From 2ecf17264debe1bc3399fe587690c78d03e8401b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Date: Tue, 9 Mar 2021 12:01:28 +0100 Subject: hw/misc: Add a basic Aspeed LPC controller model MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is a very minimal framework to access registers which are used to configure the AHB memory mapping of the flash chips on the LPC HC Firmware address space. Signed-off-by: Cédric Le Goater Signed-off-by: Andrew Jeffery Message-Id: <20210302014317.915120-5-andrew@aj.id.au> Signed-off-by: Cédric Le Goater --- docs/system/arm/aspeed.rst | 2 +- hw/arm/aspeed_ast2600.c | 10 ++++ hw/arm/aspeed_soc.c | 10 ++++ hw/misc/aspeed_lpc.c | 131 +++++++++++++++++++++++++++++++++++++++++++ hw/misc/meson.build | 7 ++- include/hw/arm/aspeed_soc.h | 2 + include/hw/misc/aspeed_lpc.h | 32 +++++++++++ 7 files changed, 192 insertions(+), 2 deletions(-) create mode 100644 hw/misc/aspeed_lpc.c create mode 100644 include/hw/misc/aspeed_lpc.h diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst index 8972aa3..d1fb8f2 100644 --- a/docs/system/arm/aspeed.rst +++ b/docs/system/arm/aspeed.rst @@ -48,6 +48,7 @@ Supported devices * UART * Ethernet controllers * Front LEDs (PCA9552 on I2C bus) + * LPC Peripheral Controller (a subset of subdevices are supported) Missing devices @@ -56,7 +57,6 @@ Missing devices * Coprocessor support * ADC (out of tree implementation) * PWM and Fan Controller - * LPC Bus Controller * Slave GPIO Controller * Super I/O Controller * Hash/Crypto Engine diff --git a/hw/arm/aspeed_ast2600.c b/hw/arm/aspeed_ast2600.c index 7635d4b..78a8d6e 100644 --- a/hw/arm/aspeed_ast2600.c +++ b/hw/arm/aspeed_ast2600.c @@ -211,6 +211,8 @@ static void aspeed_soc_ast2600_init(Object *obj) object_initialize_child(obj, "emmc-controller.sdhci", &s->emmc.slots[0], TYPE_SYSBUS_SDHCI); + + object_initialize_child(obj, "lpc", &s->lpc, TYPE_ASPEED_LPC); } /* @@ -462,6 +464,14 @@ static void aspeed_soc_ast2600_realize(DeviceState *dev, Error **errp) sysbus_mmio_map(SYS_BUS_DEVICE(&s->emmc), 0, sc->memmap[ASPEED_DEV_EMMC]); sysbus_connect_irq(SYS_BUS_DEVICE(&s->emmc), 0, aspeed_soc_get_irq(s, ASPEED_DEV_EMMC)); + + /* LPC */ + if (!sysbus_realize(SYS_BUS_DEVICE(&s->lpc), errp)) { + return; + } + sysbus_mmio_map(SYS_BUS_DEVICE(&s->lpc), 0, sc->memmap[ASPEED_DEV_LPC]); + sysbus_connect_irq(SYS_BUS_DEVICE(&s->lpc), 0, + aspeed_soc_get_irq(s, ASPEED_DEV_LPC)); } static void aspeed_soc_ast2600_class_init(ObjectClass *oc, void *data) diff --git a/hw/arm/aspeed_soc.c b/hw/arm/aspeed_soc.c index 7eefd54..4f098da 100644 --- a/hw/arm/aspeed_soc.c +++ b/hw/arm/aspeed_soc.c @@ -211,6 +211,8 @@ static void aspeed_soc_init(Object *obj) object_initialize_child(obj, "sdhci[*]", &s->sdhci.slots[i], TYPE_SYSBUS_SDHCI); } + + object_initialize_child(obj, "lpc", &s->lpc, TYPE_ASPEED_LPC); } static void aspeed_soc_realize(DeviceState *dev, Error **errp) @@ -393,6 +395,14 @@ static void aspeed_soc_realize(DeviceState *dev, Error **errp) sc->memmap[ASPEED_DEV_SDHCI]); sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0, aspeed_soc_get_irq(s, ASPEED_DEV_SDHCI)); + + /* LPC */ + if (!sysbus_realize(SYS_BUS_DEVICE(&s->lpc), errp)) { + return; + } + sysbus_mmio_map(SYS_BUS_DEVICE(&s->lpc), 0, sc->memmap[ASPEED_DEV_LPC]); + sysbus_connect_irq(SYS_BUS_DEVICE(&s->lpc), 0, + aspeed_soc_get_irq(s, ASPEED_DEV_LPC)); } static Property aspeed_soc_properties[] = { DEFINE_PROP_LINK("dram", AspeedSoCState, dram_mr, TYPE_MEMORY_REGION, diff --git a/hw/misc/aspeed_lpc.c b/hw/misc/aspeed_lpc.c new file mode 100644 index 0000000..e668e98 --- /dev/null +++ b/hw/misc/aspeed_lpc.c @@ -0,0 +1,131 @@ +/* + * ASPEED LPC Controller + * + * Copyright (C) 2017-2018 IBM Corp. + * + * 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 "qemu/error-report.h" +#include "hw/misc/aspeed_lpc.h" +#include "qapi/error.h" +#include "hw/qdev-properties.h" +#include "migration/vmstate.h" + +#define TO_REG(offset) ((offset) >> 2) + +#define HICR0 TO_REG(0x00) +#define HICR1 TO_REG(0x04) +#define HICR2 TO_REG(0x08) +#define HICR3 TO_REG(0x0C) +#define HICR4 TO_REG(0x10) +#define HICR5 TO_REG(0x80) +#define HICR6 TO_REG(0x84) +#define HICR7 TO_REG(0x88) +#define HICR8 TO_REG(0x8C) + +static uint64_t aspeed_lpc_read(void *opaque, hwaddr offset, unsigned size) +{ + AspeedLPCState *s = ASPEED_LPC(opaque); + int reg = TO_REG(offset); + + if (reg >= ARRAY_SIZE(s->regs)) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Out-of-bounds read at offset 0x%" HWADDR_PRIx "\n", + __func__, offset); + return 0; + } + + return s->regs[reg]; +} + +static void aspeed_lpc_write(void *opaque, hwaddr offset, uint64_t data, + unsigned int size) +{ + AspeedLPCState *s = ASPEED_LPC(opaque); + int reg = TO_REG(offset); + + if (reg >= ARRAY_SIZE(s->regs)) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Out-of-bounds write at offset 0x%" HWADDR_PRIx "\n", + __func__, offset); + return; + } + + s->regs[reg] = data; +} + +static const MemoryRegionOps aspeed_lpc_ops = { + .read = aspeed_lpc_read, + .write = aspeed_lpc_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 4, + }, +}; + +static void aspeed_lpc_reset(DeviceState *dev) +{ + struct AspeedLPCState *s = ASPEED_LPC(dev); + + memset(s->regs, 0, sizeof(s->regs)); + + s->regs[HICR7] = s->hicr7; +} + +static void aspeed_lpc_realize(DeviceState *dev, Error **errp) +{ + AspeedLPCState *s = ASPEED_LPC(dev); + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + + sysbus_init_irq(sbd, &s->irq); + + memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_lpc_ops, s, + TYPE_ASPEED_LPC, 0x1000); + + sysbus_init_mmio(sbd, &s->iomem); +} + +static const VMStateDescription vmstate_aspeed_lpc = { + .name = TYPE_ASPEED_LPC, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32_ARRAY(regs, AspeedLPCState, ASPEED_LPC_NR_REGS), + VMSTATE_END_OF_LIST(), + } +}; + +static