Linux_SDK_V0.9.5Linux_SDK_V0.9.5

1 files changed, 50 insertions, 0 deletions

diff --git a/tools/atmel_pmecc_params.c b/tools/atmel_pmecc_params.c
new file mode 100644
index 00000000..a4ae03f0
--- /dev/null
+++ b/tools/atmel_pmecc_params.c
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2014 Andreas Bießmann <andreas@biessmann.org>
+ */
+
+/*
+ * 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);
+}