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Diffstat (limited to 'c/src/lib/libbsp/m68k/genmcf548x/startup/bspstart.c')
| -rw-r--r-- | c/src/lib/libbsp/m68k/genmcf548x/startup/bspstart.c | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/c/src/lib/libbsp/m68k/genmcf548x/startup/bspstart.c b/c/src/lib/libbsp/m68k/genmcf548x/startup/bspstart.c deleted file mode 100644 index 6c1da2a738..0000000000 --- a/c/src/lib/libbsp/m68k/genmcf548x/startup/bspstart.c +++ /dev/null @@ -1,206 +0,0 @@ -/*===============================================================*\ -| Project: RTEMS generic mcf548x BSP | -+-----------------------------------------------------------------+ -| File: bspstart.c | -+-----------------------------------------------------------------+ -| The file contains the startup code of generic MCF548x BSP | -+-----------------------------------------------------------------+ -| Copyright (c) 2007 | -| Embedded Brains GmbH | -| Obere Lagerstr. 30 | -| D-82178 Puchheim | -| Germany | -| rtems@embedded-brains.de | -+-----------------------------------------------------------------+ -| | -| Parts of the code has been derived from the "dBUG source code" | -| package Freescale is providing for M548X EVBs. The usage of | -| the modified or unmodified code and it's integration into the | -| generic mcf548x BSP has been done according to the Freescale | -| license terms. | -| | -| The Freescale license terms can be reviewed in the file | -| | -| Freescale_license.txt | -| | -+-----------------------------------------------------------------+ -| | -| The generic mcf548x BSP has been developed on the basic | -| structures and modules of the av5282 BSP. | -| | -+-----------------------------------------------------------------+ -| | -| 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. | -| | -+-----------------------------------------------------------------+ -| | -| date history ID | -| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | -| 12.11.07 1.0 ras | -| | -\*===============================================================*/ - -#include <bsp.h> -#include <bsp/bootcard.h> - -extern uint32_t _CPU_cacr_shadow; - -/* -* These labels (!) are defined in the linker command file or when the linker is -* invoked. -* NOTE: The information (size) is the address of the object, not the object -* itself. -*/ - -extern char _SdramBase[]; -extern char _BootFlashBase[]; -extern char _CodeFlashBase[]; -extern char _SdramSize[]; -extern char _BootFlashSize[]; -extern char _CodeFlashSize[]; -extern char _TopRamReserved []; -extern char WorkAreaBase []; - -/* - * CPU-space access - */ -#define m68k_set_acr2(_acr2) __asm__ volatile ("movec %0,#0x0005" : : "d" (_acr2)) -#define m68k_set_acr3(_acr3) __asm__ volatile ("movec %0,#0x0007" : : "d" (_acr3)) - -/* - * Set initial CACR mode, mainly enables branch/instruction/data cache. The - * FPU must be switched on in the BSP startup code since the - * _Thread_Start_multitasking() will restore the floating-point context of the - * initialization task if necessary. - */ -static const uint32_t BSP_CACR_INIT = MCF548X_CACR_DEC /* enable data cache */ - | MCF548X_CACR_BEC /* enable branch cache */ - | MCF548X_CACR_IEC /* enable instruction cache */ - | MCF548X_CACR_DDCM(DCACHE_ON_WRIGHTTHROUGH) - /* set data cache mode to write-through */ - | MCF548X_CACR_DESB /* enable data store buffer */ - | MCF548X_CACR_DDSP /* data access only in supv. mode */ - | MCF548X_CACR_IDSP; /* instr. access only in supv. mode */ - -/* - * CACR maintenance functions - */ - -void bsp_cacr_set_flags( uint32_t flags) -{ - rtems_interrupt_level level; - - rtems_interrupt_disable( level); - _CPU_cacr_shadow |= flags; - m68k_set_cacr( _CPU_cacr_shadow); - rtems_interrupt_enable( level); -} - -void bsp_cacr_set_self_clear_flags( uint32_t flags) -{ - rtems_interrupt_level level; - uint32_t cacr = 0; - - rtems_interrupt_disable( level); - cacr = _CPU_cacr_shadow | flags; - m68k_set_cacr( cacr); - rtems_interrupt_enable( level); -} - -void bsp_cacr_clear_flags( uint32_t flags) -{ - rtems_interrupt_level level; - - rtems_interrupt_disable( level); - _CPU_cacr_shadow &= ~flags; - m68k_set_cacr( _CPU_cacr_shadow); - rtems_interrupt_enable( level); -} - -/* - * Coldfire acr and mmu settings - */ - static void acr_mmu_mapping(void) - { - - /* - * Cache disabled for internal register area (256 kB). - * Choose the smallest maskable size of 1MB. - */ - m68k_set_acr0(MCF548X_ACR_BA((uint32_t)(__MBAR)) | - MCF548X_ACR_ADMSK_AMM((uint32_t)(0xFFFFF)) | - MCF548X_ACR_E | - MCF548X_ACR_SP /* supervisor protection */ | - MCF548X_ACR_S(S_ACCESS_SUPV) /* always in supervisor mode */ | - MCF548X_ACR_CM(CM_OFF_PRECISE)); - -#ifdef M5484FIREENGINE - - - /* - * Cache enabled for entire SDRAM (64 MB) - */ - m68k_set_acr1(MCF548X_ACR_BA((uint32_t)(_SdramBase)) | - MCF548X_ACR_ADMSK_AMM((uint32_t)(_SdramSize - 1)) | - MCF548X_ACR_E | - MCF548X_ACR_SP /* supervisor protection */ | - MCF548X_ACR_S(S_ACCESS_SUPV) /* always in supervisor mode */ | - MCF548X_ACR_CM(CM_ON_WRIGHTTHROUGH)); - - /* - * Cache enabled for entire boot flash (2 MB) - */ - m68k_set_acr2(MCF548X_ACR_BA((uint32_t)(_BootFlashBase)) | - MCF548X_ACR_ADMSK_AMM((uint32_t)(_BootFlashSize - 1)) | - MCF548X_ACR_E | - MCF548X_ACR_SP /* supervisor protection */ | - MCF548X_ACR_S(S_ACCESS_SUPV) /* always in supervisor mode */ | - MCF548X_ACR_CM(CM_ON_COPYBACK)); - - /* - * Cache enabled for entire code flash (16 MB) - */ - m68k_set_acr3(MCF548X_ACR_BA((uint32_t)(_CodeFlashBase)) | - MCF548X_ACR_ADMSK_AMM((uint32_t)(_CodeFlashSize - 1)) | - MCF548X_ACR_E | - MCF548X_ACR_SP /* supervisor protection */ | - MCF548X_ACR_S(S_ACCESS_SUPV) /* always in supervisor mode */ | - MCF548X_ACR_CM(CM_ON_COPYBACK)); -#endif - - } - -/* - * bsp_start - * - * This routine does the bulk of the system initialisation. - */ -void bsp_start( void ) -{ - /* Initialize CACR shadow register */ - _CPU_cacr_shadow = BSP_CACR_INIT; - - /* - * Load the shadow variable of CACR with initial mode and write it to the - * CACR. Interrupts are still disabled, so there is no need for surrounding - * rtems_interrupt_enable() / rtems_interrupt_disable(). - */ - m68k_set_cacr( _CPU_cacr_shadow); - - /* - * do mapping of acr's and/or mmu - */ - acr_mmu_mapping(); -} - - -/* - * Get the XLB clock speed - */ -uint32_t get_CPU_clock_speed(void) -{ - return (uint32_t)BSP_CPU_CLOCK_SPEED; -} |