ia32: add passing of graphmode params via syspage and platformctl

hal/ia32/cpu.c

@@ -568,6 +568,17 @@ int hal_platformctl(void *ptr)
 			}
 			break;
 
+		case pctl_graphmode:
+			if (data->action == pctl_get) {
+				data->graphmode.width = syspage->hs.graphmode.width;
+				data->graphmode.height = syspage->hs.graphmode.height;
+				data->graphmode.bpp = syspage->hs.graphmode.bpp;
+				data->graphmode.pitch = syspage->hs.graphmode.pitch;
+				data->graphmode.framebuffer = syspage->hs.graphmode.framebuffer;
+				return EOK;
+			}
+			break;
+
 		default:
 			break;
 	}

include/arch/ia32/ia32.h

@@ -71,9 +71,11 @@ typedef struct {
 } __attribute__((packed)) pci_dev_t;
 
 
+/* clang-format off */
+
 typedef struct {
 	enum { pctl_set = 0, pctl_get } action;
-	enum { pctl_pci = 0, pctl_busmaster, pctl_reboot } type;
+	enum { pctl_pci = 0, pctl_busmaster, pctl_reboot, pctl_graphmode } type;
 
 	union {
 		struct {
@@ -91,8 +93,18 @@ typedef struct {
 			unsigned int magic;
 			unsigned int reason;
 		} reboot;
+
+		struct {
+			unsigned short width;
+			unsigned short height;
+			unsigned short bpp;
+			unsigned short pitch;
+			unsigned long framebuffer; /* addr_t */
+		} graphmode;
 	};
 } platformctl_t;
 
+/* clang-format on */
+
 
 #endif

include/arch/ia32/syspage.h

@@ -47,6 +47,14 @@ typedef struct {
 	unsigned int hpetLength;
 	unsigned long mcfg; /* addr_t */
 	unsigned int mcfgLength;
+
+	struct {
+		unsigned short width;
+		unsigned short height;
+		unsigned short bpp;
+		unsigned short pitch;
+		unsigned long framebuffer;       /* addr_t */
+	} __attribute__((packed)) graphmode; /* Graphics mode info */
 } __attribute__((packed)) hal_syspage_t;