FreeCalypso > hg > fc-tourmaline
view src/nucleus/tcf.c @ 281:a75eefbf8be4
Phone boot with PWON: weed out short button presses
Every standard end user phone has a design provision, most naturally
implemented in firmware, whereby the PWON button effects a boot only
if it is held down long enough - short presses of this PWON button
are detected, assumed to be spurious and cause the fw to power back off
instead of proceeding with boot. The present change introduces this
standard function in FreeCalypso.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Fri, 24 Sep 2021 02:03:08 +0000 |
| parents | 4e78acac3d88 |
| children |
line wrap: on
line source
/*************************************************************************/ /* */ /* Copyright Mentor Graphics Corporation 2002 */ /* All Rights Reserved. */ /* */ /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ /* SUBJECT TO LICENSE TERMS. */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* FILE NAME VERSION */ /* */ /* tcf.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* TC - Thread Control */ /* */ /* DESCRIPTION */ /* */ /* This file contains information (fact) routines for the Thread */ /* Control component. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* TCF_Established_Tasks Number of created tasks */ /* TCF_Established_HISRs Number of created HISRs */ /* TCF_Task_Pointers Build list of task pointers */ /* TCF_HISR_Pointers Build list of HISR pointers */ /* TCF_Task_Information Retrieve task information */ /* TCF_HISR_Information Retrieve HISR information */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* in_extr.h Initialization/Interrupt */ /* functions */ /* tm_extr.h Timer Control function */ /* er_extr.h Error handling function */ /* hi_extr.h History functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1994 Created initial version 1.1 from */ /* original 1.0g version of TCC.C */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 04-17-1996 updated to version 1.2 */ /* 11-18-1996 Protected Informational service */ /* from NULL Control Block pointers */ /* creating 1.2a. (SPR220) */ /* 03-24-1998 Released version 1.3. */ /* 03-26-1999 Released 1.11m (new release */ /* numbering scheme) */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #define NU_SOURCE_FILE #include "cs_extr.h" /* Common service functions */ #include "tc_extr.h" /* Thread control functions */ #include "in_extr.h" /* Initialization/Interrupt */ /* functions */ #include "tm_extr.h" /* Timer control functions */ #include "er_extr.h" /* Error handling function */ #include "hi_extr.h" /* History functions */ /* Define external inner-component global data references. */ extern CS_NODE *TCD_Created_Tasks_List; extern UNSIGNED TCD_Total_Tasks; extern TC_TCB *TCD_Priority_List[TC_PRIORITIES]; extern UNSIGNED TCD_Priority_Groups; extern DATA_ELEMENT TCD_Sub_Priority_Groups[TC_MAX_GROUPS]; extern UNSIGNED_CHAR TCD_Lowest_Set_Bit[]; extern INT TCD_Highest_Priority; extern TC_TCB *TCD_Execute_Task; extern VOID *TCD_Current_Thread; extern UNSIGNED_CHAR TCD_Registered_LISRs[NU_MAX_VECTORS+1]; extern VOID (*TCD_LISR_Pointers[NU_MAX_LISRS+1])(INT vector); extern INT TCD_Interrupt_Count; extern INT TCD_Stack_Switched; extern TC_PROTECT TCD_List_Protect; extern TC_PROTECT TCD_Schedule_Protect; extern TC_PROTECT TCD_LISR_Protect; extern CS_NODE *TCD_Created_HISRs_List; extern UNSIGNED TCD_Total_HISRs; extern TC_PROTECT TCD_HISR_Protect; extern INT TCD_Unhandled_Interrupt; /* Define external inner-component function calls that are not available to other components. */ VOID TCT_Build_Task_Stack(TC_TCB *task_ptr); VOID TCT_Build_HISR_Stack(TC_HCB *hisr_ptr); VOID TCT_Build_Signal_Frame(TC_TCB *task_ptr); VOID TCT_Protect_Switch(TC_TCB *task); VOID TCT_Signal_Exit(VOID); /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCF_Established_Tasks */ /* */ /* DESCRIPTION */ /* */ /* This function returns the current number of established tasks. */ /* Tasks previously deleted are no longer considered established. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* */ /* INPUTS */ /* */ /* None */ /* */ /* OUTPUTS */ /* */ /* TCD_Total_Tasks Number of established tasks */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* */ /*************************************************************************/ UNSIGNED TCF_Established_Tasks(VOID) { #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Return the number of established tasks. */ return(TCD_Total_Tasks); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCF_Established_HISRs */ /* */ /* DESCRIPTION */ /* */ /* This function returns the current number of established HISRs. */ /* HISRs previously deleted are no longer considered established. