diff --git a/hw/ppc/Makefile.objs b/hw/ppc/Makefile.objs
index 951e407..8fe2123 100644
--- a/hw/ppc/Makefile.objs
+++ b/hw/ppc/Makefile.objs
@@ -11,6 +11,7 @@ obj-y += ppc_newworld.o
 obj-$(CONFIG_PSERIES) += spapr.o spapr_hcall.o spapr_rtas.o spapr_vio.o
 obj-$(CONFIG_PSERIES) += xics.o spapr_vty.o spapr_llan.o spapr_vscsi.o
 obj-$(CONFIG_PSERIES) += spapr_pci.o pci-hotplug.o spapr_iommu.o
+obj-$(CONFIG_PSERIES) += spapr_events.o
 # PowerPC 4xx boards
 obj-y += ppc4xx_devs.o ppc4xx_pci.o ppc405_uc.o ppc405_boards.o
 obj-y += ppc440_bamboo.o
diff --git a/hw/spapr.c b/hw/spapr.c
index 09b8e99..64c35a8 100644
--- a/hw/spapr.c
+++ b/hw/spapr.c
@@ -232,7 +232,8 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
                                    target_phys_addr_t initrd_size,
                                    target_phys_addr_t kernel_size,
                                    const char *boot_device,
-                                   const char *kernel_cmdline)
+                                   const char *kernel_cmdline,
+                                   uint32_t epow_irq)
 {
     void *fdt;
     CPUPPCState *env;
@@ -403,6 +404,8 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
     _FDT((fdt_property(fdt, "ibm,associativity-reference-points",
         refpoints, sizeof(refpoints))));
 
+    _FDT((fdt_property_cell(fdt, "rtas-error-log-max", RTAS_ERROR_LOG_MAX)));
+
     _FDT((fdt_end_node(fdt)));
 
     /* interrupt controller */
@@ -433,6 +436,9 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
 
     _FDT((fdt_end_node(fdt)));
 
+    /* event-sources */
+    spapr_events_fdt_skel(fdt, epow_irq);
+
     _FDT((fdt_end_node(fdt))); /* close root node */
     _FDT((fdt_finish(fdt)));
 
@@ -794,6 +800,9 @@ static void ppc_spapr_init(ram_addr_t ram_size,
     spapr->icp = xics_system_init(XICS_IRQS);
     spapr->next_irq = 16;
 
+    /* Set up EPOW events infrastructure */
+    spapr_events_init(spapr);
+
     /* Set up IOMMU */
     spapr_iommu_init();
 
@@ -902,7 +911,8 @@ static void ppc_spapr_init(ram_addr_t ram_size,
     spapr->fdt_skel = spapr_create_fdt_skel(cpu_model,
                                             initrd_base, initrd_size,
                                             kernel_size,
-                                            boot_device, kernel_cmdline);
+                                            boot_device, kernel_cmdline,
+                                            spapr->epow_irq);
     assert(spapr->fdt_skel != NULL);
 }
 
diff --git a/hw/spapr.h b/hw/spapr.h
index e984e3f..3d02911 100644
--- a/hw/spapr.h
+++ b/hw/spapr.h
@@ -26,6 +26,12 @@ typedef struct sPAPREnvironment {
     int rtc_offset;
     char *cpu_model;
     bool has_graphics;
+
+    /* Data for Environmental and POwer Warnings (EPOW events) */
+    uint32_t epow_irq;
+    Notifier epow_notifier;
+    void *pending_epow;
+    uint32_t next_plid;
 } sPAPREnvironment;
 
 #define H_SUCCESS         0
@@ -335,7 +341,12 @@ typedef struct sPAPRTCE {
 #define SPAPR_VIO_BASE_LIOBN    0x00000000
 #define SPAPR_PCI_BASE_LIOBN    0x80000000
 
