diff options
| -rw-r--r-- | arch/sparc/cpu/leon2/cpu_init.c | 45 | ||||
| -rw-r--r-- | arch/sparc/cpu/leon2/interrupts.c | 14 | ||||
| -rw-r--r-- | arch/sparc/cpu/leon3/cpu_init.c | 60 | ||||
| -rw-r--r-- | arch/sparc/cpu/leon3/interrupts.c | 11 | ||||
| -rw-r--r-- | arch/sparc/include/asm/u-boot.h | 43 | ||||
| -rw-r--r-- | arch/sparc/lib/Makefile | 6 | ||||
| -rw-r--r-- | arch/sparc/lib/board.c | 398 | ||||
| -rw-r--r-- | arch/sparc/lib/interrupts.c | 30 | ||||
| -rw-r--r-- | arch/sparc/lib/time.c | 62 |
9 files changed, 7 insertions, 662 deletions
diff --git a/arch/sparc/cpu/leon2/cpu_init.c b/arch/sparc/cpu/leon2/cpu_init.c index b4d91e5039..9dfb99cb0f 100644 --- a/arch/sparc/cpu/leon2/cpu_init.c +++ b/arch/sparc/cpu/leon2/cpu_init.c @@ -14,9 +14,6 @@ #include <config.h> -#define TIMER_BASE_CLK 1000000 -#define US_PER_TICK (1000000 / CONFIG_SYS_HZ) - DECLARE_GLOBAL_DATA_PTR; /* @@ -77,48 +74,8 @@ int cpu_init_r(void) return 0; } -/* Uses Timer 0 to get accurate - * pauses. Max 2 raised to 32 ticks - * - */ -void cpu_wait_ticks(unsigned long ticks) -{ - unsigned long start = get_timer(0); - while (get_timer(start) < ticks) ; -} - -/* initiate and setup timer0 interrupt to configured HZ. Base clock is 1MHz. - * Return irq number for timer int or a negative number for - * dealing with self - */ -int timer_interrupt_init_cpu(void) -{ - LEON2_regs *leon2 = (LEON2_regs *) LEON2_PREGS; - - /* SYS_HZ ticks per second */ - leon2->Timer_Counter_1 = 0; - leon2->Timer_Reload_1 = (TIMER_BASE_CLK / CONFIG_SYS_HZ) - 1; - leon2->Timer_Control_1 = - (LEON2_TIMER_CTRL_EN | LEON2_TIMER_CTRL_RS | LEON2_TIMER_CTRL_LD); - - return LEON2_TIMER1_IRQNO; -} - -/* - * This function is intended for SHORT delays only. +/* initiate and setup timer0 to configured HZ. Base clock is 1MHz. */ -unsigned long cpu_usec2ticks(unsigned long usec) -{ - if (usec < US_PER_TICK) - return 1; - return usec / US_PER_TICK; -} - -unsigned long cpu_ticks2usec(unsigned long ticks) -{ - return ticks * US_PER_TICK; -} - int timer_init(void) { LEON2_regs *leon2 = (LEON2_regs *)LEON2_PREGS; diff --git a/arch/sparc/cpu/leon2/interrupts.c b/arch/sparc/cpu/leon2/interrupts.c index f78ec8a410..602e4a67ba 100644 --- a/arch/sparc/cpu/leon2/interrupts.c +++ b/arch/sparc/cpu/leon2/interrupts.c @@ -118,20 +118,6 @@ int interrupt_init_cpu(void) /****************************************************************************/ -/* Handle Timer 0 IRQ */ -void timer_interrupt_cpu(void *arg) -{ - LEON2_regs *leon2 = (LEON2_regs *) LEON2_PREGS; - - leon2->Timer_Control_1 = - (LEON2_TIMER_CTRL_EN | LEON2_TIMER_CTRL_RS | LEON2_TIMER_CTRL_LD); - - /* nothing to do here */ - return; -} - -/****************************************************************************/ - /* * Install and free a interrupt handler. */ diff --git a/arch/sparc/cpu/leon3/cpu_init.c b/arch/sparc/cpu/leon3/cpu_init.c index 9e294bfd0e..f25388cf84 100644 --- a/arch/sparc/cpu/leon3/cpu_init.c +++ b/arch/sparc/cpu/leon3/cpu_init.c @@ -11,7 +11,6 @@ #include <asm/asi.h> #include <asm/leon.h> #include <asm/io.h> -#include <asm/irq.h> #include <ambapp.h> #include <grlib/irqmp.h> #include <grlib/gptimer.h> @@ -29,9 +28,6 @@ #define CONFIG_SYS_GRLIB_GPTIMER_INDEX 0 #endif -#define TIMER_BASE_CLK 1000000 -#define US_PER_TICK (1000000 / CONFIG_SYS_HZ) - DECLARE_GLOBAL_DATA_PTR; ambapp_dev_irqmp *irqmp = NULL; @@ -142,63 +138,7 @@ int