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qemu-e2k/hw/mips/boston.c

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/*
* MIPS Boston development board emulation.
*
* Copyright (c) 2016 Imagination Technologies
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "exec/address-spaces.h"
#include "hw/boards.h"
#include "hw/char/serial.h"
#include "hw/hw.h"
#include "hw/ide/pci.h"
#include "hw/ide/ahci.h"
#include "hw/loader.h"
#include "hw/loader-fit.h"
#include "hw/mips/cps.h"
#include "hw/mips/cpudevs.h"
#include "hw/pci-host/xilinx-pcie.h"
#include "qapi/error.h"
#include "qemu/cutils.h"
#include "qemu/error-report.h"
#include "qemu/log.h"
#include "chardev/char.h"
#include "sysemu/device_tree.h"
#include "sysemu/sysemu.h"
#include "sysemu/qtest.h"
#include <libfdt.h>
#define TYPE_MIPS_BOSTON "mips-boston"
#define BOSTON(obj) OBJECT_CHECK(BostonState, (obj), TYPE_MIPS_BOSTON)
typedef struct {
SysBusDevice parent_obj;
MachineState *mach;
MIPSCPSState *cps;
SerialState *uart;
CharBackend lcd_display;
char lcd_content[8];
bool lcd_inited;
hwaddr kernel_entry;
hwaddr fdt_base;
} BostonState;
enum boston_plat_reg {
PLAT_FPGA_BUILD = 0x00,
PLAT_CORE_CL = 0x04,
PLAT_WRAPPER_CL = 0x08,
PLAT_SYSCLK_STATUS = 0x0c,
PLAT_SOFTRST_CTL = 0x10,
#define PLAT_SOFTRST_CTL_SYSRESET (1 << 4)
PLAT_DDR3_STATUS = 0x14,
#define PLAT_DDR3_STATUS_LOCKED (1 << 0)
#define PLAT_DDR3_STATUS_CALIBRATED (1 << 2)
PLAT_PCIE_STATUS = 0x18,
#define PLAT_PCIE_STATUS_PCIE0_LOCKED (1 << 0)
#define PLAT_PCIE_STATUS_PCIE1_LOCKED (1 << 8)
#define PLAT_PCIE_STATUS_PCIE2_LOCKED (1 << 16)
PLAT_FLASH_CTL = 0x1c,
PLAT_SPARE0 = 0x20,
PLAT_SPARE1 = 0x24,
PLAT_SPARE2 = 0x28,
PLAT_SPARE3 = 0x2c,
PLAT_MMCM_DIV = 0x30,
#define PLAT_MMCM_DIV_CLK0DIV_SHIFT 0
#define PLAT_MMCM_DIV_INPUT_SHIFT 8
#define PLAT_MMCM_DIV_MUL_SHIFT 16
#define PLAT_MMCM_DIV_CLK1DIV_SHIFT 24
PLAT_BUILD_CFG = 0x34,
#define PLAT_BUILD_CFG_IOCU_EN (1 << 0)
#define PLAT_BUILD_CFG_PCIE0_EN (1 << 1)
#define PLAT_BUILD_CFG_PCIE1_EN (1 << 2)
#define PLAT_BUILD_CFG_PCIE2_EN (1 << 3)
PLAT_DDR_CFG = 0x38,
#define PLAT_DDR_CFG_SIZE (0xf << 0)
#define PLAT_DDR_CFG_MHZ (0xfff << 4)
PLAT_NOC_PCIE0_ADDR = 0x3c,
PLAT_NOC_PCIE1_ADDR = 0x40,
PLAT_NOC_PCIE2_ADDR = 0x44,
PLAT_SYS_CTL = 0x48,
};
static void boston_lcd_event(void *opaque, int event)
{
BostonState *s = opaque;
if (event == CHR_EVENT_OPENED && !s->lcd_inited) {
qemu_chr_fe_printf(&s->lcd_display, " ");
s->lcd_inited = true;
}
}
static uint64_t boston_lcd_read(void *opaque, hwaddr addr,
unsigned size)
{
BostonState *s = opaque;
uint64_t val = 0;
switch (size) {
case 8:
val |= (uint64_t)s->lcd_content[(addr + 7) & 0x7] << 56;
val |= (uint64_t)s->lcd_content[(addr + 6) & 0x7] << 48;
val |= (uint64_t)s->lcd_content[(addr + 5) & 0x7] << 40;
val |= (uint64_t)s->lcd_content[(addr + 4) & 0x7] << 32;
/* fall through */
case 4:
val |= (uint64_t)s->lcd_content[(addr + 3) & 0x7] << 24;
val |= (uint64_t)s->lcd_content[(addr + 2) & 0x7] << 16;
