mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-29 21:38:52 +09:00
478 lines
11 KiB
C
478 lines
11 KiB
C
/*
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* U-boot - board.c First C file to be called contains init routines
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*
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* Copyright (c) 2005-2008 Analog Devices Inc.
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*
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* (C) Copyright 2000-2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* Licensed under the GPL-2 or later.
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*/
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#include <common.h>
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#include <command.h>
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#include <devices.h>
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#include <environment.h>
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#include <i2c.h>
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#include <malloc.h>
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#include <net.h>
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#include <version.h>
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#include <asm/cplb.h>
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#include <asm/mach-common/bits/mpu.h>
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#ifdef CONFIG_CMD_NAND
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#include <nand.h> /* cannot even include nand.h if it isnt configured */
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#endif
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#if defined(CONFIG_POST)
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#include <post.h>
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int post_flag;
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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const char version_string[] = U_BOOT_VERSION " (" __DATE__ " - " __TIME__ ")";
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__attribute__((always_inline))
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static inline void serial_early_puts(const char *s)
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{
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#ifdef CONFIG_DEBUG_EARLY_SERIAL
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serial_puts("Early: ");
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serial_puts(s);
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#endif
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}
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/* Get the input voltage */
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static u_long get_vco(void)
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{
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u_long msel;
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u_long vco;
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msel = (*pPLL_CTL >> 9) & 0x3F;
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if (0 == msel)
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msel = 64;
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vco = CONFIG_CLKIN_HZ;
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vco >>= (1 & *pPLL_CTL); /* DF bit */
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vco = msel * vco;
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return vco;
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}
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/* Get the Core clock */
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u_long get_cclk(void)
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{
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u_long csel, ssel;
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if (*pPLL_STAT & 0x1)
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return CONFIG_CLKIN_HZ;
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ssel = *pPLL_DIV;
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csel = ((ssel >> 4) & 0x03);
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ssel &= 0xf;
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if (ssel && ssel < (1 << csel)) /* SCLK > CCLK */
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return get_vco() / ssel;
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return get_vco() >> csel;
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}
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/* Get the System clock */
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u_long get_sclk(void)
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{
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u_long ssel;
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if (*pPLL_STAT & 0x1)
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return CONFIG_CLKIN_HZ;
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ssel = (*pPLL_DIV & 0xf);
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return get_vco() / ssel;
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}
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static void *mem_malloc_start, *mem_malloc_end, *mem_malloc_brk;
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static void mem_malloc_init(void)
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{
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mem_malloc_start = (void *)CFG_MALLOC_BASE;
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mem_malloc_end = (void *)(CFG_MALLOC_BASE + CFG_MALLOC_LEN);
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mem_malloc_brk = mem_malloc_start;
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memset(mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
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}
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void *sbrk(ptrdiff_t increment)
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{
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void *old = mem_malloc_brk;
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void *new = old + increment;
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if (new < mem_malloc_start || new > mem_malloc_end)
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return NULL;
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mem_malloc_brk = new;
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return old;
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}
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static int display_banner(void)
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{
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printf("\n\n%s\n\n", version_string);
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printf("CPU: ADSP " MK_STR(CONFIG_BFIN_CPU) " (Detected Rev: 0.%d)\n", bfin_revid());
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return 0;
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}
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static int init_baudrate(void)
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{
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char baudrate[15];
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int i = getenv_r("baudrate", baudrate, sizeof(baudrate));
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gd->bd->bi_baudrate = gd->baudrate = (i > 0)
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? simple_strtoul(baudrate, NULL, 10)
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: CONFIG_BAUDRATE;
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return 0;
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}
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static void display_global_data(void)
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{
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#ifdef CONFIG_DEBUG_EARLY_SERIAL
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bd_t *bd;
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bd = gd->bd;
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printf(" gd: %x\n", gd);
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printf(" |-flags: %x\n", gd->flags);
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printf(" |-board_type: %x\n", gd->board_type);
