diff options
Diffstat (limited to 'qemu/hw/nvram/fw_cfg.c')
| -rw-r--r-- | qemu/hw/nvram/fw_cfg.c | 1099 |
1 files changed, 0 insertions, 1099 deletions
diff --git a/qemu/hw/nvram/fw_cfg.c b/qemu/hw/nvram/fw_cfg.c deleted file mode 100644 index 999f48028..000000000 --- a/qemu/hw/nvram/fw_cfg.c +++ /dev/null @@ -1,1099 +0,0 @@ -/* - * QEMU Firmware configuration device emulation - * - * Copyright (c) 2008 Gleb Natapov - * - * 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 "qemu/osdep.h" -#include "hw/hw.h" -#include "sysemu/sysemu.h" -#include "sysemu/dma.h" -#include "hw/isa/isa.h" -#include "hw/nvram/fw_cfg.h" -#include "hw/sysbus.h" -#include "hw/boards.h" -#include "trace.h" -#include "qemu/error-report.h" -#include "qemu/config-file.h" -#include "qemu/cutils.h" - -#define FW_CFG_NAME "fw_cfg" -#define FW_CFG_PATH "/machine/" FW_CFG_NAME - -#define TYPE_FW_CFG "fw_cfg" -#define TYPE_FW_CFG_IO "fw_cfg_io" -#define TYPE_FW_CFG_MEM "fw_cfg_mem" - -#define FW_CFG(obj) OBJECT_CHECK(FWCfgState, (obj), TYPE_FW_CFG) -#define FW_CFG_IO(obj) OBJECT_CHECK(FWCfgIoState, (obj), TYPE_FW_CFG_IO) -#define FW_CFG_MEM(obj) OBJECT_CHECK(FWCfgMemState, (obj), TYPE_FW_CFG_MEM) - -/* FW_CFG_VERSION bits */ -#define FW_CFG_VERSION 0x01 -#define FW_CFG_VERSION_DMA 0x02 - -/* FW_CFG_DMA_CONTROL bits */ -#define FW_CFG_DMA_CTL_ERROR 0x01 -#define FW_CFG_DMA_CTL_READ 0x02 -#define FW_CFG_DMA_CTL_SKIP 0x04 -#define FW_CFG_DMA_CTL_SELECT 0x08 - -#define FW_CFG_DMA_SIGNATURE 0x51454d5520434647ULL /* "QEMU CFG" */ - -typedef struct FWCfgEntry { - uint32_t len; - uint8_t *data; - void *callback_opaque; - FWCfgReadCallback read_callback; -} FWCfgEntry; - -struct FWCfgState { - /*< private >*/ - SysBusDevice parent_obj; - /*< public >*/ - - FWCfgEntry entries[2][FW_CFG_MAX_ENTRY]; - int entry_order[FW_CFG_MAX_ENTRY]; - FWCfgFiles *files; - uint16_t cur_entry; - uint32_t cur_offset; - Notifier machine_ready; - - int fw_cfg_order_override; - - bool dma_enabled; - dma_addr_t dma_addr; - AddressSpace *dma_as; - MemoryRegion dma_iomem; -}; - -struct FWCfgIoState { - /*< private >*/ - FWCfgState parent_obj; - /*< public >*/ - - MemoryRegion comb_iomem; - uint32_t iobase, dma_iobase; -}; - -struct FWCfgMemState { - /*< private >*/ - FWCfgState parent_obj; - /*< public >*/ - - MemoryRegion ctl_iomem, data_iomem; - uint32_t data_width; - MemoryRegionOps wide_data_ops; -}; - -#define JPG_FILE 0 -#define BMP_FILE 1 - -static char *read_splashfile(char *filename, gsize *file_sizep, - int *file_typep) -{ - GError *err = NULL; - gboolean res; - gchar *content; - int file_type; - unsigned int filehead; - int bmp_bpp; - - res = g_file_get_contents(filename, &content, file_sizep, &err); - if (res == FALSE) { - error_report("failed to read splash file '%s'", filename); - g_error_free(err); - return NULL; - } - - /* check file size */ - if (*file_sizep < 30) { - goto error; - } - - /* check magic ID */ - filehead = ((content[0] & 0xff) + (content[1] << 8)) & 0xffff; - if (filehead == 0xd8ff) { - file_type = JPG_FILE; - } else if (filehead == 0x4d42) { - file_type = BMP_FILE; - } else { - goto error; - } - - /* check BMP bpp */ - if (file_type == BMP_FILE) { - bmp_bpp = (content[28] + (content[29] << 8)) & 0xffff; - if (bmp_bpp != 24) { - goto error; - } - } - - /* return values */ - *file_typep = file_type; - - return content; - -error: - error_report("splash file '%s' format not recognized; must be JPEG " - "or 24 bit BMP", filename); - g_free(content); - return NULL; -} - -static void fw_cfg_bootsplash(FWCfgState *s) -{ - int boot_splash_time = -1; - const char *boot_splash_filename = NULL; - char *p; - char *filename, *file_data; - gsize file_size; - int file_type; - const char *temp; - - /* get user configuration */ - QemuOptsList *plist = qemu_find_opts("boot-opts"); - QemuOpts *opts = QTAILQ_FIRST(&plist->head); - if (opts != NULL) { - temp = qemu_opt_get(opts, "splash"); - if (temp != NULL) { - boot_splash_filename = temp; - } - temp = qemu_opt_get(opts, "splash-time"); - if (temp != NULL) { - p = (char *)temp; - boot_splash_time = strtol(p, (char **)&p, 10); - } - } - - /* insert splash time if user configurated */ - if (boot_splash_time >= 0) { - /* validate the input */ - if (boot_splash_time > 0xffff) { - error_report("splash time is big than 65535, force it to 65535."); - boot_splash_time = 0xffff; - } - /* use little endian format */ - qemu_extra_params_fw[0] = (uint8_t)(boot_splash_time & 0xff); - qemu_extra_params_fw[1] = (uint8_t)((boot_splash_time >> 8) & 0xff); - fw_cfg_add_file(s, "etc/boot-menu-wait", qemu_extra_params_fw, 2); - } - - /* insert splash file if user configurated */ - if (boot_splash_filename != NULL) { - filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, boot_splash_filename); - if (filename == NULL) { - error_report("failed to find file '%s'.", boot_splash_filename); - return; - } - - /* loading file data */ - file_data = read_splashfile(filename, &file_size, &file_type); - if (file_data == NULL) { - g_free(filename); - return; - } - g_free(boot_splash_filedata); - boot_splash_filedata = (uint8_t *)file_data; - boot_splash_filedata_size = file_size; - - /* insert data */ - if (file_type == JPG_FILE) { - fw_cfg_add_file(s, "bootsplash.jpg", - boot_splash_filedata, boot_splash_filedata_size); - } else { - fw_cfg_add_file(s, "bootsplash.bmp", - boot_splash_filedata, boot_splash_filedata_size); - } - g_free(filename); - } -} - -static void fw_cfg_reboot(FWCfgState *s) -{ - int reboot_timeout = -1; - char *p; - const char *temp; - - /* get user configuration */ - QemuOptsList *plist = qemu_find_opts("boot-opts"); - QemuOpts *opts = QTAILQ_FIRST(&plist->head); - if (opts != NULL) { - temp = qemu_opt_get(opts, "reboot-timeout"); - if (temp != NULL) { - p = (char *)temp; - reboot_timeout = strtol(p, (char **)&p, 10); - } - } - /* validate the input */ - if (reboot_timeout > 0xffff) { - error_report("reboot timeout is larger than 65535, force it to 65535."); - reboot_timeout = 0xffff; - } - fw_cfg_add_file(s, "etc/boot-fail-wait", g_memdup(&reboot_timeout, 4), 4); -} - -static void fw_cfg_write(FWCfgState *s, uint8_t value) -{ - /* nothing, write support removed in QEMU v2.4+ */ -} - -static int fw_cfg_select(FWCfgState *s, uint16_t key) -{ - int arch, ret; - FWCfgEntry *e; - - s->cur_offset = 0; - if ((key & FW_CFG_ENTRY_MASK) >= FW_CFG_MAX_ENTRY) { - s->cur_entry = FW_CFG_INVALID; - ret = 0; - } else { - s->cur_entry = key; - ret = 1; - /* entry successfully selected, now run callback if present */ - arch = !!(key & FW_CFG_ARCH_LOCAL); - e = &s->entries[arch][key & FW_CFG_ENTRY_MASK]; - if (e->read_callback) { - e->read_callback(e->callback_opaque); - } - } - - trace_fw_cfg_select(s, key, ret); - return ret; -} - -static uint64_t fw_cfg_data_read(void *opaque, hwaddr addr, unsigned size) -{ - FWCfgState *s = opaque; - int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL); - FWCfgEntry *e = (s->cur_entry == FW_CFG_INVALID) ? NULL : - &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK]; - uint64_t value = 0; - - assert(size > 0 && size <= sizeof(value)); - if (s->cur_entry != FW_CFG_INVALID && e->data && s->cur_offset < e->len) { - /* The least significant 'size' bytes of the return value are - * expected to contain a string preserving portion of the item - * data, padded with zeros on the right in case we run out early. - * In technical terms, we're composing the host-endian representation - * of the big endian interpretation of the fw_cfg string. - */ - do { - value = (value << 8) | e->data[s->cur_offset++]; - } while (--size && s->cur_offset < e->len); - /* If size is still not zero, we *did* run out early, so continue - * left-shifting, to add the appropriate number of padding zeros - * on the right. - */ - value <<= 8 * size; - } - - trace_fw_cfg_read(s, value); - return value; -} - -static void fw_cfg_data_mem_write(void *opaque, hwaddr addr, - uint64_t value, unsigned size) -{ - FWCfgState *s = opaque; - unsigned i = size; - - do { - fw_cfg_write(s, value >> (8 * --i)); - } while (i); -} - -static void fw_cfg_dma_transfer(FWCfgState *s) -{ - dma_addr_t len; - FWCfgDmaAccess dma; - int arch; - FWCfgEntry *e; - int read; - dma_addr_t dma_addr; - - /* Reset the address before the next access */ - dma_addr = s->dma_addr; - s->dma_addr = 0; - - if (dma_memory_read(s->dma_as, dma_addr, &dma, sizeof(dma))) { - stl_be_dma(s->dma_as, dma_addr + offsetof(FWCfgDmaAccess, control), - FW_CFG_DMA_CTL_ERROR); - return; - } - - dma.address = be64_to_cpu(dma.address); - dma.length = be32_to_cpu(dma.length); - dma.control = be32_to_cpu(dma.control); - - if (dma.control & FW_CFG_DMA_CTL_SELECT) { - fw_cfg_select(s, dma.control >> 16); - } - - arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL); - e = (s->cur_entry == FW_CFG_INVALID) ? NULL : - &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK]; - - if (dma.control & FW_CFG_DMA_CTL_READ) { - read = 1; - } else if (dma.control & FW_CFG_DMA_CTL_SKIP) { - read = 0; - } else { - dma.length = 0; - } - - dma.control = 0; - - while (dma.length > 0 && !(dma.control & FW_CFG_DMA_CTL_ERROR)) { - if (s->cur_entry == FW_CFG_INVALID || !e->data || - s->cur_offset >= e->len) { - len = dma.length; - - /* If the access is not a read access, it will be a skip access, - * tested before. - */ - if (read) { - if (dma_memory_set(s->dma_as, dma.address, 0, len)) { - dma.control |= FW_CFG_DMA_CTL_ERROR; - } - } - - } else { - if (dma.length <= (e->len - s->cur_offset)) { - len = dma.length; - } else { - len = (e->len - s->cur_offset); - } - - /* If the access is not a read access, it will be a skip access, - * tested before. - */ - if (read) { - if (dma_memory_write(s->dma_as, dma.address, - &e->data[s->cur_offset], len)) { - dma.control |= FW_CFG_DMA_CTL_ERROR; - } - } - - s->cur_offset += len; - } - - dma.address += len; - dma.length -= len; - - } - - stl_be_dma(s->dma_as, dma_addr + offsetof(FWCfgDmaAccess, control), - dma.control); - - trace_fw_cfg_read(s, 0); -} - -static uint64_t fw_cfg_dma_mem_read(void *opaque, hwaddr addr, - unsigned size) -{ - /* Return a signature value (and handle various read sizes) */ - return extract64(FW_CFG_DMA_SIGNATURE, (8 - addr - size) * 8, size * 8); -} - -static void fw_cfg_dma_mem_write(void *opaque, hwaddr addr, - uint64_t value, unsigned size) -{ - FWCfgState *s = opaque; - - if (size == 4) { - if (addr == 0) { - /* FWCfgDmaAccess high address */ - s->dma_addr = value << 32; - } else if (addr == 4) { - /* FWCfgDmaAccess low address */ - s->dma_addr |= value; - fw_cfg_dma_transfer(s); - } - } else if (size == 8 && addr == 0) { - s->dma_addr = value; - fw_cfg_dma_transfer(s); - } -} - -static bool fw_cfg_dma_mem_valid(void *opaque, hwaddr