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qemu/hw/ppc/e500.c
Peter Crosthwaite 7ef295ea5b loader: Add data swap option to load-elf 
Some CPUs are of an opposite data-endianness to other components in the
system. Sometimes elfs have the data sections layed out with this CPU
data-endianness accounting for when loaded via the CPU, so byte swaps
(relative to other system components) will occur.

The leading example, is ARM's BE32 mode, which is is basically LE with
address manipulation on half-word and byte accesses to access the
hw/byte reversed address. This means that word data is invariant
across LE and BE32. This also means that instructions are still LE.
The expectation is that the elf will be loaded via the CPU in this
endianness scheme, which means the data in the elf is reversed at
compile time.

As QEMU loads via the system memory directly, rather than the CPU, we
need a mechanism to reverse elf data endianness to implement this
possibility.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-04 11:30:21 +00:00

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/*
* QEMU PowerPC e500-based platforms
*
* Copyright (C) 2009 Freescale Semiconductor, Inc. All rights reserved.
*
* Author: Yu Liu, <yu.liu@freescale.com>
*
* This file is derived from hw/ppc440_bamboo.c,
* the copyright for that material belongs to the original owners.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "e500.h"
#include "e500-ccsr.h"
#include "net/net.h"
#include "qemu/config-file.h"
#include "hw/hw.h"
#include "hw/char/serial.h"
#include "hw/pci/pci.h"
#include "hw/boards.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
#include "kvm_ppc.h"
#include "sysemu/device_tree.h"
#include "hw/ppc/openpic.h"
#include "hw/ppc/ppc.h"
#include "hw/loader.h"
#include "elf.h"
#include "hw/sysbus.h"
#include "exec/address-spaces.h"
#include "qemu/host-utils.h"
#include "hw/pci-host/ppce500.h"
#include "qemu/error-report.h"
#include "hw/platform-bus.h"
#include "hw/net/fsl_etsec/etsec.h"
#define EPAPR_MAGIC (0x45504150)
#define BINARY_DEVICE_TREE_FILE "mpc8544ds.dtb"
#define DTC_LOAD_PAD 0x1800000
#define DTC_PAD_MASK 0xFFFFF
#define DTB_MAX_SIZE (8 * 1024 * 1024)
#define INITRD_LOAD_PAD 0x2000000
#define INITRD_PAD_MASK 0xFFFFFF
#define RAM_SIZES_ALIGN (64UL << 20)
/* TODO: parameterize */
#define MPC8544_CCSRBAR_SIZE 0x00100000ULL
#define MPC8544_MPIC_REGS_OFFSET 0x40000ULL
#define MPC8544_MSI_REGS_OFFSET 0x41600ULL
#define MPC8544_SERIAL0_REGS_OFFSET 0x4500ULL
#define MPC8544_SERIAL1_REGS_OFFSET 0x4600ULL
#define MPC8544_PCI_REGS_OFFSET 0x8000ULL
#define MPC8544_PCI_REGS_SIZE 0x1000ULL
#define MPC8544_UTIL_OFFSET 0xe0000ULL
#define MPC8XXX_GPIO_OFFSET 0x000FF000ULL
#define MPC8XXX_GPIO_IRQ 47
struct boot_info
{
uint32_t dt_base;
uint32_t dt_size;
uint32_t entry;
};
static uint32_t *pci_map_create(void *fdt, uint32_t mpic, int first_slot,
int nr_slots, int *len)
{
int i = 0;
int slot;
int pci_irq;
int host_irq;
int last_slot = first_slot + nr_slots;
uint32_t *pci_map;
*len = nr_slots * 4 * 7 * sizeof(uint32_t);
pci_map = g_malloc(*len);
for (slot = first_slot; slot < last_slot; slot++) {
for (pci_irq = 0; pci_irq < 4; pci_irq++) {
pci_map[i++] = cpu_to_be32(slot << 11);
pci_map[i++] = cpu_to_be32(0x0);
pci_map[i++] = cpu_to_be32(0x0);
pci_map[i++] = cpu_to_be32(pci_irq + 1);
pci_map[i++] = cpu_to_be32(mpic);
host_irq = ppce500_pci_map_irq_slot(slot, pci_irq);
pci_map[i++] = cpu_to_be32(host_irq + 1);
pci_map[i++] = cpu_to_be32(0x1);
}
}
assert((i * sizeof(uint32_t)) == *len);
return pci_map;
}
static void dt_serial_create(void *fdt, unsigned long long offset,
