[e16e8f2] | 1 | /* |
---|
| 2 | * Copyright 2011-2014 Intel Corporation - All Rights Reserved |
---|
| 3 | */ |
---|
| 4 | |
---|
| 5 | #include <syslinux/linux.h> |
---|
| 6 | #include "efi.h" |
---|
| 7 | #include <string.h> |
---|
| 8 | |
---|
| 9 | extern EFI_GUID GraphicsOutputProtocol; |
---|
| 10 | |
---|
| 11 | static uint32_t console_default_attribute; |
---|
| 12 | static bool console_default_cursor; |
---|
| 13 | |
---|
| 14 | /* |
---|
| 15 | * We want to restore the console state when we boot a kernel or return |
---|
| 16 | * to the firmware. |
---|
| 17 | */ |
---|
| 18 | void efi_console_save(void) |
---|
| 19 | { |
---|
| 20 | SIMPLE_TEXT_OUTPUT_INTERFACE *out = ST->ConOut; |
---|
| 21 | SIMPLE_TEXT_OUTPUT_MODE *mode = out->Mode; |
---|
| 22 | |
---|
| 23 | console_default_attribute = mode->Attribute; |
---|
| 24 | console_default_cursor = mode->CursorVisible; |
---|
| 25 | } |
---|
| 26 | |
---|
| 27 | void efi_console_restore(void) |
---|
| 28 | { |
---|
| 29 | SIMPLE_TEXT_OUTPUT_INTERFACE *out = ST->ConOut; |
---|
| 30 | |
---|
| 31 | uefi_call_wrapper(out->SetAttribute, 2, out, console_default_attribute); |
---|
| 32 | uefi_call_wrapper(out->EnableCursor, 2, out, console_default_cursor); |
---|
| 33 | } |
---|
| 34 | |
---|
| 35 | __export void writechr(char data) |
---|
| 36 | { |
---|
| 37 | efi_write_char(data, 0); |
---|
| 38 | } |
---|
| 39 | |
---|
| 40 | static inline EFI_STATUS open_protocol(EFI_HANDLE handle, EFI_GUID *protocol, |
---|
| 41 | void **interface, EFI_HANDLE agent, |
---|
| 42 | EFI_HANDLE controller, UINT32 attributes) |
---|
| 43 | { |
---|
| 44 | return uefi_call_wrapper(BS->OpenProtocol, 6, handle, protocol, |
---|
| 45 | interface, agent, controller, attributes); |
---|
| 46 | } |
---|
| 47 | |
---|
| 48 | static inline EFI_STATUS |
---|
| 49 | gop_query_mode(EFI_GRAPHICS_OUTPUT_PROTOCOL *gop, UINTN *size, |
---|
| 50 | EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **info) |
---|
| 51 | { |
---|
| 52 | return uefi_call_wrapper(gop->QueryMode, 4, gop, |
---|
| 53 | gop->Mode->Mode, size, info); |
---|
| 54 | } |
---|
| 55 | |
---|
| 56 | static inline void bit_mask(uint32_t mask, uint8_t *pos, uint8_t *size) |
---|
| 57 | { |
---|
| 58 | *pos = 0; |
---|
| 59 | *size = 0; |
---|
| 60 | |
---|
| 61 | if (mask) { |
---|
| 62 | while (!(mask & 0x1)) { |
---|
| 63 | mask >>= 1; |
---|
| 64 | (*pos)++; |
---|
| 65 | } |
---|
| 66 | |
---|
| 67 | while (mask & 0x1) { |
---|
| 68 | mask >>= 1; |
---|
| 69 | (*size)++; |
---|
| 70 | } |
---|
| 71 | } |
---|
| 72 | } |
---|
| 73 | |
---|
| 74 | static int setup_gop(struct screen_info *si) |
---|
| 75 | { |
---|
| 76 | EFI_HANDLE *handles = NULL; |
---|
| 77 | EFI_STATUS status; |
---|
| 78 | EFI_GRAPHICS_OUTPUT_PROTOCOL *gop, *found; |
---|
| 79 | EFI_GRAPHICS_PIXEL_FORMAT pixel_fmt; |
---|
| 80 | EFI_PIXEL_BITMASK pixel_info; |
---|
