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| Rev 1221 | Rev 1233 | ||
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| Line 31... | Line 31... | ||
| 31 | #include "atom.h" |
31 | #include "atom.h" |
| Line 32... | Line 32... | ||
| 32 | 32 | ||
| 33 | /* |
33 | /* |
| 34 | * BIOS. |
34 | * BIOS. |
| - | 35 | */ |
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| - | 36 | ||
| - | 37 | /* If you boot an IGP board with a discrete card as the primary, |
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| - | 38 | * the IGP rom is not accessible via the rom bar as the IGP rom is |
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| - | 39 | * part of the system bios. On boot, the system bios puts a |
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| - | 40 | * copy of the igp rom at the start of vram if a discrete card is |
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| - | 41 | * present. |
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| - | 42 | */ |
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| - | 43 | static bool igp_read_bios_from_vram(struct radeon_device *rdev) |
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| - | 44 | { |
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| - | 45 | uint8_t __iomem *bios; |
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| - | 46 | resource_size_t vram_base; |
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| - | 47 | resource_size_t size = 256 * 1024; /* ??? */ |
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| - | 48 | ||
| - | 49 | rdev->bios = NULL; |
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| - | 50 | vram_base = drm_get_resource_start(rdev->ddev, 0); |
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| - | 51 | bios = ioremap(vram_base, size); |
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| - | 52 | if (!bios) { |
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| - | 53 | DRM_ERROR("Unable to mmap vram\n"); |
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| - | 54 | return false; |
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| - | 55 | } |
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| - | 56 | ||
| - | 57 | if (size == 0 || bios[0] != 0x55 || bios[1] != 0xaa) { |
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| - | 58 | iounmap(bios); |
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| - | 59 | DRM_ERROR("bad rom signature\n"); |
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| - | 60 | return false; |
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| - | 61 | } |
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| - | 62 | rdev->bios = kmalloc(size, GFP_KERNEL); |
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| - | 63 | if (rdev->bios == NULL) { |
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| - | 64 | iounmap(bios); |
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| - | 65 | DRM_ERROR("kmalloc failed\n"); |
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| - | 66 | return false; |
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| - | 67 | } |
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| - | 68 | memcpy(rdev->bios, bios, size); |
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| - | 69 | iounmap(bios); |
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| - | 70 | return true; |
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| - | 71 | } |
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| 35 | */ |
72 | |
| 36 | static bool radeon_read_bios(struct radeon_device *rdev) |
73 | static bool radeon_read_bios(struct radeon_device *rdev) |
| 37 | { |
74 | { |
| 38 | uint8_t __iomem *bios; |
75 | uint8_t __iomem *bios; |
| Line 340... | Line 377... | ||
| 340 | return r; |
377 | return r; |
| 341 | } |
378 | } |
| Line 342... | Line 379... | ||
| 342 | 379 | ||
| 343 | static bool radeon_read_disabled_bios(struct radeon_device *rdev) |
380 | static bool radeon_read_disabled_bios(struct radeon_device *rdev) |
| - | 381 | { |
|
| - | 382 | if (rdev->flags & RADEON_IS_IGP) |
|
| 344 | { |
383 | return igp_read_bios_from_vram(rdev); |
| 345 | if (rdev->family >= CHIP_RV770) |
384 | else if (rdev->family >= CHIP_RV770) |
| 346 | return r700_read_disabled_bios(rdev); |
385 | return r700_read_disabled_bios(rdev); |
| 347 | else if (rdev->family >= CHIP_R600) |
386 | else if (rdev->family >= CHIP_R600) |
| 348 | return r600_read_disabled_bios(rdev); |
387 | return r600_read_disabled_bios(rdev); |
| 349 | else if (rdev->family >= CHIP_RS600) |
388 | else if (rdev->family >= CHIP_RS600) |
| Line 355... | Line 394... | ||
| 355 | bool radeon_get_bios(struct radeon_device *rdev) |
394 | bool radeon_get_bios(struct radeon_device *rdev) |
| 356 | { |
395 | { |
| 357 | bool r; |
396 | bool r; |
| 358 | uint16_t tmp; |
397 | uint16_t tmp; |
| Line -... | Line 398... | ||
| - | 398 | ||
| - | 399 | if (rdev->flags & RADEON_IS_IGP) { |
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| - | 400 | r = igp_read_bios_from_vram(rdev); |
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| - | 401 | if (r == false) |
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| - | 402 | r = radeon_read_bios(rdev); |
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| 359 | 403 | } else |
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| 360 | r = radeon_read_bios(rdev); |
404 | r = radeon_read_bios(rdev); |
| 361 | if (r == false) { |
405 | if (r == false) { |
| 362 | r = radeon_read_disabled_bios(rdev); |
406 | r = radeon_read_disabled_bios(rdev); |
| 363 | } |
407 | } |