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qemu/hw/ppc/ppc405_boards.c
Cédric Le Goater b42ad43756 ppc/ppc405: QOM'ify CPU 
Drop the use of ppc4xx_init() and duplicate a bit of code related to
clocks in the SoC realize routine. We will clean that up in the
following patches.

ppc_dcr_init() simply allocates default DCR handlers for the CPU. Maybe
this could be done in model initializer of the CPU families needing it.

Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <20220809153904.485018-8-clg@kaod.org>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2022-08-31 14:08:06 -03:00

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/*
* QEMU PowerPC 405 evaluation boards emulation
*
* Copyright (c) 2007 Jocelyn Mayer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qemu/units.h"
#include "qapi/error.h"
#include "qemu/datadir.h"
#include "cpu.h"
#include "hw/ppc/ppc.h"
#include "hw/qdev-properties.h"
#include "hw/sysbus.h"
#include "ppc405.h"
#include "hw/rtc/m48t59.h"
#include "hw/block/flash.h"
#include "sysemu/qtest.h"
#include "sysemu/reset.h"
#include "sysemu/block-backend.h"
#include "hw/boards.h"
#include "qemu/error-report.h"
#include "hw/loader.h"
#include "qemu/cutils.h"
#include "elf.h"
#define BIOS_FILENAME "ppc405_rom.bin"
#define BIOS_SIZE (2 * MiB)
#define KERNEL_LOAD_ADDR 0x01000000
#define INITRD_LOAD_ADDR 0x01800000
#define USE_FLASH_BIOS
#define TYPE_PPC405_MACHINE MACHINE_TYPE_NAME("ppc405")
OBJECT_DECLARE_SIMPLE_TYPE(Ppc405MachineState, PPC405_MACHINE);
struct Ppc405MachineState {
/* Private */
MachineState parent_obj;
/* Public */
Ppc405SoCState soc;
};
/*****************************************************************************/
/* PPC405EP reference board (IBM) */
/* Standalone board with:
* - PowerPC 405EP CPU
* - SDRAM (0x00000000)
* - Flash (0xFFF80000)
* - SRAM (0xFFF00000)
* - NVRAM (0xF0000000)
* - FPGA (0xF0300000)
*/
typedef struct ref405ep_fpga_t ref405ep_fpga_t;
struct ref405ep_fpga_t {
uint8_t reg0;
uint8_t reg1;
};
static uint64_t ref405ep_fpga_readb(void *opaque, hwaddr addr, unsigned size)
{
ref405ep_fpga_t *fpga;
uint32_t ret;
fpga = opaque;
switch (addr) {
case 0x0:
ret = fpga->reg0;
break;
case 0x1:
ret = fpga->reg1;
break;
default:
ret = 0;
break;
}
return ret;
}
static void ref405ep_fpga_writeb(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
ref405ep_fpga_t *fpga;
fpga = opaque;
switch (addr) {
case 0x0:
/* Read only */
break;
case 0x1:
fpga->reg1 = value;
break;
default:
break;
}
}
static const MemoryRegionOps ref405ep_fpga_ops = {
.read = ref405ep_fpga_readb,
.write = ref405ep_fpga_writeb,
.impl.min_access_size = 1,
.impl.max_access_size = 1,
.valid.min_access_size = 1,
.valid.max_access_size = 4,
.endianness = DEVICE_BIG_ENDIAN,
};
static void ref405ep_fpga_reset (void *opaque)
{
ref405ep_fpga_t *fpga;
fpga = opaque;
fpga->reg0 = 0x00;
fpga->reg1 = 0x0F;
}
static void ref405ep_fpga_init(MemoryRegion *sysmem, uint32_t base)
{
ref405ep_fpga_t *fpga;
MemoryRegion *fpga_memory = g_new(MemoryRegion, 1);
fpga = g_new0(ref405ep_fpga_t, 1);
