*
* Copyright 2007 IBM Corporation.
* Authors:
*
* This work is licensed under the GNU GPL license version 2 or later.
*
#include "hw.h"
#include "pci.h"
#include "boards.h"
-#include "sysemu.h"
#include "ppc440.h"
#include "kvm.h"
#include "kvm_ppc.h"
#include "device_tree.h"
#include "loader.h"
#include "elf.h"
+#include "exec-memory.h"
#define BINARY_DEVICE_TREE_FILE "bamboo.dtb"
-static void *bamboo_load_device_tree(target_phys_addr_t addr,
+/* from u-boot */
+#define KERNEL_ADDR 0x1000000
+#define FDT_ADDR 0x1800000
+#define RAMDISK_ADDR 0x1900000
+
+static target_phys_addr_t entry;
+
+static int bamboo_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)
{
- void *fdt = NULL;
+ int ret = -1;
#ifdef CONFIG_FDT
uint32_t mem_reg_property[] = { 0, 0, ramsize };
char *filename;
int fdt_size;
- int ret;
+ void *fdt;
+ uint32_t tb_freq = 400000000;
+ uint32_t clock_freq = 400000000;
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (!filename) {
goto out;
}
fdt = load_device_tree(filename, &fdt_size);
- qemu_free(filename);
+ g_free(filename);
if (fdt == NULL) {
goto out;
}
if (ret < 0)
fprintf(stderr, "couldn't set /chosen/bootargs\n");
- if (kvm_enabled())
- kvmppc_fdt_update(fdt);
+ /* Copy data from the host device tree into the guest. Since the guest can
+ * directly access the timebase without host involvement, we must expose
+ * the correct frequencies. */
+ if (kvm_enabled()) {
+ tb_freq = kvmppc_get_tbfreq();
+ clock_freq = kvmppc_get_clockfreq();
+ }
+
+ qemu_devtree_setprop_cell(fdt, "/cpus/cpu@0", "clock-frequency",
+ clock_freq);
+ qemu_devtree_setprop_cell(fdt, "/cpus/cpu@0", "timebase-frequency",
+ tb_freq);
- cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
+ ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
+ g_free(fdt);
out:
#endif
- return fdt;
+ return ret;
+}
+
+/* Create reset TLB entries for BookE, spanning the 32bit addr space. */
+static void mmubooke_create_initial_mapping(CPUState *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 void main_cpu_reset(void *opaque)
+{
+ CPUState *env = opaque;
+
+ cpu_reset(env);
+ env->gpr[1] = (16<<20) - 8;
+ env->gpr[3] = FDT_ADDR;
+ env->nip = entry;
+
+ /* Create a mapping for the kernel. */
+ mmubooke_create_initial_mapping(env, 0, 0);
}
static void bamboo_init(ram_addr_t ram_size,
const char *cpu_model)
{
unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 };
+ MemoryRegion *address_space_mem = get_system_memory();
PCIBus *pcibus;
CPUState *env;
uint64_t elf_entry;
uint64_t elf_lowaddr;
- target_phys_addr_t entry = 0;
target_phys_addr_t loadaddr = 0;
- target_long kernel_size = 0;
- target_ulong initrd_base = 0;
target_long initrd_size = 0;
- target_ulong dt_base = 0;
- void *fdt;
+ int success;
int i;
/* Setup CPU. */
- env = ppc440ep_init(&ram_size, &pcibus, pci_irq_nrs, 1, cpu_model);
+ env = ppc440ep_init(address_space_mem, &ram_size, &pcibus,
+ pci_irq_nrs, 1, cpu_model);
+ qemu_register_reset(main_cpu_reset, env);
if (pcibus) {
/* Register network interfaces. */
/* Load kernel. */
if (kernel_filename) {
- kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
- if (kernel_size < 0) {
- kernel_size = load_elf(kernel_filename, 0, &elf_entry, &elf_lowaddr,
- NULL, 1, ELF_MACHINE, 0);
+ success = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
+ if (success < 0) {
+ success = load_elf(kernel_filename, NULL, NULL, &elf_entry,
+ &elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
entry = elf_entry;
loadaddr = elf_lowaddr;
}
/* XXX try again as binary */
- if (kernel_size < 0) {
+ if (success < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
kernel_filename);
exit(1);
/* Load initrd. */
if (initrd_filename) {
- initrd_base = kernel_size + loadaddr;
- initrd_size = load_image_targphys(initrd_filename, initrd_base,
- ram_size - initrd_base);
+ initrd_size = load_image_targphys(initrd_filename, RAMDISK_ADDR,
+ ram_size - RAMDISK_ADDR);
if (initrd_size < 0) {
- fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
- initrd_filename);
+ fprintf(stderr, "qemu: could not load ram disk '%s' at %x\n",
+ initrd_filename, RAMDISK_ADDR);
exit(1);
}
}
/* If we're loading a kernel directly, we must load the device tree too. */
if (kernel_filename) {
- if (initrd_base)
- dt_base = initrd_base + initrd_size;
- else
- dt_base = kernel_size + loadaddr;
-
- fdt = bamboo_load_device_tree(dt_base, ram_size,
- initrd_base, initrd_size, kernel_cmdline);
- if (fdt == NULL) {
+ if (bamboo_load_device_tree(FDT_ADDR, ram_size, RAMDISK_ADDR,
+ initrd_size, kernel_cmdline) < 0) {
fprintf(stderr, "couldn't load device tree\n");
exit(1);
}
-
- /* Set initial guest state. */
- env->gpr[1] = (16<<20) - 8;
- env->gpr[3] = dt_base;
- env->nip = entry;
- /* XXX we currently depend on KVM to create some initial TLB entries. */
}
if (kvm_enabled())
projects / qemu.git / blobdiff