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Implement limine zealbooter prekernel SMBIOS entry patching to kernel.

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This commit is contained in:
TomAwezome 2022-08-23 21:04:27 -04:00
parent dbbf751a44
commit 0bf82fb057
5 changed files with 21 additions and 0 deletions
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2
src/Kernel/KStart16.ZC
View file

@ -63,6 +63,8 @@ SYS_FRAMEBUFFER_HEIGHT:: DU64 0;
SYS_FRAMEBUFFER_PITCH:: DU64 0;
SYS_FRAMEBUFFER_BPP:: DU16 0;
SYS_SMBIOS_ENTRY:: DU64 0;
#assert $$ - SYS_KERNEL == sizeof(CKernel) - sizeof(CZXE)
TEMP_VBE_MODE: DU8 sizeof(CVBEMode) DUP(0);

1
src/Kernel/KernelA.HH
View file

@ -574,6 +574,7 @@ class CKernel
U64 sys_framebuffer_height;
U64 sys_framebuffer_pitch;
U16 sys_framebuffer_bpp;
U64 sys_smbios_entry;
};
//Run-Levels

3
src/Kernel/KernelB.HH
View file

@ -256,4 +256,7 @@ public _extern SYS_FRAMEBUFFER_HEIGHT U64 sys_framebuffer_height;
public _extern SYS_FRAMEBUFFER_PITCH U64 sys_framebuffer_pitch;
public _extern SYS_FRAMEBUFFER_BPP U16 sys_framebuffer_bpp;
#help_index "Processor/SMBIOS"
public _extern SYS_SMBIOS_ENTRY U8 *sys_smbios_entry;
#help_index ""

6
src/System/Utils/SysRep.ZC
View file

@ -660,6 +660,12 @@ Bool SMBIOSEntryScan(CSMBIOSEntryPoint **entry)
I64 i;
U8 noreg checksum = 0, *mem = 0xF0000;
if (sys_smbios_entry)
{
*entry = sys_smbios_entry;
return TRUE;
}
do
{
if (!MemCompare(mem, "_SM_", 4))

9
zealbooter/zealbooter.c
View file

@ -28,6 +28,11 @@ static volatile struct limine_framebuffer_request framebuffer_request = {
.revision = 0
};
static volatile struct limine_smbios_request smbios_request = {
.id = LIMINE_SMBIOS_REQUEST,
.revision = 0
};
struct CZXE {
uint16_t jmp;
uint8_t module_align_bits;
@ -136,6 +141,7 @@ struct CKernel {
uint64_t sys_framebuffer_height;
uint64_t sys_framebuffer_pitch;
uint16_t sys_framebuffer_bpp;
uint64_t sys_smbios_entry;
} __attribute__((packed));
#define BOOT_SRC_RAM 2
@ -271,6 +277,9 @@ void _start(void) {
void *sys_gdt_ptr = (void *)&CKernel->sys_gdt_ptr - (uintptr_t)kernel->address;
sys_gdt_ptr += final_address;
void *sys_smbios_entry = smbios_request.response->entry_32;
CKernel->sys_smbios_entry = (uintptr_t)sys_smbios_entry - hhdm_request.response->offset;
void *trampoline_phys = (void *)final_address + kernel->size;
uintptr_t boot_stack = ALIGN_UP(final_address + kernel->size + trampoline_size, 16) + boot_stack_size;