, 3);
+ if ( res )
+ return res;
+
+ res = fdt_end_node(fdt);
+
+ return res;
+}
+
+static int make_hypervisor_node(libxl__gc *gc, void *fdt,
+ const libxl_version_info *vers)
+{
+ int res;
+ gic_interrupt_t intr;
+
+ /* See linux Documentation/devicetree/bindings/arm/xen.txt */
+ res = fdt_begin_node(fdt, "hypervisor");
+ if ( res )
+ return res;
+
+ res = fdt_property_compat(gc, fdt, 2,
+ GCSPRINTF("xen,xen-%d.%d",
+ vers->xen_version_major,
+ vers->xen_version_minor),
+ "xen,xen");
+ if ( res )
+ return res;
+
+ /* reg 0 is grant table space */
+ res = fdt_property_regs(gc, fdt, ROOT_ADDRESS_CELLS, ROOT_SIZE_CELLS,
+ 1,GUEST_GNTTAB_BASE, GUEST_GNTTAB_SIZE);
+ if ( res )
+ return res;
+
+ /*
+ * interrupts is evtchn upcall:
+ * - Active-low level-sensitive
+ * - All cpus
+ */
+ set_interrupt_ppi(intr, GUEST_EVTCHN_PPI, 0xf, 0x8);
+
+ res = fdt_property_interrupts(gc, fdt, &intr, 1);
+ if ( res )
+ return res;
+
+ res = fdt_end_node(fdt);
+
+ return res;
+}
+
+static const struct arch_info *get_arch_info(libxl__gc *gc,
+ const struct xc_dom_image *dom)
+{
+ int i;
+
+ for (i=0; i < ARRAY_SIZE(arch_info); i++) {
+ const struct arch_info *info = &arch_info[i];
+ if (!strcmp(dom->guest_type, info->guest_type))
+ return info;
+ }
+ LOG(ERROR, "Unable to find arch FDT info for %s\n",
dom->guest_type);
+ return NULL;
+}
+
+#define FDT_MAX_SIZE (1<<20)
+
+/*
+ * Call "call" handling FDR_ERR_*. Will either:
+ * - loop back to retry_resize
+ * - set rc and goto out
+ * - fall through successfully
+ *
+ * On FDT_ERR_NOSPACE we start again from scratch rather than
+ * realloc+libfdt_open_into because "call" may have failed half way
+ * through a series of steps leaving the partial tree in an
+ * inconsistent state, e.g. leaving a node open.
+ */
+#define FDT( call ) do { \
+ int fdt_res = (call); \
+ if (fdt_res == -FDT_ERR_NOSPACE && fdt_size < FDT_MAX_SIZE) \
+ goto retry_resize; \
+ else if (fdt_res < 0) { \
+ LOG(ERROR, "FDT: %s failed: %d = %s", \
+ #call, fdt_res, fdt_strerror(fdt_res)); \
+ rc = ERROR_FAIL; \
+ goto out; \
+ } \
+} while(0)
+
+int libxl__arch_domain_configure(libxl__gc *gc,
+ libxl_domain_build_info *info,
+ struct xc_dom_image *dom)
+{
+ void *fdt;
+ int rc, res, fd;
+ size_t fdt_size = 0;
+
+ const libxl_version_info *vers;
+ const struct arch_info *ainfo;
+
+ assert(info->type == LIBXL_DOMAIN_TYPE_PV);
+
+ vers = libxl_get_version_info(CTX);
+ if (vers == NULL) return ERROR_FAIL;
+
+ ainfo = get_arch_info(gc, dom);
+ if (ainfo == NULL) return ERROR_FAIL;
+
+ LOG(INFO, "constructing DTB for Xen version %d.%d guest",
+ vers->xen_version_major, vers->xen_version_minor);
+
+ LOG(INFO, "ram base = %#"PRIx64,
+ (uint64_t)dom->rambase_pfn << XC_PAGE_SHIFT);
+ LOG(INFO, "cpus = %d", info->max_vcpus);
+
+retry_resize:
+ if (fdt_size) {
+ fdt_size <<= 1;
+ LOG(INFO, "Increasing FDT size to %zd and retrying",
fdt_size);
+ } else {
