PPC: Make MPC8544DS emulation work w/o KVM
The MPC8544DS board emulation was only used with KVM so far, so some parts of the code didn't provide proper values for non-KVM execution. This patch makes the machine work without KVM enabled. To actually use this, you also need proper e500v2 MMU emulation. Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf
parent
ef250db6f1
commit
3b989d499e
@ -28,6 +28,7 @@
|
||||
#include "kvm_ppc.h"
|
||||
#include "device_tree.h"
|
||||
#include "openpic.h"
|
||||
#include "ppc.h"
|
||||
#include "ppce500.h"
|
||||
#include "loader.h"
|
||||
#include "elf.h"
|
||||
@ -50,6 +51,12 @@
|
||||
#define MPC8544_PCI_IO 0xE1000000
|
||||
#define MPC8544_PCI_IOLEN 0x10000
|
||||
|
||||
struct boot_info
|
||||
{
|
||||
uint32_t dt_base;
|
||||
uint32_t entry;
|
||||
};
|
||||
|
||||
#ifdef CONFIG_FDT
|
||||
static int mpc8544_copy_soc_cell(void *fdt, const char *node, const char *prop)
|
||||
{
|
||||
@ -82,7 +89,7 @@ static int mpc8544_load_device_tree(target_phys_addr_t addr,
|
||||
{
|
||||
int ret = -1;
|
||||
#ifdef CONFIG_FDT
|
||||
uint32_t mem_reg_property[] = {0, ramsize};
|
||||
uint32_t mem_reg_property[] = {0, cpu_to_be32(ramsize)};
|
||||
char *filename;
|
||||
int fdt_size;
|
||||
void *fdt;
|
||||
@ -103,15 +110,19 @@ static int mpc8544_load_device_tree(target_phys_addr_t addr,
|
||||
if (ret < 0)
|
||||
fprintf(stderr, "couldn't set /memory/reg\n");
|
||||
|
||||
ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start",
|
||||
initrd_base);
|
||||
if (ret < 0)
|
||||
fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
|
||||
if (initrd_size) {
|
||||
ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start",
|
||||
initrd_base);
|
||||
if (ret < 0) {
|
||||
fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
|
||||
}
|
||||
|
||||
ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
|
||||
(initrd_base + initrd_size));
|
||||
if (ret < 0)
|
||||
fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
|
||||
ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
|
||||
(initrd_base + initrd_size));
|
||||
if (ret < 0) {
|
||||
fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
|
||||
}
|
||||
}
|
||||
|
||||
ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
|
||||
kernel_cmdline);
|
||||
@ -145,6 +156,13 @@ static int mpc8544_load_device_tree(target_phys_addr_t addr,
|
||||
|
||||
mpc8544_copy_soc_cell(fdt, buf, "clock-frequency");
|
||||
mpc8544_copy_soc_cell(fdt, buf, "timebase-frequency");
|
||||
} else {
|
||||
const uint32_t freq = 400000000;
|
||||
|
||||
qemu_devtree_setprop_cell(fdt, "/cpus/PowerPC,8544@0",
|
||||
"clock-frequency", freq);
|
||||
qemu_devtree_setprop_cell(fdt, "/cpus/PowerPC,8544@0",
|
||||
"timebase-frequency", freq);
|
||||
}
|
||||
|
||||
ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
|
||||
@ -156,6 +174,35 @@ out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Create -kernel TLB entries for BookE, linearly spanning 256MB. */
|
||||
static void mmubooke_create_initial_mapping(CPUState *env,
|
||||
target_ulong va,
|
||||
target_phys_addr_t pa)
|
||||
{
|
||||
ppcemb_tlb_t *tlb = &env->tlb[512].tlbe;
|
||||
|
||||
tlb->attr = 0;
|
||||
tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
|
||||
tlb->size = 256 * 1024 * 1024;
|
||||
tlb->EPN = va & TARGET_PAGE_MASK;
|
||||
tlb->RPN = pa & TARGET_PAGE_MASK;
|
||||
tlb->PID = 0;
|
||||
}
|
||||
|
||||
static void mpc8544ds_cpu_reset(void *opaque)
|
||||
{
|
||||
CPUState *env = opaque;
|
||||
struct boot_info *bi = env->load_info;
|
||||
|
||||
cpu_reset(env);
|
||||
|
||||
/* Set initial guest state. */
|
||||
env->gpr[1] = (16<<20) - 8;
|
||||
env->gpr[3] = bi->dt_base;
|
||||
env->nip = bi->entry;
|
||||
mmubooke_create_initial_mapping(env, 0, 0);
|
||||
}
|
||||
|
||||
static void mpc8544ds_init(ram_addr_t ram_size,
|
||||
const char *boot_device,
|
||||
const char *kernel_filename,
|
||||
@ -176,6 +223,7 @@ static void mpc8544ds_init(ram_addr_t ram_size,
|
||||
int i=0;
|
||||
unsigned int pci_irq_nrs[4] = {1, 2, 3, 4};
|
||||
qemu_irq *irqs, *mpic, *pci_irqs;
|
||||
struct boot_info *boot_info;
|
||||
|
||||
/* Setup CPU */
|
||||
if (cpu_model == NULL) {
|
||||
@ -188,6 +236,13 @@ static void mpc8544ds_init(ram_addr_t ram_size,
|
||||
exit(1);
|
||||
}
|
||||
|
||||
/* XXX register timer? */
|
||||
ppc_emb_timers_init(env, 400000000, PPC_INTERRUPT_DECR);
|
||||
ppc_dcr_init(env, NULL, NULL);
|
||||
|
||||
/* Register reset handler */
|
||||
qemu_register_reset(mpc8544ds_cpu_reset, env);
|
||||
|
||||
/* Fixup Memory size on a alignment boundary */
|
||||
ram_size &= ~(RAM_SIZES_ALIGN - 1);
|
||||
|
||||
@ -263,8 +318,13 @@ static void mpc8544ds_init(ram_addr_t ram_size,
|
||||
}
|
||||
}
|
||||
|
||||
boot_info = qemu_mallocz(sizeof(struct boot_info));
|
||||
|
||||
/* If we're loading a kernel directly, we must load the device tree too. */
|
||||
if (kernel_filename) {
|
||||
#ifndef CONFIG_FDT
|
||||
cpu_abort(env, "Compiled without FDT support - can't load kernel\n");
|
||||
#endif
|
||||
dt_base = (kernel_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK;
|
||||
if (mpc8544_load_device_tree(dt_base, ram_size,
|
||||
initrd_base, initrd_size, kernel_cmdline) < 0) {
|
||||
@ -272,17 +332,14 @@ static void mpc8544ds_init(ram_addr_t ram_size,
|
||||
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. */
|
||||
boot_info->entry = entry;
|
||||
boot_info->dt_base = dt_base;
|
||||
}
|
||||
env->load_info = boot_info;
|
||||
|
||||
if (kvm_enabled())
|
||||
if (kvm_enabled()) {
|
||||
kvmppc_init();
|
||||
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
static QEMUMachine mpc8544ds_machine = {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user