FreeCalypso > hg > fc-tourmaline
view src/nucleus/evf.c @ 223:740a8e8fc9d7
startup sync logic rework for the new PWON button boot scheme
Previously we added logic to the MMI task to hold off PEI init until
R2D is running, and then extended that condition to wait for FCHG
init too. However, the dependencies of MMI upon R2D and FCHG don't
start until mmiInit(), and that call is driven by Switch_ON() code,
hence the wait for R2D and FCHG init can be made in that code path
instead of the MMI task. Furthermore, with our new way of signaling
PWON button boot to MMI, we need a new wait to ensure that the MMI
task is up - previously this assurance was provided by the wait for
Kp pointers to be set.
Solution: revert our previous PEI init hold-off additions to MMI,
add a new flag indicating MMI task init done, and put the combined
wait for all needed conditions into our new PWON button boot code
in power.c.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Tue, 27 Apr 2021 06:24:52 +0000 |
| parents | 4e78acac3d88 |
| children |
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/*************************************************************************/ /* */ /* 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 */ /* */ /* evf.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* EV - Event Group Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains routines to obtain facts about the Event */ /* Group Management component. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* EVF_Established_Event_Groups Number of created groups */ /* EVF_Event_Group_Pointers Build event group pointer */ /* list */ /* EVF_Event_Group_Information Retrieve event group info */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* ev_extr.h Event Group functions */ /* hi_extr.h History functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1994 Initial version of event fact */ /* service file, version 1.1 */ /* */ /* 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 "ev_extr.h" /* Event Group functions */ #include "hi_extr.h" /* History functions */ /* Define external inner-component global data references. */ extern CS_NODE *EVD_Created_Event_Groups_List; extern UNSIGNED EVD_Total_Event_Groups; extern TC_PROTECT EVD_List_Protect; /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* EVF_Established_Event_Groups */ /* */ /* DESCRIPTION */ /* */ /* This function returns the current number of established */ /* event groups. Event groups previously deleted are no longer */ /* considered established. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* */ /* INPUTS */ /* */ /* None */ /* */ /* OUTPUTS */ /* */ /* EVD_Total_Event_Groups Number of established */ /* event groups */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ UNSIGNED EVF_Established_Event_Groups(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 event groups. */ return(EVD_Total_Event_Groups); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* EVF_Event_Group_Pointers */ /* */ /* DESCRIPTION */ /* */ /* This function builds a list of event group pointers, starting at */ /* the specified location. The number of event group pointers */ /* placed in the list is equivalent to the total number of */ /* event groups or the maximum number of pointers specified in the */ /* call. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_Protect Protect created list */ /* TCT_Unprotect Release protection */ /* */ /* INPUTS */ /* */ /* pointer_list Pointer to the list area */ /* maximum_pointers Maximum number of pointers */ /* */ /* OUTPUTS */ /* */ /* pointers Number of event groups placed*/ /* in the 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 1.0a */ /* 08-09-1993 Verified version 1.0a */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ UNSIGNED EVF_Event_Group_Pointers(NU_EVENT_GROUP **pointer_list, UNSIGNED maximum_pointers) { CS_NODE *node_ptr; /* Pointer to each GCB */ 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 against access to the list of created event groups. */ TCT_Protect(&EVD_List_Protect); /* Loop until all event group pointers are in the list or until the maximum list size is reached. */ node_ptr = EVD_Created_Event_Groups_List; while ((node_ptr) && (pointers < maximum_pointers)) { /* Place the node into the destination list. */ *pointer_list++ = (NU_EVENT_GROUP *) 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 == EVD_Created_Event_Groups_List) /* The list search is complete. */ node_ptr = NU_NULL; } /* Release protection against access to the list of created event groups. */ TCT_Unprotect(); /* Return to user mode */ NU_USER_MODE(); /* Return the number of pointers in the list. */ return(pointers); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* EVF_Event_Group_Information */ /* */ /* DESCRIPTION */ /* */ /* This function returns information about the specified event */ /* group. However, if the supplied event group pointer is invalid, */ /* the function simply returns an error status. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_System_Protect Protect event group */ /* TCT_Unprotect Release protection */ /* */ /* INPUTS */ /* */ /* event_group_ptr Pointer to the event group */ /* name Destination for the name */ /* event_flags Pointer to a variable to hold*/ /* the current event flags */ /* tasks_waiting Destination for the tasks */ /* waiting count */ /* first_task Destination for the pointer */ /* to the first task waiting */ /* */ /* OUTPUTS */ /* */ /* NU_SUCCESS If a valid event group */ /* pointer is supplied */ /* NU_INVALID_GROUP If event group pointer is */ /* not valid */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 11-18-1996 Corrected SPR220. */ /* */ /*************************************************************************/ STATUS EVF_Event_Group_Information(NU_EVENT_GROUP *event_group_ptr, CHAR *name, UNSIGNED *event_flags, UNSIGNED *tasks_waiting, NU_TASK **first_task) { EV_GCB *event_group; /* Event control block ptr */ INT i; /* Working integer variable */ STATUS completion; /* Completion status */ NU_SUPERV_USER_VARIABLES /* Switch to supervisor mode */ NU_SUPERVISOR_MODE(); /* Move input event group pointer into internal pointer. */ event_group = (EV_GCB *) event_group_ptr; #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Determine if this event_group id is valid. */ if ((event_group != NU_NULL) && (event_group -> ev_id == EV_EVENT_ID)) { /* Setup protection of the event_group. */ TCT_System_Protect(); /* The event_group pointer is valid. Reflect this in the completion status and fill in the actual information. */ completion = NU_SUCCESS; /* Copy the event_group's name. */ for (i = 0; i < NU_MAX_NAME; i++) *name++ = event_group -> ev_name[i]; /* Return the current event flags. */ *event_flags = event_group -> ev_current_events; /* Retrieve the number of tasks waiting and the pointer to the first task waiting. */ *tasks_waiting = event_group -> ev_tasks_waiting; if (event_group -> ev_suspension_list) /* There is a task waiting. */ *first_task = (NU_TASK *) (event_group -> ev_suspension_list) -> ev_suspended_task; else /* There are no tasks waiting. */ *first_task = NU_NULL; /* Release protection of the event group. */ TCT_Unprotect(); } else /* Indicate that the event group pointer is invalid. */ completion = NU_INVALID_GROUP; /* Return to user mode */ NU_USER_MODE(); /* Return the appropriate completion status. */ return(completion); }