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Re: [Qemu-devel] [PATCH 15/17] ppc: add mvme3100 machine
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From: |
David Gibson |
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Subject: |
Re: [Qemu-devel] [PATCH 15/17] ppc: add mvme3100 machine |
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Date: |
Wed, 20 Dec 2017 15:05:24 +1100 |
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User-agent: |
Mutt/1.9.1 (2017-09-22) |
On Sun, Nov 26, 2017 at 03:59:13PM -0600, Michael Davidsaver wrote:
> Signed-off-by: Michael Davidsaver <address@hidden>
> ---
> default-configs/ppc-softmmu.mak | 1 +
> hw/ppc/Makefile.objs | 1 +
> hw/ppc/mvme3100.c | 740
> ++++++++++++++++++++++++++++++++++++++++
> hw/ppc/mvme3100_cpld.c | 192 +++++++++++
> 4 files changed, 934 insertions(+)
> create mode 100644 hw/ppc/mvme3100.c
> create mode 100644 hw/ppc/mvme3100_cpld.c
>
> diff --git a/default-configs/ppc-softmmu.mak b/default-configs/ppc-softmmu.mak
> index bb225c6e46..3777194a4a 100644
> --- a/default-configs/ppc-softmmu.mak
> +++ b/default-configs/ppc-softmmu.mak
> @@ -52,3 +52,4 @@ CONFIG_SERIAL_ISA=y
> CONFIG_MC146818RTC=y
> CONFIG_ISA_TESTDEV=y
> CONFIG_RS6000_MC=y
> +CONFIG_DSRTCI2C=y
> diff --git a/hw/ppc/Makefile.objs b/hw/ppc/Makefile.objs
> index c1a63d0c39..c1118aaa42 100644
> --- a/hw/ppc/Makefile.objs
> +++ b/hw/ppc/Makefile.objs
> @@ -26,5 +26,6 @@ obj-$(CONFIG_MAC) += mac_newworld.o
> obj-$(CONFIG_E500) += e500.o mpc8544ds.o e500plat.o
> obj-$(CONFIG_E500) += ppce500_spin.o
> obj-$(CONFIG_E500) += e500_ccsr.o
> +obj-$(CONFIG_E500) += mvme3100.o mvme3100_cpld.o
> # PowerPC 440 Xilinx ML507 reference board.
> obj-$(CONFIG_XILINX) += virtex_ml507.o
> diff --git a/hw/ppc/mvme3100.c b/hw/ppc/mvme3100.c
> new file mode 100644
> index 0000000000..8eb6a3a9a4
> --- /dev/null
> +++ b/hw/ppc/mvme3100.c
> @@ -0,0 +1,740 @@
> +/*
> + * MVME3100 board emulation
> + *
> + * Copyright (c) 2015 Michael Davidsaver
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2. See
> + * the LICENSE file in the top-level directory.
> + *
> + * This model was developed according to the
> + * MVME3100 Single Board Computer Programmer's Reference
> + * P/N: 6806800G37B
> + * July 2014
> + *
> + * mvme3100-1152
> + * 677MHz core, 256MB ram, 64MB flash
> + * mvme3100-1263
> + * 833MHz core, 512MB ram, 128MB flash
> + *
> + * MOTLoad on mvme3100-1152 says:
> + * MPU-Type =MPC8540
> + * MPU-Int Clock Speed =666MHz
> + * MPU-CCB Clock Speed =333MHz
> + * MPU-DDR Clock Speed =166MHz
> + * MPU-PCI Clock Speed =66MHz, PCI, 64-bit
> + * MPU-Int Cache(L2) Enabled, 256KB, L2CTL =A8000300
> + * Reset/Boot Vector =Flash0
> + * Local Memory Found =10000000 (&268435456)
> + *
> + * MOTLoad on mvme3100-1263 says:
> + * MPU-Type =MPC8540
> + * MPU-Int Clock Speed =833MHz
> + * MPU-CCB Clock Speed =333MHz
> + * MPU-DDR Clock Speed =166MHz
> + * MPU-PCI Clock Speed =66MHz, PCI, 64-bit
> + * MPU-Int Cache(L2) Enabled, 256KB, L2CTL =A8000300
> + * Reset/Boot Vector =Flash0
> + * Local Memory Found =20000000 (&536870912)
> + *
> + * Clock ratios
> + * CCB/PCI -> 5/1
> + * core/CCB -> 2/1 (-1152)
> + * -> 5/2 (-1263)
> + *
> + * The overall memory map is determined by the Local Address Windows.
> + * We do not model the LAWs explicitly.