const char *soc, const char *mpic,
const char *alias, int idx, bool defcon)
{
char ser[128];
snprintf(ser, sizeof(ser), "%s/serial@%llx", soc, offset);
qemu_fdt_add_subnode(fdt, ser);
qemu_fdt_setprop_string(fdt, ser, "device_type", "serial");
qemu_fdt_setprop_string(fdt, ser, "compatible", "ns16550");
qemu_fdt_setprop_cells(fdt, ser, "reg", offset, 0x100);
qemu_fdt_setprop_cell(fdt, ser, "cell-index", idx);
qemu_fdt_setprop_cell(fdt, ser, "clock-frequency", 0);
qemu_fdt_setprop_cells(fdt, ser, "interrupts", 42, 2);
qemu_fdt_setprop_phandle(fdt, ser, "interrupt-parent", mpic);
qemu_fdt_setprop_string(fdt, "/aliases", alias, ser);
if (defcon) {
qemu_fdt_setprop_string(fdt, "/chosen", "linux,stdout-path", ser);
}
}
static void create_dt_mpc8xxx_gpio(void *fdt, const char *soc, const char *mpic)
{
hwaddr mmio0 = MPC8XXX_GPIO_OFFSET;
int irq0 = MPC8XXX_GPIO_IRQ;
gchar *node = g_strdup_printf("%s/gpio@%"PRIx64, soc, mmio0);
gchar *poweroff = g_strdup_printf("%s/power-off", soc);
int gpio_ph;
qemu_fdt_add_subnode(fdt, node);
qemu_fdt_setprop_string(fdt, node, "compatible", "fsl,qoriq-gpio");
qemu_fdt_setprop_cells(fdt, node, "reg", mmio0, 0x1000);
qemu_fdt_setprop_cells(fdt, node, "interrupts", irq0, 0x2);
qemu_fdt_setprop_phandle(fdt, node, "interrupt-parent", mpic);
qemu_fdt_setprop_cells(fdt, node, "#gpio-cells", 2);
qemu_fdt_setprop(fdt, node, "gpio-controller", NULL, 0);
gpio_ph = qemu_fdt_alloc_phandle(fdt);
qemu_fdt_setprop_cell(fdt, node, "phandle", gpio_ph);
qemu_fdt_setprop_cell(fdt, node, "linux,phandle", gpio_ph);
/* Power Off Pin */
qemu_fdt_add_subnode(fdt, poweroff);
qemu_fdt_setprop_string(fdt, poweroff, "compatible", "gpio-poweroff");
qemu_fdt_setprop_cells(fdt, poweroff, "gpios", gpio_ph, 0, 0);
g_free(node);
g_free(poweroff);
}
typedef struct PlatformDevtreeData {
void *fdt;
const char *mpic;
int irq_start;
const char *node;
PlatformBusDevice *pbus;
} PlatformDevtreeData;
static int create_devtree_etsec(SysBusDevice *sbdev, PlatformDevtreeData *data)
{
eTSEC *etsec = ETSEC_COMMON(sbdev);
PlatformBusDevice *pbus = data->pbus;
hwaddr mmio0 = platform_bus_get_mmio_addr(pbus, sbdev, 0);
int irq0 = platform_bus_get_irqn(pbus, sbdev, 0);
int irq1 = platform_bus_get_irqn(pbus, sbdev, 1);
int irq2 = platform_bus_get_irqn(pbus, sbdev, 2);
gchar *node = g_strdup_printf("/platform/ethernet@%"PRIx64, mmio0);
gchar *group = g_strdup_printf("%s/queue-group", node);
void *fdt = data->fdt;
assert((int64_t)mmio0 >= 0);
assert(irq0 >= 0);
assert(irq1 >= 0);
assert(irq2 >= 0);
qemu_fdt_add_subnode(fdt, node);
qemu_fdt_setprop_string(fdt, node, "device_type", "network");
qemu_fdt_setprop_string(fdt, node, "compatible", "fsl,etsec2");
qemu_fdt_setprop_string(fdt, node, "model", "eTSEC");
qemu_fdt_setprop(fdt, node, "local-mac-address", etsec->conf.macaddr.a, 6);
qemu_fdt_setprop_cells(fdt, node, "fixed-link", 0, 1, 1000, 0, 0);
qemu_fdt_add_subnode(fdt, group);
qemu_fdt_setprop_cells(fdt, group, "reg", mmio0, 0x1000);
qemu_fdt_setprop_cells(fdt, group, "interrupts",
data->irq_start + irq0, 0x2,
data->irq_start + irq1, 0x2,
data->irq_start + irq2, 0x2);
g_free(node);
g_free(group);
return 0;
}
static int sysbus_device_create_devtree(SysBusDevice *sbdev, void *opaque)
{
PlatformDevtreeData *data = opaque;
bool matched = false;
if (object_dynamic_cast(OBJECT(sbdev), TYPE_ETSEC_COMMON)) {
create_devtree_etsec(sbdev, data);
matched = true;
}
if (!matched) {
error_report("Device %s is not supported by this machine yet.",
qdev_fw_name(DEVICE(sbdev)));
exit(1);
}
return 0;
}
static void platform_bus_create_devtree(PPCE500Params *params, void *fdt,
const char *mpic)
{