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printf(" |-baudrate: %i\n", gd->baudrate);
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printf(" |-have_console: %x\n", gd->have_console);
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printf(" |-ram_size: %x\n", gd->ram_size);
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printf(" |-reloc_off: %x\n", gd->reloc_off);
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printf(" |-env_addr: %x\n", gd->env_addr);
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printf(" |-env_valid: %x\n", gd->env_valid);
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printf(" |-jt(%x): %x\n", gd->jt, *(gd->jt));
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printf(" \\-bd: %x\n", gd->bd);
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printf(" |-bi_baudrate: %x\n", bd->bi_baudrate);
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printf(" |-bi_ip_addr: %x\n", bd->bi_ip_addr);
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printf(" |-bi_enetaddr: %x %x %x %x %x %x\n",
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bd->bi_enetaddr[0], bd->bi_enetaddr[1],
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bd->bi_enetaddr[2], bd->bi_enetaddr[3],
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bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
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printf(" |-bi_boot_params: %x\n", bd->bi_boot_params);
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printf(" |-bi_memstart: %x\n", bd->bi_memstart);
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printf(" |-bi_memsize: %x\n", bd->bi_memsize);
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printf(" |-bi_flashstart: %x\n", bd->bi_flashstart);
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printf(" |-bi_flashsize: %x\n", bd->bi_flashsize);
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printf(" \\-bi_flashoffset: %x\n", bd->bi_flashoffset);
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#endif
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}
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#define CPLB_PAGE_SIZE (4 * 1024 * 1024)
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#define CPLB_PAGE_MASK (~(CPLB_PAGE_SIZE - 1))
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void init_cplbtables(void)
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{
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volatile uint32_t *ICPLB_ADDR, *ICPLB_DATA;
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volatile uint32_t *DCPLB_ADDR, *DCPLB_DATA;
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uint32_t extern_memory;
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size_t i;
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void icplb_add(uint32_t addr, uint32_t data)
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{
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*(ICPLB_ADDR + i) = addr;
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*(ICPLB_DATA + i) = data;
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}
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void dcplb_add(uint32_t addr, uint32_t data)
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{
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*(DCPLB_ADDR + i) = addr;
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*(DCPLB_DATA + i) = data;
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}
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/* populate a few common entries ... we'll let
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* the memory map and cplb exception handler do
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* the rest of the work.
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*/
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i = 0;
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ICPLB_ADDR = (uint32_t *)ICPLB_ADDR0;
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ICPLB_DATA = (uint32_t *)ICPLB_DATA0;
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DCPLB_ADDR = (uint32_t *)DCPLB_ADDR0;
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DCPLB_DATA = (uint32_t *)DCPLB_DATA0;
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icplb_add(0xFFA00000, L1_IMEMORY);
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dcplb_add(0xFF800000, L1_DMEMORY);
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++i;
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icplb_add(CFG_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_IKERNEL);
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dcplb_add(CFG_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_DKERNEL);
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++i;
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/* If the monitor crosses a 4 meg boundary, we'll need
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* to lock two entries for it.
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*/
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if ((CFG_MONITOR_BASE & CPLB_PAGE_MASK) != ((CFG_MONITOR_BASE + CFG_MONITOR_LEN) & CPLB_PAGE_MASK)) {
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icplb_add((CFG_MONITOR_BASE + CFG_MONITOR_LEN) & CPLB_PAGE_MASK, SDRAM_IKERNEL);
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dcplb_add((CFG_MONITOR_BASE + CFG_MONITOR_LEN) & CPLB_PAGE_MASK, SDRAM_DKERNEL);
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++i;
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}
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icplb_add(0x20000000, SDRAM_INON_CHBL);
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dcplb_add(0x20000000, SDRAM_EBIU);
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++i;
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/* Add entries for the rest of external RAM up to the bootrom */
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extern_memory = 0;
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#ifdef CONFIG_DEBUG_NULL_PTR
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icplb_add(extern_memory, (SDRAM_IKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
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dcplb_add(extern_memory, (SDRAM_DKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
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++i;
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icplb_add(extern_memory, SDRAM_IKERNEL);
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dcplb_add(extern_memory, SDRAM_DKERNEL);
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extern_memory += CPLB_PAGE_SIZE;
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++i;
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#endif
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while (i < 16 && extern_memory < (CFG_MONITOR_BASE & CPLB_PAGE_MASK)) {
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icplb_add(extern_memory, SDRAM_IGENERIC);
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dcplb_add(extern_memory, SDRAM_DGENERIC);
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extern_memory += CPLB_PAGE_SIZE;
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++i;
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}
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while (i < 16) {
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icplb_add(0, 0);
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dcplb_add(0, 0);
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++i;
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}
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}
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/*
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* All attempts to come up with a "common" initialization sequence
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* that works for all boards and architectures failed: some of the
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* requirements are just _too_ different. To get rid of the resulting
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* mess of board dependend #ifdef'ed code we now make the whole
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* initialization sequence configurable to the user.
