/*
* Model of Xilinx Virtex5 ML507 PPC-440 refdesign.
*
* Copyright (c) 2010 Edgar E. Iglesias.
*
* 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 "sysbus.h"
#include "hw.h"
#include "pc.h"
#include "net.h"
#include "flash.h"
#include "sysemu.h"
#include "devices.h"
#include "boards.h"
#include "device_tree.h"
#include "loader.h"
#include "elf.h"
#include "qemu-log.h"
#include "exec-memory.h"
#include "ppc.h"
#include "ppc4xx.h"
#include "ppc405.h"
#include "blockdev.h"
#include "xilinx.h"
#define EPAPR_MAGIC (0x45504150)
#define FLASH_SIZE (16 * 1024 * 1024)
static struct boot_info
{
uint32_t bootstrap_pc;
uint32_t cmdline;
uint32_t fdt;
uint32_t ima_size;
void *vfdt;
} boot_info;
/* Create reset TLB entries for BookE, spanning the 32bit addr space. */
static void mmubooke_create_initial_mapping(CPUPPCState *env,
target_ulong va,
target_phys_addr_t pa)
{
ppcemb_tlb_t *tlb = &env->tlb.tlbe[0];
tlb->attr = 0;
tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
tlb->size = 1 << 31; /* up to 0x80000000 */
tlb->EPN = va & TARGET_PAGE_MASK;
tlb->RPN = pa & TARGET_PAGE_MASK;
tlb->PID = 0;
tlb = &env->tlb.tlbe[1];
tlb->attr = 0;
tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
tlb->size = 1 << 31; /* up to 0xffffffff */
tlb->EPN = 0x80000000 & TARGET_PAGE_MASK;
tlb->RPN = 0x80000000 & TARGET_PAGE_MASK;
tlb->PID = 0;
}
static PowerPCCPU *ppc440_init_xilinx(ram_addr_t *ram_size,
int do_init,
const char *cpu_model,
uint32_t sysclk)
{
PowerPCCPU *cpu;
CPUPPCState *env;
qemu_irq *irqs;
cpu = cpu_ppc_init(cpu_model);
if (cpu == NULL) {
fprintf(stderr, "Unable to initialize CPU!\n");
exit(1);
}
env = &cpu->env;
ppc_booke_timers_init(env, sysclk, 0/* no flags */);
ppc_dcr_init(env, NULL, NULL);
/* interrupt controller */
irqs = g_malloc0(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB);
irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
ppcuic_init(env, irqs, 0x0C0, 0, 1);
return cpu;
}
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));
/* Linux Kernel Parameters (passing device tree):
* r3: pointer to the fdt
* r4: 0
* r5: 0
* r6: epapr magic
* r7: size of IMA in bytes
* r8: 0
* r9: 0
*/
env->gpr[1] = (16<<20) - 8;
/* Provide a device-tree. */
env->gpr[3] = bi->fdt;
env->nip = bi->bootstrap_pc;
/* Create a mapping for the kernel. */
mmubooke_create_initial_mapping(env, 0, 0);
env->gpr[6] = tswap32(EPAPR_MAGIC);
env->gpr[7] = bi->ima_size;
}
#define BINARY_DEVICE_TREE_FILE "virtex-ml507.dtb"
static int xilinx_load_device_tree(target_phys_addr_t addr,
uint32_t ramsize,
target_phys_addr_t initrd_base,
target_phys_addr_t initrd_size,
const char *kernel_cmdline)
{
char *path;
int fdt_size;
#ifdef CONFIG_FDT
void *fdt;
int r;
/* Try the local "ppc.dtb" override. */
fdt = load_device_tree("ppc.dtb", &fdt_size);
if (!fdt) {
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (path) {
fdt = load_device_tree(path, &fdt_size);
g_free(path);
}
if (!fdt) {
return 0;
}
}
r = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
if (r < 0)
fprintf(stderr, "couldn't set /chosen/bootargs\n");
cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
#else
/* We lack libfdt so we cannot manipulate the fdt. Just pass on the blob
to the kernel. */
fdt_size = load_image_targphys("ppc.dtb", addr, 0x10000);
if (fdt_size < 0) {
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (path) {
fdt_size = load_image_targphys(path, addr, 0x10000);
g_free(path);
}
}
if (kernel_cmdline) {
fprintf(stderr,
"Warning: missing libfdt, cannot pass cmdline to kernel!\n");
}
#endif
return fdt_size;
}
static void virtex_init(ram_addr_t ram_size,
const char *boot_device,
const char *kernel_filename,
const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
MemoryRegion *address_space_mem = get_system_memory();
DeviceState *dev;
PowerPCCPU *cpu;
CPUPPCState *env;
target_phys_addr_t ram_base = 0;
DriveInfo *dinfo;
MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
qemu_irq irq[32], *cpu_irq;
int kernel_size;
int i;
/* init CPUs */
if (cpu_model == NULL) {
cpu_model = "440-Xilinx";
}
cpu = ppc440_init_xilinx(&ram_size, 1, cpu_model, 400000000);
env = &cpu->env;
qemu_register_reset(main_cpu_reset, cpu);
memory_region_init_ram(phys_ram, "ram", ram_size);
vmstate_register_ram_global(phys_ram);
memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
dinfo = drive_get(IF_PFLASH, 0, 0);
pflash_cfi01_register(0xfc000000, NULL, "virtex.flash", FLASH_SIZE,
dinfo ? dinfo->bdrv : NULL, (64 * 1024),
FLASH_SIZE >> 16,
1, 0x89, 0x18, 0x0000, 0x0, 1);
cpu_irq = (qemu_irq *) &env->irq_inputs[PPC40x_INPUT_INT];
dev = xilinx_intc_create(0x81800000, cpu_irq[0], 0);
for (i = 0; i < 32; i++) {
irq[i] = qdev_get_gpio_in(dev, i);
}
serial_mm_init(address_space_mem, 0x83e01003ULL, 2, irq[9], 115200,
serial_hds[0], DEVICE_LITTLE_ENDIAN);
/* 2 timers at irq 2 @ 62 Mhz. */
xilinx_timer_create(0x83c00000, irq[3], 0, 62 * 1000000);
if (kernel_filename) {
uint64_t entry, low, high;
target_phys_addr_t boot_offset;
/* Boots a kernel elf binary. */
kernel_size = load_elf(kernel_filename, NULL, NULL,
&entry, &low, &high, 1, ELF_MACHINE, 0);
boot_info.bootstrap_pc = entry & 0x00ffffff;
if (kernel_size < 0) {
boot_offset = 0x1200000;
/* If we failed loading ELF's try a raw image. */
kernel_size = load_image_targphys(kernel_filename,
boot_offset,
ram_size);
boot_info.bootstrap_pc = boot_offset;
high = boot_info.bootstrap_pc + kernel_size + 8192;
}
boot_info.ima_size = kernel_size;
/* Provide a device-tree. */
boot_info.fdt = high + (8192 * 2);
boot_info.fdt &= ~8191;
xilinx_load_device_tree(boot_info.fdt, ram_size, 0, 0, kernel_cmdline);
}
env->load_info = &boot_info;
}
static QEMUMachine virtex_machine = {
.name = "virtex-ml507",
.desc = "Xilinx Virtex ML507 reference design",
.init = virtex_init,
};
static void virtex_machine_init(void)
{
qemu_register_machine(&virtex_machine);
}
machine_init(virtex_machine_init);