+ fdt_size = 4096;
+ }
+
+ fdt = libxl__zalloc(gc, fdt_size);
+
+ FDT( fdt_create(fdt, fdt_size) );
+
+ fdt_finish_reservemap(fdt);
+
+ FDT( fdt_begin_node(fdt, "") );
+
+ FDT( make_root_properties(gc, vers, fdt) );
+ FDT( make_chosen_node(gc, fdt, info) );
+ FDT( make_cpus_node(gc, fdt, info->max_vcpus, ainfo) );
+ FDT( make_psci_node(gc, fdt) );
+
+ FDT( make_memory_node(gc, fdt,
+ dom->rambase_pfn << XC_PAGE_SHIFT,
+ info->target_memkb * 1024) );
+ FDT( make_intc_node(gc, fdt,
+ GUEST_GICD_BASE, GUEST_GICD_SIZE,
+ GUEST_GICC_BASE, GUEST_GICD_SIZE) );
+
+ FDT( make_timer_node(gc, fdt, ainfo) );
+ FDT( make_hypervisor_node(gc, fdt, vers) );
+
+ FDT( fdt_end_node(fdt) );
+
+ FDT( fdt_finish(fdt) );
+
+ LOG(DEBUG, "fdt total size %d", fdt_totalsize(fdt));
+
+ if ( (res = xc_dom_devicetree_mem(dom, fdt, fdt_totalsize(fdt))) != 0 ) {
+ LOGE(ERROR, "xc_dom_devicetree_file failed");
+ rc = ERROR_FAIL;
+ goto out;
+ }
+
+#ifndef NDEBUG
+ if ( getenv("LIBXL_DEBUG_DUMP_DTB") ) {
+ const char *dtb = getenv("LIBXL_DEBUG_DUMP_DTB");
+
+ fd = open(dtb, O_CREAT|O_TRUNC|O_WRONLY, 0666);
+ if ( fd < 0 ) {
+ LOGE(DEBUG, "cannot open %s for LIBXL_DEBUG_DUMP_DTB",
dtb);
+ goto no_debug_dump;
+ }
+
+ rc = libxl_write_exactly(CTX, fd, fdt, fdt_totalsize(fdt),
+ dtb, "dtb");
+ if ( rc < 0 ) {
+ LOG(DEBUG, "unable to write DTB debug dump output %d",
rc);
+ goto no_debug_dump;
+ }
+
+ res = close(fd);
+ if ( res < 0 ) {
+ LOGE(DEBUG, "unable to close DTB debug dump output");
+ goto no_debug_dump;
+ }
+ }
+no_debug_dump:
+#endif
+
+ rc = 0;
+
+out:
+ return rc;
+}
diff --git a/tools/libxl/libxl_dom.c b/tools/libxl/libxl_dom.c
index ff78d20..87e13dc 100644
--- a/tools/libxl/libxl_dom.c
+++ b/tools/libxl/libxl_dom.c
@@ -397,6 +397,10 @@ int libxl__build_pv(libxl__gc *gc, uint32_t domid,
LOGE(ERROR, "xc_dom_parse_image failed");
goto out;
}
+ if ( (ret = libxl__arch_domain_configure(gc, info, dom)) != 0 ) {
+ LOGE(ERROR, "libxl__arch_domain_configure failed");
+ goto out;
+ }
if ( (ret = xc_dom_mem_init(dom, info->target_memkb / 1024)) != 0 ) {
LOGE(ERROR, "xc_dom_mem_init failed");
goto out;
diff --git a/tools/libxl/libxl_noarch.c b/tools/libxl/libxl_noarch.c
deleted file mode 100644
index 7893535..0000000
--- a/tools/libxl/libxl_noarch.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include "libxl_internal.h"
-#include "libxl_arch.h"
-
-int libxl__arch_domain_create(libxl__gc *gc, libxl_domain_config *d_config,
- uint32_t domid)
-{
- return 0;
-}
diff --git a/tools/libxl/libxl_x86.c b/tools/libxl/libxl_x86.c
index a78c91d..dd13c45 100644
--- a/tools/libxl/libxl_x86.c
+++ b/tools/libxl/libxl_x86.c
@@ -308,3 +308,10 @@ int libxl__arch_domain_create(libxl__gc *gc,
libxl_domain_config *d_config,
return ret;
}
+
+int libxl__arch_domain_configure(libxl__gc *gc,
+ libxl_domain_build_info *info,
+ struct xc_dom_image *dom)
+{
+ return 0;
+}
--
1.8.4.rc3
Matthew Daley
