2N/A/*
2N/A * GRUB -- GRand Unified Bootloader
2N/A * Copyright (C) 2005,2006,2007,2008,2009 Free Software Foundation, Inc.
2N/A *
2N/A * GRUB is free software: you can redistribute it and/or modify
2N/A * it under the terms of the GNU General Public License as published by
2N/A * the Free Software Foundation, either version 3 of the License, or
2N/A * (at your option) any later version.
2N/A *
2N/A * GRUB is distributed in the hope that it will be useful,
2N/A * but WITHOUT ANY WARRANTY; without even the implied warranty of
2N/A * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2N/A * GNU General Public License for more details.
2N/A *
2N/A * You should have received a copy of the GNU General Public License
2N/A * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
2N/A */
2N/A
2N/A#define grub_video_render_target grub_video_fbrender_target
2N/A
2N/A#include <grub/err.h>
2N/A#include <grub/types.h>
2N/A#include <grub/dl.h>
2N/A#include <grub/misc.h>
2N/A#include <grub/mm.h>
2N/A#include <grub/video.h>
2N/A#include <grub/video_fb.h>
2N/A#include <grub/efi/api.h>
2N/A#include <grub/efi/efi.h>
2N/A#include <grub/efi/uga_draw.h>
2N/A#include <grub/pci.h>
2N/A
2N/AGRUB_MOD_LICENSE ("GPLv3+");
2N/A
2N/Astatic grub_efi_guid_t uga_draw_guid = GRUB_EFI_UGA_DRAW_GUID;
2N/Astatic struct grub_efi_uga_draw_protocol *uga;
2N/Astatic grub_uint32_t uga_fb;
2N/Astatic grub_uint32_t uga_pitch;
2N/A
2N/Astatic struct
2N/A{
2N/A struct grub_video_mode_info mode_info;
2N/A struct grub_video_render_target *render_target;
2N/A grub_uint8_t *ptr;
2N/A} framebuffer;
2N/A
2N/A#define RGB_MASK 0xffffff
2N/A#define RGB_MAGIC 0x121314
2N/A#define LINE_MIN 800
2N/A#define LINE_MAX 4096
2N/A#define FBTEST_STEP (0x10000 >> 2)
2N/A#define FBTEST_COUNT 8
2N/A
2N/Astatic int
2N/Afind_line_len (grub_uint32_t *fb_base, grub_uint32_t *line_len)
2N/A{
2N/A grub_uint32_t *base = (grub_uint32_t *) (grub_target_addr_t) *fb_base;
2N/A int i;
2N/A
2N/A for (i = 0; i < FBTEST_COUNT; i++, base += FBTEST_STEP)
2N/A {
2N/A if ((*base & RGB_MASK) == RGB_MAGIC)
2N/A {
2N/A int j;
2N/A
2N/A for (j = LINE_MIN; j <= LINE_MAX; j++)
2N/A {
2N/A if ((base[j] & RGB_MASK) == RGB_MAGIC)
2N/A {
2N/A *fb_base = (grub_uint32_t) (grub_target_addr_t) base;
2N/A *line_len = j << 2;
2N/A
2N/A return 1;
2N/A }
2N/A }
2N/A
2N/A break;
2N/A }
2N/A }
2N/A
2N/A return 0;
2N/A}
2N/A
2N/Astatic int
2N/Afind_framebuf (grub_uint32_t *fb_base, grub_uint32_t *line_len)
2N/A{
2N/A int found = 0;
2N/A
2N/A auto int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev,
2N/A grub_pci_id_t pciid);
2N/A
2N/A int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev,
2N/A grub_pci_id_t pciid)
2N/A {
2N/A grub_pci_address_t addr;
2N/A
2N/A addr = grub_pci_make_address (dev, GRUB_PCI_REG_CLASS);
2N/A if (grub_pci_read (addr) >> 24 == 0x3)
2N/A {
2N/A int i;
2N/A
2N/A grub_dprintf ("fb", "Display controller: %d:%d.%d\nDevice id: %x\n",
2N/A grub_pci_get_bus (dev), grub_pci_get_device (dev),
2N/A grub_pci_get_function (dev), pciid);
2N/A addr += 8;
2N/A for (i = 0; i < 6; i++, addr += 4)
2N/A {
2N/A grub_uint32_t old_bar1, old_bar2, type;
2N/A grub_uint64_t base64;
2N/A
2N/A old_bar1 = grub_pci_read (addr);
2N/A if ((! old_bar1) || (old_bar1 & GRUB_PCI_ADDR_SPACE_IO))
2N/A continue;
2N/A
2N/A type = old_bar1 & GRUB_PCI_ADDR_MEM_TYPE_MASK;
2N/A if (type == GRUB_PCI_ADDR_MEM_TYPE_64)
2N/A {
2N/A if (i == 5)
2N/A break;
2N/A
2N/A old_bar2 = grub_pci_read (addr + 4);
2N/A }
2N/A else
2N/A old_bar2 = 0;
2N/A
2N/A base64 = old_bar2;
2N/A base64 <<= 32;
2N/A base64 |= (old_bar1 & GRUB_PCI_ADDR_MEM_MASK);
2N/A
2N/A grub_dprintf ("fb", "%s(%d): 0x%llx\n",
2N/A ((old_bar1 & GRUB_PCI_ADDR_MEM_PREFETCH) ?