| 81 | uint32_t pixel_scanline; |
---|
| 82 | UINTN i, nr_handles; |
---|
| 83 | UINTN size; |
---|
| 84 | uint16_t lfb_width, lfb_height; |
---|
| 85 | uint32_t lfb_base, lfb_size; |
---|
| 86 | int err = 0; |
---|
| 87 | void **gop_handle = NULL; |
---|
| 88 | |
---|
| 89 | size = 0; |
---|
| 90 | status = uefi_call_wrapper(BS->LocateHandle, 5, ByProtocol, &GraphicsOutputProtocol, |
---|
| 91 | NULL, &size, gop_handle); |
---|
| 92 | /* LibLocateHandle handle already returns the number of handles. |
---|
| 93 | * There is no need to divide by sizeof(EFI_HANDLE) |
---|
| 94 | */ |
---|
| 95 | status = LibLocateHandle(ByProtocol, &GraphicsOutputProtocol, |
---|
| 96 | NULL, &nr_handles, &handles); |
---|
| 97 | if (status == EFI_BUFFER_TOO_SMALL) { |
---|
| 98 | |
---|
| 99 | handles = AllocatePool(nr_handles); |
---|
| 100 | if (!handles) |
---|
| 101 | return 0; |
---|
| 102 | |
---|
| 103 | status = LibLocateHandle(ByProtocol, &GraphicsOutputProtocol, |
---|
| 104 | NULL, &nr_handles, &handles); |
---|
| 105 | } |
---|
| 106 | if (status != EFI_SUCCESS) |
---|
| 107 | goto out; |
---|
| 108 | |
---|
| 109 | found = NULL; |
---|
| 110 | for (i = 0; i < nr_handles; i++) { |
---|
| 111 | EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; |
---|
| 112 | EFI_PCI_IO *pciio = NULL; |
---|
| 113 | EFI_HANDLE *h = handles[i]; |
---|
| 114 | |
---|
| 115 | status = uefi_call_wrapper(BS->HandleProtocol, 3, h, |
---|
| 116 | &GraphicsOutputProtocol, (void **)&gop); |
---|
| 117 | if (status != EFI_SUCCESS) |
---|
| 118 | continue; |
---|
| 119 | uefi_call_wrapper(BS->HandleProtocol, 3, h, |
---|
| 120 | &PciIoProtocol, (void **)&pciio); |
---|
| 121 | status = gop_query_mode(gop, &size, &info); |
---|
| 122 | if (status == EFI_SUCCESS && (!found || pciio)) { |
---|
| 123 | lfb_width = info->HorizontalResolution; |
---|
| 124 | lfb_height = info->VerticalResolution; |
---|
| 125 | lfb_base = gop->Mode->FrameBufferBase; |
---|
| 126 | lfb_size = gop->Mode->FrameBufferSize; |
---|
| 127 | pixel_fmt = info->PixelFormat; |
---|
| 128 | pixel_info = info->PixelInformation; |
---|
| 129 | pixel_scanline = info->PixelsPerScanLine; |
---|
| 130 | if (pciio) |
---|
| 131 | break; |
---|
| 132 | found = gop; |
---|
| 133 | } |
---|
| 134 | } |
---|
| 135 | |
---|
| 136 | if (!found) |
---|
| 137 | goto out; |
---|
| 138 | |
---|
| 139 | err = 1; |
---|
| 140 | |
---|
| 141 | dprintf("setup_screen: set up screen parameters for EFI GOP\n"); |
---|
| 142 | si->orig_video_isVGA = 0x70; /* EFI framebuffer */ |
---|
| 143 | |
---|
| 144 | si->lfb_base = lfb_base; |
---|
| 145 | si->lfb_size = lfb_size; |
---|
| 146 | si->lfb_width = lfb_width; |
---|
| 147 | si->lfb_height = lfb_height; |
---|
| 148 | si->pages = 1; |
---|
| 149 | |
---|
| 150 | dprintf("setup_screen: lfb_base 0x%x lfb_size %d lfb_width %d lfb_height %d\n", lfb_base, lfb_size, lfb_width, lfb_height); |
