diff options
Diffstat (limited to 'bsps/arm/raspberrypi/start')
| -rw-r--r-- | bsps/arm/raspberrypi/start/mailbox.c | 63 | ||||
| -rw-r--r-- | bsps/arm/raspberrypi/start/timer.c | 48 | ||||
| -rw-r--r-- | bsps/arm/raspberrypi/start/vc.c | 487 | ||||
| -rw-r--r-- | bsps/arm/raspberrypi/start/vc_defines.h | 518 |
4 files changed, 1116 insertions, 0 deletions
diff --git a/bsps/arm/raspberrypi/start/mailbox.c b/bsps/arm/raspberrypi/start/mailbox.c new file mode 100644 index 0000000000..8196781ee5 --- /dev/null +++ b/bsps/arm/raspberrypi/start/mailbox.c @@ -0,0 +1,63 @@ +/** + * @file + * + * @ingroup raspberrypi + * + * @brief mailbox support. + */ +/* + * Copyright (c) 2015 Yang Qiao + * + * 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 <stdint.h> +#include <stdbool.h> +#include <bsp.h> +#include <bsp/raspberrypi.h> +#include <bsp/mailbox.h> + +#define BCM2835_MBOX_DATA_MASK( data ) ( data & 0xFFFFFFF0U ) +#define BCM2835_MBOX_CHANNEL_MASK( data ) ( data & 0xFU ) + +static inline bool bcm2835_mailbox_is_empty( void ) +{ + return ( BCM2835_REG( BCM2835_MBOX_STATUS ) & BCM2835_MBOX_EMPTY ); +} + +static inline bool bcm2835_mailbox_is_full( void ) +{ + return ( BCM2835_REG( BCM2835_MBOX_STATUS ) & BCM2835_MBOX_FULL ); +} + +unsigned int raspberrypi_mailbox_read( unsigned int channel ) +{ + unsigned int raw; + unsigned int read_channel; + + while ( 1 ) { + while ( bcm2835_mailbox_is_empty() ) ; + + raw = BCM2835_REG( BCM2835_MBOX_READ ); + read_channel = BCM2835_MBOX_CHANNEL_MASK( raw ); + + if ( read_channel == channel ) + return BCM2835_MBOX_DATA_MASK( raw ); + } +} + +void raspberrypi_mailbox_write( + unsigned int channel, + unsigned int data +) +{ + while ( bcm2835_mailbox_is_full() ) ; + + BCM2835_REG( BCM2835_MBOX_WRITE ) = + BCM2835_MBOX_DATA_MASK( data ) | + BCM2835_MBOX_CHANNEL_MASK( channel ); +} diff --git a/bsps/arm/raspberrypi/start/timer.c b/bsps/arm/raspberrypi/start/timer.c new file mode 100644 index 0000000000..f52ecb3a26 --- /dev/null +++ b/bsps/arm/raspberrypi/start/timer.c @@ -0,0 +1,48 @@ +/** + * @file + * + * @ingroup raspberrypi + * + * @brief Benchmark timer support. + */ + +/* + * Copyright (c) 2013 by Alan Cudmore + * + * 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 <bsp.h> +#include <rtems.h> +#include <rtems/btimer.h> +#include <bsp/raspberrypi.h> + +static bool benchmark_timer_find_average_overhead = false; + +static uint64_t benchmark_timer_base; + +void benchmark_timer_initialize( void ) +{ + benchmark_timer_base = BCM2835_REG( BCM2835_GPU_TIMER_CLO ); +} + +benchmark_timer_t benchmark_timer_read( void ) +{ + uint32_t delta = BCM2835_REG( BCM2835_GPU_TIMER_CLO ) - benchmark_timer_base; + + if ( benchmark_timer_find_average_overhead ) { + return delta; + } else { + return BCM2835_REG( BCM2835_GPU_TIMER_CLO ); + } +} + +void benchmark_timer_disable_subtracting_average_overhead( + bool find_average_overhead ) +{ + benchmark_timer_find_average_overhead = find_average_overhead; +} diff --git a/bsps/arm/raspberrypi/start/vc.c b/bsps/arm/raspberrypi/start/vc.c new file mode 100644 index 0000000000..249ea1e9a2 --- /dev/null +++ b/bsps/arm/raspberrypi/start/vc.c @@ -0,0 +1,487 @@ +/** + * @file + * + * @ingroup raspberrypi_vc + * + * @brief video core support. + * + */ + +/* + * Copyright (c) 2015 Yang Qiao + * + * 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 <pthread.h> + +#include <bsp.h> +#include <bsp/raspberrypi.h> +#include <bsp/mailbox.h> +#include <bsp/vc.h> +#include <libcpu/arm-cp15.h> +#include "vc_defines.h" + +#if ( RPI_L2_CACHE_ENABLE == 1 ) + #define BCM2835_VC_MEMORY_MAPPING 0x40000000 +#else + #define BCM2835_VC_MEMORY_MAPPING 0xC0000000 +#endif + +#define BCM2835_VC_MEMORY_MAPPING_MASK 0x3fffffff + +static inline bool bcm2835_mailbox_buffer_suceeded( + const bcm2835_mbox_buf_hdr *hdr ) +{ + RTEMS_COMPILER_MEMORY_BARRIER(); + return ( hdr->buf_code == BCM2835_MBOX_BUF_CODE_REQUEST_SUCCEED ); +} + +static inline int bcm2835_mailbox_send_read_buffer( void *buf ) +{ + RTEMS_COMPILER_MEMORY_BARRIER(); + raspberrypi_mailbox_write( BCM2835_MBOX_CHANNEL_PROP_AVC, + (unsigned int) buf + BCM2835_VC_MEMORY_MAPPING ); + raspberrypi_mailbox_read( BCM2835_MBOX_CHANNEL_PROP_AVC ); + RTEMS_COMPILER_MEMORY_BARRIER(); + return 0; +} + +/* + * When cache is enabled then content of buffer exchanged + * with VideoCore has to be propagated through ARM11/Cortex-A7 + * caches + */ +static inline void bcm2835_mailbox_buffer_flush_and_invalidate( + void *buf, + size_t size +) +{ + rtems_cache_flush_multiple_data_lines( buf, size ); + rtems_cache_invalidate_multiple_data_lines( buf, size ); +} + +#define BCM2835_MBOX_VAL_LENGTH_MASK( _val_len ) \ + ( _val_len & ( ~BCM2835_MBOX_TAG_VAL_LEN_RESPONSE ) ) + +int bcm2835_mailbox_get_display_size( + bcm2835_get_display_size_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_display_size get_display_size; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_display_size, + BCM2835_MAILBOX_TAG_GET_DISPLAY_SIZE ); + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->width = buffer.get_display_size.body.resp.width; + _entries->height = buffer.get_display_size.body.resp.height; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_display_size ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_init_frame_buffer( + bcm2835_init_frame_buffer_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_display_size set_display_size; + bcm2835_mbox_tag_virtual_size set_virtual_size; + bcm2835_mbox_tag_depth set_depth; + bcm2835_mbox_tag_pixel_order set_pixel_order; + bcm2835_mbox_tag_alpha_mode set_alpha_mode; + bcm2835_mbox_tag_virtual_offset set_virtual_offset; + bcm2835_mbox_tag_overscan set_overscan; + bcm2835_mbox_tag_allocate_buffer allocate_buffer; + bcm2835_mbox_tag_get_pitch get_pitch; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG( &buffer.set_display_size, + BCM2835_MAILBOX_TAG_SET_DISPLAY_SIZE ); + buffer.set_display_size.body.req.width = _entries->xres; + buffer.set_display_size.body.req.height = _entries->yres; + BCM2835_MBOX_INIT_TAG( &buffer.set_virtual_size, + BCM2835_MAILBOX_TAG_SET_VIRTUAL_SIZE ); + buffer.set_virtual_size.body.req.vwidth = _entries->xvirt; + buffer.set_virtual_size.body.req.vheight = _entries->yvirt; + BCM2835_MBOX_INIT_TAG( &buffer.set_depth, + BCM2835_MAILBOX_TAG_SET_DEPTH ); + buffer.set_depth.body.req.depth = _entries->depth; + BCM2835_MBOX_INIT_TAG( &buffer.set_pixel_order, + BCM2835_MAILBOX_TAG_SET_PIXEL_ORDER ); + buffer.set_pixel_order.body.req.pixel_order = _entries->pixel_order; + BCM2835_MBOX_INIT_TAG( &buffer.set_alpha_mode, + BCM2835_MAILBOX_TAG_SET_ALPHA_MODE ); + buffer.set_alpha_mode.body.req.alpha_mode = _entries->alpha_mode; + BCM2835_MBOX_INIT_TAG( &buffer.set_virtual_offset, + BCM2835_MAILBOX_TAG_SET_VIRTUAL_OFFSET ); + buffer.set_virtual_offset.body.req.voffset_x = _entries->voffset_x; + buffer.set_virtual_offset.body.req.voffset_x = _entries->voffset_y; + BCM2835_MBOX_INIT_TAG( &buffer.set_overscan, + BCM2835_MAILBOX_TAG_SET_OVERSCAN ); + buffer.set_overscan.body.req.overscan_top = _entries->overscan_top; + buffer.set_overscan.body.req.overscan_bottom = _entries->overscan_bottom; + buffer.set_overscan.body.req.overscan_left = _entries->overscan_left; + buffer.set_overscan.body.req.overscan_right = _entries->overscan_right; + BCM2835_MBOX_INIT_TAG( &buffer.allocate_buffer, + BCM2835_MAILBOX_TAG_ALLOCATE_BUFFER ); + buffer.allocate_buffer.body.req.align = 0x100; + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_pitch, + BCM2835_MAILBOX_TAG_GET_PITCH ); + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->xres = buffer.set_display_size.body.resp.width; + _entries->yres = buffer.set_display_size.body.resp.height; + _entries->xvirt = buffer.set_virtual_size.body.resp.vwidth; + _entries->yvirt = buffer.set_virtual_size.body.resp.vheight; + _entries->depth = buffer.set_depth.body.resp.depth; + _entries->base = buffer.allocate_buffer.body.resp.base; + _entries->base &= BCM2835_VC_MEMORY_MAPPING_MASK; + _entries->size = buffer.allocate_buffer.body.resp.size; + _entries->pixel_order = buffer.set_pixel_order.body.resp.pixel_order; + _entries->alpha_mode = buffer.set_alpha_mode.body.resp.alpha_mode; + _entries->voffset_x = buffer.set_virtual_offset.body.resp.voffset_x; + _entries->voffset_y = buffer.set_virtual_offset.body.resp.voffset_y; + _entries->overscan_left = buffer.set_overscan.body.resp.overscan_left; + _entries->overscan_right = buffer.set_overscan.body.resp.overscan_right; + _entries->overscan_top = buffer.set_overscan.body.resp.overscan_top; + _entries->overscan_bottom = buffer.set_overscan.body.resp.overscan_bottom; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.allocate_buffer ) ) + return -3; + + if ( _entries->base < 0x100000 ) + return -4; + + return 0; +} + +int bcm2835_mailbox_get_pitch( bcm2835_get_pitch_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_pitch get_pitch; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_pitch, + BCM2835_MAILBOX_TAG_GET_PITCH ); + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->pitch = buffer.get_pitch.body.resp.pitch; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_pitch ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_cmdline( bcm2835_get_cmdline_entries *_entries ) +{ + int i; + + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_cmd_line get_cmd_line; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_cmd_line, + BCM2835_MAILBOX_TAG_GET_CMD_LINE ); + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + for ( i = 0; + i < BCM2835_MBOX_VAL_LENGTH_MASK( buffer.get_cmd_line.tag_hdr.val_len ); + ++i ) { + _entries->cmdline[ i ] = buffer.get_cmd_line.body.resp.cmdline[ i ]; + } + + _entries->cmdline[ i ] = '\0'; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_cmd_line ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_power_state( bcm2835_set_power_state_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_power_state get_power_state; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG( &buffer.get_power_state, + BCM2835_MAILBOX_TAG_GET_POWER_STATE ); + buffer.get_power_state.body.req.dev_id = _entries->dev_id; + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->dev_id = buffer.get_power_state.body.resp.dev_id; + _entries->state = buffer.get_power_state.body.resp.state; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + return 0; +} + +int bcm2835_mailbox_set_power_state( bcm2835_set_power_state_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_power_state set_power_state; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG( &buffer.set_power_state, + BCM2835_MAILBOX_TAG_SET_POWER_STATE ); + buffer.set_power_state.body.req.dev_id = _entries->dev_id; + buffer.set_power_state.body.req.state = _entries->state; + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->dev_id = buffer.set_power_state.body.resp.dev_id; + _entries->state = buffer.set_power_state.body.resp.state; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + return 0; +} + +int bcm2835_mailbox_get_arm_memory( bcm2835_get_arm_memory_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_arm_memory get_arm_memory; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_arm_memory, + BCM2835_MAILBOX_TAG_GET_ARM_MEMORY ); + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->base = buffer.get_arm_memory.body.resp.base; + _entries->size = buffer.get_arm_memory.body.resp.size; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_arm_memory ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_vc_memory( bcm2835_get_vc_memory_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_vc_memory get_vc_memory; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_vc_memory, + BCM2835_MAILBOX_TAG_GET_VC_MEMORY ); + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->base = buffer.get_vc_memory.body.resp.base; + _entries->size = buffer.get_vc_memory.body.resp.size; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_vc_memory ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_firmware_revision( + bcm2835_mailbox_get_fw_rev_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_fw_rev get_fw_rev; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_fw_rev, + BCM2835_MAILBOX_TAG_FIRMWARE_REVISION ); + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->fw_rev = buffer.get_fw_rev.body.resp.rev; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_fw_rev ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_board_model( bcm2835_get_board_spec_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_board_spec get_board_model; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_board_model, + BCM2835_MAILBOX_TAG_GET_BOARD_MODEL ); + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->spec = buffer.get_board_model.body.resp.spec; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_board_model ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_board_revision( + bcm2835_get_board_spec_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_board_spec get_board_revision; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_board_revision, + BCM2835_MAILBOX_TAG_GET_BOARD_VERSION ); + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->spec = buffer.get_board_revision.body.resp.spec; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + if ( !BCM2835_MBOX_TAG_REPLY_IS_SET( &buffer.get_board_revision ) ) + return -3; + + return 0; +} + +int bcm2835_mailbox_get_board_serial( + bcm2835_get_board_serial_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_board_serial get_board_serial; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_board_serial, + BCM2835_MAILBOX_TAG_GET_BOARD_SERIAL ); + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->board_serial = buffer.get_board_serial.body.resp.board_serial; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + return 0; +} + +int bcm2835_mailbox_get_clock_rate( + bcm2835_get_clock_rate_entries *_entries ) +{ + struct BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE { + bcm2835_mbox_buf_hdr hdr; + bcm2835_mbox_tag_get_clock_rate get_clock_rate; + uint32_t end_tag; + uint32_t padding_reserve[16]; + } buffer; + BCM2835_MBOX_INIT_BUF( &buffer ); + BCM2835_MBOX_INIT_TAG_NO_REQ( &buffer.get_clock_rate, + BCM2835_MAILBOX_TAG_GET_CLOCK_RATE ); + buffer.get_clock_rate.body.req.clock_id = _entries->clock_id; + bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer ) ); + + if ( bcm2835_mailbox_send_read_buffer( &buffer ) ) + return -1; + + _entries->clock_id = buffer.get_clock_rate.body.resp.clock_id; + _entries->clock_rate = buffer.get_clock_rate.body.resp.clock_rate; + + if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) ) + return -2; + + return 0; +} diff --git a/bsps/arm/raspberrypi/start/vc_defines.h b/bsps/arm/raspberrypi/start/vc_defines.h new file mode 100644 index 0000000000..857305bf92 --- /dev/null +++ b/bsps/arm/raspberrypi/start/vc_defines.h @@ -0,0 +1,518 @@ +/** + * @file + * + * @ingroup raspberrypi_vc + * + * @brief video core support. + * + */ + +/* + * Copyright (c) 2015 Yang Qiao + * + * 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 LIBBSP_ARM_RASPBERRYPI_VC_DEFINES_H +#define LIBBSP_ARM_RASPBERRYPI_VC_DEFINES_H + +#include <string.h> + +/** + * @defgroup raspberrypi_vc Register Definitions + * + * @ingroup arm_raspberrypi + * + * @brief Register Definitions + * + * @{ + */ + +/** + * @name Mailbox Property tags (ARM <-> VC) + * + * @{ + */ + +#define BCM2835_MBOX_BUF_CODE_PROCESS_REQUEST 0x00000000 +#define BCM2835_MBOX_BUF_CODE_REQUEST_SUCCEED 0x80000000 +#define BCM2835_MBOX_BUF_CODE_REQUEST_PARSING_ERROR 0x80000001 +#define BCM2835_MBOX_TAG_VAL_LEN_REQUEST 0x00000000 +#define BCM2835_MBOX_TAG_VAL_LEN_RESPONSE 0x80000000 + +/** + * @brief Buffer Header + * + * All message buffers should start with this header, called 'hdr'. + * Then it should be followed by a list of tags. + * An additional empty tag should be added at the end, called 'end_tag' + * + */ +typedef struct { + /** + * @brief Buffer Size + * + * The size of whole structure including the header(size and code), + * tags, end tag and padding. + */ + uint32_t buf_size; + + /** + * @brief Buffer Code + * + * The code indicate the status of operation. + * Use function BCM2835_MAILBOX_BUFFER_IS_SUCCEED(bcm2835_mailbox_buffer*) + * to check if the operation is succeed + */ + uint32_t buf_code; +} bcm2835_mbox_buf_hdr; + +/** + * @brief Tag Header + * + * Tag is used for getting/testing/setting an property. + * All tags should start with this header. + * Then it should be followed by a data buffer for request and response. + * + */ +typedef struct { + /** + * @brief Property Tag ID + */ + uint32_t tag; + /** + * @brief The size of request qnd responce buffer + */ + uint32_t val_buf_size; + /** + * @brief The size of response buffer set by videocore. + * + * upper bit reserved for request/response indicator + */ + uint32_t val_len; +} bcm2835_mbox_tag_hdr; + +#define BCM2835_MBOX_TAG_REPLY_IS_SET( _t_ ) \ + ( ( _t_ )->tag_hdr.val_len & 0x80000000 ) + +#define BCM2835_MBOX_INIT_BUF( _m_ ) { \ + memset( ( _m_ ), 0, sizeof( *( _m_ ) ) ); \ + ( _m_ )->hdr.buf_size = (void *)&(( _m_ )->end_tag) + 4 - (void *)( _m_ ); \ + ( _m_ )->hdr.buf_code = BCM2835_MBOX_BUF_CODE_PROCESS_REQUEST; \ + ( _m_ )->end_tag = 0; \ +} + +#define BCM2835_MBOX_INIT_TAG( _t_, _id_ ) { \ + ( _t_ )->tag_hdr.tag = _id_; \ + ( _t_ )->tag_hdr.val_buf_size = sizeof( ( _t_ )->body ); \ + ( _t_ )->tag_hdr.val_len = sizeof( ( _t_ )->body.req ); \ +} + +#define BCM2835_MBOX_INIT_TAG_NO_REQ( _t_, _id_ ) { \ + ( _t_ )->tag_hdr.tag = _id_; \ + ( _t_ )->tag_hdr.val_buf_size = sizeof( ( _t_ )->body ); \ + ( _t_ )->tag_hdr.val_len = 0; \ +} + +/* + * Mailbox buffers has to be aligned to 16 bytes