diff options
Diffstat (limited to 'bsps/powerpc/mpc55xxevb/start/sd-card-init.c')
| -rw-r--r-- | bsps/powerpc/mpc55xxevb/start/sd-card-init.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/bsps/powerpc/mpc55xxevb/start/sd-card-init.c b/bsps/powerpc/mpc55xxevb/start/sd-card-init.c new file mode 100644 index 0000000000..f6e0484122 --- /dev/null +++ b/bsps/powerpc/mpc55xxevb/start/sd-card-init.c @@ -0,0 +1,163 @@ +/** + * @file + * + * @ingroup mpc55xx + * + * @brief SD Card initialization code. + */ + +/* + * Copyright (c) 2008 + * Embedded Brains GmbH + * Obere Lagerstr. 30 + * D-82178 Puchheim + * Germany + * rtems@embedded-brains.de + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#include <stdio.h> + +#include <mpc55xx/mpc55xx.h> +#include <mpc55xx/regs.h> +#include <mpc55xx/dspi.h> + +#include <bsp.h> + +#include <rtems/status-checks.h> + +#ifdef MPC55XX_BOARD_MPC5566EVB + +static rtems_status_code mpc55xx_dspi_init(void) +{ + int rv = 0; + int i = 0; + char device_name [] = "/dev/spi0"; + union SIU_PCR_tag pcr = MPC55XX_ZERO_FLAGS; + + rv = rtems_libi2c_initialize(); + RTEMS_CHECK_RV_SC( rv, "rtems_libi2c_initialize"); + + /* DSPI D inputs are taken from DSPI C */ + SIU.DISR.R = 0x000000FC; + + /* DSPI A signals */ + pcr.B.PA = 1; + pcr.B.ODE = 0; + pcr.B.HYS = 0; + pcr.B.SRC = 3; + pcr.B.WPE = 1; + pcr.B.WPS = 1; + + /* SCK */ + pcr.B.OBE = 1; + pcr.B.IBE = 0; + SIU.PCR [93].R = pcr.R; + + /* SIN */ + pcr.B.OBE = 0; + pcr.B.IBE = 1; + SIU.PCR [94].R = pcr.R; + + /* SOUT */ + pcr.B.OBE = 1; + pcr.B.IBE = 0; + SIU.PCR [95].R = pcr.R; + + /* PCSx */ + pcr.B.OBE = 1; + pcr.B.IBE = 0; + SIU.PCR [96].R = pcr.R; + SIU.PCR [97].R = pcr.R; + SIU.PCR [98].R = pcr.R; + SIU.PCR [99].R = pcr.R; + SIU.PCR [100].R = pcr.R; + SIU.PCR [101].R = pcr.R; + + mpc55xx_dspi_bus_table [3].master = 0; + for (i = 0; i < MPC55XX_DSPI_NUMBER; ++i) { + device_name [8] = (char) ('0' + i); + rv = rtems_libi2c_register_bus( device_name, (rtems_libi2c_bus_t *) &mpc55xx_dspi_bus_table [i]); + RTEMS_CHECK_RV_SC( rv, device_name); + } + + return RTEMS_SUCCESSFUL; +} + +#include <stdio.h> +#include <rtems/fsmount.h> +#include <rtems/dosfs.h> +#include <rtems/bdpart.h> +#include <rtems/console.h> + +#include <libchip/spi-sd-card.h> + +#define MPC55XX_DEVICE "sd-card-a" +#define MPC55XX_DEVICE_FILE "/dev/" MPC55XX_DEVICE +#define MPC55XX_PARTITION "/dev/sd-card-a1" +#define MPC55XX_MOUNT_POINT "/mnt" + +static fstab_t mpc55xx_fs_table [] = { { + MPC55XX_PARTITION, MPC55XX_MOUNT_POINT, + "dosfs", RTEMS_FILESYSTEM_READ_WRITE, + FSMOUNT_MNT_OK | FSMOUNT_MNTPNT_CRTERR | FSMOUNT_MNT_FAILED, + FSMOUNT_MNT_OK + }, { + MPC55XX_DEVICE_FILE, MPC55XX_MOUNT_POINT, + "dosfs", RTEMS_FILESYSTEM_READ_WRITE, + FSMOUNT_MNT_OK | FSMOUNT_MNTPNT_CRTERR | FSMOUNT_MNT_FAILED, + 0 + } +}; + +sd_card_driver_entry sd_card_driver_table [] = { + { + .device_name = "/dev/sd-card-a", + .bus = 0, + .transfer_mode = SD_CARD_TRANSFER_MODE_DEFAULT, + .command = SD_CARD_COMMAND_DEFAULT, + /* response : whatever, */ + .response_index = SD_CARD_COMMAND_SIZE, + .n_ac_max = SD_CARD_N_AC_MAX_DEFAULT, + .block_number = 0, + .block_size = 0, + .block_size_shift = 0, + .busy = true, + .verbose = true, + .schedule_if_busy = false + } +}; + +size_t sd_card_driver_table_size = sizeof( sd_card_driver_table) / sizeof( sd_card_driver_table [0]); + +rtems_status_code mpc55xx_sd_card_init( bool mount) +{ + rtems_status_code sc = RTEMS_SUCCESSFUL; + int rv = 0; + sd_card_driver_entry *e = &sd_card_driver_table [0]; + + RTEMS_DEBUG_PRINT( "Task started\n"); + + sc = mpc55xx_dspi_init(); + RTEMS_CHECK_SC( rv, "Intitalize DSPI bus"); + + e->bus = mpc55xx_dspi_bus_table [0].bus_number; + + sc = sd_card_register(); + RTEMS_CHECK_SC( sc, "Register SD Card"); + + if (mount) { + sc = rtems_bdpart_register_from_disk( MPC55XX_DEVICE_FILE); + RTEMS_CHECK_SC( sc, "Initialize IDE partition table"); + + rv = rtems_fsmount( mpc55xx_fs_table, sizeof( mpc55xx_fs_table) / sizeof( mpc55xx_fs_table [0]), NULL); + RTEMS_CHECK_RV_SC( rv, "Mount file systems"); + } + + return RTEMS_SUCCESSFUL; +} + +#endif /* MPC55XX_BOARD_MPC5566EVB */ |