Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Pavel Borzenkov <pavel.borzenkov@gmail.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
534 lines
15 KiB
C
534 lines
15 KiB
C
/*
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* QEMU Firmware configuration device emulation
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*
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* Copyright (c) 2008 Gleb Natapov
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h"
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#include "sysemu.h"
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#include "isa.h"
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#include "fw_cfg.h"
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#include "sysbus.h"
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#include "qemu-error.h"
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/* debug firmware config */
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//#define DEBUG_FW_CFG
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#ifdef DEBUG_FW_CFG
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#define FW_CFG_DPRINTF(fmt, ...) \
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do { printf("FW_CFG: " fmt , ## __VA_ARGS__); } while (0)
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#else
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#define FW_CFG_DPRINTF(fmt, ...)
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#endif
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#define FW_CFG_SIZE 2
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typedef struct FWCfgEntry {
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uint32_t len;
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uint8_t *data;
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void *callback_opaque;
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FWCfgCallback callback;
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} FWCfgEntry;
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struct FWCfgState {
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SysBusDevice busdev;
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uint32_t ctl_iobase, data_iobase;
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FWCfgEntry entries[2][FW_CFG_MAX_ENTRY];
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FWCfgFiles *files;
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uint16_t cur_entry;
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uint32_t cur_offset;
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Notifier machine_ready;
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};
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#define JPG_FILE 0
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#define BMP_FILE 1
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static char *read_splashfile(char *filename, int *file_sizep, int *file_typep)
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{
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GError *err = NULL;
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gboolean res;
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gchar *content;
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int file_type = -1;
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unsigned int filehead = 0;
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int bmp_bpp;
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res = g_file_get_contents(filename, &content, (gsize *)file_sizep, &err);
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if (res == FALSE) {
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error_report("failed to read splash file '%s'", filename);
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g_error_free(err);
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return NULL;
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}
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/* check file size */
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if (*file_sizep < 30) {
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goto error;
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}
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/* check magic ID */
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filehead = ((content[0] & 0xff) + (content[1] << 8)) & 0xffff;
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if (filehead == 0xd8ff) {
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file_type = JPG_FILE;
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} else if (filehead == 0x4d42) {
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file_type = BMP_FILE;
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} else {
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goto error;
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}
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/* check BMP bpp */
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if (file_type == BMP_FILE) {
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bmp_bpp = (content[28] + (content[29] << 8)) & 0xffff;
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if (bmp_bpp != 24) {
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goto error;
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}
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}
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/* return values */
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*file_typep = file_type;
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return content;
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error:
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error_report("splash file '%s' format not recognized; must be JPEG "
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"or 24 bit BMP", filename);
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g_free(content);
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return NULL;
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}
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static void fw_cfg_bootsplash(FWCfgState *s)
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{
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int boot_splash_time = -1;
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const char *boot_splash_filename = NULL;
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char *p;
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char *filename, *file_data;
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int file_size;
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int file_type = -1;
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const char *temp;
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/* get user configuration */
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QemuOptsList *plist = qemu_find_opts("boot-opts");
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QemuOpts *opts = QTAILQ_FIRST(&plist->head);
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if (opts != NULL) {
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temp = qemu_opt_get(opts, "splash");
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if (temp != NULL) {
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boot_splash_filename = temp;
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}
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temp = qemu_opt_get(opts, "splash-time");
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if (temp != NULL) {
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p = (char *)temp;
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boot_splash_time = strtol(p, (char **)&p, 10);
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}
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}
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/* insert splash time if user configurated */
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if (boot_splash_time >= 0) {
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/* validate the input */
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if (boot_splash_time > 0xffff) {
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error_report("splash time is big than 65535, force it to 65535.");
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boot_splash_time = 0xffff;
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}
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/* use little endian format */
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qemu_extra_params_fw[0] = (uint8_t)(boot_splash_time & 0xff);
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qemu_extra_params_fw[1] = (uint8_t)((boot_splash_time >> 8) & 0xff);
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fw_cfg_add_file(s, "etc/boot-menu-wait", qemu_extra_params_fw, 2);
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}
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/* insert splash file if user configurated */
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if (boot_splash_filename != NULL) {
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filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, boot_splash_filename);
