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author | Chris Johns <chrisj@rtems.org> | 2017-12-23 18:18:56 +1100 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-01-25 08:45:26 +0100 |
commit | 2afb22b7e1ebcbe40373ff7e0efae7d207c655a9 (patch) | |
tree | 44759efe9374f13200a97e96d91bd9a2b7e5ce2a /bsps/include/libchip/spi-sd-card.h | |
parent | MAINTAINERS: Add myself to Write After Approval. (diff) | |
download | rtems-2afb22b7e1ebcbe40373ff7e0efae7d207c655a9.tar.bz2 |
Remove make preinstall
A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.
This has at least seven problems:
* The make preinstall step itself needs time and disk space.
* Errors in header files show up in the build tree copy. This makes it
hard for editors to open the right file to fix the error.
* There is no clear relationship between source and build tree header
files. This makes an audit of the build process difficult.
* The visibility of all header files in the build tree makes it
difficult to enforce API barriers. For example it is discouraged to
use BSP-specifics in the cpukit.
* An introduction of a new build system is difficult.
* Include paths specified by the -B option are system headers. This
may suppress warnings.
* The parallel build had sporadic failures on some hosts.
This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.
The new cpukit include directories are:
* cpukit/include
* cpukit/score/cpu/@RTEMS_CPU@/include
* cpukit/libnetworking
The new BSP include directories are:
* bsps/include
* bsps/@RTEMS_CPU@/include
* bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include
There are build tree include directories for generated files.
The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.
The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.
Update #3254.
Diffstat (limited to 'bsps/include/libchip/spi-sd-card.h')
-rw-r--r-- | bsps/include/libchip/spi-sd-card.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/bsps/include/libchip/spi-sd-card.h b/bsps/include/libchip/spi-sd-card.h new file mode 100644 index 0000000000..77e905a155 --- /dev/null +++ b/bsps/include/libchip/spi-sd-card.h @@ -0,0 +1,86 @@ +/** + * @file + * + * @brief SD Card LibI2C driver. + */ + +/* + * 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. + */ + +#ifndef LIBI2C_SD_CARD_H +#define LIBI2C_SD_CARD_H + +#include <stdint.h> +#include <stdbool.h> + +#include <rtems/libi2c.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#define SD_CARD_IDLE_TOKEN 0xff + +/** + * 1 idle token before command + * 6 bytes for the command + * 1 to 8 bytes for response start (N_CR) + * 1 to 2 bytes for response + * 1 idle token after command (minimum N_RC) + */ +#define SD_CARD_COMMAND_SIZE 18 + +#define SD_CARD_TRANSFER_MODE_DEFAULT { .baudrate = 400000, .bits_per_char = 8, .lsb_first = FALSE, .clock_inv = FALSE, .clock_phs = FALSE, .idle_char = SD_CARD_IDLE_TOKEN } + +#define SD_CARD_COMMAND_DEFAULT { \ + SD_CARD_IDLE_TOKEN, \ + 0x40, 0, 0, 0, 0, 0x95, \ + SD_CARD_IDLE_TOKEN, SD_CARD_IDLE_TOKEN, \ + SD_CARD_IDLE_TOKEN, SD_CARD_IDLE_TOKEN, \ + SD_CARD_IDLE_TOKEN, SD_CARD_IDLE_TOKEN, \ + SD_CARD_IDLE_TOKEN, SD_CARD_IDLE_TOKEN, \ + SD_CARD_IDLE_TOKEN, SD_CARD_IDLE_TOKEN, \ + SD_CARD_IDLE_TOKEN \ +} + +/* Default speed = 400kbps, default timeout = 100ms, n_ac_max is in bytes */ +#define SD_CARD_N_AC_MAX_DEFAULT 5000 + +typedef struct { + const char *device_name; + rtems_device_minor_number bus; + rtems_libi2c_tfr_mode_t transfer_mode; + uint8_t command [SD_CARD_COMMAND_SIZE]; + uint8_t response [SD_CARD_COMMAND_SIZE]; + int response_index; + uint32_t n_ac_max; + uint32_t block_number; + uint32_t block_size; + uint32_t block_size_shift; + bool busy; + bool verbose; + bool schedule_if_busy; + uint32_t retries; +} sd_card_driver_entry; + +extern sd_card_driver_entry sd_card_driver_table []; + +extern size_t sd_card_driver_table_size; + +rtems_status_code sd_card_register( void); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBI2C_SD_CARD_H */ |