+#define RTAS_ERROR_LOG_MAX      2048
+
+
 void spapr_iommu_init(void);
+void spapr_events_init(sPAPREnvironment *spapr);
+void spapr_events_fdt_skel(void *fdt, uint32_t epow_irq);
 DMAContext *spapr_tce_new_dma_context(uint32_t liobn, size_t window_size);
 void spapr_tce_free(DMAContext *dma);
 void spapr_tce_reset(DMAContext *dma);
diff --git a/hw/spapr_events.c b/hw/spapr_events.c
new file mode 100644
index 0000000..4b19612
--- /dev/null
+++ b/hw/spapr_events.c
@@ -0,0 +1,320 @@
+/*
+ * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
+ *
+ * RTAS events handling
+ *
+ * Copyright (c) 2012 David Gibson, IBM Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+#include "cpu.h"
+#include "sysemu.h"
+#include "qemu-char.h"
+#include "hw/qdev.h"
+#include "device_tree.h"
+
+#include "hw/spapr.h"
+#include "hw/spapr_vio.h"
+
+#include <libfdt.h>
+
+typedef struct sPAPRRTASErrorLog {
+    uint32_t summary;
+#define RTAS_LOG_VERSION_MASK                   0xff000000
+#define   RTAS_LOG_VERSION_6                    0x06000000
+#define RTAS_LOG_SEVERITY_MASK                  0x00e00000
+#define   RTAS_LOG_SEVERITY_ALREADY_REPORTED    0x00c00000
+#define   RTAS_LOG_SEVERITY_FATAL               0x00a00000
+#define   RTAS_LOG_SEVERITY_ERROR               0x00800000
+#define   RTAS_LOG_SEVERITY_ERROR_SYNC          0x00600000
+#define   RTAS_LOG_SEVERITY_WARNING             0x00400000
+#define   RTAS_LOG_SEVERITY_EVENT               0x00200000
+#define   RTAS_LOG_SEVERITY_NO_ERROR            0x00000000
+#define RTAS_LOG_DISPOSITION_MASK               0x00180000
+#define   RTAS_LOG_DISPOSITION_FULLY_RECOVERED  0x00000000
+#define   RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000
+#define   RTAS_LOG_DISPOSITION_NOT_RECOVERED    0x00100000
+#define RTAS_LOG_OPTIONAL_PART_PRESENT          0x00040000
+#define RTAS_LOG_INITIATOR_MASK                 0x0000f000
+#define   RTAS_LOG_INITIATOR_UNKNOWN            0x00000000
+#define   RTAS_LOG_INITIATOR_CPU                0x00001000
+#define   RTAS_LOG_INITIATOR_PCI                0x00002000
+#define   RTAS_LOG_INITIATOR_MEMORY             0x00004000
+#define   RTAS_LOG_INITIATOR_HOTPLUG            0x00006000
+#define RTAS_LOG_TARGET_MASK                    0x00000f00
+#define   RTAS_LOG_TARGET_UNKNOWN               0x00000000
+#define   RTAS_LOG_TARGET_CPU                   0x00000100
+#define   RTAS_LOG_TARGET_PCI                   0x00000200
+#define   RTAS_LOG_TARGET_MEMORY                0x00000400
+#define   RTAS_LOG_TARGET_HOTPLUG               0x00000600
+#define RTAS_LOG_TYPE_MASK                      0x000000ff
+#define   RTAS_LOG_TYPE_OTHER                   0x00000000
+#define   RTAS_LOG_TYPE_RETRY                   0x00000001
+#define   RTAS_LOG_TYPE_TCE_ERR                 0x00000002
+#define   RTAS_LOG_TYPE_INTERN_DEV_FAIL         0x00000003
+#define   RTAS_LOG_TYPE_TIMEOUT                 0x00000004
+#define   RTAS_LOG_TYPE_DATA_PARITY             0x00000005
+#define   RTAS_LOG_TYPE_ADDR_PARITY             0x00000006
+#define   RTAS_LOG_TYPE_CACHE_PARITY            0x00000007
+#define   RTAS_LOG_TYPE_ADDR_INVALID            0x00000008
+#define   RTAS_LOG_TYPE_ECC_UNCORR              0x00000009
+#define   RTAS_LOG_TYPE_ECC_CORR                0x0000000a
+#define   RTAS_LOG_TYPE_EPOW                    0x00000040
+    uint32_t extended_length;
+} QEMU_PACKED sPAPRRTASErrorLog;
+
+typedef struct sPAPRRTASErrorLogV6 {
+    uint8_t b0;
+#define RTAS_LOG_V6_B0_VALID                          0x80
+#define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR            0x40
+#define RTAS_LOG_V6_B0_RECOVERABLE_ERROR              0x20
+#define RTAS_LOG_V6_B0_DEGRADED_OPERATION             0x10
+#define RTAS_LOG_V6_B0_PREDICTIVE_ERROR               0x08
+#define RTAS_LOG_V6_B0_NEW_LOG                        0x04
+#define RTAS_LOG_V6_B0_BIGENDIAN                      0x02
+    uint8_t reserved1;
+    uint8_t b2;
+#define RTAS_LOG_V6_B2_POWERPC_FORMAT                 0x80
+#define RTAS_LOG_V6_B2_LOG_FORMAT_MASK                0x0f
+#define   RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT    0x0e
+    uint8_t reserved2[9];
+    uint32_t company;
+#define RTAS_LOG_V6_COMPANY_IBM                 0x49424d00 /* IBM<null> */
+} QEMU_PACKED sPAPRRTASErrorLogV6;
+
+typedef struct sPAPRRTASErrorLogV6SectionHeader {
+    uint16_t section_id;
+    uint16_t section_length;