addr, - unsigned size, bool is_write) -{ - return !is_write || ((size == 4 && (addr == 0 || addr == 4)) || - (size == 8 && addr == 0)); -} - -static bool fw_cfg_data_mem_valid(void *opaque, hwaddr addr, - unsigned size, bool is_write) -{ - return addr == 0; -} - -static void fw_cfg_ctl_mem_write(void *opaque, hwaddr addr, - uint64_t value, unsigned size) -{ - fw_cfg_select(opaque, (uint16_t)value); -} - -static bool fw_cfg_ctl_mem_valid(void *opaque, hwaddr addr, - unsigned size, bool is_write) -{ - return is_write && size == 2; -} - -static void fw_cfg_comb_write(void *opaque, hwaddr addr, - uint64_t value, unsigned size) -{ - switch (size) { - case 1: - fw_cfg_write(opaque, (uint8_t)value); - break; - case 2: - fw_cfg_select(opaque, (uint16_t)value); - break; - } -} - -static bool fw_cfg_comb_valid(void *opaque, hwaddr addr, - unsigned size, bool is_write) -{ - return (size == 1) || (is_write && size == 2); -} - -static const MemoryRegionOps fw_cfg_ctl_mem_ops = { - .write = fw_cfg_ctl_mem_write, - .endianness = DEVICE_BIG_ENDIAN, - .valid.accepts = fw_cfg_ctl_mem_valid, -}; - -static const MemoryRegionOps fw_cfg_data_mem_ops = { - .read = fw_cfg_data_read, - .write = fw_cfg_data_mem_write, - .endianness = DEVICE_BIG_ENDIAN, - .valid = { - .min_access_size = 1, - .max_access_size = 1, - .accepts = fw_cfg_data_mem_valid, - }, -}; - -static const MemoryRegionOps fw_cfg_comb_mem_ops = { - .read = fw_cfg_data_read, - .write = fw_cfg_comb_write, - .endianness = DEVICE_LITTLE_ENDIAN, - .valid.accepts = fw_cfg_comb_valid, -}; - -static const MemoryRegionOps fw_cfg_dma_mem_ops = { - .read = fw_cfg_dma_mem_read, - .write = fw_cfg_dma_mem_write, - .endianness = DEVICE_BIG_ENDIAN, - .valid.accepts = fw_cfg_dma_mem_valid, - .valid.max_access_size = 8, - .impl.max_access_size = 8, -}; - -static void fw_cfg_reset(DeviceState *d) -{ - FWCfgState *s = FW_CFG(d); - - /* we never register a read callback for FW_CFG_SIGNATURE */ - fw_cfg_select(s, FW_CFG_SIGNATURE); -} - -/* Save restore 32 bit int as uint16_t - This is a Big hack, but it is how the old state did it. - Or we broke compatibility in the state, or we can't use struct tm - */ - -static int get_uint32_as_uint16(QEMUFile *f, void *pv, size_t size) -{ - uint32_t *v = pv; - *v = qemu_get_be16(f); - return 0; -} - -static void put_unused(QEMUFile *f, void *pv, size_t size) -{ - fprintf(stderr, "uint32_as_uint16 is only used for backward compatibility.\n"); - fprintf(stderr, "This functions shouldn't be called.\n"); -} - -static const VMStateInfo vmstate_hack_uint32_as_uint16 = { - .name = "int32_as_uint16", - .get = get_uint32_as_uint16, - .put = put_unused, -}; - -#define VMSTATE_UINT16_HACK(_f, _s, _t) \ - VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_hack_uint32_as_uint16, uint32_t) - - -static bool is_version_1(void *opaque, int version_id) -{ - return version_id == 1; -} - -static bool fw_cfg_dma_enabled(void *opaque) -{ - FWCfgState *s = opaque; - - return s->dma_enabled; -} - -static const VMStateDescription vmstate_fw_cfg_dma = { - .name = "fw_cfg/dma", - .needed = fw_cfg_dma_enabled, - .fields = (VMStateField[]) { - VMSTATE_UINT64(dma_addr, FWCfgState), - VMSTATE_END_OF_LIST() - }, -}; - -static const VMStateDescription vmstate_fw_cfg = { - .name = "fw_cfg", - .version_id = 2, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT16(cur_entry, FWCfgState), - VMSTATE_UINT16_HACK(cur_offset, FWCfgState, is_version_1), - VMSTATE_UINT32_V(cur_offset, FWCfgState, 2), - VMSTATE_END_OF_LIST() - }, - .subsections = (const VMStateDescription*[]) { - &vmstate_fw_cfg_dma, - NULL, - } -}; - -static void fw_cfg_add_bytes_read_callback(FWCfgState *s, uint16_t key, - FWCfgReadCallback callback, - void *callback_opaque, - void *data, size_t len) -{ - int arch = !!