From 14b109ea24dc5cb1db948de57a2a44c80ef4622e Mon Sep 17 00:00:00 2001 From: Brett Weiland Date: Wed, 24 Mar 2021 15:36:54 -0500 Subject: modified: README.md modified: compiler/create_crosscompiler.sh deleted: notes modified: src/.gdb_history deleted: src/amd64_vol2.pdf modified: src/bootloader/bios_functions/bios_disk.asm modified: src/bootloader/bios_functions/print.asm modified: src/bootloader/bootloader.asm modified: src/bootloader/cpu_check.asm modified: src/bootloader/enter_kernel.asm deleted: src/bootloader/enter_kernel_backup modified: src/bootloader/gdt.asm deleted: src/bootloader/multicore.asm deleted: src/bootloader/notes new file: src/debug/gdbinit.gdb deleted: src/indigo_os modified: src/kernel/include/libc.h modified: src/kernel/include/paging.h modified: src/kernel/include/video.h modified: src/kernel/kernel.c modified: src/kernel/libs/acpi.c modified: src/kernel/libs/drivers/serial.c modified: src/kernel/libs/drivers/video.c modified: src/kernel/libs/libc.c modified: src/kernel/libs/page.c modified: src/link.ld modified: src/makefile new file: tools/README.md modified: tools/page/page.py --- src/kernel/libs/acpi.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'src/kernel/libs/acpi.c') diff --git a/src/kernel/libs/acpi.c b/src/kernel/libs/acpi.c index 8bc6a56..0c22fe4 100644 --- a/src/kernel/libs/acpi.c +++ b/src/kernel/libs/acpi.c @@ -31,16 +31,13 @@ static int RSDP_verify(void *rsdp_pointer) { return 1; } -// TODO: move these when you gain your sanity -rsdp_t *find_RSDP() { // finds root descriptor +rsdp_t *find_RSDP() { const char sig[9] = "RSD PTR "; uintptr_t *p = (void *)0x040e; uintptr_t *ebda_unshifted = (void *)p; - // TODO you REALLY need to verify this. void *ebda = (void *)((uintptr_t)ebda_unshifted << (uintptr_t)4 & (uintptr_t)0xfffff); - for(void *i = ebda; i <= ebda + 64000; i += 16) { if(!(memcmp(sig, i, 8))) { if(RSDP_verify(i)) { -- cgit v1.2.3