diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc64/shared/clock/ckinit.c')
| -rw-r--r-- | c/src/lib/libbsp/sparc64/shared/clock/ckinit.c | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/c/src/lib/libbsp/sparc64/shared/clock/ckinit.c b/c/src/lib/libbsp/sparc64/shared/clock/ckinit.c deleted file mode 100644 index c014a73b9e..0000000000 --- a/c/src/lib/libbsp/sparc64/shared/clock/ckinit.c +++ /dev/null @@ -1,122 +0,0 @@ -/* ckinit.c - * - * This file provides a template for the clock device driver initialization. - * - * Modified for sun4v - niagara - */ - -/* - * Copyright (c) 2010 Gedare Bloom. - * - * 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 <stdlib.h> - -#include <rtems.h> -#include <bsp.h> -#include <bspopts.h> -#include <boot/ofw.h> -#include <rtems/bspIo.h> - -/* This is default frequency for simics simulator of niagara. Use the - * get_Frequency function to determine the CPU clock frequency at runtime. - */ -#define CPU_FREQ (5000000) - -uint64_t sparc64_cycles_per_tick; - -/* TICK_CMPR and STICK_CMPR trigger soft interrupt 14 */ -#define CLOCK_VECTOR SPARC_SYNCHRONOUS_TRAP(0x4E) - -static unsigned int get_Frequency(void) -{ - phandle root = ofw_find_device("/"); - unsigned int freq; - - if (ofw_get_property(root, "clock-frequency", &freq, sizeof(freq)) <= 0) { - printk("Unable to determine frequency, default: 0x%x\n",CPU_FREQ); - return CPU_FREQ; - } - - return freq; -} - -#define Clock_driver_support_at_tick() \ - Clock_driver_support_at_tick_helper() - -static void Clock_driver_support_at_tick_helper(void) -{ - uint64_t tick_reg; - int bit_mask; - uint64_t pil_reg; - - bit_mask = SPARC_SOFTINT_TM_MASK | SPARC_SOFTINT_SM_MASK | (1<<14); - sparc64_clear_interrupt_bits(bit_mask); - - sparc64_get_pil(pil_reg); - if(pil_reg == 0xe) { /* 0xe is the tick compare interrupt (softint(14)) */ - pil_reg--; - sparc64_set_pil(pil_reg); /* enable the next timer interrupt */ - } - /* Note: sun4v uses stick_cmpr for clock driver for M5 simulator, which - * does not currently have tick_cmpr implemented */ - /* TODO: this could be more efficiently implemented as a single assembly - * inline */ -#if defined (SUN4U) - sparc64_read_tick(tick_reg); -#elif defined (SUN4V) - sparc64_read_stick(tick_reg); -#endif - tick_reg &= ~(1UL<<63); /* mask out NPT bit, prevents int_dis from being set */ - - tick_reg += sparc64_cycles_per_tick; - -#if defined (SUN4U) - sparc64_write_tick_cmpr(tick_reg); -#elif defined (SUN4V) - sparc64_write_stick_cmpr(tick_reg); -#endif -} - -#define Clock_driver_support_install_isr(_new) \ - set_vector( _new, CLOCK_VECTOR, 1 ) - -static void Clock_driver_support_initialize_hardware(void) -{ - uint64_t tick_reg; - int bit_mask; - - bit_mask = SPARC_SOFTINT_TM_MASK | SPARC_SOFTINT_SM_MASK | (1<<14); - sparc64_clear_interrupt_bits(bit_mask); - - sparc64_cycles_per_tick = - rtems_configuration_get_microseconds_per_tick()*(get_Frequency()/1000000); - -#if defined (SUN4U) - sparc64_read_tick(tick_reg); -#elif defined (SUN4V) - sparc64_read_stick(tick_reg); -#endif - - tick_reg &= ~(1UL<<63); /* mask out NPT bit, prevents int_dis from being set */ - tick_reg += sparc64_cycles_per_tick; - -#if defined (SUN4U) - sparc64_write_tick_cmpr(tick_reg); -#elif defined (SUN4V) - sparc64_write_stick_cmpr(tick_reg); -#endif -} - -#define Clock_driver_support_shutdown_hardware( ) \ - do { \ - \ - } while ( 0 ) - -#define CLOCK_DRIVER_USE_DUMMY_TIMECOUNTER - -#include "../../../shared/clockdrv_shell.h" - |