summaryrefslogtreecommitdiffstats
path: root/lib/efi_loader
diff options
context:
space:
mode:
Diffstat (limited to 'lib/efi_loader')
-rw-r--r--lib/efi_loader/Makefile1
-rw-r--r--lib/efi_loader/efi_gop.c152
2 files changed, 153 insertions, 0 deletions
diff --git a/lib/efi_loader/Makefile b/lib/efi_loader/Makefile
index 28725a27c7..83e31f6d1f 100644
--- a/lib/efi_loader/Makefile
+++ b/lib/efi_loader/Makefile
@@ -9,4 +9,5 @@
obj-y += efi_image_loader.o efi_boottime.o efi_runtime.o efi_console.o
obj-y += efi_memory.o
+obj-$(CONFIG_LCD) += efi_gop.o
obj-$(CONFIG_PARTITIONS) += efi_disk.o
diff --git a/lib/efi_loader/efi_gop.c b/lib/efi_loader/efi_gop.c
new file mode 100644
index 0000000000..bdd62bc557
--- /dev/null
+++ b/lib/efi_loader/efi_gop.c
@@ -0,0 +1,152 @@
+/*
+ * EFI application disk support
+ *
+ * Copyright (c) 2016 Alexander Graf
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <efi_loader.h>
+#include <inttypes.h>
+#include <lcd.h>
+#include <malloc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const efi_guid_t efi_gop_guid = EFI_GOP_GUID;
+
+struct efi_gop_obj {
+ /* Generic EFI object parent class data */
+ struct efi_object parent;
+ /* EFI Interface callback struct for gop */
+ struct efi_gop ops;
+ /* The only mode we support */
+ struct efi_gop_mode_info info;
+ struct efi_gop_mode mode;
+};
+
+static efi_status_t EFIAPI gop_query_mode(struct efi_gop *this, u32 mode_number,
+ unsigned long *size_of_info,
+ struct efi_gop_mode_info **info)
+{
+ struct efi_gop_obj *gopobj;
+
+ EFI_ENTRY("%p, %x, %p, %p", this, mode_number, size_of_info, info);
+
+ gopobj = container_of(this, struct efi_gop_obj, ops);
+ *size_of_info = sizeof(gopobj->info);
+ *info = &gopobj->info;
+
+ return EFI_EXIT(EFI_SUCCESS);
+}
+
+static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number)
+{
+ EFI_ENTRY("%p, %x", this, mode_number);
+
+ if (mode_number != 0)
+ return EFI_EXIT(EFI_INVALID_PARAMETER);
+
+ return EFI_EXIT(EFI_SUCCESS);
+}
+
+static efi_status_t EFIAPI gop_blt(struct efi_gop *this, void *buffer,
+ unsigned long operation, unsigned long sx,
+ unsigned long sy, unsigned long dx,
+ unsigned long dy, unsigned long width,
+ unsigned long height, unsigned long delta)
+{
+ int i, j, line_len16, line_len32;
+ void *fb;
+
+ EFI_ENTRY("%p, %p, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx", this,
+ buffer, operation, sx, sy, dx, dy, width, height, delta);
+
+ if (operation != EFI_BLT_BUFFER_TO_VIDEO)
+ return EFI_EXIT(EFI_INVALID_PARAMETER);
+
+ fb = (void*)gd->fb_base;
+ line_len16 = panel_info.vl_col * sizeof(u16);
+ line_len32 = panel_info.vl_col * sizeof(u32);
+
+ /* Copy the contents line by line */
+
+ switch (panel_info.vl_bpix) {
+ case LCD_COLOR32:
+ for (i = 0; i < height; i++) {
+ u32 *dest = fb + ((i + dy) * line_len32) +
+ (dx * sizeof(u32));
+ u32 *src = buffer + ((i + sy) * line_len32) +
+ (sx * sizeof(u32));
+
+ /* Same color format, just memcpy */
+ memcpy(dest, src, width * sizeof(u32));
+ }
+ break;
+ case LCD_COLOR16:
+ for (i = 0; i < height; i++) {
+ u16 *dest = fb + ((i + dy) * line_len16) +
+ (dx * sizeof(u16));
+ u32 *src = buffer + ((i + sy) * line_len32) +
+ (sx * sizeof(u32));
+
+ /* Convert from rgb888 to rgb565 */
+ for (j = 0; j < width; j++) {
+ u32 rgb888 = src[j];
+ dest[j] = ((((rgb888 >> (16 + 3)) & 0x1f) << 11) |
+ (((rgb888 >> (8 + 2)) & 0x3f) << 5) |
+ (((rgb888 >> (0 + 3)) & 0x1f) << 0));
+ }
+ }
+ break;
+ }
+
+ lcd_sync();
+
+ return EFI_EXIT(EFI_SUCCESS);
+}
+
+/* This gets called from do_bootefi_exec(). */
+int efi_gop_register(void)
+{
+ struct efi_gop_obj *gopobj;
+ int line_len;
+
+ switch (panel_info.vl_bpix) {
+ case LCD_COLOR32:
+ case LCD_COLOR16:
+ break;
+ default:
+ /* So far, we only work in 16 or 32 bit mode */
+ return -1;
+ }
+
+ gopobj = calloc(1, sizeof(*gopobj));
+
+ /* Fill in object data */
+ gopobj->parent.protocols[0].guid = &efi_gop_guid;
+ gopobj->parent.protocols[0].open = efi_return_handle;
+ gopobj->parent.handle = &gopobj->ops;
+ gopobj->ops.query_mode = gop_query_mode;
+ gopobj->ops.set_mode = gop_set_mode;
+ gopobj->ops.blt = gop_blt;
+ gopobj->ops.mode = &gopobj->mode;
+
+ gopobj->mode.max_mode = 1;
+ gopobj->mode.info = &gopobj->info;
+ gopobj->mode.info_size = sizeof(gopobj->info);
+ gopobj->mode.fb_base = gd->fb_base;
+ gopobj->mode.fb_size = lcd_get_size(&line_len);
+
+ gopobj->info.version = 0;
+ gopobj->info.width = panel_info.vl_col;
+ gopobj->info.height = panel_info.vl_row;
+ gopobj->info.pixel_format = EFI_GOT_RGBA8;
+ gopobj->info.pixels_per_scanline = panel_info.vl_col;
+
+ /* Hook up to the device list */
+ list_add_tail(&gopobj->parent.link, &efi_obj_list);
+
+ return 0;
+}
OpenPOWER on IntegriCloud