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*
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* The requirements for any new initalization function is simple: it
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* receives a pointer to the "global data" structure as it's only
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* argument, and returns an integer return code, where 0 means
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* "continue" and != 0 means "fatal error, hang the system".
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*/
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extern int exception_init(void);
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extern int irq_init(void);
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extern int rtc_init(void);
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extern int timer_init(void);
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void board_init_f(ulong bootflag)
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{
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ulong addr;
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bd_t *bd;
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#ifdef CONFIG_BOARD_EARLY_INIT_F
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serial_early_puts("Board early init flash\n");
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board_early_init_f();
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#endif
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serial_early_puts("Init CPLB tables\n");
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init_cplbtables();
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serial_early_puts("Exceptions setup\n");
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exception_init();
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#ifndef CONFIG_ICACHE_OFF
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serial_early_puts("Turn on ICACHE\n");
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icache_enable();
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#endif
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#ifndef CONFIG_DCACHE_OFF
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serial_early_puts("Turn on DCACHE\n");
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dcache_enable();
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#endif
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serial_early_puts("Init global data\n");
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gd = (gd_t *) (CFG_GBL_DATA_ADDR);
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memset((void *)gd, 0, sizeof(gd_t));
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/* Board data initialization */
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addr = (CFG_GBL_DATA_ADDR + sizeof(gd_t));
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/* Align to 4 byte boundary */
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addr &= ~(4 - 1);
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bd = (bd_t *) addr;
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gd->bd = bd;
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memset((void *)bd, 0, sizeof(bd_t));
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bd->bi_r_version = version_string;
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bd->bi_cpu = MK_STR(CONFIG_BFIN_CPU);
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bd->bi_board_name = BFIN_BOARD_NAME;
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bd->bi_vco = get_vco();
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bd->bi_cclk = get_cclk();
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bd->bi_sclk = get_sclk();
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/* Initialize */
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serial_early_puts("IRQ init\n");
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irq_init();
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serial_early_puts("Environment init\n");
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env_init();
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serial_early_puts("Baudrate init\n");
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init_baudrate();
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serial_early_puts("Serial init\n");
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serial_init();
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serial_early_puts("Console init flash\n");
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console_init_f();
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serial_early_puts("End of early debugging\n");
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display_banner();
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checkboard();
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#if defined(CONFIG_RTC_BFIN) && defined(CONFIG_CMD_DATE)
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rtc_init();
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#endif
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timer_init();
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printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n",
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get_vco() / 1000000, get_cclk() / 1000000, get_sclk() / 1000000);
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printf("RAM: ");
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print_size(initdram(0), "\n");
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#if defined(CONFIG_POST)
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post_init_f();
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post_bootmode_init();
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post_run(NULL, POST_ROM | post_bootmode_get(0));
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#endif
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board_init_r((gd_t *) gd, 0x20000010);
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}
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#if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
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static int init_func_i2c(void)
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{
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puts("I2C: ");
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i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
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puts("ready\n");
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return (0);
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}
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#endif
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void board_init_r(gd_t * id, ulong dest_addr)
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{
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extern void malloc_bin_reloc(void);
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char *s;
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bd_t *bd;
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gd = id;
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gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
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bd = gd->bd;
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#if defined(CONFIG_POST)
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post_output_backlog();
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post_reloc();
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#endif
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#if !defined(CFG_NO_FLASH)
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/* There are some other pointer constants we must deal with */
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/* configure available FLASH banks */
