[PATCH] optionrom/pvh: scan entire RSDP Area

[Joe Richey <joerichey94@gmail.com>]

From: Joe Richey <joerichey@google.com>

Right now the PVH option rom scans for the RSDP from 0xE0000 to
0xE1FFF. This is probobly a typo, it should scan from 0xE0000 to
0xFFFFF.

This is actually an issue on some QEMU versions/machines. For example,
when I run QEMU the RSDP is placed at 0xf5ad0 which will not be picked
up by the current implementation.

This bug still allows a Linux guest to boot (in most configurations) as
the kernel will just scan for the RSDP if one isn't provided.

Signed-off-by: Joe Richey <joerichey@google.com>
---
 pc-bios/optionrom/pvh_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pc-bios/optionrom/pvh_main.c b/pc-bios/optionrom/pvh_main.c
index a015e1bf22..28e79d7fc4 100644
--- a/pc-bios/optionrom/pvh_main.c
+++ b/pc-bios/optionrom/pvh_main.c
@@ -29,7 +29,7 @@ asm (".code32"); /* this code will be executed in protected mode */
 
 #define RSDP_SIGNATURE          0x2052545020445352LL /* "RSD PTR " */
 #define RSDP_AREA_ADDR          0x000E0000
-#define RSDP_AREA_SIZE          2048
+#define RSDP_AREA_SIZE          0x00020000
 #define EBDA_BASE_ADDR          0x0000040E
 #define EBDA_SIZE               1024
 
-- 
2.25.1