/* fall through */
case 2:
val |= (uint64_t)s->lcd_content[(addr + 1) & 0x7] << 8;
/* fall through */
case 1:
val |= (uint64_t)s->lcd_content[(addr + 0) & 0x7];
break;
}
return val;
}
static void boston_lcd_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
BostonState *s = opaque;
switch (size) {
case 8:
s->lcd_content[(addr + 7) & 0x7] = val >> 56;
s->lcd_content[(addr + 6) & 0x7] = val >> 48;
s->lcd_content[(addr + 5) & 0x7] = val >> 40;
s->lcd_content[(addr + 4) & 0x7] = val >> 32;
/* fall through */
case 4:
s->lcd_content[(addr + 3) & 0x7] = val >> 24;
s->lcd_content[(addr + 2) & 0x7] = val >> 16;
/* fall through */
case 2:
s->lcd_content[(addr + 1) & 0x7] = val >> 8;
/* fall through */
case 1:
s->lcd_content[(addr + 0) & 0x7] = val;
break;
}
qemu_chr_fe_printf(&s->lcd_display,
"\r%-8.8s", s->lcd_content);
}
static const MemoryRegionOps boston_lcd_ops = {
.read = boston_lcd_read,
.write = boston_lcd_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static uint64_t boston_platreg_read(void *opaque, hwaddr addr,
unsigned size)
{
BostonState *s = opaque;
uint32_t gic_freq, val;
if (size != 4) {
qemu_log_mask(LOG_UNIMP, "%uB platform register read", size);
return 0;
}
switch (addr & 0xffff) {
case PLAT_FPGA_BUILD:
case PLAT_CORE_CL:
case PLAT_WRAPPER_CL:
return 0;
case PLAT_DDR3_STATUS:
return PLAT_DDR3_STATUS_LOCKED | PLAT_DDR3_STATUS_CALIBRATED;
case PLAT_MMCM_DIV:
gic_freq = mips_gictimer_get_freq(s->cps->gic.gic_timer) / 1000000;
val = gic_freq << PLAT_MMCM_DIV_INPUT_SHIFT;
val |= 1 << PLAT_MMCM_DIV_MUL_SHIFT;
val |= 1 << PLAT_MMCM_DIV_CLK0DIV_SHIFT;
val |= 1 << PLAT_MMCM_DIV_CLK1DIV_SHIFT;
return val;
case PLAT_BUILD_CFG:
val = PLAT_BUILD_CFG_PCIE0_EN;
val |= PLAT_BUILD_CFG_PCIE1_EN;
val |= PLAT_BUILD_CFG_PCIE2_EN;
return val;
case PLAT_DDR_CFG:
val = s->mach->ram_size / G_BYTE;
assert(!(val & ~PLAT_DDR_CFG_SIZE));
val |= PLAT_DDR_CFG_MHZ;
return val;
default:
qemu_log_mask(LOG_UNIMP, "Read platform register 0x%" HWADDR_PRIx,
addr & 0xffff);
return 0;
}
}
static void boston_platreg_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
if (size != 4) {
qemu_log_mask(LOG_UNIMP, "%uB platform register write", size);
return;
}
switch (addr & 0xffff) {
case PLAT_FPGA_BUILD:
case PLAT_CORE_CL:
case PLAT_WRAPPER_CL:
case PLAT_DDR3_STATUS:
case PLAT_PCIE_STATUS:
case PLAT_MMCM_DIV:
case PLAT_BUILD_CFG:
case PLAT_DDR_CFG:
/* read only */
break;
case PLAT_SOFTRST_CTL:
if (val & PLAT_SOFTRST_CTL_SYSRESET) {
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
}
break;
default:
qemu_log_mask(LOG_UNIMP, "Write platform register 0x%" HWADDR_PRIx
" = 0x%" PRIx64, addr & 0xffff, val);
break;
}
}
static const MemoryRegionOps boston_platreg_ops = {
.read = boston_platreg_read,
.write = boston_platreg_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void boston_flash_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
}
static const MemoryRegionOps boston_flash_ops = {
