diff options
| -rw-r--r-- | hw/pc.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/hw/pc.c b/hw/pc.c index de23fa7f6e..b47c95d72a 100644 --- a/hw/pc.c +++ b/hw/pc.c @@ -825,6 +825,7 @@ static void load_linux(void *fw_cfg, uint8_t header[8192]; target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr = 0; FILE *f, *fi; + char *vmode; /* Align to 16 bytes as a paranoia measure */ cmdline_size = (strlen(kernel_cmdline)+16) & ~15; @@ -900,6 +901,24 @@ static void load_linux(void *fw_cfg, stw_p(header+0x22, cmdline_addr-real_addr); } + /* handle vga= parameter */ + vmode = strstr(kernel_cmdline, "vga="); + if (vmode) { + unsigned int video_mode; + /* skip "vga=" */ + vmode += 4; + if (!strncmp(vmode, "normal", 6)) { + video_mode = 0xffff; + } else if (!strncmp(vmode, "ext", 3)) { + video_mode = 0xfffe; + } else if (!strncmp(vmode, "ask", 3)) { + video_mode = 0xfffd; + } else { + video_mode = strtol(vmode, NULL, 0); + } + stw_p(header+0x1fa, video_mode); + } + /* loader type */ /* High nybble = B reserved for Qemu; low nybble is revision number. If this code is substantially changed, you may want to consider |