ptos: bpal: Obtain framebuffer information

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

service/ptos/head/ke/bpal.h

@@ -12,14 +12,33 @@
 #include <ptapi/status.h>
 #include <ptdef.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;
+
 /*
  * Represents a handle for the boot protocol abstraction
  * layer containing data filled in by the bootloader.
  *
- * @KernelBase: Represents the kernel load base
+ * @KernelBase:     Represents the kernel load base
+ * @Framebuffer:    Framebuffer information
  */
 typedef struct {
     UPTR KernelBase;
+    BPAL_FRAMEBUFFER Framebuffer;
 } BPAL_HANDLE;
 
 /*

service/ptos/ke/bpal/proto/limine.c

@@ -9,6 +9,15 @@
 #include <ke/bpal.h>
 #include <lib/limine.h>
 
+#define FRAMEBUFFER FbResp->framebuffers[0]
+
+/* 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 = {
@@ -16,6 +25,28 @@ static volatile struct limine_hhdm_request HHDMReq = {
     .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 *Result)
 {
@@ -24,5 +55,8 @@ KeBpalLimineInit(BPAL_HANDLE *Result)
     }
 
     HHDMResp = HHDMReq.response;
+    FbResp = FbReq.response;
+
     Result->KernelBase = HHDMResp->offset;
+    BpalInitFramebuffer(Result);
 }