(key & FW_CFG_ARCH_LOCAL); - - key &= FW_CFG_ENTRY_MASK; - - assert(key < FW_CFG_MAX_ENTRY && len < UINT32_MAX); - assert(s->entries[arch][key].data == NULL); /* avoid key conflict */ - - s->entries[arch][key].data = data; - s->entries[arch][key].len = (uint32_t)len; - s->entries[arch][key].read_callback = callback; - s->entries[arch][key].callback_opaque = callback_opaque; -} - -static void *fw_cfg_modify_bytes_read(FWCfgState *s, uint16_t key, - void *data, size_t len) -{ - void *ptr; - int arch = !!(key & FW_CFG_ARCH_LOCAL); - - key &= FW_CFG_ENTRY_MASK; - - assert(key < FW_CFG_MAX_ENTRY && len < UINT32_MAX); - - /* return the old data to the function caller, avoid memory leak */ - ptr = s->entries[arch][key].data; - s->entries[arch][key].data = data; - s->entries[arch][key].len = len; - s->entries[arch][key].callback_opaque = NULL; - - return ptr; -} - -void fw_cfg_add_bytes(FWCfgState *s, uint16_t key, void *data, size_t len) -{ - fw_cfg_add_bytes_read_callback(s, key, NULL, NULL, data, len); -} - -void fw_cfg_add_string(FWCfgState *s, uint16_t key, const char *value) -{ - size_t sz = strlen(value) + 1; - - fw_cfg_add_bytes(s, key, g_memdup(value, sz), sz); -} - -void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value) -{ - uint16_t *copy; - - copy = g_malloc(sizeof(value)); - *copy = cpu_to_le16(value); - fw_cfg_add_bytes(s, key, copy, sizeof(value)); -} - -void fw_cfg_modify_i16(FWCfgState *s, uint16_t key, uint16_t value) -{ - uint16_t *copy, *old; - - copy = g_malloc(sizeof(value)); - *copy = cpu_to_le16(value); - old = fw_cfg_modify_bytes_read(s, key, copy, sizeof(value)); - g_free(old); -} - -void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value) -{ - uint32_t *copy; - - copy = g_malloc(sizeof(value)); - *copy = cpu_to_le32(value); - fw_cfg_add_bytes(s, key, copy, sizeof(value)); -} - -void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value) -{ - uint64_t *copy; - - copy = g_malloc(sizeof(value)); - *copy = cpu_to_le64(value); - fw_cfg_add_bytes(s, key, copy, sizeof(value)); -} - -void fw_cfg_set_order_override(FWCfgState *s, int order) -{ - assert(s->fw_cfg_order_override == 0); - s->fw_cfg_order_override = order; -} - -void fw_cfg_reset_order_override(FWCfgState *s) -{ - assert(s->fw_cfg_order_override != 0); - s->fw_cfg_order_override = 0; -} - -/* - * This is the legacy order list. For legacy systems, files are in - * the fw_cfg in the order defined below, by the "order" value. Note - * that some entries (VGA ROMs, NIC option ROMS, etc.) go into a - * specific area, but there may be more than one and they occur in the - * order that the user specifies them on the command line. Those are - * handled in a special manner, using the order override above. - * - * For non-legacy, the files are sorted by filename to avoid this kind - * of complexity in the future. - * - * This is only for x86, other arches don't implement versioning so - * they won't set legacy mode. - */ -static struct { - const char *name; - int order; -} fw_cfg_order[] = { - { "etc/boot-menu-wait", 10 }, - { "bootsplash.jpg", 11 }, - { "bootsplash.bmp", 12 }, - { "etc/boot-fail-wait", 15 }, - { "etc/smbios/smbios-tables", 20 }, - { "etc/smbios/smbios-anchor", 30 }, - { "etc/e820", 40 }, - { "etc/reserved-memory-end", 50 }, - { "genroms/kvmvapic.bin", 55 }, - { "genroms/linuxboot.bin", 60 }, - { }, /* VGA