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Extend erase block size to 18-bits in order (decrease block size to 14-bits) to handle parts with large erase blocks. From Kosma Moczek

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Gregory Nutt
2014-06-30 07:52:57 -06:00
parent 926edfb33c
commit f1dcb6674a
1 changed files with 14 additions and 12 deletions
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drivers/mtd/mtd_config.c
+14 -12
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@@ -1,8 +1,10 @@
/**************************************************************************** /****************************************************************************
* drivers/mtd/mtd_config.c * drivers/mtd/mtd_config.c
* *
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Copyright (C) 2013 Ken Pettit. All rights reserved. * Copyright (C) 2013 Ken Pettit. All rights reserved.
* Author: Ken Pettit <pettitkd@gmail.com> * Author: Ken Pettit <pettitkd@gmail.com>
* With Updates from Gregory Nutt <gnutt@nuttx.org>
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions * modification, are permitted provided that the following conditions
@@ -89,22 +91,22 @@
struct mtdconfig_struct_s struct mtdconfig_struct_s
{ {
FAR struct mtd_dev_s *mtd; /* Contained MTD interface */ FAR struct mtd_dev_s *mtd; /* Contained MTD interface */
sem_t exclsem; /* Supports mutual exclusion */ sem_t exclsem; /* Supports mutual exclusion */
uint16_t blocksize; /* Size of blocks in contained MTD */ uint32_t blocksize :14; /* Size of blocks in contained MTD */
uint16_t erasesize; /* Size of erase block in contained MTD */ uint32_t erasesize :18; /* Size of erase block in contained MTD */
size_t nblocks; /* Number of blocks available */ size_t nblocks; /* Number of blocks available */
size_t neraseblocks; /* Number of erase blocks available */ size_t neraseblocks; /* Number of erase blocks available */
off_t readoff; /* Read offset (for hexdump) */ off_t readoff; /* Read offset (for hexdump) */
FAR uint8_t *buffer; /* Temp block read buffer */ FAR uint8_t *buffer; /* Temp block read buffer */
}; };
struct mtdconfig_header_s struct mtdconfig_header_s
{ {
uint8_t flags; /* Entry control flags */ uint8_t flags; /* Entry control flags */
uint8_t instance; /* Instance of the item */ uint8_t instance; /* Instance of the item */
uint16_t id; /* ID of the config data item */ uint16_t id; /* ID of the config data item */
uint16_t len; /* Length of the data block */ uint16_t len; /* Length of the data block */
} packed_struct; } packed_struct;
/**************************************************************************** /****************************************************************************