github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-09-26 03:04:31 +00:00
Code Issues Projects Releases Wiki Activity

dm: virtio-gpu: VGA compability support

Browse Source 
Legacy VGA & VBE interface as a common interface is supported by
many legacy and modern OS. Many installer of OS distribution use
this interface to display the GUI of installer when setup a refresh
new installation on bare-metal. Besides, Windows OS always use this
interface to display it's BSOD, recovery mode & safe mode GUI. It
is need because Windows don't include virtio-gpu driver as their
in-box driver, VGA interface will be used before the virtio-gpu
driver been installed.
To be compatiable with the PCI bar layout of legacy VGA, the layout
is refined to meet with the requirement of legacy VGA and modern
virtio-gpu.

BAR0: VGA Framebuffer memory, 16 MB in size.
BAR2: MMIO Space
  [0x0000~0x03ff] EDID data blob
  [0x0400~0x041f] VGA ioports registers
  [0x0500~0x0516] bochs display interface registers
  [0x1000~0x17ff] Virtio common configuration registers
  [0x1800~0x1fff] Virtio ISR state registers
  [0x2000~0x2fff] Virtio device configuration registers
  [0x3000~0x3fff] Virtio notification registers
BAR4: MSI/MSI-X
BAR5: Virtio port io

Tracked-On: #7210
Signed-off-by: Sun Peng <peng.p.sun@linux.intel.com>
Reviewed-by: Zhao, yakui <yakui.zhao@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
This commit is contained in:
Sun, Peng
2022-02-25 23:04:58 +08:00
committed by acrnsi-robot
parent f2cfa761ae
commit 1ed96bfbf8
12 changed files with 2082 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
devicemodel/include/vmmapi.h
View File

@@ -53,6 +53,7 @@ struct vmctx {
uint32_t lowmem_limit;
uint64_t highmem_gpa_base;
size_t lowmem;
size_t fbmem;
size_t biosmem;
size_t highmem;
char *baseaddr;
@@ -64,6 +65,7 @@ struct vmctx {
void *vpit;
void *ioc_dev;
void *tpm_dev;
void *fb_base;
/* BSP state. guest loader needs to fill it */
struct acrn_vcpu_regs bsp_regs;