> + *
> + * MOTLoad configures as follows (a super set of table 1-4)
> + * (MOTLoad RTOS Version 2.0, PAL Version 1.2 RM04)
> + * LAW 0, 7 - disabled
> + * LAW 1 - 0x00000000 -> 0x7fffffff - RAM 2G
> + * LAW 2 - 0x80000000 -> 0xbfffffff - PCI 1G
> + * LAW 3 - 0xc0000000 -> 0xdfffffff - PCI 512MB
> + * LAW 4 - 0xe0000000 -> 0xe0ffffff - PCI 16MB
> + * gap - 0xe1000000 -> 0xbfffffff - CCSR @ 0xe1000000
> + * LAW 5 - 0xe2000000 -> 0xe2ffffff - LBC 16MB
> + * gap - 0xe3000000 -> 0xefffffff
> + * LAW 6 - 0xf0000000 -> 0xffffffff - LBC 256MB
> + *
> + * And validated against the RTEMS 4.9.6 mvme3100 BSP
> + */
> +#include "qemu/osdep.h"
> +#include "qemu/log.h"
> +#include "qapi/error.h"
> +#include "qapi/visitor.h"
> +#include "e500.h"
> +#include "cpu.h"
> +#include "qemu-common.h"
> +#include "cpu-qom.h"
> +#include "sysemu/sysemu.h"
> +#include "sysemu/dma.h"
> +#include "sysemu/block-backend.h"
> +#include "hw/loader.h"
> +#include "hw/pci/pci.h"
> +#include "hw/boards.h"
> +#include "hw/ppc/ppc.h"
> +#include "hw/net/fsl_etsec/etsec.h"
> +#include "sysemu/device_tree.h"
> +#include "sysemu/qtest.h"
> +#include "hw/ppc/openpic.h"
> +#include "qemu/error-report.h"
> +
> +/* Same as prep.c and other PPC boards */
> +#define CFG_ADDR 0xf0000510
> +
> +#define TYPE_MVME3100 MACHINE_TYPE_NAME("mvme3100")
> +#define MVME3100(obj) OBJECT_CHECK(MVME3100State, (obj), TYPE_MVME3100)
> +#define MVME3100_GET_CLASS(obj) \
> + OBJECT_GET_CLASS(MVME3100Class, (obj), TYPE_MVME3100)
> +#define MVME3100_CLASS(klass) \
> + OBJECT_CLASS_CHECK(MVME3100Class, (klass), TYPE_MVME3100)
> +
> +#define E500_TSEC_OFFSET(N) (0x24000 + (N) * 0x1000)
> +
> +/* Complex Core Bus frequency */
> +#define CCB_FREQ (333333333u)
> +
> +typedef struct mvme3100_info {
> + const char *desc;
> + uint32_t cpu_freq;
> + uint32_t porpllsr;
> + uint32_t ram_size;
> +} mvme3100_info;
> +typedef struct MVME3100Class {
> + /*< private >*/
> + MachineClass parent_class;
> + /*< public >*/
> +
> + const mvme3100_info *info;
I'm not seeing a lot of point to having this as a separate structure,
rather then embedding the fields directly in the MVME3100Class.
> +} MVME3100Class;
> +
> +typedef struct MVME3100State {
> + /*< private >*/
> + MachineState parent_obj;
> + /*< public >*/
> +
> + uint32_t load_address,
> + entry_address;
> +
> + MemoryRegion ram;
> +} MVME3100State;
> +
> +
> +/* motload "global environment" variables */
> +static
> +const char *gev[] = {
> + /* TODO: somehow snoop in slirp_instances to pick up IP config? */
> + "mot-/dev/enet0-cipa=10.0.2.15",
> + "mot-/dev/enet0-gipa=10.0.2.2",
> + "mot-/dev/enet0-snma=255.255.255.0",
> + "mot-/dev/enet0-sipa=10.0.2.2",
Right, it does look like these are things that the user might want to
configure. I won't insist on that for an initial merge, though.
> + /* RTEMS specific names for things motload doesn't have */
> + "rtems-dns-server=10.0.2.3",
> + "rtems-client-name=qemu",
> + NULL,
> +};
> +
> +/* Prepare Motorola Vital Product Data eeprom image.
> + * Provided to bootloader for use as a default.
> + *
> + * Begins with constant "MOTLOAD" followed by variable length records
> + * with a two byte header (ID code then body length in bytes).
> + *
> + * | ID | Length | body .... | repeated until ID=0xFF
> + *
> + * ID Codes:
> + * 1 - Product ID (string)
> + * 2 - Assembly # (string)
> + * 3 - Serial # (string)
> + * 5 - CPU Speed (Hz, 4 byte integer + 1 nil)
> + * 6 - Bus Speed (Hz, 4 byte integer + 1 nil)
> + * 8 - Ethernet MAC (6 bytes + 1 nil)
> + * 9 - CPU type
> + * A - VPD CRC (4 bytes)
> + * B - Flash Config (??)
> + * E - L2 Cache Config (??)
> + * F - VPD Version (4 bytes)
> + * 19 - L3 Cache Config (??)
> + * FF - End of VPD (size zero)
> + *
> + * Repeat entries for repeated units. eg. two ID=0x8 for two NICs
> + *
> + * MOTLoad uses the same eeprom to hold it's user configuration
> + * Global Environment Variable (GEV) list.
> + */
> +typedef struct vpdeeprom {
> + char * const base;
> + char *cur;
> + size_t total;
> +} vpdeeprom;
> +
> +static
> +void append_gev_vpd(vpdeeprom *vpd, const char *str)
> +{
> + const size_t remaining = vpd->total - (vpd->cur - vpd->base),
> + len = strlen(str);
Just repeat the const size_t for the second declaration, it'll be
easier to read.
