diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/beatnik/irq/irq_init.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/beatnik/irq/irq_init.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/beatnik/irq/irq_init.c b/c/src/lib/libbsp/powerpc/beatnik/irq/irq_init.c new file mode 100644 index 0000000000..29499597f8 --- /dev/null +++ b/c/src/lib/libbsp/powerpc/beatnik/irq/irq_init.c @@ -0,0 +1,112 @@ +/* irq_init.c + * + * This file contains the implementation of rtems initialization + * related to interrupt handling. + * + * CopyRight (C) 1999 valette@crf.canon.fr + * + * Enhanced by Jay Kulpinski <jskulpin@eng01.gdds.com> + * to make it valid for MVME2300 Motorola boards. + * + * Modified by T. Straumann for the 'beatnik' BSP. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#include <rtems.h> +#include <bsp.h> +#include <bsp/irq.h> +#include <bsp/vectors.h> +#include <rtems/bspIo.h> + +#if 0 +#include <libcpu/io.h> +#include <libcpu/spr.h> +#include <bsp/pci.h> +#include <bsp/residual.h> +#include <bsp/openpic.h> +#include <bsp/irq.h> +#include <bsp.h> +#include <bsp/motorola.h> +#endif + +/* +#define SHOW_ISA_PCI_BRIDGE_SETTINGS +*/ + +extern unsigned int external_exception_vector_prolog_code_size[]; +extern void external_exception_vector_prolog_code(void); +extern unsigned int decrementer_exception_vector_prolog_code_size[]; +extern void decrementer_exception_vector_prolog_code(void); + +/* + * default handler + */ +static void nop_func(void *arg){} + +static rtems_irq_connect_data rtemsIrq[BSP_IRQ_NUMBER]; +static rtems_irq_global_settings initial_config; +static rtems_irq_prio rtemsPrioTbl[BSP_IRQ_NUMBER]; +static rtems_irq_connect_data defaultIrq = { + name: 0, + hdl: nop_func, + handle: 0, + on: 0, + off: 0, + isOn: 0 +}; + + + /* + * This code assumes the exceptions management setup has already + * been done. We just need to replace the exceptions that will + * be handled like interrupt. On mcp750/mpc750 and many PPC processors + * this means the decrementer exception and the external exception. + */ + +void BSP_rtems_irq_mng_init(unsigned cpuId) +{ +int i; + + /* + * First initialize the Interrupt management hardware + */ + + /* + * Initialize Rtems management interrupt table + */ + + /* + * re-init the rtemsIrq table + */ + for (i = BSP_LOWEST_OFFSET; i <= BSP_MAX_OFFSET; i++) { + rtemsIrq[i] = defaultIrq; + rtemsIrq[i].name = i; + rtemsPrioTbl[i] = BSP_IRQ_DEFAULT_PRIORITY; + } + + /* + * Init initial Interrupt management config + */ + initial_config.irqNb = BSP_IRQ_NUMBER; + initial_config.defaultEntry = defaultIrq; + initial_config.irqHdlTbl = rtemsIrq; + initial_config.irqBase = BSP_LOWEST_OFFSET; + initial_config.irqPrioTbl = rtemsPrioTbl; + + if (!BSP_rtems_irq_mngt_set(&initial_config)) { + /* + * put something here that will show the failure... + */ + BSP_panic("Unable to initialize RTEMS interrupt Management!!! System locked\n"); + } + +#ifdef TRACE_IRQ_INIT + printk("RTEMS IRQ management is now operationnal\n"); +#endif +} + |