diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/raspberrypi/startup')
-rw-r--r-- | c/src/lib/libbsp/arm/raspberrypi/startup/bspreset.c | 35 | ||||
-rw-r--r-- | c/src/lib/libbsp/arm/raspberrypi/startup/bspstart.c | 29 | ||||
-rw-r--r-- | c/src/lib/libbsp/arm/raspberrypi/startup/bspstarthooks.c | 114 | ||||
-rw-r--r-- | c/src/lib/libbsp/arm/raspberrypi/startup/linkcmds | 62 |
4 files changed, 240 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/raspberrypi/startup/bspreset.c b/c/src/lib/libbsp/arm/raspberrypi/startup/bspreset.c new file mode 100644 index 0000000000..588a33ec09 --- /dev/null +++ b/c/src/lib/libbsp/arm/raspberrypi/startup/bspreset.c @@ -0,0 +1,35 @@ +/** + * @file + * + * @ingroup raspberrypi + * + * @brief Reset code. + */ + +/* + * Copyright (c) 2013 by Alan Cudmore + * Based on work by: + * Copyright (c) 2009 + * 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.com/license/LICENSE + * + */ + +#include <rtems.h> + +#include <bsp/bootcard.h> + +void bsp_reset( void) +{ + while (true) { + /* Do nothing */ + } +} diff --git a/c/src/lib/libbsp/arm/raspberrypi/startup/bspstart.c b/c/src/lib/libbsp/arm/raspberrypi/startup/bspstart.c new file mode 100644 index 0000000000..e48dd532a4 --- /dev/null +++ b/c/src/lib/libbsp/arm/raspberrypi/startup/bspstart.c @@ -0,0 +1,29 @@ +/** + * @file + * + * @ingroup raspberrypi + * + * @brief Startup code. + */ + +/* + * 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.com/license/LICENSE + */ + +#include <bsp.h> +#include <bsp/bootcard.h> +#include <bsp/irq-generic.h> +#include <bsp/irq.h> +#include <bsp/linker-symbols.h> +#include <bsp/stackalloc.h> +#include <bsp/raspberrypi.h> + +void bsp_start(void) +{ + bsp_interrupt_initialize(); +} diff --git a/c/src/lib/libbsp/arm/raspberrypi/startup/bspstarthooks.c b/c/src/lib/libbsp/arm/raspberrypi/startup/bspstarthooks.c new file mode 100644 index 0000000000..6f57264119 --- /dev/null +++ b/c/src/lib/libbsp/arm/raspberrypi/startup/bspstarthooks.c @@ -0,0 +1,114 @@ +/** + * @file + * + * @ingroup raspberrypi + * + * @brief Startup code. + */ + +/* + * Copyright (c) 2013 by Alan Cudmore + * based on work by: + * Copyright (c) 2009 + * 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.com/license/LICENSE + */ + +#include <stdbool.h> + +#include <bspopts.h> +#include <bsp/start.h> +#include <bsp/raspberrypi.h> +#include <bsp/mmu.h> +#include <bsp/linker-symbols.h> +#include <bsp/uart-output-char.h> + +static void BSP_START_TEXT_SECTION clear_bss(void) +{ + const int *end = (const int *) bsp_section_bss_end; + int *out = (int *) bsp_section_bss_begin; + + /* Clear BSS */ + while (out != end) { + *out = 0; + ++out; + } +} + +static void BSP_START_TEXT_SECTION raspberrypi_cache_setup(void) +{ + uint32_t ctrl = 0; + + /* Disable MMU and cache, basic settings */ + ctrl = arm_cp15_get_control(); + ctrl &= ~(ARM_CP15_CTRL_I | ARM_CP15_CTRL_R | ARM_CP15_CTRL_C + | ARM_CP15_CTRL_V | ARM_CP15_CTRL_M); + ctrl |= ARM_CP15_CTRL_S | ARM_CP15_CTRL_A; + arm_cp15_set_control(ctrl); + + arm_cp15_cache_invalidate(); + arm_cp15_tlb_invalidate(); + +} + + +void BSP_START_TEXT_SECTION bsp_start_hook_0(void) +{ + raspberrypi_cache_setup(); +} + + +void BSP_START_TEXT_SECTION bsp_start_hook_1(void) +{ + + /* Copy .text section */ + arm_cp15_instruction_cache_invalidate(); + bsp_start_memcpy( + (int *) bsp_section_text_begin, + (const int *) bsp_section_text_load_begin, + (size_t) bsp_section_text_size + ); + + /* Copy .rodata section */ + arm_cp15_instruction_cache_invalidate(); + bsp_start_memcpy( + (int *) bsp_section_rodata_begin, + (const int *) bsp_section_rodata_load_begin, + (size_t) bsp_section_rodata_size + ); + + /* Copy .data section */ + arm_cp15_instruction_cache_invalidate(); + bsp_start_memcpy( + (int *) bsp_section_data_begin, + (const int *) bsp_section_data_load_begin, + (size_t) bsp_section_data_size + ); + + /* Copy .fast_text section */ + arm_cp15_instruction_cache_invalidate(); + bsp_start_memcpy( + (int *) bsp_section_fast_text_begin, + (const int *) bsp_section_fast_text_load_begin, + (size_t) bsp_section_fast_text_size + ); + + /* Copy .fast_data section */ + arm_cp15_instruction_cache_invalidate(); + bsp_start_memcpy( + (int *) bsp_section_fast_data_begin, + (const int *) bsp_section_fast_data_load_begin, + (size_t) bsp_section_fast_data_size + ); + + /* Clear .bss section */ + clear_bss(); + +} diff --git a/c/src/lib/libbsp/arm/raspberrypi/startup/linkcmds b/c/src/lib/libbsp/arm/raspberrypi/startup/linkcmds new file mode 100644 index 0000000000..b9a0dd88dc --- /dev/null +++ b/c/src/lib/libbsp/arm/raspberrypi/startup/linkcmds @@ -0,0 +1,62 @@ +/** + * @file + * + * @ingroup raspberry_pi + * + * @brief Memory map. + */ + +/** + * @defgroup raspberry_pi Memory Map + * + * @ingroup bsp_linker + * + * @brief Raspberry Pi memory map. + * + * <table> + * <tr><th>Region Name</th><th>Region Begin</th><th>Region Size</th></tr> + * <tr><td>VECTOR_RAM</td><td>0x08000000</td><td>8k</td></tr> + * <tr><td>RAM</td><td>0x80008000</td><td>128M</td></tr> + * </table> + * + * <table> + * <tr><th>Section Name</th><th>Section Runtime Region</th><th>Section Load Region</th></tr> + * <tr><td>.start</td><td>RAM</td><td></td></tr> + * <tr><td>.vector</td><td>VECTOR_RAM</td><td></td></tr> + * <tr><td>.text</td><td>RAM</td><td>RAM_EXT</td></tr> + * <tr><td>.rodata</td><td>RAM</td><td>RAM_EXT</td></tr> + * <tr><td>.data</td><td>RAM</td><td>RAM_EXT</td></tr> + * <tr><td>.fast</td><td>RAM</td><td>RAM_EXT</td></tr> + * <tr><td>.bss</td><td>RAM</td><td></td></tr> + * <tr><td>.work</td><td>RAM</td><td></td></tr> + * <tr><td>.stack</td><td>RAM</td><td></td></tr> + * </table> + */ + +MEMORY { + VECTOR_RAM (AIW) : ORIGIN = 0x0 , LENGTH = 0x8000 + RAM (AIW) : ORIGIN = 0x00008000, LENGTH = 128M - 0x8000 +} + +REGION_ALIAS ("REGION_START", RAM); +REGION_ALIAS ("REGION_VECTOR", VECTOR_RAM); +REGION_ALIAS ("REGION_TEXT", RAM); +REGION_ALIAS ("REGION_TEXT_LOAD", RAM); +REGION_ALIAS ("REGION_RODATA", RAM); +REGION_ALIAS ("REGION_RODATA_LOAD", RAM); +REGION_ALIAS ("REGION_DATA", RAM); +REGION_ALIAS ("REGION_DATA_LOAD", RAM); +REGION_ALIAS ("REGION_FAST_TEXT", RAM); +REGION_ALIAS ("REGION_FAST_TEXT_LOAD", RAM); +REGION_ALIAS ("REGION_FAST_DATA", RAM); +REGION_ALIAS ("REGION_FAST_DATA_LOAD", RAM); +REGION_ALIAS ("REGION_BSS", RAM); +REGION_ALIAS ("REGION_WORK", RAM); +REGION_ALIAS ("REGION_STACK", RAM); + +bsp_stack_irq_size = DEFINED (bsp_stack_irq_size) ? bsp_stack_irq_size : 4096; +bsp_stack_abt_size = DEFINED (bsp_stack_abt_size) ? bsp_stack_abt_size : 1024; + +bsp_section_robarrier_align = DEFINED (bsp_section_robarrier_align) ? bsp_section_robarrier_align : 1M; + +INCLUDE linkcmds.armv4 |