More examples

examples/07_serial/Makefile

@@ -0,0 +1,4 @@
+TARGET = serial.efi
+
+#USE_GCC=1
+include uefi/Makefile

examples/07_serial/serial.c

@@ -0,0 +1,24 @@
+#include <uefi.h>
+
+/**
+ * Use serial port
+ */
+int main(int argc, char **argv)
+{
+    (void)argc;
+    (void)argv;
+    FILE *f;
+    char buff[2];
+
+    if((f = fopen("/dev/serial", "r"))) {
+        fwrite("sending bytes as-is with fwrite\r\n", 33, 1, f);
+        fprintf(f, "sending characters automatically wchar_t/char converted with fprintf\n");
+        printf("Press a key on the other side\n");
+        while(!fread(buff, 1, 1, f));
+        buff[1] = 0;
+        printf("Got key: %02x '%s'\n", buff[0], buff);
+        fclose(f);
+    } else
+        fprintf(stderr, "Unable to open serial port\n");
+    return 0;
+}

examples/07_serial/uefi

@@ -0,0 +1 @@
+../../uefi

examples/08_pointer/Makefile

@@ -0,0 +1,4 @@
+TARGET = pointer.efi
+
+#USE_GCC=1
+include uefi/Makefile

examples/08_pointer/pointer.c

@@ -0,0 +1,32 @@
+#include <uefi.h>
+
+/**
+ * Get mouse pointer's coordinates
+ */
+int main(int argc, char **argv)
+{
+    (void)argc;
+    (void)argv;
+    efi_status_t status;
+    efi_guid_t ptrGuid = EFI_SIMPLE_POINTER_PROTOCOL_GUID;
+    efi_simple_pointer_protocol_t *ptr = NULL;
+    efi_simple_pointer_state_t state = {0};
+    int x = 0, y = 0;
+
+    status = BS->LocateProtocol(&ptrGuid, NULL, (void**)&ptr);
+    if(!EFI_ERROR(status) && ptr) {
+        /* if we got the interface, loop until a key pressed */
+        printf("move mouse around, press any key to exit\n");
+        while(!getchar_ifany()) {
+            ptr->GetState(ptr, &state);
+            x += state.RelativeMovementX;
+            y += state.RelativeMovementY;
+            printf("\rx %4d y %4d btns %d %d", x, y, state.LeftButton, state.RightButton);
+            /* let the CPU rest a bit */
+            usleep(100);
+        }
+        printf("\n");
+    } else
+        fprintf(stderr, "unable to get simple pointer protocol\n");
+    return 0;
+}

examples/08_pointer/uefi

@@ -0,0 +1 @@
+../../uefi

examples/09_vidmodes/Makefile

@@ -0,0 +1,4 @@
+TARGET = vidmodes.efi
+
+#USE_GCC=1
+include uefi/Makefile

examples/09_vidmodes/uefi

@@ -0,0 +1 @@
+../../uefi

examples/09_vidmodes/vidmodes.c

@@ -0,0 +1,59 @@
+#include <uefi.h>
+
+/**
+ * List or set GOP video modes
+ */
+int main(int argc, char **argv)
+{
+    efi_status_t status;
+    efi_guid_t gopGuid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
+    efi_gop_t *gop = NULL;
+    efi_gop_mode_info_t *info = NULL;
+    uintn_t isiz = sizeof(efi_gop_mode_info_t), currentMode, i;
+
+    status = BS->LocateProtocol(&gopGuid, NULL, (void**)&gop);
+    if(!EFI_ERROR(status) && gop) {
+        /* if mode given on command line, set it */
+        if(argc > 1) {
+            status = gop->SetMode(gop, atoi(argv[1]));
+            /* changing the resolution might mess up ConOut and StdErr, better to reset them */
+            ST->ConOut->Reset(ST->ConOut, 0);
+            ST->StdErr->Reset(ST->StdErr, 0);
+            if(EFI_ERROR(status)) {
+                fprintf(stderr, "unable to set video mode\n");
+                return 0;
+            }
+        }
+        /* we got the interface, get current mode */
+        status = gop->QueryMode(gop, gop->Mode ? gop->Mode->Mode : 0, &isiz, &info);
+        if(status == EFI_NOT_STARTED || !gop->Mode) {
+            status = gop->SetMode(gop, 0);
+            ST->ConOut->Reset(ST->ConOut, 0);
+            ST->StdErr->Reset(ST->StdErr, 0);
+        }
+        if(EFI_ERROR(status)) {
+            fprintf(stderr, "unable to get current video mode\n");
+            return 0;
+        }
+        currentMode = gop->Mode->Mode;
+        /* iterate on modes and print info */
+        for(i = 0; i < gop->Mode->MaxMode; i++) {
+            status = gop->QueryMode(gop, i, &isiz, &info);
+            if(EFI_ERROR(status) || info->PixelFormat > PixelBitMask) continue;
+            printf(" %c%3d. %4d x%4d (pitch %4d fmt %d r:%06x g:%06x b:%06x)\n",
+                i == currentMode ? '*' : ' ', i,
+                info->HorizontalResolution, info->VerticalResolution, info->PixelsPerScanLine, info->PixelFormat,
+                info->PixelFormat==PixelRedGreenBlueReserved8BitPerColor?0xff:(
+                info->PixelFormat==PixelBlueGreenRedReserved8BitPerColor?0xff0000:(
+                info->PixelFormat==PixelBitMask?info->PixelInformation.RedMask:0)),
+                info->PixelFormat==PixelRedGreenBlueReserved8BitPerColor ||
+                info->PixelFormat==PixelBlueGreenRedReserved8BitPerColor?0xff00:(
+                info->PixelFormat==PixelBitMask?info->PixelInformation.GreenMask:0),
+                info->PixelFormat==PixelRedGreenBlueReserved8BitPerColor?0xff0000:(
+                info->PixelFormat==PixelBlueGreenRedReserved8BitPerColor?0xff:(
+                info->PixelFormat==PixelBitMask?info->PixelInformation.BlueMask:0)));
+        }
+    } else
+        fprintf(stderr, "unable to get graphics output protocol\n");
+    return 0;
+}