gchar *node = g_strdup_printf("/platform@%"PRIx64, params->platform_bus_base);
const char platcomp[] = "qemu,platform\0simple-bus";
uint64_t addr = params->platform_bus_base;
uint64_t size = params->platform_bus_size;
int irq_start = params->platform_bus_first_irq;
PlatformBusDevice *pbus;
DeviceState *dev;
/* Create a /platform node that we can put all devices into */
qemu_fdt_add_subnode(fdt, node);
qemu_fdt_setprop(fdt, node, "compatible", platcomp, sizeof(platcomp));
/* Our platform bus region is less than 32bit big, so 1 cell is enough for
address and size */
qemu_fdt_setprop_cells(fdt, node, "#size-cells", 1);
qemu_fdt_setprop_cells(fdt, node, "#address-cells", 1);
qemu_fdt_setprop_cells(fdt, node, "ranges", 0, addr >> 32, addr, size);
qemu_fdt_setprop_phandle(fdt, node, "interrupt-parent", mpic);
dev = qdev_find_recursive(sysbus_get_default(), TYPE_PLATFORM_BUS_DEVICE);
pbus = PLATFORM_BUS_DEVICE(dev);
/* We can only create dt nodes for dynamic devices when they're ready */
if (pbus->done_gathering) {
PlatformDevtreeData data = {
.fdt = fdt,
.mpic = mpic,
.irq_start = irq_start,
.node = node,
.pbus = pbus,
};
/* Loop through all dynamic sysbus devices and create nodes for them */
foreach_dynamic_sysbus_device(sysbus_device_create_devtree, &data);
}
g_free(node);
}
static int ppce500_load_device_tree(MachineState *machine,
PPCE500Params *params,
hwaddr addr,
hwaddr initrd_base,
hwaddr initrd_size,
hwaddr kernel_base,
hwaddr kernel_size,
bool dry_run)
{
CPUPPCState *env = first_cpu->env_ptr;
int ret = -1;
uint64_t mem_reg_property[] = { 0, cpu_to_be64(machine->ram_size) };
int fdt_size;
void *fdt;
uint8_t hypercall[16];
uint32_t clock_freq = 400000000;
uint32_t tb_freq = 400000000;
int i;
char compatible_sb[] = "fsl,mpc8544-immr\0simple-bus";
char soc[128];
char mpic[128];
uint32_t mpic_ph;
uint32_t msi_ph;
char gutil[128];
char pci[128];
char msi[128];
uint32_t *pci_map = NULL;
int len;
uint32_t pci_ranges[14] =
{
0x2000000, 0x0, params->pci_mmio_bus_base,
params->pci_mmio_base >> 32, params->pci_mmio_base,
0x0, 0x20000000,
0x1000000, 0x0, 0x0,
params->pci_pio_base >> 32, params->pci_pio_base,
0x0, 0x10000,
};
QemuOpts *machine_opts = qemu_get_machine_opts();
const char *dtb_file = qemu_opt_get(machine_opts, "dtb");
const char *toplevel_compat = qemu_opt_get(machine_opts, "dt_compatible");
if (dtb_file) {
char *filename;
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_file);
if (!filename) {
goto out;
}
fdt = load_device_tree(filename, &fdt_size);
g_free(filename);
if (!fdt) {
goto out;
}
goto done;
}
fdt = create_device_tree(&fdt_size);
if (fdt == NULL) {
goto out;
}
/* Manipulate device tree in memory. */
qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 2);
qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 2);
qemu_fdt_add_subnode(fdt, "/memory");
qemu_fdt_setprop_string(fdt, "/memory", "device_type", "memory");
qemu_fdt_setprop(fdt, "/memory", "reg", mem_reg_property,
sizeof(mem_reg_property));
qemu_fdt_add_subnode(fdt, "/chosen");
if (initrd_size) {
ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start",
initrd_base);
if (ret < 0) {
fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
}
ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end",
(initrd_base + initrd_size));
if (ret < 0) {
fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
}
}
if (kernel_base != -1ULL) {
qemu_fdt_setprop_cells(fdt, "/chosen", "qemu,boot-kernel",
kernel_base >> 32, kernel_base,
kernel_size >> 32, kernel_size);
}
ret = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
machine->kernel_cmdline);
if (ret < 0)
fprintf(stderr, "couldn't set /chosen/bootargs\n");
if (kvm_enabled()) {
