diff options
Diffstat (limited to 'boot')
| -rw-r--r-- | boot/bootm.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/boot/bootm.c b/boot/bootm.c index ec74873b503..4c260a5f5ce 100644 --- a/boot/bootm.c +++ b/boot/bootm.c @@ -617,6 +617,7 @@ static int bootm_load_os(struct bootm_headers *images, int boot_progress) ulong blob_end = os.end; ulong image_start = os.image_start; ulong image_len = os.image_len; + ulong decomp_len = CONFIG_SYS_BOOTM_LEN; ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN); bool no_overlap; void *load_buf, *image_buf; @@ -625,16 +626,16 @@ static int bootm_load_os(struct bootm_headers *images, int boot_progress) /* * For a "noload" compressed kernel we need to allocate a buffer large * enough to decompress in to and use that as the load address now. - * Assume that the kernel compression is at most a factor of 4 since - * zstd almost achieves that. + * Allow up to 8x compression: this comfortably covers what zstd and xz + * achieve on real kernels, with headroom for well-compressed payloads. * Use an alignment of 2MB since this might help arm64 */ if (os.type == IH_TYPE_KERNEL_NOLOAD && os.comp != IH_COMP_NONE) { - ulong req_size = ALIGN(image_len * 4, SZ_1M); phys_addr_t addr; + decomp_len = ALIGN(image_len * 8, SZ_1M); err = lmb_alloc_mem(LMB_MEM_ALLOC_ANY, SZ_2M, &addr, - req_size, LMB_NONE); + decomp_len, LMB_NONE); if (err) return 1; @@ -642,17 +643,20 @@ static int bootm_load_os(struct bootm_headers *images, int boot_progress) images->os.load = (ulong)addr; images->ep = (ulong)addr; debug("Allocated %lx bytes at %lx for kernel (size %lx) decompression\n", - req_size, load, image_len); + decomp_len, load, image_len); } load_buf = map_sysmem(load, 0); image_buf = map_sysmem(os.image_start, image_len); err = image_decomp(os.comp, load, os.image_start, os.type, load_buf, image_buf, image_len, - CONFIG_SYS_BOOTM_LEN, &load_end); + decomp_len, &load_end); if (err) { err = handle_decomp_error(os.comp, load_end - load, - CONFIG_SYS_BOOTM_LEN, err); + decomp_len, err); + if (os.type == IH_TYPE_KERNEL_NOLOAD && os.comp != IH_COMP_NONE) + printf("Note: noload decompression buffer is %#lx bytes (not CONFIG_SYS_BOOTM_LEN)\n", + decomp_len); bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); return err; } |