mkimage: Fix strict-aliasing compiler warning

[J-u-boot.git] / tools / envcrc.c

diff --git a/tools/envcrc.c b/tools/envcrc.c
index 2f40051278c47494e4dd3a49895a848e7d683c1e..c8c50d71962456e21724f68c733e2e863ff41fb9 100644 (file)
--- a/tools/envcrc.c
+++ b/tools/envcrc.c
@@ -21,9 +21,11 @@
  * MA 02111-1307 USA
  */
 
+#include <errno.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #ifndef __ASSEMBLY__
@@ -34,37 +36,37 @@
 #undef __ASSEMBLY__
 
 #if defined(CONFIG_ENV_IS_IN_FLASH)
-# ifndef  CFG_ENV_ADDR
-#  define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
+# ifndef  CONFIG_ENV_ADDR
+#  define CONFIG_ENV_ADDR      (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
 # endif
-# ifndef  CFG_ENV_OFFSET
-#  define CFG_ENV_OFFSET (CFG_ENV_ADDR - CFG_FLASH_BASE)
+# ifndef  CONFIG_ENV_OFFSET
+#  define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE)
 # endif
-# if !defined(CFG_ENV_ADDR_REDUND) && defined(CFG_ENV_OFFSET_REDUND)
-#  define CFG_ENV_ADDR_REDUND  (CFG_FLASH_BASE + CFG_ENV_OFFSET_REDUND)
+# if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND)
+#  define CONFIG_ENV_ADDR_REDUND       (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND)
 # endif
-# ifndef  CFG_ENV_SIZE
-#  define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
+# ifndef  CONFIG_ENV_SIZE
+#  define CONFIG_ENV_SIZE      CONFIG_ENV_SECT_SIZE
 # endif
-# if defined(CFG_ENV_ADDR_REDUND) && !defined(CFG_ENV_SIZE_REDUND)
-#  define CFG_ENV_SIZE_REDUND  CFG_ENV_SIZE
+# if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND)
+#  define CONFIG_ENV_SIZE_REDUND       CONFIG_ENV_SIZE
 # endif
-# if (CFG_ENV_ADDR >= CFG_MONITOR_BASE) && \
-     ((CFG_ENV_ADDR + CFG_ENV_SIZE) <= (CFG_MONITOR_BASE + CFG_MONITOR_LEN))
+# if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \
+     ((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN))
 #  define ENV_IS_EMBEDDED      1
 # endif
-# if defined(CFG_ENV_ADDR_REDUND) || defined(CFG_ENV_OFFSET_REDUND)
-#  define CFG_REDUNDAND_ENVIRONMENT    1
+# if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
+#  define CONFIG_SYS_REDUNDAND_ENVIRONMENT     1
 # endif
 #endif /* CONFIG_ENV_IS_IN_FLASH */
 
-#ifdef CFG_REDUNDAND_ENVIRONMENT
+#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
 # define ENV_HEADER_SIZE       (sizeof(uint32_t) + 1)
 #else
 # define ENV_HEADER_SIZE       (sizeof(uint32_t))
 #endif
 
-#define ENV_SIZE (CFG_ENV_SIZE - ENV_HEADER_SIZE)
+#define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
 
 
 extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int);
@@ -77,19 +79,57 @@ extern unsigned char environment;
 int main (int argc, char **argv)
 {
 #ifdef ENV_IS_EMBEDDED
+       unsigned char pad = 0x00;
        uint32_t crc;
        unsigned char *envptr = &environment,
                *dataptr = envptr + ENV_HEADER_SIZE;
        unsigned int datasize = ENV_SIZE;
+       unsigned int eoe;
+
+       if (argv[1] && !strncmp(argv[1], "--binary", 8)) {
+               int ipad = 0xff;
+               if (argv[1][8] == '=')
+                       sscanf(argv[1] + 9, "%i", &ipad);
+               pad = ipad;
+       }
+
+       if (pad) {
+               /* find the end of env */
+               for (eoe = 0; eoe < datasize - 1; ++eoe)
+                       if (!dataptr[eoe] && !dataptr[eoe+1]) {
+                               eoe += 2;
+                               break;
+                       }
+               if (eoe < datasize - 1)
+                       memset(dataptr + eoe, pad, datasize - eoe);
+       }
 
        crc = crc32 (0, dataptr, datasize);
 
        /* Check if verbose mode is activated passing a parameter to the program */
        if (argc > 1) {
-               printf ("CRC32 from offset %08X to %08X of environment = %08X\n",
-                       (unsigned int) (dataptr - envptr),
-                       (unsigned int) (dataptr - envptr) + datasize,
-                       crc);
+               if (!strncmp(argv[1], "--binary", 8)) {
+                       int le = (argc > 2 ? !strcmp(argv[2], "le") : 1);
+                       size_t i, start, end, step;
+                       if (le) {
+                               start = 0;
+                               end = ENV_HEADER_SIZE;
+                               step = 1;
+                       } else {
+                               start = ENV_HEADER_SIZE - 1;
+                               end = -1;
+                               step = -1;
+                       }
+                       for (i = start; i != end; i += step)
+                               printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8));
+                       if (fwrite(dataptr, 1, datasize, stdout) != datasize)
+                               fprintf(stderr, "fwrite() failed: %s\n", strerror(errno));
+               } else {
+                       printf("CRC32 from offset %08X to %08X of environment = %08X\n",
+                               (unsigned int) (dataptr - envptr),
+                               (unsigned int) (dataptr - envptr) + datasize,
+                               crc);
+               }
        } else {
                printf ("0x%08X\n", crc);
        }