---|
| 151 | switch (pixel_fmt) { |
---|
| 152 | case PixelRedGreenBlueReserved8BitPerColor: |
---|
| 153 | si->lfb_depth = 32; |
---|
| 154 | si->lfb_linelength = pixel_scanline * 4; |
---|
| 155 | si->red_size = 8; |
---|
| 156 | si->red_pos = 0; |
---|
| 157 | si->green_size = 8; |
---|
| 158 | si->green_pos = 8; |
---|
| 159 | si->blue_size = 8; |
---|
| 160 | si->blue_pos = 16; |
---|
| 161 | si->rsvd_size = 8; |
---|
| 162 | si->rsvd_pos = 24; |
---|
| 163 | break; |
---|
| 164 | case PixelBlueGreenRedReserved8BitPerColor: |
---|
| 165 | si->lfb_depth = 32; |
---|
| 166 | si->lfb_linelength = pixel_scanline * 4; |
---|
| 167 | si->red_size = 8; |
---|
| 168 | si->red_pos = 16; |
---|
| 169 | si->green_size = 8; |
---|
| 170 | si->green_pos = 8; |
---|
| 171 | si->blue_size = 8; |
---|
| 172 | si->blue_pos = 0; |
---|
| 173 | si->rsvd_size = 8; |
---|
| 174 | si->rsvd_pos = 24; |
---|
| 175 | break; |
---|
| 176 | case PixelBitMask: |
---|
| 177 | bit_mask(pixel_info.RedMask, &si->red_pos, |
---|
| 178 | &si->red_size); |
---|
| 179 | bit_mask(pixel_info.GreenMask, &si->green_pos, |
---|
| 180 | &si->green_size); |
---|
| 181 | bit_mask(pixel_info.BlueMask, &si->blue_pos, |
---|
| 182 | &si->blue_size); |
---|
| 183 | bit_mask(pixel_info.ReservedMask, &si->rsvd_pos, |
---|
| 184 | &si->rsvd_size); |
---|
| 185 | si->lfb_depth = si->red_size + si->green_size + |
---|
| 186 | si->blue_size + si->rsvd_size; |
---|
| 187 | si->lfb_linelength = (pixel_scanline * si->lfb_depth) / 8; |
---|
| 188 | break; |
---|
| 189 | default: |
---|
| 190 | si->lfb_depth = 4;; |
---|
| 191 | si->lfb_linelength = si->lfb_width / 2; |
---|
| 192 | si->red_size = 0; |
---|
| 193 | si->red_pos = 0; |
---|
| 194 | si->green_size = 0; |
---|
| 195 | si->green_pos = 0; |
---|
| 196 | si->blue_size = 0; |
---|
| 197 | si->blue_pos = 0; |
---|
| 198 | si->rsvd_size = 0; |
---|
| 199 | si->rsvd_pos = 0; |
---|
| 200 | break; |
---|
| 201 | } |
---|
| 202 | dprintf("setup_screen: depth %d line %d rpos %d rsize %d gpos %d gsize %d bpos %d bsize %d rsvpos %d rsvsize %d\n", |
---|
| 203 | si->lfb_depth, si->lfb_linelength, |
---|
| 204 | si->red_pos, si->red_size, |
---|
| 205 | si->green_pos, si->green_size, |
---|
| 206 | si->blue_pos, si->blue_size, |
---|
| 207 | si->blue_pos, si->blue_size, |
---|
| 208 | si->rsvd_pos, si->rsvd_size); |
---|
| 209 | |
---|
| 210 | out: |
---|
| 211 | if (handles) FreePool(handles); |
---|
| 212 | |
---|
| 213 | return err; |
---|
| 214 | } |
---|
| 215 | |
---|
| 216 | #define EFI_UGA_PROTOCOL_GUID \ |
---|
| 217 | { \ |
---|
| 218 | 0x982c298b, 0xf4fa, 0x41cb, {0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 } \ |
---|
| 219 | } |
---|
| 220 | |
---|
| 221 | typedef struct _EFI_UGA_DRAW_PROTOCOL EFI_UGA_DRAW_PROTOCOL; |
---|
| 222 | |
---|
| 223 | typedef |
---|
| 224 | EFI_STATUS |
---|