> +
> + if ((len == 0 && remaining < 1)
> + || (remaining < len + 2))
> + {
qemu style puts the { on the same line as the if. Best run your whole
set through checkpatch.pl to catch other style errors.
> + fprintf(stderr, "VPD GEV overflow\n");
Use error_report() please. Or even error_setg() and add an Error **
parmaeter to this function (letting the caller decide whether it
should be fatal or not).
> + return;
> + }
> +
> + memcpy(vpd->cur, str, len + 1);
> +
> + vpd->cur += len + 1;
> +}
> +
> +static
> +void append_vpd(vpdeeprom *vpd, uint8_t id, size_t cnt, const void *val)
> +{
> + const size_t remaining = vpd->total - (vpd->cur - vpd->base);
> +
> + /* must have enough space for this entry and final ID=0xff */
> + if ((id == 0xff && remaining < 2)
> + || (remaining + 4 < cnt || cnt > 255))
Odd bracketing here. || is associative, so the () around the last two
clauses looks redundant.
> + {
> + fprintf(stderr, "VPD overflow\n");
> + return;
> + }
> +
> + vpd->cur[0] = id;
> + vpd->cur[1] = cnt;
> + memcpy(vpd->cur + 2, val, cnt);
> +
> + vpd->cur += 2 + cnt;
> +}
> +
> +static
> +void append_string_vpd(vpdeeprom *vpd, uint8_t id, const char *str)
> +{
> + /* include trailing nil */
> + append_vpd(vpd, id, strlen(str) + 1, str);
> +}
> +
> +static
> +void append_mac_vpd(vpdeeprom *vpd, uint8_t id, const MACAddr *addr)
> +{
> + char buf[7];
> + memcpy(buf, addr->a, 6);
> + buf[6] = 0;
> +
> + append_vpd(vpd, id, 7, buf);
> +}
> +
> +static
> +void append_u32_vpd(vpdeeprom *vpd, uint8_t id, uint32_t val)
> +{
> + union {
> + uint32_t ival;
> + char bytes[5]; /* include trailing nil */
> + } buf;
> + buf.ival = cpu_to_be32(val);
> + buf.bytes[4] = 0;
> +
> + append_vpd(vpd, id, 5, buf.bytes);
> +}
> +
> +static
> +void build_vpd(const mvme3100_info *info, char *buf, size_t cnt,
> + const char *extra)
> +{
> + vpdeeprom vpd = {buf, buf, cnt};
> + size_t i;
> +
> + memset(buf, 0, cnt);
> +
> + strcpy(buf, "MOTOROLA");
> + vpd.cur += 8;
> +
> + /* Product ID (eg. "MVME3100-1152") */
> + append_string_vpd(&vpd, 1, info->desc);
> +
> + /* serial number */
> + append_string_vpd(&vpd, 3, "E0120000");
Giving a fixed serial number seems a bit bogus. Could you derive this
from the qemu instance UUID, maybe?
> + /* CPU Freq. */
> + append_u32_vpd(&vpd, 5, info->cpu_freq);
> +
> + /* PCI Bus Freq. */
> + append_u32_vpd(&vpd, 6, 66666666);
> +
> + for (i = 0; i < MAX_NICS; i++) {
> + if (nd_table[i].used) {
> + append_mac_vpd(&vpd, 8, &nd_table[i].macaddr);
> + }
> + }
> +
> + append_vpd(&vpd, 0xff, 0, NULL);
> +
> + if (vpd.cur - vpd.base > 0x10f8) {
> + fprintf(stderr, "VPD overflows GEV area.\n");
> + return;
> + }
> +
> + /* MOTLOAD's Global Environment Variables
> + * start at offset 0x10f8.
> + * This is a set of nil terminated strings of the form "name=value"
> + * with a zero length string signaling the end.
> + */
> + vpd.cur = vpd.base + 0x10f8;
> +
> + for (i = 0; gev[i]; i++) {
> + append_gev_vpd(&vpd, gev[i]);
> + }
> +
> + if (extra) {
> + char *E = g_strdup(extra);
> + char **opts = g_strsplit(E, " ", 0);
IIRC g_strsplit() is non destructive on the input, so you shouldn't
need the E temporary.