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extern flash_info_t flash_info[];
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ulong size = flash_init();
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puts("Flash: ");
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print_size(size, "\n");
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flash_protect(FLAG_PROTECT_SET, CFG_FLASH_BASE,
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CFG_FLASH_BASE + 0x1ffff, &flash_info[0]);
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bd->bi_flashstart = CFG_FLASH_BASE;
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bd->bi_flashsize = size;
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bd->bi_flashoffset = 0;
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#else
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bd->bi_flashstart = 0;
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bd->bi_flashsize = 0;
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bd->bi_flashoffset = 0;
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#endif
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/* initialize malloc() area */
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mem_malloc_init();
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malloc_bin_reloc();
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#ifdef CONFIG_SPI
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# if ! defined(CFG_ENV_IS_IN_EEPROM)
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spi_init_f();
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# endif
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spi_init_r();
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#endif
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/* relocate environment function pointers etc. */
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env_relocate();
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#ifdef CONFIG_CMD_NET
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/* board MAC address */
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s = getenv("ethaddr");
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if (s == NULL) {
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# ifndef CONFIG_ETHADDR
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# if 0
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if (!board_get_enetaddr(bd->bi_enetaddr)) {
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char nid[20];
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sprintf(nid, "%02X:%02X:%02X:%02X:%02X:%02X",
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bd->bi_enetaddr[0], bd->bi_enetaddr[1],
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bd->bi_enetaddr[2], bd->bi_enetaddr[3],
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bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
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setenv("ethaddr", nid);
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}
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# endif
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# endif
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} else {
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int i;
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char *e;
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for (i = 0; i < 6; ++i) {
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bd->bi_enetaddr[i] = simple_strtoul(s, &e, 16);
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s = (*e) ? e + 1 : e;
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}
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}
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/* IP Address */
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bd->bi_ip_addr = getenv_IPaddr("ipaddr");
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#endif
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/* Initialize devices */
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devices_init();
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jumptable_init();
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/* Initialize the console (after the relocation and devices init) */
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console_init_r();
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/* Initialize from environment */
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if ((s = getenv("loadaddr")) != NULL)
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load_addr = simple_strtoul(s, NULL, 16);
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#ifdef CONFIG_CMD_NET
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if ((s = getenv("bootfile")) != NULL)
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copy_filename(BootFile, s, sizeof(BootFile));
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#endif
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#ifdef CONFIG_CMD_NAND
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puts("NAND: ");
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nand_init(); /* go init the NAND */
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#endif
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#if defined(CONFIG_MISC_INIT_R)
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/* miscellaneous platform dependent initialisations */
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misc_init_r();
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#endif
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#ifdef CONFIG_CMD_NET
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printf("Net: ");
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eth_initialize(gd->bd);
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if (getenv("ethaddr"))
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printf("MAC: %02X:%02X:%02X:%02X:%02X:%02X\n",
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bd->bi_enetaddr[0], bd->bi_enetaddr[1], bd->bi_enetaddr[2],
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bd->bi_enetaddr[3], bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
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#endif
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#if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
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init_func_i2c();
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#endif
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display_global_data();
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#if defined(CONFIG_POST)
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if (post_flag)
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post_run(NULL, POST_RAM | post_bootmode_get(0));
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#endif
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/* main_loop() can return to retry autoboot, if so just run it again. */
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for (;;)
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main_loop();
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}
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void hang(void)
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{
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puts("### ERROR ### Please RESET the board ###\n");
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while (1)
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/* If a JTAG emulator is hooked up, we'll automatically trigger
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* a breakpoint in it. If one isn't, this is just a NOP.
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*/
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asm("emuexcpt;");
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}
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