Made an option to let qemu pass a picture to bios, let the bios show it as a
logo. By default it is off, enable it as following
-boot splash_time=N,splash_filename=P
N have a max value of 0x, unit is ms. P is the a file name or a absolute
path.
Currently a trial version of sea-bios could be used to test it.
Signed-off-by: Wayne Xia
---
hw/fw_cfg.c | 141 -
qemu-config.c | 27 +++
sysemu.h |3 +
vl.c | 17 +++-
4 files changed, 186 insertions(+), 2 deletions(-)
diff --git a/hw/fw_cfg.c b/hw/fw_cfg.c
index 85c8c3c..b22ff0a 100644
--- a/hw/fw_cfg.c
+++ b/hw/fw_cfg.c
@@ -26,6 +26,7 @@
#include "isa.h"
#include "fw_cfg.h"
#include "sysbus.h"
+#include "qemu-error.h"
/* debug firmware config */
//#define DEBUG_FW_CFG
@@ -56,6 +57,144 @@ struct FWCfgState {
Notifier machine_ready;
};
+#define JPG_FILE 0
+#define BMP_FILE 1
+
+static FILE *probe_splashfile(char *filename, int *file_sizep, int *file_typep)
+{
+FILE *fp = NULL;
+int fop_ret;
+int file_size;
+int file_type = -1;
+unsigned char buf[2] = {0, 0};
+unsigned int filehead_value = 0;
+int bmp_bpp;
+
+fp = fopen(filename, "rb");
+if (fp == NULL) {
+error_report("failed to open file '%s'.", filename);
+return fp;
+}
+/* check file size */
+fseek(fp, 0L, SEEK_END);
+file_size = ftell(fp);
+if (file_size < 2) {
+error_report("file size is less than 2 bytes '%s'.", filename);
+fclose(fp);
+fp = NULL;
+return fp;
+}
+/* check magic ID */
+fseek(fp, 0L, SEEK_SET);
+fop_ret = fread(buf, 1, 2, fp);
+filehead_value = (buf[0] + (buf[1] << 8)) & 0x;
+if (filehead_value == 0xd8ff) {
+file_type = JPG_FILE;
+} else {
+if (filehead_value == 0x4d42) {
+file_type = BMP_FILE;
+}
+}
+if (file_type < 0) {
+error_report("'%s' not jpg/bmp file,head:0x%x.",
+ filename, filehead_value);
+fclose(fp);
+fp = NULL;
+return fp;
+}
+/* check BMP bpp */
+if (file_type == BMP_FILE) {
+fseek(fp, 28, SEEK_SET);
+fop_ret = fread(buf, 1, 2, fp);
+bmp_bpp = (buf[0] + (buf[1] << 8)) & 0x;
+if (bmp_bpp != 24) {
+error_report("only 24bpp bmp file is supported.");
+fclose(fp);
+fp = NULL;
+return fp;
+}
+}
+/* return values */
+*file_sizep = file_size;
+*file_typep = file_type;
+return fp;
+}
+
+static void fw_cfg_bootsplash(FWCfgState *s)
+{
+int boot_splash_time = 0; /* default is off */
+const char *boot_splash_filename = "bootsplash.bmp";
+char *p;
+char *filename;
+FILE *fp;
+int fop_ret;
+int file_size;
+int file_type = -1;
+const char *temp;
+
+/* get user configuration */
+QemuOptsList *plist = qemu_find_opts("bootsplash");
+QemuOpts *opts = QTAILQ_FIRST(&plist->head);
+if (opts != NULL) {
+temp = qemu_opt_get(opts, "splash_time");
+if (temp != NULL) {
+p = (char *)temp;
+boot_splash_time = strtol(p, (char **)&p, 10);
+}
+temp = qemu_opt_get(opts, "splash_filename");
+if (temp != NULL) {
+boot_splash_filename = temp;
+}
+}
+
+/* check user configuration */
+if (boot_splash_time <= 0) {
+/* do nothing, directly return */
+return;
+}
+if (boot_splash_time > 0x) {
+error_report("splash time is big than 65535, force it to 65535.");
+boot_splash_time = 65535;
+}
+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;
+}
+
+/* probing the file */
+fp = probe_splashfile(filename, &file_size, &file_type);
+if (fp == NULL) {
+qemu_free(filename);
+return;
+}
+
+/* loading file data */
+if (boot_splash_filedata != NULL) {
+qemu_free(boot_splash_filedata);
+}
+boot_splash_filedata = qemu_malloc(file_size);
+boot_splash_filedata_size = file_size;
+fseek(fp, 0L, SEEK_SET);
+fop_ret = fread(boot_splash_filedata, 1, file_size, fp);
+fclose(fp);
+
+/* 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);
+}
+/* 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, "qemu_extra_params_fw.cfg", qemu_extra_params_fw, 4);
+qemu_free(filename);
+}
+
+
s
