diff options
| -rw-r--r-- | payloads/libpayload/arch/arm64/mmu.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/payloads/libpayload/arch/arm64/mmu.c b/payloads/libpayload/arch/arm64/mmu.c index 41fb10b54d..86d9fc5ee5 100644 --- a/payloads/libpayload/arch/arm64/mmu.c +++ b/payloads/libpayload/arch/arm64/mmu.c @@ -675,6 +675,7 @@ static void mmu_extract_ranges(struct memrange *cb_ranges, static void mmu_add_fb_range(struct mmu_ranges *mmu_ranges) { struct mmu_memrange *fb_range; + static struct cb_framebuffer modified_fb; struct cb_framebuffer *framebuffer = lib_sysinfo.framebuffer; uint32_t fb_size; @@ -695,8 +696,16 @@ static void mmu_add_fb_range(struct mmu_ranges *mmu_ranges) if (fb_range == NULL) mmu_error(); - /* Set framebuffer address */ - framebuffer->physical_address = fb_range->base; + /* + * Set framebuffer address. However, one needs to use a freshly + * allocated framebuffer structure because the one in the coreboot + * table is part of a checksum calculation. Therefore, one cannot + * modify a field without recomputing the necessary checksum + * calcuation. + */ + modified_fb = *framebuffer; + modified_fb.physical_address = fb_range->base; + lib_sysinfo.framebuffer = &modified_fb; } /* |