2013-Nov-01 23:47 UTC
Re: [PATCH 12/14] libxc: support for arm64 Image format
On Sat, Nov 2, 2013 at 12:20 AM, Ian Campbell <ian.campbell@citrix.com> wrote:> Signed-off-by: Ian Campbell <ian.campbell@citrix.com> > --- > tools/libxc/xc_dom_armzimageloader.c | 88 ++++++++++++++++++++++++++++++++++++ > 1 file changed, 88 insertions(+) > > diff --git a/tools/libxc/xc_dom_armzimageloader.c b/tools/libxc/xc_dom_armzimageloader.c > index 4e3f7ae..609d3a0 100644 > --- a/tools/libxc/xc_dom_armzimageloader.c > +++ b/tools/libxc/xc_dom_armzimageloader.c > @@ -129,6 +129,86 @@ static int xc_dom_parse_zimage32_kernel(struct xc_dom_image *dom) > } > > /* ------------------------------------------------------------ */ > +/* 64-bit zImage Support */ > +/* ------------------------------------------------------------ */ > + > +#define ZIMAGE64_MAGIC_V0 0x14000008 > +#define ZIMAGE64_MAGIC_V1 0x644d5241 /* "ARM\x64" */ > + > +/* linux/Documentation/arm64/booting.txt */ > +struct zimage64_hdr { > + uint32_t magic0; > + uint32_t res0; > + uint64_t text_offset; /* Image load offset */ > + uint64_t res1; > + uint64_t res2; > + /* zImage V1 only from here */ > + uint64_t res3; > + uint64_t res4; > + uint64_t res5; > + uint32_t magic1; > + uint32_t res6; > +}; > +static int xc_dom_probe_zimage64_kernel(struct xc_dom_image *dom) > +{ > + struct zimage64_hdr *zimage; > + > + if ( dom->kernel_blob == NULL ) > + { > + xc_dom_panic(dom->xch, XC_INTERNAL_ERROR, > + "%s: no kernel image loaded", __FUNCTION__); > + return -EINVAL; > + } > + > + if ( dom->kernel_size < sizeof(*zimage) ) > + { > + xc_dom_printf(dom->xch, "%s: kernel image too small", __FUNCTION__); > + return -EINVAL; > + } > + > + zimage = dom->kernel_blob; > + if ( zimage->magic0 != ZIMAGE64_MAGIC_V0 && > + zimage->magic1 != ZIMAGE64_MAGIC_V1 )Is this && meant to be ||?> + { > + xc_dom_printf(dom->xch, "%s: kernel is not an arm64 Image", __FUNCTION__); > + return -EINVAL; > + } > + > + return 0; > +} > + > +static int xc_dom_parse_zimage64_kernel(struct xc_dom_image *dom) > +{ > + struct zimage64_hdr *zimage; > + uint32_t entry_addr; > + uint64_t v_start, v_end; > + uint64_t rambase = dom->rambase_pfn << XC_PAGE_SHIFT; > + > + DOMPRINTF_CALLED(dom->xch); > + > + zimage = dom->kernel_blob; > + > + v_start = rambase + zimage->text_offset; > + v_end = v_start + dom->kernel_size; > + > + entry_addr = v_start; > + > + /* find kernel segment */ > + dom->kernel_seg.vstart = v_start; > + dom->kernel_seg.vend = v_start + dom->kernel_size;Just some nitpicking: why not just use v_end here? It''s not used otherwise.