/* Read out host's frequencies */
clock_freq = kvmppc_get_clockfreq();
tb_freq = kvmppc_get_tbfreq();
/* indicate KVM hypercall interface */
qemu_fdt_add_subnode(fdt, "/hypervisor");
qemu_fdt_setprop_string(fdt, "/hypervisor", "compatible",
"linux,kvm");
kvmppc_get_hypercall(env, hypercall, sizeof(hypercall));
qemu_fdt_setprop(fdt, "/hypervisor", "hcall-instructions",
hypercall, sizeof(hypercall));
/* if KVM supports the idle hcall, set property indicating this */
if (kvmppc_get_hasidle(env)) {
qemu_fdt_setprop(fdt, "/hypervisor", "has-idle", NULL, 0);
}
}
/* Create CPU nodes */
qemu_fdt_add_subnode(fdt, "/cpus");
qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 1);
qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0);
/* We need to generate the cpu nodes in reverse order, so Linux can pick
the first node as boot node and be happy */
for (i = smp_cpus - 1; i >= 0; i--) {
CPUState *cpu;
PowerPCCPU *pcpu;
char cpu_name[128];
uint64_t cpu_release_addr = params->spin_base + (i * 0x20);
cpu = qemu_get_cpu(i);
if (cpu == NULL) {
continue;
}
env = cpu->env_ptr;
pcpu = POWERPC_CPU(cpu);
snprintf(cpu_name, sizeof(cpu_name), "/cpus/PowerPC,8544@%x",
ppc_get_vcpu_dt_id(pcpu));
qemu_fdt_add_subnode(fdt, cpu_name);
qemu_fdt_setprop_cell(fdt, cpu_name, "clock-frequency", clock_freq);
qemu_fdt_setprop_cell(fdt, cpu_name, "timebase-frequency", tb_freq);
qemu_fdt_setprop_string(fdt, cpu_name, "device_type", "cpu");
qemu_fdt_setprop_cell(fdt, cpu_name, "reg",
ppc_get_vcpu_dt_id(pcpu));
qemu_fdt_setprop_cell(fdt, cpu_name, "d-cache-line-size",
env->dcache_line_size);
qemu_fdt_setprop_cell(fdt, cpu_name, "i-cache-line-size",
env->icache_line_size);
qemu_fdt_setprop_cell(fdt, cpu_name, "d-cache-size", 0x8000);
qemu_fdt_setprop_cell(fdt, cpu_name, "i-cache-size", 0x8000);
qemu_fdt_setprop_cell(fdt, cpu_name, "bus-frequency", 0);
if (cpu->cpu_index) {
qemu_fdt_setprop_string(fdt, cpu_name, "status", "disabled");
qemu_fdt_setprop_string(fdt, cpu_name, "enable-method",
"spin-table");
qemu_fdt_setprop_u64(fdt, cpu_name, "cpu-release-addr",
cpu_release_addr);
} else {
qemu_fdt_setprop_string(fdt, cpu_name, "status", "okay");
}
}
qemu_fdt_add_subnode(fdt, "/aliases");
/* XXX These should go into their respective devices' code */
snprintf(soc, sizeof(soc), "/soc@%"PRIx64, params->ccsrbar_base);
qemu_fdt_add_subnode(fdt, soc);
qemu_fdt_setprop_string(fdt, soc, "device_type", "soc");
qemu_fdt_setprop(fdt, soc, "compatible", compatible_sb,
sizeof(compatible_sb));
qemu_fdt_setprop_cell(fdt, soc, "#address-cells", 1);
qemu_fdt_setprop_cell(fdt, soc, "#size-cells", 1);
qemu_fdt_setprop_cells(fdt, soc, "ranges", 0x0,
params->ccsrbar_base >> 32, params->ccsrbar_base,
MPC8544_CCSRBAR_SIZE);
/* XXX should contain a reasonable value */
qemu_fdt_setprop_cell(fdt, soc, "bus-frequency", 0);
snprintf(mpic, sizeof(mpic), "%s/pic@%llx", soc, MPC8544_MPIC_REGS_OFFSET);
qemu_fdt_add_subnode(fdt, mpic);
qemu_fdt_setprop_string(fdt, mpic, "device_type", "open-pic");
qemu_fdt_setprop_string(fdt, mpic, "compatible", "fsl,mpic");
qemu_fdt_setprop_cells(fdt, mpic, "reg", MPC8544_MPIC_REGS_OFFSET,
0x40000);
qemu_fdt_setprop_cell(fdt, mpic, "#address-cells", 0);
qemu_fdt_setprop_cell(fdt, mpic, "#interrupt-cells", 2);
mpic_ph = qemu_fdt_alloc_phandle(fdt);
qemu_fdt_setprop_cell(fdt, mpic, "phandle", mpic_ph);
qemu_fdt_setprop_cell(fdt, mpic, "linux,phandle", mpic_ph);
qemu_fdt_setprop(fdt, mpic, "interrupt-controller", NULL, 0);
/*
* We have to generate ser1 first, because Linux takes the first
* device it finds in the dt as serial output device. And we generate
* devices in reverse order to the dt.
