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-rw-r--r--hw/arm/aspeed_ast10x0.c13
-rw-r--r--hw/arm/aspeed_ast2600.c13
-rw-r--r--hw/arm/aspeed_soc.c14
-rw-r--r--hw/misc/aspeed_peci.c152
-rw-r--r--hw/misc/meson.build3
-rw-r--r--hw/misc/trace-events5
-rw-r--r--include/hw/arm/aspeed_soc.h3
-rw-r--r--include/hw/misc/aspeed_peci.h29
8 files changed, 231 insertions, 1 deletions
diff --git a/hw/arm/aspeed_ast10x0.c b/hw/arm/aspeed_ast10x0.c
index d34c06db16..33ef331771 100644
--- a/hw/arm/aspeed_ast10x0.c
+++ b/hw/arm/aspeed_ast10x0.c
@@ -47,6 +47,7 @@ static const hwaddr aspeed_soc_ast1030_memmap[] = {
     [ASPEED_DEV_UART13]    = 0x7E790700,
     [ASPEED_DEV_WDT]       = 0x7E785000,
     [ASPEED_DEV_LPC]       = 0x7E789000,
+    [ASPEED_DEV_PECI]      = 0x7E78B000,
     [ASPEED_DEV_I2C]       = 0x7E7B0000,
 };
 
@@ -75,6 +76,7 @@ static const int aspeed_soc_ast1030_irqmap[] = {
     [ASPEED_DEV_TIMER8]    = 23,
     [ASPEED_DEV_WDT]       = 24,
     [ASPEED_DEV_LPC]       = 35,
+    [ASPEED_DEV_PECI]      = 38,
     [ASPEED_DEV_FMC]       = 39,
     [ASPEED_DEV_PWM]       = 44,
     [ASPEED_DEV_ADC]       = 46,
@@ -133,6 +135,8 @@ static void aspeed_soc_ast1030_init(Object *obj)
 
     object_initialize_child(obj, "lpc", &s->lpc, TYPE_ASPEED_LPC);
 
+    object_initialize_child(obj, "peci", &s->peci, TYPE_ASPEED_PECI);
+
     object_initialize_child(obj, "sbc", &s->sbc, TYPE_ASPEED_SBC);
 
     for (i = 0; i < sc->wdts_num; i++) {
@@ -209,6 +213,15 @@ static void aspeed_soc_ast1030_realize(DeviceState *dev_soc, Error **errp)
         sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c.busses[i]), 0, irq);
     }
 
+    /* PECI */
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->peci), errp)) {
+        return;
+    }
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->peci), 0,
+                    sc->memmap[ASPEED_DEV_PECI]);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->peci), 0,
+                       aspeed_soc_get_irq(s, ASPEED_DEV_PECI));
+
     /* LPC */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->lpc), errp)) {
         return;
diff --git a/hw/arm/aspeed_ast2600.c b/hw/arm/aspeed_ast2600.c
index 29d2e2ece2..3f0611ac11 100644
--- a/hw/arm/aspeed_ast2600.c
+++ b/hw/arm/aspeed_ast2600.c
@@ -59,6 +59,7 @@ static const hwaddr aspeed_soc_ast2600_memmap[] = {
     [ASPEED_DEV_LPC]       = 0x1E789000,
     [ASPEED_DEV_IBT]       = 0x1E789140,
     [ASPEED_DEV_I2C]       = 0x1E78A000,
+    [ASPEED_DEV_PECI]      = 0x1E78B000,
     [ASPEED_DEV_UART1]     = 0x1E783000,
     [ASPEED_DEV_UART2]     = 0x1E78D000,
     [ASPEED_DEV_UART3]     = 0x1E78E000,
@@ -122,6 +123,7 @@ static const int aspeed_soc_ast2600_irqmap[] = {
     [ASPEED_DEV_LPC]       = 35,
     [ASPEED_DEV_IBT]       = 143,
     [ASPEED_DEV_I2C]       = 110,   /* 110 -> 125 */
+    [ASPEED_DEV_PECI]      = 38,
     [ASPEED_DEV_ETH1]      = 2,
     [ASPEED_DEV_ETH2]      = 3,
     [ASPEED_DEV_HACE]      = 4,
@@ -180,6 +182,8 @@ static void aspeed_soc_ast2600_init(Object *obj)
     snprintf(typename, sizeof(typename), "aspeed.i2c-%s", socname);
     object_initialize_child(obj, "i2c", &s->i2c, typename);
 
+    object_initialize_child(obj, "peci", &s->peci, TYPE_ASPEED_PECI);
+
     snprintf(typename, sizeof(typename), "aspeed.fmc-%s", socname);
     object_initialize_child(obj, "fmc", &s->fmc, typename);
 