cpu_init_r(void) return 0; } -/* Busy wait a number of ms */ -void cpu_wait_ms_busy(unsigned long ms) -{ - unsigned int ms_delay; - volatile unsigned int tmp; - - /* ~10-20 cycles per decrement */ - ms_delay = leon_cpu_freq / (1000 * 10); - do { - /* Wait ~1ms */ - tmp = ms_delay; - while (tmp-- > 0) - ; - } while (--ms > 0); -} - -/* Uses Timer 0 to get accurate - * pauses. Max 2 raised to 32 ticks - * - */ -void cpu_wait_ticks(unsigned long ticks) -{ - unsigned long start; - - if (interrupt_is_enabled()) { - start = get_timer(0); - while (get_timer(start) < ticks) ; - } else { - /* Interrupts disabled, this means that we cannot - * use get_timer(), it relies on IRQ. Instead the - * CPU frequency is used. - */ - cpu_wait_ms_busy(ticks2usec(ticks) / 1000); - } -} - -int timer_interrupt_init_cpu(void) -{ - return -1; -} - -/* - * This function is intended for SHORT delays only. - */ -unsigned long cpu_usec2ticks(unsigned long usec) -{ - if (usec < US_PER_TICK) - return 1; - return usec / US_PER_TICK; -} - -unsigned long cpu_ticks2usec(unsigned long ticks) -{ - return ticks * US_PER_TICK; -} - int timer_init(void) { ambapp_dev_gptimer_element *tmr; diff --git a/arch/sparc/cpu/leon3/interrupts.c b/arch/sparc/cpu/leon3/interrupts.c index 2312b58d29..00c3288774 100644 --- a/arch/sparc/cpu/leon3/interrupts.c +++ b/arch/sparc/cpu/leon3/interrupts.c @@ -124,17 +124,6 @@ int interrupt_init_cpu(void) /****************************************************************************/ -/* Handle Timer 0 IRQ */ -void timer_interrupt_cpu(void *arg) -{ - gptimer->e[0].ctrl = (GPTIMER_CTRL_EN | GPTIMER_CTRL_RS | - GPTIMER_CTRL_LD | GPTIMER_CTRL_IE); - /* nothing to do here */ - return; -} - -/****************************************************************************/ - /* * Install and free a interrupt handler. */ diff --git a/arch/sparc/include/asm/u-boot.h b/arch/sparc/include/asm/u-boot.h index 4c4b5f218a..9b9a71d553 100644 --- a/arch/sparc/include/asm/u-boot.h +++ b/arch/sparc/include/asm/u-boot.h @@ -2,56 +2,23 @@ * (C) Copyright 2000 - 2002 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * - * (C) Copyright 2007, From asm-ppc/u-boot.h - * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com. + * (C) Copyright 2007, 2015 + * Daniel Hellstrom, Cobham Gaisler, daniel@gaisler.com. * * SPDX-License-Identifier: GPL-2.0+ - ******************************************************************** - * NOTE: This header file defines an interface to U-Boot. Including - * this (unmodified) header file in another file is considered normal - * use of U-Boot, and does *not* fall under the heading of "derived - * work". - ******************************************************************** */ #ifndef __U_BOOT_H__ #define __U_BOOT_H__ -#ifdef CONFIG_SYS_GENERIC_BOARD -/* Use the generic board which requires a unified bd_info */ -#include <asm-generic/u-boot.h> -#else - -/* - * Currently, this Board information is not passed to +/* Currently, this board information is not passed to * Linux kernel from U-Boot, but may be passed to other * Operating systems. This is because U-boot emulates * a SUN PROM loader (from Linux point of view). - * - * include/asm-sparc/u-boot.h */ - -#ifndef __ASSEMBLY__ - -typedef struct bd_info { - unsigned long bi_memstart; /* start of DRAM memory */ - phys_size_t bi_memsize; /* size of DRAM memory in bytes */ - unsigned long