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| author | Daniel Hellstrom <daniel@gaisler.com> | 2014-05-20 17:45:07 +0200 |
|---|---|---|
| committer | Daniel Hellstrom <daniel@gaisler.com> | 2014-10-06 13:19:18 +0200 |
| commit | 9bd7b3b1a26adc41678ec4d4a1d97f057cdb43a7 (patch) | |
| tree | e696df2a0aa20c45ac84c3d5de06a53731599495 /c/src/lib/libbsp/sparc/leon3 | |
| parent | SPARC: add BSP specific error handler (diff) | |
| download | rtems-9bd7b3b1a26adc41678ec4d4a1d97f057cdb43a7.tar.bz2 | |
SPARC: Fatal_halt use source and exit codes
The Fatal_halt handler now have two options, either halt
as before or enter system error state to return to
debugger or simulator. The exit-code is now also
propagated to the debugger which is very useful for
testing.
The CPU_Fatal_halt handler was split up into two, since
the only the LEON3 support the CPU power down.
The LEON3 halt now uses the power-down instruction to save
CPU power. This doesn't stop a potential watch-dog timer
from expiring.
Diffstat (limited to 'c/src/lib/libbsp/sparc/leon3')
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/Makefile.am | 1 | ||||
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/configure.ac | 5 | ||||
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/startup/bsp_fatal_halt.c | 36 |
3 files changed, 42 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/leon3/Makefile.am b/c/src/lib/libbsp/sparc/leon3/Makefile.am index b8079c64d1..fa297acdc4 100644 --- a/c/src/lib/libbsp/sparc/leon3/Makefile.am +++ b/c/src/lib/libbsp/sparc/leon3/Makefile.am @@ -42,6 +42,7 @@ libbsp_a_SOURCES += ../../shared/bspclean.c ../../shared/bsplibc.c \ libbsp_a_SOURCES += startup/bspreset.c libbsp_a_SOURCES += startup/cpucounter.c libbsp_a_SOURCES += ../../sparc/shared/startup/bsp_fatal_exit.c +libbsp_a_SOURCES += startup/bsp_fatal_halt.c # ISR Handler libbsp_a_SOURCES += ../../sparc/shared/cpu.c diff --git a/c/src/lib/libbsp/sparc/leon3/configure.ac b/c/src/lib/libbsp/sparc/leon3/configure.ac index 3fe1e48024..8ace8a30fd 100644 --- a/c/src/lib/libbsp/sparc/leon3/configure.ac +++ b/c/src/lib/libbsp/sparc/leon3/configure.ac @@ -38,6 +38,11 @@ RTEMS_BSPOPTS_HELP([BSP_LEON3_SMP], [Always defined when on a LEON3 to enable the LEON3 support for determining the CPU core number in an SMP configuration.]) +RTEMS_BSPOPTS_SET([BSP_POWER_DOWN_AT_FATAL_HALT],[*],[]) +RTEMS_BSPOPTS_HELP([BSP_POWER_DOWN_AT_FATAL_HALT], +[If defined, CPU is powered down on fatal exit. Otherwise generate system + error which will hand over to debugger, simulator, etc.]) + RTEMS_BSP_CLEANUP_OPTIONS(0, 1, 1) RTEMS_BSP_LINKCMDS diff --git a/c/src/lib/libbsp/sparc/leon3/startup/bsp_fatal_halt.c b/c/src/lib/libbsp/sparc/leon3/startup/bsp_fatal_halt.c new file mode 100644 index 0000000000..2f4bd3af33 --- /dev/null +++ b/c/src/lib/libbsp/sparc/leon3/startup/bsp_fatal_halt.c @@ -0,0 +1,36 @@ +/** + * @file + * @ingroup sparc_leon3 + * @brief LEON3 BSP Fatal_halt handler. + * + * COPYRIGHT (c) 2014. + * Aeroflex Gaisler AB. + * + * 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. + */ + +#include <leon.h> +#include <rtems/score/sparc.h> + +#ifdef BSP_POWER_DOWN_AT_FATAL_HALT + +/* Power down LEON CPU on fatal error exit */ +void _CPU_Fatal_halt(uint32_t source, uint32_t error) +{ + sparc_disable_interrupts(); + leon3_power_down_loop(); +} + +#else + +/* return to debugger, simulator, hypervisor or similar by exiting + * with an error code. g1=1, g2=FATAL_SOURCE, G3=error-code. + */ +void _CPU_Fatal_halt(uint32_t source, uint32_t error) +{ + sparc_syscall_exit(source, error); +} + +#endif |