+    uint8_t section_version;
+    uint8_t section_subtype;
+    uint16_t creator_component_id;
+} QEMU_PACKED sPAPRRTASErrorLogV6SectionHeader;
+
+typedef struct sPAPRRTASErrorLogV6MainA {
+#define RTAS_LOG_V6_SECTION_ID_MAINA                0x5048 /* PH */
+    sPAPRRTASErrorLogV6SectionHeader hdr;
+    uint32_t creation_date; /* BCD: YYYYMMDD */
+    uint32_t creation_time; /* BCD: HHMMSS00 */
+    uint8_t _platform1[8];
+    char creator_id;
+    uint8_t reserved1[2];
+    uint8_t section_count;
+    uint8_t reserved2[4];
+    uint8_t _platform2[8];
+    uint32_t plid;
+    uint8_t _platform3[4];
+} QEMU_PACKED sPAPRRTASErrorLogV6MainA;
+
+typedef struct sPAPRRTASErrorLogV6MainB {
+#define RTAS_LOG_V6_SECTION_ID_MAINB                0x5548 /* UH */
+    sPAPRRTASErrorLogV6SectionHeader hdr;
+    uint8_t subsystem_id;
+    uint8_t _platform1;
+    uint8_t event_severity;
+    uint8_t event_subtype;
+    uint8_t _platform2[4];
+    uint8_t reserved1[2];
+    uint16_t action_flags;
+    uint8_t reserved2[4];
+} QEMU_PACKED sPAPRRTASErrorLogV6MainB;
+
+typedef struct sPAPRRTASErrorLogV6V6EPOW {
+#define RTAS_LOG_V6_SECTION_ID_EPOW                 0x4550 /* EP */
+    sPAPRRTASErrorLogV6SectionHeader hdr;
+    uint8_t sensor_value;
+#define RTAS_LOG_V6_EPOW_ACTION_RESET                    0
+#define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING             1
+#define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER               2
+#define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN          3
+#define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT              4
+#define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE           5
+#define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF                7
+    uint8_t event_modifier;
+#define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL                 1
+#define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS                 2
+#define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL               3
+#define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE            4
+    uint8_t extended_modifier;
+#define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE           0
+#define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC    1
+    uint8_t reserved;
+    uint64_t reason_code;
+} QEMU_PACKED sPAPRRTASErrorLogV6EPOW;
+
+typedef struct sPAPREPOWLogFull {
+    sPAPRRTASErrorLog hdr;
+    sPAPRRTASErrorLogV6 v6hdr;
+    sPAPRRTASErrorLogV6MainA maina;
+    sPAPRRTASErrorLogV6MainB mainb;
+    sPAPRRTASErrorLogV6EPOW epow;
+} QEMU_PACKED sPAPREPOWLogFull;
+
+#define EVENT_MASK_INTERNAL_ERRORS           0x80000000
+#define EVENT_MASK_EPOW                      0x40000000
+#define EVENT_MASK_HOTPLUG                   0x10000000
+#define EVENT_MASK_IO                        0x08000000
+
+#define _FDT(exp) \
+    do { \
+        int ret = (exp);                                           \
+        if (ret < 0) {                                             \
+            fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \
+                    #exp, fdt_strerror(ret));                      \
+            exit(1);                                               \
+        }                                                          \
+    } while (0)
+
+void spapr_events_fdt_skel(void *fdt, uint32_t epow_irq)
+{
+    uint32_t epow_irq_ranges[] = {cpu_to_be32(epow_irq), cpu_to_be32(1)};
+    uint32_t epow_interrupts[] = {cpu_to_be32(epow_irq), 0};
+
+    _FDT((fdt_begin_node(fdt, "event-sources")));
+
+    _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0)));
+    _FDT((fdt_property_cell(fdt, "#interrupt-cells", 2)));
+    _FDT((fdt_property(fdt, "interrupt-ranges",
+                       epow_irq_ranges, sizeof(epow_irq_ranges))));
+
+    _FDT((fdt_begin_node(fdt, "epow-events")));
+    _FDT((fdt_property(fdt, "interrupts",
+                       epow_interrupts, sizeof(epow_interrupts))));
+    _FDT((fdt_end_node(fdt)));
+
+    _FDT((fdt_end_node(fdt)));
+}
+
+static void spapr_powerdown_req(Notifier *n, void *opaque)
+{
+    sPAPREnvironment *spapr = container_of(n, sPAPREnvironment, epow_notifier);
+    sPAPREPOWLogFull *pending_epow = (sPAPREPOWLogFull *)spapr->pending_epow;
+    sPAPRRTASErrorLog *hdr;
+    sPAPRRTASErrorLogV6 *v6hdr;
+    sPAPRRTASErrorLogV6MainA *maina;
+    sPAPRRTASErrorLogV6MainB *mainb;