> + size_t i;
> +
> + g_free(E);
> +
> + for (i = 0; opts[i]; i++) {
> + char *opt = g_strstrip(opts[i]);
> + size_t olen = strlen(opt);
> +
> + if (olen == 0) {
> + continue;
> + } else if (!strchr(opt, '=')) {
> + fprintf(stderr, "Missing '=' in -append %s\n", extra);
> + continue;
> + }
> +
> + append_gev_vpd(&vpd, opt);
> + }
> +
> + g_strfreev(opts);
> + }
> +
> + /* zero length string signals end */
> + append_gev_vpd(&vpd, "");
> +}
> +
> +static
> +void set_map(CPUPPCState *env, unsigned way,
> + target_ulong va, hwaddr pa,
> + unsigned size)
> +{
> + ppcmas_tlb_t *tlb = booke206_get_tlbm(env, 1, 0, way);
> +
> + tlb->mas1 = MAS1_VALID | (size << MAS1_TSIZE_SHIFT);
> + tlb->mas2 = (va & TARGET_PAGE_MASK) | MAS2_I | MAS2_G;
> + tlb->mas7_3 = (pa & TARGET_PAGE_MASK) | MAS3_SR | MAS3_SW | MAS3_SX;
> +}
> +
> +static
> +void remap_tlb_bare(CPUPPCState *env)
> +{
> + /* The MPC8540 ref. manual says only the upper 4KB (ROM)
> + * is mapped, but doesn't say exactly how this mapping
> + * is setup. So we arbitrarily decide to use TLB1 entry 0.
> + */
> + set_map(env, 0, 0xfffff000, 0xfffff000, 0x02);
> +
> + env->tlb_dirty = true;
> +}
> +
> +static void mvme3100_cpu_reset(void *opaque)
> +{
> + PowerPCCPU *cpu = opaque;
> + CPUState *cs = CPU(cpu);
> + CPUPPCState *env = &cpu->env;
> +
> + cpu_reset(cs);
> +
> + /* HID0 clock control functions not modeled.
> + * Decrementer always enabled with CCB/8 as reference.
> + * HID0[EMCP] and HID0[TBEN] set
> + */
> + env->spr[SPR_HID0] |= 0x80004000;
> +
> + remap_tlb_bare(&cpu->env);
> + env->nip = 0xfffffffc;
> +}
> +
> +static
> +void mvme3100_pci1_set_irq(void *opaque, int irq_num, int level)
> +{
> + qemu_irq *pic = opaque;
> +
> + qemu_set_irq(pic[irq_num], level);
> +}
> +
> +/* PCI config from a real mvme3100 as configured by motload
> + *
> + * BUS:SLOT:FUN VENDOR-DEV_ID: COMMAND STATUS BASE_ADDR0 BASE_ADDR1
> IRQ_PIN -> IRQ_LINE
> + * 0:0x00:0 0x1057-0x0008: 0x0006 0x20B0 0x80000000 0x00000000 0
> -> 0 (=0x00)
> + * 0:0x11:0 0x10E3-0x0148: 0x0146 0x02B0 0x80100004 0x00000000 1
> -> 0 (=0x00)
> + * 0:0x12:0 0x10B5-0x6520: 0x0147 0x02B0 0x00000000 0x00000000 0
> -> 0 (=0x00)
> + * 0:0x13:0 0x10B5-0x6520: 0x0147 0x02B0 0x00000000 0x00000000 0
> -> 0 (=0x00)
> + * 0:0x14:0 0x8086-0x3200: 0x0145 0x02B0 0x00012001 0x00013001 1
> -> 2 (=0x02)
> + * 2:0x00:0 0x1033-0x0035: 0x0146 0x0210 0x80300000 0x00000000 1
> -> 4 (=0x04)
> + * 2:0x00:1 0x1033-0x0035: 0x0146 0x0210 0x80301000 0x00000000 2
> -> 5 (=0x05)
> + *
> + * The modeled PCI host bridge differs.
> + *
> + * We model one PCI-PCI bridge (0:0x12:0) but with a different vendor/device
> + *
> + * We don't model:
> + * # The SATA controller GD31244 (0x8086-0x3200)
> + * # The USB (OHCI) controller uPD740101 (0x1033-0x0035)
> + * # The second PCI-PCI bridge (0:0x13:0) in front of the USB controllers
> + *
> + * (Note that the SATA controller found on newer boards is different)
> + */
> +
> +static void mvme3100_init(MachineState *machine)
> +{
> + MVME3100State *mvme3100 = MVME3100(machine);
> + const mvme3100_info *info;
> + DeviceState *dev;
> + BusState *i2c;
> + PCIBus *pci0, *pci1;
> + SysBusDevice *cpld, *pic;
