[PATCH 0/3] scripts: Drop some crc32 implementations

[PATCH 0/3] scripts: Drop some crc32 implementations

[Sascha Hauer]

Ahmad once added crc32_be() to barebox which is unused up to now, but can
be used by several image tools in scripts/. Let's do that.

Sascha Hauer (3):
  scripts: pblimage: re-use crc32 implementation from crypto/crc32.c
  scripts: mxsimage: re-use crc32 implementation from crypto/crc32.c
  scripts: socfpga_mkimage: re-use crc32 implementation from
    crypto/crc32.c

 scripts/mxsimage.c        | 49 ++++----------------------------
 scripts/pblimage.c        | 49 ++++----------------------------
 scripts/socfpga_mkimage.c | 59 ++-------------------------------------
 3 files changed, 12 insertions(+), 145 deletions(-)

-- 
2.39.2

[PATCH 1/3] scripts: pblimage: re-use crc32 implementation from crypto/crc32.c

[Sascha Hauer]

We already have crc32_be in the tree, so re-use that.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 scripts/pblimage.c | 49 +++++-----------------------------------------
 1 file changed, 5 insertions(+), 44 deletions(-)

diff --git a/scripts/pblimage.c b/scripts/pblimage.c
index 3c3625cdd5..df5d7aef69 100644
--- a/scripts/pblimage.c
+++ b/scripts/pblimage.c
@@ -15,6 +15,10 @@
 #include <endian.h>
 #include <byteswap.h>
 
+#include "common.h"
+#include "common.c"
+#include "../crypto/crc32.c"
+
 #define roundup(x, y)		((((x) + ((y) - 1)) / (y)) * (y))
 #define PBL_ACS_CONT_CMD	0x81000000
 #define PBL_ADDR_24BIT_MASK	0x00ffffff
@@ -68,52 +72,9 @@ static char *outfile;
 static unsigned long loadaddr = 0x10000000;
 static char *infile;
 
-static uint32_t crc_table[256];
-static int crc_table_valid;
-
-static void make_crc_table(void)
-{
-	uint32_t mask;
-	int i, j;
-	uint32_t poly; /* polynomial exclusive-or pattern */
-
-	if (crc_table_valid)
-		return;
-
-	/*
-	 * the polynomial used by PBL is 1 + x1 + x2 + x4 + x5 + x7 + x8 + x10
-	 * + x11 + x12 + x16 + x22 + x23 + x26 + x32.
-	 */
-	poly = 0x04c11db7;
-
-	for (i = 0; i < 256; i++) {
-		mask = i << 24;
-		for (j = 0; j < 8; j++) {
-			if (mask & 0x80000000)
-				mask = (mask << 1) ^ poly;
-			else
-				mask <<= 1;
-		}
-		crc_table[i] = mask;
-	}
-
-	crc_table_valid = 1;
-}
-
 static uint32_t pbl_crc32(uint32_t in_crc, const char *buf, uint32_t len)
 {
-	uint32_t crc32_val;
-	int i;
-
-	make_crc_table();
-
-	crc32_val = ~in_crc;
-
-	for (i = 0; i < len; i++)
-		crc32_val = (crc32_val << 8) ^
-			crc_table[(crc32_val >> 24) ^ (*buf++ & 0xff)];
-
-	return crc32_val;
+	return crc32_be(~in_crc, buf, len);
 }
 
 /*
-- 
2.39.2

[PATCH 2/3] scripts: mxsimage: re-use crc32 implementation from crypto/crc32.c

[Sascha Hauer]

We already have crc32_be in the tree, so re-use that.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 scripts/mxsimage.c | 49 +++++-----------------------------------------
 1 file changed, 5 insertions(+), 44 deletions(-)

diff --git a/scripts/mxsimage.c b/scripts/mxsimage.c
index d33c4c8a0a..cebbab25ad 100644
--- a/scripts/mxsimage.c
+++ b/scripts/mxsimage.c
@@ -15,6 +15,10 @@
 #include <arpa/inet.h>
 #include <linux/kernel.h>
 
+#include "common.h"
+#include "common.c"
+#include "../crypto/crc32.c"
+
 #define SB_BLOCK_SIZE		16
 
 static char *prepfile;
@@ -376,38 +380,6 @@ struct sb_image_ctx {
  *                         JTAG/SPI2_EEPROM/SD_SSP0/SD_SSP1
  */
 
