diff options
Diffstat (limited to 'arch/arm/cpu')
-rw-r--r-- | arch/arm/cpu/arm920t/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/cpu/arm920t/s3c24x0/Makefile | 10 | ||||
-rw-r--r-- | arch/arm/cpu/arm920t/s3c24x0/cpu_info.c | 38 | ||||
-rw-r--r-- | arch/arm/cpu/arm920t/s3c24x0/speed.c | 102 | ||||
-rw-r--r-- | arch/arm/cpu/arm920t/s3c24x0/timer.c | 160 |
5 files changed, 0 insertions, 311 deletions
diff --git a/arch/arm/cpu/arm920t/Makefile b/arch/arm/cpu/arm920t/Makefile index 8faf34b..948b764 100644 --- a/arch/arm/cpu/arm920t/Makefile +++ b/arch/arm/cpu/arm920t/Makefile @@ -11,7 +11,6 @@ obj-y += cpu.o obj-$(CONFIG_EP93XX) += ep93xx/ obj-$(CONFIG_IMX) += imx/ -obj-$(CONFIG_S3C24X0) += s3c24x0/ # some files can only build in ARM mode diff --git a/arch/arm/cpu/arm920t/s3c24x0/Makefile b/arch/arm/cpu/arm920t/s3c24x0/Makefile deleted file mode 100644 index e78f8a0..0000000 --- a/arch/arm/cpu/arm920t/s3c24x0/Makefile +++ /dev/null @@ -1,10 +0,0 @@ -# -# (C) Copyright 2000-2006 -# Wolfgang Denk, DENX Software Engineering, wd@denx.de. -# -# SPDX-License-Identifier: GPL-2.0+ -# - -obj-$(CONFIG_DISPLAY_CPUINFO) += cpu_info.o -obj-y += speed.o -obj-y += timer.o diff --git a/arch/arm/cpu/arm920t/s3c24x0/cpu_info.c b/arch/arm/cpu/arm920t/s3c24x0/cpu_info.c deleted file mode 100644 index fede51a..0000000 --- a/arch/arm/cpu/arm920t/s3c24x0/cpu_info.c +++ /dev/null @@ -1,38 +0,0 @@ -/* - * (C) Copyright 2010 - * David Mueller <d.mueller@elsoft.ch> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/io.h> -#include <asm/arch/s3c24x0_cpu.h> - -typedef ulong (*getfreq)(void); - -static const getfreq freq_f[] = { - get_FCLK, - get_HCLK, - get_PCLK, -}; - -static const char freq_c[] = { 'F', 'H', 'P' }; - -int print_cpuinfo(void) -{ - int i; - char buf[32]; -/* the S3C2400 seems to be lacking a CHIP ID register */ -#ifndef CONFIG_S3C2400 - ulong cpuid; - struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio(); - - cpuid = readl(&gpio->gstatus1); - printf("CPUID: %8lX\n", cpuid); -#endif - for (i = 0; i < ARRAY_SIZE(freq_f); i++) - printf("%cCLK: %8s MHz\n", freq_c[i], strmhz(buf, freq_f[i]())); - - return 0; -} diff --git a/arch/arm/cpu/arm920t/s3c24x0/speed.c b/arch/arm/cpu/arm920t/s3c24x0/speed.c deleted file mode 100644 index 3701c5d..0000000 --- a/arch/arm/cpu/arm920t/s3c24x0/speed.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * (C) Copyright 2001-2004 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * (C) Copyright 2002 - * David Mueller, ELSOFT AG, d.mueller@elsoft.ch - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* This code should work for both the S3C2400 and the S3C2410 - * as they seem to have the same PLL and clock machinery inside. - * The different address mapping is handled by the s3c24xx.h files below. - */ - -#include <common.h> -#ifdef CONFIG_S3C24X0 - -#include <asm/io.h> -#include <asm/arch/s3c24x0_cpu.h> - -#define MPLL 0 -#define UPLL 1 - -/* ------------------------------------------------------------------------- */ -/* NOTE: This describes the proper use of this file. - * - * CONFIG_SYS_CLK_FREQ should be defined as the input frequency of the PLL. - * - * get_FCLK(), get_HCLK(), get_PCLK() and get_UCLK() return the clock of - * the specified bus in HZ. - */ -/* ------------------------------------------------------------------------- */ - -static ulong get_PLLCLK(int pllreg) -{ - struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power(); - ulong r, m, p, s; - - if (pllreg == MPLL) - r = readl(&clk_power->mpllcon); - else if (pllreg == UPLL) - r = readl(&clk_power->upllcon); - else - hang(); - - m = ((r & 0xFF000) >> 12) + 8; - p = ((r & 0x003F0) >> 4) + 2; - s = r & 0x3; - -#if defined(CONFIG_S3C2440) - if (pllreg == MPLL) - return 2 * m * (CONFIG_SYS_CLK_FREQ / (p << s)); -#endif - return (CONFIG_SYS_CLK_FREQ * m) / (p << s); - -} - -/* return FCLK frequency */ -ulong get_FCLK(void) -{ - return get_PLLCLK(MPLL); -} - -/* return HCLK frequency */ -ulong get_HCLK(void) -{ - struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power(); -#ifdef CONFIG_S3C2440 - switch (readl(&clk_power->clkdivn) & 0x6) { - default: - case 0: - return get_FCLK(); - case 2: - return