ROMs from pc_vga_init come here, 70. */ - { }, /* NIC option ROMs from pc_nic_init come here, 80. */ - { "etc/system-states", 90 }, - { }, /* User ROMs come here, 100. */ - { }, /* Device FW comes here, 110. */ - { "etc/extra-pci-roots", 120 }, - { "etc/acpi/tables", 130 }, - { "etc/table-loader", 140 }, - { "etc/tpm/log", 150 }, - { "etc/acpi/rsdp", 160 }, - { "bootorder", 170 }, - -#define FW_CFG_ORDER_OVERRIDE_LAST 200 -}; - -static int get_fw_cfg_order(FWCfgState *s, const char *name) -{ - int i; - - if (s->fw_cfg_order_override > 0) - return s->fw_cfg_order_override; - - for (i = 0; i < ARRAY_SIZE(fw_cfg_order); i++) { - if (fw_cfg_order[i].name == NULL) - continue; - if (strcmp(name, fw_cfg_order[i].name) == 0) - return fw_cfg_order[i].order; - } - /* Stick unknown stuff at the end. */ - error_report("warning: Unknown firmware file in legacy mode: %s\n", name); - return FW_CFG_ORDER_OVERRIDE_LAST; -} - -void fw_cfg_add_file_callback(FWCfgState *s, const char *filename, - FWCfgReadCallback callback, void *callback_opaque, - void *data, size_t len) -{ - int i, index, count; - size_t dsize; - MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); - int order = 0; - - if (!s->files) { - dsize = sizeof(uint32_t) + sizeof(FWCfgFile) * FW_CFG_FILE_SLOTS; - s->files = g_malloc0(dsize); - fw_cfg_add_bytes(s, FW_CFG_FILE_DIR, s->files, dsize); - } - - count = be32_to_cpu(s->files->count); - assert(count < FW_CFG_FILE_SLOTS); - - /* Find the insertion point. */ - if (mc->legacy_fw_cfg_order) { - /* - * Sort by order. For files with the same order, we keep them - * in the sequence in which they were added. - */ - order = get_fw_cfg_order(s, filename); - for (index = count; - index > 0 && order < s->entry_order[index - 1]; - index--); - } else { - /* Sort by file name. */ - for (index = count; - index > 0 && strcmp(filename, s->files->f[index - 1].name) < 0; - index--); - } - - /* - * Move all the entries from the index point and after down one - * to create a slot for the new entry. Because calculations are - * being done with the index, make it so that "i" is the current - * index and "i - 1" is the one being copied from, thus the - * unusual start and end in the for statement. - */ - for (i = count + 1; i > index; i--) { - s->files->f[i] = s->files->f[i - 1]; - s->files->f[i].select = cpu_to_be16(FW_CFG_FILE_FIRST + i); - s->entries[0][FW_CFG_FILE_FIRST + i] = - s->entries[0][FW_CFG_FILE_FIRST + i - 1]; - s->entry_order[i] = s->entry_order[i - 1]; - } - - memset(&s->files->f[index], 0, sizeof(FWCfgFile)); - memset(&s->entries[0][FW_CFG_FILE_FIRST + index], 0, sizeof(FWCfgEntry)); - - pstrcpy(s->files->f[index].name, sizeof(s->files->f[index].name), filename); - for (i = 0; i <= count; i++) { - if (i != index && - strcmp(s->files->f[index].name, s->files->f[i].name) == 0) { - error_report("duplicate fw_cfg file name: %s", - s->files->f[index].name); - exit(1); - } - } - - fw_cfg_add_bytes_read_callback(s, FW_CFG_FILE_FIRST + index, - callback, callback_opaque, data, len); - - s->files->f[index].size = cpu_to_be32(len); - s->files->f[index].select = cpu_to_be16(FW_CFG_FILE_FIRST + index); - s->entry_order[index] = order; - trace_fw_cfg_add_file(s, index, s->files->f[index].name, len); - - s->files->count = cpu_to_be32(count+1); -} - -void fw_cfg_add_file(FWCfgState *s, const char *filename, - void *data, size_t len) -{ - fw_cfg_add_file_callback(s, filename, NULL, NULL, data, len); -} - -void *fw_cfg_modify_file(FWCfgState *s, const char *filename, - void *data, size_t len) -{ - int i, index; - void *ptr = NULL; - - assert(s->files); - - index = be32_to_cpu(s->files->count); - assert(index < FW_CFG_FILE_SLOTS); - - for (i = 0; i < index; i++) { - if (strcmp(filename, s->files->f[i].name) == 0) { - ptr = fw_cfg_modify_bytes_read(s, FW_CFG_FILE_FIRST + i, - data, len); - s->files->f[i].size = cpu_to_be32(len); - return ptr; - } - } - /* add new one */ - fw_cfg_add_file_callback(s, filename, NULL, NULL, data, len); - return NULL; -} - -static void fw_cfg_machine_reset(void *opaque) -{ - void *ptr; - size_t len; - FWCfgState *s = opaque; - char *bootindex = get_boot_devices_list(&len, false); - - ptr = fw_cfg_modify_file(s, "bootorder", (uint8_t *)bootindex, len); - g_free(ptr); -} - -static void fw_cfg_machine_ready(struct Notifier *n, void *data) -{ - FWCfgState *s = container_of(n, FWCfgState, machine_ready); - qemu_register_reset(fw_cfg_machine_reset, s); -} - - - -static void fw_cfg_init1(DeviceState *dev) -{ - FWCfgState *s = FW_CFG(dev); - - assert(!object_resolve_path(FW_CFG_PATH, NULL)); - - object_property_add_child(qdev_get_machine(), FW_CFG_NAME, OBJECT(s), NULL); - - qdev_init_nofail(dev); - - fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (char *)"QEMU", 4); - fw_cfg_add_bytes(s, FW_CFG_UUID, qemu_uuid, 16); - fw_cfg_add_i16(s, FW_CFG_NOGRAPHIC, (uint16_t)(display_type == DT_NOGRAPHIC)); - fw_cfg_add_i16(s, FW_CFG_NB_CPUS, (uint16_t)smp_cpus); - fw_cfg_add_i16(s, FW_CFG_BOOT_MENU, (uint16_t)boot_menu); - fw_cfg_bootsplash(s); - fw_cfg_reboot(s); - - s->machine_ready.notify = fw_cfg_machine_ready; - qemu_add_machine_init_done_notifier(&s->machine_ready); -} - -FWCfgState *fw_cfg_init_io_dma(uint32_t iobase, uint32_t dma_iobase, - AddressSpace *dma_as) -{ - DeviceState *dev; - FWCfgState *s; - uint32_t version = FW_CFG_VERSION; - bool dma_requested = dma_iobase && dma_as; - - dev = qdev_create(NULL, TYPE_FW_CFG_IO); - qdev_prop_set_uint32(dev, "iobase", iobase); - qdev_prop_set_uint32(dev, "dma_iobase", dma_iobase); - if (!dma_requested) { - qdev_prop_set_bit(dev, "dma_enabled", false); - } - - fw_cfg_init1(dev); - s = FW_CFG(dev); - - if (s->dma_enabled) { - /* 64 bits for the address field */ - s->dma_as = dma_as; - s->dma_addr = 0; - - version |= FW_CFG_VERSION_DMA; - } - - fw_cfg_add_i32(s, FW_CFG_ID, version); - - return s; -} - -FWCfgState *fw_cfg_init_io(uint32_t iobase) -{ - return fw_cfg_init_io_dma(iobase, 0, NULL); -} - -FWCfgState *fw_cfg_init_mem_wide(hwaddr ctl_addr, - hwaddr data_addr, uint32_t data_width, - hwaddr dma_addr, AddressSpace *dma_as) -{ - DeviceState *dev; - SysBusDevice *sbd; - FWCfgState *s; - uint32_t version = FW_CFG_VERSION; - bool dma_requested = dma_addr && dma_as; - - dev = qdev_create(NULL, TYPE_FW_CFG_MEM); - qdev_prop_set_uint32(dev, "data_width", data_width); - if (!dma_requested) { - qdev_prop_set_bit(dev, "dma_enabled", false); - } - - fw_cfg_init1(dev); - - sbd = SYS_BUS_DEVICE(dev); - sysbus_mmio_map(sbd, 0, ctl_addr); - sysbus_mmio_map(sbd, 1, data_addr); - - s = FW_CFG(dev); - - if (s->dma_enabled) { - s->dma_as = dma_as; - s->dma_addr = 0; - sysbus_mmio_map(sbd, 2, dma_addr); - version |= FW_CFG_VERSION_DMA; - } - - fw_cfg_add_i32(s, FW_CFG_ID, version); - - return s; -} - -FWCfgState *fw_cfg_init_mem(hwaddr ctl_addr, hwaddr data_addr) -{ - return fw_cfg_init_mem_wide(ctl_addr, data_addr, - fw_cfg_data_mem_ops.valid.max_access_size, - 0, NULL); -} - - -FWCfgState *fw_cfg_find(void) -{ - return FW_CFG(object_resolve_path(FW_CFG_PATH, NULL)); -} - -static void fw_cfg_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - - dc->reset = fw_cfg_reset; - dc->vmsd = &vmstate_fw_cfg; -} - -static const TypeInfo fw_cfg_info = { - .name = TYPE_FW_CFG, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(FWCfgState), - .class_init = fw_cfg_class_init, -}; - - -static Property fw_cfg_io_properties[] = { - DEFINE_PROP_UINT32("iobase", FWCfgIoState, iobase, -1), - DEFINE_PROP_UINT32("dma_iobase", FWCfgIoState, dma_iobase, -1), - DEFINE_PROP_BOOL("dma_enabled", FWCfgIoState, parent_obj.dma_enabled, - true), - DEFINE_PROP_END_OF_LIST(), -}; - -static void fw_cfg_io_realize(DeviceState *dev, Error **errp) -{ - FWCfgIoState *s = FW_CFG_IO(dev); - SysBusDevice *sbd = SYS_BUS_DEVICE(dev); - - /* when using port i/o, the 8-bit data register ALWAYS overlaps - * with half of the 16-bit control register. Hence, the total size - * of the i/o region used is FW_CFG_CTL_SIZE */ - memory_region_init_io(&s->comb_iomem, OBJECT(s), &fw_cfg_comb_mem_ops, - FW_CFG(s), "fwcfg", FW_CFG_CTL_SIZE); - sysbus_add_io(sbd, s->iobase, &s->comb_iomem); - - if (FW_CFG(s)->dma_enabled) { - memory_region_init_io(&FW_CFG(s)->dma_iomem, OBJECT(s), - &fw_cfg_dma_mem_ops, FW_CFG(s), "fwcfg.dma", - sizeof(dma_addr_t)); - sysbus_add_io(sbd, s->dma_iobase, &FW_CFG(s)->dma_iomem); - } -} - -static void fw_cfg_io_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - - dc->realize = fw_cfg_io_realize; - dc->props = fw_cfg_io_properties; -} - -static const TypeInfo fw_cfg_io_info = { - .name = TYPE_FW_CFG_IO, - .parent = TYPE_FW_CFG, - .instance_size = sizeof(FWCfgIoState), - .class_init = fw_cfg_io_class_init, -}; - - -static Property fw_cfg_mem_properties[] = { - DEFINE_PROP_UINT32("data_width", FWCfgMemState, data_width, -1), - DEFINE_PROP_BOOL("dma_enabled", FWCfgMemState, parent_obj.dma_enabled, - true), - DEFINE_PROP_END_OF_LIST(), -}; - -static void fw_cfg_mem_realize(DeviceState *dev, Error **errp) -{ - FWCfgMemState *s = FW_CFG_MEM(dev); - SysBusDevice *sbd = SYS_BUS_DEVICE(dev); - const MemoryRegionOps *data_ops = &fw_cfg_data_mem_ops; - - memory_region_init_io(&s->ctl_iomem, OBJECT(s), &fw_cfg_ctl_mem_ops, - FW_CFG(s), "fwcfg.ctl", FW_CFG_CTL_SIZE); - sysbus_init_mmio(sbd, &s->ctl_iomem); - - if (s->data_width > data_ops->valid.max_access_size) { - /* memberwise copy because the "old_mmio" member is const */ - s->wide_data_ops.read = data_ops->read; - s->wide_data_ops.write = data_ops->write; - s->wide_data_ops.endianness = data_ops->endianness; - s->wide_data_ops.valid = data_ops->valid; - s->wide_data_ops.impl = data_ops->impl; - - s->wide_data_ops.valid.max_access_size = s->data_width; - s->wide_data_ops.impl.max_access_size = s->data_width; - data_ops = &s->wide_data_ops; - } - memory_region_init_io(&s->data_iomem, OBJECT(s), data_ops, FW_CFG(s), - "fwcfg.data", data_ops->valid.max_access_size); - sysbus_init_mmio(sbd, &s->data_iomem); - - if (FW_CFG(s)->dma_enabled) { - memory_region_init_io(&FW_CFG(s)->dma_iomem, OBJECT(s), - &fw_cfg_dma_mem_ops, FW_CFG(s), "fwcfg.dma", - sizeof(dma_addr_t)); - sysbus_init_mmio(sbd, &FW_CFG(s)->dma_iomem); - } -} - -static void fw_cfg_mem_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - - dc->realize = fw_cfg_mem_realize; - dc->props = fw_cfg_mem_properties; -} - -static const TypeInfo fw_cfg_mem_info = { - .name = TYPE_FW_CFG_MEM, - .parent = TYPE_FW_CFG, - .instance_size = sizeof(FWCfgMemState), - .class_init = fw_cfg_mem_class_init, -}; - - -static void fw_cfg_register_types(void) -{ - type_register_static(&fw_cfg_info); - type_register_static(&fw_cfg_io_info); - type_register_static(&fw_cfg_mem_info); -} - -type_init(fw_cfg_register_types) |