This patch adds memory nodes corresponding to PC-DIMM regions.
This is an opt-in feature and needs to be enabled("fdt=on") when
Guest is booted with DT.
NVDIMM and ACPI_NVDIMM configs are not yet set for ARM so we
don't need to care about NVDIMM at this stage.
Signed-off-by: Shameer Kolothum <shameerali.kolothum.th...@huawei.com>
Signed-off-by: Eric Auger <eric.au...@redhat.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.th...@huawei.com>
---
hw/arm/boot.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/hw/arm/boot.c b/hw/arm/boot.c
index a830655..5b9a994 100644
--- a/hw/arm/boot.c
+++ b/hw/arm/boot.c
@@ -19,6 +19,7 @@
#include "sysemu/numa.h"
#include "hw/boards.h"
#include "hw/loader.h"
+#include "hw/mem/memory-device.h"
#include "elf.h"
#include "sysemu/device_tree.h"
#include "qemu/config-file.h"
@@ -522,6 +523,41 @@ static void fdt_add_psci_node(void *fdt)
qemu_fdt_setprop_cell(fdt, "/psci", "migrate", migrate_fn);
}
+static int fdt_add_hotpluggable_memory_nodes(void *fdt,
+ uint32_t acells, uint32_t scells)
{
+ MemoryDeviceInfoList *info, *info_list = qmp_memory_device_list();
+ MemoryDeviceInfo *mi;
+ int ret = 0;
+
+ for (info = info_list; info != NULL; info = info->next) {
+ mi = info->value;
+ switch (mi->type) {
+ case MEMORY_DEVICE_INFO_KIND_DIMM:
+ {
+ PCDIMMDeviceInfo *di = mi->u.dimm.data;
+
+ ret = fdt_add_memory_node(fdt, acells, di->addr,
+ scells, di->size, di->node);
+ if (ret) {
+ fprintf(stderr,
+ "couldn't add PCDIMM /memory@%"PRIx64" node\n",
+ di->addr);
+ goto out;
+ }
+ break;
+ }
+ default:
+ fprintf(stderr, "%s memory nodes are not yet supported\n",
+ MemoryDeviceInfoKind_str(mi->type));
+ ret = -ENOENT;
+ goto out;
+ }
+ }
+out:
+ qapi_free_MemoryDeviceInfoList(info_list);
+ return ret;
+}
+
int arm_load_dtb(hwaddr addr, const struct arm_boot_info *binfo,
hwaddr addr_limit, AddressSpace *as)
{
@@ -621,6 +657,14 @@ int arm_load_dtb(hwaddr addr, const struct arm_boot_info
*binfo,
}
}
+ if (object_property_get_bool(OBJECT(qdev_get_machine()), "fdt", NULL)) {
+ rc = fdt_add_hotpluggable_memory_nodes(fdt, acells, scells);
+ if (rc < 0) {
+ fprintf(stderr, "couldn't add hotpluggable memory nodes\n");
+ goto fail;
+ }
+ }
+
rc = fdt_path_offset(fdt, "/chosen");
if (rc < 0) {
qemu_fdt_add_subnode(fdt, "/chosen");
--
2.7.4
