diff options
Diffstat (limited to 'arch/blackfin/cpu/cpu.c')
| -rw-r--r-- | arch/blackfin/cpu/cpu.c | 415 |
1 files changed, 0 insertions, 415 deletions
diff --git a/arch/blackfin/cpu/cpu.c b/arch/blackfin/cpu/cpu.c deleted file mode 100644 index 529322a174..0000000000 --- a/arch/blackfin/cpu/cpu.c +++ /dev/null @@ -1,415 +0,0 @@ -/* - * U-Boot - cpu.c CPU specific functions - * - * Copyright (c) 2005-2008 Analog Devices Inc. - * - * (C) Copyright 2000-2004 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * Licensed under the GPL-2 or later. - */ - -#include <common.h> -#include <command.h> -#include <serial.h> -#include <version.h> -#include <i2c.h> - -#include <asm/blackfin.h> -#include <asm/cplb.h> -#include <asm/clock.h> -#include <asm/mach-common/bits/core.h> -#include <asm/mach-common/bits/ebiu.h> -#include <asm/mach-common/bits/trace.h> - -#include "cpu.h" -#include "initcode.h" -#include "exports.h" - -ulong bfin_poweron_retx; -DECLARE_GLOBAL_DATA_PTR; - -#if defined(CONFIG_CORE1_RUN) && defined(COREB_L1_CODE_START) -void bfin_core1_start(void) -{ -#ifdef BF561_FAMILY - /* Enable core 1 */ - bfin_write_SYSCR(bfin_read_SYSCR() & ~0x0020); -#else - /* Enable core 1 */ - bfin_write32(RCU0_SVECT1, COREB_L1_CODE_START); - bfin_write32(RCU0_CRCTL, 0); - - bfin_write32(RCU0_CRCTL, 0x2); - - /* Check if core 1 starts */ - while (!(bfin_read32(RCU0_CRSTAT) & 0x2)) - continue; - - bfin_write32(RCU0_CRCTL, 0); - - /* flag to notify cces core 1 application */ - bfin_write32(SDU0_MSG_SET, (1 << 19)); -#endif -} -#endif - -__attribute__((always_inline)) -static inline void serial_early_puts(const char *s) -{ -#ifdef CONFIG_DEBUG_EARLY_SERIAL - serial_puts("Early: "); - serial_puts(s); -#endif -} - -static int global_board_data_init(void) -{ -#ifndef CONFIG_SYS_GBL_DATA_ADDR -# define CONFIG_SYS_GBL_DATA_ADDR 0 -#endif -#ifndef CONFIG_SYS_BD_INFO_ADDR -# define CONFIG_SYS_BD_INFO_ADDR 0 -#endif - - bd_t *bd; - - if (CONFIG_SYS_GBL_DATA_ADDR) { - gd = (gd_t *)(CONFIG_SYS_GBL_DATA_ADDR); - memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE); - } else { - static gd_t _bfin_gd; - gd = &_bfin_gd; - } - if (CONFIG_SYS_BD_INFO_ADDR) { - bd = (bd_t *)(CONFIG_SYS_BD_INFO_ADDR); - memset(bd, 0, GENERATED_BD_INFO_SIZE); - } else { - static bd_t _bfin_bd; - bd = &_bfin_bd; - } - - gd->bd = bd; - - bd->bi_r_version = version_string; - bd->bi_cpu = __stringify(CONFIG_BFIN_CPU); - bd->bi_board_name = CONFIG_SYS_BOARD; - bd->bi_vco = get_vco(); - bd->bi_cclk = get_cclk(); - bd->bi_sclk = get_sclk(); - bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; - bd->bi_memsize = CONFIG_SYS_MAX_RAM_SIZE; - - gd->ram_size = CONFIG_SYS_MAX_RAM_SIZE; - - return 0; -} - -static void display_global_data(void) -{ - bd_t *bd; - -#ifndef CONFIG_DEBUG_EARLY_SERIAL - return; -#endif - - bd = gd->bd; - printf(" gd: %p\n", gd); - printf(" |-flags: %lx\n", gd->flags); - printf(" |-board_type: %lx\n", gd->arch.board_type); - printf(" |-baudrate: %u\n", gd->baudrate); - printf(" |-have_console: %lx\n", gd->have_console); - printf(" |-ram_size: %lx\n", gd->ram_size); - printf(" |-env_addr: %lx\n", gd->env_addr); - printf(" |-env_valid: %lx\n", gd->env_valid); - printf(" |-jt(%p): %p\n", gd->jt, gd->jt->get_version); - printf(" \\-bd: %p\n", gd->bd); - printf(" |-bi_boot_params: %lx\n", bd->bi_boot_params); - printf(" |-bi_memstart: %lx\n", bd->bi_memstart); - printf(" |-bi_memsize: %lx\n", bd->bi_memsize); - printf(" |-bi_flashstart: %lx\n", bd->bi_flashstart); - printf(" |-bi_flashsize: %lx\n", bd->bi_flashsize); - printf(" \\-bi_flashoffset: %lx\n", bd->bi_flashoffset); -} - -#define CPLB_PAGE_SIZE (4 * 1024 * 1024) -#define CPLB_PAGE_MASK (~(CPLB_PAGE_SIZE - 1)) -#if defined(__ADSPBF60x__) -#define CPLB_EX_PAGE_SIZE (16 * 1024 * 1024) -#define CPLB_EX_PAGE_MASK (~(CPLB_EX_PAGE_SIZE - 1)) -#else -#define CPLB_EX_PAGE_SIZE CPLB_PAGE_SIZE -#define CPLB_EX_PAGE_MASK CPLB_PAGE_MASK -#endif -void init_cplbtables(void) -{ - uint32_t *ICPLB_ADDR, *ICPLB_DATA; - uint32_t *DCPLB_ADDR, *DCPLB_DATA; - uint32_t extern_memory; - size_t i; - - void icplb_add(uint32_t addr, uint32_t data) - { - bfin_write32(ICPLB_ADDR + i, addr); - bfin_write32(ICPLB_DATA + i, data); - } - void dcplb_add(uint32_t addr, uint32_t data) - { - bfin_write32(DCPLB_ADDR + i, addr); - bfin_write32(DCPLB_DATA + i, data); - } - - /* populate a few common entries ... we'll let - * the memory map and cplb exception handler do - * the rest of the work. - */ - i = 0; - ICPLB_ADDR = (uint32_t *)ICPLB_ADDR0; - ICPLB_DATA = (uint32_t *)ICPLB_DATA0; - DCPLB_ADDR = (uint32_t *)DCPLB_ADDR0; - DCPLB_DATA = (uint32_t *)DCPLB_DATA0; - - icplb_add(0xFFA00000, L1_IMEMORY); - dcplb_add(0xFF800000, L1_DMEMORY); - ++i; -#if defined(__ADSPBF60x__) - icplb_add(0x0, 0x0); - dcplb_add(CONFIG_SYS_FLASH_BASE, PAGE_SIZE_16MB | CPLB_DIRTY | - CPLB_SUPV_WR | CPLB_USER_WR | CPLB_USER_RD | CPLB_VALID); - ++i; -#endif - - if (CONFIG_MEM_SIZE) { - uint32_t mbase = CONFIG_SYS_MONITOR_BASE; - uint32_t mend = mbase + CONFIG_SYS_MONITOR_LEN - 1; - mbase &= CPLB_PAGE_MASK; - mend &= CPLB_PAGE_MASK; - - icplb_add(mbase, SDRAM_IKERNEL); - dcplb_add(mbase, SDRAM_DKERNEL); - ++i; - - /* - * If the monitor crosses a 4 meg boundary, we'll need - * to lock two entries for it. We assume it doesn't - * cross two 4 meg boundaries ... - */ - if (mbase != mend) { - icplb_add(mend, SDRAM_IKERNEL); - dcplb_add(mend, SDRAM_DKERNEL); - ++i; - } - } - -#ifndef __ADSPBF60x__ - icplb_add(0x20000000, SDRAM_INON_CHBL); - dcplb_add(0x20000000, SDRAM_EBIU); - ++i; -#endif - - /* Add entries for the rest of external RAM up to the bootrom */ - extern_memory = 0; - -#ifdef CONFIG_DEBUG_NULL_PTR - icplb_add(extern_memory, - (SDRAM_IKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB); - dcplb_add(extern_memory, - (SDRAM_DKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB); - ++i; - icplb_add(extern_memory, SDRAM_IKERNEL); - dcplb_add(extern_memory, SDRAM_DKERNEL); - extern_memory += CPLB_PAGE_SIZE; - ++i; -#endif - - while (i < 16 && extern_memory < - (CONFIG_SYS_MONITOR_BASE & CPLB_EX_PAGE_MASK)) { - icplb_add(extern_memory, SDRAM_IGENERIC); - dcplb_add(extern_memory, SDRAM_DGENERIC); - extern_memory += CPLB_EX_PAGE_SIZE; - ++i; - } - while (i < 16) { - icplb_add(0, 0); - dcplb_add(0, 0); - ++i; - } -} - -int print_cpuinfo(void) -{ - char buf[32]; - - printf("CPU: ADSP %s (Detected Rev: 0.%d) (%s boot)\n", - gd->bd->bi_cpu, - bfin_revid(), - get_bfin_boot_mode(CONFIG_BFIN_BOOT_MODE)); - - printf("Clock: VCO: %s MHz, ", strmhz(buf, get_vco())); - printf("Core: %s MHz, ", strmhz(buf, get_cclk())); -#if defined(__ADSPBF60x__) - printf("System0: %s MHz, ", strmhz(buf, get_sclk0())); - printf("System1: %s MHz, ", strmhz(buf, get_sclk1())); - printf("Dclk: %s MHz\n", strmhz(buf, get_dclk())); -#else - printf("System: %s MHz\n", strmhz(buf, get_sclk())); -#endif - - return 0; -} - -int exception_init(void) -{ - bfin_write_EVT3(trap); - return 0; -} - -int irq_init(void) -{ -#ifdef SIC_IMASK0 - bfin_write_SIC_IMASK0(0); - bfin_write_SIC_IMASK1(0); -# ifdef SIC_IMASK2 - bfin_write_SIC_IMASK2(0); -# endif -#elif defined(SICA_IMASK0) - bfin_write_SICA_IMASK0(0); - bfin_write_SICA_IMASK1(0); -#elif defined(SIC_IMASK) - bfin_write_SIC_IMASK(0); -#endif - /* Set up a dummy NMI handler if needed. */ - if (CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_BYPASS || ANOMALY_05000219) - bfin_write_EVT2(evt_nmi); /* NMI */ - bfin_write_EVT5(evt_default); /* hardware error */ - bfin_write_EVT6(evt_default); /* core timer */ - bfin_write_EVT7(evt_default); - bfin_write_EVT8(evt_default); - bfin_write_EVT9(evt_default); - bfin_write_EVT10(evt_default); - bfin_write_EVT11(evt_default); - bfin_write_EVT12(evt_default); - bfin_write_EVT13(evt_default); - bfin_write_EVT14(evt_default); - bfin_write_EVT15(evt_default); - bfin_write_ILAT(0); - CSYNC(); - /* enable hardware error irq */ - irq_flags = 0x3f; - local_irq_enable(); - return 0; -} - -__attribute__ ((__noreturn__)) -void cpu_init_f(ulong bootflag, ulong loaded_from_ldr) -{ -#ifndef CONFIG_BFIN_BOOTROM_USES_EVT1 - /* Build a NOP slide over the LDR jump block. Whee! */ - char nops[0xC]; - serial_early_puts("NOP Slide\n"); - memset(nops, 0x00, sizeof(nops)); - memcpy((void *)L1_INST_SRAM, nops, sizeof(nops)); -#endif - - if (!loaded_from_ldr) { - /* Relocate sections into L1 if the LDR didn't do it -- don't - * check length because the linker script does the size - * checking at build time. - */ - serial_early_puts("L1 Relocate\n"); - extern char _stext_l1[], _text_l1_lma[], _text_l1_len[]; - memcpy(&_stext_l1, &_text_l1_lma, (unsigned long)_text_l1_len); - extern char _sdata_l1[], _data_l1_lma[], _data_l1_len[]; - memcpy(&_sdata_l1, &_data_l1_lma, (unsigned long)_data_l1_len); - } - - /* - * Make sure our async settings are committed. Some bootroms - * (like the BF537) will reset some registers on us after it - * has finished loading the LDR. Or if we're booting over - * JTAG, the initcode never got a chance to run. Or if we - * aren't booting from parallel flash, the initcode skipped - * this step completely. - */ - program_async_controller(NULL); - - /* Save RETX so we can pass it while booting Linux */ - bfin_poweron_retx = bootflag; - -#ifdef CONFIG_DEBUG_DUMP - /* Turn on hardware trace buffer */ - bfin_write_TBUFCTL(TBUFPWR | TBUFEN); -#endif - -#ifndef CONFIG_PANIC_HANG - /* Reset upon a double exception rather than just hanging. - * Do not do bfin_read on SWRST as that will reset status bits. - */ -# ifdef SWRST - bfin_write_SWRST(DOUBLE_FAULT); -# endif -#endif - -#if defined(CONFIG_CORE1_RUN) && defined(COREB_L1_CODE_START) - bfin_core1_start(); -#endif - - serial_early_puts("Init global data\n"); - global_board_data_init(); - - board_init_f(0); - - /* should not be reached */ - while (1); -} - -int arch_cpu_init(void) -{ - serial_early_puts("Init CPLB tables\n"); - init_cplbtables(); - - serial_early_puts("Exceptions setup\n"); - exception_init(); - -#ifndef CONFIG_ICACHE_OFF - serial_early_puts("Turn on ICACHE\n"); - icache_enable(); -#endif -#ifndef CONFIG_DCACHE_OFF - serial_early_puts("Turn on DCACHE\n"); - dcache_enable(); -#endif - -#ifdef DEBUG - if (GENERATED_GBL_DATA_SIZE < sizeof(*gd)) - hang(); -#endif - - /* Initialize */ - serial_early_puts("IRQ init\n"); - irq_init(); - - return 0; -} - -int arch_misc_init(void) -{ -#if defined(CONFIG_SYS_I2C) - i2c_reloc_fixup(); -#endif - - display_global_data(); - - if (CONFIG_MEM_SIZE && bfin_os_log_check()) { - puts("\nLog buffer from operating system:\n"); - bfin_os_log_dump(); - puts("\n"); - } - - return 0; -} - -int interrupt_init(void) -{ - return 0; -} |