-static uint32_t crc_table[256];
-static int crc_table_valid;
-
-static void make_crc_table(void)
-{
-	uint32_t mask;
-	int i, j;
-	uint32_t poly; /* polynomial exclusive-or pattern */
-
-	if (crc_table_valid)
-		return;
-
-	/*
-	 * the polynomial used by PBL is 1 + x1 + x2 + x4 + x5 + x7 + x8 + x10
-	 * + x11 + x12 + x16 + x22 + x23 + x26 + x32.
-	 */
-	poly = 0x04c11db7;
-
-	for (i = 0; i < 256; i++) {
-		mask = i << 24;
-		for (j = 0; j < 8; j++) {
-			if (mask & 0x80000000)
-				mask = (mask << 1) ^ poly;
-			else
-				mask <<= 1;
-		}
-		crc_table[i] = mask;
-	}
-
-	crc_table_valid = 1;
-}
-
 /*
  * OpenSSL 1.1.0 and newer compatibility functions:
  * https://wiki.openssl.org/index.php/1.1_API_Changes
@@ -441,18 +413,7 @@ int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx)
 
 static uint32_t pbl_crc32(uint32_t in_crc, const char *buf, uint32_t len)
 {
-	uint32_t crc32_val;
-	int i;
-
-	make_crc_table();
-
-	crc32_val = ~in_crc;
-
-	for (i = 0; i < len; i++)
-		crc32_val = (crc32_val << 8) ^
-			crc_table[(crc32_val >> 24) ^ (*buf++ & 0xff)];
-
-	return crc32_val;
+	return crc32_be(~in_crc, buf, len);
 }
 /*
  * AES libcrypto
-- 
2.39.2

[PATCH 3/3] scripts: socfpga_mkimage: re-use crc32 implementation from crypto/crc32.c

[Sascha Hauer]

We already have crc32_be in the tree, so re-use that.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 scripts/socfpga_mkimage.c | 59 ++-------------------------------------
 1 file changed, 2 insertions(+), 57 deletions(-)

diff --git a/scripts/socfpga_mkimage.c b/scripts/socfpga_mkimage.c
index e88e75962f..0878c3f261 100644
--- a/scripts/socfpga_mkimage.c
+++ b/scripts/socfpga_mkimage.c
@@ -12,6 +12,7 @@
 
 #include "common.h"
 #include "common.c"
+#include "../crypto/crc32.c"
 
 #define VALIDATION_WORD 0x31305341
 
@@ -68,62 +69,6 @@ static uint32_t bb_header[] = {
 	0xea00006b,	/* entry. b 0x200 (offset may be adjusted) */
 };
 
-static const uint32_t crc_table[256] = {
-	0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
-	0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
-	0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7,
-	0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
-	0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3,
-	0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
-	0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef,
-	0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
-	0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb,
-	0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
-	0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0,
-	0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
-	0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4,
-	0x0808d07d, 0x0cc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
-	0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08,
-	0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
-	0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc,
-	0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
-	0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050,
-	0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
-	0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34,
-	0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
-	0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1,
-	0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
-	0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5,
-	0x3f9b762c, 0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
-	0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9,
-	0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
-	0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd,
-	0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
-	0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71,
-	0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
-	0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2,
-	0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
-	0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e,
-	0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
-	0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a,
-	0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
-	0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676,
-	0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
-	0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662,
-	0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
-	0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
-};
-
-static uint32_t crc32(uint32_t crc, void *_buf, int length)
-{
-	uint8_t *buf = _buf;
-
-	while (length--)
-		crc = crc << 8 ^ crc_table[(crc >> 24 ^ *(buf++)) & 0xff];
-
-	return crc;
-}
-
 /* Create an ARM relative branch instuction
  * branch is where the instruction will be placed and dest points to where
  * it should branch too. */
@@ -215,7 +160,7 @@ static int add_socfpga_header(void *buf, size_t size, unsigned start_addr, unsig
 
 	crc = buf + size - sizeof(uint32_t);
 
-	*crc = crc32(0xffffffff, buf, size - sizeof(uint32_t));
+	*crc = crc32_be(0xffffffff, buf, size - sizeof(uint32_t));
 	*crc ^= 0xffffffff;
 
 	return 0;
-- 
2.39.2