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if (filename == NULL) {
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error_report("failed to find file '%s'.", boot_splash_filename);
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return;
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}
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/* loading file data */
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file_data = read_splashfile(filename, &file_size, &file_type);
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if (file_data == NULL) {
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g_free(filename);
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return;
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}
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if (boot_splash_filedata != NULL) {
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g_free(boot_splash_filedata);
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}
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boot_splash_filedata = (uint8_t *)file_data;
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boot_splash_filedata_size = file_size;
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/* insert data */
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if (file_type == JPG_FILE) {
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fw_cfg_add_file(s, "bootsplash.jpg",
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boot_splash_filedata, boot_splash_filedata_size);
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} else {
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fw_cfg_add_file(s, "bootsplash.bmp",
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boot_splash_filedata, boot_splash_filedata_size);
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}
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g_free(filename);
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}
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}
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static void fw_cfg_write(FWCfgState *s, uint8_t value)
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{
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int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
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FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK];
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FW_CFG_DPRINTF("write %d\n", value);
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if (s->cur_entry & FW_CFG_WRITE_CHANNEL && e->callback &&
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s->cur_offset < e->len) {
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e->data[s->cur_offset++] = value;
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if (s->cur_offset == e->len) {
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e->callback(e->callback_opaque, e->data);
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s->cur_offset = 0;
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}
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}
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}
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static int fw_cfg_select(FWCfgState *s, uint16_t key)
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{
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int ret;
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s->cur_offset = 0;
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if ((key & FW_CFG_ENTRY_MASK) >= FW_CFG_MAX_ENTRY) {
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s->cur_entry = FW_CFG_INVALID;
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ret = 0;
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} else {
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s->cur_entry = key;
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ret = 1;
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}
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FW_CFG_DPRINTF("select key %d (%sfound)\n", key, ret ? "" : "not ");
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return ret;
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}
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static uint8_t fw_cfg_read(FWCfgState *s)
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{
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int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
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FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK];
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uint8_t ret;
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if (s->cur_entry == FW_CFG_INVALID || !e->data || s->cur_offset >= e->len)
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ret = 0;
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else
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ret = e->data[s->cur_offset++];
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FW_CFG_DPRINTF("read %d\n", ret);
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return ret;
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}
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static uint32_t fw_cfg_io_readb(void *opaque, uint32_t addr)
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{
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return fw_cfg_read(opaque);
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}
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static void fw_cfg_io_writeb(void *opaque, uint32_t addr, uint32_t value)
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{
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fw_cfg_write(opaque, (uint8_t)value);
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}
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static void fw_cfg_io_writew(void *opaque, uint32_t addr, uint32_t value)
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{
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fw_cfg_select(opaque, (uint16_t)value);
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}
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static uint32_t fw_cfg_mem_readb(void *opaque, target_phys_addr_t addr)
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{
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return fw_cfg_read(opaque);
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}
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static void fw_cfg_mem_writeb(void *opaque, target_phys_addr_t addr,
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uint32_t value)
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{
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fw_cfg_write(opaque, (uint8_t)value);
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}
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static void fw_cfg_mem_writew(void *opaque, target_phys_addr_t addr,
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uint32_t value)
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{
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fw_cfg_select(opaque, (uint16_t)value);
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}
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static CPUReadMemoryFunc * const fw_cfg_ctl_mem_read[3] = {
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NULL,
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NULL,
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NULL,
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};
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static CPUWriteMemoryFunc * const fw_cfg_ctl_mem_write[3] = {
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NULL,
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fw_cfg_mem_writew,
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NULL,
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};
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static CPUReadMemoryFunc * const fw_cfg_data_mem_read[3] = {
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fw_cfg_mem_readb,
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NULL,
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NULL,
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};
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static CPUWriteMemoryFunc * const fw_cfg_data_mem_write[3] = {
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fw_cfg_mem_writeb,
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NULL,
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NULL,
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};
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static void fw_cfg_reset(DeviceState *d)
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{
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FWCfgState *s = DO_UPCAST(FWCfgState, busdev.qdev, d);
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fw_cfg_select(s, 0);
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}
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/* Save restore 32 bit int as uint16_t
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This is a Big hack, but it is how the old state did it.