Property aspeed_lpc_properties[] = { + DEFINE_PROP_UINT32("hicr7", AspeedLPCState, hicr7, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static void aspeed_lpc_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = aspeed_lpc_realize; + dc->reset = aspeed_lpc_reset; + dc->desc = "Aspeed LPC Controller", + dc->vmsd = &vmstate_aspeed_lpc; + device_class_set_props(dc, aspeed_lpc_properties); +} + +static const TypeInfo aspeed_lpc_info = { + .name = TYPE_ASPEED_LPC, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(AspeedLPCState), + .class_init = aspeed_lpc_class_init, +}; + +static void aspeed_lpc_register_types(void) +{ + type_register_static(&aspeed_lpc_info); +} + +type_init(aspeed_lpc_register_types); diff --git a/hw/misc/meson.build b/hw/misc/meson.build index 6292839..e326338 100644 --- a/hw/misc/meson.build +++ b/hw/misc/meson.build @@ -102,7 +102,12 @@ softmmu_ss.add(when: 'CONFIG_ARMSSE_MHU', if_true: files('armsse-mhu.c')) softmmu_ss.add(when: 'CONFIG_PVPANIC_ISA', if_true: files('pvpanic-isa.c')) softmmu_ss.add(when: 'CONFIG_PVPANIC_PCI', if_true: files('pvpanic-pci.c')) softmmu_ss.add(when: 'CONFIG_AUX', if_true: files('auxbus.c')) -softmmu_ss.add(when: 'CONFIG_ASPEED_SOC', if_true: files('aspeed_scu.c', 'aspeed_sdmc.c', 'aspeed_xdma.c')) +softmmu_ss.add(when: 'CONFIG_ASPEED_SOC', if_true: files( + 'aspeed_lpc.c', + 'aspeed_scu.c', + 'aspeed_sdmc.c', + 'aspeed_xdma.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/include/hw/arm/aspeed_soc.h b/include/hw/arm/aspeed_soc.h index 11cfe6e..42c64bd 100644 --- a/include/hw/arm/aspeed_soc.h +++ b/include/hw/arm/aspeed_soc.h @@ -28,6 +28,7 @@ #include "hw/sd/aspeed_sdhci.h" #include "hw/usb/hcd-ehci.h" #include "qom/object.h" +#include "hw/misc/aspeed_lpc.h" #define ASPEED_SPIS_NUM 2 #define ASPEED_EHCIS_NUM 2 @@ -61,6 +62,7 @@ struct AspeedSoCState { AspeedGPIOState gpio_1_8v; AspeedSDHCIState sdhci; AspeedSDHCIState emmc; + AspeedLPCState lpc; }; #define TYPE_ASPEED_SOC "aspeed-soc" diff --git a/include/hw/misc/aspeed_lpc.h b/include/hw/misc/aspeed_lpc.h new file mode 100644 index 0000000..0fbb7f6 --- /dev/null +++ b/include/hw/misc/aspeed_lpc.h @@ -0,0 +1,32 @@ +/* + * ASPEED LPC Controller + * + * Copyright (C) 2017-2018 IBM Corp. + * + * This code is licensed under the GPL version 2 or later. See + * the COPYING file in the top-level directory. + */ + +#ifndef ASPEED_LPC_H +#define ASPEED_LPC_H + +#include "hw/sysbus.h" + +#define TYPE_ASPEED_LPC "aspeed.lpc" +#define ASPEED_LPC(obj) OBJECT_CHECK(AspeedLPCState, (obj), TYPE_ASPEED_LPC) + +#define ASPEED_LPC_NR_REGS (0x260 >> 2) + +typedef struct AspeedLPCState { + /* */ + SysBusDevice parent; + + /*< public >*/ + MemoryRegion iomem; + qemu_irq irq; + + uint32_t regs[ASPEED_LPC_NR_REGS]; + uint32_t hicr7; +} AspeedLPCState; + +#endif /* _ASPEED_LPC_H_ */ -- cgit v1.1