> + qemu_irq *pci1_pins = g_malloc_n(4, sizeof(*pci1_pins));
> + FWCfgState *fwinfo;
> + DriveInfo *drvinfo;
> + MemoryRegion *ccsr;
> +
> + {
> + MVME3100Class *klass = MVME3100_GET_CLASS(machine);
> + info = klass->info;
> + }
> +
> + /* Setup CPU */
> +
> + ppce500_init(machine, CCB_FREQ / 8u);
> +
> + memory_region_allocate_system_memory(&mvme3100->ram, NULL,
> + "mvme3100.ram", ram_size);
> + memory_region_add_subregion(get_system_memory(), 0, &mvme3100->ram);
> +
> + qemu_register_reset(mvme3100_cpu_reset, POWERPC_CPU(first_cpu));
> +
> + /* Create CCSR and builtin periphrials */
> + dev = qdev_create(NULL, "e500-ccsr");
> + object_property_add_child(qdev_get_machine(), "e500-ccsr",
> + OBJECT(dev), NULL);
> + qdev_prop_set_uint32(dev, "ccb-freq", CCB_FREQ);
> + qdev_prop_set_uint32(dev, "mpic-model", OPENPIC_MODEL_FSL_MPIC_20);
> + qdev_prop_set_uint32(dev, "porpllsr", info->porpllsr);
> + qdev_prop_set_uint32(dev, "base", 0xff700000ULL);
> + qdev_prop_set_uint32(dev, "ram-size", ram_size);
> + qdev_prop_set_uint32(dev, "pci_first_slot", 0);
> + qdev_prop_set_uint32(dev, "pci_first_pin_irq", 1);
> + qdev_init_nofail(dev);
> +
> + ccsr = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
> +
> + pic = SYS_BUS_DEVICE(object_resolve_path("/machine/pic", NULL));
> +
> + /* Setup mvme3100 specific CPLD device */
> + cpld = SYS_BUS_DEVICE(qdev_create(NULL, "mvme3100-cpld"));
> + object_property_add_child(qdev_get_machine(), "cpld",
> + OBJECT(cpld), &error_fatal);
> + qdev_init_nofail(DEVICE(cpld));
> +
> + memory_region_add_subregion(get_system_memory(),
> + 0xe2000000,
> + sysbus_mmio_get_region(cpld, 0));
> +
> + fwinfo = fw_cfg_init_mem(CFG_ADDR, CFG_ADDR + 2);
> + fw_cfg_add_i16(fwinfo, FW_CFG_NB_CPUS, 1);
> + fw_cfg_add_i16(fwinfo, FW_CFG_MAX_CPUS, 1);
> + fw_cfg_add_i64(fwinfo, FW_CFG_RAM_SIZE, machine->ram_size);
> +
> + dev = DEVICE(object_resolve_path("/machine/pci-host", NULL));
> + assert(dev);
> + pci0 = PCI_BUS(qdev_get_child_bus(dev, "pci.0"));
> + assert(pci0);
> +
> + /* Add expansion PCI bus (2x PMC sites)
> + * "pci-bridge" is not a PLX bridge, but shouldn't matter?
> + */
> + dev = qdev_create(BUS(pci0), "pci-bridge");
> +
> + qdev_prop_set_uint8(dev, "chassis_nr", 1);
> + qdev_prop_set_int32(dev, "addr", PCI_DEVFN(0x12, 0));
> +
> + qdev_init_nofail(dev);
> +
> + pci1 = PCI_BUS(qdev_get_child_bus(dev, "pci.1"));
> + assert(pci1);
> +
> + pci1_pins[0] = qdev_get_gpio_in(DEVICE(pic), 4);
> + pci1_pins[1] = qdev_get_gpio_in(DEVICE(pic), 5);
> + pci1_pins[2] = qdev_get_gpio_in(DEVICE(pic), 6);
> + pci1_pins[3] = qdev_get_gpio_in(DEVICE(pic), 7);
> +
> + pci_bus_irqs(pci1, mvme3100_pci1_set_irq,
> + pci_swizzle_map_irq_fn, pci1_pins, 4);
> +
> + /* the actual PLX bridge doesn't emit interrupts */
> + pci_set_byte(PCI_DEVICE(dev)->config + PCI_INTERRUPT_PIN, 0);
> +
> + /* root bus is only home to soldered devices, and has a
> + * an arbitrary IRQ pin mapping.
> + * Don't allow qdev_device_add() to consider it.
> + */
> + {
> + BusState *bpci0 = BUS(pci0);
> + BusClass *bcls = BUS_GET_CLASS(pci0);
> + assert(bpci0);
I think the BUS() macro will already abort() if pci0 is NULL or not a
BUS.
> + /* bus 0 is thus declared to be full.