because + * 4 LSB bits of the BCM2835_MBOX_WRITE and BCM2835_MBOX_READ + * registers are used to pass channel number. + * + * But there is another requirement for buffer allocation + * as well when interface is called after cache is enabled. + * The buffer should not share cache line with another variable + * which can be updated during data exchange with VideoCore. + * If cache is filled to satisfy another variable update + * during VideoCore output is stored into main memory then + * part of received data can be lost. + * + * Cache line length is 64 bytes for RPi2 Cortex-A7 data cache + * so align buffers to this value. + */ +#define BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE __attribute__( ( aligned( 64 ) ) ) + +/* Video Core */ +#define BCM2835_MAILBOX_TAG_FIRMWARE_REVISION 0x00000001 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + } req; + struct { + uint32_t rev; + } resp; + } body; +} bcm2835_mbox_tag_get_fw_rev; + +/* Hardware */ +#define BCM2835_MAILBOX_TAG_GET_BOARD_MODEL 0x00010001 +#define BCM2835_MAILBOX_TAG_GET_BOARD_VERSION 0x00010002 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + } req; + struct { + uint32_t spec; + } resp; + } body; +} bcm2835_mbox_tag_get_board_spec; + +#if (BSP_IS_RPI2 == 1) +#define BCM2836_MAILBOX_BOARD_V_2_B 0x4 +#else +#define BCM2835_MAILBOX_BOARD_V_B_I2C0_2 0x2 +#define BCM2835_MAILBOX_BOARD_V_B_I2C0_3 0x3 +#define BCM2835_MAILBOX_BOARD_V_B_I2C1_4 0x4 +#define BCM2835_MAILBOX_BOARD_V_B_I2C1_5 0x5 +#define BCM2835_MAILBOX_BOARD_V_B_I2C1_6 0x6 +#define BCM2835_MAILBOX_BOARD_V_A_7 0x7 +#define BCM2835_MAILBOX_BOARD_V_A_8 0x8 +#define BCM2835_MAILBOX_BOARD_V_A_9 0x9 +#define BCM2835_MAILBOX_BOARD_V_B_REV2_d 0xd +#define BCM2835_MAILBOX_BOARD_V_B_REV2_e 0xe +#define BCM2835_MAILBOX_BOARD_V_B_REV2_f 0xf +#define BCM2835_MAILBOX_BOARD_V_B_PLUS 0x10 +#define BCM2835_MAILBOX_BOARD_V_CM 0x11 +#define BCM2835_MAILBOX_BOARD_V_A_PLUS 0x12 +#endif + +#define BCM2835_MAILBOX_TAG_GET_BOARD_MAC 0x00010003 +#define BCM2835_MAILBOX_TAG_GET_BOARD_SERIAL 0x00010004 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + } req; + struct { + uint64_t board_serial; + } resp; + } body; +} bcm2835_mbox_tag_get_board_serial; + +#define BCM2835_MAILBOX_TAG_GET_ARM_MEMORY 0x00010005 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + } req; + struct { + uint32_t base; + uint32_t size; + } resp; + } body; +} bcm2835_mbox_tag_get_arm_memory; + +#define BCM2835_MAILBOX_TAG_GET_VC_MEMORY 0x00010006 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + } req; + struct { + uint32_t base; + uint32_t size; + } resp; + } body; +} bcm2835_mbox_tag_get_vc_memory; + +#define BCM2835_MAILBOX_TAG_GET_CLOCKS 0x00010007 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + uint32_t clock_id; + } req; + struct { + uint32_t clock_id; + uint32_t clock_rate; + } resp; + } body; +} bcm2835_mbox_tag_get_clock_rate; + +/* Config */ +#define BCM2835_MAILBOX_TAG_GET_CMD_LINE 0x00050001 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + } req; + struct { + uint8_t cmdline[ 1024 ]; + } resp; + } body; +} bcm2835_mbox_tag_get_cmd_line; + +/* Shared resource management */ +#define BCM2835_MAILBOX_TAG_GET_DMA_CHANNELS 0x00060001 + +/* Power */ +#define BCM2835_MAILBOX_POWER_UDID_SD_Card 0x00000000 +#define BCM2835_MAILBOX_POWER_UDID_UART0 0x00000001 +#define BCM2835_MAILBOX_POWER_UDID_UART1 0x00000002 +#define BCM2835_MAILBOX_POWER_UDID_USB_HCD 0x00000003 +#define BCM2835_MAILBOX_POWER_UDID_I2C0 0x00000004 +#define BCM2835_MAILBOX_POWER_UDID_I2C1 0x00000005 +#define BCM2835_MAILBOX_POWER_UDID_I2C2 0x00000006 +#define BCM2835_MAILBOX_POWER_UDID_SPI 0x00000007 +#define BCM2835_MAILBOX_POWER_UDID_CCP2TX 0x00000008 + +#define BCM2835_MAILBOX_TAG_GET_POWER_STATE 0x00020001 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + uint32_t dev_id; + } req; + struct { + uint32_t dev_id; + uint32_t state; + } resp; + } body; +} bcm2835_mbox_tag_get_power_state; + +#define BCM2835_MAILBOX_POWER_STATE_RESP_ON (1 << 0) +#define BCM2835_MAILBOX_POWER_STATE_RESP_NODEV (1 << 1) + +#define BCM2835_MAILBOX_TAG_GET_TIMING 0x00020002 +#define BCM2835_MAILBOX_TAG_SET_POWER_STATE 0x00028001 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + uint32_t dev_id; + uint32_t state; + } req; + struct { + uint32_t dev_id; + uint32_t state; + } resp; + } body; +} bcm2835_mbox_tag_power_state; + +#ifndef BCM2835_MAILBOX_SET_POWER_STATE_REQ_ON +/* Value is defined as a part of public VideoCore API */ +#define BCM2835_MAILBOX_SET_POWER_STATE_REQ_ON (1 << 0) +#define BCM2835_MAILBOX_SET_POWER_STATE_REQ_WAIT (1 << 1) +#endif + +/* Clocks */ +#define BCM2835_MAILBOX_UCID_CLOCK_RESERVED 0x000000000 +#define BCM2835_MAILBOX_UCID_CLOCK_EMMC 0x000000001 +#define BCM2835_MAILBOX_UCID_CLOCK_UART 0x000000002 +#define BCM2835_MAILBOX_UCID_CLOCK_ARM 0x000000003 +#define BCM2835_MAILBOX_UCID_CLOCK_CORE 0x000000004 +#define BCM2835_MAILBOX_UCID_CLOCK_V3D 0x000000005 +#define BCM2835_MAILBOX_UCID_CLOCK_H264 0x000000006 +#define BCM2835_MAILBOX_UCID_CLOCK_ISP 0x000000007 +#define BCM2835_MAILBOX_UCID_CLOCK_SDRAM 0x000000008 +#define BCM2835_MAILBOX_UCID_CLOCK_PIXEL 0x000000009 +#define BCM2835_MAILBOX_UCID_CLOCK_PWM 0x00000000a + +#define BCM2835_MAILBOX_TAG_GET_CLOCK_STATE 0x00030001 +#define BCM2835_MAILBOX_TAG_SET_CLOCK_STATE 0x00038001 +#define BCM2835_MAILBOX_TAG_GET_CLOCK_RATE 0x00030002 +#define BCM2835_MAILBOX_TAG_SET_CLOCK_RATE 0x00038002 +#define BCM2835_MAILBOX_TAG_GET_MAX_CLOCK_RATE 0x00030004 +#define BCM2835_MAILBOX_TAG_GET_MIN_CLOCK_RATE 0x00030007 +#define BCM2835_MAILBOX_TAG_GET_TRUBO 0x00030009 +#define BCM2835_MAILBOX_TAG_SET_TURBO 0x00038009 + +#define BCM2835_MAILBOX_TAG_GET_DOMAIN_STATE 0x00030030 +#define BCM2835_MAILBOX_TAG_SET_DOMAIN_STATE 0x00038030 + +/* Voltage */ +#define BCM2835_MAILBOX_VOLTAGE_RESERVED_UVID 0x000000000 +#define BCM2835_MAILBOX_VOLTAGE_CORE_UVID 0x000000001 +#define BCM2835_MAILBOX_VOLTAGE_SDRAM_C_UVID 0x000000002 +#define BCM2835_MAILBOX_VOLTAGE_SDRAM_P_UVID 0x000000003 +#define BCM2835_MAILBOX_VOLTAGE_SDRAM_I_UVID 0x000000004 + +#define BCM2835_MAILBOX_TAG_GET_VOLTAGE 0x00030003 +#define BCM2835_MAILBOX_TAG_SET_VOLTAGE 0x00038003 +#define BCM2835_MAILBOX_TAG_GET_MAX_VOLTAGE 0x00030005 +#define BCM2835_MAILBOX_TAG_GET_MIN_VOLTAGE 0x00030008 +#define BCM2835_MAILBOX_TAG_GET_TEMPERATURE 0x00030006 +#define BCM2835_MAILBOX_TAG_GET_MAX_TEMPERATURE 0x0003000a + +/* Memory */ +#define BCM2835_MAILBOX_TAG_ALLOCATE_MEMORY 0x0003000c +#define BCM2835_MAILBOX_TAG_LOCK_MEMORY 0x0003000d +#define BCM2835_MAILBOX_TAG_UNLOCK_MEMORY 0x0003000e +#define BCM2835_MAILBOX_TAG_RELEASE_MEMORY 0x0003000f +#define BCM2835_MAILBOX_TAG_EXECUTE_CODE 0x00030010 +#define BCM2835_MAILBOX_TAG_GET_DISPMANX_RESOURCE_MEM_HANDLE 0x00030014 + +#define BCM2835_MAILBOX_TAG_GET_EDID_BLOCK 0x00030020 + +/* Framebuffer */ +#define BCM2835_MAILBOX_TAG_ALLOCATE_BUFFER 0x00040001 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + uint32_t align; + } req; + struct { + uint32_t base; + uint32_t size; + } resp; + } body; +} bcm2835_mbox_tag_allocate_buffer; + +#define