*/
if (serial_hds[1]) {
dt_serial_create(fdt, MPC8544_SERIAL1_REGS_OFFSET,
soc, mpic, "serial1", 1, false);
}
if (serial_hds[0]) {
dt_serial_create(fdt, MPC8544_SERIAL0_REGS_OFFSET,
soc, mpic, "serial0", 0, true);
}
snprintf(gutil, sizeof(gutil), "%s/global-utilities@%llx", soc,
MPC8544_UTIL_OFFSET);
qemu_fdt_add_subnode(fdt, gutil);
qemu_fdt_setprop_string(fdt, gutil, "compatible", "fsl,mpc8544-guts");
qemu_fdt_setprop_cells(fdt, gutil, "reg", MPC8544_UTIL_OFFSET, 0x1000);
qemu_fdt_setprop(fdt, gutil, "fsl,has-rstcr", NULL, 0);
snprintf(msi, sizeof(msi), "/%s/msi@%llx", soc, MPC8544_MSI_REGS_OFFSET);
qemu_fdt_add_subnode(fdt, msi);
qemu_fdt_setprop_string(fdt, msi, "compatible", "fsl,mpic-msi");
qemu_fdt_setprop_cells(fdt, msi, "reg", MPC8544_MSI_REGS_OFFSET, 0x200);
msi_ph = qemu_fdt_alloc_phandle(fdt);
qemu_fdt_setprop_cells(fdt, msi, "msi-available-ranges", 0x0, 0x100);
qemu_fdt_setprop_phandle(fdt, msi, "interrupt-parent", mpic);
qemu_fdt_setprop_cells(fdt, msi, "interrupts",
0xe0, 0x0,
0xe1, 0x0,
0xe2, 0x0,
0xe3, 0x0,
0xe4, 0x0,
0xe5, 0x0,
0xe6, 0x0,
0xe7, 0x0);
qemu_fdt_setprop_cell(fdt, msi, "phandle", msi_ph);
qemu_fdt_setprop_cell(fdt, msi, "linux,phandle", msi_ph);
snprintf(pci, sizeof(pci), "/pci@%llx",
params->ccsrbar_base + MPC8544_PCI_REGS_OFFSET);
qemu_fdt_add_subnode(fdt, pci);
qemu_fdt_setprop_cell(fdt, pci, "cell-index", 0);
qemu_fdt_setprop_string(fdt, pci, "compatible", "fsl,mpc8540-pci");
qemu_fdt_setprop_string(fdt, pci, "device_type", "pci");
qemu_fdt_setprop_cells(fdt, pci, "interrupt-map-mask", 0xf800, 0x0,
0x0, 0x7);
pci_map = pci_map_create(fdt, qemu_fdt_get_phandle(fdt, mpic),
params->pci_first_slot, params->pci_nr_slots,
&len);
qemu_fdt_setprop(fdt, pci, "interrupt-map", pci_map, len);
qemu_fdt_setprop_phandle(fdt, pci, "interrupt-parent", mpic);
qemu_fdt_setprop_cells(fdt, pci, "interrupts", 24, 2);
qemu_fdt_setprop_cells(fdt, pci, "bus-range", 0, 255);
for (i = 0; i < 14; i++) {
pci_ranges[i] = cpu_to_be32(pci_ranges[i]);
}
qemu_fdt_setprop_cell(fdt, pci, "fsl,msi", msi_ph);
qemu_fdt_setprop(fdt, pci, "ranges", pci_ranges, sizeof(pci_ranges));
qemu_fdt_setprop_cells(fdt, pci, "reg",
(params->ccsrbar_base + MPC8544_PCI_REGS_OFFSET) >> 32,
(params->ccsrbar_base + MPC8544_PCI_REGS_OFFSET),
0, 0x1000);
qemu_fdt_setprop_cell(fdt, pci, "clock-frequency", 66666666);
qemu_fdt_setprop_cell(fdt, pci, "#interrupt-cells", 1);
qemu_fdt_setprop_cell(fdt, pci, "#size-cells", 2);
qemu_fdt_setprop_cell(fdt, pci, "#address-cells", 3);
qemu_fdt_setprop_string(fdt, "/aliases", "pci0", pci);
if (params->has_mpc8xxx_gpio) {
create_dt_mpc8xxx_gpio(fdt, soc, mpic);
}
if (params->has_platform_bus) {
platform_bus_create_devtree(params, fdt, mpic);
}
params->fixup_devtree(params, fdt);
if (toplevel_compat) {
qemu_fdt_setprop(fdt, "/", "compatible", toplevel_compat,
strlen(toplevel_compat) + 1);
}
done:
if (!dry_run) {
qemu_fdt_dumpdtb(fdt, fdt_size);
cpu_physical_memory_write(addr, fdt, fdt_size);
}
ret = fdt_size;
out:
g_free(pci_map);
return ret;
}
typedef struct DeviceTreeParams {
MachineState *machine;
PPCE500Params params;
hwaddr addr;
hwaddr initrd_base;
hwaddr initrd_size;
hwaddr kernel_base;
hwaddr kernel_size;
Notifier notifier;
} DeviceTreeParams;
static void ppce500_reset_device_tree(void *opaque)
{
DeviceTreeParams *p = opaque;
ppce500_load_device_tree(p->machine, &p->params, p->addr, p->initrd_base,
p->initrd_size, p->kernel_base, p->kernel_size,
false);
}
static void ppce500_init_notify(Notifier *notifier, void *data)
{
DeviceTreeParams *p = container_of(notifier, DeviceTreeParams, notifier);
ppce500_reset_device_tree(p);
}
static int ppce500_prep_device_tree(MachineState *machine,
PPCE500Params *params,
hwaddr addr,
hwaddr initrd_base,
hwaddr initrd_size,
hwaddr kernel_base,
hwaddr kernel_size)
{
DeviceTreeParams *p = g_new(DeviceTreeParams, 1);
p->machine = machine;
p->params = *params;
p->addr = addr;
