From 67bc59df05331eaac56cd0a00219d1386130aee2 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sat, 25 Sep 2021 07:03:07 -0600 Subject: Add support for an owned buffer When passing a data buffer back from a function, it is not always clear who owns the buffer, i.e. who is responsible for freeing the memory used. An example of this is where multiple files are decompressed from the firmware image, using a temporary buffer for reading (since the compressed data has to live somewhere) and producing a temporary or permanent buffer with the resuilts. Where the firmware image can be memory-mapped, as on x86, the compressed data does not need to be buffered, but the complexity of having a buffer which is either allocated or not, makes the code hard to understand. Introduce a new 'abuf' which supports simple buffer operations: - encapsulating a buffer and its size - either allocated with malloc() or not - able to be reliably freed if necessary - able to be converted to an allocated buffer if needed This simple API makes it easier to deal with allocated and memory-mapped buffers. Signed-off-by: Simon Glass --- lib/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'lib/Makefile') diff --git a/lib/Makefile b/lib/Makefile index 962470f4962..454396f101b 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -134,6 +134,7 @@ obj-$(CONFIG_OID_REGISTRY) += oid_registry.o obj-$(CONFIG_SSCANF) += sscanf.o endif +obj-y += abuf.o obj-y += date.o obj-y += rtc-lib.o obj-$(CONFIG_LIB_ELF) += elf.o -- cgit v1.3.1 From e7d285b2f38202f9d7ffbdcae59283f08bafd8b9 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sat, 25 Sep 2021 19:43:24 -0600 Subject: image: Use the correct checks for CRC32 Add a host Kconfig for CRC32. With this we can use CONFIG_IS_ENABLED(CRC32) directly in the host build, so drop the unnecessary indirection. Add a few more conditions to SPL_CRC32 to avoid build failures as well as TPL_CRC32. Also update hash.c to make crc32 optional and to actually take notice of SPL_CRC32. Signed-off-by: Simon Glass Reviewed-by: Alexandru Gagniuc --- common/hash.c | 13 ++++++++----- common/spl/Kconfig | 13 ++++++++++++- lib/Kconfig | 5 +++++ lib/Makefile | 4 +--- tools/Kconfig | 5 +++++ 5 files changed, 31 insertions(+), 9 deletions(-) (limited to 'lib/Makefile') diff --git a/common/hash.c b/common/hash.c index 3b591ba09e3..79202e18a2a 100644 --- a/common/hash.c +++ b/common/hash.c @@ -178,7 +178,7 @@ static int hash_finish_crc16_ccitt(struct hash_algo *algo, void *ctx, return 0; } -static int hash_init_crc32(struct hash_algo *algo, void **ctxp) +static int __maybe_unused hash_init_crc32(struct hash_algo *algo, void **ctxp) { uint32_t *ctx = malloc(sizeof(uint32_t)); *ctx = 0; @@ -186,15 +186,16 @@ static int hash_init_crc32(struct hash_algo *algo, void **ctxp) return 0; } -static int hash_update_crc32(struct hash_algo *algo, void *ctx, - const void *buf, unsigned int size, int is_last) +static int __maybe_unused hash_update_crc32(struct hash_algo *algo, void *ctx, + const void *buf, unsigned int size, + int is_last) { *((uint32_t *)ctx) = crc32(*((uint32_t *)ctx), buf, size); return 0; } -static int hash_finish_crc32(struct hash_algo *algo, void *ctx, void *dest_buf, - int size) +static int __maybe_unused hash_finish_crc32(struct hash_algo *algo, void *ctx, + void *dest_buf, int size) { if (size < algo->digest_size) return -1; @@ -311,6 +312,7 @@ static struct hash_algo hash_algo[] = { .hash_update = hash_update_crc16_ccitt, .hash_finish = hash_finish_crc16_ccitt, }, +#if CONFIG_IS_ENABLED(CRC32) { .name = "crc32", .digest_size = 4, @@ -320,6 +322,7 @@ static struct hash_algo hash_algo[] = { .hash_update = hash_update_crc32, .hash_finish = hash_finish_crc32, }, +#endif }; /* Try to minimize code size for boards that don't want much hashing */ diff --git a/common/spl/Kconfig b/common/spl/Kconfig index 8a8a971a91e..17ce2f6b615 100644 --- a/common/spl/Kconfig +++ b/common/spl/Kconfig @@ -419,7 +419,8 @@ config SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION config SPL_CRC32 bool "Support CRC32" - default y if SPL_LEGACY_IMAGE_SUPPORT + default y if SPL_LEGACY_IMAGE_SUPPORT || SPL_EFI_PARTITION + default y if SPL_ENV_SUPPORT || TPL_BLOBLIST help Enable this to support CRC32 in uImages or FIT images within SPL. This is a 32-bit checksum value that can be used to verify images. @@ -1419,6 +1420,16 @@ config TPL_BOOTROM_SUPPORT BOOT_DEVICE_BOOTROM (or fall-through to the next boot device in the boot device list, if not implemented for a given board) +config TPL_CRC32 + bool "Support CRC32 in TPL" + default y if TPL_ENV_SUPPORT || TPL_BLOBLIST + help + Enable this to support CRC32 in uImages or FIT images within SPL. + This is a 32-bit checksum value that can be used to verify images. + For FIT images, this is the least secure type of checksum, suitable + for detected accidental image corruption. For secure applications you + should consider SHA1 or SHA256. + config TPL_DRIVERS_MISC bool "Support misc drivers in TPL" help diff --git a/lib/Kconfig b/lib/Kconfig index 64765acfa61..70bf8e7a464 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -496,6 +496,11 @@ config SPL_MD5 security applications, but it can be useful for providing a quick checksum of a block of data. +config CRC32 + def_bool y + help + Enables CRC32 support in U-Boot. This is normally required. + config CRC32C bool diff --git a/lib/Makefile b/lib/Makefile index 454396f101b..5ddbc77ed6d 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -96,9 +96,7 @@ obj-y += display_options.o CFLAGS_display_options.o := $(if $(BUILD_TAG),-DBUILD_TAG='"$(BUILD_TAG)"') obj-$(CONFIG_BCH) += bch.o obj-$(CONFIG_MMC_SPI) += crc7.o -#ifndef CONFIG_TPL_BUILD -obj-y += crc32.o -#endif +obj-$(CONFIG_$(SPL_TPL_)CRC32) += crc32.o obj-$(CONFIG_CRC32C) += crc32c.o obj-y += ctype.o obj-y += div64.o diff --git a/tools/Kconfig b/tools/Kconfig index 8685c800f93..91ce8ae3e51 100644 --- a/tools/Kconfig +++ b/tools/Kconfig @@ -9,6 +9,11 @@ config MKIMAGE_DTC_PATH some cases the system dtc may not support all required features and the path to a different version should be given here. +config TOOLS_CRC32 + def_bool y + help + Enable CRC32 support in the tools builds + config TOOLS_LIBCRYPTO bool "Use OpenSSL's libcrypto library for host tools" default y -- cgit v1.3.1