diff options
Diffstat (limited to 'hw/spapr_nvram.c')
| -rw-r--r-- | hw/spapr_nvram.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/hw/spapr_nvram.c b/hw/spapr_nvram.c deleted file mode 100644 index 680cdba928..0000000000 --- a/hw/spapr_nvram.c +++ /dev/null @@ -1,196 +0,0 @@ -/* - * QEMU sPAPR NVRAM emulation - * - * Copyright (C) 2012 David Gibson, IBM Corporation. - * - * 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 <libfdt.h> - -#include "sysemu/device_tree.h" -#include "hw/sysbus.h" -#include "hw/spapr.h" -#include "hw/spapr_vio.h" - -typedef struct sPAPRNVRAM { - VIOsPAPRDevice sdev; - uint32_t size; - uint8_t *buf; - BlockDriverState *drive; -} sPAPRNVRAM; - -#define MIN_NVRAM_SIZE 8192 -#define DEFAULT_NVRAM_SIZE 65536 -#define MAX_NVRAM_SIZE (UINT16_MAX * 16) - -static void rtas_nvram_fetch(sPAPREnvironment *spapr, - uint32_t token, uint32_t nargs, - target_ulong args, - uint32_t nret, target_ulong rets) -{ - sPAPRNVRAM *nvram = spapr->nvram; - hwaddr offset, buffer, len; - int alen; - void *membuf; - - if ((nargs != 3) || (nret != 2)) { - rtas_st(rets, 0, -3); - return; - } - - if (!nvram) { - rtas_st(rets, 0, -1); - rtas_st(rets, 1, 0); - return; - } - - offset = rtas_ld(args, 0); - buffer = rtas_ld(args, 1); - len = rtas_ld(args, 2); - - if (((offset + len) < offset) - || ((offset + len) > nvram->size)) { - rtas_st(rets, 0, -3); - rtas_st(rets, 1, 0); - return; - } - - membuf = cpu_physical_memory_map(buffer, &len, 1); - if (nvram->drive) { - alen = bdrv_pread(nvram->drive, offset, membuf, len); - } else { - assert(nvram->buf); - - memcpy(membuf, nvram->buf + offset, len); - alen = len; - } - cpu_physical_memory_unmap(membuf, len, 1, len); - - rtas_st(rets, 0, (alen < len) ? -1 : 0); - rtas_st(rets, 1, (alen < 0) ? 0 : alen); -} - -static void rtas_nvram_store(sPAPREnvironment *spapr, - uint32_t token, uint32_t nargs, - target_ulong args, - uint32_t nret, target_ulong rets) -{ - sPAPRNVRAM *nvram = spapr->nvram; - hwaddr offset, buffer, len; - int alen; - void *membuf; - - if ((nargs != 3) || (nret != 2)) { - rtas_st(rets, 0, -3); - return; - } - - if (!nvram) { - rtas_st(rets, 0, -1); - return; - } - - offset = rtas_ld(args, 0); - buffer = rtas_ld(args, 1); - len = rtas_ld(args, 2); - - if (((offset + len) < offset) - || ((offset + len) > nvram->size)) { - rtas_st(rets, 0, -3); - return; - } - - membuf = cpu_physical_memory_map(buffer, &len, 0); - if (nvram->drive) { - alen = bdrv_pwrite(nvram->drive, offset, membuf, len); - } else { - assert(nvram->buf); - - memcpy(nvram->buf + offset, membuf, len); - alen = len; - } - cpu_physical_memory_unmap(membuf, len, 0, len); - - rtas_st(rets, 0, (alen < len) ? -1 : 0); - rtas_st(rets, 1, (alen < 0) ? 0 : alen); -} - -static int spapr_nvram_init(VIOsPAPRDevice *dev) -{ - sPAPRNVRAM *nvram = (sPAPRNVRAM *)dev; - - if (nvram->drive) { - nvram->size = bdrv_getlength(nvram->drive); - } else { - nvram->size = DEFAULT_NVRAM_SIZE; - nvram->buf = g_malloc0(nvram->size); - } - - if ((nvram->size < MIN_NVRAM_SIZE) || (nvram->size > MAX_NVRAM_SIZE)) { - fprintf(stderr, "spapr-nvram must be between %d and %d bytes in size\n", - MIN_NVRAM_SIZE, MAX_NVRAM_SIZE); - return -1; - } - - spapr_rtas_register("nvram-fetch", rtas_nvram_fetch); - spapr_rtas_register("nvram-store", rtas_nvram_store); - - return 0; -} - -static int spapr_nvram_devnode(VIOsPAPRDevice *dev, void *fdt, int node_off) -{ - sPAPRNVRAM *nvram = (sPAPRNVRAM *)dev; - - return fdt_setprop_cell(fdt, node_off, "#bytes", nvram->size); -} - -static Property spapr_nvram_properties[] = { - DEFINE_SPAPR_PROPERTIES(sPAPRNVRAM, sdev), - DEFINE_PROP_DRIVE("drive", sPAPRNVRAM, drive), - DEFINE_PROP_END_OF_LIST(), -}; - -static void spapr_nvram_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - VIOsPAPRDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass); - - k->init = spapr_nvram_init; - k->devnode = spapr_nvram_devnode; - k->dt_name = "nvram"; - k->dt_type = "nvram"; - k->dt_compatible = "qemu,spapr-nvram"; - dc->props = spapr_nvram_properties; -} - -static const TypeInfo spapr_nvram_type_info = { - .name = "spapr-nvram", - .parent = TYPE_VIO_SPAPR_DEVICE, - .instance_size = sizeof(sPAPRNVRAM), - .class_init = spapr_nvram_class_init, -}; - -static void spapr_nvram_register_types(void) -{ - type_register_static(&spapr_nvram_type_info); -} - -type_init(spapr_nvram_register_types) |