diff options
Diffstat (limited to 'arch/sparc/cpu/leon3/cpu_init.c')
| -rw-r--r-- | arch/sparc/cpu/leon3/cpu_init.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/arch/sparc/cpu/leon3/cpu_init.c b/arch/sparc/cpu/leon3/cpu_init.c deleted file mode 100644 index f25388cf84..0000000000 --- a/arch/sparc/cpu/leon3/cpu_init.c +++ /dev/null @@ -1,175 +0,0 @@ -/* Initializes CPU and basic hardware such as memory - * controllers, IRQ controller and system timer 0. - * - * (C) Copyright 2007, 2015 - * Daniel Hellstrom, Cobham Gaisler, daniel@gaisler.com - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/asi.h> -#include <asm/leon.h> -#include <asm/io.h> -#include <ambapp.h> -#include <grlib/irqmp.h> -#include <grlib/gptimer.h> -#include <debug_uart.h> - -#include <config.h> - -/* Default Plug&Play I/O area */ -#ifndef CONFIG_AMBAPP_IOAREA -#define CONFIG_AMBAPP_IOAREA AMBA_DEFAULT_IOAREA -#endif - -/* Select which TIMER that will become the time base */ -#ifndef CONFIG_SYS_GRLIB_GPTIMER_INDEX -#define CONFIG_SYS_GRLIB_GPTIMER_INDEX 0 -#endif - -DECLARE_GLOBAL_DATA_PTR; - -ambapp_dev_irqmp *irqmp = NULL; - -/* - * Breath some life into the CPU... - * - * Run from FLASH/PROM: - * - until memory controller is set up, only registers available - * - memory controller has already been setup up, stack can be used - * - no global variables available for writing - * - constants available - */ -void cpu_init_f(void) -{ -#ifdef CONFIG_DEBUG_UART - debug_uart_init(); -#endif -} - -/* If cache snooping is available in hardware the result will be set - * to 0x800000, otherwise 0. - */ -static unsigned int snoop_detect(void) -{ - unsigned int result; - asm("lda [%%g0] 2, %0" : "=r"(result)); - return result & 0x00800000; -} - -int arch_cpu_init(void) -{ - ambapp_apbdev apbdev; - int index; - - gd->cpu_clk = CONFIG_SYS_CLK_FREQ; - gd->bus_clk = CONFIG_SYS_CLK_FREQ; - gd->ram_size = CONFIG_SYS_SDRAM_SIZE; - - gd->arch.snooping_available = snoop_detect(); - - /* Initialize the AMBA Plug & Play bus structure, the bus - * structure represents the AMBA bus that the CPU is located at. - */ - ambapp_bus_init(CONFIG_AMBAPP_IOAREA, CONFIG_SYS_CLK_FREQ, &ambapp_plb); - - /* Initialize/clear all the timers in the system. - */ - for (index = 0; ambapp_apb_find(&ambapp_plb, VENDOR_GAISLER, - GAISLER_GPTIMER, index, &apbdev) == 1; index++) { - ambapp_dev_gptimer *timer; - unsigned int bus_freq; - int i, ntimers; - - timer = (ambapp_dev_gptimer *)apbdev.address; - - /* Different buses may have different frequency, the - * frequency of the bus tell in which frequency the timer - * prescaler operates. - */ - bus_freq = ambapp_bus_freq(&ambapp_plb, apbdev.ahb_bus_index); - - /* Initialize prescaler common to all timers to 1MHz */ - timer->scalar = timer->scalar_reload = - (((bus_freq / 1000) + 500) / 1000) - 1; - - /* Clear all timers */ - ntimers = timer->config & 0x7; - for (i = 0; i < ntimers; i++) { - timer->e[i].ctrl = GPTIMER_CTRL_IP; - timer->e[i].rld = 0; - timer->e[i].ctrl = GPTIMER_CTRL_LD; - } - } - - return 0; -} - -/* - * initialize higher level parts of CPU like time base and timers - */ -int cpu_init_r(void) -{ - ambapp_apbdev apbdev; - int cpu; - - /* - * Find AMBA APB IRQMP Controller, - */ - if (ambapp_apb_find(&ambapp_plb, VENDOR_GAISLER, - GAISLER_IRQMP, 0, &apbdev) != 1) { - panic("%s: IRQ controller not found\n", __func__); - return -1; - } - irqmp = (ambapp_dev_irqmp *)apbdev.address; - - /* initialize the IRQMP */ - irqmp->ilevel = 0xf; /* all IRQ off */ - irqmp->iforce = 0; - irqmp->ipend = 0; - irqmp->iclear = 0xfffe; /* clear all old pending interrupts */ - for (cpu = 0; cpu < 16; cpu++) { - /* mask and clear force for all IRQs on CPU[N] */ - irqmp->cpu_mask[cpu] = 0; - irqmp->cpu_force[cpu] = 0; - } - - return 0; -} - - ; -int timer_init(void) -{ - ambapp_dev_gptimer_element *tmr; - ambapp_dev_gptimer *gptimer; - ambapp_apbdev apbdev; - unsigned bus_freq; - - if (ambapp_apb_find(&ambapp_plb, VENDOR_GAISLER, GAISLER_GPTIMER, - CONFIG_SYS_GRLIB_GPTIMER_INDEX, &apbdev) != 1) { - panic("%s: gptimer not found!\n", __func__); - return -1; - } - - gptimer = (ambapp_dev_gptimer *) apbdev.address; - - /* Different buses may have different frequency, the - * frequency of the bus tell in which frequency the timer - * prescaler operates. - */ - bus_freq = ambapp_bus_freq(&ambapp_plb, apbdev.ahb_bus_index); - - /* initialize prescaler common to all timers to 1MHz */ - gptimer->scalar = gptimer->scalar_reload = - (((bus_freq / 1000) + 500) / 1000) - 1; - - tmr = (ambapp_dev_gptimer_element *)&gptimer->e[0]; - - tmr->val = 0; - tmr->rld = ~0; - tmr->ctrl = GPTIMER_CTRL_EN | GPTIMER_CTRL_RS | GPTIMER_CTRL_LD; - - CONFIG_SYS_TIMER_COUNTER = (void *)&tmr->val; - return 0; -} |