p->initrd_base = initrd_base;
p->initrd_size = initrd_size;
p->kernel_base = kernel_base;
p->kernel_size = kernel_size;
qemu_register_reset(ppce500_reset_device_tree, p);
p->notifier.notify = ppce500_init_notify;
qemu_add_machine_init_done_notifier(&p->notifier);
/* Issue the device tree loader once, so that we get the size of the blob */
return ppce500_load_device_tree(machine, params, addr, initrd_base,
initrd_size, kernel_base, kernel_size,
true);
}
/* Create -kernel TLB entries for BookE. */
static inline hwaddr booke206_page_size_to_tlb(uint64_t size)
{
return 63 - clz64(size >> 10);
}
static int booke206_initial_map_tsize(CPUPPCState *env)
{
struct boot_info *bi = env->load_info;
hwaddr dt_end;
int ps;
/* Our initial TLB entry needs to cover everything from 0 to
the device tree top */
dt_end = bi->dt_base + bi->dt_size;
ps = booke206_page_size_to_tlb(dt_end) + 1;
if (ps & 1) {
/* e500v2 can only do even TLB size bits */
ps++;
}
return ps;
}
static uint64_t mmubooke_initial_mapsize(CPUPPCState *env)
{
int tsize;
tsize = booke206_initial_map_tsize(env);
return (1ULL << 10 << tsize);
}
static void mmubooke_create_initial_mapping(CPUPPCState *env)
{
ppcmas_tlb_t *tlb = booke206_get_tlbm(env, 1, 0, 0);
hwaddr size;
int ps;
ps = booke206_initial_map_tsize(env);
size = (ps << MAS1_TSIZE_SHIFT);
tlb->mas1 = MAS1_VALID | size;
tlb->mas2 = 0;
tlb->mas7_3 = 0;
tlb->mas7_3 |= MAS3_UR | MAS3_UW | MAS3_UX | MAS3_SR | MAS3_SW | MAS3_SX;
env->tlb_dirty = true;
}
static void ppce500_cpu_reset_sec(void *opaque)
{
PowerPCCPU *cpu = opaque;
CPUState *cs = CPU(cpu);
cpu_reset(cs);
/* Secondary CPU starts in halted state for now. Needs to change when
implementing non-kernel boot. */
cs->halted = 1;
cs->exception_index = EXCP_HLT;
}
static void ppce500_cpu_reset(void *opaque)
{
PowerPCCPU *cpu = opaque;
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
struct boot_info *bi = env->load_info;
cpu_reset(cs);
/* Set initial guest state. */
cs->halted = 0;
env->gpr[1] = (16<<20) - 8;
env->gpr[3] = bi->dt_base;
env->gpr[4] = 0;
env->gpr[5] = 0;
env->gpr[6] = EPAPR_MAGIC;
env->gpr[7] = mmubooke_initial_mapsize(env);
env->gpr[8] = 0;
env->gpr[9] = 0;
env->nip = bi->entry;
mmubooke_create_initial_mapping(env);
}
static DeviceState *ppce500_init_mpic_qemu(PPCE500Params *params,
qemu_irq **irqs)
{
DeviceState *dev;
SysBusDevice *s;
int i, j, k;
dev = qdev_create(NULL, TYPE_OPENPIC);
qdev_prop_set_uint32(dev, "model", params->mpic_version);
qdev_prop_set_uint32(dev, "nb_cpus", smp_cpus);
qdev_init_nofail(dev);
s = SYS_BUS_DEVICE(dev);
k = 0;
for (i = 0; i < smp_cpus; i++) {
for (j = 0; j < OPENPIC_OUTPUT_NB; j++) {
sysbus_connect_irq(s, k++, irqs[i][j]);
}
}
return dev;
}
static DeviceState *ppce500_init_mpic_kvm(PPCE500Params *params,
qemu_irq **irqs, Error **errp)
{
Error *err = NULL;
DeviceState *dev;
CPUState *cs;
dev = qdev_create(NULL, TYPE_KVM_OPENPIC);
qdev_prop_set_uint32(dev, "model", params->mpic_version);
object_property_set_bool(OBJECT(dev), true, "realized", &err);
if (err) {
error_propagate(errp, err);
object_unparent(OBJECT(dev));
return NULL;
}
CPU_FOREACH(cs) {
if (kvm_openpic_connect_vcpu(dev, cs)) {
fprintf(stderr, "%s: failed to connect vcpu to irqchip\n",
__func__);
abort();
}
}
return dev;
}
static qemu_irq *ppce500_init_mpic(MachineState *machine, PPCE500Params *params,
MemoryRegion *ccsr, qemu_irq **irqs)
{
qemu_irq *mpic;
DeviceState *dev = NULL;
SysBusDevice *s;
int i;
mpic = g_new0(qemu_irq, 256);
if (kvm_enabled()) {
Error *err = NULL;
if (machine_kernel_irqchip_allowed(machine)) {
dev = ppce500_init_mpic_kvm(params, irqs, &err);
}
if (machine_kernel_irqchip_required(machine) && !dev) {
error_reportf_err(err,
"kernel_irqchip requested but unavailable: ");
exit(1);
}
}
if (!dev) {
dev = ppce500_init_mpic_qemu(params, irqs);
}
for (i = 0; i < 256; i++) {
mpic[i] = qdev_get_gpio_in(dev, i);
}
s = SYS_BUS_DEVICE(dev);
memory_region_add_subregion(ccsr, MPC8544_MPIC_REGS_OFFSET,
