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Thu, 11 Jun 2020 15:30:31 -0700 (PDT) Date: Thu, 11 Jun 2020 15:30:06 -0700 In-Reply-To: <20200611223016.259837-1-hskinnemoen@google.com> Message-Id: <20200611223016.259837-3-hskinnemoen@google.com> Mime-Version: 1.0 References: <20200611223016.259837-1-hskinnemoen@google.com> X-Mailer: git-send-email 2.27.0.290.gba653c62da-goog Subject: [PATCH v2 02/12] hw/misc: Add NPCM7xx System Global Control Registers device model From: Havard Skinnemoen To: peter.maydell@linaro.org, clg@kaod.org, joel@jms.id.au Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, Avi.Fishman@nuvoton.com, kfting@nuvoton.com, Havard Skinnemoen Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::84a; envelope-from=3h7DiXgsKCnAVgYWbbSacSbUccUZS.QcaeSai-RSjSZbcbUbi.cfU@flex--hskinnemoen.bounces.google.com; helo=mail-qt1-x84a.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -105 X-Spam_score: -10.6 X-Spam_bar: ---------- X-Spam_report: (-10.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @google.com) Content-Type: text/plain; charset="utf-8" Implement a device model for the System Global Control Registers in the NPCM730 and NPCM750 BMC SoCs. This is primarily used to enable SMP boot (the boot ROM spins reading the SCRPAD register) and DDR memory initialization; other registers are best effort for now. The reset values of the MDLR and PWRON registers are determined by the SoC variant (730 vs 750) and board straps respectively. Change-Id: Ifeb596be28f4d5463f0b386df38b3bbbb57677d1 Reviewed-by: Joel Stanley Reviewed-by: C=C3=A9dric Le Goater Signed-off-by: Havard Skinnemoen --- MAINTAINERS | 8 ++ hw/misc/Makefile.objs | 1 + hw/misc/npcm7xx_gcr.c | 211 ++++++++++++++++++++++++++++++++++ hw/misc/trace-events | 4 + include/hw/misc/npcm7xx_gcr.h | 76 ++++++++++++ 5 files changed, 300 insertions(+) create mode 100644 hw/misc/npcm7xx_gcr.c create mode 100644 include/hw/misc/npcm7xx_gcr.h diff --git a/MAINTAINERS b/MAINTAINERS index 3abe3faa4e..efe7f499e3 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -721,6 +721,14 @@ S: Odd Fixes F: hw/arm/musicpal.c F: docs/system/arm/musicpal.rst =20 +Nuvoton NPCM7xx +M: Havard Skinnemoen +M: Tyrone Ting +L: qemu-arm@nongnu.org +S: Supported +F: hw/misc/npcm7xx* +F: include/hw/misc/npcm7xx* + nSeries M: Andrzej Zaborowski M: Peter Maydell diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs index 5aaca8a039..40a9d1c01e 100644 --- a/hw/misc/Makefile.objs +++ b/hw/misc/Makefile.objs @@ -51,6 +51,7 @@ common-obj-$(CONFIG_IMX) +=3D imx_rngc.o common-obj-$(CONFIG_MILKYMIST) +=3D milkymist-hpdmc.o common-obj-$(CONFIG_MILKYMIST) +=3D milkymist-pfpu.o common-obj-$(CONFIG_MAINSTONE) +=3D mst_fpga.o +common-obj-$(CONFIG_NPCM7XX) +=3D npcm7xx_gcr.o common-obj-$(CONFIG_OMAP) +=3D omap_clk.o common-obj-$(CONFIG_OMAP) +=3D omap_gpmc.o common-obj-$(CONFIG_OMAP) +=3D omap_l4.o diff --git a/hw/misc/npcm7xx_gcr.c b/hw/misc/npcm7xx_gcr.c new file mode 100644 index 0000000000..af03bf4a01 --- /dev/null +++ b/hw/misc/npcm7xx_gcr.c @@ -0,0 +1,211 @@ +/* + * Nuvoton NPCM7xx System Global Control Registers. + * + * Copyright 2020 Google LLC + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include "qemu/osdep.h" + +#include "hw/misc/npcm7xx_gcr.h" +#include "hw/qdev-properties.h" +#include "qapi/error.h" +#include "qemu/log.h" +#include "qemu/module.h" +#include "qemu/units.h" + +#include "trace.h" + +static const uint32_t cold_reset_values[NPCM7XX_GCR_NR_REGS] =3D { + [NPCM7XX_GCR_PDID] =3D 0x04A92750, /* Poleg A1 */ + [NPCM7XX_GCR_MISCPE] =3D 0x0000FFFF, + [NPCM7XX_GCR_SPSWC] =3D 0x00000003, + [NPCM7XX_GCR_INTCR] =3D 0x0000035E, + [NPCM7XX_GCR_HIFCR] =3D 0x0000004E, + [NPCM7XX_GCR_INTCR2] =3D (1U << 19), /* DDR initialized */ + [NPCM7XX_GCR_RESSR] =3D 0x80000000, + [NPCM7XX_GCR_DSCNT] =3D 0x000000c0, + [NPCM7XX_GCR_DAVCLVLR] =3D 0x5A00F3CF, + [NPCM7XX_GCR_SCRPAD] =3D 0x00000008, + [NPCM7XX_GCR_USB1PHYCTL] =3D 0x034730E4, + [NPCM7XX_GCR_USB2PHYCTL] =3D 0x034730E4, +}; + +static uint64_t npcm7xx_gcr_read(void *opaque, hwaddr offset, unsigned siz= e) +{ + uint32_t reg =3D offset / sizeof(uint32_t); + NPCM7xxGCRState *s =3D opaque; + + if (reg >=3D NPCM7XX_GCR_NR_REGS) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: offset 0x%04x out of range\n", + __func__, (unsigned int)offset); + return 0; + } + + trace_npcm7xx_gcr_read(offset, s->regs[reg]); + + return s->regs[reg]; +} + +static void npcm7xx_gcr_write(void *opaque, hwaddr offset, + uint64_t v, unsigned size) +{ + uint32_t reg =3D offset / sizeof(uint32_t); + NPCM7xxGCRState *s =3D opaque; + uint32_t value =3D v; + + trace_npcm7xx_gcr_write(offset, value); + + if (reg >=3D NPCM7XX_GCR_NR_REGS) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: offset 0x%04x out of range\n", + __func__, (unsigned int)offset); + return; + } + + switch (reg) { + case NPCM7XX_GCR_PDID: + case NPCM7XX_GCR_PWRON: + case NPCM7XX_GCR_INTSR: + qemu_log_mask(LOG_GUEST_ERROR, "%s: register @ 0x%04x is read-only= \n", + __func__, (unsigned int)offset); + return; + + case NPCM7XX_GCR_RESSR: + case NPCM7XX_GCR_CP2BST: + /* Write 1 to clear */ + value =3D s->regs[reg] & ~value; + break; + + case NPCM7XX_GCR_RLOCKR1: + case NPCM7XX_GCR_MDLR: + /* Write 1 to set */ + value |=3D s->regs[reg]; + break; + }; + + s->regs[reg] =3D value; +} + +static const struct MemoryRegionOps npcm7xx_gcr_ops =3D { + .read =3D npcm7xx_gcr_read, + .write =3D npcm7xx_gcr_write, + .endianness =3D DEVICE_LITTLE_ENDIAN, + .valid =3D { + .min_access_size =3D 4, + .max_access_size =3D 4, + .unaligned =3D false, + }, +}; + +static void npcm7xx_gcr_enter_reset(Object *obj, ResetType type) +{ + NPCM7xxGCRState *s =3D NPCM7XX_GCR(obj); + + QEMU_BUILD_BUG_ON(sizeof(s->regs) !