stos: bpal: Put RSDP base in BPAL handle

Signed-off-by: Chloe M. <chloe@mensia.org>

paw/stos/head/ke/bpal.h

@@ -73,6 +73,7 @@ typedef struct {
  *
  * @KernelBase:     Kernel load base
  * @Framebuffer:    Framebuffer info
+ * @RsdpBase:       ACPI RSDP base
  * @MemEntryIdx:    Callback to get memory map entry by index
  * @ModuleLookup:   Lookup a module
  * @CommandLine:    Kernel command line
@@ -80,6 +81,7 @@ typedef struct {
 typedef struct {
     UPTR KernelBase;
     BPAL_FRAMEBUFFER Framebuffer;
+    VOID *RsdpBase;
     ST_STATUS(*MemEntryIdx)(USIZE Idx, MEMMAP_ENTRY *Result);
     ST_STATUS(*ModuleLookup)(CHAR *Path, BPAL_MODULE *Result);
     const CHAR *CommandLine;

paw/stos/ke/bpal/proto/limine.c

@@ -65,6 +65,13 @@ static struct limine_executable_cmdline_request CmdLineReq = {
     .revision = 0
 };
 
+/* RSDP request */
+static struct limine_rsdp_response *RsdpResp = NULL;
+static volatile struct limine_rsdp_request RsdpReq = {
+    .id = LIMINE_RSDP_REQUEST_ID,
+    .revision = 0
+};
+
 static ST_STATUS
 LimineModuleLookup(CHAR *Path, BPAL_MODULE *Result)
 {
@@ -144,6 +151,7 @@ KeBpalLimineInit(BPAL_HANDLE *Handle)
     FbResp = FbReq.response;
     MapResp = MapReq.response;
     CmdLineResp = CmdLineReq.response;
+    RsdpResp = RsdpReq.response;
 
     DTRACE(
         "slut handed control by %s %s\n",
@@ -171,4 +179,5 @@ KeBpalLimineInit(BPAL_HANDLE *Handle)
     Handle->KernelBase = HHDMResp->offset;
     Handle->MemEntryIdx = LimineMemEntryIdx;
     Handle->ModuleLookup = LimineModuleLookup;
+    Handle->RsdpBase = RsdpResp->address;
 }