s->mmio[0].memory);
return mpic;
}
static void ppce500_power_off(void *opaque, int line, int on)
{
if (on) {
qemu_system_shutdown_request();
}
}
void ppce500_init(MachineState *machine, PPCE500Params *params)
{
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
PCIBus *pci_bus;
CPUPPCState *env = NULL;
uint64_t loadaddr;
hwaddr kernel_base = -1LL;
int kernel_size = 0;
hwaddr dt_base = 0;
hwaddr initrd_base = 0;
int initrd_size = 0;
hwaddr cur_base = 0;
char *filename;
hwaddr bios_entry = 0;
target_long bios_size;
struct boot_info *boot_info;
int dt_size;
int i;
/* irq num for pin INTA, INTB, INTC and INTD is 1, 2, 3 and
* 4 respectively */
unsigned int pci_irq_nrs[PCI_NUM_PINS] = {1, 2, 3, 4};
qemu_irq **irqs, *mpic;
DeviceState *dev;
CPUPPCState *firstenv = NULL;
MemoryRegion *ccsr_addr_space;
SysBusDevice *s;
PPCE500CCSRState *ccsr;
/* Setup CPUs */
if (machine->cpu_model == NULL) {
machine->cpu_model = "e500v2_v30";
}
irqs = g_malloc0(smp_cpus * sizeof(qemu_irq *));
irqs[0] = g_malloc0(smp_cpus * sizeof(qemu_irq) * OPENPIC_OUTPUT_NB);
for (i = 0; i < smp_cpus; i++) {
PowerPCCPU *cpu;
CPUState *cs;
qemu_irq *input;
cpu = cpu_ppc_init(machine->cpu_model);
if (cpu == NULL) {
fprintf(stderr, "Unable to initialize CPU!\n");
exit(1);
}
env = &cpu->env;
cs = CPU(cpu);
if (!firstenv) {
firstenv = env;
}
irqs[i] = irqs[0] + (i * OPENPIC_OUTPUT_NB);
input = (qemu_irq *)env->irq_inputs;
irqs[i][OPENPIC_OUTPUT_INT] = input[PPCE500_INPUT_INT];
irqs[i][OPENPIC_OUTPUT_CINT] = input[PPCE500_INPUT_CINT];
env->spr_cb[SPR_BOOKE_PIR].default_value = cs->cpu_index = i;
env->mpic_iack = params->ccsrbar_base +
MPC8544_MPIC_REGS_OFFSET + 0xa0;
ppc_booke_timers_init(cpu, 400000000, PPC_TIMER_E500);
/* Register reset handler */
if (!i) {
/* Primary CPU */
struct boot_info *boot_info;
boot_info = g_malloc0(sizeof(struct boot_info));
qemu_register_reset(ppce500_cpu_reset, cpu);
env->load_info = boot_info;
} else {
/* Secondary CPUs */
qemu_register_reset(ppce500_cpu_reset_sec, cpu);
}
}
env = firstenv;
/* Fixup Memory size on a alignment boundary */
ram_size &= ~(RAM_SIZES_ALIGN - 1);
machine->ram_size = ram_size;
/* Register Memory */
memory_region_allocate_system_memory(ram, NULL, "mpc8544ds.ram", ram_size);
memory_region_add_subregion(address_space_mem, 0, ram);
dev = qdev_create(NULL, "e500-ccsr");
object_property_add_child(qdev_get_machine(), "e500-ccsr",
OBJECT(dev), NULL);
qdev_init_nofail(dev);
ccsr = CCSR(dev);
ccsr_addr_space = &ccsr->ccsr_space;
memory_region_add_subregion(address_space_mem, params->ccsrbar_base,
ccsr_addr_space);
mpic = ppce500_init_mpic(machine, params, ccsr_addr_space, irqs);
/* Serial */
if (serial_hds[0]) {
serial_mm_init(ccsr_addr_space, MPC8544_SERIAL0_REGS_OFFSET,
0, mpic[42], 399193,
serial_hds[0], DEVICE_BIG_ENDIAN);
}
if (serial_hds[1]) {
serial_mm_init(ccsr_addr_space, MPC8544_SERIAL1_REGS_OFFSET,
0, mpic[42], 399193,
serial_hds[1], DEVICE_BIG_ENDIAN);
}
/* General Utility device */
dev = qdev_create(NULL, "mpc8544-guts");
qdev_init_nofail(dev);
s = SYS_BUS_DEVICE(dev);
memory_region_add_subregion(ccsr_addr_space, MPC8544_UTIL_OFFSET,
sysbus_mmio_get_region(s, 0));
/* PCI */
dev = qdev_create(NULL, "e500-pcihost");
qdev_prop_set_uint32(dev, "first_slot", params->pci_first_slot);
qdev_prop_set_uint32(dev, "first_pin_irq", pci_irq_nrs[0]);
qdev_init_nofail(dev);
s = SYS_BUS_DEVICE(dev);
for (i = 0; i < PCI_NUM_PINS; i++) {
sysbus_connect_irq(s, i, mpic[pci_irq_nrs[i]]);
}
memory_region_add_subregion(ccsr_addr_space, MPC8544_PCI_REGS_OFFSET,
sysbus_mmio_get_region(s, 0));
pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
if (!pci_bus)
printf("couldn't create PCI controller!\n");
if (pci_bus) {
/* Register network interfaces. */
for (i = 0; i < nb_nics; i++) {
pci_nic_init_nofail(&nd_table[i], pci_bus, "virtio", NULL);
}
}
/* Register spinning region */
sysbus_create_simple("e500-spin", params->spin_base, NULL);