.write = boston_flash_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static const TypeInfo boston_device = {
.name = TYPE_MIPS_BOSTON,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(BostonState),
};
static void boston_register_types(void)
{
type_register_static(&boston_device);
}
type_init(boston_register_types)
static void gen_firmware(uint32_t *p, hwaddr kernel_entry, hwaddr fdt_addr,
bool is_64b)
{
const uint32_t cm_base = 0x16100000;
const uint32_t gic_base = 0x16120000;
const uint32_t cpc_base = 0x16200000;
/* Move CM GCRs */
if (is_64b) {
stl_p(p++, 0x40287803); /* dmfc0 $8, CMGCRBase */
stl_p(p++, 0x00084138); /* dsll $8, $8, 4 */
} else {
stl_p(p++, 0x40087803); /* mfc0 $8, CMGCRBase */
stl_p(p++, 0x00084100); /* sll $8, $8, 4 */
}
stl_p(p++, 0x3c09a000); /* lui $9, 0xa000 */
stl_p(p++, 0x01094025); /* or $8, $9 */
stl_p(p++, 0x3c0a0000 | (cm_base >> 16)); /* lui $10, cm_base >> 16 */
if (is_64b) {
stl_p(p++, 0xfd0a0008); /* sd $10, 0x8($8) */
} else {
stl_p(p++, 0xad0a0008); /* sw $10, 0x8($8) */
}
stl_p(p++, 0x012a4025); /* or $8, $10 */
/* Move & enable GIC GCRs */
stl_p(p++, 0x3c090000 | (gic_base >> 16)); /* lui $9, gic_base >> 16 */
stl_p(p++, 0x35290001); /* ori $9, 0x1 */
if (is_64b) {
stl_p(p++, 0xfd090080); /* sd $9, 0x80($8) */
} else {
stl_p(p++, 0xad090080); /* sw $9, 0x80($8) */
}
/* Move & enable CPC GCRs */
stl_p(p++, 0x3c090000 | (cpc_base >> 16)); /* lui $9, cpc_base >> 16 */
stl_p(p++, 0x35290001); /* ori $9, 0x1 */
if (is_64b) {
stl_p(p++, 0xfd090088); /* sd $9, 0x88($8) */
} else {
stl_p(p++, 0xad090088); /* sw $9, 0x88($8) */
}
/*
* Setup argument registers to follow the UHI boot protocol:
*
* a0/$4 = -2
* a1/$5 = virtual address of FDT
* a2/$6 = 0
* a3/$7 = 0
*/
stl_p(p++, 0x2404fffe); /* li $4, -2 */
/* lui $5, hi(fdt_addr) */
stl_p(p++, 0x3c050000 | ((fdt_addr >> 16) & 0xffff));
if (fdt_addr & 0xffff) { /* ori $5, lo(fdt_addr) */
stl_p(p++, 0x34a50000 | (fdt_addr & 0xffff));
}
stl_p(p++, 0x34060000); /* li $6, 0 */
stl_p(p++, 0x34070000); /* li $7, 0 */
/* Load kernel entry address & jump to it */
/* lui $25, hi(kernel_entry) */
stl_p(p++, 0x3c190000 | ((kernel_entry >> 16) & 0xffff));
/* ori $25, lo(kernel_entry) */
stl_p(p++, 0x37390000 | (kernel_entry & 0xffff));
stl_p(p++, 0x03200009); /* jr $25 */
}
static const void *boston_fdt_filter(void *opaque, const void *fdt_orig,
const void *match_data, hwaddr *load_addr)
{
BostonState *s = BOSTON(opaque);
MachineState *machine = s->mach;
const char *cmdline;
int err;
void *fdt;
size_t fdt_sz, ram_low_sz, ram_high_sz;
fdt_sz = fdt_totalsize(fdt_orig) * 2;
fdt = g_malloc0(fdt_sz);
err = fdt_open_into(fdt_orig, fdt, fdt_sz);
if (err) {
fprintf(stderr, "unable to open FDT\n");
return NULL;
}
cmdline = (machine->kernel_cmdline && machine->kernel_cmdline[0])
? machine->kernel_cmdline : " ";
err = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
if (err < 0) {
