RTOS/rtems
1
0
Fork 0
forked from Imagelibrary/rtems
Code Pull Requests Activity

bsps/powerpc: Exception initialization error is fatal

Browse Source
This commit is contained in:
Sebastian Huber
2012-11-14 09:57:55 +01:00
parent dd8df59413
commit b1e8a580bc
22 changed files with 48 additions and 107 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_initialize.c
View File

@@ -12,7 +12,7 @@
*
* Copyright (C) 2007 Till Straumann <strauman@slac.stanford.edu>
*
* Copyright (C) 2009 embedded brains GmbH.
* Copyright (C) 2009-2012 embedded brains GmbH.
*
* Derived from file "libcpu/powerpc/new-exceptions/bspsupport/vectors_init.c".
* Derived from file "libcpu/powerpc/new-exceptions/e500_raw_exc_init.c".
@@ -25,6 +25,7 @@
#include <rtems.h>
#include <bsp/vectors.h>
#include <bsp/bootcard.h>
uint32_t ppc_exc_cache_wb_check = 1;
@@ -71,7 +72,15 @@ static void ppc_exc_initialize_booke(void)
}
}
rtems_status_code ppc_exc_initialize(
static void ppc_exc_fatal_error(void)
{
rtems_fatal(
RTEMS_FATAL_SOURCE_BSP_GENERIC,
BSP_GENERIC_FATAL_EXCEPTION_INITIALIZATION
);
}
void ppc_exc_initialize(
uint32_t interrupt_disable_mask,
uintptr_t interrupt_stack_begin,
uintptr_t interrupt_stack_size
@@ -86,7 +95,7 @@ rtems_status_code ppc_exc_initialize(
uint32_t r13 = 0;
if (categories == NULL) {
return RTEMS_NOT_IMPLEMENTED;
ppc_exc_fatal_error();
}
/* Assembly code needs SDA_BASE in r13 (SVR4 or EABI). Make sure
@@ -100,7 +109,7 @@ rtems_status_code ppc_exc_initialize(
);
if (sda_base != r13) {
return RTEMS_NOT_CONFIGURED;
ppc_exc_fatal_error();
}
/* Ensure proper interrupt stack alignment */
@@ -137,7 +146,7 @@ rtems_status_code ppc_exc_initialize(
sc = ppc_exc_make_prologue(vector, category, prologue, &prologue_size);
if (sc != RTEMS_SUCCESSFUL) {
return RTEMS_INTERNAL_ERROR;
ppc_exc_fatal_error();
}
ppc_code_copy(vector_address, prologue, prologue_size);
@@ -175,6 +184,4 @@ rtems_status_code ppc_exc_initialize(
__asm__ volatile ("dcbz 0, %0"::"b" (p));
/* If we make it thru here then things seem to be OK */
}
return RTEMS_SUCCESSFUL;
}

16
c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/vectors.h
View File

@@ -428,13 +428,17 @@ rtems_status_code ppc_exc_make_prologue(
/**
* @brief Initializes the exception handling.
*
* @retval RTEMS_SUCCESSFUL Successful initialization.
* @retval RTEMS_NOT_IMPLEMENTED No category set available for the current CPU.
* @retval RTEMS_NOT_CONFIGURED Register r13 does not point to the small data
* area anchor required by SVR4/EABI.
* @retval RTEMS_INTERNAL_ERROR Minimal prologue creation failed.
* If the initialization fails, then this is a fatal error. The fatal error
* source is RTEMS_FATAL_SOURCE_BSP_GENERIC and the fatal error code is
* BSP_GENERIC_FATAL_EXCEPTION_INITIALIZATION.
*
* Possible error reasons are
* - no category set available for the current CPU,
* - the register r13 does not point to the small data area anchor required by
* SVR4/EABI, or
* - the minimal prologue creation failed.
*/
rtems_status_code ppc_exc_initialize(
void ppc_exc_initialize(
uint32_t interrupt_disable_mask,
uintptr_t interrupt_stack_begin,
uintptr_t interrupt_stack_size