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Or we broke compatibility in the state, or we can't use struct tm
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*/
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static int get_uint32_as_uint16(QEMUFile *f, void *pv, size_t size)
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{
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uint32_t *v = pv;
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*v = qemu_get_be16(f);
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return 0;
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}
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static void put_unused(QEMUFile *f, void *pv, size_t size)
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{
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fprintf(stderr, "uint32_as_uint16 is only used for backward compatibility.\n");
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fprintf(stderr, "This functions shouldn't be called.\n");
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}
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static const VMStateInfo vmstate_hack_uint32_as_uint16 = {
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.name = "int32_as_uint16",
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.get = get_uint32_as_uint16,
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.put = put_unused,
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};
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#define VMSTATE_UINT16_HACK(_f, _s, _t) \
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VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_hack_uint32_as_uint16, uint32_t)
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static bool is_version_1(void *opaque, int version_id)
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{
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return version_id == 1;
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}
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static const VMStateDescription vmstate_fw_cfg = {
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.name = "fw_cfg",
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.version_id = 2,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField []) {
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VMSTATE_UINT16(cur_entry, FWCfgState),
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VMSTATE_UINT16_HACK(cur_offset, FWCfgState, is_version_1),
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VMSTATE_UINT32_V(cur_offset, FWCfgState, 2),
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VMSTATE_END_OF_LIST()
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}
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};
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int fw_cfg_add_bytes(FWCfgState *s, uint16_t key, uint8_t *data, uint32_t len)
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{
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int arch = !!(key & FW_CFG_ARCH_LOCAL);
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key &= FW_CFG_ENTRY_MASK;
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if (key >= FW_CFG_MAX_ENTRY)
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return 0;
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s->entries[arch][key].data = data;
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s->entries[arch][key].len = len;
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return 1;
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}
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int fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value)
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{
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uint16_t *copy;
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copy = g_malloc(sizeof(value));
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*copy = cpu_to_le16(value);
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return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
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}
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int fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value)
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{
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uint32_t *copy;
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copy = g_malloc(sizeof(value));
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*copy = cpu_to_le32(value);
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return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
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}
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int fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value)
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{
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uint64_t *copy;
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copy = g_malloc(sizeof(value));
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*copy = cpu_to_le64(value);
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return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
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}
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int fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback,
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void *callback_opaque, uint8_t *data, size_t len)
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{
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int arch = !!(key & FW_CFG_ARCH_LOCAL);
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if (!(key & FW_CFG_WRITE_CHANNEL))
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return 0;
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key &= FW_CFG_ENTRY_MASK;
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if (key >= FW_CFG_MAX_ENTRY || len > 65535)
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return 0;
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s->entries[arch][key].data = data;
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s->entries[arch][key].len = len;
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s->entries[arch][key].callback_opaque = callback_opaque;
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s->entries[arch][key].callback = callback;
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return 1;
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}
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int fw_cfg_add_file(FWCfgState *s, const char *filename, uint8_t *data,
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uint32_t len)
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{
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int i, index;
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if (!s->files) {