fprintf(stderr, "couldn't set /chosen/bootargs\n");
return NULL;
}
ram_low_sz = MIN(256 * M_BYTE, machine->ram_size);
ram_high_sz = machine->ram_size - ram_low_sz;
qemu_fdt_setprop_sized_cells(fdt, "/memory@0", "reg",
1, 0x00000000, 1, ram_low_sz,
1, 0x90000000, 1, ram_high_sz);
fdt = g_realloc(fdt, fdt_totalsize(fdt));
qemu_fdt_dumpdtb(fdt, fdt_sz);
s->fdt_base = *load_addr;
return fdt;
}
static const void *boston_kernel_filter(void *opaque, const void *kernel,
hwaddr *load_addr, hwaddr *entry_addr)
{
BostonState *s = BOSTON(opaque);
s->kernel_entry = *entry_addr;
return kernel;
}
static const struct fit_loader_match boston_matches[] = {
{ "img,boston" },
{ NULL },
};
static const struct fit_loader boston_fit_loader = {
.matches = boston_matches,
.addr_to_phys = cpu_mips_kseg0_to_phys,
.fdt_filter = boston_fdt_filter,
.kernel_filter = boston_kernel_filter,
};
static inline XilinxPCIEHost *
xilinx_pcie_init(MemoryRegion *sys_mem, uint32_t bus_nr,
hwaddr cfg_base, uint64_t cfg_size,
hwaddr mmio_base, uint64_t mmio_size,
qemu_irq irq, bool link_up)
{
DeviceState *dev;
MemoryRegion *cfg, *mmio;
dev = qdev_create(NULL, TYPE_XILINX_PCIE_HOST);
qdev_prop_set_uint32(dev, "bus_nr", bus_nr);
qdev_prop_set_uint64(dev, "cfg_base", cfg_base);
qdev_prop_set_uint64(dev, "cfg_size", cfg_size);
qdev_prop_set_uint64(dev, "mmio_base", mmio_base);
qdev_prop_set_uint64(dev, "mmio_size", mmio_size);
qdev_prop_set_bit(dev, "link_up", link_up);
qdev_init_nofail(dev);
cfg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
memory_region_add_subregion_overlap(sys_mem, cfg_base, cfg, 0);
mmio = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1);
memory_region_add_subregion_overlap(sys_mem, 0, mmio, 0);
qdev_connect_gpio_out_named(dev, "interrupt_out", 0, irq);
return XILINX_PCIE_HOST(dev);
}
static void boston_mach_init(MachineState *machine)
{
DeviceState *dev;
BostonState *s;
Error *err = NULL;
const char *cpu_model;
MemoryRegion *flash, *ddr, *ddr_low_alias, *lcd, *platreg;
MemoryRegion *sys_mem = get_system_memory();
XilinxPCIEHost *pcie2;
PCIDevice *ahci;
DriveInfo *hd[6];
Chardev *chr;
int fw_size, fit_err;
bool is_64b;
if ((machine->ram_size % G_BYTE) ||
(machine->ram_size > (2 * G_BYTE))) {
error_report("Memory size must be 1GB or 2GB");
exit(1);
}
cpu_model = machine->cpu_model ?: "I6400";
dev = qdev_create(NULL, TYPE_MIPS_BOSTON);
qdev_init_nofail(dev);
s = BOSTON(dev);
s->mach = machine;
s->cps = g_new0(MIPSCPSState, 1);
if (!cpu_supports_cps_smp(cpu_model)) {
error_report("Boston requires CPUs which support CPS");
exit(1);
}
is_64b = cpu_supports_isa(cpu_model, ISA_MIPS64);
object_initialize(s->cps, sizeof(MIPSCPSState), TYPE_MIPS_CPS);
qdev_set_parent_bus(DEVICE(s->cps), sysbus_get_default());
object_property_set_str(OBJECT(s->cps), cpu_model, "cpu-model", &err);
object_property_set_int(OBJECT(s->cps), smp_cpus, "num-vp", &err);
object_property_set_bool(OBJECT(s->cps), true, "realized", &err);
if (err != NULL) {