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* */ /* INPUTS */ /* */ /* None */ /* */ /* OUTPUTS */ /* */ /* TCD_Total_HISRs Number of established HISRs */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* */ /*************************************************************************/ UNSIGNED TCF_Established_HISRs(VOID) { #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Return the number of established HISRs. */ return(TCD_Total_HISRs); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCF_Task_Pointers */ /* */ /* DESCRIPTION */ /* */ /* This function builds a list of task pointers, starting at the */ /* specified location. The number of task pointers placed in the */ /* list is equivalent to the total number of tasks or the maximum */ /* number of pointers specified in the call. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_System_Protect Protect task created list */ /* TCT_Unprotect Release protection of list */ /* */ /* INPUTS */ /* */ /* pointer_list Pointer to the list area */ /* maximum_pointers Maximum number of pointers */ /* */ /* OUTPUTS */ /* */ /* pointers Number of tasks placed in */ /* list */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 08-09-1993 Corrected pointer retrieval */ /* loop, resulting in version 1.0c */ /* 08-09-1993 Verified version 1.0c */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ UNSIGNED TCF_Task_Pointers(NU_TASK **pointer_list, UNSIGNED maximum_pointers) { CS_NODE *node_ptr; /* Pointer to each TCB */ UNSIGNED pointers; /* Number of pointers in list*/ NU_SUPERV_USER_VARIABLES /* Switch to supervisor mode */ NU_SUPERVISOR_MODE(); #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Initialize the number of pointers returned. */ pointers = 0; /* Protect the task created list. */ TCT_Protect(&TCD_List_Protect); /* Loop until all task pointers are in the list or until the maximum list size is reached. */ node_ptr = TCD_Created_Tasks_List; while ((node_ptr) && (pointers < maximum_pointers)) { /* Place the node into the destination list. */ *pointer_list++ = (NU_TASK *) node_ptr; /* Increment the pointers variable. */ pointers++; /* Position the node pointer to the next node. */ node_ptr = node_ptr -> cs_next; /* Determine if the pointer is at the head of the list. */ if (node_ptr == TCD_Created_Tasks_List) /* The list search is complete. */ node_ptr = NU_NULL; } /* Release protection. */ TCT_Unprotect(); /* Return to user mode */ NU_USER_MODE(); /* Return the number of pointers in the list. */ return(pointers); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCF_HISR_Pointers */ /* */ /* DESCRIPTION */ /* */ /* This function builds a list of HISR pointers, starting at the */ /* specified location. The number of HISR pointers placed in the */ /* list is equivalent to the total number of HISRs or the maximum */ /* number of pointers specified in the call. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_Protect Protect HISR created list */ /* TCT_Unprotect Release protection of list */ /* */ /* INPUTS */ /* */ /* pointer_list Pointer to the list area */ /* maximum_pointers Maximum number of pointers */ /* */ /* OUTPUTS */ /* */ /* Number of HISRs placed in */ /* list */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 08-09-1993 Corrected pointer retrieval */ /* loop, resulting in version 1.0c */ /* 08-09-1993 Verified version 1.0c */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ UNSIGNED TCF_HISR_Pointers(NU_HISR **pointer_list, UNSIGNED maximum_pointers) { CS_NODE *node_ptr; /* Pointer to each TCB */ UNSIGNED pointers; /* Number of pointers in list*/ NU_SUPERV_USER_VARIABLES /* Switch to supervisor mode */ NU_SUPERVISOR_MODE(); #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Initialize the number of pointers returned. */ pointers = 0; /* Protect the HISR created list. */ TCT_Protect(&TCD_HISR_Protect); /* Loop until all HISR pointers are in the list or until the maximum list size is reached. */ node_ptr = TCD_Created_HISRs_List; while ((node_ptr) && (pointers < maximum_pointers)) { /* Place the node into the destination list. */ *pointer_list++ = (NU_HISR *) node_ptr; /* Increment the pointers variable. */ pointers++; /* Position the node pointer to the next node. */ node_ptr = node_ptr -> cs_next; /* Determine if the pointer is at the head of the list. */ if (node_ptr == TCD_Created_HISRs_List) /* The list search is complete. */ node_ptr = NU_NULL; } /* Release protection. */ TCT_Unprotect(); /* Return to user mode */ NU_USER_MODE(); /* Return the number of pointers in the list. */ return(pointers); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCF_Task_Information */ /* */ /* DESCRIPTION */ /* */ /* This function returns information about the specified task. */ /* However, if the supplied task pointer is invalid, the function */ /* simply returns an error status. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_System_Protect Protect scheduling info */ /* TCT_Unprotect Release protection */ /* */ /* INPUTS */ /* */ /* task_ptr Pointer to the task */ /* name Destination for the name */ /* status Destination for task status */ /* scheduled_count Destination for scheduled */ /* count of the task */ /* priority Destination for task priority*/ /* preempt Destination for preempt flag */ /* time_slice Destination for time slice */ /* stack_base Destination for pointer to */ /* base of task's stack */ /* stack_size Destination for stack size */ /* minimum_stack Destination for the minimum */ /* running size of the stack */ /* */ /* OUTPUTS */ /* */ /* NU_SUCCESS If a valid task pointer is */ /* supplied */ /* NU_INVALID_TASK If task pointer is invalid */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* added register optimizations, */ /* changed protection logic, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 11-18-1996 Corrected SPR220. */ /* */ /*************************************************************************/ STATUS TCF_Task_Information(NU_TASK *task_ptr, CHAR *name, DATA_ELEMENT *status, UNSIGNED *scheduled_count, DATA_ELEMENT *priority, OPTION *preempt, UNSIGNED *time_slice, VOID **stack_base, UNSIGNED *stack_size, UNSIGNED *minimum_stack) { R1 TC_TCB *task; /* Task control block ptr */ INT i; /* Working index */ STATUS completion; /* Completion status */ NU_SUPERV_USER_VARIABLES /* Switch to supervisor mode */ NU_SUPERVISOR_MODE(); /* Move task control block pointer into internal pointer. */ task = (TC_TCB *) task_ptr; #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Determine if this task is valid. */ if ((task != NU_NULL) && (task -> tc_id == TC_TASK_ID)) { /* Protect against scheduling changes. */ TCT_System_Protect(); /* The task pointer is successful. Reflect this in the completion status and fill in the actual information. */ completion = NU_SUCCESS; /* Copy the task's name. */ for (i = 0; i < NU_MAX_NAME; i++) *name++ = task -> tc_name[i]; /* Determine the preemption posture. */ if (task -> tc_preemption) *preempt = NU_PREEMPT; else *preempt = NU_NO_PREEMPT; /* Setup the remaining fields. */ *status = task -> tc_status; *scheduled_count = task -> tc_scheduled; *priority = task -> tc_priority; *time_slice = task -> tc_time_slice; *stack_base = task -> tc_stack_start; *stack_size = task -> tc_stack_size; *minimum_stack = task -> tc_stack_minimum; /* Release protection. */ TCT_Unprotect(); } else /* Indicate that the task pointer is invalid. */ completion = NU_INVALID_TASK; /* Return to user mode */ NU_USER_MODE(); /* Return the appropriate completion status. */ return(completion); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCF_HISR_Information */ /* */ /* DESCRIPTION */ /* */ /* This function returns information about the specified HISR. */ /* However, if the supplied HISR pointer is invalid, the function */ /* simply returns an error status. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_System_Protect Protect scheduling info */ /* TCT_Unprotect Release protection */ /* */ /* INPUTS */ /* */ /* hisr_ptr Pointer to the hisr */ /* name Destination for the name */ /* scheduled_count Destination for scheduled */ /* count of the HISR */ /* priority Destination for HISR priority*/ /* stack_base Destination for pointer to */ /* base of HISR's stack */ /* stack_size Destination for stack size */ /* minimum_stack Destination for the minimum */ /* running size of the stack */ /* */ /* OUTPUTS */ /* */ /* NU_SUCCESS If a valid HISR pointer is */ /* supplied */ /* NU_INVALID_HISR If HISR pointer is invalid */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* added register optimizations, */ /* changed protection logic, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 11-18-1996 Corrected SPR220. */ /* */ /*************************************************************************/ STATUS TCF_HISR_Information(NU_HISR *hisr_ptr, CHAR *name, UNSIGNED *scheduled_count, DATA_ELEMENT *priority, VOID **stack_base, UNSIGNED *stack_size, UNSIGNED *minimum_stack) { R1 TC_HCB *hisr; /* HISR control block ptr */ INT i; /* Working index */ STATUS completion; /* Completion status */ NU_SUPERV_USER_VARIABLES /* Switch to supervisor mode */ NU_SUPERVISOR_MODE(); /* Move input HISR control block pointer into internal pointer. */ hisr = (TC_HCB *) hisr_ptr; #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Determine if this HISR is valid. */ if ((hisr != NU_NULL) && (hisr -> tc_id == TC_HISR_ID)) { /* Protect against scheduling changes. */ TCT_System_Protect(); /* The HISR pointer is successful. Reflect this in the completion status and fill in the actual information. */ completion = NU_SUCCESS; /* Copy the hisr's name. */ for (i = 0; i < NU_MAX_NAME; i++) *name++ = hisr -> tc_name[i]; /* Setup the remaining fields. */ *scheduled_count = hisr -> tc_scheduled; *priority = hisr -> tc_priority; *stack_base = hisr -> tc_stack_start; *stack_size = hisr -> tc_stack_size; *minimum_stack = hisr -> tc_stack_minimum; /* Release protection. */ TCT_Unprotect(); } else /* Indicate that the HISR pointer is invalid. */ completion = NU_INVALID_HISR; /* Return to user mode */ NU_USER_MODE(); /* Return the appropriate completion status. */ return(completion); }