=3D sizeof(cold_reset_values)); + + switch (type) { + case RESET_TYPE_COLD: + memcpy(s->regs, cold_reset_values, sizeof(s->regs)); + s->regs[NPCM7XX_GCR_PWRON] =3D s->reset_pwron; + s->regs[NPCM7XX_GCR_MDLR] =3D s->reset_mdlr; + s->regs[NPCM7XX_GCR_INTCR3] =3D s->reset_intcr3; + break; + } +} + +static void npcm7xx_gcr_realize(DeviceState *dev, Error **errp) +{ + NPCM7xxGCRState *s =3D NPCM7XX_GCR(dev); + uint64_t dram_size; + + if (!s->dram) { + error_setg(errp, "npcm7xx_gcr: 'dram' link not set"); + return; + } + + /* Power-on reset value */ + s->reset_intcr3 =3D 0x00001002; + + /* + * The GMMAP (Graphics Memory Map) field is used by u-boot to detect t= he + * DRAM size, and is normally initialized by the boot block as part of= DRAM + * training. However, since we don't have a complete emulation of the + * memory controller and try to make it look like it has already been + * initialized, the boot block will skip this initialization, and we n= eed + * to make sure this field is set correctly up front. + * + * WARNING: some versions of u-boot only looks at bits 8 and 9, so 2 G= iB or + * more of DRAM will be interpreted as 128 MiB. + * + * https://github.com/Nuvoton-Israel/u-boot/blob/2aef993bd2aafeb5408db= aad0f3ce099ee40c4aa/board/nuvoton/poleg/poleg.c#L244 + */ + dram_size =3D int128_get64(s->dram->size); + if (dram_size >=3D 2 * GiB) { + s->reset_intcr3 |=3D 4 << 8; + } else if (dram_size >=3D 1 * GiB) { + s->reset_intcr3 |=3D 3 << 8; + } else if (dram_size >=3D 512 * MiB) { + s->reset_intcr3 |=3D 2 << 8; + } else if (dram_size >=3D 256 * MiB) { + s->reset_intcr3 |=3D 1 << 8; + } else if (dram_size >=3D 128 * MiB) { + s->reset_intcr3 |=3D 0 << 8; + } else { + error_setg(errp, + "npcm7xx_gcr: DRAM size %" PRIu64 + " is too small (need 128 MiB minimum)", + dram_size); + return; + } +} + +static void npcm7xx_gcr_init(Object *obj) +{ + NPCM7xxGCRState *s =3D NPCM7XX_GCR(obj); + + memory_region_init_io(&s->iomem, obj, &npcm7xx_gcr_ops, s, + TYPE_NPCM7XX_GCR, 4 * KiB); + sysbus_init_mmio(&s->parent, &s->iomem); +} + +static Property npcm7xx_gcr_properties[] =3D { + DEFINE_PROP_UINT32("disabled-modules", NPCM7xxGCRState, reset_mdlr, 0), + DEFINE_PROP_UINT32("power-on-straps", NPCM7xxGCRState, reset_pwron, 0), + DEFINE_PROP_LINK("dram", NPCM7xxGCRState, dram, TYPE_MEMORY_REGION, + MemoryRegion *), + DEFINE_PROP_END_OF_LIST(), +}; + +static void npcm7xx_gcr_class_init(ObjectClass *klass, void *data) +{ + ResettableClass *rc =3D RESETTABLE_CLASS(klass); + DeviceClass *dc =3D DEVICE_CLASS(klass); + + dc->desc =3D "NPCM7xx System Global Control Registers"; + dc->realize =3D npcm7xx_gcr_realize; + rc->phases.enter =3D npcm7xx_gcr_enter_reset; + + device_class_set_props(dc, npcm7xx_gcr_properties); +} + +static const TypeInfo npcm7xx_gcr_info =3D { + .name =3D TYPE_NPCM7XX_GCR, + .parent =3D TYPE_SYS_BUS_DEVICE, + .instance_size =3D sizeof(NPCM7xxGCRState), + .instance_init =3D npcm7xx_gcr_init, + .class_init =3D npcm7xx_gcr_class_init, +}; + +static void npcm7xx_gcr_register_type(void) +{ + type_register_static(&npcm7xx_gcr_info); +} +type_init(npcm7xx_gcr_register_type); diff --git a/hw/misc/trace-events b/hw/misc/trace-events index 5561746866..1a20ce659a 100644 --- a/hw/misc/trace-events +++ b/hw/misc/trace-events @@ -107,6 +107,10 @@ mos6522_set_sr_int(void) "set sr_int" mos6522_write(uint64_t addr, uint64_t val) "reg=3D0x%"PRIx64 " val=3D0x%"P= RIx64 mos6522_read(uint64_t addr, unsigned val) "reg=3D0x%"PRIx64 " val=3D0x%x" =20 +# npcm7xx_gcr.c +npcm7xx_gcr_read(uint64_t offset, uint32_t value) " offset: 0x%04" PRIx64 = " value: 0x%08" PRIx32 +npcm7xx_gcr_write(uint64_t offset, uint32_t value) "offset: 0x%04" PRIx64 = " value: 0x%08" PRIx32 + # stm32f4xx_syscfg stm32f4xx_syscfg_set_irq(int gpio, int line, int level) "Interupt: GPIO: %= d, Line: %d; Level: %d" stm32f4xx_pulse_exti(int irq) "Pulse EXTI: %d" diff --git a/include/hw/misc/npcm7xx_gcr.h b/include/hw/misc/npcm7xx_gcr.h new file mode 100644 index 0000000000..a881ac41a3 --- /dev/null +++ b/include/hw/misc/npcm7xx_gcr.h @@ -0,0 +1,76 @@ +/* + * Nuvoton NPCM7xx System Global Control Registers. + * + * Copyright 2020 Google LLC + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#ifndef NPCM7XX_GCR_H +#define NPCM7XX_GCR_H + +#include "exec/memory.h" +#include "hw/sysbus.h" + +enum NPCM7xxGCRRegisters { + NPCM7XX_GCR_PDID, + NPCM7XX_GCR_PWRON, + NPCM7XX_GCR_MFSEL1 =3D 0x0C / sizeof(uint32_t), + NPCM7XX_GCR_MFSEL2, + NPCM7XX_GCR_MISCPE, + NPCM7XX_GCR_SPSWC =3D 0x038 / sizeof(uint32_t), + NPCM7XX_GCR_INTCR, + NPCM7XX_GCR_INTSR, + NPCM7XX_GCR_HIFCR =3D 0x050 / sizeof(uint32_t), + NPCM7XX_GCR_INTCR2 =3D 0x060 / sizeof(uint32_t), + NPCM7XX_GCR_MFSEL3, + NPCM7XX_GCR_SRCNT, + NPCM7XX_GCR_RESSR, + NPCM7XX_GCR_RLOCKR1, + NPCM7XX_GCR_FLOCKR1, + NPCM7XX_GCR_DSCNT, + NPCM7XX_GCR_MDLR, + NPCM7XX_GCR_SCRPAD3, + NPCM7XX_GCR_SCRPAD2, + NPCM7XX_GCR_DAVCLVLR =3D 0x098 / sizeof(uint32_t), + NPCM7XX_GCR_INTCR3, + NPCM7XX_GCR_VSINTR =3D 0x0AC / sizeof(uint32_t), + NPCM7XX_GCR_MFSEL4, + NPCM7XX_GCR_CPBPNTR =3D 0x0C4 / sizeof(uint32_t), + NPCM7XX_GCR_CPCTL =3D 0x0D0 / sizeof(uint32_t), + NPCM7XX_GCR_CP2BST, + NPCM7XX_GCR_B2CPNT, + NPCM7XX_GCR_CPPCTL, + NPCM7XX_GCR_I2CSEGSEL, + NPCM7XX_GCR_I2CSEGCTL, + NPCM7XX_GCR_VSRCR, + NPCM7XX_GCR_MLOCKR, + NPCM7XX_GCR_SCRPAD =3D 0x013C / sizeof(uint32_t), + NPCM7XX_GCR_USB1PHYCTL, + NPCM7XX_GCR_USB2PHYCTL, + NPCM7XX_GCR_NR_REGS, +}; + +typedef struct NPCM7xxGCRState { + SysBusDevice parent; + + MemoryRegion iomem; + + uint32_t regs[NPCM7XX_GCR_NR_REGS]; + + uint32_t reset_pwron; + uint32_t reset_mdlr; + uint32_t reset_intcr3; + MemoryRegion *dram; +} NPCM7xxGCRState; + +#define TYPE_NPCM7XX_GCR "npcm7xx-gcr" +#define NPCM7XX_GCR(obj) OBJECT_CHECK(NPCM7xxGCRState, (obj), TYPE_NPCM7XX= _GCR) + +#endif /* NPCM7XX_GCR_H */ --=20 2.27.0.290.gba653c62da-goog