2N/A "VMEM" : "MMIO"), i,
2N/A (unsigned long long) base64);
2N/A
2N/A if ((old_bar1 & GRUB_PCI_ADDR_MEM_PREFETCH) && (! found))
2N/A {
2N/A *fb_base = base64;
2N/A if (find_line_len (fb_base, line_len))
2N/A found++;
2N/A }
2N/A
2N/A if (type == GRUB_PCI_ADDR_MEM_TYPE_64)
2N/A {
2N/A i++;
2N/A addr += 4;
2N/A }
2N/A }
2N/A }
2N/A
2N/A return found;
2N/A }
2N/A
2N/A grub_pci_iterate (find_card);
2N/A return found;
2N/A}
2N/A
2N/Astatic int
2N/Acheck_protocol (void)
2N/A{
2N/A grub_efi_uga_draw_protocol_t *c;
2N/A
2N/A c = grub_efi_locate_protocol (&uga_draw_guid, 0);
2N/A if (c)
2N/A {
2N/A grub_uint32_t width, height, depth, rate, pixel;
2N/A int ret;
2N/A
2N/A if (efi_call_5 (c->get_mode, c, &width, &height, &depth, &rate))
2N/A return 0;
2N/A
2N/A grub_efi_set_text_mode (0);
2N/A pixel = RGB_MAGIC;
2N/A efi_call_10 (c->blt, c, (struct grub_efi_uga_pixel *) &pixel,
2N/A GRUB_EFI_UGA_VIDEO_FILL, 0, 0, 0, 0, 1, height, 0);
2N/A ret = find_framebuf (&uga_fb, &uga_pitch);
2N/A grub_efi_set_text_mode (1);
2N/A
2N/A if (ret)
2N/A {
2N/A uga = c;
2N/A return 1;
2N/A }
2N/A }
2N/A
2N/A return 0;
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_uga_init (void)
2N/A{
2N/A grub_memset (&framebuffer, 0, sizeof(framebuffer));
2N/A return grub_video_fb_init ();
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_uga_fini (void)
2N/A{
2N/A return grub_video_fb_fini ();
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_uga_setup (unsigned int width, unsigned int height,
2N/A unsigned int mode_type,
2N/A unsigned int mode_mask __attribute__ ((unused)))
2N/A{
2N/A unsigned int depth;
2N/A int found = 0;
2N/A
2N/A depth = (mode_type & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK)
2N/A >> GRUB_VIDEO_MODE_TYPE_DEPTH_POS;
2N/A
2N/A {
2N/A grub_uint32_t w;
2N/A grub_uint32_t h;
2N/A grub_uint32_t d;
2N/A grub_uint32_t r;
2N/A
2N/A if ((! efi_call_5 (uga->get_mode, uga, &w, &h, &d, &r)) &&
2N/A ((! width) || (width == w)) &&
2N/A ((! height) || (height == h)) &&
2N/A ((! depth) || (depth == d)))
2N/A {
2N/A framebuffer.mode_info.width = w;
2N/A framebuffer.mode_info.height = h;
2N/A framebuffer.mode_info.pitch = uga_pitch;
2N/A framebuffer.ptr = (grub_uint8_t *) (grub_target_addr_t) uga_fb;
2N/A
2N/A found = 1;
2N/A }
2N/A }
2N/A
2N/A if (found)
2N/A {
2N/A grub_err_t err;
2N/A
2N/A framebuffer.mode_info.mode_type = GRUB_VIDEO_MODE_TYPE_RGB;
2N/A framebuffer.mode_info.bpp = 32;
2N/A framebuffer.mode_info.bytes_per_pixel = 4;
2N/A framebuffer.mode_info.number_of_colors = 256; /* TODO: fix me. */
2N/A framebuffer.mode_info.red_mask_size = 8;
2N/A framebuffer.mode_info.red_field_pos = 16;
2N/A framebuffer.mode_info.green_mask_size = 8;
2N/A framebuffer.mode_info.green_field_pos = 8;
2N/A framebuffer.mode_info.blue_mask_size = 8;
2N/A framebuffer.mode_info.blue_field_pos = 0;
2N/A framebuffer.mode_info.reserved_mask_size = 8;
2N/A framebuffer.mode_info.reserved_field_pos = 24;
2N/A
2N/A framebuffer.mode_info.blit_format =