if (cur_base < (32 * 1024 * 1024)) {
/* u-boot occupies memory up to 32MB, so load blobs above */
cur_base = (32 * 1024 * 1024);
}
if (params->has_mpc8xxx_gpio) {
qemu_irq poweroff_irq;
dev = qdev_create(NULL, "mpc8xxx_gpio");
s = SYS_BUS_DEVICE(dev);
qdev_init_nofail(dev);
sysbus_connect_irq(s, 0, mpic[MPC8XXX_GPIO_IRQ]);
memory_region_add_subregion(ccsr_addr_space, MPC8XXX_GPIO_OFFSET,
sysbus_mmio_get_region(s, 0));
/* Power Off GPIO at Pin 0 */
poweroff_irq = qemu_allocate_irq(ppce500_power_off, NULL, 0);
qdev_connect_gpio_out(dev, 0, poweroff_irq);
}
/* Platform Bus Device */
if (params->has_platform_bus) {
dev = qdev_create(NULL, TYPE_PLATFORM_BUS_DEVICE);
dev->id = TYPE_PLATFORM_BUS_DEVICE;
qdev_prop_set_uint32(dev, "num_irqs", params->platform_bus_num_irqs);
qdev_prop_set_uint32(dev, "mmio_size", params->platform_bus_size);
qdev_init_nofail(dev);
s = SYS_BUS_DEVICE(dev);
for (i = 0; i < params->platform_bus_num_irqs; i++) {
int irqn = params->platform_bus_first_irq + i;
sysbus_connect_irq(s, i, mpic[irqn]);
}
memory_region_add_subregion(address_space_mem,
params->platform_bus_base,
sysbus_mmio_get_region(s, 0));
}
/* Load kernel. */
if (machine->kernel_filename) {
kernel_base = cur_base;
kernel_size = load_image_targphys(machine->kernel_filename,
cur_base,
ram_size - cur_base);
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
machine->kernel_filename);
exit(1);
}
cur_base += kernel_size;
}
/* Load initrd. */
if (machine->initrd_filename) {
initrd_base = (cur_base + INITRD_LOAD_PAD) & ~INITRD_PAD_MASK;
initrd_size = load_image_targphys(machine->initrd_filename, initrd_base,
ram_size - initrd_base);
if (initrd_size < 0) {
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
machine->initrd_filename);
exit(1);
}
cur_base = initrd_base + initrd_size;
}
/*
* Smart firmware defaults ahead!
*
* We follow the following table to select which payload we execute.
*
* -kernel | -bios | payload
* ---------+-------+---------
* N | Y | u-boot
* N | N | u-boot
* Y | Y | u-boot
* Y | N | kernel
*
* This ensures backwards compatibility with how we used to expose
* -kernel to users but allows them to run through u-boot as well.
*/
if (bios_name == NULL) {
if (machine->kernel_filename) {
bios_name = machine->kernel_filename;
} else {
bios_name = "u-boot.e500";
}
}
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
bios_size = load_elf(filename, NULL, NULL, &bios_entry, &loadaddr, NULL,
1, PPC_ELF_MACHINE, 0, 0);
if (bios_size < 0) {
/*
* Hrm. No ELF image? Try a uImage, maybe someone is giving us an
* ePAPR compliant kernel
*/
kernel_size = load_uimage(filename, &bios_entry, &loadaddr, NULL,
NULL, NULL);
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load firmware '%s'\n", filename);
exit(1);
}
}
g_free(filename);
/* Reserve space for dtb */
dt_base = (loadaddr + bios_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK;
dt_size = ppce500_prep_device_tree(machine, params, dt_base,
initrd_base, initrd_size,
kernel_base, kernel_size);
if (dt_size < 0) {
fprintf(stderr, "couldn't load device tree\n");
exit(1);
}
assert(dt_size < DTB_MAX_SIZE);
boot_info = env->load_info;
boot_info->entry = bios_entry;
boot_info->dt_base = dt_base;
boot_info->dt_size = dt_size;
}
static int e500_ccsr_initfn(SysBusDevice *dev)
{
PPCE500CCSRState *ccsr;
ccsr = CCSR(dev);
memory_region_init(&ccsr->ccsr_space, OBJECT(ccsr), "e500-ccsr",
MPC8544_CCSRBAR_SIZE);
return 0;
}
static void e500_ccsr_class_init(ObjectClass *klass, void *data)
{
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = e500_ccsr_initfn;
}
static const TypeInfo e500_ccsr_info = {
.name = TYPE_CCSR,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(PPCE500CCSRState),
.class_init = e500_ccsr_class_init,
};
static void e500_register_types(void)
{
type_register_static(&e500_ccsr_info);
}
type_init(e500_register_types)
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