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int dsize = sizeof(uint32_t) + sizeof(FWCfgFile) * FW_CFG_FILE_SLOTS;
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s->files = g_malloc0(dsize);
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fw_cfg_add_bytes(s, FW_CFG_FILE_DIR, (uint8_t*)s->files, dsize);
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}
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index = be32_to_cpu(s->files->count);
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if (index == FW_CFG_FILE_SLOTS) {
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fprintf(stderr, "fw_cfg: out of file slots\n");
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return 0;
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}
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fw_cfg_add_bytes(s, FW_CFG_FILE_FIRST + index, data, len);
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pstrcpy(s->files->f[index].name, sizeof(s->files->f[index].name),
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filename);
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for (i = 0; i < index; i++) {
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if (strcmp(s->files->f[index].name, s->files->f[i].name) == 0) {
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FW_CFG_DPRINTF("%s: skip duplicate: %s\n", __FUNCTION__,
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s->files->f[index].name);
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return 1;
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}
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}
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s->files->f[index].size = cpu_to_be32(len);
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s->files->f[index].select = cpu_to_be16(FW_CFG_FILE_FIRST + index);
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FW_CFG_DPRINTF("%s: #%d: %s (%d bytes)\n", __FUNCTION__,
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index, s->files->f[index].name, len);
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s->files->count = cpu_to_be32(index+1);
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return 1;
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}
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static void fw_cfg_machine_ready(struct Notifier *n, void *data)
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{
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uint32_t len;
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FWCfgState *s = container_of(n, FWCfgState, machine_ready);
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char *bootindex = get_boot_devices_list(&len);
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fw_cfg_add_file(s, "bootorder", (uint8_t*)bootindex, len);
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}
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FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
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target_phys_addr_t ctl_addr, target_phys_addr_t data_addr)
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{
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DeviceState *dev;
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SysBusDevice *d;
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FWCfgState *s;
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dev = qdev_create(NULL, "fw_cfg");
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qdev_prop_set_uint32(dev, "ctl_iobase", ctl_port);
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qdev_prop_set_uint32(dev, "data_iobase", data_port);
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qdev_init_nofail(dev);
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d = sysbus_from_qdev(dev);
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s = DO_UPCAST(FWCfgState, busdev.qdev, dev);
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if (ctl_addr) {
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sysbus_mmio_map(d, 0, ctl_addr);
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}
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if (data_addr) {
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sysbus_mmio_map(d, 1, data_addr);
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}
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fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (uint8_t *)"QEMU", 4);
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fw_cfg_add_bytes(s, FW_CFG_UUID, qemu_uuid, 16);
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fw_cfg_add_i16(s, FW_CFG_NOGRAPHIC, (uint16_t)(display_type == DT_NOGRAPHIC));
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fw_cfg_add_i16(s, FW_CFG_NB_CPUS, (uint16_t)smp_cpus);
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fw_cfg_add_i16(s, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
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fw_cfg_add_i16(s, FW_CFG_BOOT_MENU, (uint16_t)boot_menu);
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fw_cfg_bootsplash(s);
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s->machine_ready.notify = fw_cfg_machine_ready;
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qemu_add_machine_init_done_notifier(&s->machine_ready);
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return s;
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}
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static int fw_cfg_init1(SysBusDevice *dev)
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{
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FWCfgState *s = FROM_SYSBUS(FWCfgState, dev);
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int io_ctl_memory, io_data_memory;
|
|
|
|
io_ctl_memory = cpu_register_io_memory(fw_cfg_ctl_mem_read,
|
|
fw_cfg_ctl_mem_write, s,
|
|
DEVICE_NATIVE_ENDIAN);
|
|
sysbus_init_mmio(dev, FW_CFG_SIZE, io_ctl_memory);
|
|
|
|
io_data_memory = cpu_register_io_memory(fw_cfg_data_mem_read,
|
|
fw_cfg_data_mem_write, s,
|
|
DEVICE_NATIVE_ENDIAN);
|
|
sysbus_init_mmio(dev, FW_CFG_SIZE, io_data_memory);
|
|
|
|
if (s->ctl_iobase) {
|
|
register_ioport_write(s->ctl_iobase, 2, 2, fw_cfg_io_writew, s);
|
|
}
|
|
if (s->data_iobase) {
|
|
register_ioport_read(s->data_iobase, 1, 1, fw_cfg_io_readb, s);
|
|
register_ioport_write(s->data_iobase, 1, 1, fw_cfg_io_writeb, s);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static SysBusDeviceInfo fw_cfg_info = {
|
|
.init = fw_cfg_init1,
|
|
.qdev.name = "fw_cfg",
|
|
.qdev.size = sizeof(FWCfgState),
|
|
.qdev.vmsd = &vmstate_fw_cfg,
|
|
.qdev.reset = fw_cfg_reset,
|
|
.qdev.no_user = 1,
|
|
.qdev.props = (Property[]) {
|
|
DEFINE_PROP_HEX32("ctl_iobase", FWCfgState, ctl_iobase, -1),
|
|
DEFINE_PROP_HEX32("data_iobase", FWCfgState, data_iobase, -1),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
},
|
|
};
|
|
|
|
static void fw_cfg_register_devices(void)
|
|
{
|
|
sysbus_register_withprop(&fw_cfg_info);
|
|
}
|
|
|
|
device_init(fw_cfg_register_devices)
|