> + * as a side-effect, expansion PCI bus limited to 15 devices
> + */
> + bpci0->max_index = bcls->max_dev = 15;
> + }
> +
> + /* I2C Controller */
> + dev = DEVICE(object_resolve_path("/machine/i2c[0]", NULL));
> + assert(dev);
> + sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
> + qdev_get_gpio_in(DEVICE(pic), 16 + 27));
> + i2c = qdev_get_child_bus(dev, "bus");
> + assert(i2c);
> +
> + /* NIC (2x TSEC and 1x FEC) */
> + if (nd_table[0].used) {
> + qemu_check_nic_model(&nd_table[0], "eTSEC");
> +
> + dev = etsec_create(E500_TSEC_OFFSET(0), ccsr, &nd_table[0],
> + qdev_get_gpio_in(DEVICE(pic), 16 + 13),
> + qdev_get_gpio_in(DEVICE(pic), 16 + 14),
> + qdev_get_gpio_in(DEVICE(pic), 16 + 18));
> +
> + } else if (nd_table[1].used) {
> + qemu_check_nic_model(&nd_table[1], "eTSEC");
> +
> + dev = etsec_create(E500_TSEC_OFFSET(1), ccsr, &nd_table[1],
> + qdev_get_gpio_in(DEVICE(pic), 16 + 19),
> + qdev_get_gpio_in(DEVICE(pic), 16 + 20),
> + qdev_get_gpio_in(DEVICE(pic), 16 + 23));
> +
> + } else if (nd_table[2].used) {
> + qemu_log_mask(LOG_UNIMP, "FEC (ethernet #3) not modeled\n");
> + }
> +
> + /* VPD EEPROM */
> + dev = qdev_create(i2c, "at24c-eeprom");
> + object_property_add_child(qdev_get_machine(), "vpd", OBJECT(dev),
> + &error_fatal);
> + qdev_prop_set_uint8(dev, "address", 0xa8 >> 1);
> + qdev_prop_set_uint32(dev, "rom-size", 8192 * 8);
> +
> + drvinfo = drive_get(IF_PFLASH, 0, 0);
> + if (drvinfo) {
> + qdev_prop_set_drive(dev, "drive", blk_by_legacy_dinfo(drvinfo),
> + &error_fatal);
> + }
> +
> + qdev_init_nofail(dev);
> +
> + {
> + char *buf;
> +
> + buf = g_malloc0(8192 * 8);
> +
> + build_vpd(info, buf, 8192 * 8, machine->kernel_cmdline);
> +
> + fw_cfg_add_file(fwinfo, "tomload/vpd", buf, 8192 * 8);
> + }
> +
> + /* DS1375 RTC */
> + dev = qdev_create(i2c, "ds1375");
> + object_property_add_child(qdev_get_machine(), "rtc", OBJECT(dev),
> + &error_fatal);
> + qdev_prop_set_uint8(dev, "address", 0xd0 >> 1);
> + qdev_init_nofail(dev);
> + qdev_connect_gpio_out(dev, 0, qdev_get_gpio_in(DEVICE(pic), 11));
> +
> + /* TODO: unmodeled i2c devices.
> + * 0x90 - ds1621 temperature sensor
> + * 0xa0 - 256*8 byte DDR SPD (???)
> + * 0xa4 - 64k*8 byte eeprom for "user" configuration
> + * 0xa6 - 64k*8 byte eeprom for "user" configuration
> + * 0xaa - 8k*8 byte eeprom for VPD of rear expansion card
> + */
> +
> + if (!bios_name) {
> + bios_name = "tomload.bin";
> + }
> +
> + if (!qtest_enabled()) {
> + MemoryRegion *rom = g_malloc0(sizeof(*rom));
> + char *fullname = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
> +
> + if (!fullname) {
> + fprintf(stderr, "qemu: could not find bios file '%s'\n",
> + bios_name);
> + exit(1);
> + }
> +
> + memory_region_init_ram(rom, OBJECT(cpld), "rom",
> + 0x800000, &error_fatal);
> +
> + memory_region_add_subregion(get_system_memory(),
> + 0xff800000, rom);
> +
> + /* BIOS == image in rom (last 8MB of address space).
> + * Execution starts with the final word 0xfffffffc
> + */
> + int bsize = get_image_size(fullname);
> + if (bsize != 8 * 1024 * 1024 ||
> + -1 == load_image_targphys(fullname,
> + 0xff800000, 8 * 1024 * 1024))
> + {
> + fprintf(stderr, "qemu: could not load bios file '%s'"
> + " (%u bytes, requires 8MB)\n",
> + fullname, (unsigned)bsize);
> + exit(1);
> + }
> +
> + memory_region_set_readonly(rom, true);
> +
> + g_free(fullname);
> + }
> +
> + {
> + hwaddr image_addr = mvme3100->load_address;
> +
> + int image_size = load_image_targphys(machine->kernel_filename,
> + image_addr, 0x01000000);
> + if (machine->kernel_filename &&
> + -1 == image_size)
> + {
> + fprintf(stderr, "qemu: could not load file '%s'\n",
> + machine->kernel_filename);
> + exit(1);
> +
> + } else if (mvme3100->entry_address == 0) {
> + mvme3100->entry_address = image_addr;
> +
> + } else if (mvme3100->entry_address < image_addr