@@ -397,6 +401,15 @@ static void aspeed_soc_ast2600_realize(DeviceState *dev, Error **errp)
         sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c.busses[i]), 0, irq);
     }
 
+    /* PECI */
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->peci), errp)) {
+        return;
+    }
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->peci), 0,
+                    sc->memmap[ASPEED_DEV_PECI]);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->peci), 0,
+                       aspeed_soc_get_irq(s, ASPEED_DEV_PECI));
+
     /* FMC, The number of CS is set at the board level */
     object_property_set_link(OBJECT(&s->fmc), "dram", OBJECT(s->dram_mr),
                              &error_abort);
diff --git a/hw/arm/aspeed_soc.c b/hw/arm/aspeed_soc.c
index 369c59a010..0f675e7fcd 100644
--- a/hw/arm/aspeed_soc.c
+++ b/hw/arm/aspeed_soc.c
@@ -46,6 +46,7 @@ static const hwaddr aspeed_soc_ast2400_memmap[] = {
     [ASPEED_DEV_LPC]    = 0x1E789000,
     [ASPEED_DEV_IBT]    = 0x1E789140,
     [ASPEED_DEV_I2C]    = 0x1E78A000,
+    [ASPEED_DEV_PECI]   = 0x1E78B000,
     [ASPEED_DEV_ETH1]   = 0x1E660000,
     [ASPEED_DEV_ETH2]   = 0x1E680000,
     [ASPEED_DEV_UART1]  = 0x1E783000,
@@ -81,6 +82,7 @@ static const hwaddr aspeed_soc_ast2500_memmap[] = {
     [ASPEED_DEV_LPC]    = 0x1E789000,
     [ASPEED_DEV_IBT]    = 0x1E789140,
     [ASPEED_DEV_I2C]    = 0x1E78A000,
+    [ASPEED_DEV_PECI]   = 0x1E78B000,
     [ASPEED_DEV_ETH1]   = 0x1E660000,
     [ASPEED_DEV_ETH2]   = 0x1E680000,
     [ASPEED_DEV_UART1]  = 0x1E783000,
@@ -119,6 +121,7 @@ static const int aspeed_soc_ast2400_irqmap[] = {
     [ASPEED_DEV_PWM]    = 28,
     [ASPEED_DEV_LPC]    = 8,
     [ASPEED_DEV_I2C]    = 12,
+    [ASPEED_DEV_PECI]   = 15,
     [ASPEED_DEV_ETH1]   = 2,
     [ASPEED_DEV_ETH2]   = 3,
     [ASPEED_DEV_XDMA]   = 6,
@@ -175,6 +178,8 @@ static void aspeed_soc_init(Object *obj)
     snprintf(typename, sizeof(typename), "aspeed.i2c-%s", socname);
     object_initialize_child(obj, "i2c", &s->i2c, typename);
 
+    object_initialize_child(obj, "peci", &s->peci, TYPE_ASPEED_PECI);
+
     snprintf(typename, sizeof(typename), "aspeed.fmc-%s", socname);
     object_initialize_child(obj, "fmc", &s->fmc, typename);
 
@@ -321,6 +326,15 @@ static void aspeed_soc_realize(DeviceState *dev, Error **errp)
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c), 0,
                        aspeed_soc_get_irq(s, ASPEED_DEV_I2C));
 
