diff options
Diffstat (limited to 'hw/ppc/e500.c')
-rw-r--r-- | hw/ppc/e500.c | 52 |
1 files changed, 43 insertions, 9 deletions
diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c index e79612b0e9..9059ff9bc7 100644 --- a/hw/ppc/e500.c +++ b/hw/ppc/e500.c @@ -123,13 +123,14 @@ static void dt_serial_create(void *fdt, unsigned long long offset, } } -static int ppce500_load_device_tree(CPUPPCState *env, - QEMUMachineInitArgs *args, +static int ppce500_load_device_tree(QEMUMachineInitArgs *args, PPCE500Params *params, hwaddr addr, hwaddr initrd_base, - hwaddr initrd_size) + hwaddr initrd_size, + bool dry_run) { + CPUPPCState *env = first_cpu->env_ptr; int ret = -1; uint64_t mem_reg_property[] = { 0, cpu_to_be64(args->ram_size) }; int fdt_size; @@ -369,12 +370,10 @@ static int ppce500_load_device_tree(CPUPPCState *env, } done: - qemu_devtree_dumpdtb(fdt, fdt_size); - ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr); - if (ret < 0) { - goto out; + if (!dry_run) { + qemu_devtree_dumpdtb(fdt, fdt_size); + cpu_physical_memory_write(addr, fdt, fdt_size); } - g_free(fdt); ret = fdt_size; out: @@ -383,6 +382,41 @@ out: return ret; } +typedef struct DeviceTreeParams { + QEMUMachineInitArgs args; + PPCE500Params params; + hwaddr addr; + hwaddr initrd_base; + hwaddr initrd_size; +} DeviceTreeParams; + +static void ppce500_reset_device_tree(void *opaque) +{ + DeviceTreeParams *p = opaque; + ppce500_load_device_tree(&p->args, &p->params, p->addr, p->initrd_base, + p->initrd_size, false); +} + +static int ppce500_prep_device_tree(QEMUMachineInitArgs *args, + PPCE500Params *params, + hwaddr addr, + hwaddr initrd_base, + hwaddr initrd_size) +{ + DeviceTreeParams *p = g_new(DeviceTreeParams, 1); + p->args = *args; + p->params = *params; + p->addr = addr; + p->initrd_base = initrd_base; + p->initrd_size = initrd_size; + + qemu_register_reset(ppce500_reset_device_tree, p); + + /* Issue the device tree loader once, so that we get the size of the blob */ + return ppce500_load_device_tree(args, params, addr, initrd_base, + initrd_size, true); +} + /* Create -kernel TLB entries for BookE. */ static inline hwaddr booke206_page_size_to_tlb(uint64_t size) { @@ -746,7 +780,7 @@ void ppce500_init(QEMUMachineInitArgs *args, PPCE500Params *params) struct boot_info *boot_info; int dt_size; - dt_size = ppce500_load_device_tree(env, args, params, dt_base, + dt_size = ppce500_prep_device_tree(args, params, dt_base, initrd_base, initrd_size); if (dt_size < 0) { fprintf(stderr, "couldn't load device tree\n"); |