BCM2835_MAILBOX_TAG_RELEASE_BUFFER 0x00048001 + +#define BCM2835_MAILBOX_TAG_BLANK_SCREEN 0x00040002 + +#define BCM2835_MAILBOX_TAG_GET_DISPLAY_SIZE 0x00040003 +#define BCM2835_MAILBOX_TAG_TEST_DISPLAY_SIZE 0x00044003 +#define BCM2835_MAILBOX_TAG_SET_DISPLAY_SIZE 0x00048003 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + uint32_t width; + uint32_t height; + } req; + struct { + uint32_t width; + uint32_t height; + } resp; + } body; +} bcm2835_mbox_tag_display_size; + +#define BCM2835_MAILBOX_TAG_GET_VIRTUAL_SIZE 0x00040004 +#define BCM2835_MAILBOX_TAG_TEST_VIRTUAL_SIZE 0x00044004 +#define BCM2835_MAILBOX_TAG_SET_VIRTUAL_SIZE 0x00048004 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + uint32_t vwidth; + uint32_t vheight; + } req; + struct { + uint32_t vwidth; + uint32_t vheight; + } resp; + } body; +} bcm2835_mbox_tag_virtual_size; + +#define BCM2835_MAILBOX_TAG_GET_DEPTH 0x00040005 +#define BCM2835_MAILBOX_TAG_TEST_DEPTH 0x00044005 +#define BCM2835_MAILBOX_TAG_SET_DEPTH 0x00048005 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + uint32_t depth; + } req; + struct { + uint32_t depth; + } resp; + } body; +} bcm2835_mbox_tag_depth; + +#define BCM2835_MAILBOX_TAG_GET_PIXEL_ORDER 0x00040006 +#define BCM2835_MAILBOX_TAG_TEST_PIXEL_ORDER 0x00044006 +#define BCM2835_MAILBOX_TAG_SET_PIXEL_ORDER 0x00048006 + +#define BCM2835_MAILBOX_PIXEL_ORDER_BGR 0 +#define BCM2835_MAILBOX_PIXEL_ORDER_RGB 1 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + uint32_t pixel_order; + } req; + struct { + uint32_t pixel_order; + } resp; + } body; +} bcm2835_mbox_tag_pixel_order; + +#define BCM2835_MAILBOX_TAG_GET_ALPHA_MODE 0x00040007 +#define BCM2835_MAILBOX_TAG_TEST_ALPHA_MODE 0x00044007 +#define BCM2835_MAILBOX_TAG_SET_ALPHA_MODE 0x00048007 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + uint32_t alpha_mode; + } req; + struct { + uint32_t alpha_mode; + } resp; + } body; +} bcm2835_mbox_tag_alpha_mode; + +#define BCM2835_MAILBOX_ALPHA_MODE_0_OPAQUE 0 +#define BCM2835_MAILBOX_ALPHA_MODE_0_TRANSPARENT 1 +#define BCM2835_MAILBOX_ALPHA_MODE_IGNORED 2 + +#define BCM2835_MAILBOX_TAG_GET_PITCH 0x00040008 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + } req; + struct { + uint32_t pitch; + } resp; + } body; +} bcm2835_mbox_tag_get_pitch; + +#define BCM2835_MAILBOX_TAG_GET_VIRTUAL_OFFSET 0x00040009 +#define BCM2835_MAILBOX_TAG_TEST_VIRTUAL_OFFSET 0x00044009 +#define BCM2835_MAILBOX_TAG_SET_VIRTUAL_OFFSET 0x00048009 +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + uint32_t voffset_x; + uint32_t voffset_y; + } req; + struct { + uint32_t voffset_x; + uint32_t voffset_y; + } resp; + } body; +} bcm2835_mbox_tag_virtual_offset; + +#define BCM2835_MAILBOX_TAG_GET_OVERSCAN 0x0004000a +#define BCM2835_MAILBOX_TAG_TEST_OVERSCAN 0x0004400a +#define BCM2835_MAILBOX_TAG_SET_OVERSCAN 0x0004800a +typedef struct { + bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + uint32_t overscan_top; + uint32_t overscan_bottom; + uint32_t overscan_left; + uint32_t overscan_right; + } req; + struct { + uint32_t overscan_top; + uint32_t overscan_bottom; + uint32_t overscan_left; + uint32_t overscan_right; + } resp; + } body; +} bcm2835_mbox_tag_overscan; + +#define BCM2835_MAILBOX_TAG_GET_PALETTE 0x0004000b +#define BCM2835_MAILBOX_TAG_TEST_PALETTE 0x0004400b +#define BCM2835_MAILBOX_TAG_SET_PALETTE 0x0004800b +#define BCM2835_MAILBOX_TAG_SET_CURSOR_INFO 0x00008011 +#define BCM2835_MAILBOX_TAG_SET_CURSOR_STATE 0x00008010 + +/** @} */ + +/** @} */ + +#endif /* LIBBSP_ARM_RASPBERRYPI_VC_DEFINES_H */ |