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/*
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* Copyright (C) 2004-2006 Atmel Corporation |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <command.h> |
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#include <malloc.h> |
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#include <stdio_dev.h> |
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#include <version.h> |
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#include <net.h> |
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#ifdef CONFIG_BITBANGMII |
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#include <miiphy.h> |
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#endif |
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#include <asm/sections.h> |
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#include <asm/arch/mmu.h> |
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#include <asm/arch/hardware.h> |
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#ifndef CONFIG_IDENT_STRING |
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#define CONFIG_IDENT_STRING "" |
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#endif |
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#ifdef CONFIG_GENERIC_ATMEL_MCI |
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#include <mmc.h> |
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#endif |
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DECLARE_GLOBAL_DATA_PTR; |
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unsigned long monitor_flash_len; |
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__weak void dram_init_banksize(void) |
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{ |
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gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; |
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gd->bd->bi_dram[0].size = gd->ram_size; |
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} |
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/* Weak aliases for optional board functions */ |
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static int __do_nothing(void) |
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{ |
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return 0; |
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} |
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int board_postclk_init(void) __attribute__((weak, alias("__do_nothing"))); |
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int board_early_init_r(void) __attribute__((weak, alias("__do_nothing"))); |
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static int init_baudrate(void) |
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{ |
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gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE); |
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return 0; |
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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 ("U-Boot code: %08lx -> %08lx data: %08lx -> %08lx\n", |
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(unsigned long)_text, (unsigned long)_etext, |
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(unsigned long)_data, (unsigned long)(&__bss_end)); |
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return 0; |
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} |
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static int display_dram_config (void) |
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{ |
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int i; |
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puts ("DRAM Configuration:\n"); |
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for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { |
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printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start); |
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print_size (gd->bd->bi_dram[i].size, "\n"); |
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} |
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return 0; |
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} |
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static void display_flash_config (void) |
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{ |
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puts ("Flash: "); |
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print_size(gd->bd->bi_flashsize, " "); |
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printf("at address 0x%08lx\n", gd->bd->bi_flashstart); |
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} |
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void board_init_f(ulong board_type) |
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{ |
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gd_t gd_data; |
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gd_t *new_gd; |
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bd_t *bd; |
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unsigned long *new_sp; |
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unsigned long monitor_len; |
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unsigned long monitor_addr; |
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unsigned long addr; |
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/* Initialize the global data pointer */ |
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memset(&gd_data, 0, sizeof(gd_data)); |
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gd = &gd_data; |
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/* Perform initialization sequence */ |
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board_early_init_f(); |
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arch_cpu_init(); |
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board_postclk_init(); |
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env_init(); |
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init_baudrate(); |
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serial_init(); |
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console_init_f(); |
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display_banner(); |
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dram_init(); |
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/* If we have no SDRAM, we can't go on */ |
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if (gd->ram_size <= 0) |
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panic("No working SDRAM available\n"); |
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/*
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* Now that we have DRAM mapped and working, we can |
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* relocate the code and continue running from DRAM. |
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* |
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* Reserve memory at end of RAM for (top down in that order): |
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* - u-boot image |
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* - heap for malloc() |
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* - board info struct |
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* - global data struct |
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* - stack |
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*/ |
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addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size; |
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monitor_len = (char *)(&__bss_end) - _text; |
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/*
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* Reserve memory for u-boot code, data and bss. |
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* Round down to next 4 kB limit. |
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*/ |
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addr -= monitor_len; |
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addr &= ~(4096UL - 1); |
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monitor_addr = addr; |
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/* Reserve memory for malloc() */ |
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addr -= CONFIG_SYS_MALLOC_LEN; |
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#ifdef CONFIG_LCD |
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#ifdef CONFIG_FB_ADDR |
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printf("LCD: Frame buffer allocated at preset 0x%08x\n", |
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CONFIG_FB_ADDR); |
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gd->fb_base = CONFIG_FB_ADDR; |
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#else |
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addr = lcd_setmem(addr); |
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printf("LCD: Frame buffer allocated at 0x%08lx\n", addr); |
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gd->fb_base = addr; |
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#endif /* CONFIG_FB_ADDR */ |
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#endif /* CONFIG_LCD */ |
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/* Allocate a Board Info struct on a word boundary */ |
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addr -= sizeof(bd_t); |
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addr &= ~3UL; |
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gd->bd = bd = (bd_t *)addr; |
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/* Allocate a new global data copy on a 8-byte boundary. */ |
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addr -= sizeof(gd_t); |
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addr &= ~7UL; |
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new_gd = (gd_t *)addr; |
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/* And finally, a new, bigger stack. */ |
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new_sp = (unsigned long *)addr; |
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gd->start_addr_sp = addr; |
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*(--new_sp) = 0; |
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*(--new_sp) = 0; |
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dram_init_banksize(); |
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memcpy(new_gd, gd, sizeof(gd_t)); |
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relocate_code((unsigned long)new_sp, new_gd, monitor_addr); |
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} |
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void board_init_r(gd_t *new_gd, ulong dest_addr) |
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{ |
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#ifndef CONFIG_ENV_IS_NOWHERE |
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extern char * env_name_spec; |
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#endif |
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bd_t *bd; |
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gd = new_gd; |
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bd = gd->bd; |
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gd->flags |= GD_FLG_RELOC; |
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gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE; |
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/* Enable the MMU so that we can keep u-boot simple */ |
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mmu_init_r(dest_addr); |
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board_early_init_r(); |
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monitor_flash_len = _edata - _text; |
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#if defined(CONFIG_NEEDS_MANUAL_RELOC) |
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/*
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* We have to relocate the command table manually |
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*/ |
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fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd), |
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ll_entry_count(cmd_tbl_t, cmd)); |
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#endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */ |
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/* there are some other pointer constants we must deal with */ |
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#ifndef CONFIG_ENV_IS_NOWHERE |
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env_name_spec += gd->reloc_off; |
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#endif |
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timer_init(); |
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/* The malloc area is right below the monitor image in RAM */ |
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mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off - |
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CONFIG_SYS_MALLOC_LEN, CONFIG_SYS_MALLOC_LEN); |
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enable_interrupts(); |
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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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#ifndef CONFIG_SYS_NO_FLASH |
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bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; |
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bd->bi_flashsize = flash_init(); |
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bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text; |
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if (bd->bi_flashsize) |
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display_flash_config(); |
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#endif |
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if (bd->bi_dram[0].size) |
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display_dram_config(); |
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gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN); |
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if (!gd->bd->bi_boot_params) |
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puts("WARNING: Cannot allocate space for boot parameters\n"); |
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/* initialize environment */ |
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env_relocate(); |
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stdio_init(); |
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jumptable_init(); |
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console_init_r(); |
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/* Initialize from environment */ |
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load_addr = getenv_ulong("loadaddr", 16, load_addr); |
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#ifdef CONFIG_BITBANGMII |
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bb_miiphy_init(); |
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#endif |
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#if defined(CONFIG_CMD_NET) |
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puts("Net: "); |
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eth_initialize(); |
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#endif |
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#ifdef CONFIG_GENERIC_ATMEL_MCI |
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mmc_initialize(gd->bd); |
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#endif |
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for (;;) { |
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main_loop(); |
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} |
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} |
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