error_report("%s", error_get_pretty(err));
exit(1);
}
sysbus_mmio_map_overlap(SYS_BUS_DEVICE(s->cps), 0, 0, 1);
flash = g_new(MemoryRegion, 1);
memory_region_init_rom_device_nomigrate(flash, NULL, &boston_flash_ops, s,
"boston.flash", 128 * M_BYTE, &err);
memory_region_add_subregion_overlap(sys_mem, 0x18000000, flash, 0);
ddr = g_new(MemoryRegion, 1);
memory_region_allocate_system_memory(ddr, NULL, "boston.ddr",
machine->ram_size);
memory_region_add_subregion_overlap(sys_mem, 0x80000000, ddr, 0);
ddr_low_alias = g_new(MemoryRegion, 1);
memory_region_init_alias(ddr_low_alias, NULL, "boston_low.ddr",
ddr, 0, MIN(machine->ram_size, (256 * M_BYTE)));
memory_region_add_subregion_overlap(sys_mem, 0, ddr_low_alias, 0);
xilinx_pcie_init(sys_mem, 0,
0x10000000, 32 * M_BYTE,
0x40000000, 1 * G_BYTE,
get_cps_irq(s->cps, 2), false);
xilinx_pcie_init(sys_mem, 1,
0x12000000, 32 * M_BYTE,
0x20000000, 512 * M_BYTE,
get_cps_irq(s->cps, 1), false);
pcie2 = xilinx_pcie_init(sys_mem, 2,
0x14000000, 32 * M_BYTE,
0x16000000, 1 * M_BYTE,
get_cps_irq(s->cps, 0), true);
platreg = g_new(MemoryRegion, 1);
memory_region_init_io(platreg, NULL, &boston_platreg_ops, s,
"boston-platregs", 0x1000);
memory_region_add_subregion_overlap(sys_mem, 0x17ffd000, platreg, 0);
if (!serial_hds[0]) {
serial_hds[0] = qemu_chr_new("serial0", "null");
}
s->uart = serial_mm_init(sys_mem, 0x17ffe000, 2,
get_cps_irq(s->cps, 3), 10000000,
serial_hds[0], DEVICE_NATIVE_ENDIAN);
lcd = g_new(MemoryRegion, 1);
memory_region_init_io(lcd, NULL, &boston_lcd_ops, s, "boston-lcd", 0x8);
memory_region_add_subregion_overlap(sys_mem, 0x17fff000, lcd, 0);
chr = qemu_chr_new("lcd", "vc:320x240");
qemu_chr_fe_init(&s->lcd_display, chr, NULL);
qemu_chr_fe_set_handlers(&s->lcd_display, NULL, NULL,
boston_lcd_event, NULL, s, NULL, true);
ahci = pci_create_simple_multifunction(&PCI_BRIDGE(&pcie2->root)->sec_bus,
PCI_DEVFN(0, 0),
true, TYPE_ICH9_AHCI);
g_assert(ARRAY_SIZE(hd) == ahci_get_num_ports(ahci));
ide_drive_get(hd, ahci_get_num_ports(ahci));
ahci_ide_create_devs(ahci, hd);
if (machine->firmware) {
fw_size = load_image_targphys(machine->firmware,
0x1fc00000, 4 * M_BYTE);
if (fw_size == -1) {
error_printf("unable to load firmware image '%s'\n",
machine->firmware);
exit(1);
}
} else if (machine->kernel_filename) {
fit_err = load_fit(&boston_fit_loader, machine->kernel_filename, s);
if (fit_err) {
error_printf("unable to load FIT image\n");
exit(1);
}
gen_firmware(memory_region_get_ram_ptr(flash) + 0x7c00000,
s->kernel_entry, s->fdt_base, is_64b);
} else if (!qtest_enabled()) {
error_printf("Please provide either a -kernel or -bios argument\n");
exit(1);
}
}
static void boston_mach_class_init(MachineClass *mc)
{
mc->desc = "MIPS Boston";
mc->init = boston_mach_init;
mc->block_default_type = IF_IDE;
mc->default_ram_size = 1 * G_BYTE;
mc->max_cpus = 16;
}
DEFINE_MACHINE("boston", boston_mach_class_init)
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