> + > + dom->parms.virt_entry = entry_addr;Similarly, why not just use v_start directly, and remove otherwise unused entry_addr? - Matthew> + dom->parms.virt_base = rambase; > + > + dom->guest_type = "xen-3.0-aarch64"; > + DOMPRINTF("%s: %s: 0x%" PRIx64 " -> 0x%" PRIx64 "", > + __FUNCTION__, dom->guest_type, > + dom->kernel_seg.vstart, dom->kernel_seg.vend); > + > + return 0; > +} > + > +/* ------------------------------------------------------------ */ > /* Common zImage Support */ > /* ------------------------------------------------------------ */ > > @@ -163,9 +243,17 @@ static struct xc_dom_loader zimage32_loader = { > .loader = xc_dom_load_zimage_kernel, > }; > > +static struct xc_dom_loader zimage64_loader = { > + .name = "Linux zImage (ARM64)", > + .probe = xc_dom_probe_zimage64_kernel, > + .parser = xc_dom_parse_zimage64_kernel, > + .loader = xc_dom_load_zimage_kernel, > +}; > + > static void __init register_loader(void) > { > xc_dom_register_loader(&zimage32_loader); > + xc_dom_register_loader(&zimage64_loader); > } > > /* > -- > 1.8.4.rc3 > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel
Ian Campbell
2013-Nov-05 11:00 UTC
Re: [PATCH 12/14] libxc: support for arm64 Image format
On Sat, 2013-11-02 at 12:47 +1300, Matthew Daley wrote:> On Sat, Nov 2, 2013 at 12:20 AM, Ian Campbell <ian.campbell@citrix.com> wrote:> > + zimage = dom->kernel_blob; > > + if ( zimage->magic0 != ZIMAGE64_MAGIC_V0 && > > + zimage->magic1 != ZIMAGE64_MAGIC_V1 ) > > Is this && meant to be ||?There are two distinct versions of the zImage header on ARM64, each with a different magic at a different location.> > + { > > + xc_dom_printf(dom->xch, "%s: kernel is not an arm64 Image", __FUNCTION__); > > + return -EINVAL; > > + } > > + > > + return 0; > > +} > > + > > +static int xc_dom_parse_zimage64_kernel(struct xc_dom_image *dom) > > +{ > > + struct zimage64_hdr *zimage; > > + uint32_t entry_addr; > > + uint64_t v_start, v_end; > > + uint64_t rambase = dom->rambase_pfn << XC_PAGE_SHIFT; > > + > > + DOMPRINTF_CALLED(dom->xch); > > + > > + zimage = dom->kernel_blob; > > + > > + v_start = rambase + zimage->text_offset; > > + v_end = v_start + dom->kernel_size; > > + > > + entry_addr = v_start; > > + > > + /* find kernel segment */ > > + dom->kernel_seg.vstart = v_start; > > + dom->kernel_seg.vend = v_start + dom->kernel_size; > > Just some nitpicking: why not just use v_end here? It''s not used otherwise. > > > + > > + dom->parms.virt_entry = entry_addr; > > Similarly, why not just use v_start directly, and remove otherwise > unused entry_addr?Probably just hang overs from copying the 32-bit version, which has slightly different requirements. I should simplify. Ian.
Ian Campbell
2013-Nov-12 10:09 UTC
Re: [PATCH 12/14] libxc: support for arm64 Image format
On Tue, 2013-11-05 at 11:00 +0000, Ian Campbell wrote:> > > + > > > + dom->parms.virt_entry = entry_addr; > > > > Similarly, why not just use v_start directly, and remove otherwise > > unused entry_addr?This was actually a bug, since entry_addr was only 32-bits. Not sure if any kernel has an entry address above 4GB in practice, but I think it is valid. Ian.
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