memory_region_init_io(fpga_memory, NULL, &ref405ep_fpga_ops, fpga,
"fpga", 0x00000100);
memory_region_add_subregion(sysmem, base, fpga_memory);
qemu_register_reset(&ref405ep_fpga_reset, fpga);
}
/*
* CPU reset handler when booting directly from a loaded kernel
*/
static struct boot_info {
uint32_t entry;
uint32_t bdloc;
uint32_t initrd_base;
uint32_t initrd_size;
uint32_t cmdline_base;
uint32_t cmdline_size;
} boot_info;
static void main_cpu_reset(void *opaque)
{
PowerPCCPU *cpu = opaque;
CPUPPCState *env = &cpu->env;
struct boot_info *bi = env->load_info;
cpu_reset(CPU(cpu));
/* stack: top of sram */
env->gpr[1] = PPC405EP_SRAM_BASE + PPC405EP_SRAM_SIZE - 8;
/* Tune our boot state */
env->gpr[3] = bi->bdloc;
env->gpr[4] = bi->initrd_base;
env->gpr[5] = bi->initrd_base + bi->initrd_size;
env->gpr[6] = bi->cmdline_base;
env->gpr[7] = bi->cmdline_size;
env->nip = bi->entry;
}
static void boot_from_kernel(MachineState *machine, PowerPCCPU *cpu)
{
CPUPPCState *env = &cpu->env;
hwaddr boot_entry;
hwaddr kernel_base;
int kernel_size;
hwaddr initrd_base;
int initrd_size;
ram_addr_t bdloc;
int len;
bdloc = ppc405_set_bootinfo(env, machine->ram_size);
boot_info.bdloc = bdloc;
kernel_size = load_elf(machine->kernel_filename, NULL, NULL, NULL,
&boot_entry, &kernel_base, NULL, NULL,
1, PPC_ELF_MACHINE, 0, 0);
if (kernel_size < 0) {
error_report("Could not load kernel '%s' : %s",
machine->kernel_filename, load_elf_strerror(kernel_size));
exit(1);
}
boot_info.entry = boot_entry;
/* load initrd */
if (machine->initrd_filename) {
initrd_base = INITRD_LOAD_ADDR;
initrd_size = load_image_targphys(machine->initrd_filename, initrd_base,
machine->ram_size - initrd_base);
if (initrd_size < 0) {
error_report("could not load initial ram disk '%s'",
machine->initrd_filename);
exit(1);
}
boot_info.initrd_base = initrd_base;
boot_info.initrd_size = initrd_size;
}
if (machine->kernel_cmdline) {
len = strlen(machine->kernel_cmdline);
bdloc -= ((len + 255) & ~255);
cpu_physical_memory_write(bdloc, machine->kernel_cmdline, len + 1);
boot_info.cmdline_base = bdloc;
boot_info.cmdline_size = bdloc + len;
}
/* Install our custom reset handler to start from Linux */
qemu_register_reset(main_cpu_reset, cpu);
env->load_info = &boot_info;
}
static void ppc405_init(MachineState *machine)
{
Ppc405MachineState *ppc405 = PPC405_MACHINE(machine);
MachineClass *mc = MACHINE_GET_CLASS(machine);
const char *kernel_filename = machine->kernel_filename;
MemoryRegion *sysmem = get_system_memory();
if (machine->ram_size != mc->default_ram_size) {
char *sz = size_to_str(mc->default_ram_size);
error_report("Invalid RAM size, should be %s", sz);
g_free(sz);
exit(EXIT_FAILURE);
}
object_initialize_child(OBJECT(machine), "soc", &ppc405->soc,
TYPE_PPC405_SOC);
object_property_set_uint(OBJECT(&ppc405->soc), "ram-size",
machine->ram_size, &error_fatal);
object_property_set_link(OBJECT(&ppc405->soc), "dram",
OBJECT(machine->ram), &error_abort);
object_property_set_bool(OBJECT(&ppc405->soc), "dram-init",
kernel_filename != NULL, &error_abort);
object_property_set_uint(OBJECT(&ppc405->soc), "sys-clk", 33333333,
