diff options
Diffstat (limited to 'cpu/arm920t/ep93xx')
| -rw-r--r-- | cpu/arm920t/ep93xx/Makefile | 55 | ||||
| -rw-r--r-- | cpu/arm920t/ep93xx/cpu.c | 51 | ||||
| -rw-r--r-- | cpu/arm920t/ep93xx/led.c | 101 | ||||
| -rw-r--r-- | cpu/arm920t/ep93xx/lowlevel_init.S | 65 | ||||
| -rw-r--r-- | cpu/arm920t/ep93xx/speed.c | 110 | ||||
| -rw-r--r-- | cpu/arm920t/ep93xx/timer.c | 147 | ||||
| -rw-r--r-- | cpu/arm920t/ep93xx/u-boot.lds | 59 |
7 files changed, 0 insertions, 588 deletions
diff --git a/cpu/arm920t/ep93xx/Makefile b/cpu/arm920t/ep93xx/Makefile deleted file mode 100644 index 01a2f55..0000000 --- a/cpu/arm920t/ep93xx/Makefile +++ /dev/null @@ -1,55 +0,0 @@ -# -# Cirrus Logic EP93xx CPU-specific Makefile -# -# Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net> -# -# Copyright (C) 2004, 2005 -# Cory T. Tusar, Videon Central, Inc., <ctusar@videon-central.com> -# -# Copyright (C) 2006 -# Dominic Rath <Dominic.Rath@gmx.de> -# -# Based on an original Makefile, which is -# -# (C) Copyright 2000, 2001, 2002 -# Wolfgang Denk, DENX Software Engineering, wd@denx.de. -# -# See file CREDITS for list of people who contributed to this project. -# -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -# for more details. -# -# You should have received a copy of the GNU General Public License along -# with this program; if not, write to the Free Software Foundation, Inc., -# 675 Mass Ave, Cambridge, MA 02139, USA. -# -include $(TOPDIR)/config.mk - -LIB = $(obj)lib$(SOC).a - -COBJS = cpu.o led.o speed.o timer.o -SOBJS = lowlevel_init.o - -SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) -OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) - -all: $(obj).depend $(LIB) - -$(LIB): $(OBJS) - $(AR) $(ARFLAGS) $@ $(OBJS) - -######################################################################### - -# defines $(obj).depend target -include $(SRCTREE)/rules.mk - -sinclude $(obj).depend - -######################################################################### diff --git a/cpu/arm920t/ep93xx/cpu.c b/cpu/arm920t/ep93xx/cpu.c deleted file mode 100644 index 1abb9c6..0000000 --- a/cpu/arm920t/ep93xx/cpu.c +++ /dev/null @@ -1,51 +0,0 @@ -/* - * Cirrus Logic EP93xx CPU-specific support. - * - * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net> - * - * Copyright (C) 2004, 2005 - * Cory T. Tusar, Videon Central, Inc., <ctusar@videon-central.com> - * - * See file CREDITS for list of people who contributed to this project. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <common.h> -#include <asm/arch/ep93xx.h> -#include <asm/io.h> - -/* We reset the CPU by generating a 1-->0 transition on DeviceCfg bit 31. */ -extern void reset_cpu(ulong addr) -{ - struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE; - uint32_t value; - - /* Unlock DeviceCfg and set SWRST */ - writel(0xAA, &syscon->sysswlock); - value = readl(&syscon->devicecfg); - value |= SYSCON_DEVICECFG_SWRST; - writel(value, &syscon->devicecfg); - - /* Unlock DeviceCfg and clear SWRST */ - writel(0xAA, &syscon->sysswlock); - value = readl(&syscon->devicecfg); - value &= ~SYSCON_DEVICECFG_SWRST; - writel(value, &syscon->devicecfg); - - /* Dying... */ - while (1) - ; /* noop */ -} diff --git a/cpu/arm920t/ep93xx/led.c