+    sPAPRRTASErrorLogV6EPOW *epow;
+    struct tm tm;
+    int year;
+
+    if (pending_epow) {
+        /* For now, we just throw away earlier events if two come
+         * along before any are consumed.  This is sufficient for our
+         * powerdown messages, but we'll need more if we do more
+         * general error/event logging */
+        g_free(pending_epow);
+    }
+    pending_epow = g_malloc0(sizeof(*pending_epow));
+    hdr = &pending_epow->hdr;
+    v6hdr = &pending_epow->v6hdr;
+    maina = &pending_epow->maina;
+    mainb = &pending_epow->mainb;
+    epow = &pending_epow->epow;
+
+    hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6
+                               | RTAS_LOG_SEVERITY_EVENT
+                               | RTAS_LOG_DISPOSITION_NOT_RECOVERED
+                               | RTAS_LOG_OPTIONAL_PART_PRESENT
+                               | RTAS_LOG_TYPE_EPOW);
+    hdr->extended_length = cpu_to_be32(sizeof(*pending_epow)
+                                       - sizeof(pending_epow->hdr));
+
+    v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG
+        | RTAS_LOG_V6_B0_BIGENDIAN;
+    v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT
+        | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT;
+    v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM);
+
+    maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA);
+    maina->hdr.section_length = cpu_to_be16(sizeof(*maina));
+    /* FIXME: section version, subtype and creator id? */
+    qemu_get_timedate(&tm, spapr->rtc_offset);
+    year = tm.tm_year + 1900;
+    maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24)
+                                       | (to_bcd(year % 100) << 16)
+                                       | (to_bcd(tm.tm_mon + 1) << 8)
+                                       | to_bcd(tm.tm_mday));
+    maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24)
+                                       | (to_bcd(tm.tm_min) << 16)
+                                       | (to_bcd(tm.tm_sec) << 8));
+    maina->creator_id = 'H'; /* Hypervisor */
+    maina->section_count = 3; /* Main-A, Main-B and EPOW */
+    maina->plid = spapr->next_plid++;
+
+    mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB);
+    mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb));
+    /* FIXME: section version, subtype and creator id? */
+    mainb->subsystem_id = 0xa0; /* External environment */
+    mainb->event_severity = 0x00; /* Informational / non-error */
+    mainb->event_subtype = 0xd0; /* Normal shutdown */
+
+    epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW);
+    epow->hdr.section_length = cpu_to_be16(sizeof(*epow));
+    epow->hdr.section_version = 2; /* includes extended modifier */
+    /* FIXME: section subtype and creator id? */
+    epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN;
+    epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL;
+    epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC;
+
+    qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->epow_irq));
+}
+
+static void check_exception(sPAPREnvironment *spapr,
+                            uint32_t token, uint32_t nargs,
+                            target_ulong args,
+                            uint32_t nret, target_ulong rets)
+{
+    sPAPREPOWLogFull *pending_epow = (sPAPREPOWLogFull *)spapr->pending_epow;
+    uint32_t mask, buf, len;
+    uint64_t xinfo;
+
+    if ((nargs < 6) || (nargs > 7) || nret != 1) {
+        rtas_st(rets, 0, -3);
+        return;
+    }
+
+    xinfo = rtas_ld(args, 1);
+    mask = rtas_ld(args, 2);
+    buf = rtas_ld(args, 4);
+    len = rtas_ld(args, 5);
+    if (nargs == 7) {
+        xinfo |= (uint64_t)rtas_ld(args, 6) << 32;
+    }
+
+    if ((mask & EVENT_MASK_EPOW) && pending_epow) {
+        if (sizeof(*pending_epow) < len) {
+            len = sizeof(*pending_epow);
+        }
+
+        cpu_physical_memory_write(buf, pending_epow, len);
+        g_free(pending_epow);
+        pending_epow = NULL;
+        rtas_st(rets, 0, 0);
+    } else {
+        rtas_st(rets, 0, 1);
+    }
+}
+
+void spapr_events_init(sPAPREnvironment *spapr)
+{
+    spapr->epow_irq = spapr_allocate_msi(0);
+    spapr->epow_notifier.notify = spapr_powerdown_req;
+    qemu_register_powerdown_notifier(&spapr->epow_notifier);
+    spapr_rtas_register("check-exception", check_exception);
+}