&error_abort);
qdev_realize(DEVICE(&ppc405->soc), NULL, &error_fatal);
/* allocate and load BIOS */
if (machine->firmware) {
MemoryRegion *bios = g_new(MemoryRegion, 1);
g_autofree char *filename = qemu_find_file(QEMU_FILE_TYPE_BIOS,
machine->firmware);
long bios_size;
memory_region_init_rom(bios, NULL, "ef405ep.bios", BIOS_SIZE,
&error_fatal);
if (!filename) {
error_report("Could not find firmware '%s'", machine->firmware);
exit(1);
}
bios_size = load_image_size(filename,
memory_region_get_ram_ptr(bios),
BIOS_SIZE);
if (bios_size < 0) {
error_report("Could not load PowerPC BIOS '%s'", machine->firmware);
exit(1);
}
bios_size = (bios_size + 0xfff) & ~0xfff;
memory_region_add_subregion(sysmem, (uint32_t)(-bios_size), bios);
}
/* Load kernel and initrd using U-Boot images */
if (kernel_filename && machine->firmware) {
target_ulong kernel_base, initrd_base;
long kernel_size, initrd_size;
kernel_base = KERNEL_LOAD_ADDR;
kernel_size = load_image_targphys(kernel_filename, kernel_base,
machine->ram_size - kernel_base);
if (kernel_size < 0) {
error_report("could not load kernel '%s'", kernel_filename);
exit(1);
}
/* load initrd */
if (machine->initrd_filename) {
initrd_base = INITRD_LOAD_ADDR;
initrd_size = load_image_targphys(machine->initrd_filename,
initrd_base,
machine->ram_size - initrd_base);
if (initrd_size < 0) {
error_report("could not load initial ram disk '%s'",
machine->initrd_filename);
exit(1);
}
}
/* Load ELF kernel and rootfs.cpio */
} else if (kernel_filename && !machine->firmware) {
boot_from_kernel(machine, &ppc405->soc.cpu);
}
}
static void ref405ep_init(MachineState *machine)
{
DeviceState *dev;
SysBusDevice *s;
MemoryRegion *sram = g_new(MemoryRegion, 1);
ppc405_init(machine);
/* allocate SRAM */
memory_region_init_ram(sram, NULL, "ref405ep.sram", PPC405EP_SRAM_SIZE,
&error_fatal);
memory_region_add_subregion(get_system_memory(), PPC405EP_SRAM_BASE, sram);
/* Register FPGA */
ref405ep_fpga_init(get_system_memory(), PPC405EP_FPGA_BASE);
/* Register NVRAM */
dev = qdev_new("sysbus-m48t08");
qdev_prop_set_int32(dev, "base-year", 1968);
s = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(s, &error_fatal);
sysbus_mmio_map(s, 0, PPC405EP_NVRAM_BASE);
}
static void ref405ep_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "ref405ep";
mc->init = ref405ep_init;
}
static const TypeInfo ref405ep_type = {
.name = MACHINE_TYPE_NAME("ref405ep"),
.parent = TYPE_PPC405_MACHINE,
.class_init = ref405ep_class_init,
};
static void ppc405_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "PPC405 generic machine";
mc->init = ppc405_init;
mc->default_ram_size = 128 * MiB;
mc->default_ram_id = "ppc405.ram";
}
static const TypeInfo ppc405_machine_type = {
.name = TYPE_PPC405_MACHINE,
.parent = TYPE_MACHINE,
.instance_size = sizeof(Ppc405MachineState),
.class_init = ppc405_machine_class_init,
.abstract = true,
};
static void ppc405_machine_init(void)
{
type_register_static(&ppc405_machine_type);
type_register_static(&ref405ep_type);
}
type_init(ppc405_machine_init)
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