get_FCLK() / 2; - case 4: - return (readl(&clk_power->camdivn) & (1 << 9)) ? - get_FCLK() / 8 : get_FCLK() / 4; - case 6: - return (readl(&clk_power->camdivn) & (1 << 8)) ? - get_FCLK() / 6 : get_FCLK() / 3; - } -#else - return (readl(&clk_power->clkdivn) & 2) ? get_FCLK() / 2 : get_FCLK(); -#endif -} - -/* return PCLK frequency */ -ulong get_PCLK(void) -{ - struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power(); - - return (readl(&clk_power->clkdivn) & 1) ? get_HCLK() / 2 : get_HCLK(); -} - -/* return UCLK frequency */ -ulong get_UCLK(void) -{ - return get_PLLCLK(UPLL); -} - -#endif /* CONFIG_S3C24X0 */ diff --git a/arch/arm/cpu/arm920t/s3c24x0/timer.c b/arch/arm/cpu/arm920t/s3c24x0/timer.c deleted file mode 100644 index ba1e616..0000000 --- a/arch/arm/cpu/arm920t/s3c24x0/timer.c +++ /dev/null @@ -1,160 +0,0 @@ -/* - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Marius Groeger <mgroeger@sysgo.de> - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Alex Zuepke <azu@sysgo.de> - * - * (C) Copyright 2002 - * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#ifdef CONFIG_S3C24X0 - -#include <asm/io.h> -#include <asm/arch/s3c24x0_cpu.h> - -DECLARE_GLOBAL_DATA_PTR; - -int timer_init(void) -{ - struct s3c24x0_timers *timers = s3c24x0_get_base_timers(); - ulong tmr; - - /* use PWM Timer 4 because it has no output */ - /* prescaler for Timer 4 is 16 */ - writel(0x0f00, &timers->tcfg0); - if (gd->arch.tbu == 0) { - /* - * for 10 ms clock period @ PCLK with 4 bit divider = 1/2 - * (default) and prescaler = 16. Should be 10390 - * @33.25MHz and 15625 @ 50 MHz - */ - gd->arch.tbu = get_PCLK() / (2 * 16 * 100); - gd->arch.timer_rate_hz = get_PCLK() / (2 * 16); - } - /* load value for 10 ms timeout */ - writel(gd->arch.tbu, &timers->tcntb4); - /* auto load, manual update of timer 4 */ - tmr = (readl(&timers->tcon) & ~0x0700000) | 0x0600000; - writel(tmr, &timers->tcon); - /* auto load, start timer 4 */ - tmr = (tmr & ~0x0700000) | 0x0500000; - writel(tmr, &timers->tcon); - gd->arch.lastinc = 0; - gd->arch.tbl = 0; - - return 0; -} - -/* - * timer without interrupts - */ -ulong get_timer(ulong base) -{ - return get_timer_masked() - base; -} - -void __udelay (unsigned long usec) -{ - ulong tmo; - ulong start = get_ticks(); - - tmo = usec / 1000; - tmo *= (gd->arch.tbu * 100); - tmo /= 1000; - - while ((ulong) (get_ticks() - start) < tmo) - /*NOP*/; -} - -ulong get_timer_masked(void) -{ - ulong tmr = get_ticks(); - - return tmr / (gd->arch.timer_rate_hz / CONFIG_SYS_HZ); -} - -void udelay_masked(unsigned long usec) -{ - ulong tmo; - ulong endtime; - signed long diff; - - if (usec >= 1000) { - tmo = usec / 1000; - tmo *= (gd->arch.tbu * 100); - tmo /= 1000; - } else { - tmo = usec * (gd->arch.tbu * 100); - tmo /= (1000 * 1000); - } - - endtime = get_ticks() + tmo; - - do { - ulong now = get_ticks(); - diff = endtime - now; - } while (diff >= 0); -} - -/* - * This function is derived from PowerPC code (read timebase as long long). - * On ARM it just returns the timer value. - */ -unsigned long long get_ticks(void) -{ - struct s3c24x0_timers *timers = s3c24x0_get_base_timers(); - ulong now = readl(&timers->tcnto4) & 0xffff; - - if (gd->arch.lastinc >= now) { - /* normal mode */ - gd->arch.tbl += gd->arch.lastinc - now; - } else { - /* we have an overflow ... */ - gd->arch.tbl += gd->arch.lastinc + gd->arch.tbu - now; - } - gd->arch.lastinc = now; - - return gd->arch.tbl; -} - -/* - * This function is derived from PowerPC code (timebase clock frequency). - * On ARM it returns the number of timer ticks per second. - */ -ulong get_tbclk(void) -{ - return CONFIG_SYS_HZ; -} - -/* - * reset the cpu by setting up the watchdog timer and let him time out - */ -void reset_cpu(ulong ignored) -{ - struct s3c24x0_watchdog *watchdog; - - watchdog = s3c24x0_get_base_watchdog(); - - /* Disable watchdog */ - writel(0x0000, &watchdog->wtcon); - - /* Initialize watchdog timer count register */ - writel(0x0001, &watchdog->wtcnt); - - /* Enable watchdog timer; assert reset at timer timeout */ - writel(0x0021, &watchdog->wtcon); - - while (1) - /* loop forever and wait for reset to happen */; - - /*NOTREACHED*/ -} - -#endif /* CONFIG_S3C24X0 */ |