diff options
Diffstat (limited to 'hw/ppc')
| -rw-r--r-- | hw/ppc/pnv.c | 4 | ||||
| -rw-r--r-- | hw/ppc/pnv_core.c | 50 |
2 files changed, 54 insertions, 0 deletions
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 96ba36cc27..df55a89cb9 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -625,6 +625,10 @@ static void pnv_chip_realize(DeviceState *dev, Error **errp) object_property_set_bool(OBJECT(pnv_core), true, "realized", &error_fatal); object_unref(OBJECT(pnv_core)); + + /* Each core has an XSCOM MMIO region */ + pnv_xscom_add_subregion(chip, PNV_XSCOM_EX_CORE_BASE(core_hwid), + &PNV_CORE(pnv_core)->xscom_regs); i++; } g_free(typename); diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c index 04713caa3b..2acda9637d 100644 --- a/hw/ppc/pnv_core.c +++ b/hw/ppc/pnv_core.c @@ -19,6 +19,7 @@ #include "qemu/osdep.h" #include "sysemu/sysemu.h" #include "qapi/error.h" +#include "qemu/log.h" #include "target-ppc/cpu.h" #include "hw/ppc/ppc.h" #include "hw/ppc/pnv.h" @@ -63,6 +64,51 @@ static void powernv_cpu_init(PowerPCCPU *cpu, Error **errp) qemu_register_reset(powernv_cpu_reset, cpu); } +/* + * These values are read by the PowerNV HW monitors under Linux + */ +#define PNV_XSCOM_EX_DTS_RESULT0 0x50000 +#define PNV_XSCOM_EX_DTS_RESULT1 0x50001 + +static uint64_t pnv_core_xscom_read(void *opaque, hwaddr addr, + unsigned int width) +{ + uint32_t offset = addr >> 3; + uint64_t val = 0; + + /* The result should be 38 C */ + switch (offset) { + case PNV_XSCOM_EX_DTS_RESULT0: + val = 0x26f024f023f0000ull; + break; + case PNV_XSCOM_EX_DTS_RESULT1: + val = 0x24f000000000000ull; + break; + default: + qemu_log_mask(LOG_UNIMP, "Warning: reading reg=0x%" HWADDR_PRIx, + addr); + } + + return val; +} + +static void pnv_core_xscom_write(void *opaque, hwaddr addr, uint64_t val, + unsigned int width) +{ + qemu_log_mask(LOG_UNIMP, "Warning: writing to reg=0x%" HWADDR_PRIx, + addr); +} + +static const MemoryRegionOps pnv_core_xscom_ops = { + .read = pnv_core_xscom_read, + .write = pnv_core_xscom_write, + .valid.min_access_size = 8, + .valid.max_access_size = 8, + .impl.min_access_size = 8, + .impl.max_access_size = 8, + .endianness = DEVICE_BIG_ENDIAN, +}; + static void pnv_core_realize_child(Object *child, Error **errp) { Error *local_err = NULL; @@ -118,6 +164,10 @@ static void pnv_core_realize(DeviceState *dev, Error **errp) goto err; } } + + snprintf(name, sizeof(name), "xscom-core.%d", cc->core_id); + pnv_xscom_region_init(&pc->xscom_regs, OBJECT(dev), &pnv_core_xscom_ops, + pc, name, PNV_XSCOM_EX_CORE_SIZE); return; err: |