b/cpu/arm920t/ep93xx/led.c deleted file mode 100644 index 7e2c897..0000000 --- a/cpu/arm920t/ep93xx/led.c +++ /dev/null @@ -1,101 +0,0 @@ -/* - * Copyright (C) 2010, 2009 Matthias Kaehlcke <matthias@kaehlcke.net> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <asm/io.h> -#include <asm/arch/ep93xx.h> -#include <config.h> -#include <status_led.h> - -static uint8_t saved_state[2] = {STATUS_LED_OFF, STATUS_LED_OFF}; -static uint32_t gpio_pin[2] = {1 << STATUS_LED_GREEN, - 1 << STATUS_LED_RED}; - -inline void switch_LED_on(uint8_t led) -{ - register struct gpio_regs *gpio = (struct gpio_regs *)GPIO_BASE; - - writel(readl(&gpio->pedr) | gpio_pin[led], &gpio->pedr); - saved_state[led] = STATUS_LED_ON; -} - -inline void switch_LED_off(uint8_t led) -{ - register struct gpio_regs *gpio = (struct gpio_regs *)GPIO_BASE; - - writel(readl(&gpio->pedr) & ~gpio_pin[led], &gpio->pedr); - saved_state[led] = STATUS_LED_OFF; -} - -void red_LED_on(void) -{ - switch_LED_on(STATUS_LED_RED); -} - -void red_LED_off(void) -{ - switch_LED_off(STATUS_LED_RED); -} - -void green_LED_on(void) -{ - switch_LED_on(STATUS_LED_GREEN); -} - -void green_LED_off(void) -{ - switch_LED_off(STATUS_LED_GREEN); -} - -void __led_init(led_id_t mask, int state) -{ - __led_set(mask, state); -} - -void __led_toggle(led_id_t mask) -{ - if (STATUS_LED_RED == mask) { - if (STATUS_LED_ON == saved_state[STATUS_LED_RED]) - red_LED_off(); - else - red_LED_on(); - } else if (STATUS_LED_GREEN == mask) { - if (STATUS_LED_ON == saved_state[STATUS_LED_GREEN]) - green_LED_off(); - else - green_LED_on(); - } -} - -void __led_set(led_id_t mask, int state) -{ - if (STATUS_LED_RED == mask) { - if (STATUS_LED_ON == state) - red_LED_on(); - else - red_LED_off(); - } else if (STATUS_LED_GREEN == mask) { - if (STATUS_LED_ON == state) - green_LED_on(); - else - green_LED_off(); - } -} diff --git a/cpu/arm920t/ep93xx/lowlevel_init.S b/cpu/arm920t/ep93xx/lowlevel_init.S deleted file mode 100644 index a20ec89..0000000 --- a/cpu/arm920t/ep93xx/lowlevel_init.S +++ /dev/null @@ -1,65 +0,0 @@ -/* - * Low-level initialization for EP93xx - * - * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net> - * - * Copyright (C) 2006 Dominic Rath <Dominic.Rath@gmx.de> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <version.h> -#include <asm/arch/ep93xx.h> - -.globl lowlevel_init -lowlevel_init: - /* backup return address */ - ldr r1, =SYSCON_SCRATCH0 - str lr, [r1] - - /* Turn on both LEDs */ - bl red_LED_on - bl green_LED_on - - /* Configure flash wait states before we switch to the PLL */ - bl flash_cfg - - /* Set up PLL */ - bl pll_cfg - - /* Turn off the Green LED and leave the Red LED on */ - bl green_LED_off - - /* Setup SDRAM */ - bl sdram_cfg - - /* Turn on Green LED, Turn off the Red LED */ - bl green_LED_on - bl red_LED_off - - /* FIXME: we use async mode for now */ - mrc p15, 0, r0, c1, c0, 0 - orr r0, r0, #0xc0000000 - mcr p15, 0, r0, c1, c0, 0 - - /* restore return address */ - ldr r1, =SYSCON_SCRATCH0 - ldr lr, [r1] - - mov pc, lr diff --git a/cpu/arm920t/ep93xx/speed.c b/cpu/arm920t/ep93xx/speed.c deleted file mode 100644 index c83a3bb..0000000 --- a/cpu/arm920t/ep93xx/speed.c +++ /dev/null @@ -1,110 +0,0 @@ -/* - * Cirrus Logic EP93xx PLL support. - * - * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net> - * - * See file CREDITS for list of people who contributed to this project. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <common.h> -#include <asm/arch/ep93xx.h> -#include <asm/io.h> -#include <div64.h> - -/* - * 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. - */ - -/* - * return the PLL output frequency - * - * PLL rate = CONFIG_SYS_CLK_FREQ * (X1FBD + 1) * (X2FBD + 1) - * / (X2IPD + 1) / 2^PS - */ -static ulong get_PLLCLK(uint32_t *pllreg) -{ - uint8_t i; - const uint32_t clkset = readl(pllreg); - uint64_t rate = CONFIG_SYS_CLK_FREQ; - rate *= ((clkset >> SYSCON_CLKSET_PLL_X1FBD1_SHIFT) & 0x1f) + 1; - rate *= ((clkset >> SYSCON_CLKSET_PLL_X2FBD2_SHIFT) & 0x3f) + 1; - do_div(rate, (clkset & 0x1f) + 1); /* X2IPD */ - for (i = 0; i < ((clkset >> SYSCON_CLKSET_PLL_PS_SHIFT) & 3); i++) - rate >>= 1; - - return (ulong)rate; -} - -/* return FCLK frequency */ -ulong get_FCLK() -{ - const uint8_t fclk_divisors[] = { 1, 2, 4, 8, 16, 1, 1, 1 }; - struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE; - - const uint32_t clkset1 = readl(&syscon->clkset1); - const uint8_t fclk_div = - fclk_divisors[(clkset1 >> SYSCON_CLKSET1_FCLK_DIV_SHIFT) & 7]; - const ulong fclk_rate = get_PLLCLK(&syscon->clkset1) / fclk_div; - - return fclk_rate; -} - -/* return HCLK frequency */ -ulong get_HCLK(void) -{ - const uint8_t hclk_divisors[] = { 1, 2, 4, 5, 6, 8, 16, 32 }; - struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE; - - const uint32_t clkset1 = readl(&syscon->clkset1); - const uint8_t hclk_div = - hclk_divisors[(clkset1 >> SYSCON_CLKSET1_HCLK_DIV_SHIFT) & 7]; - const ulong hclk_rate = get_PLLCLK(&syscon->clkset1) / hclk_div; - - return hclk_rate; -} - -/* return PCLK frequency */ -ulong get_PCLK(void) -{ - const uint8_t pclk_divisors[] = { 1, 2, 4, 8 }; - struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE; - - const uint32_t clkset1 = readl(&syscon->clkset1); - const uint8_t pclk_div = - pclk_divisors[(clkset1 >> SYSCON_CLKSET1_PCLK_DIV_SHIFT) & 3]; - const ulong pclk_rate = get_HCLK() / pclk_div; - - return pclk_rate; -} - -/* return UCLK frequency */ -ulong get_UCLK(void) -{ - struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE; - ulong uclk_rate; - - const uint32_t value = readl(&syscon->pwrcnt); - if (value & SYSCON_PWRCNT_UART_BAUD) - uclk_rate = CONFIG_SYS_CLK_FREQ; - else - uclk_rate = CONFIG_SYS_CLK_FREQ / 2; - - return uclk_rate; -} diff --git a/cpu/arm920t/ep93xx/timer.c b/cpu/arm920t/ep93xx/timer.c deleted file mode 100644 index 31304b7..0000000 --- a/cpu/arm920t/ep93xx/timer.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * Cirrus Logic EP93xx timer support. - * - * Copyright (C) 2009, 2010 - * Matthias Kaehlcke <matthias@kaehlcke.net> - * - * Copyright (C) 2004, 2005 - * Cory T. Tusar, Videon Central, Inc., <ctusar@videon-central.com> - * - * Based on the original intr.c Cirrus Logic EP93xx Rev D. interrupt support, - * author unknown. - * - * See file CREDITS for list of people who contributed to this project. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <common.h> -#include <linux/types.h> -#include <asm/arch/ep93xx.h> -#include <asm/io.h> -#include <div64.h> - -#define TIMER_CLKSEL (1 << 3) -#define TIMER_ENABLE (1 << 7) - -#define TIMER_FREQ 508469 /* ticks / second */ -#define TIMER_MAX_VAL 0xFFFFFFFF - -static struct ep93xx_timer -{ - unsigned long long ticks; - unsigned long last_update; -} timer; - -static inline unsigned long clk_to_systicks(unsigned long long clk_ticks) -{ - unsigned long long sys_ticks = (clk_ticks * CONFIG_SYS_HZ); - do_div(sys_ticks, TIMER_FREQ); - - return (unsigned long)sys_ticks; -} - -static inline unsigned long long usecs_to_ticks(unsigned long usecs) -{ - unsigned long long ticks = (unsigned long long)usecs * TIMER_FREQ; - do_div(ticks, 1000 * 1000); - - return ticks; -} - -static inline unsigned long read_timer(void) -{ - struct timer_regs *timer = (struct timer_regs *)TIMER_BASE; - - return TIMER_MAX_VAL - readl(&timer->timer3.value); -} - -/* - * Get the number of ticks (in CONFIG_SYS_HZ resolution) - */ -unsigned long long get_ticks(void) -{ - const unsigned long now = read_timer(); - - if (now >= timer.last_update) - timer.ticks += now - timer.last_update; - else - /* an overflow occurred */ - timer.ticks += TIMER_MAX_VAL - timer.last_update + now; - - timer.last_update = now; - - return clk_to_systicks(timer.ticks); -} - -unsigned long get_timer_masked(void) -{ - return get_ticks(); -} - -unsigned long get_timer(unsigned long base) -{ - return get_timer_masked() - base; -} - -void reset_timer_masked(void) -{ - timer.last_update = read_timer(); - timer.ticks = 0; -} - -void reset_timer(void) -{ - reset_timer_masked(); -} - -void __udelay(unsigned long usec) -{ - /* read the timer and update timer.ticks */ - get_ticks(); - - const unsigned long long target = timer.ticks + usecs_to_ticks(usec); - - while (timer.ticks < target) - get_ticks(); -} - -int timer_init(void) -{ - struct timer_regs *timer = (struct timer_regs *)TIMER_BASE; - - /* use timer 3 with 508KHz and free running */ - writel(TIMER_CLKSEL, &timer->timer3.control); - - /* set initial timer value 3 */ - writel(TIMER_MAX_VAL, &timer->timer3.load); - - /* Enable the timer */ - writel(TIMER_ENABLE | TIMER_CLKSEL, - &timer->timer3.control); - - reset_timer_masked(); - - return 0; -} - -/* - * This function is derived from PowerPC code (timebase clock frequency). - * On ARM it returns the number of timer ticks per second. - */ -unsigned long get_tbclk(void) -{ - return CONFIG_SYS_HZ; -} diff --git a/cpu/arm920t/ep93xx/u-boot.lds b/cpu/arm920t/ep93xx/u-boot.lds deleted file mode 100644 index 737c9d8..0000000 --- a/cpu/arm920t/ep93xx/u-boot.lds +++ /dev/null @@ -1,59 +0,0 @@ -/* - * (C) Copyright 2002 - * Gary Jennejohn, DENX Software Engineering, <gj@denx.de> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") -OUTPUT_ARCH(arm) -ENTRY(_start) -SECTIONS -{ - . = 0x00000000; - - . = ALIGN(4); - .text : - { - cpu/arm920t/start.o (.text) - /* the EP93xx expects to find the pattern 'CRUS' at 0x1000 */ - . = 0x1000; - LONG(0x53555243) - *(.text) - } - - . = ALIGN(4); - .rodata : { *(.rodata) } - - . = ALIGN(4); - .data : { *(.data) } - - . = ALIGN(4); - .got : { *(.got) } - - . = .; - __u_boot_cmd_start = .; - .u_boot_cmd : { *(.u_boot_cmd) } - __u_boot_cmd_end = .; - - . = ALIGN(4); - __bss_start = .; - .bss : { *(.bss) } - _end = .; -} |