bi_flashstart; /* start of FLASH memory */ - unsigned long bi_flashsize; /* size of FLASH memory */ - unsigned long bi_flashoffset; /* reserved area for startup monitor */ - unsigned long bi_sramstart; /* start of SRAM memory */ - unsigned long bi_sramsize; /* size of SRAM memory */ - unsigned long bi_bootflags; /* boot / reboot flag (for LynxOS) */ - unsigned short bi_ethspeed; /* Ethernet speed in Mbps */ - unsigned long bi_intfreq; /* Internal Freq, in MHz */ - unsigned long bi_busfreq; /* Bus Freq, in MHz */ -} bd_t; - -#endif /* __ASSEMBLY__ */ - -#endif /* !CONFIG_SYS_GENERIC_BOARD */ +#include <asm-generic/u-boot.h> /* For image.h:image_check_target_arch() */ #define IH_ARCH_DEFAULT IH_ARCH_SPARC -#endif /* __U_BOOT_H__ */ +#endif diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile index 6bddd4c8a1..6b7ad6d155 100644 --- a/arch/sparc/lib/Makefile +++ b/arch/sparc/lib/Makefile @@ -5,9 +5,5 @@ # SPDX-License-Identifier: GPL-2.0+ # -obj-y = cache.o interrupts.o time.o +obj-y = cache.o interrupts.o obj-$(CONFIG_CMD_BOOTM) += bootm.o - -ifndef CONFIG_SYS_GENERIC_BOARD -obj-y += board.o -endif diff --git a/arch/sparc/lib/board.c b/arch/sparc/lib/board.c deleted file mode 100644 index 10475d1082..0000000000 --- a/arch/sparc/lib/board.c +++ /dev/null @@ -1,398 +0,0 @@ -/* SPARC Board initialization - * - * (C) Copyright 2000-2006 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * (C) Copyright 2007 - * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <command.h> -#include <console.h> -#include <malloc.h> -#include <stdio_dev.h> -#include <config.h> -#if defined(CONFIG_CMD_IDE) -#include <ide.h> -#endif -#ifdef CONFIG_STATUS_LED -#include <status_led.h> -#endif -#include <net.h> -#include <serial.h> -#include <version.h> -#if defined(CONFIG_POST) -#include <post.h> -#endif -#ifdef CONFIG_PS2KBD -#include <keyboard.h> -#endif -#ifdef CONFIG_CMD_AMBAPP -#include <ambapp.h> -#endif - -#ifdef CONFIG_BITBANGMII -#include <miiphy.h> -#endif - -DECLARE_GLOBAL_DATA_PTR; - -/* Debug options -#define DEBUG_INIT_SEQUENCE -#define DEBUG_MEM_LAYOUT -#define DEBUG_COMMANDS -*/ - -extern void timer_interrupt_init(void); -extern int do_ambapp_print(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]); -extern int prom_init(void); - -#if defined(CONFIG__CMD_DOC) -void doc_init(void); -#endif - -#if !defined(CONFIG_SYS_NO_FLASH) -static char *failed = "*** failed ***\n"; -#endif - -#include <environment.h> - -ulong monitor_flash_len; - -/************************************************************************ - * Init Utilities * - ************************************************************************ - * Some of this code should be moved into the core functions, - * but let's get it working (again) first... - */ - -static int init_baudrate(void) -{ - gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE); - return 0; -} - -/***********************************************************************/ - -/* - * All attempts to come up with a "common" initialization sequence - * that works for all boards and architectures failed: some of the - * requirements are just _too_ different. To get rid of the resulting - * mess of board dependend #ifdef'ed code we now make the whole - * initialization sequence configurable to the user. - * - * The requirements for any new initalization function is simple: it - * receives a pointer to the "global data" structure as it's only - * argument, and returns an integer return code, where 0 means - * "continue" and != 0 means "fatal error, hang the system". - */ -typedef int (init_fnc_t) (void); - -#define WATCHDOG_RESET(x) - -/************************************************************************ - * Initialization sequence * - ************************************************************************ - */ - -init_fnc_t *init_sequence[] = { - -#if defined(CONFIG_BOARD_EARLY_INIT_F) - board_early_init_f, -#endif - serial_init, - - init_timebase, - -#if defined(CONFIG_CMD_AMBAPP) - ambapp_init_reloc, -#endif - - env_init, - - init_baudrate, - - console_init_f, - display_options, - - checkcpu, - checkboard, -#if defined(CONFIG_MISC_INIT_F) - misc_init_f, -#endif - -#ifdef CONFIG_POST - post_init_f, -#endif - - NULL, /* Terminate this list, - * beware: this list will be relocated - * which means that NULL will become - * NULL+RELOC_OFFSET. We simply make - * NULL be -RELOC_OFFSET instead. - */ -}; - -/************************************************************************ - * - * This is the SPARC board initialization routine, running from RAM. - * - ************************************************************************ - */ -#ifdef DEBUG_INIT_SEQUENCE -char *str_init_seq = "INIT_SEQ 00\n"; -char *str_init_seq_done = "\n\rInit sequence done...\r\n\r\n"; -#endif - -void board_init_f(ulong bootflag) -{ - bd_t *bd; - init_fnc_t **init_fnc_ptr; - int j; - -#ifndef CONFIG_SYS_NO_FLASH - ulong flash_size; -#endif - - gd = (gd_t *) (CONFIG_SYS_GBL_DATA_OFFSET); - - /* Clear initial global data */ - memset((void *)gd, 0, sizeof(gd_t)); - - gd->bd = (bd_t *) (gd + 1); /* At end of global data */ - gd->baudrate = CONFIG_BAUDRATE; - gd->cpu_clk = CONFIG_SYS_CLK_FREQ; - - bd = gd->bd; - bd->bi_memstart = CONFIG_SYS_RAM_BASE; - bd->bi_memsize = CONFIG_SYS_RAM_SIZE; - bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; -#if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE) - bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; - bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; -#endif - bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */ - - gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ - gd->reloc_off = CONFIG_SYS_RELOC_MONITOR_BASE - CONFIG_SYS_MONITOR_BASE; - - for (init_fnc_ptr = init_sequence, j = 0; *init_fnc_ptr; - ++init_fnc_ptr, j++) { -#ifdef DEBUG_INIT_SEQUENCE - if (j > 9) - str_init_seq[9] = '0' + (j / 10); - str_init_seq[10] = '0' + (j - (j / 10) * 10); - serial_puts(str_init_seq); -#endif - if ((*init_fnc_ptr + gd->reloc_off) () != 0) { - hang(); - } - } -#ifdef DEBUG_INIT_SEQUENCE - serial_puts(str_init_seq_done); -#endif - - /* - * Now that we have DRAM mapped and working, we can - * relocate the code and continue running from DRAM. - * - * Reserve memory at end of RAM for (top down in that order): - * - kernel log buffer - * - protected RAM - * - LCD framebuffer - * - monitor code - * - board info struct - */ -#ifdef DEBUG_MEM_LAYOUT - printf("CONFIG_SYS_MONITOR_BASE: 0x%lx\n", CONFIG_SYS_MONITOR_BASE); - printf("CONFIG_ENV_ADDR: 0x%lx\n", CONFIG_ENV_ADDR); - printf("CONFIG_SYS_RELOC_MONITOR_BASE: 0x%lx (%d)\n", CONFIG_SYS_RELOC_MONITOR_BASE, - CONFIG_SYS_MONITOR_LEN); - printf("CONFIG_SYS_MALLOC_BASE: 0x%lx (%d)\n", CONFIG_SYS_MALLOC_BASE, - CONFIG_SYS_MALLOC_LEN); - printf("CONFIG_SYS_INIT_SP_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_INIT_SP_OFFSET, - CONFIG_SYS_STACK_SIZE); - printf("CONFIG_SYS_PROM_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_PROM_OFFSET, - CONFIG_SYS_PROM_SIZE); - printf("CONFIG_SYS_GBL_DATA_OFFSET: 0x%lx (%d)\n", CONFIG_SYS_GBL_DATA_OFFSET, - GENERATED_GBL_DATA_SIZE); -#endif - -#ifdef CONFIG_POST - post_bootmode_init(); - post_run(NULL, POST_ROM | post_bootmode_get(0)); -#endif - -#if defined(CONFIG_NEEDS_MANUAL_RELOC) - /* - * We have to relocate the command table manually - */ - fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd), - ll_entry_count(cmd_tbl_t, cmd)); -#endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */ - -#if defined(CONFIG_CMD_AMBAPP) && defined(CONFIG_SYS_AMBAPP_PRINT_ON_STARTUP) - puts("AMBA:\n"); - do_ambapp_print(NULL, 0, 0, NULL); -#endif - - /* initialize higher level parts of CPU like time base and timers */ - cpu_init_r(); - - /* start timer */ - timer_interrupt_init(); - - /* - * Enable Interrupts before any calls to udelay, - * the flash driver may use udelay resulting in - * a hang if not timer0 IRQ is enabled. - */ - interrupt_init(); - - /* The Malloc area is immediately below the monitor copy in RAM */ - mem_malloc_init(CONFIG_SYS_MALLOC_BASE, - CONFIG_SYS_MALLOC_END - CONFIG_SYS_MALLOC_BASE); - -#if !defined(CONFIG_SYS_NO_FLASH) - puts("Flash: "); - - if ((flash_size = flash_init()) > 0) { -# ifdef CONFIG_SYS_FLASH_CHECKSUM - print_size(flash_size, ""); - /* - * Compute and print flash CRC if flashchecksum is set to 'y' - * - * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX - */ - if (getenv_yesno("flashchecksum") == 1) { - printf(" CRC: %08lX", - crc32(0, (const unsigned char *)CONFIG_SYS_FLASH_BASE, - flash_size) - ); - } - putc('\n'); -# else /* !CONFIG_SYS_FLASH_CHECKSUM */ - print_size(flash_size, "\n"); -# endif /* CONFIG_SYS_FLASH_CHECKSUM */ - } else { - puts(failed); - hang(); - } - - bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */ - bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */ -#if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE - bd->bi_flashoffset = monitor_flash_len; /* reserved area for startup monitor */ -#else - bd->bi_flashoffset = 0; -#endif -#else /* CONFIG_SYS_NO_FLASH */ - bd->bi_flashsize = 0; - bd->bi_flashstart = 0; - bd->bi_flashoffset = 0; -#endif /* !CONFIG_SYS_NO_FLASH */ - -#ifdef CONFIG_SPI -# if !defined(CONFIG_ENV_IS_IN_EEPROM) - spi_init_f(); -# endif - spi_init_r(); -#endif - - /* relocate environment function pointers etc. */ - env_relocate(); - -#if defined(CONFIG_BOARD_LATE_INIT) - board_late_init(); -#endif - -#ifdef CONFIG_ID_EEPROM - mac_read_from_eeprom(); -#endif - -#if defined(CONFIG_PCI) - /* - * Do pci configuration - */ - pci_init(); -#endif - - /* Initialize stdio devices */ - stdio_init(); - - /* Initialize the jump table for applications */ - jumptable_init(); - - /* Initialize the console (after the relocation and devices init) */ - console_init_r(); - -#ifdef CONFIG_STATUS_LED - status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING); -#endif - - udelay(20); - - /* Initialize from environment */ - load_addr = getenv_ulong("loadaddr", 16, load_addr); - - WATCHDOG_RESET(); - -#if defined(CONFIG_CMD_DOC) - WATCHDOG_RESET(); - puts("DOC: "); - doc_init(); -#endif - -#ifdef CONFIG_BITBANGMII - bb_miiphy_init(); -#endif -#if