+    /* PECI */
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->peci), errp)) {
+        return;
+    }
+    aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->peci), 0,
+                    sc->memmap[ASPEED_DEV_PECI]);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->peci), 0,
+                       aspeed_soc_get_irq(s, ASPEED_DEV_PECI));
+
     /* FMC, The number of CS is set at the board level */
     object_property_set_link(OBJECT(&s->fmc), "dram", OBJECT(s->dram_mr),
                              &error_abort);
diff --git a/hw/misc/aspeed_peci.c b/hw/misc/aspeed_peci.c
new file mode 100644
index 0000000000..93cc672e96
--- /dev/null
+++ b/hw/misc/aspeed_peci.c
@@ -0,0 +1,152 @@
+/*
+ * Aspeed PECI Controller
+ *
+ * Copyright (c) Meta Platforms, Inc. and affiliates. (http://www.meta.com)
+ *
+ * This code is licensed under the GPL version 2 or later. See the COPYING
+ * file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "hw/irq.h"
+#include "hw/misc/aspeed_peci.h"
+#include "hw/registerfields.h"
+#include "trace.h"
+
+#define ASPEED_PECI_CC_RSP_SUCCESS (0x40U)
+
+/* Command Register */
+REG32(PECI_CMD, 0x08)
+    FIELD(PECI_CMD, FIRE, 0, 1)
+
+/* Interrupt Control Register */
+REG32(PECI_INT_CTRL, 0x18)
+
+/* Interrupt Status Register */
+REG32(PECI_INT_STS, 0x1C)
+    FIELD(PECI_INT_STS, CMD_DONE, 0, 1)
+
+/* Rx/Tx Data Buffer Registers */
+REG32(PECI_WR_DATA0, 0x20)
+REG32(PECI_RD_DATA0, 0x30)
+
+static void aspeed_peci_raise_interrupt(AspeedPECIState *s, uint32_t status)
+{
+    trace_aspeed_peci_raise_interrupt(s->regs[R_PECI_INT_CTRL], status);
+
+    s->regs[R_PECI_INT_STS] = s->regs[R_PECI_INT_CTRL] & status;
+    if (!s->regs[R_PECI_INT_STS]) {
+        return;
+    }
+    qemu_irq_raise(s->irq);
+}
+
+static uint64_t aspeed_peci_read(void *opaque, hwaddr offset, unsigned size)
+{
+    AspeedPECIState *s = ASPEED_PECI(opaque);
+    uint64_t data;
+
+    if (offset >= ASPEED_PECI_NR_REGS << 2) {
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "%s: Out-of-bounds read at offset 0x%" HWADDR_PRIx "\n",
+                      __func__, offset);
+        return 0;
+    }
+    data = s->regs[offset >> 2];
+
+    trace_aspeed_peci_read(offset, data);
+    return data;
+}
+
+static void aspeed_peci_write(void *opaque, hwaddr offset, uint64_t data,
+                              unsigned size)
+{
+    AspeedPECIState *s = ASPEED_PECI(opaque);
+
+    trace_aspeed_peci_write(offset, data);
+
+    if (offset >= ASPEED_PECI_NR_REGS << 2) {
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "%s: Out-of-bounds write at offset 0x%" HWADDR_PRIx "\n",
+                      __func__, offset);
+        return;
+    }
+
+    switch (offset) {
+    case A_PECI_INT_STS:
+        s->regs[R_PECI_INT_STS] &= ~data;
+        if (!s->regs[R_PECI_INT_STS]) {
+            qemu_irq_lower(s->irq);
+        }
+        break;
+    case A_PECI_CMD:
+        /*
+         * Only the FIRE bit is writable. Once the command is complete, it
+         * should be cleared. Since we complete the command immediately, the
+         * value is not stored in the register array.
+         */
+        if (!FIELD_EX32(data, PECI_CMD, FIRE)) {
+            break;
+        }
+        if (s->regs[R_PECI_INT_STS]) {
+            qemu_log_mask(LOG_GUEST_ERROR, "%s: Interrupt status must be "
+                          "cleared before firing another command: 0x%08x\n",
+                          __func__, s->regs[R_PECI_INT_STS]);
+            break;
+        }
+        s->regs[R_PECI_RD_DATA0] = ASPEED_PECI_CC_RSP_SUCCESS;
+        s->regs[R_PECI_WR_DATA0] = ASPEED_PECI_CC_RSP_SUCCESS;
+        aspeed_peci_raise_interrupt(s,
+                                    FIELD_DP32(0, PECI_INT_STS, CMD_DONE, 1));
+        break;
+    default:
+        s->regs[offset / sizeof(s->regs[0])] = data;
+        break;
+    }
+}
+
+static const MemoryRegionOps aspeed_peci_ops = {
+    .read = aspeed_peci_read,
+    .write = aspeed_peci_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static void aspeed_peci_realize(DeviceState *dev, Error **errp)
+{
+    AspeedPECIState *s = ASPEED_PECI(dev);
+    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+
+    memory_region_init_io(&s->mmio, OBJECT(s), &aspeed_peci_ops, s,
+                          TYPE_ASPEED_PECI, 0x1000);
+    sysbus_init_mmio(sbd, &s->mmio);
+    sysbus_init_irq(sbd, &s->irq);
+}
+
+static void aspeed_peci_reset(DeviceState *dev)
+{
+    AspeedPECIState *s = ASPEED_PECI(dev);
+
+    memset(s->regs, 0, sizeof(s->regs));
+}
+
+static void aspeed_peci_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->realize = aspeed_peci_realize;
+    dc->reset = aspeed_peci_reset;
+    dc->desc = "Aspeed PECI Controller";
+}
+
+static const TypeInfo aspeed_peci_types[] = {
+    {
+        .name = TYPE_ASPEED_PECI,
+        .parent = TYPE_SYS_BUS_DEVICE,
+        .instance_size = sizeof(AspeedPECIState),
+        .class_init = aspeed_peci_class_init,
+        .abstract = false,
+    },
+};
+
+DEFINE_TYPES(aspeed_peci_types);
diff --git a/hw/misc/meson.build b/hw/misc/meson.build
index 132b7b7344..95268eddc0 100644
--- a/hw/misc/meson.build
+++ b/hw/misc/meson.build
@@ -116,7 +116,8 @@ softmmu_ss.add(when: 'CONFIG_ASPEED_SOC', if_true: files(
   'aspeed_scu.c',
   'aspeed_sbc.c',
   'aspeed_sdmc.c',
-  'aspeed_xdma.c'))
+  'aspeed_xdma.c',
+  'aspeed_peci.c'))
 