> + || mvme3100->entry_address >= image_addr + image_size)
> + {
> + fprintf(stderr, "qemu: entry-address out of range\n");
> + exit(1);
> + }
> +
> + if (machine->kernel_cmdline) {
> + fw_cfg_add_i32(fwinfo, FW_CFG_CMDLINE_SIZE,
> + strlen(machine->kernel_cmdline) + 1);
> + fw_cfg_add_string(fwinfo, FW_CFG_CMDLINE_DATA,
> + machine->kernel_cmdline);
> + }
> +
> + fw_cfg_add_i32(fwinfo, FW_CFG_KERNEL_ADDR, image_addr);
> + fw_cfg_add_i32(fwinfo, FW_CFG_KERNEL_ENTRY, mvme3100->entry_address);
> + fw_cfg_add_i32(fwinfo, FW_CFG_KERNEL_SIZE, image_size);
> + }
> +}
> +
> +static void mvme3100_inst_init(Object *obj)
> +{
> + MVME3100State *mvme3100 = MVME3100(obj);
> + mvme3100->load_address = 0x10000;
> + mvme3100->entry_address = 0;
> +}
> +
> +static void mvme3100_visit_addr(Object *obj,
> + Visitor *v,
> + const char *name,
> + void *opaque,
> + Error **errp)
> +{
> + MVME3100State *mvme3100 = MVME3100(obj);
> + uint32_t *ptr;
> +
> + if (strcmp(name, "load-address") == 0) {
> + ptr = &mvme3100->load_address;
> + } else if (strcmp(name, "entry-address") == 0) {
> + ptr = &mvme3100->entry_address;
> + } else {
> + fprintf(stderr, "logic error: mvme3100 has no prop '%s'\n", name);
> + exit(1);
> + }
> +
> + visit_type_uint32(v, name, ptr, errp);
> +}
> +
> +static void ppce500_machine_class_init(ObjectClass *klass, void *raw)
> +{
> + mvme3100_info *info = raw;
> + MachineClass *mc = MACHINE_CLASS(klass);
> + MVME3100Class *m3c = MVME3100_CLASS(klass);
> +
> + m3c->info = info;
> +
> + mc->desc = info->desc;
> + mc->init = mvme3100_init;
> + mc->max_cpus = 1;
> + mc->default_ram_size = info->ram_size;
> + mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("mpc8540_v21");
> +
> + object_class_property_add(OBJECT_CLASS(mc), "load-address", "uint32",
> + &mvme3100_visit_addr, &mvme3100_visit_addr,
> NULL,
> + NULL, &error_fatal);
> + object_class_property_add(OBJECT_CLASS(mc), "entry-address", "uint32",
> + &mvme3100_visit_addr, &mvme3100_visit_addr,
> NULL,
> + NULL, &error_fatal);
> +}
> +
> +static const TypeInfo mvme3100_type = {
> + .abstract = true,
> + .name = TYPE_MVME3100,
> + .parent = TYPE_MACHINE,
> + .instance_size = sizeof(MVME3100State),
> + .instance_init = mvme3100_inst_init,
> + .class_size = sizeof(MVME3100Class),
> +};
> +
> +static mvme3100_info mvme3100_1152 = {
> + .desc = "MVME3100-1152",
> + .cpu_freq = 666666666u,
> + /* CCB/PCI -> 5/1
> + * core/CCB -> 2/1
> + *
> + * plat ratio = 5 -> 5:1 CCB:PCI
> + * e500 ratio = 4 -> 4:1 e500:CCB
> + */
> + .porpllsr = 0x0004000a,
> + .ram_size = 256 * (1 << 20),
> +};
> +
> +static const TypeInfo mvme3100_1152_type = {
> + .name = MACHINE_TYPE_NAME("mvme3100-1152"),
> + .parent = TYPE_MVME3100,
> + .class_init = ppce500_machine_class_init,
> + .class_data = &mvme3100_1152,
> +};
> +
> +static mvme3100_info mvme3100_1263 = {
> + .desc = "MVME3100-1263",
> + .cpu_freq = 833333333u,
> + /* CCB/PCI -> 5/1
> + * core/CCB -> 5/2
> + */
> + .porpllsr = 0x0005000a,
> + .ram_size = 512 * (1 << 20),
> +};
> +
> +static const TypeInfo mvme3100_1263_type = {
> + .name = MACHINE_TYPE_NAME("mvme3100-1263"),
> + .parent = TYPE_MVME3100,
> + .class_init = ppce500_machine_class_init,
> + .class_data = &mvme3100_1263,
> +};
> +
> +static void mvme3100_machine_init(void)
> +{
> + type_register_static(&mvme3100_type);
> + type_register_static(&mvme3100_1152_type);
> + type_register_static(&mvme3100_1263_type);
> +}
> +
> +type_init(mvme3100_machine_init)
> diff --git a/hw/ppc/mvme3100_cpld.c b/hw/ppc/mvme3100_cpld.c
> new file mode 100644
> index 0000000000..41024566ce
> --- /dev/null
> +++ b/hw/ppc/mvme3100_cpld.c
> @@ -0,0 +1,192 @@
> +/*
> + * MVME3100 board CPLD (local logic)
> + *
> + * Copyright (c) 2015 Michael Davidsaver
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2. See
> + * the LICENSE file in the top-level directory.
