diff options
Diffstat (limited to 'src/arch/x86/ebda.c')
| -rw-r--r-- | src/arch/x86/ebda.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/arch/x86/ebda.c b/src/arch/x86/ebda.c index 0e3465a040..e576a14791 100644 --- a/src/arch/x86/ebda.c +++ b/src/arch/x86/ebda.c @@ -1,9 +1,19 @@ /* SPDX-License-Identifier: GPL-2.0-only */ -#include <stdint.h> #include <acpi/acpi.h> -#include <arch/ebda.h> +#include <bootstate.h> #include <commonlib/endian.h> +#include <stdint.h> + +#define X86_BDA_SIZE 0x200 +#define X86_BDA_BASE ((void *)0x400) +#define X86_EBDA_SEGMENT ((void *)0x40e) +#define X86_EBDA_LOWMEM ((void *)0x413) + +#define DEFAULT_EBDA_LOWMEM (1024 << 10) +#define DEFAULT_EBDA_SEGMENT 0xF600 +#define DEFAULT_EBDA_SIZE 0x400 + static void *get_ebda_start(void) { @@ -40,7 +50,7 @@ static void setup_ebda(u32 low_memory_size, u16 ebda_segment, u16 ebda_size) write_le16(ebda, ebda_kb); } -void setup_default_ebda(void) +static void setup_default_ebda(void *unused) { if (acpi_is_wakeup_s3()) return; @@ -49,3 +59,6 @@ void setup_default_ebda(void) DEFAULT_EBDA_SEGMENT, DEFAULT_EBDA_SIZE); } + +/* Ensure EBDA is prepared before Option ROMs. */ +BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, setup_default_ebda, NULL); |