defined(CONFIG_CMD_NET) - WATCHDOG_RESET(); - puts("Net: "); - eth_initialize(); -#endif - -#if defined(CONFIG_CMD_NET) && defined(CONFIG_RESET_PHY_R) - WATCHDOG_RESET(); - debug("Reset Ethernet PHY\n"); - reset_phy(); -#endif - -#ifdef CONFIG_POST - post_run(NULL, POST_RAM | post_bootmode_get(0)); -#endif - -#if defined(CONFIG_CMD_IDE) - WATCHDOG_RESET(); - puts("IDE: "); - ide_init(); -#endif /* CONFIG_CMD_IDE */ - -#ifdef CONFIG_LAST_STAGE_INIT - WATCHDOG_RESET(); - /* - * Some parts can be only initialized if all others (like - * Interrupts) are up and running (i.e. the PC-style ISA - * keyboard). - */ - last_stage_init(); -#endif - -#ifdef CONFIG_PS2KBD - puts("PS/2: "); - kbd_init(); -#endif - prom_init(); - - /* main_loop */ - for (;;) { - WATCHDOG_RESET(); - main_loop(); - } - -} - -/************************************************************************/ diff --git a/arch/sparc/lib/interrupts.c b/arch/sparc/lib/interrupts.c index fab26c62dd..cb73d17999 100644 --- a/arch/sparc/lib/interrupts.c +++ b/arch/sparc/lib/interrupts.c @@ -66,33 +66,3 @@ int interrupt_init(void) return ret; } - -/* timer interrupt/overflow counter */ -static volatile ulong timestamp = 0; - -/* regs can not be used here! regs is actually the pointer given in - * irq_install_handler - */ -void timer_interrupt(struct pt_regs *regs) -{ - /* call cpu specific function from $(CPU)/interrupts.c */ - timer_interrupt_cpu((void *)regs); - - timestamp++; -} - -void timer_interrupt_init(void) -{ - int irq; - - timestamp = 0; - - irq = timer_interrupt_init_cpu(); - - if (irq < 0) { - /* cpu specific code handled the interrupt registration it self */ - return; - } - /* register interrupt handler for timer */ - irq_install_handler(irq, (void (*)(void *))timer_interrupt, NULL); -} diff --git a/arch/sparc/lib/time.c b/arch/sparc/lib/time.c deleted file mode 100644 index 50a09ad17a..0000000000 --- a/arch/sparc/lib/time.c +++ /dev/null @@ -1,62 +0,0 @@ -/* - * (C) Copyright 2000, 2001 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * (C) Copyright 2007 - * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> - -/* Implemented by SPARC CPUs */ -extern void cpu_wait_ticks(unsigned long ticks); -extern unsigned long cpu_usec2ticks(unsigned long usec); -extern unsigned long cpu_ticks2usec(unsigned long ticks); - -/* ------------------------------------------------------------------------- */ - -void wait_ticks(unsigned long ticks) -{ - cpu_wait_ticks(ticks); -} - -/* - * This function is intended for SHORT delays only. - */ -unsigned long usec2ticks(unsigned long usec) -{ - return cpu_usec2ticks(usec); -} - -/* ------------------------------------------------------------------------- */ - -/* - * We implement the delay by converting the delay (the number of - * microseconds to wait) into a number of time base ticks; then we - * watch the time base until it has incremented by that amount. - */ -void __udelay(unsigned long usec) -{ - ulong ticks = usec2ticks(usec); - - wait_ticks(ticks); -} - -/* ------------------------------------------------------------------------- */ - -unsigned long ticks2usec(unsigned long ticks) -{ - return cpu_ticks2usec(ticks); -} - -/* ------------------------------------------------------------------------- */ - -int init_timebase(void) -{ - - return (0); -} - -/* ------------------------------------------------------------------------- */ |