diff options
Diffstat (limited to 'src/arch/i386/firmware/pcbios/hidemem.c')
| -rw-r--r-- | src/arch/i386/firmware/pcbios/hidemem.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/arch/i386/firmware/pcbios/hidemem.c b/src/arch/i386/firmware/pcbios/hidemem.c index 202081b6..c9df7bd0 100644 --- a/src/arch/i386/firmware/pcbios/hidemem.c +++ b/src/arch/i386/firmware/pcbios/hidemem.c @@ -19,10 +19,14 @@ #include <realmode.h> #include <biosint.h> #include <basemem.h> +#include <fakee820.h> #include <gpxe/init.h> #include <gpxe/memmap.h> #include <gpxe/hidemem.h> +/** Set to true if you want to test a fake E820 map */ +#define FAKE_E820 0 + /** Alignment for hidden memory regions */ #define ALIGN_HIDDEN 4096 /* 4kB page alignment should be enough */ @@ -135,6 +139,13 @@ static void hide_etherboot ( void ) { DBG ( "Hiding gPXE from system memory map\n" ); get_memmap ( &memmap ); + /* Hook in fake E820 map, if we're testing one */ + if ( FAKE_E820 ) { + DBG ( "Hooking in fake E820 map\n" ); + fake_e820(); + get_memmap ( &memmap ); + } + /* Initialise the hidden regions */ hide_basemem(); hide_umalloc ( virt_to_phys ( _text ), virt_to_phys ( _text ) ); @@ -194,6 +205,10 @@ static void unhide_etherboot ( int flags __unused ) { */ unhook_bios_interrupt ( 0x15, ( unsigned int ) int15, &int15_vector ); + + /* Unhook fake E820 map, if used */ + if ( FAKE_E820 ) + unfake_e820(); } /** Hide Etherboot startup function */ |