> + *
> + * This model was developed according to the
> + * MVME3100 Single Board Computer Programmer's Reference
> + * P/N: 6806800G37B
> + * July 2014
> + *
> + * And validated against the RTEMS 4.9.6 mvme3100 BSP
> + */
> +#include "qemu/osdep.h"
> +#include "qemu/log.h"
> +#include "qemu/module.h"
> +#include "exec/address-spaces.h"
> +#include "qemu-common.h"
> +#include "sysemu/sysemu.h"
> +#include "hw/sysbus.h"
> +
> +/* #define DEBUG_3100CPLD */
> +
> +#define TYPE_CPLD "mvme3100-cpld"
> +
> +#define CPLD(obj) OBJECT_CHECK(MVMECPLD, (obj), TYPE_CPLD)
> +
> +#ifdef DEBUG_3100CPLD
> +#define DPRINTK(FMT, ...) printf(TYPE_CPLD " : " FMT, ## __VA_ARGS__)
> +#else
> +#define DPRINTK(FMT, ...) do {} while (0)
> +#endif
> +
> +#define LOG(MSK, FMT, ...) qemu_log_mask(MSK, TYPE_CPLD " : " FMT, \
> + ## __VA_ARGS__)
> +
> +#define CPLD_SIZE 0x20
> +
> +typedef struct {
> + SysBusDevice parent_obj;
> +
> + uint8_t mem[0x10];
> + uint32_t test;
> +
> + MemoryRegion mmio;
> +} MVMECPLD;
> +
> +static
> +uint64_t cpld_read(void *opaque, hwaddr addr, unsigned size)
> +{
> + MVMECPLD *self = opaque;
> + uint32_t offset = addr;
> + uint32_t val, A;
> +
> + switch (offset) {
> + case 1 ... 0xf:
> + val = 0;
> + A = offset;
> + while (size--) {
> + val <<= 8;
> + val |= self->mem[A++];
> + }
> + break;
> + case 0x10:
> + val = self->test;
> + break;
> + case 0x14:
> + val = ~self->test;
> + break;
> + default:
> + LOG(LOG_UNIMP, "read from unimplimented register %08x\n",
> + (unsigned)offset);
> + val = 0;
> + }
> +
> + DPRINTK("read %08x -> %08x\n", (unsigned)offset, (unsigned)val);
> +
> + return val;
> +}
> +
> +static
> +void cpld_write(void *opaque, hwaddr addr, uint64_t val, unsigned size)
> +{
> + MVMECPLD *self = opaque;
> + uint32_t offset = addr;
> +
> + DPRINTK("write %08x <- %08x\n", (unsigned)offset, (unsigned)val);
> +
> + switch (offset) {
> + case 0:
> + break;
> + case 1:
> + /* TODO: TSTAT_MASK and EEPROM_WPEEPROM */
> + if ((val & 0xe0) == 0xa0) {
> + qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
> + }
> + self->mem[offset >> 2] = val & 0x3;
> + break;
> + case 2:
> + self->mem[offset >> 2] = val & 0xf;
> + break;
> + case 3:
> + self->mem[offset >> 2] = val & 0x18;
> + break;
> + case 4 ... 9:
> + break;
> + case 10 ... 13:
> + /* TODO: allow date to be changed? */
> + break;
> + case 0x10:
> + self->test = val;
> + break;
> + case 0x11:
> + self->test = ~val;
> + break;
> + default:
> + LOG(LOG_UNIMP, "write to unimplimented register %08x\n",
> + (unsigned)offset);
> + break;
> + }
> +}
> +
> +static const MemoryRegionOps cpld_ops = {
> + .read = cpld_read,
> + .write = cpld_write,
> + .endianness = DEVICE_NATIVE_ENDIAN,
> +};
> +static
> +void mvme3100_cpld_realize(DeviceState *dev, Error **errp)
> +{
> + MVMECPLD *self = CPLD(dev);
> +
> + memory_region_init_io(&self->mmio, OBJECT(self), &cpld_ops, self,
> + TYPE_CPLD, CPLD_SIZE);
> +
> + sysbus_init_mmio(&self->parent_obj, &self->mmio);
> +}
> +
> +static Property mvme3100_cpld_props[] = {
> + DEFINE_PROP_END_OF_LIST()
> +};
> +
> +static
> +void mvme3100_cpld_reset(DeviceState *dev)
> +{
> + MVMECPLD *self = CPLD(dev);
> +
> + self->mem[0] = 0; /* Type VME SBC, SAFE_START==0 */
> + self->mem[1] = 3;
> + self->mem[2] = 1;
> + self->mem[3] = 9;
> + self->mem[4] = 9;
> + self->mem[5] = 0xa9;
> + self->mem[6] = 1;
> + self->mem[7] = 0xe0; /* TODO, TSEC phy irq status */
> + self->mem[8] = 1; /* TODO: PMC presence ...? */
> + self->mem[9] = 1; /* TODO: real rev. # */
> + self->mem[10] = 15; /* TODO: real date code */
> + self->mem[11] = 11;
> + self->mem[12] = 14;
> + self->mem[13] = 1;
> + self->test = 0;
> +}
> +
> +static
> +void mvme3100_class_init(ObjectClass *klass, void *data)
> +{
> + DeviceClass *dc = DEVICE_CLASS(klass);
> +
> + dc->realize = &mvme3100_cpld_realize;
> + dc->reset = &mvme3100_cpld_reset;
> + dc->desc = "mvme3100 CPLD logic";
> + dc->props = mvme3100_cpld_props;
> +}
> +
> +static const TypeInfo mvme3100_cpld_info = {
> + .name = TYPE_CPLD,
> + .parent = TYPE_SYS_BUS_DEVICE,
> + .instance_size = sizeof(MVMECPLD),
> + .class_size = sizeof(SysBusDeviceClass),
> + .class_init = mvme3100_class_init,
> +};
> +
> +static
> +void mvme3100_cpld_register(void)
> +{
> + type_register_static(&mvme3100_cpld_info);
> +}
> +
> +type_init(mvme3100_cpld_register)
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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