stos: bpal: Add framebuffer info request

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

paw/stos/head/ke/bpal.h

@@ -11,13 +11,32 @@
 
 #include <stdef.h>
 
+/*
+ * Represents a framebuffer
+ */
+typedef struct {
+    VOID *Address;
+    UQUAD Width;
+    UQUAD Height;
+    UQUAD Pitch;
+    SHORT Bpp;
+    UCHAR RedMaskSize;
+    UCHAR RedMaskShift;
+    UCHAR GreenMaskSize;
+    UCHAR GreenMaskShift;
+    UCHAR BlueMaskSize;
+    UCHAR BlueMaskShift;
+} BPAL_FRAMEBUFFER;
+
 /*
  * Boot protocol abstraction handle
  *
  * @KernelBase:     Kernel load base
+ * @Framebuffer:    Framebuffer info
  */
 typedef struct {
     UPTR KernelBase;
+    BPAL_FRAMEBUFFER Framebuffer;
 } BPAL_HANDLE;
 
 /*

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

@@ -10,9 +10,18 @@
 #include <ex/trace.h>
 #include <lib/limine.h>
 
+#define FRAMEBUFFER FbResp->framebuffers[0]
+
 #define DTRACE(Fmt, ...) \
     TRACE("[ BPAL ]: " Fmt, ##__VA_ARGS__)
 
+/* Framebuffer request */
+static struct limine_framebuffer_response *FbResp = NULL;
+static struct limine_framebuffer_request FbReq = {
+    .id = LIMINE_FRAMEBUFFER_REQUEST_ID,
+    .revision = 0
+};
+
 /* HHDM request */
 static struct limine_hhdm_response *HHDMResp = NULL;
 static volatile struct limine_hhdm_request HHDMReq = {
@@ -34,12 +43,35 @@ static struct limine_bootloader_performance_request LoaderPerReq = {
     .revision = 0
 };
 
+VOID
+BpalInitFramebuffer(BPAL_HANDLE *Handle)
+{
+    BPAL_FRAMEBUFFER *Framebuffer;
+
+    if (Handle == NULL) {
+        return;
+    }
+
+    Framebuffer = &Handle->Framebuffer;
+    Framebuffer->Address = FRAMEBUFFER->address;
+    Framebuffer->Width = FRAMEBUFFER->width;
+    Framebuffer->Height = FRAMEBUFFER->height;
+    Framebuffer->Pitch = FRAMEBUFFER->pitch;
+    Framebuffer->RedMaskSize = FRAMEBUFFER->red_mask_size;
+    Framebuffer->RedMaskShift = FRAMEBUFFER->red_mask_shift;
+    Framebuffer->GreenMaskSize = FRAMEBUFFER->green_mask_size;
+    Framebuffer->GreenMaskShift = FRAMEBUFFER->green_mask_shift;
+    Framebuffer->BlueMaskSize = FRAMEBUFFER->blue_mask_size;
+    Framebuffer->BlueMaskShift = FRAMEBUFFER->blue_mask_shift;
+}
+
 VOID
 KeBpalLimineInit(BPAL_HANDLE *Handle)
 {
     LoaderInfoResp = LoaderInfoReq.response;
     LoaderPerfResp = LoaderPerReq.response;
     HHDMResp = HHDMReq.response;
+    FbResp = FbReq.response;
 
     DTRACE(
         "slut handed control by %s %s\n",
@@ -57,5 +89,6 @@ KeBpalLimineInit(BPAL_HANDLE *Handle)
         LoaderPerfResp->exec_usec
     );
 
+    BpalInitFramebuffer(Handle);
     Handle->KernelBase = HHDMResp->offset;
 }