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Add logic to initialize the LPC43xx SPIFI device

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4949 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2012-07-17 20:02:57 +00:00
parent 0df51c1b85
commit 6dffb92c26
5 changed files with 91 additions and 47 deletions
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configs/lpc4330-xplorer/README.txt
+2 -1
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@@ -901,7 +901,8 @@ Where <subdir> is one of the following:
CONFIG_LPC32_CODEREDW=y : Code Red under Windows
This configuration has some special options that can be used to
create a block device on the SPIFI FLASH:
create a block device on the SPIFI FLASH. NOTE: CONFIG_LPC43_SPIFI=y
must also be defined to enable SPIFI setup support:
CONFIG_SPIFI_BLKDRVR - Enable to create a block driver on the SPFI
device.
configs/lpc4330-xplorer/include/board.h
+30
View File
@@ -151,6 +151,36 @@
#define LPC43_CCLK BOARD_FCLKOUT_FREQUENCY
/* SPIFI clocking **********************************************************/
/* The SPIFI will receive clocking from a divider per the settings provided
* in this file. The NuttX code will configure PLL1 as the input clock
* for the selected divider
*/
#if BOARD_FCLKOUT_FREQUENCY < 120000000
# define BOARD_SPIFI_PLL1 1 /* Use PLL1 directly */
# undef BOARD_SPIFI_DIVA
#else
# undef BOARD_SPIFI_PLL1
# define BOARD_SPIFI_DIVA 1 /* Use IDIVA */
#endif
#undef BOARD_SPIFI_DIVB
#undef BOARD_SPIFI_DIVC
#undef BOARD_SPIFI_DIVD
#undef BOARD_SPIFI_DIVE
/* We need to configure the divider so that its output is as close to 120MHz
* without exceeding that value.
*/
#if BOARD_FCLKOUT_FREQUENCY < 120000000
# define BOARD_SPIFI_FREQUENCY BOARD_FCLKOUT_FREQUENCY /* 72Mhz? */
#else
# define BOARD_SPIFI_DIVIDER (2) /* 204MHz / 2 = 102MHz */
# define BOARD_SPIFI_FREQUENCY (102000000) /* 204MHz / 2 = 102MHz */
#endif
/* UART clocking ***********************************************************/
/* Configure all U[S]ARTs to use the XTAL input frequency */
configs/lpc4330-xplorer/nsh/defconfig
+2 -1
View File
@@ -659,7 +659,8 @@ CONFIG_MMCSD_HAVECARDDETECT=n
#
# This configuration has some special options that can be used to
# create a block device on the SPIFI FLASH:
# create a block device on the SPIFI FLASH. NOTE: CONFIG_LPC43_SPIFI=y
# must also be defined to enable SPIFI setup support:
#
# CONFIG_SPIFI_BLKDRVR - Enable to create a block driver on the SPFI
# device.
configs/lpc4330-xplorer/src/up_nsh.c
+37 -25
View File
@@ -44,39 +44,31 @@
#include <debug.h>
#include <errno.h>
/* This should be removed someday when we are confident in SPIFI */
#include <nuttx/ramdisk.h>
#ifdef CONFIG_DEBUG_FS
#include "chip.h"
#ifdef CONFIG_SPIFI_BLKDRVR
# include "lpc43_spifi.h"
/* This should be removed someday when we are confident in SPIFI */
# ifdef CONFIG_DEBUG_FS
# include "up_arch.h"
# include "chip/lpc43_cgu.h"
# include "chip/lpc43_ccu.h"
# endif
#endif
#include "chip.h"
#include <nuttx/ramdisk.h>
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* USB Configuration ********************************************************/
/* PORT and SLOT number probably depend on the board configuration */
#ifdef CONFIG_ARCH_BOARD_LPC4330_XPLORER
# define CONFIG_NSH_HAVEUSBDEV 1
#else
# error "Unrecognized board"
# undef CONFIG_NSH_HAVEUSBDEV
#endif
/* Can't support USB features if USB is not enabled */
#ifndef CONFIG_USBDEV
# undef CONFIG_NSH_HAVEUSBDEV
#endif
/* SPIFI Configuration ******************************************************/
/* CONFIG_SPIFI_BLKDRVR - Enable to create a block driver on the SPFI device.
/* This logic supports some special options that can be used to create a
* block device on the SPIFI FLASH. NOTE: CONFIG_LPC43_SPIFI=y must also
* be defined to enable SPIFI setup support:
*
* CONFIG_SPIFI_BLKDRVR - Enable to create a block driver on the SPFI device.
* CONFIG_SPIFI_DEVNO - SPIFI minor device number. The SPFI device will be
* at /dev/ramN, where N is the value of CONFIG_SPIFI_DEVNO. Default: 0.
* CONFIG_SPIFI_RDONLY - Create a read only device on SPIFI.
@@ -95,23 +87,32 @@
*/
#ifdef CONFIG_SPIFI_BLKDRVR
# ifndef CONFIG_LPC43_SPIFI=n
# error "SPIFI support is not enabled (CONFIG_LPC43_SPIFI)"
# endif
# ifndef CONFIG_SPIFI_DEVNO
# define CONFIG_SPIFI_DEVNO 0
# endif
# ifndef CONFIG_SPIFI_OFFSET
# define CONFIG_SPIFI_OFFSET 0
# endif
# ifndef CONFIG_SPIFI_BLKSIZE
# define CONFIG_SPIFI_BLKSIZE 512
# endif
# ifndef CONFIG_SPIFI_NBLOCKS
# error "Need number of SPIFI blocks (CONFIG_SPIFI_NBLOCKS)"
# endif
#endif
#define SPIFI_BUFFER \
# define SPIFI_BUFFER \
(FAR uint8_t *)(LPC43_LOCSRAM_SPIFI_BASE + CONFIG_SPIFI_OFFSET)
#endif
/* Debug ********************************************************************/
#ifdef CONFIG_CPP_HAVE_VARARGS
@@ -151,6 +152,17 @@
#ifdef CONFIG_SPIFI_BLKDRVR
static int nsh_spifi_initialize(void)
{
int ret;
/* Initialize the SPIFI interface */
ret = lpc43_spifi_initialize();
if (ret < 0)
{
fdbg("ERROR: lpc43_spifi_initialize failed: %d\n", ret);
return ret;
}
/* This should be removed someday when we are confident in SPIFI */
#ifdef CONFIG_DEBUG_FS