 softmmu_ss.add(when: 'CONFIG_MSF2', if_true: files('msf2-sysreg.c'))
 softmmu_ss.add(when: 'CONFIG_NRF51_SOC', if_true: files('nrf51_rng.c'))
diff --git a/hw/misc/trace-events b/hw/misc/trace-events
index f776f24fb5..4d51a80de1 100644
--- a/hw/misc/trace-events
+++ b/hw/misc/trace-events
@@ -210,6 +210,11 @@ aspeed_i3c_device_write(uint32_t deviceid, uint64_t offset, uint64_t data) "I3C
 aspeed_sdmc_write(uint64_t reg, uint64_t data) "reg @0x%" PRIx64 " data: 0x%" PRIx64
 aspeed_sdmc_read(uint64_t reg, uint64_t data) "reg @0x%" PRIx64 " data: 0x%" PRIx64
 
+# aspeed_peci.c
+aspeed_peci_read(uint64_t offset, uint64_t data) "offset 0x%" PRIx64 " data 0x%" PRIx64
+aspeed_peci_write(uint64_t offset, uint64_t data) "offset 0x%" PRIx64 " data 0x%" PRIx64
+aspeed_peci_raise_interrupt(uint32_t ctrl, uint32_t status) "ctrl 0x%" PRIx32 " status 0x%" PRIx32
+
 # bcm2835_property.c
 bcm2835_mbox_property(uint32_t tag, uint32_t bufsize, size_t resplen) "mbox property tag:0x%08x in_sz:%u out_sz:%zu"
 
diff --git a/include/hw/arm/aspeed_soc.h b/include/hw/arm/aspeed_soc.h
index 6cfc063985..e65926a667 100644
--- a/include/hw/arm/aspeed_soc.h
+++ b/include/hw/arm/aspeed_soc.h
@@ -35,6 +35,7 @@
 #include "qom/object.h"
 #include "hw/misc/aspeed_lpc.h"
 #include "hw/misc/unimp.h"
+#include "hw/misc/aspeed_peci.h"
 
 #define ASPEED_SPIS_NUM  2
 #define ASPEED_EHCIS_NUM 2
@@ -77,6 +78,7 @@ struct AspeedSoCState {
     AspeedSDHCIState sdhci;
     AspeedSDHCIState emmc;
     AspeedLPCState lpc;
+    AspeedPECIState peci;
     uint32_t uart_default;
     Clock *sysclk;
     UnimplementedDeviceState iomem;
@@ -153,6 +155,7 @@ enum {
     ASPEED_DEV_LPC,
     ASPEED_DEV_IBT,
     ASPEED_DEV_I2C,
+    ASPEED_DEV_PECI,
     ASPEED_DEV_ETH1,
     ASPEED_DEV_ETH2,
     ASPEED_DEV_ETH3,
diff --git a/include/hw/misc/aspeed_peci.h b/include/hw/misc/aspeed_peci.h
new file mode 100644
index 0000000000..8382707d9f
--- /dev/null
+++ b/include/hw/misc/aspeed_peci.h
@@ -0,0 +1,29 @@
+/*
+ * Aspeed PECI Controller
+ *
+ * Copyright (c) Meta Platforms, Inc. and affiliates. (http://www.meta.com)
+ *
+ * This code is licensed under the GPL version 2 or later. See the COPYING
+ * file in the top-level directory.
+ */
+
+#ifndef ASPEED_PECI_H
+#define ASPEED_PECI_H
+
+#include "hw/sysbus.h"
+
+#define ASPEED_PECI_NR_REGS ((0xFC + 4) >> 2)
+#define TYPE_ASPEED_PECI "aspeed.peci"
+OBJECT_DECLARE_SIMPLE_TYPE(AspeedPECIState, ASPEED_PECI);
+
+struct AspeedPECIState {
+    /* <private> */
+    SysBusDevice parent;
+
+    MemoryRegion mmio;
+    qemu_irq irq;
+
+    uint32_t regs[ASPEED_PECI_NR_REGS];
+};
+
+#endif