arm:at91: enable ROM loadable atmel image

[u-boot] / tools / atmel_pmecc_params.c

diff --git a/tools/atmel_pmecc_params.c b/tools/atmel_pmecc_params.c
new file mode 100644 (file)
index 0000000..8eaf27f
--- /dev/null
+++ b/tools/atmel_pmecc_params.c
@@ -0,0 +1,51 @@
+/*
+ * (C) Copyright 2014 Andreas Bießmann <andreas.devel@googlemail.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+/*
+ * This is a host tool for generating an appropriate string out of board
+ * configuration. The string is required for correct generation of PMECC
+ * header which in turn is required for NAND flash booting of Atmel AT91 style
+ * hardware.
+ *
+ * See doc/README.atmel_pmecc for more information.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+
+static int pmecc_get_ecc_bytes(int cap, int sector_size)
+{
+       int m = 12 + sector_size / 512;
+       return (m * cap + 7) / 8;
+}
+
+int main(int argc, char *argv[])
+{
+       unsigned int use_pmecc = 0;
+       unsigned int sector_per_page;
+       unsigned int sector_size = CONFIG_PMECC_SECTOR_SIZE;
+       unsigned int oob_size = CONFIG_SYS_NAND_OOBSIZE;
+       unsigned int ecc_bits = CONFIG_PMECC_CAP;
+       unsigned int ecc_offset;
+
+#ifdef CONFIG_ATMEL_NAND_HW_PMECC
+       use_pmecc = 1;
+#endif
+
+       sector_per_page = CONFIG_SYS_NAND_PAGE_SIZE / CONFIG_PMECC_SECTOR_SIZE;
+       ecc_offset = oob_size -
+               pmecc_get_ecc_bytes(ecc_bits, sector_size) * sector_per_page;
+
+       printf("usePmecc=%d,", use_pmecc);
+       printf("sectorPerPage=%d,", sector_per_page);
+       printf("sectorSize=%d,", sector_size);
+       printf("spareSize=%d,", oob_size);
+       printf("eccBits=%d,", ecc_bits);
+       printf("eccOffset=%d", ecc_offset);
+       printf("\n");
+
+       exit(EXIT_SUCCESS);
+}