From 429c52dba9125fa98b645354b826091099364118 Mon Sep 17 00:00:00 2001 From: Yongbok Kim Date: Tue, 15 Mar 2016 09:59:28 +0000 Subject: hw/mips: add initial Global Config Register support Add initial GCR support to indicate number of VPs present in the system, L2 bypass mode and revision number. Signed-off-by: Yongbok Kim [leon.alrae@imgtec.com: * removed GIC part, * changed commit message, * replaced %lx format spec. with PRIx64, * renamed mips_gcr.{c,h} to mips_cmgcr.{c,h}, * replaced CONFIG_MIPS_GIC with CONFIG_MIPS_CPS] Signed-off-by: Leon Alrae --- hw/misc/Makefile.objs | 1 + hw/misc/mips_cmgcr.c | 107 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 108 insertions(+) create mode 100644 hw/misc/mips_cmgcr.c (limited to 'hw/misc') diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs index 44ac2e1..b00a5d0 100644 --- a/hw/misc/Makefile.objs +++ b/hw/misc/Makefile.objs @@ -43,6 +43,7 @@ obj-$(CONFIG_SLAVIO) += slavio_misc.o obj-$(CONFIG_ZYNQ) += zynq_slcr.o obj-$(CONFIG_ZYNQ) += zynq-xadc.o obj-$(CONFIG_STM32F2XX_SYSCFG) += stm32f2xx_syscfg.o +obj-$(CONFIG_MIPS_CPS) += mips_cmgcr.o obj-$(CONFIG_PVPANIC) += pvpanic.o obj-$(CONFIG_EDU) += edu.o diff --git a/hw/misc/mips_cmgcr.c b/hw/misc/mips_cmgcr.c new file mode 100644 index 0000000..4c93a133 --- /dev/null +++ b/hw/misc/mips_cmgcr.c @@ -0,0 +1,107 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + * Authors: Sanjay Lal + * + * Copyright (C) 2015 Imagination Technologies + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "hw/hw.h" +#include "hw/sysbus.h" +#include "sysemu/sysemu.h" +#include "hw/misc/mips_cmgcr.h" + +/* Read GCR registers */ +static uint64_t gcr_read(void *opaque, hwaddr addr, unsigned size) +{ + MIPSGCRState *gcr = (MIPSGCRState *) opaque; + + switch (addr) { + /* Global Control Block Register */ + case GCR_CONFIG_OFS: + /* Set PCORES to 0 */ + return 0; + case GCR_BASE_OFS: + return gcr->gcr_base; + case GCR_REV_OFS: + return gcr->gcr_rev; + case GCR_L2_CONFIG_OFS: + /* L2 BYPASS */ + return GCR_L2_CONFIG_BYPASS_MSK; + /* Core-Local and Core-Other Control Blocks */ + case MIPS_CLCB_OFS + GCR_CL_CONFIG_OFS: + case MIPS_COCB_OFS + GCR_CL_CONFIG_OFS: + /* Set PVP to # of VPs - 1 */ + return gcr->num_vps - 1; + case MIPS_CLCB_OFS + GCR_CL_OTHER_OFS: + return 0; + default: + qemu_log_mask(LOG_UNIMP, "Read %d bytes at GCR offset 0x%" HWADDR_PRIx + "\n", size, addr); + return 0; + } + return 0; +} + +/* Write GCR registers */ +static void gcr_write(void *opaque, hwaddr addr, uint64_t data, unsigned size) +{ + switch (addr) { + default: + qemu_log_mask(LOG_UNIMP, "Write %d bytes at GCR offset 0x%" HWADDR_PRIx + " 0x%" PRIx64 "\n", size, addr, data); + break; + } +} + +static const MemoryRegionOps gcr_ops = { + .read = gcr_read, + .write = gcr_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .impl = { + .max_access_size = 8, + }, +}; + +static void mips_gcr_init(Object *obj) +{ + SysBusDevice *sbd = SYS_BUS_DEVICE(obj); + MIPSGCRState *s = MIPS_GCR(obj); + + memory_region_init_io(&s->iomem, OBJECT(s), &gcr_ops, s, + "mips-gcr", GCR_ADDRSPACE_SZ); + sysbus_init_mmio(sbd, &s->iomem); +} + +static Property mips_gcr_properties[] = { + DEFINE_PROP_INT32("num-vp", MIPSGCRState, num_vps, 1), + DEFINE_PROP_INT32("gcr-rev", MIPSGCRState, gcr_rev, 0x800), + DEFINE_PROP_UINT64("gcr-base", MIPSGCRState, gcr_base, GCR_BASE_ADDR), + DEFINE_PROP_END_OF_LIST(), +}; + +static void mips_gcr_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + dc->props = mips_gcr_properties; +} + +static const TypeInfo mips_gcr_info = { + .name = TYPE_MIPS_GCR, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(MIPSGCRState), + .instance_init = mips_gcr_init, + .class_init = mips_gcr_class_init, +}; + +static void mips_gcr_register_types(void) +{ + type_register_static(&mips_gcr_info); +} + +type_init(mips_gcr_register_types) -- cgit v1.1