| 225 | (EFIAPI *EFI_UGA_DRAW_PROTOCOL_GET_MODE) ( |
---|
| 226 | IN EFI_UGA_DRAW_PROTOCOL *This, |
---|
| 227 | OUT UINT32 *Width, |
---|
| 228 | OUT UINT32 *Height, |
---|
| 229 | OUT UINT32 *Depth, |
---|
| 230 | OUT UINT32 *Refresh |
---|
| 231 | ) |
---|
| 232 | ; |
---|
| 233 | |
---|
| 234 | struct _EFI_UGA_DRAW_PROTOCOL { |
---|
| 235 | EFI_UGA_DRAW_PROTOCOL_GET_MODE GetMode; |
---|
| 236 | void *SetMode; |
---|
| 237 | void *Blt; |
---|
| 238 | }; |
---|
| 239 | |
---|
| 240 | static int setup_uga(struct screen_info *si) |
---|
| 241 | { |
---|
| 242 | EFI_UGA_DRAW_PROTOCOL *uga, *first; |
---|
| 243 | EFI_GUID UgaProtocol = EFI_UGA_PROTOCOL_GUID; |
---|
| 244 | UINT32 width, height; |
---|
| 245 | EFI_STATUS status; |
---|
| 246 | EFI_HANDLE *handles; |
---|
| 247 | UINTN i, nr_handles; |
---|
| 248 | int rv = 0; |
---|
| 249 | |
---|
| 250 | status = LibLocateHandle(ByProtocol, &UgaProtocol, |
---|
| 251 | NULL, &nr_handles, &handles); |
---|
| 252 | if (status != EFI_SUCCESS) |
---|
| 253 | return rv; |
---|
| 254 | |
---|
| 255 | for (i = 0; i < nr_handles; i++) { |
---|
| 256 | EFI_PCI_IO *pciio = NULL; |
---|
| 257 | EFI_HANDLE *handle = handles[i]; |
---|
| 258 | UINT32 w, h, depth, refresh; |
---|
| 259 | |
---|
| 260 | status = uefi_call_wrapper(BS->HandleProtocol, 3, handle, |
---|
| 261 | &UgaProtocol, (void **)&uga); |
---|
| 262 | if (status != EFI_SUCCESS) |
---|
| 263 | continue; |
---|
| 264 | |
---|
| 265 | uefi_call_wrapper(BS->HandleProtocol, 3, handle, |
---|
| 266 | &PciIoProtocol, (void **)&pciio); |
---|
| 267 | |
---|
| 268 | status = uefi_call_wrapper(uga->GetMode, 5, uga, &w, &h, |
---|
| 269 | &depth, &refresh); |
---|
| 270 | |
---|
| 271 | if (status == EFI_SUCCESS && (!first || pciio)) { |
---|
| 272 | width = w; |
---|
| 273 | height = h; |
---|
| 274 | |
---|
| 275 | if (pciio) |
---|
| 276 | break; |
---|
| 277 | |
---|
| 278 | first = uga; |
---|
| 279 | } |
---|
| 280 | } |
---|
| 281 | |
---|
| 282 | if (!first) |
---|
| 283 | goto out; |
---|
| 284 | rv = 1; |
---|
| 285 | |
---|
| 286 | si->orig_video_isVGA = 0x70; /* EFI framebuffer */ |
---|
| 287 | |
---|
| 288 | si->lfb_depth = 32; |
---|
| 289 | si->lfb_width = width; |
---|
| 290 | si->lfb_height = height; |
---|
| 291 | |
---|
| 292 | si->red_size = 8; |
---|
| 293 | si->red_pos = 16; |
---|
| 294 | si->green_size = 8; |
---|
| 295 | si->green_pos = 8; |
---|
| 296 | si->blue_size = 8; |
---|
| 297 | si->blue_pos = 0; |
---|
| 298 | si->rsvd_size = 8; |
---|
| 299 | si->rsvd_pos = 24; |
---|
| 300 | |
---|
| 301 | out: |
---|
| 302 | FreePool(handles); |
---|
| 303 | return rv; |
---|
| 304 | } |
---|
| 305 | |
---|
| 306 | void setup_screen(struct screen_info *si) |
---|
| 307 | { |
---|
| 308 | memset(si, 0, sizeof(*si)); |
---|
| 309 | |
---|
| 310 | if (!setup_gop(si)) |
---|
| 311 | setup_uga(si); |
---|
| 312 | } |
---|