2N/A grub_video_get_blit_format (&framebuffer.mode_info);
2N/A
2N/A err = grub_video_fb_create_render_target_from_pointer
2N/A (&framebuffer.render_target,
2N/A &framebuffer.mode_info,
2N/A framebuffer.ptr);
2N/A
2N/A if (err)
2N/A return err;
2N/A
2N/A err = grub_video_fb_set_active_render_target
2N/A (framebuffer.render_target);
2N/A
2N/A if (err)
2N/A return err;
2N/A
2N/A err = grub_video_fb_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS,
2N/A grub_video_fbstd_colors);
2N/A
2N/A return err;
2N/A }
2N/A
2N/A return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "no matching mode found");
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_uga_swap_buffers (void)
2N/A{
2N/A /* TODO: Implement buffer swapping. */
2N/A return GRUB_ERR_NONE;
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_uga_set_active_render_target (struct grub_video_render_target *target)
2N/A{
2N/A if (target == GRUB_VIDEO_RENDER_TARGET_DISPLAY)
2N/A target = framebuffer.render_target;
2N/A
2N/A return grub_video_fb_set_active_render_target (target);
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_video_uga_get_info_and_fini (struct grub_video_mode_info *mode_info,
2N/A void **framebuf)
2N/A{
2N/A grub_memcpy (mode_info, &(framebuffer.mode_info), sizeof (*mode_info));
2N/A *framebuf = (char *) framebuffer.ptr;
2N/A
2N/A grub_video_fb_fini ();
2N/A
2N/A return GRUB_ERR_NONE;
2N/A}
2N/A
2N/Astatic struct grub_video_adapter grub_video_uga_adapter =
2N/A {
2N/A .name = "EFI UGA driver",
2N/A .id = GRUB_VIDEO_DRIVER_EFI_UGA,
2N/A
2N/A .prio = GRUB_VIDEO_ADAPTER_PRIO_FIRMWARE_DIRTY,
2N/A
2N/A .init = grub_video_uga_init,
2N/A .fini = grub_video_uga_fini,
2N/A .setup = grub_video_uga_setup,
2N/A .get_info = grub_video_fb_get_info,
2N/A .get_info_and_fini = grub_video_uga_get_info_and_fini,
2N/A .set_palette = grub_video_fb_set_palette,
2N/A .get_palette = grub_video_fb_get_palette,
2N/A .set_viewport = grub_video_fb_set_viewport,
2N/A .get_viewport = grub_video_fb_get_viewport,
2N/A .map_color = grub_video_fb_map_color,
2N/A .map_rgb = grub_video_fb_map_rgb,
2N/A .map_rgba = grub_video_fb_map_rgba,
2N/A .unmap_color = grub_video_fb_unmap_color,
2N/A .fill_rect = grub_video_fb_fill_rect,
2N/A .blit_bitmap = grub_video_fb_blit_bitmap,
2N/A .blit_render_target = grub_video_fb_blit_render_target,
2N/A .scroll = grub_video_fb_scroll,
2N/A .swap_buffers = grub_video_uga_swap_buffers,
2N/A .create_render_target = grub_video_fb_create_render_target,
2N/A .delete_render_target = grub_video_fb_delete_render_target,
2N/A .set_active_render_target = grub_video_uga_set_active_render_target,
2N/A .get_active_render_target = grub_video_fb_get_active_render_target,
2N/A };
2N/A
2N/AGRUB_MOD_INIT(efi_uga)
2N/A{
2N/A if (check_protocol ())
2N/A grub_video_register (&grub_video_uga_adapter);
2N/A}
2N/A
2N/AGRUB_MOD_FINI(efi_uga)
2N/A{
2N/A if (uga)
2N/A grub_video_unregister (&grub_video_uga_adapter);
2N/A}