s5p6442: smdk6442: Add checksum

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>

diff --git a/onenand_ipl/board/samsung/smdk6442/Makefile b/onenand_ipl/board/samsung/smdk6442/Makefile
index 1efe509..c423729 100644 (file)
--- a/onenand_ipl/board/samsung/smdk6442/Makefile
+++ b/onenand_ipl/board/samsung/smdk6442/Makefile
@@ -36,8 +36,9 @@ ALL   = $(onenandobj)onenand-ipl $(onenandobj)onenand-ipl.bin $(onenandobj)onenand
 
 all:   $(obj).depend $(ALL)
 
-$(onenandobj)onenand-ipl-8k.bin:       $(onenandobj)onenand-ipl
+$(onenandobj)onenand-ipl-8k.bin:       $(onenandobj)onenand-ipl checksum
        $(OBJCOPY) ${OBJCFLAGS} --pad-to=$(TEXT_BASE8K) -O binary $< $@
+       $(onenandobj)/board/$(BOARDDIR)/checksum $@
 
 $(onenandobj)onenand-ipl.bin:  $(onenandobj)onenand-ipl
        $(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
@@ -46,6 +47,9 @@ $(onenandobj)onenand-ipl:     $(OBJS)
        cd $(LNDIR) && $(LD) $(LDFLAGS) $$UNDEF_SYM $(__OBJS) \
                -Map $@.map -o $@
 
+checksum: checksum.c
+       $(HOSTCC) -o $@ $<
+
 # create symbolic links from common files
 
 # from cpu directory

diff --git a/onenand_ipl/board/samsung/smdk6442/checksum.c b/onenand_ipl/board/samsung/smdk6442/checksum.c
new file mode 100644 (file)
index 0000000..22c75e5
--- /dev/null
+++ b/onenand_ipl/board/samsung/smdk6442/checksum.c
@@ -0,0 +1,146 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <err.h>
+
+#ifndef SZ_8K
+#define SZ_8K          0x2000
+#endif
+#ifndef SZ_14K
+#define SZ_14K         0x3800
+#endif
+
+#define PAGE_SIZE      0x800
+/*
+ * For 2KiB page OneNAND
+ * +------+------+------+------+
+ * | 2KiB | 2KiB | 2KiB | 2KiB |
+ * +------+------+------+------+
+ */
+#define CHECKSUM_8K    (SZ_8K - 0x4)
+/*
+ * For 4KiB page OneNAND
+ * +----------------+----------------+----------------+----------------+
+ * | 2KiB, reserved | 2KiB, reserved | 2KiB, reserved | 2KiB, reserved |
+ * +----------------+----------------+----------------+----------------+
+ */
+#define CHECKSUM_16K   (SZ_14K - 0x4)
+
+int main(int argc, char *argv[])
+{
+       int ret;
+       int i, j;
+       char buf;
+       int fd;
+       int fd0;
+       unsigned int sum = 0;
+       struct stat stat;
+       off_t size;
+       unsigned int header[4];
+       int evt;
+
+       if (argc != 3)
+               evt = 0;
+       else
+               evt = atoi(argv[2]);
+
+       fd = open(argv[1], O_RDWR);
+
+       if (fd < 0) {
+               printf("open err: %s\n", argv[1]);
+               return 1;
+       }
+
+       ret = fstat(fd, &stat);
+       if (ret < 0) {
+               perror("fstat");
+               return 1;
+       }
+
+       if (stat.st_size > SZ_8K)
+               size = CHECKSUM_16K;
+       else
+               size = CHECKSUM_8K;
+
+       for (i = 0; i < size; i++) {
+               /* evt1 doesn't have reserved area */
+               if (evt == 0) {
+                       /* if reserved area, skip the checksum */
+                       if (stat.st_size > SZ_8K) {
+                               if (i % PAGE_SIZE == 0) {
+                                       int res;
+                                       char tbuf[PAGE_SIZE];
+
+                                       res = i / PAGE_SIZE;
+                                       if (res % 2) {
+                                                       i += PAGE_SIZE;
+                                               /*
+                                                * if 1st page's reverved area,
+                                                * copy the data to 2nd page
+                                                */
+                                               if (res == 1) {
+                                                       ret = read(fd, &tbuf,
+                                                               PAGE_SIZE);
+                                                       ret = write(fd, tbuf,
+                                                               PAGE_SIZE);
+                                               }
+                                               lseek(fd, i, SEEK_SET);
+                                       }
+                               }
+                       }
+               }
+
+               ret = read(fd, &buf, 1);
+
+               if (ret < 0) {
+                       perror("read");
+                       return 1;
+               }
+
+               sum += (buf & 0xFF);
+
+#if 0
+               if (i % 16 == 0)
+                       printf("%04x: ", i);
+               printf("%02x ", buf & 0xFF);
+               if (i % 16 == 15)
+                       printf("\n");
+#endif
+       }
+
+       if (evt == 0)
+               ret = write(fd, &sum, 4);
+
+       if (ret < 0)
+               printf("read err: %s\n", ret);
+
+       close(fd);
+
+       printf("checksum = %x\n", sum);
+
+       if (evt == 1) {
+               fd0 = open("header.bin", O_RDWR | O_CREAT | O_TRUNC,
+                                       S_IRUSR | S_IWUSR);
+
+               if (fd0 < 0) {
+                       printf("open err: header.bin\n");
+                       return 1;
+               }
+
+               if (size == CHECKSUM_16K)
+                       header[0] = 0x4000;
+               else
+                       header[0] = 0x2000;
+               header[1] = 0;
+               header[2] = sum;
+               header[3] = 0;
+
+               ret = write(fd0, header, 16);
+               close(fd0);
+       }
+
+       return 0;
+}